DAYS 1-5 (JULY 22-26)

A humid air mass has invaded our region as a warm front passed through late yesterday to early today with widespread rainfall including some heavier thunderstorms. That activity has now exited, and as low pressure passes to our north today, its cold front has to cross the region. While available moisture is there at the surface and solar heating will be present as the warm frontal clouds and areas of fog clear out, a push of drier air at mid levels will limit shower and thunderstorm coverage to generally isolated to scattered along a line pushing eastward through the region during the afternoon to early evening hours. An additional batch of showers may visit RI and southeastern MA later tonight / early Thursday morning as the front slows while exiting the region. After that, high pressure builds toward the region with a drier northwesterly breeze and nice summer weather on Thursday. High pressure then sits over our area from Friday through the weekend with stellar late July weather – lots of sun, low humidity, and daily coastal sea breezes.

TODAY: A first-thing-in-the-morning shower over Outer Cape Cod, otherwise lots of clouds and areas of fog give way to a sun/cloud mix. A shower or thunderstorm possible from west to east this afternoon to early evening. Highs 80-87 but a bit cooler South Coast. Dew point in 60s. Wind SW 5-15 MPH, higher gusts possible especially around any showers and storms.

TONIGHT: Lots of clouds southeastern MA & RI with a shower chance. Partly cloudy elsewhere. Lower elevation fog patches. Lows 61-68. Dew point lowers to near 60. Wind W up to 10 MPH.

THURSDAY: Sun and passing clouds. Highs 79-86. Dew point in 50s. Wind W to NW 5-15 MPH.

THURSDAY NIGHT: Mostly clear. Interior low elevation fog patches. Lows 57-64. Dew point in 50s. Wind NW under 10 MPH.

FRIDAY: Mostly sunny. Highs 78-85, coolest coast. Dew point in 50s. Wind variable up to 10 MPH with coastal sea breezes.

FRIDAY NIGHT: Clear. Lows 56-63. Dew point near 50. Wind variable under 10 MPH.

SATURDAY: Mostly sunny. Highs 77-84, coolest coast. Dew point in 50s. Wind variable up to 10 MPH with coastal sea breezes.

SATURDAY NIGHT: Clear. Lows 56-63. Dew point near 50. Wind variable under 10 MPH.

SUNDAY: Mostly sunny. Highs 77-84, coolest coast. Dew point in 50s. Wind variable up to 10 MPH with coastal sea breezes.

DAYS 6-10 (JULY 27-31)

Shower and thunderstorm chances July 27-28 and July 30-31 with troughs passing through the region. Much of the time will be rain-free, however. Temperatures near to slightly below normal.

DAYS 11-15 (AUGUST 1-5)

Fair weather early to mid period before shower and thunderstorm chances and higher humidity return later in the period. Temperatures near normal.

DAYS 1-5 (JULY 21-25)

A trough of low pressure will traverse the Northeast between today and early Thursday, with its associated surface low pressure area passing to our north. A warm front will approach the region today with thickening cloudiness and eventually showery weather later today through most of tonight, including some embedded heavier thunderstorms. The greatest opportunity for heavier rainfall appears to be mostly from the I-90 belt southward, but I am not expecting any severe thunderstorms to occur. We’ll see that activity exit off the coast by morning with a mix of sun and clouds and higher humidity Wednesday. As a cold front approaches, we’ll see the opportunity for showers and thunderstorms in one or two clusters or lines in the afternoon, although coverage may not be widespread. The character of the storms will be determined by how much clearing / sunshine there is to help destabilize the atmosphere and fire up the storms. Once the storms form, they can at least partially dictate their own motion through outflow boundaries and such features. I do think the majority of the activity by late afternoon and early evening will be near or east of I-95 as the frontal boundary should advance far enough for that to happen, and then anything that remains should fade rather quickly with the setting sun. However, the front will be slowing and still over southeastern MA / RI into Thursday morning, when additional showers may occur. After that, it pulls offshore. So the trend is for fair weather to return on Thursday then continue into the start of the weekend as high pressure builds in, providing pleasant weather including lower humidity.

TODAY: Clouds thicken. Showers arrive mid to late afternoon from west to east. Highs 75-82. Dew point rises into 60s. Wind S 5-15 MPH, gusts 20+ MPH South Coast.

TONIGHT: Cloudy. Areas of fog. Showers and thunderstorms likely, tapering off west to east pre-dawn. Lows 62-69. Dew point in 60s. Wind S 5-15 MPH, higher gusts.

WEDNESDAY: Sun/cloud mix. Scattered afternoon showers and thunderstorms lingering into early evening southeastern MA & RI. Highs 78-85. Dew point in 60s. Wind S to SW 5-15 MPH, higher gusts, shifting to W later in the day.

WEDNESDAY NIGHT: Lots of clouds southeastern MA & RI with a shower chance. Partly cloudy elsewhere. Lower elevation fog patches. Lows 61-68. Dew point lowers to near 60. Wind W up to 10 MPH.

THURSDAY: Morning clouds with additional showers possible RI and southeastern MA, then clearing. Elsewhere, mostly sunny. Highs 79-86. Dew point in 50s. Wind W 5-15 MPH.

THURSDAY NIGHT: Mostly clear. Interior low elevation fog patches. Lows 57-64. Dew point in 50s. Wind NW under 10 MPH.

FRIDAY: Mostly sunny. Highs 78-85, coolest coast. Dew point in 50s. Wind variable up to 10 MPH with coastal sea breezes.

FRIDAY NIGHT: Clear. Lows 56-63. Dew point near 50. Wind variable under 10 MPH.

