DAYS 1-5 (AUGUST 14-18)

Transition day! We start out in the hot/humid air mass we have been in during the last few days, although a cold front is heading this way and is going to cut across the region from northwest to southeast during the day, exiting via Cape Cod by tonight. This will deliver a cooler/drier air mass to our region, but to get there, we’ll have to go through a shower and thunderstorm threat. It still looks like a fairly low coverage event overall, with under 50% of the region seeing any activity of note, and possibly 25% or less of the region seeing the heaviest shower and thunderstorm activity. Of course, if you happen to be visited by one of these heavier storms, you can see briefly strong and gusty wind, torrential downpours, lightning, and even some small hail. This type of occurrence will be rather isolated though. For many, this change may be marked by clouds, a gusty breeze, and a lighter shower, or even no rain at all. But if you are out and about today, be prepared for a thunderstorm. This threat will decline rather quickly as we get to mid to late afternoon from northwest to southeast, with only the South Coast still seeing the chance of a shower or storm into early tonight. Sunday through Wednesday we will enjoy 4 days with no rainfall threat thanks to an area of high pressure that comes in from Canada, first sits off to the northwest and north of our area, then right over the region, and then slips off to the southeast. This will account for subtle changes during the fair weather stretch. Sunday’s weather will be governed by a light northerly air flow bringing in the driest air, and then the wind turns more easterly Monday with a more maritime feel, an uptick in humidity you won’t really notice because the air will still be refreshingly cool. Once we get to Tuesday and Wednesday, a more southerly air flow will transport higher humidity into the region, though not oppressive, and without the heat to accompany it. There will also be an increase in cloud cover by Wednesday, but still this 4-day stretch will be one of the best of the summer.

TODAY: Mostly sunny early, then variably cloudy with isolated to scattered showers and thunderstorms from late morning through afternoon, favoring southwestern NH and central MA first, then southeastern NH through eastern MA, eastern CT and RI early through mid afternoon, and areas to the southeast mid afternoon on. Isolated locations may see strong storms. Highs 84-91. Dew point near 70 but falling through the 60s from northwest to southeast by the end of the day. Wind SW 5-15 MPH shifting to NW.

TONIGHT: Clouds and a few showers/thunderstorms possible South Coast early, otherwise mostly clear. Lows 61-68. Dew point falling into 50s. Wind NW 5-15 MPH.

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

SUNDAY NIGHT: Clear. Patchy ground fog lower elevations. Lows 55-62. Dew point lower to middle 50s. Wind variable to N under 10 MPH.

MONDAY: Sunny. Highs 76-83, coolest coast. Dew point middle to upper 50s. Wind N to E up to 10 MPH.

MONDAY NIGHT: Clear. Patchy ground fog lower elevations. Lows 57-64. Dew point upper 50s. Wind variable under 10 MPH.

TUESDAY: Mostly sunny. Highs 78-85, coolest South Coast. Dew point upper 50s to 60. Wind variable up to S 10 MPH with coastal sea breezes.

TUESDAY NIGHT: Partly cloudy. Patchy fog. Lows 61-68. Dew point lower 60s. Wind S up to 10 MPH.

WEDNESDAY: Partly sunny. Highs 78-85, coolest South Coast. Dew point 60s. Wind S 5-15 MPH.

DAYS 6-10 (AUGUST 19-23)

High pressure off the Atlantic Coast helps open the door for some tropical moisture which results in warm and humid weather here with the daily chance of showers and thunderstorms, but also plenty of rain-free time too. We’ll have to watch for a frontal boundary approaching from the west later in the period which may enhance the shower/storm risk somewhat.

DAYS 11-15 (AUGUST 24-28)

This will continue to be the time period we need to keep an eye on tropical activity off the East Coast or remnant moisture coming this way by way of the Southeast / Mid Atlantic States. Again this is far out there in the future and there is no guarantee we end up seeing anything significant. In fact, high pressure that is forecast by guidance at this time to be to our west and north may very well build in and protect the region from unsettled weather. There will be a lot of fine-tuning to do with the late August forecast.

