Kankakee, IL Weather & Growing Conditions
Today
85°F
Mostly Sunny
Mostly sunny, with a high near 85. South wind 0 to 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Mostly Sunny | 0 to 5 mph S | 2% |
| Tonight | 64°F | Partly Cloudy | 0 to 5 mph S | 1% |
| Wednesday | 83°F | Partly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph SW | 31% |
| Wednesday Night | 65°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 0 to 5 mph WSW | 86% |
| Thursday | 80°F | Showers And Thunderstorms | 0 to 5 mph SSW | 86% |
| Thursday Night | 62°F | Chance Showers And Thunderstorms | 0 mph | 49% |
| Friday | 83°F | Mostly Sunny | 0 mph | 7% |
| Friday Night | 64°F | Mostly Clear | 0 mph | 10% |
| Saturday | 85°F | Mostly Sunny | 0 to 5 mph SSW | 11% |
| Saturday Night | 68°F | Partly Cloudy | 0 to 5 mph SSW | 11% |
| Sunday | 87°F | Mostly Sunny | 5 to 10 mph SW | 12% |
| Sunday Night | 70°F | Slight Chance Showers And Thunderstorms | 5 to 10 mph SSW | 28% |
| Monday | 87°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 5 to 10 mph SW | 28% |
| Monday Night | 69°F | Chance Showers And Thunderstorms | 5 mph SW | 39% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Kankakee, IL
Last spring frost
Apr 19
First fall frost
Oct 24
Growing season
188 days
Hardiness zone
5b
Explore more for Kankakee, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Kankakee Metro Wastewater, Il (2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.