SATURDAY: Mostly sunny. Highs 78-85, coolest coast. Dew point in 50s. Wind variable up to 10 MPH with coastal sea breezes.

DAYS 6-10 (JULY 26-30)

Shower and thunderstorm chances July 27-28 with a passing trough and again very late in the period. Temperatures near to slightly below normal. No major heat indicated.

DAYS 11-15 (JULY 31 – AUGUST 4)

Shower / t-storm chances early in the period (July 31), then a stretch of mainly fair weather to start August before shower / t-storm chances return late period. Temperatures not too far from normal.

DAYS 1-5 (JULY 20-24)

High pressure brings fair weather today, but you’ll notice a hazier look to the sky from both high clouds and high altitude smoke making a return. A trough and low pressure area will bring us unsettled weather Tuesday into Wednesday. Surface low pressure passes to our north during this time, and its warm front will thicken the cloud cover Tuesday leading to showers and embedded thunderstorms, heaviest in southern areas, later Tuesday and especially Tuesday night. The cold front trailing the passing low will move across the region during Wednesday with a couple opportunities for showers and thunderstorms. We’ll experience a bout of high humidity later Tuesday well into Wednesday until the front moves through, at which time we’ll see the humidity begin to lower again. Thursday and Friday will be fair and seasonable as high pressure builds into the region, with breezy conditions Thursday and less wind but with coastal sea breezes on Friday.

TODAY: Hazy sunshine with high altitude smoke. Highs 78-85, coolest coast. Dew point 50s. Wind variable up to 10 MPH with coastal sea breezes.

TONIGHT: Increasing clouds. Hazy. Lows 60-67. Dew point climbs toward 60. Wind S up to 10 MPH.

TUESDAY: Mostly cloudy. Hazy. Shower chances increase. Highs 76-83. Dew point 60+. Wind S 5-15 MPH.

TUESDAY NIGHT: Cloudy. Showers likely. Chance of thunderstorms. Areas of fog. Lows 62-69. Dew point in 60s. Wind S 5-15 MPH, higher gusts.

WEDNESDAY: Variably cloudy. Chance of showers and thunderstorms until mid afternoon but may linger until early evening in southeastern MA and RI. Highs 77-84. Dew point in 60s. Wind S to SW 5-15 MPH, higher gusts, shifting to W later in the day.

WEDNESDAY NIGHT: Clearing. Lows 60-67. Dew point falls to 50s. Wind W 5-15 MPH.

THURSDAY: Mostly sunny. Highs 79-86. Dew point in 50s. Wind W 5-15 MPH.

THURSDAY NIGHT: Mostly clear. Interior low elevation fog patches. Lows 57-64. Dew point in 50s. Wind NW under 10 MPH.

FRIDAY: Mostly sunny. Highs 78-85, coolest coast. Dew point in 50s. Wind variable up to 10 MPH with coastal sea breezes.

DAYS 6-10 (JULY 25-29)

Fair weather early period and end of period. Showers / thunderstorm chances with higher humidity in the July 27-28 time frame. Temperatures near to slightly below normal. No major heat indicated.

DAYS 11-15 (JULY 30 – AUGUST 3)

Shower / t-storm chances eyed July 30-31 otherwise mostly fair weather will be the rule. Temperatures somewhat variable but overall pretty close to normal.

DAYS 1-5 (JULY 19-23)

A cold front moves offshore this morning, taking a band of clouds that lingers over southeastern MA / RI with it. Also the smoke shield that was over our region yesterday still covers the region from I-90 southward as of sunrise but will also be pushed off to the south today. Other than some patchy stratocumulus clouds around this morning to midday, I expect today to turn out sunny with a nice blue sky, a refreshing breeze, low humidity, and after a bit of a cool feel to the air to start, a warmer afternoon. You can’t get much nicer a day than this in the middle of July in New England, so enjoy it if you can do so! High pressure provides fair and comfortable weather for Monday. The next trough from the west approaches Tuesday and passes through our region Tuesday night into Wednesday. This brings our next round of unsettled weather as surface low pressure passes to the north. Its warm front brings in a shower threat and higher humidity by later Tuesday, before its cold front sends a couple rounds of showers and thunderstorms across the region late Tuesday night into Wednesday. The question is how quickly the cold front moves through, ending the threat, and returning drier air to the region. Guidance trends show this may happen by mid afternoon Wednesday. Regardless of the timing of Wednesday unsettled weather’s ending, high pressure brings very nice summer weather to the region Thursday.

TODAY: Early clouds exit southeastern MA & RI as smoke departs southern areas leading to a mainly sunny day with a few passing clouds. Highs 79-86. Dew point falls to 50s. Wind W 5-15 MPH, gusts around 20 MPH.

TONIGHT: Clear. Fog patches low elevation areas. Lows 58-65. Dew point 50s. Wind drops to calm.

MONDAY: Hazy sunshine with high altitude smoke. Highs 78-85, coolest coast. Dew point 50s. Wind variable up to 10 MPH with coastal sea breezes.

MONDAY NIGHT: Partly cloudy. Potential high altitude smoke. Lows 60-67. Dew point climbs toward 60. Wind S up to 10 MPH.

TUESDAY: Mostly cloudy. Hazy. Shower chances increases. Highs 76-83. Dew point 60+. Wind S 5-15 MPH.

TUESDAY NIGHT: Mostly cloudy. Chance of showers. Areas of fog. Lows 62-69. Dew point in 60s. Wind S 5-15 MPH.