C-19 Chat Post – August 14 2021

DAYS 1-5 (AUGUST 13-17)

One more hot day from the Bermuda High before a cold front puts an end to the hot spell on Saturday – a transition day, then refreshing air by Sunday. First, more of the same today – sunshine, heat, and high humidity, but only the slight chance of a pop up air mass shower or thunderstorm later, although today’s high temperatures on average will likely come in a bit lower than yesterday’s, and the wind field is weak enough that a light sea breeze may develop at the shoreline, taking a few more degrees off the afternoon temperatures compared to yesterday. Similar to yesterday, a line of showers and thunderstorms will probably fire up over New York later, but today’s activity should occur further west and take longer to get into New England. However the remnants of that line may get into the WHW forecast area in the form of a few showers and possibly a thunderstorm sometime overnight (early hours of Saturday). The cold front responsible for that activity will then cross our region during late morning to late afternoon from west to east Saturday, and based on this timing combined with daytime heating, the greatest chance of showers and thunderstorms during the day Saturday will take place earliest (late morning-midday) in southern NH to central MA and eastern CT, then progress through the remainder of MA and RI early to mid afternoon exiting via Cape Cod later in the day. This frontal timing will not allow temperature to exceed 90 in most areas, and although it will start out quite humid, the passage of the front will deliver less humid air in rather rapid fashion as the day goes on. By Saturday night, we’ll have cleared out and much more comfortable air will have arrived, and this will be the case Sunday with lots of sun, mild air, and low humidity as high pressure builds in. This high will then sit over the region early next week with a great stretch of mid August weather.

TODAY: Mostly sunny to partly cloudy. Isolated afternoon showers and thunderstorms possible. Highs 88-95, cooler some coastal areas. Dew point lower 70s. Wind SW up to 10 MPH with light coastal sea breezes possible.

TONIGHT: Variably cloudy. A shower or thunderstorm possible overnight. Lows 70-77. Dew point upper 60s to lower 70s. Wind WSW up to 10 MPH.

SATURDAY: Variably cloudy. Scattered to numerous showers and thunderstorms from northwest to southeast late morning to late afternoon. Highs 82-89. Dew point lower to middle 70s falling into 60s. Wind SW 5-15 MPH shifting to NW.

SATURDAY NIGHT: Mostly clear. Lows 62-69. Dew point falling to upper 50s. Wind NW 5-15 MPH.

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

SUNDAY NIGHT: Clear. Patchy ground fog lower elevations. Lows 55-62. Dew point lower to middle 50s. Wind variable to N under 10 MPH.

MONDAY: Sunny. Highs 76-83, coolest coast. Dew point middle to upper 50s. Wind N to E up to 10 MPH.

MONDAY NIGHT: Clear. Patchy ground fog lower elevations. Lows 57-64. Dew point upper 50s. Wind variable under 10 MPH.

TUESDAY: Mostly sunny. Highs 78-85. Dew point upper 50s to 60. Wind variable up to 10 MPH with coastal sea breezes.

DAYS 6-10 (AUGUST 18-22)

High pressure holds with dry and seasonably warm weather for August 18. High pressure shifts offshore with higher humidity and chance of showers by August 19. August 20-22 indications are for a southwesterly flow with a daily opportunity for showers and thunderstorms as a frontal boundary moves into the region from the west. Does not look like an overly wet pattern, however.

DAYS 11-15 (AUGUST 23-27)

Uncertainty for this period pending the movement of a frontal boundary nearby and the potential for some tropical activity near the US East Coast. For now continuing with the idea of fairly humid and seasonably warm weather with the occasional chance for showers and thunderstorms amidst plenty of rain-free time.

