DAYS 1-5 (SEPTEMBER 17-21)

A low pressure area that brought some heavy rain and areas of flooding to portions of the southern Middle Atlantic Coast will be weakening as it heads northeastward, passing southeast of our region through Thursday. While this system will provide varying amounts of cloudiness, its only rainfall offering will be in the form of a few showers near the South Coast tonight and early Thursday with no help for our ongoing and expanding drought. Friday, a sharp cold front moves through from north to south, but the timing on that front is such that it will allow Friday to be the warmest day of this week ahead of the arrival of a much cooler air mass for the weekend. The front will produce no showers, only some clouds, as it passes through. High pressure will deliver plenty of sunshine for the days of the weekend.

TODAY: Limited sun / lots of cloudiness. Highs 66-73, coolest coast. Wind NE to E up to 10 MPH except 10-20 MPH by late day Outer Cape Cod.

TONIGHT: Mostly cloudy. Patchy fog. Isolated to scattered showers South Coast overnight. Lows 51-58. Wind E to NE up to 10 MPH.

THURSDAY: Lots of clouds through midday region-wide including a morning shower chance South Coast. Increasing sun west to east afternoon. Highs 72-79. Wind variable to SW up to 10 MPH.

THURSDAY NIGHT: Mostly clear. Patchy fog. Lows 52-59. Wind SW up to 10 MPH.

FRIDAY: Sun and passing clouds. Highs 75-82. Wind SW 5-15 MPH, shifting to NW.

FRIDAY NIGHT: Clear. Lows 47-54. Wind NW 5-15 MPH.

SATURDAY: Mostly sunny. Highs 63-70. Wind N 5-15 MPH, diminishing late.

SATURDAY NIGHT: Clear. Lows 38-45 inland low elevations, 45-52 elsewhere – mildest in urban centers. Wind calm.

SUNDAY: Mostly sunny. Highs 65-72. Wind variable to S up to 10 MPH.

DAYS 6-10 (SEPTEMBER 22-26)

The Autumnal Equinox signals the start of fall at 2:19 p.m. September 22. That day and the day after look fair and mild with high pressure offshore. Watching for a shower chance middle of next week with the next frontal system, followed by fair and cooler weather later in the week.

DAYS 11-15 (SEPTEMBER 27 – OCTOBER 1)

Leaning dry, seasonable, though some variation and maybe 1 or 2 brief shower chances during this period. Still a low confidence forecast period.

DAYS 1-5 (SEPTEMBER 16-20)

An extensive deck of stratus and fog has enveloped much of the region overnight and will persist into this morning before dissipating to reveal sunshine again, which will be filtered at times by high clouds fanning up from low pressure to our south. That low, while not having a hard impact on our region, will pass close enough during midweek to thicken up its cloud shield and toss a few showers into the region later Wednesday to earl Thursday. Unfortunately, we won’t see a widespread, beneficial rain, which is badly needed as the overall dry pattern intensifies developing / existing drought conditions. After that system exits, high pressure regains control of the weather for the remainder of Thursday, through Friday, before being replaced by another one building in from eastern Canada with a cooler air mass to start the weekend. The cold front that introduces the Canadian high will pass by with little fanfare, other than a shift of the wind.

TODAY: Fog & stratus give way to sun & high clouds. Highs 71-78, coolest coast. Wind variable up to 10 MPH with developing coastal sea breezes.

TONIGHT: High clouds increase above lower elevation low cloud / fog patches. Lows 45-52. Wind calm.

WEDNESDAY: Limited sun / lots of cloudiness. Highs 66-73, coolest coast. Wind NE to E up to 10 MPH except 10-20 MPH by late day Outer Cape Cod.

WEDNESDAY NIGHT: Mostly cloudy. Patchy fog. Isolated to scattered showers, favoring areas east of I-95 and south of I-90. Lows 51-58. Wind E to NE up to 10 MPH.

THURSDAY: Lots of clouds and a chance of a shower – mainly south and east – to start, then breaking / decreasing clouds with more sun as the day goes on. Highs 72-79. Wind variable to SW up to 10 MPH.

THURSDAY NIGHT: Mostly clear. Patchy fog. Lows 52-59. Wind SW up to 10 MPH.

FRIDAY: Sun and passing clouds. Highs 75-82. Wind SW 5-15 MPH, shifting to NW.

FRIDAY NIGHT: Clear. Lows 47-54. Wind NW 5-15 MPH.

SATURDAY: Mostly sunny. Highs 63-70. Wind N 5-15 MPH, diminishing late.

DAYS 6-10 (SEPTEMBER 21-25)

High pressure shifts southward with fair weather early period and after a chilly start September 21, a moderation into early next week. Watch for a front middle of next week with maybe a shower threat, then another high pressure area moves in with more fair weather. Autumn begins with the occurrence of the equinox at 2:19 p.m. EDT on September 22.

DAYS 11-15 (SEPTEMBER 26-30)

Guidance inconsistency tosses some uncertainty into the outlook for this period, but for now I lean toward no big changes to the pattern overall, maybe a bit warmer than previously, relative to normal, and a couple shower threats from passing fronts, but the details uncertain and TBD over time as we approach the end of the month.

