Kankakee County Climate
Kankakee County, Illinois
Avg Annual Temp
51.2°F
Annual Precip
39.7"
Annual Snowfall
23.9"
Extreme Heat Days
21.3
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Kankakee County Weather
Moderate temperatures and steady rain
At 51.2°F, Kankakee County sits just below the national median for annual temperature. The county receives 39.7 inches of precipitation, making it a well-watered region of the American Midwest.
Slightly cooler than state average
The average temperature of 51.2°F is a bit cooler than the Illinois state average of 52.8°F. Precipitation remains close to the state benchmark, trailing by only two inches at 39.7 inches annually.
Warmer than its northern neighbors
Kankakee is warmer than Kane County, which averages 49.5°F. It also faces fewer snowfall challenges, recording 23.9 inches compared to the 32.8 inches seen in Kane.
Warm summers and brisk winters
July brings an average of 74.8°F with 21 days of heat exceeding 90°F. Winter is distinct and cold, with a seasonal average of 27.5°F and nearly 24 inches of snow.
Equip for summer and winter
With 21 extreme heat days, efficient cooling is a high priority for local households. Residents should also keep snow shovels ready for the 23.9 inches of typical winter accumulation.
Frequently Asked Questions
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Data source: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020.
Climate normals are 30-year averages of weather variables computed from 1991 to 2020. Station data is aggregated to county level using spatial averaging. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.