C-19 Chat Post – August 13 2021

DAYS 1-5 (AUGUST 12-16)

The Bermuda High will do its thing for 2 more days, through Friday, with heat and humidity being the rule and thunderstorms being the exception. Only a few may wander into the area later this evening that had formed to the west, and as a cold front begins an approach to the region, the same may happen later Friday night, but there is only the slight chance that any isolated storms can pop up during the afternoon heat as, despite the heat and humidity, we don’t have much in the way of any triggers for them. Reminder #1: If you are outside, try to stay out of direct sun and do as much activity as possible before and after the highest sun angles of the day. Reminder #2: Perseid Meteor Shower continues at peak, but some limited visibility due to haze / smoke / and patchy clouds. Still, the best time to try viewing them high in the northeast sky to overhead is midnight to first light Friday morning. The aforementioned cold front will be making its charge across our area during Saturday morning and midday with our best chance of showers and thunderstorms occurring then. Whether any given location sees that activity or not, the heat and humidity will break that day and by Saturday night, Sunday, and on into Monday, much more comfortable air will be here with a high pressure area building into the region from Canada.

TODAY: Partly cloudy. Isolated afternoon thunderstorms possible. Highs 91-98, cooler in some coastal areas especially the South Coast. Dew point lower to middle 70s. Wind SW 5-15 MPH.

TONIGHT: Partly cloudy. Patchy ground fog. Chance of a shower or thunderstorm mainly west and northwest of Boston late evening. Lows 72-79, warmest in urban centers. Dew point lower to middle 70s. Wind SW under 10 MPH.

FRIDAY: Partly cloudy. Isolated afternoon thunderstorms. Highs 90-97, possibly cooler coastal areas. Dew point lower 70s. Wind SW up to 10 MPH with light coastal sea breezes possible.

FRIDAY NIGHT: Variably cloudy. A shower or thunderstorm possible overnight. Lows 70-77. Dew point upper 60s to lower 70s. Wind WSW up to 10 MPH.

SATURDAY: Variably cloudy. Chance of showers and thunderstorms, especially morning and midday. Highs 82-89. Dew point lower to middle 70s falling into 60s. Wind SW 5-15 MPH shifting to NW.

SATURDAY NIGHT: Mostly clear. Lows 62-69. Dew point falling to upper 50s. Wind NW 5-15 MPH.

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

SUNDAY NIGHT: Clear. Patchy ground fog lower elevations. Lows 55-62. Dew point lower to middle 50s. Wind variable to N under 10 MPH.

MONDAY: Sunny. Highs 76-83, coolest coast. Dew point middle to upper 50s. Wind N to E up to 10 MPH.

DAYS 6-10 (AUGUST 17-21)

High pressure should keep the region dry with low to moderate humidity through the middle of the period before humidity starts to increase and the shower threat starts to appear later in the period, pending the movement of moisture to the south and southwest of New England.

DAYS 11-15 (AUGUST 22-26)

High pressure off the US East Coast with a south to southwest flow of more humid air and we’ll have to watch some tropical moisture and a couple disturbances for shower threats.

C-19 Chat Post – August 12 2021

DAYS 1-5 (AUGUST 11-15)

It’s Bermuda High time! The next 3 days will feature the classic New England hot and humid summer weather courtesy high pressure anchored off the US East Coast, centered in the vicinity of Bermuda. This means high temperatures over 90 for most areas except for a few coastal areas that may fall shy of 90. Boston’s high temps will fall shy of records all three days, which sit between 99 and 101 (all set during a brutal 1944 heat wave). Nevertheless, for the city it’ll be hot and muggy for the stretch with the only chance of a bit of temporary natural relief coming in the form of a possible feeble sea breeze on Friday as the wind field weakens temporarily, allowing that possibility. As for thunderstorm threats, despite the heat and humidity, we will lack strong triggers for storms, with most of those developing each afternoon well to the west. If they can organize into lines, the remains of them can make their way into the WHW forecast area both tonight and Thursday night but would likely be fading away and have minimal impact. Nevertheless, we’ll have to watch for that and otherwise just a few possible isolated air mass storms popping up any afternoon today through Friday. One other note: The Perseid Meteor Shower peaks the next couple of nights, and while we have the moon out of the way this time, what may not be out of the way are some clouds at times, as well as possibly some patches of high altitude smoke. However, some of the meteors should be visible for at least part of each night. Peak time to see them is after midnight to about first light. The thin and fast-moving meteors radiate outward from Perseus, high in the northeastern sky then gradually moving toward overhead as the overnight goes on. A reclining lawn chair and as little light pollution as possible will maximize your view, pending the cooperation of the weather. The heat will be broken by a cold front sweeping across the region Saturday. There is disagreement among the guidance as to the timing of this front. For example one piece of fairly reliable guidance brings the front across the region Saturday morning with limited shower activity, while the other says it’ll be an afternoon passage with a more solid line of showers and thunderstorms. At the moment I am still leaning toward the earlier passage with a day that starts muggy, has its shower threat mostly early, and ends drier, but this forecast is subject to change so check for updates. What is quite certain is that Sunday will be a very pleasant summer day thanks to high pressure that builds in from southern Canada.

