Boston/ Weather & Environment

Sunny Boston Braces for Mid-80s Heat and Gale Watches Off Cape Cod

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Published on September 08, 2026
Sunny Boston Braces for Mid-80s Heat and Gale Watches Off Cape CodSource: Harald Johnsen / Wikimedia Commons

Boston is starting Tuesday near 66 degrees at Logan, with mostly sunny skies and a high near 79 ahead. The calm stretch will give way Wednesday afternoon as southwest breezes develop, followed by warmer, more humid air and a burst of wind late Wednesday night.

Sunshine Holds Through Wednesday

Tuesday should be mostly sunny with a north wind around 10 mph, while temperatures fall to about 63 Tuesday night under mostly cloudy skies. Wednesday stays plenty sunny and mild, reaching the upper 70s to lower 80s as a southwest breeze develops by mid to late afternoon.

Wind And Showers Arrive Wednesday Night

The latest forecast from the National Weather Service Boston/Norton calls for brief scattered showers after 2 a.m. Thursday, with southwest winds gusting 20 to 30 mph and a few gusts of 35 to 40 mph possible near the upper Cape. Thursday could reach the middle 80s, with a chance of showers before 2 p.m., but most of the day should remain dry.

Coastal Waters Face The Biggest Wind Risk

A Gale Watch is posted from Wednesday evening through Thursday morning for Buzzards Bay, Cape Cod Bay and Nantucket Sound, while no land-based alerts are listed for Boston. The update is a sharper turn from Hoodline's previous forecast, adding a clearer warning about rougher coastal conditions and gusty winds.

Cooler, Clearer Weather Returns Friday

Friday looks sunny and noticeably cooler, with a high near 74 and lows in the 40s to lower 50s Friday night and Saturday morning, followed by another sunny day near 73 on Saturday. Sunday warms back to about 78 under mostly sunny skies, while the Sunday-night and Monday outlook remains less specific.

Boston-Weather & Environment