3:05AM

High pressure aloft and a west northwest wind at the surface will be the perfect setup for record heat today, along with significant humidity, though it may become slightly drier than yesterday. It should be mainly dry though a few  isolated air mass thunderstorms cannot be ruled out, especially in southern NH to northeastern MA in the evening or night.

Friday, a cold front will approach from the west, but it will still be hot and humid during the day. Thunderstorms will develop during the day as this front pushes into the hot and humid air mass. The coverage and strength of the storms is not completely known, but there will be the potential for strong to possibly severe storms in some locations. The storm threat will continue for at least part of Friday night.

Saturday, the front will have pushed through but be just offshore, with lingering clouds for at least the first half of the day, and still the threat of a few more showers and thunderstorms (though do not look for them to be widespread). The air will be somewhat cooler.

Sunday, a sliver of high pressure will provide a dry and comfortably mild to warm day, the pick of the weekend.

The first half of next week will be somewhat unsettled and cooler as upper level low pressure dominates the weather.

Forecast for eastern MA, southern NH, and RI…

TODAY: Mostly sunny. Humid. Record heat. Highs middle 80s to lower 90s Cape Cod and Islands, middle 90s to around 100 elsewhere. Wind WNW 10-15 MPH.

TONIGHT: Mostly clear to partly cloudy. Slight chance of isolated thunderstorms especially southern NH to northeastern MA. Very warm and muggy. Low in the 70s. Wind W up to 10 MPH.

FRIDAY: Partly sunny and hazy. Scattered showers and thunderstorms. Highs from the middle 80s to lower  90s. Wind SW 10-20 MPH.

FRIDAY NIGHT: Partly cloudy. Scattered showers and thunderstorms. Warm and humid. Lows 65-70. Wind SW 5-15 MPH shifting to WNW.

SATURDAY: Mostly cloudy in the morning. Partly sunny in the afternoon. Slight chance of showers. Highs from the middle 70s to lower 80s. Wind variable 5-15 MPH.

SUNDAY: Mostly sunny. Low 61. High 81.

MONDAY: Cloudy. PM showers. Low 58. High 75.

TUESDAY: Variably cloudy. Scattered showers. Low 55. High 70.

WEDNESDAY: Partly sunny. Isolated showers. Low 55. High 70.

2:37AM

Forecast for eastern MA, southern NH, and RI…

TODAY: Mostly sunny. Highs in the 90s except 80s Cape Cod & Islands. Wind W 5-15 MPH.

TONIGHT: Partly cloudy. Lows from the middle 60s to lower 70s. Wind NW under 10 MPH.

THURSDAY: Mostly sunny. Highs in the 90s, again 80s Cape Cod & Islands. Wind W 10-20 MPH.

THURSDAY NIGHT: Partly cloudy. Isolated showers and thunderstorms late. Lows around 70. Wind WSW 5-15 MPH.

FRIDAY: Partly sunny with scattered showers and thunderstorms through early afternoon. Mostly sunny mid afternoon on. Highs 85-90. Wind SW 10-15 MPH shifting to WNW.

SATURDAY: Partly sunny. Low 63. High 77.

SUNDAY: Mostly sunny. Low 61. High 80.

MONDAY: Cloudy. Chance of showers. Low 64. High 76.

TUESDAY: Partly cloudy. Chance of showers. Low 61. High 74.

5:55PM

The marine layer’s time is running out here in eastern MA and nearby areas. During the next 24 hours, a southwesterly flow will overtake the area, marking the beginning of a several-day bout of summer weather, if you include tomorrow, the transition day. A few areas have a shot at an official heat wave (3 or more days of 90+ high temps) Wednesday through Friday, if they manage to eek out a 90 on  Friday.  The timing of a cold front that will end the heat blast is still in question: Early Friday? Later Friday? Trying to pin that down but for now am going to go with the earlier timing still….