TODAY: Partly cloudy. Isolated afternoon thunderstorms favoring central MA and southwestern NH. Highs 88-95, cooler in a few areas near the South Coast. Dew point upper 60s to lower 70s. Wind SW 5-15 MPH.

TONIGHT: Partly cloudy. A brief shower possible mainly well west and northwest of Boston. Patchy fog. Lows 67-74. Dew point upper 60s to lower 70s. Wind SW under 10 MPH.

THURSDAY: Partly cloudy. Isolated afternoon thunderstorms possible. Highs 91-98, cooler in some coastal areas especially the South Coast. Dew point lower to middle 70s. Wind SW 5-15 MPH.

THURSDAY NIGHT: Partly cloudy. A slight chance of a brief shower mainly north and west of Boston. Patchy fog. Lows 72-79, warmest in urban centers. Dew point lower to middle 70s. Wind SW under 10 MPH.

FRIDAY: Partly cloudy. Isolated afternoon thunderstorms. Highs 90-97, possibly cooler coastal areas. Dew point lower 70s. Wind SW up to 10 MPH with coastal sea breezes possible.

FRIDAY NIGHT: Partly cloudy. A shower or thunderstorm possible overnight. Lows 70-77. Dew point upper 60s to lower 70s. Wind WSW up to 10 MPH.

SATURDAY: Variably cloudy. Chance of showers and thunderstorms, especially morning and midday. Highs 82-89. Dew point lower to middle 70s falling into 60s. Wind SW 5-15 MPH shifting to NW.

SATURDAY NIGHT: Mostly clear. Lows 62-69. Dew point falling to upper 50s. Wind NW 5-15 MPH.

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

DAYS 6-10 (AUGUST 16-20)

While we’ll have to keep an eye to the south to some moisture there, right now it appears that high pressure may remain in control over our region for most of if not the entire period with dry weather and low to moderate humidity, as well as a lack of significant heat – only a gradual warming.

DAYS 11-15 (AUGUST 21-25)

High pressure may shift offshore with increased warmth and humidity and also a better chance of shower activity during these days. Also as previously mentioned, need to possibly keep an eye out for tropical activity to the south, or remnant moisture approaching from the southwest, pending the development and movement of system(s) in the Atlantic basin.

C-19 Chat Post – August 11 2021

DAYS 1-5 (AUGUST 10-14)

A low pressure near just off the southeastern New England coast near Cape Cod will drift away to the east today and a warm front will move northeastward across the region during this afternoon and early evening. This means today will be a transition day from the cooler and cloudier but humid weather to breaking clouds with an increase in warmth and further increase in humidity. This is setting us up for three days of classic summer heat and humidity Wednesday through Friday as the Bermuda High sits off the US East Coast. Thunderstorm chances will be limited to isolated and mainly well west of Boston Wednesday, greater on Thursday as a trough approaches, and a slight bit less on Friday as the atmosphere may be a little more stable than Thursday, but yet there will still be a chance that day too. Saturday, a cold front will sweep across the region from northwest to southeast, putting an end to the high heat and knocking the humidity down. The timing of this front will determine when the best chance of showers and possible thunderstorms occur, and the coverage of any activity. Leaning toward the morning and/or midday hours for the main impact of this front for the WHW forecast area, but at day 5 there is some uncertainty on this…

TODAY: Mostly cloudy with patchy fog and a possible shower this morning. Becoming partly sunny this afternoon. Highs 77-84, coolest coast. Dew point middle to upper 60s. Wind SE up to 10 MPH shifting to S.

