Boston Weather Forecast: Sunny Midweek Followed by Friday Showers and Thunderstorm Risk

Massachusetts residents are enjoying a refreshing stretch of late-summer sunshine, but a cold front on the way means showers and thunderstorms are back in the forecast by Friday. Until then, Wednesday and Thursday will bring some of the nicest weather in weeks, with mild temperatures and low humidity.

Midweek Weather: Warm, Dry, and Comfortable

After a stretch of humid and unsettled days earlier this month, Boston and surrounding areas will enjoy dry, stable weather through Thursday. The National Weather Service in Boston says skies will be partly sunny with cool mornings and pleasant afternoons.

Forecast highlights:

Wednesday: Partly sunny, brief spot shower possible

Thursday: Mostly sunny, dry, highs between 74–79°F

Humidity: Low, making it feel cooler and more comfortable

This is an ideal time for outdoor plans, walks along the Charles, or open-air dining in the city.

Friday Brings a Weather Shift: Showers and Thunderstorms Likely

A cold front will sweep across eastern Massachusetts on Friday, breaking the calm pattern. Scattered showers and the risk of thunderstorms are expected, especially during the afternoon and evening.

Areas likely to be affected:

Boston metro

Worcester County

South Shore towns

Along major roads like I-90 and I-95

What to expect:

Intermittent showers, some brief downpours

A few thunderstorms, though severe weather isn’t likely

Wet roads, especially during afternoon commute hours

If you have outdoor plans or weekend travel scheduled, it’s a good idea to stay weather-aware and check updates throughout the day Friday.

Weekend Preview: Cooler, Drier Conditions After the Front

Once the cold front moves out, conditions will improve again heading into the weekend. While it’s still early to lock in the full weekend outlook, early signs point to cooler and drier weather, with lower humidity returning.

Three-Day Forecast for Boston, MA

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