Weather in Chicago in January
January in Chicago is cold with average temperatures around -2.6°C (27.3°F). Light rainfall with only 48mm expected.
Data Note: Temperature values are 2001–2020 satellite/reanalysis grid averages from NASA POWER and may differ from airport station normals by a few degrees.
Temperature
High
-0.2°C
31.6°F
Low
-5.0°C
23.0°F
Precipitation
48 mm
1.9 inches
~8 rainy days
Conditions
Humidity
86%
Comparison to Adjacent Months
January is 3.0°C cooler than December.