The weekend? Far away still, but early indications are for cooler (but not too chilly) behind the cold front, and mainly dry. We may have to deal with a disturbance causing some showers  by the end of the weekend, but this may just as easily hold off til the start of next week.

Forecast for eastern MA, RI, and southern NH…

TONIGHT: Low clouds return. Patchy fog forms. Lows in the 50s, coolest inland valleys. Wind SE under 10 MPH shifting to SW.

TUESDAY: Any low clouds and patchy fog vanishing by mid morning then sunshine. Highs from the upper 70s to lower 80s. Wind SW 5-15 MPH.

TUESDAY NIGHT: Clear early then areas of low clouds and patchy fog forming again. Lows in the 60s, coolest inland valleys. Wind SW 5-15 MPH.

WEDNESDAY: Mostly sunny. Highs from the upper 80s to middle 90s. Wind WSW 10-15 MPH.

THURSDAY: Mostly sunny to partly cloudy. Low 70. High 95.

FRIDAY: Partly sunny. Scattered thunderstorms. Low 70. High 88.

SATURDAY: Mostly sunny. Low 60. High 80.

SUNDAY: Partly cloudy. Showers at night. Low 60. High 80.

MONDAY: Mostly cloudy. Chance of showers. Low 63. High 76.

10:36PM

High pressure northeast of New England will keep the region marine-air-modified for one more day before slipping off to the south Tuesday through midweek, allowing a southwesterly flow and a building upper level ridge to throw summer into the area, right on schedule! Heat will build especially Wednesday and Thursday, with some record high temperatures being challenged especially Thursday. Thursday night and Friday morning, a cold front will cross the region (going with quicker timing at this point). This will dry the air out and cool it down very slightly on Friday and a little moreso over the weekend as an elongated upper level trough moves into the region.

Updated forecast for the next 7 days for eastern MA, RI, and southern NH…

OVERNIGHT: Areas of low clouds and patchy fog. Low from the upper 40s deep valleys to the middle 50s near the coast. Wind light E.

MONDAY: Areas of low clouds and patchy fog early, giving way to more sun, then some increase in clouds from the west at the end of the day. High from the upper 60s coast to the middle 70s inland. Wind SE 5-15 MPH.

MONDAY NIGHT: Variably cloudy. Low 55-60 inland, 60-65 coast and urban centers. Wind S under 10 MPH.

TUESDAY: Mostly sunny. High 80-85 except 70s some coastal points. Wind SW 5-15 MPH.

WEDNESDAY: Mostly sunny. Low 66. High 88.

THURSDAY: Partly cloudy. Low 68. High 92.

FRIDAY: Early showers/t-storms. Mostly sunny. Low 69. High 87.

SATURDAY: Mostly sunny. Low 61. High 81.

SUNDAY: Partly cloudy. Low 62. High 81.

10:42AM

High pressure centered over the Canadian Maritime Provinces will  provide fair weather this weekend with ocean-modified air. A wind off the ocean into eastern areas is already pushing some low clouds onshore but these will eventually break up and dissipate under the strong June sun into the afternoon. Enough low level moisture will be in place tonight and Sunday morning for low clouds and areas of fog to become more widespread, with this process to be repeated Sunday night and Monday morning. Sun should burn any of this off easily by  midday Sunday, but may have a little more difficulty doing so on Monday if enough high and middle clouds filter the sunshine. This would take place as warm air started to move in aloft.

By Tuesday and through the middle of next week, high pressure will have shifted to a position off the US East Coast, and this will allow a west to southwest flow of much warmer air into New England. I still hesitate to jump all over 90+ temperatures, but the fact we are now in a stretch of mostly sunny and dry weather is rapidly starting to dry out the top soil and will make at least upper 80s and possibly 90 more possible by Wednesday and/or Thursday. Leaning toward Wednesday as the warmest day now as a very weak front may cross the region early Thursday and introduce very slightly cooler air into the region for that day. Timing of course is not certain this far out anyway, and anything midweek is speculation based on guidance at this point.