WEDNESDAY: Variably cloudy. Chance of showers and thunderstorms until mid afternoon. Highs 77-84. Dew point in 60s. Wind S to SW 5-15 MPH, higher gusts, shifting to W later in the day.

WEDNESDAY NIGHT: Clearing. Lows 60-67. Dew point falls to 50s. Wind W 5-15 MPH.

THURSDAY: Mostly sunny. Highs 79-86. Dew point in 50s. Wind W 5-15 MPH.

DAYS 6-10 (JULY 24-28)

Fair weather is expected to dominate for several days with a shower / t-storm threat returning toward the end of the period. Temperatures near to slightly below normal. No major heat indicated.

DAYS 11-15 (JULY 29 – AUGUST 2)

Shower / t-storm chances eyed July 30-31 otherwise mostly fair weather will be the rule. Temperatures somewhat variable but overall pretty close to normal.

DAYS 1-5 (JULY 18-22)

The next plume of Canadian wildfire smoke arrives today. While this plume will not be as dense as the one we experience at midweek, it will play some role in the reduction of visibility and may be detectable by smell for some. It won’t be as prominently visible overall due to the fact that we have low pressure passing to our north, and its warm front spreading a pretty extensive cloud shield into our region too. So while we have some limited sunshine in spots this morning, it will turn out to be a fairly sunless day, and the warm front will cause a round or two of showers to move through the region during this afternoon. Guidance ranges from a few hours of rain to just a brief bout of showers. I think what we see is somewhere in between, but I do think a fair percentage of the region will see the ground turn wet for a while between noon and 6 p.m. before we briefly enter the “warm sector” of the low and get a break. The low’s cold front will then cross our region this evening and tonight, with a pretty solid band of showers and thunderstorms. The greatest potential for stronger storms lies southwest of our region, but within the WHW forecast area some of the more notable activity would most likely be south of I-90. The short-range guidance (a few models) have been somewhat divergent on the exact timing of the heaviest activity. Currently, I’m leaning toward just after dark north and west, and a little later evening (after 10 p.m. to overnight) from the Boston-Providence corridor southeastward. Best plan is to monitor radar in real time if you have plans that involve travel or being outside, and as always check appropriate web pages etc. for updates on cancellations or postponements. The good news is that any rain we get is beneficial. The other good news is that Sunday will be a spectacular day. The front will have moved offshore pre-dawn, and we’ll be into an air mass similar to the one we experienced yesterday, mild air, low humidity, no rain, lots of sun, and smoke pushed back out of the region. High pressure dominates Monday, but we may see some smoke make a return to us at higher altitudes returning the hazy look to the sky. Another low pressure area will be passing to our north after that with current expectations being warm frontal rains on Tuesday and cold frontal showers and thunderstorms on Wednesday, with timing and details to-be-determined.

TODAY: Smoke & haze. Clouds increase. A period of showers crossing the region west to east this afternoon. Highs 77-84. Dew point rises toward 60. Wind S 5-15 MPH with gusts over 20 MPH.

TONIGHT: Mainly cloudy. A period of showers and thunderstorms west to east mid evening to after midnight, with some embedded downpours. A strong thunderstorm possible closer to the South Coast. Fog patches form late at night. Lows 62-69. Dew point 60+. Wind S 5-15 MPH which can be variable and gusty near any storms, shifting to W from west to east overnight.

SUNDAY: Sun and passing clouds. Highs 79-86. Dew point falls to 50s. Wind W 5-15 MPH.

SUNDAY NIGHT: Clear. Fog patches low elevation areas. Lows 58-65. Dew point 50s. Wind calm.

MONDAY: Hazy sunshine with high altitude smoke. Highs 78-85, coolest coast. Dew point 50s. Wind variable up to 10 MPH with coastal sea breezes.

MONDAY NIGHT: Partly cloudy. Potential high altitude smoke. Lows 60-67. Dew point climbs toward 60. Wind S up to 10 MPH.

TUESDAY: Mostly cloudy. Hazy. Shower chances increases. Highs 76-83. Dew point 60+. Wind S 5-15 MPH.

TUESDAY NIGHT: Mostly cloudy. Chance of showers. Areas of fog. Lows 62-69. Dew point in 60s. Wind S 5-15 MPH.

WEDNESDAY: Variably cloudy. Chance of showers and thunderstorms. Highs 77-84. Dew point in 60s. Wind S to SW 5-15 MPH, higher gusts.

DAYS 6-10 (JULY 23-27)

Fair weather is expected to dominate for several days with a shower / t-storm threat returning at the end of the period. Temperatures near to slightly below normal. No major heat indicated.

DAYS 11-15 (JULY 28 – AUGUST 1)

Shower / t-storm chances eyed for July 28 and July 30-31. Temperatures somewhat variable but overall pretty close to normal.

DAYS 1-5 (JULY 17-21)

Cleaner air from eastern Canada is with us today before some of the wildfire smoke plume to our south makes a comeback tonight into Saturday, before being pushed out again. High pressure dominates today. Low pressure passes north of our region this weekend. Its warm front will bring a round of showers Saturday afternoon, and it looks like the steadiest / heaviest rainfall will be south of I-90 from that front. Later at night, a cold front sweeps through with a round of showers and thunderstorms – quicker timing than previously expected. But, this means great weather returns for the day on Sunday, and there should be a reduction of smoke again, though we’ll watch for yet another come back of that by early next week. Speaking of early next week, I expect fair weather Monday with high pressure in control, followed by higher humidity and shower / thunderstorm chances later Tuesday as the next trough and frontal system arrives from the west.

TODAY: Abundant sun. Highs 78-85, coolest coast. Dew point 50s. Wind N to NE 5-15 MPH.