DAYS 1-5 (SEPTEMBER 15-19)

High pressure over eastern Canada provides fair weather today into Wednesday. Later Wednesday to early Thursday our stretch of fair weather is interrupted by the passage of low pressure to our south. A cloud shield from the low will move up into the region, but like a similar set-up last week, the rain will struggle to get too far north and favors the South Coast region for impact, while much of the region likely sees no rainfall from it. High pressure re-gains control of the weather later Thursday into Friday. Sometime on Friday, expect the passage of a cold front without showers but with a wind shift.

TODAY: Fog patches low elevations early, otherwise dominant sunshine with a few high clouds. Highs 71-78, coolest coast. Wind NW to N up to 10 MPH into midday with developing coastal sea breezes in the afternoon.

TONIGHT: Mostly clear. Low elevation fog patches. Lows 43-50. Wind calm.

TUESDAY: Mostly sunny. Highs 71-78. Wind variable up to 10 MPH with coastal sea breezes.

TUESDAY NIGHT: Mostly clear. Low elevation fog patches. Lows 43-50. Wind calm.

WEDNESDAY: Clouds increase. Highs 67-74. Wind NE to E up to 10 MPH.

WEDNESDAY NIGHT: Mostly cloudy. Rain possible for a while South Coast. Lows 47-54. Wind E up to 10 MPH.

THURSDAY: Clouds decrease. Highs 72-79. Wind variable to SW up to 10 MPH.

THURSDAY NIGHT: Mostly clear. Patchy fog. Lows 50-57. Wind SW up to 10 MPH.

FRIDAY: Partly cloudy. Highs 75-82. Wind SW 5-15 MPH, shifting to NW.

DAYS 6-10 (SEPTEMBER 20-24)

High pressure from Canada delivers fair, cooler weather for the September 20-21 weekend. High pressure maintains control of the weather into next week with additional dry weather dominating along with a slight temperature moderation. We will have to watch a couple low pressure systems to the west and south but they would likely struggle to have much impact. Autumn begins with the occurrence of the equinox at 2:19 p.m. EDT on September 22.

DAYS 11-15 (SEPTEMBER 25-29)

Again watching areas of low pressure / moisture to the southwest but they likely struggle to make full impact here as our overall dry pattern continues toward the end of the month.

DAYS 1-5 (SEPTEMBER 14-18)

An upper level trough can trigger a few more isolated showers today, but coverage will be isolated and most of the region will be dry most of the day (if hit by one) or all of the day (if not hit by one) – so not a bad day at all other than having to pay attention to the clouds and/or radar if outside. Generally fair weather dominates much of the time Monday to Thursday with high pressure in control, except Wednesday when low pressure passing by to our southeast will likely cause considerable cloud cover and at least a chance of a little rainfall making it to the South Coast. Will watch it.

TODAY: Sun / cloud mix. Isolated to scattered showers and a slight chance of thunderstorms in the afternoon, favoring areas south of MA/NH border. Highs 72-79. Wind variable 5-15 MPH.

TONIGHT: Clearing. Lows 48-55. Wind W up to 10 MPH.

MONDAY: Mostly sunny. Highs 68-75. Wind NW up to 10 MPH with coastal area breezes.

MONDAY NIGHT: Mostly clear. Low elevation fog patches. Lows 43-50. Wind calm.

TUESDAY: Mostly sunny. Highs 71-78. Wind variable up to 10 MPH with coastal sea breezes.

TUESDAY NIGHT: Mostly clear. Low elevation fog patches. Lows 43-50. Wind calm.

WEDNESDAY: Clouds increase. Chance of light rain near the South Coast. Highs 67-74. Wind NE 5-15 MPH.

WEDNESDAY NIGHT: Clearing. Low elevation fog patches. Lows 44-51. Wind NE to variable under 10 MPH.

THURSDAY: Mostly sunny. Highs 72-79. Wind variable to SW up to 10 MPH.

DAYS 6-10 (SEPTEMBER 19-23)

A Canadian cold front drops through the region between later September 19, likely with no more than an isolated shower and a notable wind shift. High pressure builds in with fair weather during the September 20-21 weekend, the last of astronomical summer. Autumnal Equinox occurs at 2:19 p.m. EDT September 22, and we welcome autumn early next week with high pressure shifting offshore, a warm up, and maybe a shower chance, but the overall pattern continues to look rather dry.

DAYS 11-15 (SEPTEMBER 24-28)

Overall pattern remains dry and fairly seasonable overall despite some temperature variation.

DAYS 1-5 (SEPTEMBER 13-17)

An upper level trough approaches today and passes through the region Sunday, and will only be responsible for some increase in cloud cover later today while it now appears most shower activity stays north and west of the area with just a few stray late-day showers wandering into mainly Boston’s northwestern suburbs. Sunday, a few pop-up showers and thunderstorms can develop, but would be isolated to at most scattered coverage. Although any that do develop could produce small hail due to the pocket of very cold air aloft, associated with the upper trough. High pressure builds back into the region Monday through Wednesday of next week with more fair and dry weather.

TODAY: Areas of low clouds and fog early morning in some locations. Sunniest through midday then more limited sun later in the day with an isolated shower possible northwest of Boston. Highs 70-77, coolest South Coast. Wind variable to S up to 10 MPH.

