ClimaGo
← Back to Boston

ClimaGoBostonWeather in September

Boston Weather in September

United States

September transitions to comfortable warm weather in the 70s with lower humidity, creating ideal conditions for walking tours, outdoor festivals and enjoying Boston's neighborhoods before autumn's arrival.

Avg High

23°C

Avg Low

15°C

Daily Rain

5.9mm

Rainfall

Moderate

💡 Best months to visit Boston: Aug, Jun, Jul

Boston Weather by Month

MonthHighLowRain
Jan3°C-5°C3.4mm
Feb4°C-6°C3.2mm
Mar9°C-1°C2.8mm
Apr14°C4°C2.8mm
May21°C10°C2.6mm
Jun25°C15°C2.8mm
Jul28°C19°C4.8mm
Aug28°C19°C3.4mm
Sep23°C15°C5.9mm
Oct18°C10°C4.4mm
Nov11°C2°C2.2mm
Dec7°C-1°C3.7mm

About Boston

Boston's Freedom Trail, Ivy League heritage and seafood excellence reveal American Revolutionary history.