For now, the forecast for eastern MA, RI, and southeastern NH…

TODAY: Areas of low clouds moving into coastal areas (and several miles inland) through early afternoon with sunshine elsewhere, then sunshine dominating most areas mid to late afternoon. Another area of low clouds reaching some coastal areas by early in the evening. High 65-75 coast to inland, may approach 80 in a few locations far inland. Wind E 5-15 MPH inland and 10-20 MPH coast.

TONIGHT: Low clouds spreading east to west, areas of fog forming. Low 53-58. Wind E under 10 MPH.

SUNDAY: Low clouds and fog burning off by midday then mostly sunny in the afternoon. High 65-75 coast to inland. Wind E 5-15 MPH.

SUNDAY NIGHT: Low clouds & areas of fog return. Low 53-58. Wind E under 10 MPH.

MONDAY: Mostly cloudy to partly sunny. High 68-78 coast to inland. Wind SE 5-15 MPH.

TUESDAY: Mostly sunny. Low 59. High 83.

WEDNESDAY: Mostly sunny to partly cloudy. Low 66. High 88.

THURSDAY: Partly cloudy to mostly sunny. Low 66. High 85.

FRIDAY: Partly sunny. Scattered showers and thunderstorms. Low 68. High 86.

4:06PM

High pressure north of New England will provide dry weather with no heat in sight through the weekend. The only real “interruption” if you want to call it that may be a period of extensive low cloudiness late Saturday night and Sunday morning as some moisture comes in from the Atlantic with an easterly wind.

Next week, high pressure will start shifting more to the south and finally allowing more southwesterly flow to develop. This will result in a warm-up, the first real sign of this likely being less sunshine Monday as warmer air coming in first aloft creates more cloudiness.  I’m not looking for any major heat next week as wetter topsoil and abundant green vegetation will make it hard to heat up too much.

Forecast for eastern MA, RI, and southeastern NH…

THROUGH SUNSET: Clouds depart Nantucket. Mostly sunny elsewhere. Temperatures ranging from the middle 60s to lower 70s coast to inland will fall back slightly. Wind NE-E 10-15 MPH.

TONIGHT THROUGH SATURDAY: Clear nights, sunny days. Lows in the 50s, coolest interior valleys. Highs 65-75, coolest coast. Wind NE-E under 10 MPH at night, up to 15 MPH during the day.

SATURDAY NIGHT: Low clouds developing. Low 50-55. Wind E under 10 MPH.

SUNDAY: Low clouds slowly dissipating during the morning leading to a sunnier afternoon. High 62-67 coast, 67-72 inland. Wind E 10-15 MPH.

MONDAY: Variably cloudy. Low 57. High 74.

TUESDAY: Mostly sunny. Low 58. High 80.

WEDNESDAY: Partly cloudy. Low 61. High 82.

THURSDAY: Mostly sunny. Low 63. High 84.

11:13PM

The last of the drizzle, low clouds, and fog will slip out quietly in the early hours of Thursday morning. Dry weather will follow for days on end as high pressure dominates. The high centered to the north means that an air flow from the north to northeast will keep temperatures in check during the next few days as sunshine dominates. By Monday, more clouds will dominate as warm air starts moving in above the ground first, eventually reaching the surface early next week.

Forecast for eastern MA, RI, and southeastern NH…

OVERNIGHT: Mostly cloudy. Patchy fog. Areas of drizzle. Low 50-55. Wind light NE.

THURSDAY: Clearing north to south during the morning. Mostly sunny in the afternoon. High from the upper 60s coast to middle 70s well inland. Wind NE 5-15 MPH.

THURSDAY NIGHT: Clear. Low from 50 inland valleys to upper 50s coast. Wind NE under 10 MPH.

FRIDAY: Sunny. High from the upper 60s coast to middle 70s well inland. Wind NE 5-15 MPH.

SATURDAY: Mostly sunny. Low 54. High 77.

SUNDAY: Partly cloudy. Low 51. High 70.

