DAYS 1-5 (JULY 23-27)
A brief discussion for today’s update so I can kick you out to enjoy the very nice weather! A ribbon of high clouds behind an offshore frontal boundary filters and limits the sun a little for a portion of the morning, and some lower clouds / fog sit over Nantucket, but that will improve and the high clouds will shift eastward with the area overall enjoying abundant sun and lower humidity with seasonable temperatures – warmest inland, coolest at the beaches where light sea breezes will develop. Dew point temperatures today will range from about 55 to 62 by this afternoon after being a little higher than that to start the day, and will be highest along the coast where the temperature will be the coolest. High pressure hangs on Monday and even a sliver of it remains over the region between two disturbances through Tuesday. One low pressure area, small and weak, will track south of our area later Monday into Tuesday, spreading some of its high level clouds in. Another disturbance approaching from the northwest later Tuesday will be slow enough that its diurnal showers will never reach the region. They should dissipate and just remnant clouds should cross the area Tuesday night, based on current timing. Dew points creep up a tiny bit on Tuesday, but it’ll still be relatively comfortable. Even Wednesday, which is going to be a warmer to borderline hot day, even at the coast, with a westerly wind, the dew point will not sky rocket, held in check by the down sloping action of the westerly breeze off the hills / mountains to our west. For the best combo of warmth without uncomfortable humidity, Wednesday is the day. High pressure off the US East Coast will help intensify the heat a little more and bump up the humidity by Thursday, but I’m not expecting any thunderstorms that day due to it being too warm aloft and therefore too stable, also lacking any surface mechanism to trigger them, so just expect a hot summer day with fair weather.
TODAY: Early clouds eastern areas, then sunny. Highs 81-88 except cooling back to the 70s coastal areas. Dew point middle 50s to lower 60s, highest along the shoreline. Wind NW up to 10 MPH but coastal sea breezes.
TONIGHT: Mostly clear. Lows 60-67. Dew point upper 50s. Wind variable under 10 MPH.
MONDAY: Mostly sunny. Highs 80-87, coolest coast. Dew point around 60. Wind variable up to SW up to 10 MPH with coastal sea breezes.
MONDAY NIGHT: Mostly clear. Fog patches may form in lower elevations. Lows 61-68. Dew point near 60. Wind variable under 10 MPH.
TUESDAY: Partly cloudy. Highs 81-88. Dew point 60+. Wind SW 5-15 MPH.
TUESDAY NIGHT: Mostly cloudy. Lows 63-70. Dew point 60+. Wind SW up to 10 MPH.
WEDNESDAY: Early clouds, then sun dominates. Highs 83-90. Dew point 60+. Wind W 5-15 MPH.
WEDNESDAY NIGHT: Mostly clear. Lows 65-72. Dew point 60+. Wind WSW up to 10 MPH.
THURSDAY: Sunny. Highs 88-95. Dew point 65+. Wind SW 5-15 MPH.
DAYS 6-10 (JULY 28 – AUGUST 1)
Heat, humidity, and thunderstorm chances July 28 as a cold front approaches and high pressure sits offshore. A shot of Canadian air brings warm weather and lower humidity for the final few days of July before humidity and unsettled weather returns to greet the arrival of August.
DAYS 11-15 (AUGUST 2-6)
Indications are trending toward weak troughing, higher humidity, and some shower / thunderstorm chances – a weaker version of a pattern we’ve seen much of the summer.