Boston/ Weather & Environment

Boston Basks in Two-Day Heat Tease Before Fall Chill Crashes Weekend

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Published on September 30, 2026
Boston Basks in Two-Day Heat Tease Before Fall Chill Crashes WeekendSource: Google Street View

Boston starts Wednesday, September 30, under a cloudy sky and temperatures around 60 degrees, but the day should brighten. Partly sunny skies are expected to push the afternoon high near 69, with light northerly winds turning southwest late in the day and almost no chance of rain.

Warmest Stretch Arrives Thursday And Friday

The National Weather Service expects a mostly cloudy night with a low around 58 and a light south wind. Thursday turns mostly sunny and warmer, with the high reaching about 77 as southwest winds increase to 6 to 12 mph.

Friday should be the warmest day of the stretch, with mostly sunny skies and a high near 80. Southwest winds will run 8 to 13 mph, while a cold front could bring rain showers Friday night between roughly 7 p.m. and 4 a.m.; the chance of precipitation is about 30%.

Weekend Cooldown Brings A Different Feel

Saturday will be sunny but noticeably cooler, topping out near 67 with north winds of 6 to 10 mph. Sunday stays mostly sunny with a high around 62 and a slight chance of showers.

A few showers could linger early Monday before skies turn mostly sunny. The bigger change comes Monday night and Tuesday, with Tuesday's high possibly reaching the low 50s.

For Boston, the forecast offers one more warm-weather window before the calendar starts acting like October: enjoy Thursday and Friday outdoors, then keep a jacket handy for the weekend and early next week. No active weather alerts are listed for the city in the current forecast.

Boston-Weather & Environment