TONIGHT: Partly cloudy. Low elevation fog patches possible. Lows 48-55. Wind SW up to 10 MPH.

SUNDAY: Sun / cloud mix. Isolated to scattered showers and a slight chance of thunderstorms in the afternoon, favoring areas south of MA/NH border. Highs 68-75. Wind variable 5-15 MPH.

SUNDAY NIGHT: Clearing. Lows 48-55. Wind W up to 10 MPH.

MONDAY: Mostly sunny. Highs 68-75. Wind NW up to 10 MPH with coastal area breezes.

MONDAY NIGHT: Mostly clear. Low elevation fog patches. Lows 43-50. Wind calm.

TUESDAY: Mostly sunny. Highs 71-78. Wind variable up to 10 MPH with coastal sea breezes.

TUESDAY NIGHT: Mostly clear. Low elevation fog patches. Lows 43-50. Wind calm.

WEDNESDAY: Mostly sunny. Highs 72-79. Wind variable up to 10 MPH with coastal sea breezes.

DAYS 6-10 (SEPTEMBER 18-22)

A Canadian cold front drops through the region between later September 18 and early September 19, renewing Canadian high pressure and more dry weather. Temperatures variable, but not extreme, averaging near normal.

DAYS 11-15 (SEPTEMBER 23-27)

Still no indications of any significant changes to the overall weather pattern heading into late month.

DAYS 1-5 (SEPTEMBER 12-16)

High pressure from Canada delivers a cooler air mass today with more dry weather. There’s a slight change to the weekend’s forecast with a faster timing of the approaching and passing trough of low pressure, which guidance has had a lot of trouble handling it seems. Once upon a time much guidance had this feature sauntering in Sunday night and hanging around the first half of next week. Guidance consensus now has shifted to a trough that impacts our region with a shower chance later Saturday (mainly inland / west of Boston) and again Sunday, mainly from the I-90 belt southward. Consensus at this point leads me (hopefully accurately) to lean toward this scenario, which will mean I add a late-day shower threat to the forecast Saturday and shift Sunday’s shower threat focus a bit south, but still include the chance for some small hail to occur due to the cold pool of air aloft. All in all though, not a bad weekend ahead. High pressure builds back in with fair weather early next week.

TODAY: Mostly sunny. Highs 68-75. Wind N to NE up to 10 MPH.

TONIGHT: Mostly clear. Fog patches possible in low elevation locations. Lows 43-50. Wind variable under 10 MPH.

SATURDAY: Mostly sunny through early afternoon then a sun/cloud mix. Isolated to showers possible mainly west of I-95 late in the day. Highs 68-75, coolest in coastal areas. Wind variable up to 10 MPH with coastal sea breezes.

SATURDAY NIGHT: Partly cloudy. Low elevation fog patches possible. Lows 45-52. Wind SW up to 10 MPH.

SUNDAY: Sun / cloud mix. Isolated to scattered showers and a slight chance of thunderstorms in the mid to late afternoon. Highs 68-75. Wind variable 5-15 MPH.

SUNDAY NIGHT: Clearing. Lows 48-55. Wind W up to 10 MPH.

MONDAY: Mostly sunny. Highs 68-75. Wind NW up to 10 MPH with coastal area breezes.

MONDAY NIGHT: Mostly clear. Low elevation fog patches. Lows 43-50. Wind calm.

TUESDAY: Mostly sunny. Highs 71-78. Wind variable up to 10 MPH with coastal sea breezes.

DAYS 6-10 (SEPTEMBER 17-21)

Overall pattern is dry with minor systems passing by in a northwesterly air flow making for variable temperatures, which average out close to normal.

DAYS 11-15 (SEPTEMBER 22-26)

Still no indications of any significant changes to the overall weather pattern heading into late month.

DAYS 1-5 (SEPTEMBER 11-15)

The basically “non-event” low pressure passage yesterday leaves behind only some lingering clouds this morning on Cape Cod with a northeasterly air flow, otherwise high pressure builds in with a fair and warmer day. Tonight, a dry cold frontal passage takes place, with some clouds only. Canadian high pressure brings fair and cooler weather Friday-Saturday. Upper level low pressure drifts in from the northwest Sunday into Monday, bringing some unsettled weather – lots of clouds and a chance of convective showers. If the system arrives quickly enough Sunday and/or hangs around long enough Monday, the aid of solar heating can help some of those showers build enough to become thunderstorms and produce small hail. The details of that system are still a little uncertain but will come into focus.

TODAY: Morning clouds Cape Cod, otherwise sunshine dominates. Highs 68-75 coast, 75-82 inland. Wind NW up to 10 MPH with coastal sea breezes.

TONIGHT: Partly cloudy. Fog patches possible in low elevation locations. Wind variable to N up to 10 MPH.

FRIDAY: Mostly sunny. Highs 68-75. Wind N to NE up to 10 MPH.

FRIDAY NIGHT: Mostly clear. Fog patches possible in low elevation locations. Lows 43-50. Wind variable under 10 MPH.

SATURDAY: Mostly sunny. Highs 68-75, coolest in coastal areas. Wind variable up to 10 MPH with coastal sea breezes.

