Monthly climate ·Chicago weather in January
In January, Chicago averages around 0° by day and -7° at night, with 10 rain days a month — about a 32% chance of rain on any given day.
By day
0°C
At night
-7°C
Daily rain chance
32%
Rain days a month
10
Monthly precipitation
66 mm
Sunshine hours a day
5
Average of 2016–2025 (Open-Meteo archive). Typical climate — not a forecast.
Is January a good time to visit Chicago?
January is cold in Chicago — around 0° by day and -7° at night on average. Pack warm clothing and keep plans flexible.
Every month in Chicago
Frequently asked questions
- What is the weather in Chicago in January?
- In January, temperatures in Chicago average between -7° at night and 0° by day, with 10 rain days a month (average of 2016–2025).
- How much rain falls in Chicago in January?
- Chicago gets about 66 mm of rain in January on average, spread over roughly 10 rain days.
- Is January a good time to visit Chicago?
- January is cold in Chicago — around 0° by day and -7° at night on average. Pack warm clothing and keep plans flexible.