TONIGHT: High clouds move in and high altitude smoke returns. Lows 60-67. Dew point 50s. Wind NE to E up to 10 MPH.

SATURDAY: Clouds increase. High altitude smoke remains. Showers in the afternoon will be most prominent from I-90 southward, but a brief period of them is also possible to the north. Highs 78-85. Dew point near 60. Wind E to SE up to 10 MPH.

SATURDAY NIGHT: Lots of clouds. Showers and possibly a thunderstorm late evening to early overnight from west to east. Fog patches late. Lows 62-69. Dew point 60+. Wind S 5-15 MPH.

SUNDAY: Sun and passing clouds. Highs 79-86. Dew point falls to 50s. Wind W 5-15 MPH.

SUNDAY NIGHT: Clear. Fog patches low elevation areas. Lows 58-65. Dew point 50s. Wind calm.

MONDAY: Sunshine, but potential high altitude smoke. Highs 78-85, coolest coast. Dew point 50s. Wind variable up to 10 MPH with coastal sea breezes.

MONDAY NIGHT: Partly cloudy. Potential high altitude smoke. Lows 60-67. Dew point climbs toward 60. Wind S up to 10 MPH.

TUESDAY: Mostly cloudy. Hazy. Shower and thunderstorm chances increase later in the day. Highs 80-87. Dew point climbs through 60s. Wind S 5-15 MPH.

DAYS 6-10 (JULY 22-26)

Shower / t-storm chances greatest mid period with a system moving through from west to east. Otherwise mostly dry. Temperatures near normal, though somewhat variable.

DAYS 11-15 (JULY 27-31)

Shower / t-storm chances early period and period, with fair weather between. Temperatures near normal but somewhat variable.

DAYS 1-5 (JULY 16-20)

The thickest wildfire smoke plume drifted south of our area late yesterday and continues there today, but some of that smoke will make a come-back as we move through the day today, so while the sun is not “browned out” like much of yesterday, you’ll still notice a smoky haze in the sky with a tendency for it to become more noticeable as the day goes on. A cold front will drop southward from northern New England and can trigger a few showers and thunderstorms in southern NH and mainly northeastern MA from mid afternoon to early evening, but I’m not expecting widespread coverage from this activity, which will quickly fade as the sun sets. The front will move through the region and bring a cooler and drier air mass into the region on Friday, but as upper winds turn more westerly again we’ll see a late-day increase in both high clouds and high altitude smoke again on Friday. Unlike yesterday, I’m not expecting much smoke to get near the surface with the exception of a portion of this evening to early Friday mainly southwest of Boston before everything gets pushed to the south. Additional high altitude smoke is likely to be in the sky this weekend, though it may be obscured by quite a bit more cloudiness on Saturday as a warm front approaches from a low pressure area now destined to pass fairly far to our north early Sunday. Trying to figure out the track and behavior of this system leading up to this has been a challenge, but I do think it brings only a brief chance for a little rainfall on Saturday with the passage of its warm front, with most of the shower and possible thunderstorm activity occurring late Saturday night and early Sunday morning with its cold front, followed by a return to fair weather during the day on Sunday, with high pressure building in behind the front, continuing to provide fair weather through Monday as well.

TODAY: Sun becomes hazy due to high altitude smoke returning. Isolated thunderstorms mid afternoon to early evening southern NH and northeastern MA. Highs 81-88. Dew point nearing 60. Wind W 5-15 MPH with gusts 20+ MPH.

TONIGHT: Clouds depart but high altitude smoke thickens with pockets of near-surface smoke possible, especially west and south of Boston. Lows 60-67. Dew point 50s. Wind NW 5-15 MPH.

FRIDAY: Brighter sun returns. Highs 78-85, coolest coast. Dew point 50s. Wind N to NE 5-15 MPH.

FRIDAY NIGHT: Mostly clear to partly cloudy. Lows 60-67. Dew point 50s. Wind NE to E up to 10 MPH.

SATURDAY: Clouds increase. Chance of a shower. Highs 78-85. Dew point near 60. Wind E to SE up to 10 MPH.

SATURDAY NIGHT: Lots of clouds. Showers and possibly a thunderstorm late night west to east. Fog patches late. Lows 62-69. Dew point 60+. Wind S 5-15 MPH.

SUNDAY: Early clouds and lingering showers eastern areas, then lots of sun. Highs 78-85. Dew point falls to 50s. Wind W 5-15 MPH.

SUNDAY NIGHT: Clear. Fog patches low elevation areas. Lows 58-65. Dew point 50s. Wind calm.

MONDAY: Sunny. Highs 78-85, coolest coast. Dew point 50s. Wind variable up to 10 MPH with coastal sea breezes.

DAYS 6-10 (JULY 21-25)

Shower / t-storm chances greatest July 21, 23, 24. Overall pattern mainly dry. Temperatures near to above normal.

DAYS 11-15 (JULY 26-30)

Shower / t-storm chances greatest mid period. Still mainly dry overall. Temperatures near normal but somewhat variable.