SATURDAY NIGHT: Mostly clear. Fog patches in low elevations once again. Lows 42-49. Wind variable under 10 MPH.

SUNDAY: Sunny start, then clouds arrive / develop. Isolated to scattered showers and a slight chance of thunderstorms in the mid to late afternoon. Highs 68-75. Wind variable 5-15 MPH.

SUNDAY NIGHT: Variably cloudy. A chance of showers. Highs 52-59. Wind variable up to 10 MPH.

MONDAY: Variably cloudy. Isolated to scattered showers until mid afternoon. Highs 67-74. Wind variable 5-15 MPH.

DAYS 6-10 (SEPTEMBER 16-20)

A quiet battle between high pressure nearby (mainly just to north) and low pressure to the south takes place, but we’ll likely be on the fair weather side through the middle of next week. Watching to the northwest for another front to pass through late week, with perhaps the chance of a shower then. Temperatures start cool, then moderate somewhat overall, but the pattern is the type that produces chilly overnight lows and milder daytime highs.

DAYS 11-15 (SEPTEMBER 21-25)

No big changes to the outlook here. Overall pattern looks drier over wet. Temperatures can be variable with a couple fronts passing by, but overall not too far from normal for the period.

DAYS 1-5 (SEPTEMBER 10-14)

Offshore low pressure blankets our region with clouds today, but only delivers very limited wet weather. Most of the rain will fall on Nantucket and Outer Cape Cod, with just a few waves of dissipating showers trying to get further west and north, but mostly unsuccessfully. There can also be a few patches of drizzle from some lower level moisture with an onshore flow. The low pulls away tonight and a clearing trend begins, and other than some lingering clouds in eastern areas early Thursday, our bright September weather returns, with a nice response by our temperature with the return of sun and a ridge of high pressure sitting atop our region. Friday, a cold front slides across the area cooling us back down again, but with continued fair weather, which lasts into the weekend. However, later in the weekend we see more clouds in responsible to the approach of an upper level low pressure system, and it may present our next shower threat as early as the end of the day or evening on Sunday if timing is quick enough.

TODAY: Cloudy. Periods of light rain most likely South Coast / Cape Cod and less likely but still possible elsewhere, along with drizzle patches. Highs 63-70. Wind E to NE 5-15 MPH except 15-25 MPH Outer Cape Cod.

TONIGHT: Cloudy south and east with a little light rain or drizzle early, and breaking/thinning clouds to the west and north. Patchy fog. Lows 46-53. Wind NE to N 5-15 MPH Cape Cod, under 10 MPH elsewhere.

THURSDAY: Early clouds linger in eastern area, otherwise mostly sunny. Highs 74-81 but a little cooler some coastal areas. Wind N up to 10 MPH but some coastal sea breezes.

THURSDAY NIGHT: Mostly clear. Fog patches possible in low elevation locations. Wind variable under 10 MPH.

FRIDAY: Mostly sunny. Highs 68-75. Wind NW up to 10 MPH.

FRIDAY NIGHT: Mostly clear. Fog patches possible in low elevation locations. Lows 43-50. Wind variable under 10 MPH.

SATURDAY: Mostly sunny. Highs 68-75, coolest in coastal areas. Wind variable up to 10 MPH with coastal sea breezes.

SATURDAY NIGHT: Mostly clear. Fog patches in low elevations once again. Lows 42-49. Wind variable under 10 MPH.

SUNDAY: Sunny morning. Some clouds arrive in the afternoon. Potential for showers evening or night. Highs 67-74. Wind variable 5-15 MPH.

DAYS 6-10 (SEPTEMBER 15-19)

Upper level low pressure brings the chance of some unsettled weather to start next week before we see fair weather return. Temperatures below normal to start, recovering to near to above normal as the week goes on.

DAYS 11-15 (SEPTEMBER 20-24)

The overall pattern continues to look on the dry side with high pressure in general control. A couple fronts from Canada add to an up and down temperature regime. Any shower activity with frontal passages should be brief.

DAYS 1-5 (SEPTEMBER 9-13)

An area of high pressure to our north provides fair, pleasant weather today. Low pressure passing to the southeast of New England will influence our weather for about 36 hours starting this evening, ending early Thursday. The sequence of events associated with the passage of the low will be… High to mid level cloudiness increases from south to north this evening through Wednesday’s early morning hours; lower stratus clouds join in from the east and northeast, but not until the low level moisture is abundant enough, which happens from southeast to northwest, starting with Cape Cod; While most rain stays offshore from the system, patches of light rainfall become more likely near the South Coast, especially over Cape Cod, with sprinkles of lighter rain expanding northward across our region, while patches of drizzle associated with the lower clouds can also occur; Drier air begins its return Wednesday night, first pushing the lower clouds and drizzle patches out of the area from north to south, after which we see a retreat of the middle and high cloud deck from west to east while it continues to slide northeastward as a whole on the back side of departing low pressure – at most delaying the ability to see the sunrise on Thursday. High pressure returns to control during Thursday and works together with a ridge of high pressure aloft to make this the warmest day of this week. After this, a cold front with an uneventful passage (few clouds, no rain), will return cooler weather to our region late this week as another Canadian high pressure builds toward the region, but stays centered to the north with a north to northeast air flow here.