TONIGHT: Partly cloudy. An isolated shower possible. Patchy fog. Lows 66-73. Dew point middle to upper 60s. Wind SW up to 10 MPH.

WEDNESDAY: Partly cloudy. Isolated afternoon thunderstorms favoring central MA and southwestern NH. Highs 88-95. Dew point upper 60s to lower 70s. Wind SW 5-15 MPH.

WEDNESDAY NIGHT: Partly cloudy. Patchy fog. Lows 67-74. Dew point upper 60s to lower 70s. Wind SW under 10 MPH.

THURSDAY: Partly cloudy. Isolated to scattered afternoon thunderstorms. Highs 91-98, cooler in some coastal areas especially the South Coast. Dew point lower to middle 70s. Wind SW 5-15 MPH.

THURSDAY NIGHT: Partly cloudy. Patchy fog. Lows 72-79, warmest in urban centers. Dew point lower to middle 70s. Wind SW under 10 MPH.

FRIDAY: Partly cloudy. Isolated afternoon thunderstorms. Highs 90-97, cooler South Coast / Cape Cod. Dew point lower 70s. Wind WSW 5-15 MPH.

FRIDAY NIGHT: Partly cloudy. Lows 70-77. Dew point upper 60s to lower 70s. Wind WSW up to 10 MPH.

SATURDAY: Variably cloudy. Chance of showers and thunderstorms, especially morning and midday. Highs 82-89. Dew point lower to middle 70s falling into 60s. Wind SW 5-15 MPH shifting to NW.

DAYS 6-10 (AUGUST 15-19)

High pressure is expected to build over the region but centered more to the north, bringing a cooler and less humid stretch of days from the end of the weekend into the middle of next week. May have an increase in humidity and a shower threat by the very end of the period as high pressure shifts to the east.

DAYS 11-15 (AUGUST 20-24)

High pressure should sink to the south opening the door to more humidity and better chances for shower activity again during this period. Also need to keep an eye out for tropical activity to the south mid to late period, pending potential development and movement of one or two systems in the Atlantic Basin.

C-19 Chat Post – August 10 2021

DAYS 1-5 (AUGUST 9-13)

A frontal boundary and area of low pressure just to the south of New England will combine to make today fairly cloudy and on the cooler side of normal. Showers extending from parts of RI across parts of the MA South Coast including Martha’s Vineyard as of 7 a.m. will linger there and also expand eastward across much of Cape Cod including Nantucket before diminishing. A few more showers may pop up a little further north with the heating of the day, but these will be limited. The frontal boundary to the south will lift northeastward across the region as a warm front Tuesday with some cloudiness and perhaps an isolated shower, otherwise it will introduce warmer and more humid air again. Then the classic Bermuda High heat hump will set up shop from Wednesday through Friday with very warm to hot and humid weather. Each of those afternoons will carry the chance of isolated to scattered shower and thunderstorm activity, with a gradual increase in chances and coverage each afternoon as it looks now.

TODAY: Mostly cloudy. Showers likely from RI to far southeastern MA into mid morning then diminishing. Isolated showers anywhere this afternoon. Areas of fog early. Highs 75-82, coolest in coastal areas. Wind NE to E 5-15 MPH.

TONIGHT: Mostly cloudy. Patchy fog. Lows 62-69. Dew point lower to middle 60s. Wind SE under 10 MPH.

TUESDAY: Variably cloudy. A shower possible, mostly during the morning. Highs 77-84, coolest coast. Dew point middle to upper 60s. Wind SE up to 10 MPH shifting to S.

TUESDAY NIGHT: Partly cloudy. Patchy fog. Lows 66-73. Dew point middle to upper 60s. Wind SW up to 10 MPH.

WEDNESDAY: Partly cloudy. Isolated afternoon thunderstorms. Highs 86-93. Dew point upper 60s to lower 70s. Wind SW 5-15 MPH.