DAYS 1-5 (JULY 15-19)

You’re now well aware that the smoke plume from Canada / Minnesota wildfires was squeezed and thickened by the jet stream, presenting much more impactfully in our region yesterday than predicted – enough to hold forecast high temperature down by several degrees, with virtual no 90+ readings in the WHW forecast area. The same will be true today and even part of Thursday, though no widespread 90+ readings were expected Thursday anyway. We’ll also see a reduction in humidity as a series of cold fronts drop through the region behind low pressure in eastern Canada, and breezy weather here between that low and high pressure to our south. We do run the chance of a quick-hitting shower or thunderstorm with the final front in the series in southern NH and eastern MA later Thursday, but that’s about it other than any early morning showers (remnants of thunderstorms) that pass through southern NH and eastern MA basically as I write this blog update. I don’t even think we’ll see much of anything trigger south of I-90 today as I had previously been expecting – maybe an isolated shower toward the South Coast should be about it. Friday’s set to be a less smoky, pleasant day with a nice northerly air flow and low humidity. Our weekend is still a little questionable. I’d been leaning toward more trough in eastern Canada deflecting an incoming disturbance to our southwest, but guidance is fighting me on this with its trend for a more northeastward track for the low. Ultimately, my estimation of eastern Canadian troughing was probably overcooked, but maybe so much so that the low coming our way will pass so far to the north, all we end up having to deal with are a couple of shower and t-storm threats from a warm frontal passage Saturday and a cold frontal passage Sunday. Obviously, timing and details are still in the process of being worked out, so generic wording today will hopefully be followed by more distinctive wording on the next update.

TODAY: Variably cloudy. Considerable high to mid altitude smoke. Passing plumes of near-surface smoke. Possible shower / t-storm very early southern NH / northeastern MA. Isolated South Coast shower later. Highs 83-90, cooler parts of Cape Cod / Islands. Dew point drops below 60. Wind NW 5-15 MPH, gusty.

TONIGHT: Smoke / haze. Patchy clouds. Lows 62-69. Dew point sub-60. Wind WNW 5-15 MPH.

THURSDAY: Smoke / haze thins. Partly cloudy. A late-day t-storm possible southern NH / eastern MA. Highs 82-89. Dew point sub-60. Wind W 5-15 MPH, higher gusts.

THURSDAY NIGHT: Clearing. Lows 60-67. Dew point 50s. Wind NW 5-15 MPH.

FRIDAY: Mostly sunny. Highs 80-87, except 75-82 some coastal areas of eastern MA / Cape Cod. Dew point 50s. Wind N to NE 5-15 MPH.

FRIDAY NIGHT: Mostly clear to partly cloudy. Lows 60-67. Dew point 50s. Wind NE to E up to 10 MPH.

SATURDAY: Clouds increase. Chance of a shower. Highs 78-85. Dew point near 60. Wind E to SE up to 10 MPH.

SATURDAY NIGHT: Lots of clouds. Chance of a shower. Lows 61-68. Dew point near 60. Wind SE to S 5-15 MPH.

SUNDAY: Variably cloudy. Chance of a thunderstorm. Highs 80-87. Dew point 60+. Wind S to SW 5-15 MPH.

DAYS 6-10 (JULY 20-24)

Shower / t-storm chances greatest July 21, 23, 24. Overall pattern mainly dry. Temperatures near to above normal.

DAYS 11-15 (JULY 25-29)

Shower / t-storm chances greatest mid period. Still mainly dry overall. Temperatures near normal but somewhat variable.

DAYS 1-5 (JULY 14-18)

Today we turn up the heat and humidity but keep it breezy between high pressure to our south and a vigorous low pressure area moving across southeastern Canada. The latter will trigger strong to severe thunderstorms in southern Quebec and northern New England later today into this evening, but that activity will fade as it heads southward, surviving as a few showers and possibly a thunderstorm in to southern NH and northern MA Wednesday morning, and regenerating as mainly isolated showers and storms south of I-90 midday into afternoon Wednesday before its triggering frontal boundary pushes away. That boundary will serve to knock down the humidity Wednesday while it will still be fairly hot. Another front heads southward into the region on Thursday and can trigger a few more showers and thunderstorms mainly later in the day, but that day will not be as hot as Wednesday. The cooling trend will continue into Friday as the second front pushes through the region and off to the south. Currently, I expect Saturday to feature fair weather, though there may be some high and mid level clouds to contend with, however it should be quite comfortable to be outside that day.

TODAY: Smoke-filtered sunshine along with patchy clouds. Highs 74-81 Nantucket and Outer Cape Cod, 82-89 remainder of South Coast, 90-97 elsewhere. Dew point climbs to middle / upper 60s. Wind SW 10-20 MPH.

TONIGHT: Mostly cloudy. An overnight shower or thunderstorm possible in southern NH and northern MA. Lows 66-73. Dew point 60+. Wind W 5-15 MPH.

WEDNESDAY: Partly sunny. A morning shower possible mainly in MA and then isolated midday to mid afternoon showers and thunderstorms possible south of I-90. Highs 80-87 Nantucket and Outer Cape Cod, 88-95 elsewhere. Dew point falls below 60. Wind W to NW 10-20 MPH, diminishing later in the day.

WEDNESDAY NIGHT: Mostly clear. Lows 63-70. Dew point sub-60. Wind NW up to 10 MPH.

THURSDAY: Partly cloudy. A shower or thunderstorm possible mainly southern NH and eastern MA late afternoon or evening. Highs 83-90. Dew point briefly spikes 60+. Wind W 5-15 MPH, gusts over 20 MPH.

THURSDAY NIGHT: Clear. Lows 60-67. Dew point falls to 50s. Wind NW 5-15 MPH.

FRIDAY: Sun and passing clouds. Highs 78-85. Dew point stays in 50s. Wind N 5-15 MPH but with coastal sea breezes developing.

FRIDAY NIGHT: Partly cloudy. Lows 58-65. Dew point 55 or lower. Wind N up to 10 MPH.

SATURDAY: Variably cloudy. Highs 78-85, coolest coast. Dew point in 50s. Wind NE to E up to 10 MPH.