TODAY: Abundant sun except temporary high cloudiness filtering the sun southeastern MA this morning, then high clouds start to increase from the south late. Highs 67-74. Wind N to NE up to 10 MPH.

TONIGHT: Clouds increase and thicken. Light rain near Cape Cod by dawn. Lows 45-52 except 53-60 Cape Cod. Wind NE to E up to 10 MPH.

WEDNESDAY: Cloudy. Periods of light rain most likely South Coast / Cape Cod and less likely but still possible elsewhere, along with drizzle patches. Highs 63-70. Wind E to NE 5-15 MPH except 15-25 MPH Outer Cape Cod.

WEDNESDAY NIGHT: Cloudy evening with patchy light rain and drizzle, favoring southern and eastern areas of MA, eastern CT as well as RI. Breaking clouds overnight with a clearing trend from west to east. Patchy fog. Lows 46-53. Wind NE to N 5-15 MPH Cape Cod, under 10 MPH elsewhere.

THURSDAY: Early clouds linger in eastern area, otherwise mostly sunny. Highs 74-81 but a little cooler some coastal areas. Wind N up to 10 MPH but some coastal sea breezes.

THURSDAY NIGHT: Mostly clear. Fog patches possible in low elevation locations. Wind variable under 10 MPH.

FRIDAY: Mostly sunny. Highs 68-75. Wind NW up to 10 MPH.

FRIDAY NIGHT: Mostly clear. Fog patches possible in low elevation locations. Lows 43-50. Wind variable under 10 MPH.

SATURDAY: Mostly sunny. Highs 68-75, coolest in coastal areas. Wind variable up to 10 MPH with coastal sea breezes.

DAYS 6-10 (SEPTEMBER 14-18)

High pressure dominates the weather with dry conditions expected for the September 13-14 weekend. We watch another area of low pressure to the south the first half of next week, but for now it appears high pressure will hold strong enough to keep it offshore. Temperatures near to below normal.

DAYS 11-15 (SEPTEMBER 19-23)

As we through the final few days of summer to the start of autumn (equinox at 2:19 p.m. EDT on September 22), the overall pattern is drier and looks a bit warmer, but still with a cooler shot or two of air from Canada.

DAYS 1-5 (SEPTEMBER 8-12)

High pressure dominates our weather with cool and dry conditions early this week. Low pressure passing offshore to our southeast Wednesday throws a shield of clouds into our sky, but most of its rain stays out over the ocean – may just brush the Islands and Cape Cod for a few hours during that day. Another high pressure area builds in for the balance of the work week with more fair weather.

TODAY: Filtered sun becomes brighter from west to east during the day. Scattered fair weather clouds this afternoon. Highs 67-74. Wind NW 5-15 MPH.

TONIGHT: Mostly clear. Fog patches in some low elevation locations. Lows 45-52. Wind NW under 10 MPH.,

TUESDAY: Mostly sunny. Highs 67-74. Wind N to NE up to 10 MPH.

TUESDAY NIGHT: Partly cloudy. Lows 48-55. Wind NE to E under 10 MPH.

WEDNESDAY: Mostly cloudy. Slight chance of a period of light rain Cape Cod / Islands. Highs 66-73. Wind E up to 10 MPH.

WEDNESDAY NIGHT: Clearing. Lows 46-53. Wind N up to 10 MPH.

THURSDAY: Mostly sunny. Highs 70-77. Wind NW 5-15 MPH.

THURSDAY NIGHT: Mostly clear. Fog patches possible in low elevation locations. Wind variable under 10 MPH.

FRIDAY: Mostly sunny. Highs 68-75. Wind variable up to 10 MPH.

DAYS 6-10 (SEPTEMBER 13-17)

High pressure dominates the weather with dry conditions expected for the September 13-14 weekend. We watch another area of low pressure to the south the first half of next week, but for now it appears high pressure will hold strong enough to keep us dry. Temperatures near to below normal.

DAYS 11-15 (SEPTEMBER 18-22)

As we move through the final days of astronomical summer and up to the Autumnal Equinox (September 22 at 2:19 p.m. EDT), the pattern still looks dry overall, but we’ll watch for low pressure hanging out to our south for at least a portion of this period in case it ends up wandering further north.

DAYS 1-5 (SEPTEMBER 7-11)

The cold front that moved in with its thunderstorms late yesterday for most of the region has paused to allow a wave of low pressure to deliver us some beneficial rainfall in the region today. Cape Cod, which missed out on the storms, is just getting into the rain this morning, which will show an end trend from west to east as we reach midday and early afternoon (except later afternoon Cape Cod), and a clearing trend will follow that, with areas mainly west of Boston potentially seeing the sun before is sets this evening. While today is much cooler than yesterday, it’s still relatively humid with the ongoing rainfall, but much drier air will flow into the region tonight. High pressure will dominate with pleasant, dry weather Monday-Tuesday. Still watching that offshore low to throw clouds into the region Wednesday, but still at this point I expect the rain from it to stay off the coast. Thursday, another high builds in with more dry weather and sunshine.