MONDAY: Mostly cloudy. Low 55. High 72.

TUESDAY: Partly cloudy. Low 56. High 78.

WEDNESDAY: Mostly sunny. Low 57. High 81.

3:11AM

Low pressure will bring periods of rain to southern New England today. High pressure will build down from the north  Thursday through the coming weekend, with mainly dry weather but a lack of summer heat as the air will be coming from the Maritimes of Canada and also modified at times by the nearby Atlantic waters.

Forecast for eastern MA, southern NH, and RI…

TODAY: Cloudy. Periods of rain and embedded heavier showers, eventually tapering off to more scattered showers and areas of drizzle. High 65-70. Wind S to variable up to 10 MPH.

TONIGHT: Mostly cloudy with a few showers lingering and some areas of fog developing. Low 55-60. Wind variable to N up to 10 MPH.

THURSDAY: Partly to mostly sunny. High 70-75 but upper 60s some coastal areas. Wind N shifting to E up to 10 MPH.

FRIDAY: Mostly sunny. Low 56. High 74.

SATURDAY: Mostly sunny. Low 55. High 77.

SUNDAY: Mostly sunny. Low 57. High 78.

MONDAY: Mostly sunny. Low 57. High 79.

2:46AM

A little reverse on the title of a recent blog, because this time we have wet weather coming in for a relatively short time during midweek before high pressure returns fair weather to the region late in the week. The wet weather will be caused by a slow-moving front that comes in from the west tonight through Wednesday night, lingering into Thursday, with an area of low pressure forming on it to the south, eventually drifting to east with time.

Forecast for eastern MA, southern NH, and RI…

TODAY: Mostly cloudy. High 66-72, coolest coastal areas. Wind S 5-15 MPH.

TONIGHT: Cloudy. Showers after midnight. Low near 60. Wind S 5-15 MPH.

WEDNESDAY: Cloudy. Showers likely. High 65-70. Wind S around 10 MPH.

THURSDAY: Mostly cloudy. Low 57. High 69.

FRIDAY: Partly cloudy. Low 55. High 73.

SATURDAY: Mostly sunny. Low 57. High 77.

SUNDAY: Mostly sunny. Low 58. High 78.

MONDAY: Sunny. Low 60. High 80.

1:38AM

High pressure noses southward across New England today then slides eastward a little on Tuesday, finally retreating northeastward into southeastern Canada as unsettled weather moves in from the south and west at midweek. High pressure regains control late in the week. This outlook is pretty much unchanged from the previous post.

Forecast for the week ahead for eastern MA, RI, and southeastern NH…

TODAY: Partly cloudy. High from the upper 60s coast to upper 70s well inland. Wind SE up to 10 MPH.

TONIGHT: Partly cloudy. Low from the lower 50s inland valleys to near 60 at the coast. Wind S under 10 MPH.

TUESDAY: Partly cloudy. High from near 70 coastal areas to near 80 well inland. Wind S 5-15 MPH.

WEDNESDAY: Mostly cloudy. Showers likely. Low 61. High 69.

THURSDAY: Mostly cloudy. Isolated showers. Low 58. High 71.

FRIDAY: Partly cloudy. Low 56. High 74.

SATURDAY: Mostly sunny. Low 57. High 75.

SUNDAY: Mostly sunny. Low 57. High 75.

4:47PM

The next several days will see a quiet battle of high pressure to the north and low pressure to the south. A weak boundary with a disturbance moving along it has really only been able to produce some clouds across western and southern New England during the day Saturday, but these have battled drier air trying to press in from the north and plenty of sun has been enjoyed in much of the forecast area. This high pressure area will win the battle Sunday through Tuesday, and it will press far enough south so that winds that will be mainly north to east on Sunday will turn more southerly by late Monday and Tuesday. By midweek, low pressure will start to win out for a couple days as a frontal system moves in and provides an avenue to bring some moisture into the region. High pressure will again push the unsettled stuff back to the south at the end of the week.