DAYS 6-10 (JULY 19-23)

Still leaning dry but watching for the chance of a disturbance being close enough for a shower threat on July 19, but more likely to see higher humidity and shower chances the first half of next week. Temperatures somewhat variable but around normal overall.

DAYS 11-15 (JULY 24-28)

Drier early through mid period before shower and thunderstorm chances increase later in the period. Temperatures near to above normal.

DAYS 1-5 (JULY 13-17)

High pressure sits over our region to start the day today but sinks to the south as the day goes on, opening the door to increasing warmth and humidity which you’ll notice by this afternoon if you’re outside. At the same time, a disturbance that rode over the high pressure ridge to our west will make a run into the region as it weakens later today and this evening, potentially triggering isolated showers and thunderstorms, though the majority of the region will see nothing from that. You may notice a hazier look to the sky today as well. This is from high altitude smoke from fires occurring in Canada. Heat and humidity increases and peaks on Tuesday. A second surge of high altitude smoke will filter the sun a bit more in the afternoon. A cold front will be moving into northern New England and can trigger some strong to severe thunderstorms up there (western Maine, northern to central VT & NH), but that activity is expected to fade as it moves southward, and when the front goes through our region Wednesday morning, only a few showers may survive the trip across the region. While Wednesday is still a fairly hot day with no significant air mass change in terms of temperature, the dew point will drop as some drier air makes its away into the region from the northwest behind the front. I did mention the heat peaks Tuesday, but there is one exception, and that is the South Coast that has a southwest wind Tuesday and is not as hot, but gets a northwest wind on Wednesday, driving the heat into that region, making that day the peak hot one for that area. As our pattern continues to feature a low pressure trough in southeastern Canada and a high pressure ridge to our west, another cold front will move through during Thursday. This front will have limited moisture to work with, and therefore I’m expecting only scattered showers and thunderstorms as opposed to a sweeping line of them. This will introduce cooler and drier air for Friday.

TODAY: Sunshine become filtered by high altitude smoke, then interrupted by some later-day cloudiness including the chance of an isolated shower or thunderstorm, especially north and west of Boston. Highs 82-89. Dew point climbs to the lower 60s. Wind W to SW 5-15 MPH.

TONIGHT: High altitude smoke and patchy clouds. Lows 62-69. Dew point near 60. Wind W 5-15 MPH.

TUESDAY: Smoke-filtered sunshine along with passing clouds. Highs 74-81 Nantucket and Outer Cape Cod, 82-89 remainder of South Coast, 90-97 elsewhere. Dew point climbs to middle / upper 60s. Wind SW 10-20 MPH.

TUESDAY NIGHT: Mostly cloudy. Lows 66-73. Dew point 60+. Wind W 5-15 MPH.

WEDNESDAY: Partly sunny. A morning shower possible. Highs 80-87 Nantucket and Outer Cape Cod, 88-95 elsewhere. Dew point falls below 60. Wind W to NW 10-20 MPH, diminishing later in the day.

WEDNESDAY NIGHT: Mostly clear. Lows 63-70. Dew point sub-60. Wind NW up to 10 MPH.

THURSDAY: Partly cloudy. A thunderstorm possible. Highs 83-90. Dew point briefly spikes 60+. Wind W 5-15 MPH, gusts over 20 MPH.

THURSDAY NIGHT: Clear. Lows 60-67. Dew point falls to 50s. Wind NW 5-15 MPH.

FRIDAY: Sun and passing clouds. Highs 78-85. Dew point stays in 50s. Wind N 5-15 MPH but with coastal sea breezes developing.

DAYS 6-10 (JULY 18-22)

Expecting a trough in southeastern Canada to deflect incoming disturbances to the southwest of our region over the weekend of July 18-19, so while many forecasts don’t lean this way, mine leans rain-free with seasonable temperatures. The July 20-22 period presents greater chances for showers and thunderstorms along with higher humidity in the scenario I’m expecting.

DAYS 11-15 (JULY 23-27)

Higher humidity with shower and t-storm chances early in the period followed by drier weather again. Temperatures near to slightly above normal.

DAYS 1-5 (JULY 12-16)

High pressure continues to provide pleasant summer weather through Monday, but while we have plenty of sunshine, we will see an increase in high altitude smoke from fires in Canada, which will filter the sun. High pressure sinks to our south by Tuesday into Wednesday as low pressure tracks across southeastern Canada from west to east. This will bring us a breezy blast of heat with a wind shift from west to northwest early Wednesday as a trough passes by with nothing more than a brief shower chance. A stronger cold front drops into the region on Thursday with a better shower and t-storm chance then.

TODAY: A few patchy clouds otherwise lots of sun becoming filtered by increasing high altitude smoke. Highs 78-85. Dew point under 60. Wind W 5-15 MPH.

TONIGHT: High altitude smoke otherwise clear. Lows 61-68. Dew point under 60. Wind W up to 10 MPH.

MONDAY: Smoke-filtered sunshine. Some late-day cloud patches. Highs 82-89. Dew point nearing 60. Wind W to SW 5-15 MPH.

MONDAY NIGHT: High altitude smoke and patchy clouds. Lows 62-69. Dew point near 60. Wind W 5-15 MPH.

TUESDAY: Smoke-filtered sunshine along with passing clouds. Highs 82-89 South Coast, 90-97 elsewhere. Dew point 60+. Wind W 10-20 MPH.

TUESDAY NIGHT: Mostly cloudy. Lows 66-73. Dew point 60+. Wind W 5-15 MPH.