TODAY: Overcast with rain and areas of fog through midday, except arriving on Cape Cod this morning, then ending from west to east midday / early afternoon except lingering Cape Cod until later afternoon. Thinning / breaking clouds from the west late day with sun possible I-95 belt west before sunset. Highs 65-72. Wind variable up to 10 MPH.

TONIGHT: Clearing. Lows 48-55. Wind NW 5-15 MPH.

MONDAY: Sunny to partly cloudy. Highs 67-74. Wind NW 5-15 MPH.

MONDAY NIGHT: Mostly clear. Lows 45-52. Wind NW under 10 MPH.,

TUESDAY: Mostly sunny. Highs 67-74. Wind N to NE up to 10 MPH.

TUESDAY NIGHT: Partly cloudy. Lows 48-55. Wind NE to E under 10 MPH.

WEDNESDAY: Mostly cloudy. Highs 66-73. Wind E up to 10 MPH.

WEDNESDAY NIGHT: Clearing. Lows 46-53. Wind N up to 10 MPH.

THURSDAY: Mostly sunny. Highs 68-75. Wind NW 5-15 MPH.

DAYS 6-10 (SEPTEMBER 12-16)

High pressure dominates the weather with dry conditions expected. Temperatures near to below normal.

DAYS 11-15 (SEPTEMBER 17-21)

Continued indications for a dry overall pattern with temperatures near to below normal in the final days of astronomical summer.

DAYS 1-5 (SEPTEMBER 6-10)

A hazy look to the morning sun today is due to a wildfire smoke plume aloft that moved in last evening but will be pushed off to the east during the day. Mid summer warmth and humidity dominates today’s weather with offshore high pressure, but an approaching cold front and one of the better set-ups for thunderstorms of the summer, coming quite late in the season, will have us on the look-out for strong to severe storms later in the day. We’ll first need to watch for the development of individual storms ahead of what will eventually be a cluster / line of storms. These first individual cells, if they occur, have the ability to become super-cells, and those can produce larger hail, strong winds, including isolated tornadoes. I don’t say this in the thought process that everybody will see this today. Their occurrence will be isolated, but better to be prepared for the potential in case you happen to be in one of the locations hit by one. Whether or not these occur, there’s a higher likelihood for the aforementioned cluster or line of storms to develop and charge eastward late in the day to the very early evening. Potentials with this include damaging wind gusts and also some hail. Any storms can produce torrential rainfall and dangerous lightning, of course. Many outdoor plans happen on this particular day (Hampton Beach Seafood Festival, an air show in Portsmouth NH, numerous other things). It’ll be important to keep a close eye on the weather for any of these that coincide with the time(s) of storm threats – follow radar, watch the sky, monitor any statements from NWS. The thunderstorm activity is likely to be most powerful north and west of Boston and show a weakening trend as it approaches the coastal plain more due to the later timing of arrival there and the loss of solar support, but a couple stronger cells can always survive further south and east, so people in those areas should also be weather-aware into the evening. Once that threat is by us, the cold front responsible is not going to be in much of a hurry to get through the region, and its slow movement allows additional moisture and a weak wave of low pressure to come up from the south and keep our showery weather going into Sunday. I’m still expecting that most of this activity will take place through Sunday midday and we’ll see a drying trend follow that, and clearing at night. Additionally, the warmth and humidity of today will be replaced by significantly cooler air and a more gradual dry-out, held up by the showers. High pressure from Canada delivers pleasant, cooler and dry weather early next week. By Wednesday, a shield of clouds from low pressure passing offshore will likely limit the sun, and the South Coast may be close to some of that rain, but my early idea is that it will stay offshore.

TODAY: Hazy sun then eventually a sun/cloud mix. Isolated thunderstorms possible by mid afternoon. More widespread showers and thunderstorms likely, especially north and west of Boston, later in the afternoon, progressing eastward into evening. Any storms can be strong to severe. Highs 81-88 except 73-80 South Coast. Dew point rises toward 70. Wind SW 5-15 MPH, higher gusts, and can be variable with powerful gusts near storms.

TONIGHT: Variably cloudy. Occasional showers / chance of a thunderstorm. Patchy fog overnight. Lows 63-70. Dew point 60+. Wind SW 5-15 MPH.

SUNDAY: Mostly cloudy. Occasional showers, favoring morning and midday. Highs 67-74. Dew point falls toward 60. Wind variable to NW up to 10 MPH.

SUNDAY NIGHT: Clearing. Lows 48-55. Wind NW 5-15 MPH.

MONDAY: Sunny to partly cloudy. Highs 67-74. Wind NW 5-15 MPH.

MONDAY NIGHT: Mostly clear. Lows 45-52. Wind NW under 10 MPH.,

TUESDAY: Mostly sunny. Highs 67-74. Wind NW to N up to 10 MPH.

TUESDAY NIGHT: Partly cloudy. Lows 48-55. Wind NE under 10 MPH.

WEDNESDAY: Mostly cloudy. Highs 66-73. Wind E up to 10 MPH.

DAYS 6-10 (SEPTEMBER 11-15)

High pressure dominates the weather with dry conditions expected. Temperatures near to below normal.

