Drier Heat Today, Humidity Returns Sunday

8:53AM

You’ll notice a difference today. A hot day, but much drier than yesterday, and with a nice breeze from the west. But humidity will be back Sunday and Monday as we remain on the northeastern edge of a major heatwave and disturbances riding along it play with the “humidity switch”.  By Tuesday, expect to be back into some drier air again, and a little less heat, lasting through midweek and including Independence Day. Disturbances are most likely to cause shower and thunderstorm threats early Sunday morning and during the day Monday, based on current timing.

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

TODAY: Sunshine but filtered to dimmed for a while later morning through early afternoon by a period of high &  middle clouds. Hot but not that humid. Highs from the middle 80s Cape Cod and Islands to upper 80s and lower 90s most places, a few middle 90s interior areas mostly north of the Mass Pike. Wind W 10-15 MPH gusting 20-25 MPH.

TONIGHT: Mostly clear then partly cloudy later. Low 60-65.  Wind W 5-15 MPH.

SUNDAY: Partly to mostly sunny. Isolated to scattered thunderstorms are most likely before 11AM with only a very slight risk of a few isolated thunderstorms late in the day. Hot but more humid. Highs middle 80s (Cape Cod) to around 90 most locations. Wind WSW 5-15 MPH.

MONDAY: Partly sunny and hazy. Scattered showers & thunderstorms. Low 66. High 85.

TUESDAY: Mostly sunny. Low 64. High 83.

WEDNESDAY – INDEPENDENCE DAY: Partly cloudy. Low 64. High 84.

THURSDAY: Mostly sunny. Low 64. High 85.

FRIDAY: Partly cloudy. Low 66. High 89.

Heat Blast

7:23AM

A disturbance passes through from west northwest to east southeast this morning and a second one approaches late today producing only slight chances for showers or thunderstorms, and an even lesser one does the same thing on Sunday. Both today and Sunday will turn out hot and humid, and though it will still be hot on Saturday it will be less humid.

The heat will ease early  next week as the jet stream dips a little to the south, but a disturbance passing by on Monday may set of a few more showers and thunderstorms.

Forecast for eastern MA, southern NH, and RI…

TODAY: Mostly cloudy with isolated to scattered showers and a slight chance of a thunderstorm this morning. Partly to mostly sunny and hazy this afternoon with a very slight chance of a late-day thunderstorm. Turning hot and humid  in the afternoon. High 89-94, cooler Cape Cod & Islands. Wind W 5-15 MPH.

TONIGHT: Partly cloudy. Low 63-68. Wind W 5-10 MPH.

SATURDAY: Mostly sunny. High 90-95. Wind W 10-20 MPH.

SATURDAY NIGHT: Partly cloudy. Isolated thunderstorms late. Low 65-70. Wind W 5-15 MPH.

SUNDAY: Partly cloudy. Isolated thunderstorms. High 85-90. Wind WSW 5-15 MPH.

MONDAY: Partly sunny.  Chance of showers and thunderstorms. Low 66. High 85.

TUESDAY: Mostly sunny. Low 64. High 83.

WEDNESDAY: Partly cloudy. Low 65. High 84.

THURSDAY: Mostly sunny. Low 65. High 85.

Low Lifts Out, Summer Drifts In

2:10AM

Low pressure will move away from New England leaving behind a westerly flow and more summery weather for the next several days. The region will find itself on the edge of a large area of hot weather to the south and west, and the only chance of wet weather will be from a few showers and storms associated with weak disturbances moving through, which will be hard to time.

Forecast for eastern MA, southern NH, and RI…

TODAY: Partly cloudy. High 80-85 except 70s Cape Cod. Wind W 10-20 MPH.

TONIGHT: Partly cloudy. Low 60-65. Wind WSW 5-15 MPH.

FRIDAY: Partly sunny. Isolated to scattered thunderstorms in the afternoon. High 85-90. Wind SW 5-15 MPH.

SATURDAY: Mostly sunny. Low 67. High 89.

SUNDAY: Partly cloudy. Low 68. High 88.

MONDAY: Partly sunny. Isolated thunderstorms. Low 66. High 84.

