Boston Weather in September

Thinking of visiting Boston in September? Expect pleasant temperatures reaching 20°C (68°F) during the day, dropping to 11°C (52°F) at night, and note that quite a bit of rainfall is likely.

Rainfall in Boston in September

Historically, the month has about 12 days of rain, averaging 62 mm (2.4 in) in total. Neither particularly heavy nor particularly frequent, the rain this month is about average. A light jacket should be enough on most wet days.

Temperature in Boston in September

If you're visiting Boston in September, expect excellent temperatures with highs of 20°C (68°F) and overnight lows of 11°C (52°F). Even when the weather is stable, mornings and evenings can still feel distinctly cool. At 11°C (52°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.

Sunshine in Boston in September

The area enjoys a moderate level of sunlight, with around 144 hours. It's a good balance between sunny and cloudy days.

If you favor pleasant temperatures and minimal rainfall, September is one of the best months to visit Boston.