Chicago Weather in January
-0.8°C high · -9.3°C low · 46 mm rain · 2.4h sun
Jan is a cool month in Chicago — not peak season, but a good time to avoid crowds.
January at a glance
| Metric | Value |
|---|---|
| Average high | -0.8°C |
| Average low | -9.3°C |
| Rainfall | 46 mm |
| Sunshine | 2.4 hours/day |
| Daylight | 9.3 hours |
What to pack in January
Pack a warm coat and layers for Chicago in January.
Chicago weather by month
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Frequently asked questions
What is the weather in Chicago in January?
Highs of -0.8°C and lows of -9.3°C, with about 46 mm of rain and 2.4 hours of sunshine per day.
Is January a good time to visit Chicago?
Jan is a cool month in Chicago — not peak season, but a good time to avoid crowds.
What to do in Chicago · Best time to visit Chicago
Climate data: Open-Meteo Historical (ERA5), 1991–2020. CC BY 4.0.