Updated forecast for eastern MA, southern NH, and RI…

TONIGHT: Variably cloudy. Low ranging from the lower 50s inland valleys to near 60 along the coast and in urban centers. Wind W to NW around 10 MPH.

SUNDAY: Mostly sunny. High from the upper 60s immediate coast to upper 70s well inland. Wind N 5-15 MPH shifting to E.

SUNDAY NIGHT: Mostly clear. Low ranging through the 50s, coolest inland valleys and mildest near the coast. Wind light E to SE.

MONDAY: Sunny. High from 70 immediate coast to 80 well inland. Wind SE 5-15 MPH.

TUESDAY: Mostly sunny. Low 55. High 70 coast to 80 inland.

WEDNESDAY: Partly sunny. Scattered showers/thunderstorms. Low 60. High 75.

THURSDAY: Mostly cloudy. Scattered showers. Low 59. High 73.

FRIDAY: Slow clearing. Low 56. High 75.

SATURDAY: Mostly sunny. Low 58. High 78.

4:44PM

We continue under the influence of low pressure and cold air aloft as more showers and thunderstorms have popped up during the day today. These will fade with the setting sun, only to re-fire tomorrow as the atmosphere continues to be unstable. A pair of weak disturbances will pass across northern New England during the day Saturday then just south of New England Saturday night. At this point, these don’t look like they will have a big impact, perhaps a shower or thunderstorm Saturday night in a few locations. Drier, warmer weather Sunday through early next week will be the result of building high pressure.

Forecast for eastern MA, southern NH, and RI…

TONIGHT: Variably cloudy in the evening with diminishing showers and thunderstorms. Partly cloudy to mostly clear but patchy ground fog forming overnight. Low 50-55. Wind S to SW under 10 MPH.

FRIDAY: Mostly sunny in the morning with any patchy fog dissipating early. Developing clouds leading to scattered showers and thunderstorms in the afternoon. High 70-75, holding in the 60s in a few coastal areas. Wind variable to S up to 10 MPH.

FRIDAY NIGHT: Variably cloudy early with a few lingering showers possible, then partly cloudy. Patchy valley fog. Low 53-58. Wind light SW.

SATURDAY: Partly cloudy. High 75-80. Wind W 10-20 MPH.

SATURDAY NIGHT: Mostly cloudy. Slight chance of showers and thunderstorms. Low 60-65. Wind W 10-15 MPH.

SUNDAY: Mostly sunny. High 73-78. Wind N 10-15 MPH.

MONDAY: Sunny. Low 58. High 70 coast to 80 inland.

TUESDAY: Mostly sunny. Low 61. High 82.

WEDNESDAY: Partly sunny. PM showers and thunderstorms. Low 64. High 83.

THURSDAY: Mostly cloudy. Scattered showers and thunderstorms. Low 66. High 77.

3:51PM

Low pressure will still be in control through Thursday but slight improvement will be showing each day, in the form of less ocean drizzle/showers and more breaks in the clouds. This will allow instability showers and thunderstorms to fire up well inland, however. Once we get by this, it looks like a warmer, drier pattern will take over starting about Friday and lasting into the start of next week.

Forecast for eastern MA, southern NH, and RI…

TONIGHT: Mostly cloudy. Isolated showers and patches of drizzle. Low 48-53. Wind N under 10 MPH.

WEDNESDAY: Mostly cloudy to partly sunny with the greatest chance of sunbreaks well inland. Isolated to scattered showers and patches of drizzle. A slight chance of thunderstorms well inland in the afternoon. High 60-65, upper 50s some coastal areas. Wind N 5-15 MPH shifting to E.

WEDNESDAY NIGHT: Mostly cloudy. Isolated showers early. Low 50-55. Wind light variable.

THURSDAY: Partly sunny. Isolated showers and thunderstorms especially inland during the afternoon. High middle 60s coast to middle 70s far inland. Wind NE-N 5-15 MPH.