DAYS 11-15 (SEPTEMBER 16-20)

There has been a trend on medium range guidance, not surprisingly, for a continued dry look and dominant high pressure in the waning days of astronomical summer, and my outlook continues to lean dry with near to below normal temperatures for this period.

DAYS 1-5 (SEPTEMBER 5-9)

A warm front crossing the region pushed a band of rain through in the pre-dawn hours from west to east which has now moved offshore, opening the door for a sun / cloud mix, trending to more sun, very warm, more humid weather today, then a mild and muggy night and more warmth and higher humidity Saturday. We’ll have an active breeze during much of this time which will cut down on some of the impact of the warmth and humidity, which will be quite noticeable since it’s been an infrequent occurence of late. The “weather” we watch for Saturday is the potential for showers and thunderstorms, which likely develop in 1 or clusters / lines to our west in the afternoon then move into our region late day / evening. This part of the forecast will have to be fine-tuned on the next update and then basically now casted during its occurrence. The idea right now is that strong to locally severe storms are possible mainly west of I-95 late in the day Saturday, with activity waning as it approaches the coastal areas east of I-95. Either way, keep a close eye on things if you have outdoor or travel plans. Sunday’s forecast has trended more “unfair” with time, and that continues today with the expectation that the cold front responsible for Saturday’s storm threat will be quite slow to clear the coastline, and a weak wave of low pressure will bring additional shower chances into at least part of Sunday, favoring eastern areas and the morning hours as it stands now. On the plus side, any rain we get is beneficial as we’ve been quite dry with a tendency for abnormally dry and drought conditions to expand in the area. Even if showers are short-lived, cloudiness can linger longer, and it may not be until later in the day that we start to see a genuine clearing trend develop from the west. One thing is for sure, Sunday will be notably cooler than Saturday, with an eventual trend toward lower humidity – that trend delayed by the potential for rainfall, of course, with the slower-moving front. High pressure builds in with cooler, dry weather early next week.

TODAY: Cloud / sun mix with a trend to more sun. Highs 80-87 except 70s South Coast. Dew point in 60s. Wind SW 5-15 MPH.

TONIGHT: Partly cloudy. Patchy fog. Lows 62-69. Dew point 60+. Wind S to SW up to 10 MPH.

SATURDAY: Sun/cloud mix. A possible late-day shower or thunderstorm favoring areas north and west of Boston. Highs 81-88, except cooler South Coast. Dew point approaching 70. Wind SW 5-15 MPH.

SATURDAY NIGHT: Variably cloudy. An evening shower or thunderstorm possible. Additional showers and areas of fog develop overnight. Lows 63-70. Dew point 60+. Wind SW 5-15 MPH.

SUNDAY: Mostly cloudy. Occasional showers, favoring morning and midday. Highs 67-74. Dew point falls toward 60. Wind variable to NW up to 10 MPH.

SUNDAY NIGHT: Clearing. Lows 48-55. Wind NW 5-15 MPH.

MONDAY: Sunny to partly cloudy. Highs 67-74. Wind NW 5-15 MPH.

MONDAY NIGHT: Mostly clear. Lows 45-52. Wind NW under 10 MPH.,

TUESDAY: Mostly sunny. Highs 67-74. Wind NW to N up to 10 MPH.

DAYS 6-10 (SEPTEMBER 10-14)

High pressure dominates with a long stretch of dry weather expected. Temperature start out a little below normal then moderate somewhat. This pattern favors large temperature diurnals with cool nights / mild days.

DAYS 11-15 (SEPTEMBER 15-19)

Continued hints of a warm / humid air (south) and cool / dry air (north) battle ground, but I’m skeptical at how much resultant rainfall we see. Continuing to lean drier over wetter with temps near to below normal.

DAYS 1-5 (SEPTEMBER 4-8)

High pressure will be off the Atlantic Coast into the weekend and will deliver warmer and more humid air to our region. The approach of a low pressure trough from the west occurs late week into the weekend, bringing some unsettled weather, though limited chances for rainfall, which we need. Other than some foggy areas early this morning, we’ll enjoy a lot of sun and a few developing clouds today – a very nice late summer day. Tonight, clouds move in from the west as a warm front moves into the region, bringing a few pre-dawn showers Friday. This will introduce the warmer, more humid air mass that will persist through Saturday, ahead of a cold front. The indications are that this frontal boundary will be a little slower arriving, allowing us to get through most of the daylight hours without a shower threat Saturday. We will watch for the development of at least a broken line of showers and possible thunderstorms later that afternoon which may make a run at areas at least north and west of Boston. There have been some hints on guidance that this area may not make it all the way into the Boston area / coastal areas, and may dissipate before doing so with the best support lifting into northern New England. The front itself would then cross the region late Saturday night into early Sunday morning at which time we could see a couple rounds of showers. While any shower threat should remove itself fairly early Sunday, we may see a lot of clouds linger during that day as upper winds fairly parallel to the slow-moving departing front slow down the clearing process. It will trend drier and be cooler Sunday than Saturday will be. High pressure builds toward our region Monday with fair, cool, dry weather.

TODAY: Fog patches early, otherwise sun and a few clouds. Highs 75-82, coolest South Coast. Wind S up to 10 MPH.