WEDNESDAY NIGHT: Partly cloudy. Patchy fog. Lows 67-74. Dew point upper 60s to lower 70s. Wind SW under 10 MPH.

THURSDAY: Partly cloudy. Isolated to scattered afternoon thunderstorms. Highs 87-94. Dew point lower 70s. Wind SW 5-15 MPH.

THURSDAY NIGHT: Partly cloudy. Patchy fog. Lows 68-75. Dew point upper 60s to lower 70s. Wind SW under 10 MPH.

FRIDAY: Partly sunny. Scattered afternoon thunderstorms. Highs 88-95. Dew point lower 70s. Wind SW 5-15 MPH.

DAYS 6-10 (AUGUST 14-18)

A cold front comes through the region most likely morning and midday Saturday (Aug 14) with a chance of showers/thunderstorm favoring eastern and southern areas before drier and slightly cooler air arrives. High pressure builds in with pleasantly dry weather Sunday (Aug 15). High pressure may sit over the region with continued fair weather and a gradual warming trend for the balance of the period. Possibility that some moisture approaches from the south by the end of the period.

DAYS 11-15 (AUGUST 19-23)

High pressure should sink to the south opening the door to more humidity and better chances for shower activity again during this period. Also need to keep an eye out for tropical activity to the south mid to late period, pending potential development in the Atlantic Basin.

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C-19 Chat Post – August 9 2021

DAYS 1-5 (AUGUST 8-12)

Our region will be between an approaching cold front from the north and a weak area of low pressure to the south today with lots of clouds around. Showers are most likely near the South Coast in association with the low to the south, but the approaching front will trigger a few showers in southern NH and MA during the day as well, though these will be rather isolated. Lingering showers are expected tonight with the low to the south while any showers that developed ahead of the front will fade and dissipate early on. The front will slip through the region and high pressure to the north will switch the wind around to the east across the area for Monday, with cooler but still slightly humid air. A few additional showers into Monday will favor areas mostly from I-90 southward as the frontal boundary and low pressure area will be sitting just south of New England. The low will weaken and move away and the front will come back northeastward as a warm front during Tuesday, opening the door for a more classic summertime feel by midweek with a warm to hot and humid southwesterly air flow and the daily chance of a few showers and thunderstorms both Wednesday and Thursday, with the greater chance of those being on Thursday afternoon.

TODAY: Mostly cloudy. Scattered showers mainly South Coast region. Isolated afternoon showers southern NH / northern MA. Highs 77-84, coolest in coastal areas. Dew point lower to middle 60s. Wind variable to SE up to 10 MPH.

TONIGHT: Mostly cloudy. Chance of showers, mainly near the South Coast. Patchy fog. Lows 62-69. Wind N to NE up to 10 MPH.

MONDAY: Mostly cloudy. Isolated showers, mainly near and south of I-90. Highs 75-82. Dew point middle 60s. Wind NE to E 5-15 MPH.

MONDAY NIGHT: Mostly cloudy. Patchy fog. Lows 62-69. Dew point lower to middle 60s. Wind SE under 10 MPH.

TUESDAY: Variably cloudy. A shower possible, mostly during the morning. Highs 77-84, coolest coast. Dew point middle to upper 60s. Wind SE up to 10 MPH shifting to S.

TUESDAY NIGHT: Partly cloudy. Patchy fog. Lows 66-73. Dew point middle to upper 60s. Wind SW up to 10 MPH.

WEDNESDAY: Partly cloudy. Isolated afternoon thunderstorms. Highs 86-93. Dew point upper 60s to lower 70s. Wind SW 5-15 MPH.

WEDNESDAY NIGHT: Partly cloudy. Patchy fog. Lows 67-74. Dew point upper 60s to lower 70s. Wind SW under 10 MPH.

THURSDAY: Partly sunny. Scattered afternoon thunderstorms. Highs 87-94. Dew point lower 70s. Wind SW 5-15 MPH.

