1:05AM
A 24-hour transition out of heat and humidity to somewhat cooler and drier weather will take place during the course of Wednesday as a cold front settles southward through southern New England. This front will set off some scattered thunderstorms, the first threat having been realized over parts of southern NH and briefly into northeastern MA Tuesday evening, a second threat possible in the wee hours of Wednesday morning, and finally a third threat mainly near and south of the Mass Pike during the afternoon and evening hours Wednesday. Even into Thursday, some clouds may linger in South Coastal New England as the front will not be that far away. Enough of a push southward should allow a refreshing airmass to move in Thursday night through Saturday. The small area of high pressure that is at the center of this airmass will quickly settle to the south, allowing humidity to return Sunday, and a front from the west will bring the chance of showers and thunderstorms as early as Sunday night into Monday, based on current timing (still several days to pinpoint).
Forecast for eastern MA, southern NH, and RI…
OVERNIGHT: Variably cloudy. Isolated to scattered showers and thunderstorms. Warm/muggy. Lows in the 70s, few upper 60s. Wind W 5-15 MPH with higher gusts.
WEDNESDAY: Partly sunny through midday, then mostly cloudy. Scattered showers and thunderstorms developing especially near and south of the Mass Pike by mid afternoon, continuing mostly in southern MA and RI through evening, less of a chance to the north. Highs in the upper 80s to lower 90s but may cool back toward 80 in some areas north of the Mass Pike during the afternoon. Wind variable up to 10 MPH but some higher wind gusts around any storms.
WEDNESDAY NIGHT: Mostly cloudy. Mild and slightly less humid. Lows in the 60s. Wind variable to N up to 10 MPH.
THURSDAY: Mostly cloudy to partly sunny in southern MA including Cape Cod as well as RI, and partly to mostly sunny in areas to the north. Warm and less humid. Highs in the lower to middle 80s. Wind N 5-15 MPH.
FRIDAY: Mostly sunny to partly cloudy. Low 60. High 79.
SATURDAY: Mostly sunny. Low 58. High 81.
SUNDAY: Partly cloudy. Low 62. High 86.
MONDAY: Mostly cloudy. Chance of showers and thunderstorms. Low 66. High 82.
TUESDAY: Partly sunny. Low 65. High 84.