Average monthly rainy days in Mattoon (IL)
The number of days each month with rain, snow and hail in Mattoon (Illinois), the United States of America.
- On average, May is the most rainy with 13 days of rain/snow.
- On average, August is the driest month with 8 rainy days.
- The average annual number of rainy days is 121.
Forecast for Mattoon (IL)
almost clear and no rain
partly cloudy and no rain
partly cloudy and chance of slight rain