WEDNESDAY: Partly sunny. A morning shower possible. Highs 87-94 except cooler Cape Cod / Islands. Dew point 60+ but may fall to upper 50s. Wind W to NW 10-20 MPH, diminishing later in the day.

WEDNESDAY NIGHT: Mostly clear. Lows 63-70. Dew point near 60. Wind NW 5-15 MPH.

THURSDAY: Partly cloudy. A thunderstorm possible. Highs 81-88. Dew point near 60. Wind W 5-15 MPH, higher gusts.

DAYS 6-10 (JULY 17-21)

Contrary to a lot of guidance, I’m leaning rain-free July 17-19 at this point (a change from my previous outlook), followed by higher humidity and shower / t-storm chances later in the period.

DAYS 11-15 (JULY 22-26)

Higher humidity with shower and t-storm chances early to mid period followed by a drying trend. Temperatures near to above normal.

DAYS 1-5 (JULY 11-15)

High pressure provides great summer weather this weekend and Monday, then sinks to the south to allow a shot of heat in Tuesday and Wednesday. Two disturbances will pass by, one Tuesday night and another one later Wednesday, on the back side of low pressure passing to our north, but at this point it does not look like the timing will allow thunderstorms in southern Canada and northern New England to survive down into our region, but it will be something I’ll monitor.

TODAY: Filtered sun through high clouds this morning. Brighter sun and a few passing clouds this afternoon. Highs 78-85. Dew falls below 60. Wind NW 5-15 MPH.

TONIGHT: Mostly clear. Lows 58-65. Dew point in 50s. Wind W up to 10 MPH.

SUNDAY: Lots of sun. Highs 78-85. Dew point in 50s. Wind W 5-15 MPH.

SUNDAY NIGHT: Partly cloudy. Lows 61-68. Dew point nearing 60. Wind SW up to 10 MPH.

MONDAY: Partly cloudy. Highs 82-89, cooler South Coast. Dew point around 60. Wind SW 5-15 MPH.

MONDAY NIGHT: Partly cloudy. Lows 65-72. Dew point 60+. Wind SW 5-15 MPH.

TUESDAY: Partly cloudy. Highs 86-93. Dew point 65+. Wind SW 5-15 MPH.

TUESDAY NIGHT: Partly cloudy. Lows 66-73. Dew point near 60. Wind W 5-15 MPH.

WEDNESDAY: Partly cloudy. Highs 85-92. Dew point near 60. Wind NW 5-15 MPH.

DAYS 6-10 (JULY 16-20)

Shower and t-storm potential exists as low pressure passes to our north on the July 18-19 weekend. Additional details available as we get closer. Much of this period will feature rain-free weather and near to above normal temperatures.

DAYS 11-15 (JULY 21-25)

A generally seasonable pattern with brief shots of heat possible. Can’t rule out a few passing or pop-up storms but much of the time looks dry.

DAYS 1-5 (JULY 10-14)

We’re in the final hours of this bout of more humid and very warm weather as a cold front slips southward across the region today. The timing of this front is early enough so that the air mass will already be starting to dry out and stabilize north of I-90 by midday, with the greatest chance for shower and isolated thunderstorm activity occurring from the I-90 belt southward this afternoon and early evening. A westerly flow aloft may keep a canopy of cloudiness over much of the region from midday to early evening, but does set up the potential for a colorful sunset in some areas as it departs later on. (These colorful sunset predictions are iffy and highly dependent on location and fairly precise timing of clearing and your location relative to the edge of the cloud deck). Surface high pressure from Canada and a weak trough aloft combine to bring our region fair and pleasant summer weather Saturday through Monday. By Tuesday, the surface high drifts to our south, allowing it to heat up with more humidity. As previously mentioned, I’ll monitor upstream disturbances coming over the top of a high pressure ridge to our west for cloudiness (and perhaps a shower / t-storm threat) that can mess up the forecast as we head toward early next week, although I’m not expecting any big change potential at this time.

TODAY: Most sun morning. Least sun afternoon. Potential for showers and a possible thunderstorm mainly I-90 belt southward afternoon to early evening. Highs 74-81 South Coast, 82-89 elsewhere. Dew point around 70. Wind SW 5-15 MPH, a few higher gusts, shifting to NW from north to south.

TONIGHT: Clearing except patchy ground fog. Lows 63-70. Dew point falls toward 60. Wind NW up to 10 MPH.

SATURDAY: Sun and passing clouds. Highs 78-85. Dew point in 50s. Wind NW 5-15 MPH.

SATURDAY NIGHT: Mostly clear. Lows 58-65. Dew point in 50s. Wind W up to 10 MPH.

SUNDAY: Lots of sun. Highs 78-85. Dew point in 50s. Wind W 5-15 MPH.

SUNDAY NIGHT: Variably cloudy. Lows 61-68. Dew point nearing 60. Wind SW up to 10 MPH.

MONDAY: Partly cloudy. Highs 82-89, cooler South Coast. Dew point around 60. Wind SW 5-15 MPH.

MONDAY NIGHT: Partly cloudy. Lows 65-72. Dew point 60+. Wind SW 5-15 MPH.

TUESDAY: Partly cloudy. Highs 86-93. Dew point 65+. Wind SW 5-15 MPH.

DAYS 6-10 (JULY 15-19)

Front moves through with a shower and t-storm chance July 15 with a leaning toward first half of day. Watching shower potential from passing disturbance about July 17 otherwise mainly dry late next week. Temperatures show some typical variability but should average not far from normal for this time of year.

DAYS 11-15 (JULY 20-24)

No big changes to the outlook here. Generally seasonable pattern overall, but can contain a brief shot of hotter weather and a shower / t-storm chance when a disturbance or front passes by. Too far out to know timing on any of that potential.

