Climate change in Kankakee County, Illinois
Since 1979, Kankakee County, Illinois has warmed 2.0°F, with 1 fewer days above 90°F, 1 fewer nights above 70°F and 4% more precipitation a year. Its climate in 1996–2025 is most like Marion County, IN's was in 1951–1980.
- Average temperature: +2.0°F
- Summer highs (Jun–Aug): +0.1°F
- Winter lows (Dec–Feb): +3.2°F
- Precipitation: +4%
- Wettest day of the year: +15%
- Longest dry spell: −6 days
- Days above 90°F: −1 days
- Nights above 70°F: −1 days
- Freezing nights: −5 days
- Frost-free season: +9 days
- Muggy days: +1 days
- Summer heat index (Jun–Aug): +0.0°F
- Extreme fire-weather days: +12 days
- Snowfall: +8%
- Snowy days (1 inch or more): +1 days
Changes follow the trend line through every year from 1979 to 2025. Data: NOAA nClimGrid-Daily; humidity from gridMET, adjusted to airport observations.