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 »
- A lot of rain (rainy season) falls in the months: April, May, June, July and August.
- On average, May is the wettest month with 120.0 mm (4.72 inch) of precipitation.
- On average, February is the driest month with 55.0 mm (2.17 inch) of precipitation.
- The average amount of annual precipitation is: 1020.0 mm (40.16 inch)
Weather Forecasts for Chicago (Illinois)
Patchy rain possible