Average monthly snow and rainfall in Decatur (IL)
The mean monthly precipitation over the year in Decatur (Illinois), including rain, snow, hail.
- A lot of rain (rainy season) falls in the months: April, May and June.
- On average, June is the wettest month with 149 mm of precipitation.
- On average, January is the driest month with 43 mm of precipitation.
- The average amount of annual precipitation is 1057 mm.
Forecast for Decatur (IL)
broken clouds and thunder
clear and no rain
almost clear and no rain