Chicago weather by month › January
Chicago in January: weather and what to expect
Cold. Highs average 33°F (0°C), so it suits a winter trip. For milder weather, go in September.
January weather in Chicago
Daytime high33°F 0°C
Night low18°F -8°C
Rain2.1 in 53 mm
AirDry
SunWeak sun
In January, Chicago averages highs of 33°F (0°C) and lows of 18°F (-8°C), with 2.1 in (53 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