Boston/ Weather & Environment

Boston Basks in One Last Sunny 77-Degree Day Before Showers, Fall Chill Sweep In

AI Assisted Icon
Published on September 16, 2026
Boston Basks in One Last Sunny 77-Degree Day Before Showers, Fall Chill Sweep InSource: Google Street View

Boston gets one more sunny, summer-like day Wednesday, with mostly clear skies and temperatures rising to around 77 degrees. The city should stay dry through the afternoon, while a light southwest breeze keeps things moving.

Patchy fog is possible in parts of the region early, but it should burn off after sunrise. Humidity will also creep back up, making the afternoon feel a bit more like late summer than mid-September.

Warm Wednesday Gives Way To A Wetter Thursday Night

The National Weather Service Boston/Norton expects a high near 77 Wednesday, with southwest winds between 5 and 9 mph. No watches, warnings or advisories are listed for Boston or Massachusetts in the current forecast.

Thursday starts mainly dry but turns mostly cloudy, with a slight chance of showers after 2 p.m. The chance of rain rises Thursday night to 50%, with a low around 65 and rainfall generally expected to stay between a tenth and a quarter of an inch.

Friday Clears Out Before A Fall-Like Weekend

A few showers could linger before 7 a.m. Friday, followed by mostly sunny skies and a high near 76. Northwest winds of 9 to 13 mph will usher in noticeably cooler air, with temperatures dropping to around 53 Friday night.

Saturday looks like the week’s best outdoor window, bringing mostly sunny skies and a high near 65. That cooler pattern marks a sharp change from the warmer, gustier setup tracked in Hoodline’s earlier Boston forecast.

Rain chances return late Saturday night and continue into Sunday, when Boston could see scattered showers, mostly cloudy skies and a high near 63. Monday and Tuesday remain on the cool side, with highs near 63 and additional chances for showers as the unsettled stretch lingers.

Boston-Weather & Environment