TUESDAY: Sunny. Low 65. High 83.

WEDNESDAY – INDEPENDENCE DAY: Partly cloudy. Low 65. High 83.

Whirlpooling

3:37PM

Southern New England is under the influence of a whirlpool of low pressure from the surface to the upper atmosphere and this will only slowly pull away during the next few days. As it starts to lift northeastward, a northerly wind flow at the surface will turn more westerly allowing a slow moderating trend in temperature. A chance of showers and thunderstorms will continue, especially during the afternoon hours, due to the instability with the low, through Thursday.

By Friday and the weekend, a more zonal (west to east) flow in the jet stream will allow for a much warmer and mainly fair period of weather, with only a small disturbance causing a risk of a few showers late Friday night into Saturday morning.

Forecast for eastern MA, southern NH, and RI…

THROUGH 6PM: Mostly cloudy with showers and thunderstorms most likely in Essex County and from near Boston through southeastern MA including Cape Cod. Any storms may produce gusty winds, brief downpours, briefly frequent lightning, and small hail. Temperatures ranging from the middle 60s to lower 70s, dropping toward 60 in storms. Wind NW 10-20 MPH.

EVENING (6PM TO SUNSET): Variably cloudy with isolated showers and thunderstorms. Temperatures 60-65. Wind NW 5-15 MPH.

TONIGHT: Variably cloudy with isolated showers ending. Low 55-60. Wind W 5-15 MPH.

WEDNESDAY: Variably cloudy. Scattered showers and thunderstorms in the afternoon. High 72-77. Wind W 10-15 MPH.

WEDNESDAY NIGHT: Variably cloudy. Isolated showers early. Low 57-62. Wind W 5-15 MPH.

THURSDAY: Partly sunny. Isolated showers and thunderstorms during the afternoon. High 77-82. Wind W 5-15 MPH.

FRIDAY: Partly cloudy. Low 62. High 85.

SATURDAY: Partly cloudy. Chance of showers in the morning. Low 66. High 88.

SUNDAY: Mostly sunny. Low 67. High 89.

MONDAY: Partly sunny. Low 68. High 82.

TUESDAY: Mostly sunny. Low 64. High 83.

The Week Ahead

7:18AM

A front crossing the region today will get bogged down as upper level low pressure drops in and spins around for a few days, holding unsettled weather in the area into midweek, similar to the pattern we have seen a few times during this month.

Later this week, this upper low will lift out and a more west to east flow will take over, with a more typical summertime pattern resulting.

Forecast for eastern MA, southern NH, and RI…

TODAY: Mostly cloudy. Showers and thunderstorms developing later this morning and afternoon, some with heavy rain. High 70-75, upper 60s some coastal areas. Wind S up to 10 MPH.

TONIGHT: Cloudy. Showers and thunderstorms likely before midnight, less numerous after midnight. Low 58-63. Wind variable up to 10 MPH.

TUESDAY: Mostly cloudy. Periods of drizzle and showers. High 65-70. Wind N 5-15 MPH.

WEDNESDAY: Variably cloudy. Scattered showers. Low 58. High 72.

THURSDAY: Partly sunny. Isolated showers. Low 59. High 77.

FRIDAY: Partly cloudy. PM thunderstorms. Low 62. High 83.

SATURDAY: Partly cloudy. Low 66. High 88.

SUNDAY: Mostly sunny. Low 65. High 87.

Sunday AM Forecast Update

9:14AM

Updated forecast for eastern MA, southern NH, and RI. This will reflect a slightly more pessimistic view of the weather for the first half of the coming week but a nice turn again toward the end. Full discussion and forecast this evening!

TODAY: Sunny to partly cloudy. High 80-85 except 70s some coastal areas. Wind NW-W 5-15 MPH.

TONIGHT: Partly to mostly cloudy. Low 60-65. Wind W-SW 5-15 MPH.

MONDAY: Cloudy. Showers/thunderstorms likely. High 69-74. Wind SW-S 5-15 MPH.

TUESDAY: Mostly cloudy. Numerous showers. Low 62. High 73.

WEDNESDAY: Variably cloudy. Scattered showers. Low 60. High 75.