TONIGHT: Clouds arrive. An overnight shower possible. Patchy fog again. Lows 60-67. Dew point rises to 60+. Wind S to SW up to 10 MPH.

FRIDAY: Sun/cloud mix. Slight chance of a passing shower or thunderstorm. Highs 80-87 except 70s South Coast. Dew point in 60s. Wind SW 5-15 MPH.

FRIDAY NIGHT: Partly cloudy. Patchy fog. Lows 62-69. Dew point 60+. Wind S to SW up to 10 MPH.

SATURDAY: Sun/cloud mix. A possible late-day shower or thunderstorm favoring areas north and west of Boston. Highs 81-88, except cooler South Coast. Dew point in 60s. Wind SW 5-15 MPH.

SATURDAY NIGHT: Variably cloudy. Showers and possibly a thunderstorm mainly overnight. Patchy fog overnight. Lows 63-70. Dew point 60+. Wind SW 5-15 MPH.

SUNDAY: Variably cloudy. A shower possible early, favoring eastern areas. Highs 70-77. Dew point falls below 60. Wind NW 5-15 MPH.

SUNDAY NIGHT: Clearing. Lows 48-55. Wind NW 5-15 MPH.

MONDAY: Sunny to partly cloudy. Highs 67-74. Wind NW 5-15 MPH.

DAYS 6-10 (SEPTEMBER 9-13)

High pressure dominates with a long stretch of dry weather expected. Temperature start out a little below normal then moderate somewhat. This pattern favors large temperature diurnals with cool nights / mild days.

DAYS 11-15 (SEPTEMBER 14-18)

There are a few hints that some battle between warm/humid air to our south and cool/dry air to our north can occur in our region with better rainfall chances a time or two during this stretch, but I’m skeptical at this point, and lean toward drier over wetter, but will continue to monitor trends.

DAYS 1-5 (SEPTEMBER 3-7)

High pressure over the region early today slides offshore during the next 24 hours and sits there for a couple days after that, while a weak upper low over our area pulls out of the region today. Meanwhile a broad trough of low pressure will approach the Northeast from the west late this week, crossing the region this weekend. This is the large scale picture. What does that mean for our day to day weather? It translates to today being similar to yesterday with lots of sun and pleasant feeling air, a touch warmer than yesterday for some areas but still manageable humidity levels. Those humidity levels bump up a bit more, along with the temperature, on Thursday. A cold front will approach the region in the evening bringing more clouds in but this front will be dissipating as it loses support and may only cause a passing shower in the pre-dawn hours of Friday. That day itself will be even warmer with even higher humidity, and there can be a passing shower or t-storm in a few locations, but most of the day will be rain-free, and many areas will see nothing at all. The warmth and humidity continue elevated into the start of the weekend, with Saturday being another such day. A stronger cold front will cross the region, but this may not happen until sometime Saturday night or even early Sunday morning as the trend for this to occur has been with slower timing. That front will bring our best shot at showers and a few thunderstorms in the region, but it may be only for a relatively short period of time and not particularly beneficial as we continue to see our region having an increased need for rain after a dry summer. What the front will do is deliver cooler, less humid air by the end of the weekend, though clouds may be stubborn to completely let go of our region on Sunday, so I can’t forecast a completely sunny day at this point.

TODAY: Mostly sunny to partly cloudy. Highs 74-81, coolest along the coast. Wind variable under 10 MPH becoming SE to S up to 10 MPH.

TONIGHT: Mostly clear to partly cloudy. Patchy fog. Lows 55-62. Wind S up to 10 MPH.

THURSDAY: Partly sunny. Highs 75-82, coolest South Coast. Wind S 5-15 MPH.

THURSDAY NIGHT: Mostly cloudy. A passing shower possible overnight. Patchy fog. Lows 58-65. Wind S 5-15 MPH.

FRIDAY: Partly sunny. Slight chance of a passing shower or thunderstorm. Highs 80-87 except 70s South Coast. Dew point in 60s. Wind S 5-15 MPH.

FRIDAY NIGHT: Partly cloudy. Patchy fog. Lows 62-69. Dew point 60+. Wind S to SW up to 10 MPH.

SATURDAY: Sun/cloud mix. Highs 81-88, except cooler South Coast. Dew point in 60s. Wind SW 5-15 MPH.

SATURDAY NIGHT: Variably cloudy. Showers and possibly a thunderstorm mainly overnight. Patchy fog overnight. Lows 63-70. Dew point 60+. Wind SW 5-15 MPH.

SUNDAY: Variably cloudy. A shower possible early, favoring eastern areas. Highs 70-77. Dew point falls below 60. Wind NW 5-15 MPH.

DAYS 6-10 (SEPTEMBER 8-12)

Canadian high pressure builds in with fair, cool weather early next week, then sinks slowly southward with continued fair weather with still-cool nights but warmer afternoons mid to late week.

DAYS 11-15 (SEPTEMBER 13-17)

At mid month we watch a battle between renewed Canadian high pressure from the north and a frontal boundary with areas of low pressure to the south. Leaning toward domination by the former, with a dry pattern persisting here with near to below normal temperatures. This does not mean we cannot get a period of warmer, more humid weather including shower chances. Will monitor trends.