ClimateAverages

Boston Weather in September

JanFebMarAprMayJunJulAugSepOctNovDec
Right now
24°C
Partly cloudy · feels like 26°C
Humidity
64%
Wind
11 kph WSW
UV
0.6
Rain
0%
Updated Jul 9, 07:45 AMWeather data by WeatherAPI.com
September daytime high
22.8°C
September overnight low
11.1°C
September average
17.0°C

In September, Boston typically sees daytime highs of 22.8°C and overnight lows around 11.1°C. Compared to the annual average high of 15.0°C, September runs +7.8°C.

vs. annual avg high
+7.8°C
Rank among 12 months
#4 warmest
Hottest year overall
2011

Where September ranks in Boston

JanFebMarAprMayJunJulAugSep23°OctNovDec

FAQ

What is the average temperature in Boston in September?

September in Boston averages a daytime high of 22.8°C and an overnight low of 11.1°C.

Is September warm or cold in Boston?

September runs +7.8°C compared to Boston's annual average high of 15.0°C, ranking #4 of 12 months by warmth.

What should I pack for Boston in September?

Plan for daytime highs near 22.8°C and cooler evenings around 11.1°C.

Other months for Boston

JanuaryFebruaryMarchAprilMayJuneJulyAugustOctoberNovemberDecember

September in nearby cities

WorcesterSpringfieldLowellCambridgeBrocktonNew BedfordQuincyLynnNewtonFall RiverSomervilleLawrence