THURSDAY: Partly cloudy. Isolated showers. Low 61. High 76.

FRIDAY: Partly cloudy.  Low 61. High 81.

SATURDAY: Partly cloudy. Low 66. High 88.

Saturday PM Forecast Update

3:50PM

Forecast update for eastern MA, southern NH, and RI. Another update Sunday morning followed by a full discussion and forecast for the week ahead on Sunday evening…

Have a great weekend and be safe!

SATURDAY AFTERNOON / EVENING (THRU 9PM): Variably cloudy. Scattered showers and thunderstorms. Any storms may contain gusty winds and hail. Highs 80-85 occurring at mid afternoon will fall back into the 70s but will fall more rapidly to the 60s where any rain occurs. Wind variable 5-15 MPH except strong and gusty near some storms.

SATURDAY NIGHT (AFTER 9PM): Any showers/storms end. Partly cloudy to mostly clear. Patchy fog forming in areas where rain fell. Low near 60. Wind light variable.

SUNDAY: Sunny to partly cloudy. High 80-85 except 70s some coastal areas. Wind NW-N 5-15 MPH.

MONDAY: Cloudy. Showers/thunderstorms likely. Low 62. High 74.

TUESDAY: Partly sunny. Scattered showers. Low 58. High 75.

WEDNESDAY: Partly sunny. Isolated showers. Low 58. High 75.

THURSDAY: Partly cloudy. Low 61. High 74.

FRIDAY: Partly sunny. Isolated PM showers. Low 61. High 81.

SATURDAY: Partly cloudy. Isolated AM showers. Low 64. High 83.

Heat Ending

5:22PM

Short Term (through evening ): Thunderstorm threat continues through tonight in eastern MA, RI, and southern NH, though I don’t expect any widespread severe weather. Any storms that do occur could cause torrential rain and frequent lightning. Through early evening, most of this activity will occur in RI, with isolated showers and storms popping up elsewhere.

Tonight: A cold front will slowly push across the region from west to east with more widespread showers and thunderstorms, some of which will produce heavy rain and local street flooding. Not expecting severe weather from this either (damaging wind, large hail).

Saturday: With a cold front sitting just offshore, clouds will dominate to start, then a mix of sun and clouds for the afternoon, with the atmosphere unstable enough to run the risk of some pop up showers and thunderstorms, primarily during the 2PM to 6PM time frame. Drier air pushing in at night will put an end to any of this.

Sunday: High pressure will be in control at the surface, with upper level low pressure to the north. This will result in a fair, comfortable day, with most clouds popping up over the mountains to the north, leaving the forecast area with lots of sun.

Early to mid next week: Upper level low pressure will extend a lobe southward and a disturbance coming along will cause unsettled weather Monday, with a break Tuesday as a drier slot  air moves in. Additional clouds will be around at midweek with a minimal shower threat as the upper low hangs around for a couple extra days.

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

THROUGH SUNSET: Partly to mostly cloudy. Isolated showers and thunderstorms except more numerous activity moving across RI and southeastern MA. Temperatures in the 80s to lower 90s but falling back into the 70s where rain occurs. Wind SW 5-15 MPH but variable and gusty around any storms.

TONIGHT: Mostly cloudy. Scattered to numerous showers and thunderstorms. Low 65-70. Wind variable to W mostly under 10 MPH.

SATURDAY: Mostly cloudy in the morning. Partly sunny with isolated to scattered showers and thunderstorms in the afternoon. High 75-80. Wind variable to N around 10 MPH.

SATURDAY NIGHT: Mostly clear. Low 60-65 except 50s some interior valleys. Wind light variable.

SUNDAY: Mostly sunny to partly cloudy. High 78-83. Wind variable 5-15 MPH.

MONDAY: Cloudy. PM showers/thunderstorms. Low 62. High 74.

TUESDAY: Partly cloudy. Low 58. High 75.

WEDNESDAY: Partly sunny. Isolated showers. Low 58. High 75.

THURSDAY: Mostly cloudy. Low 61. High 74.

FRIDAY: Mostly sunny. Low 61. High 81.

Record Heat Today, Thunderstorms Friday

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.

Wednesday Forecast Update

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.