What to Wear in Boston in September
Pleasant early autumn. Expect 14°–23°C with 7 rainy days on average.
☀️
High
23°C
🌙
Low
14°C
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Rain days
7
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Feel
Mild & Comfortable
Typical outfit
~19°C average
About September in Boston
September in Boston typically brings pleasant early autumn. With averages of 14°–23°C, the conditions call for ideal sightseeing weather! layer smartly — mornings and evenings will be cooler.
Mornings feel cool but afternoons can warm up significantly. A trench or jacket over a lighter outfit is ideal.
September in other cities