Average monthly snow and rainfall in Chicago (Illinois) in millimeter
This is the mean monthly precipitation over the year, including rain, snow, hail etc.
Show average precipitation in Chicago in Inches »
- Most rainfall (rainy season) is seen in August.
- On average, August is the wettest month.
- On average, February is the driest month.
- The average amount of annual precipitation is: 910.0 mm (35.83 in)