Boston weather by month › January
Boston in January: weather and what to expect
Cold. Highs average 37°F (3°C), so it suits a winter trip. For milder weather, go in May to June and September.
January weather in Boston
Daytime high37°F 3°C
Night low20°F -6°C
Rain3.7 in 95 mm
AirDry
SunWeak sun
In January, Boston averages highs of 37°F (3°C) and lows of 20°F (-6°C), with 3.7 in (95 mm) of rain. The air feels dry and the sun is weak. 1991–2020 averages, not a forecast.
Pack: a heavy winter coat.
Places with the same weather in January
Match out of 100 for January, one city per country.
Jan · Feb · Mar · Apr · May · Jun · Jul · Aug · Sep · Oct · Nov · Dec