DAYS 6-10 (AUGUST 13-17)

Heat, humidity, and thunderstorms as a cold front approaches on August 13. Front pushes offshore and high pressure moves in with drier weather for the August 14-15 weekend then high pressure may remain over the region with continued dry weather through the end of the period.

DAYS 11-15 (AUGUST 18-22)

Overall pattern looks dry with high pressure in control, but high pressure should sink to the south with time allowing it to become more humid again with an eventual increase in the shower and thunderstorm chance. We may also need to keep an eye on potential tropical activity in the Atlantic off the US East Coast by later in the period.

C-19 Chat Post – August 8 2021

DAYS 1-5 (AUGUST 7-11)

A small area of high pressure keeps the region mainly dry today, but a weak trough approaching from the north may be enough to trigger a few isolated shower or thunderstorms in southern NH and maybe north central MA by late afternoon into evening before they fade away with the setting sun, which will otherwise be filtered today by a combination of high clouds and some high altitude smoke that we’ve seen several times so far this summer. As we get to tonight and Sunday, we’ll be in between an approaching front from the north and a weak area of low pressure to the south of New England. The front will help trigger a few isolated to scattered showers and thunderstorms during the day Sunday, especially in southern NH and northern MA, while the low to the south may send a few showers into the South Coast region a few times during Sunday. This system will still be sitting there but drifting slowly northeastward during Monday while the front will have pushed southward across the region and high pressure builds over eastern Canada. This combination may result in a few lingering showers into early Monday mainly over RI and eastern MA, otherwise a cooler maritime air flow will dominate the region during Monday. This gradually shifts to a more southeast to southerly air flow during Tuesday as the front that had gone by from the north later Sunday will be coming back northeastward as a warm front, and this will bring some clouds and possibly a shower to a few areas Tuesday but otherwise expect dry weather. The feel of summer is back for Wednesday with high pressure building off the US East Coast and increasing heat and humidity in our region as a result.

TODAY: Filtered sunshine. A pop up shower or thunderstorm possible southern NH late-day. Highs 83-90, cooler South Coast. Dew point 60s. Wind SW 5-15 MPH.

TONIGHT: Mostly cloudy. Patchy fog. Lows 63-70. Dew point 60s. Wind SW up to 10 MPH.

SUNDAY: Variably cloudy. Isolated to scattered mainly afternoon showers and thunderstorms favoring southern NH and northern MA. A few showers possible near the RI and MA South Coast. Highs 82-89, cooler South Coast. Dew point 60s. Wind variable up to 10 MPH.

SUNDAY NIGHT: Variably cloudy. Chance of showers mainly RI and southeastern MA. Patchy fog. Lows 58-65. Dew point near 60. Wind variable up to 10 MPH shifting to NE.

MONDAY: Variably cloudy morning with a chance of showers RI and eastern MA. Mostly sunny afternoon. Highs 76-83, coolest coast. Dew point near 60. Wind E 5-15 MPH.

MONDAY NIGHT: Partly cloudy. Patchy fog. Lows 59-64. Dew point upper 50s to lower 60s. Wind E under 10 MPH.

TUESDAY: Variably cloudy. A shower possible. Highs 77-84, coolest coast. Dew point lower 60s. Wind SE up to 10 MPH.

TUESDAY NIGHT: Variably cloudy. A shower possible early. Lows 65-72. Dew point lower to middle 60s. Wind S up to 10 MPH.

WEDNESDAY: Partly cloudy. Highs 85-92. Dew point middle to upper 60s. Wind SW 5-15 MPH.

DAYS 6-10 (AUGUST 12-16)

High pressure remains off the East Coast while a frontal boundary slowly approaches from the northwest increasing the chance of showers and thunderstorms during August 12-13. Drier air should arrive with Canadian high pressure moving in during the August 14-15 weekend continuing through the end of the period.

DAYS 11-15 (AUGUST 17-21)

Overall pattern looks dry with high pressure in control, but high pressure should sink to the south with time allowing it to become more humid again with an eventual increase in the shower and thunderstorm chance. We may also need to keep an eye on potential tropical activity in the Atlantic off the US East Coast by this time, at least by later in the period.