DAYS 1-5 (JULY 9-13)

No significant changes today. High pressure sinks to our south and we heat up somewhat today, then have to watch for a couple showers and thunderstorms mainly well north and west of Boston later today as a disturbance approaches from the west. These fade this evening before the chance reappears Friday afternoon and early evening with a cold front moving through the region from northwest to southeast. This sets up a nice weekend with fair weather and warm but fairly dry air for the middle of July as high pressure builds in. This high sinks to the south and we see a bit more heat by the start of next week. Building high pressure to our west at upper level does mean we’ll have to be conscious of disturbances coming over the ridge and down our way in the northwesterly air flow aloft by later in the weekend and Monday. Sometimes the guidance does not pick up well on these several days in advance. So while the outlook currently calls for fair weather, keep in mind that can change quickly as we get to “days 4 & 5”.

TODAY: Mostly sunny to partly cloudy. A stray evening thunderstorm is possible in central MA and southern NH. Highs 77-84 South Coast, 85-92 elsewhere. Dew point near 60. Wind W 5-15 MPH.

TONIGHT: Partly cloudy. Lows 65-72. Dew point 60+. Wind SW 5-15 MPH.

FRIDAY: Variably cloudy. Chance of showers and thunderstorms, primarily late afternoon to early evening. Highs 82-89 except 75-82 South Coast. Dew point rises toward 70. Wind SW 10-20 MPH, higher gusts possible.

FRIDAY NIGHT: Partly cloudy. Chance of an evening shower. Lows 61-68. Dew point falls below 60. Wind shifting to NW 5-15 MPH.

SATURDAY: Sun and passing clouds. Highs 78-85. Dew point in 50s. Wind NW 5-15 MPH.

SATURDAY NIGHT: Mostly clear. Lows 58-65. Dew point in 50s. Wind W up to 10 MPH.

SUNDAY: Lots of sun, maybe more clouds late. Highs 80-87. Dew point in 50s. Wind W 5-15 MPH.

SUNDAY NIGHT: Variably cloudy. Lows 61-68. Dew point nearing 60. Wind SW up to 10 MPH.

MONDAY: Partly cloudy. Highs 85-92, cooler South Coast. Dew point around 60. Wind SW 5-15 MPH.

DAYS 6-10 (JULY 14-18)

Watching the period from July 14 to early July 15 for some higher humidity including shower and t-storm chances as low pressure passes north of the region. Fair weather mid to late period. Temperatures near to slightly above normal.

DAYS 11-15 (JULY 19-23)

Overall pattern fairly seasonable but a little temperature variability with one or two shower / t-storm chances with passing fronts from the west. No sustained high heat indicated.

DAYS 1-5 (JULY 8-12)

High pressure builds in today with fair weather and pleasantly dry air moving in. The high will sink to the south and allow it to heat up a little more on Thursday, but not to the levels of last week’s heat. While Thursday features mainly fair weather, I can’t rule out a stray thunderstorm wandering into areas mainly well west and north of Boston toward evening in response to a disturbance approaching from the west. This disturbance passes through at night, but with the loss of sunshine, fuel to sustain any storms will be lacking and I expect anything that did make it into the area to dissipate. On Friday, however, a cold front will move through the region during the afternoon and evening, with higher humidity in place ahead of it. This provides a better chance for a more widespread shower and thunderstorm occurrence. The front does sweep through Friday evening and night, and introduce fair weather and lower humidity for the weekend. As a high pressure ridge builds to our west, we may contend with some “spill-over” cloud cover by later on Sunday, otherwise it looks like abundant sun and a few fair weather clouds both weekend days.

TODAY: Early clouds mainly Cape Cod / South Coast, otherwise sunshine. Highs 80-87. Dew point falls under 60. Wind up to 10 MPH starts out N, shifts to E, then ends up S by day’s end.

TONIGHT: Clear. Fog patches interior low elevations. Lows 60-67. Dew point near 60. Wind S shifts to W under 10 MPH.

THURSDAY: Mostly sunny to partly cloudy. A stray evening thunderstorm is possible in central MA and southern NH. Highs 77-84 South Coast, 85-92 elsewhere. Dew point near 60. Wind W 5-15 MPH.

THURSDAY NIGHT: Partly cloudy. Lows 65-72. Dew point 60+. Wind SW 5-15 MPH.

FRIDAY: Variably cloudy. Chance of showers and thunderstorms. Highs 82-89 except 75-82 South Coast. Dew point rises toward 70. Wind SW 10-20 MPH, higher gusts possible.

FRIDAY NIGHT: Partly cloudy. Chance of an evening shower. Lows 61-68. Dew point falls below 60. Wind shifting to NW 5-15 MPH.

SATURDAY: Sun and passing clouds. Highs 78-85. Dew point in 50s. Wind NW 5-15 MPH.

SATURDAY NIGHT: Mostly clear. Lows 58-65. Dew point in 50s. Wind W up to 10 MPH.

SUNDAY: Lots of sun, maybe more clouds late. Highs 80-87. Dew point in 50s. Wind W 5-15 MPH.

DAYS 6-10 (JULY 13-17)

Watching the period from later July 13 to early July 15 for some higher humidity including shower and t-storm chances as low pressure passes north of the region. Fair weather returns later in the period. Temperatures slightly variable, averaging around normal.

DAYS 11-15 (JULY 18-22)

Overall pattern fairly seasonable but a little temperature variability with one or two shower / t-storm chances with passing fronts from the west. No sustained high heat indicated.