The warm front that moved through here late Tuesday continues to lift north of us and should be draped across northern New England Wednesday. We are now in the warm and muggy air mass as high pressure to our south provides the heat pump. Dew points are creeping to around 70 degrees this evening and it is becoming very sticky out there. It will be a very warm and muggy Tuesday night.
Wednesday may be the first day we reach 90 at Westover Air Base since July 20th, as the heat and humidity really settles into the area. The record high for September 11th is 99 degrees which is likely out of reach, but nonetheless it is going to be unusually warm for this time of year with excessive heat and humidity. Although we expect a mainly sunny day a shower or passing thunderstorm cannot be ruled out late in the day or Wednesday evening, however what really catches your attention will be the heat.
Meanwhile, a complex and sprawling area of low pressure across southern Canada and the Great Lakes will stay to our north, finally sweeping a cold front through here later Thursday night. With the approaching front we can expect numerous showers and thunderstorms to develop Thursday afternoon and night. Some of the storms could be strong with locally heavy rainfall. This will need to be monitored as we approach Thursday as severe weather could occur.
Behind this front Autumn returns as a flow of cool Canadian air follows Friday and especially into the weekend as large high pressure expands into the region.
Tropical Storm Gabrielle will pass well out to sea late this week and will have no impacts to the area except for swells along the east facing coastal beaches.
Five Day Outlook:
Wednesday: Early morning patchy fog, otherwise becoming partly to mostly sunny, hot and very humid. Chance of a late day shower or thunderstorm. High temperatures 88 to 93 degrees. South to southwest winds 5 to 10 mph.
Wednesday night: Chance of an evening shower or storm, becoming mostly cloudy overnight with a few scattered showers possible. Warm and humid. Lows 68 to 73. Light winds.
Thursday: Early sun, giving way to partly then mostly cloudy skies through the afternoon. Chance of showers and thunderstorms developing in the afternoon. Warm and humid. Highs 84 to 88. Increasing south to southwest winds to 15 or 20 mph.
Thursday night: Showers and storms likely. Continued humid but not as warm. Lows 64 to 68. Winds becoming west around midnight.
Friday: Becoming partly cloudy, cooler, breezy and less humid. Chance of a passing shower. Highs 70 to 74.
Friday night: Fair skies and much cooler. Lows 42 to 48.
Saturday and Sunday: Mostly to partly sunny days. Fair skies overnight. Highs 65 to 69 Saturday, about 70 on Sunday. Nighttime lows 44 to 48 Saturday night.