Monthly Average Rainy days in Oak Brook (IL)
The number of days each month with rain, snow and hail in Oak Brook (Illinois), the United States of America.
- Most rainy days are in December.
- On average, December is the most rainy with 15 days of rain/snow.
- On average, September is the driest month with 10 rainy days.
- The average annual number of rainy days is 151.
Current rainfall in Oak Brook (IL)
almost clear and no rain
overcast and rain
overcast and heavy rain