Kankakee County Climate
Kankakee County, Illinois
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
51.2°F
Annual Precip
39.7"
Annual Snowfall
23.9"
Extreme Heat Days
21
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
5b
Minimum winter temperature range for plant survival
3,373
Supports most vegetables & fruits
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Kankakee County
Climate Verdict
Kankakee County has a mild, with an average annual temperature of 51.2°F, moderate rainfall of 39.7 inches per year, occasional hot days — 21.3 per year above 90°F, moderate snowfall of 23.9 inches annually. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are very cold — January averages 24.4°F. summers are warm — July averages 74.8°F. Residents experience a substantial 50°F difference between winter and summer.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for Kankakee County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Kankakee County closely matches the Illinois statewide average temperature of 52.8°F, it is somewhat drier than average for Illinois.
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 sources: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020. Forecast and alert data from National Weather Service API. Air quality data from Open-Meteo.
Climate normals are 30-year averages of weather variables. Station data is aggregated to county level. Forecasts and alerts are fetched live and may change frequently. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.