FRIDAY: Mostly sunny. Low 56. High 75.

SATURDAY: Partly cloudy. Low 57. High 77.

SUNDAY: Mostly sunny. Low 58. High 79.

MONDAY: Mostly sunny. Low 60. High 81.

TUESDAY: Mostly sunny. Low 62. High 83.

12:00AM

Boston MA and Seattle WA will be twins on opposite coasts Monday, both having a high temperature in the lower to middle 50s with wet weather. Boston’s soaker will be caused by continued influence of broad upper level low pressure and a couple of surface lows (one going out south of New England and another one backing down the coast from Maine and joining the other). In addition, minor to moderate coastal flooding is likely around the times of high tide, especially the Monday night high tide which will be astronomically high. The entire circulation will then sink south and east through midweek, and it will take much of the week to finally work out of its influence. The wettest weather of Monday will ease slightly Tuesday then moreso during the Wednesday-Friday period, but as more and more breaks in the clouds take place that will only set the stage for afternoon showers and thunderstorms to develop over inland locations mid to late week. Looking ahead to the weekend, further improvement and a warm-up should take place.

Forecast for southeastern NH, eastern MA, and RI…

OVERNIGHT: Overcast. Periods of drizzle, areas of fog, and a chance of rain toward dawn. Low 50-55. Wind N-NE 10-15 MPH gusting 20-25 MPH.

MONDAY: Overcast. Rain and drizzle with areas of fog. Temperature steady 50-55. Wind NE 10-20 MPH gusting around 30 MPH.

MONDAY NIGHT: Overcast. Drizzle and areas of fog with periods of rain. Temperature steady 50-55. Wind NE 10-20 MPH with higher gusts.

TUESDAY: Cloudy. Periods of drizzle and light rain. Areas of fog. High 55-60. Wind N 10-20 MPH with higher gusts.

WEDNESDAY: Mostly cloudy. Scattered showers. Low 49. High 65.

THURSDAY: Mostly cloudy. Isolated to scattered showers/t-storms inland. Low 54. High 69.

FRIDAY: Mostly cloudy. Isolated to scattered showers/t-storms inland. Low 56. High 71.

SATURDAY: Mostly cloudy to partly sunny. Low 58. High 73.

SUNDAY: Partly cloudy to mostly sunny. Low 61. High 78.

3:30AM

Upper level low pressure will continue to dominate the Northeast well into next week. But a drier slot of air at the surface will provide a little bit of a break for today after yesterday’s very wet and cool day. Some sunshine today will boost temperatures into the 70s but the air will be unstable enough that some showers and thunderstorms may pop up during the afternoon. This brief break will be short lived, as the entire upper level low will shift southeastward and pull the moisture from today back down across southern New England Monday, which will turn out to be a very wet and chilly day. Improvement after this will be very slow heading through midweek.

Forecast for eastern MA, southeastern NH, and RI… (Update as of 11:25AM)

THIS AFTERNOON: Most sun in RI and adjacent MA but more sun trying to work further north and east into eastern MA and southern NH with time, though lots of clouds and a few patches of drizzle continue in these areas for a time. More clouds returning from the west later and a slight chance of a few showers or even an isolated thunderstorm late day. High 72-77 but 60s Cape Cod and Islands. Wind NW 5-15 MPH with higher gusts.

TONIGHT: Variably cloudy in the evening with isolated showers and thunderstorms. Overcast overnight with rain and drizzle developing. Low 50-55. Wind N 5-15 MPH.

MONDAY: Overcast with rain and drizzle. High 53-58. Wind NE 10-20 MPH with higher gusts.

TUESDAY: Cloudy. Chance of light rain and drizzle. Low 50. High 61.

WEDNESDAY: Mostly cloudy. Chance of showers and drizzle. Low 53. High 66.

THURSDAY: Mostly cloudy. Slight chance of showers. Low 55. High 70.

FRIDAY: Mostly sunny. Low 59. High 74.