Kewanee, IL Weather & Growing Conditions
This Afternoon
67°F
Showers And Thunderstorms
Showers and thunderstorms. Mostly cloudy, with a high near 67. South wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 67°F | Showers And Thunderstorms | 15 mph S | 86% |
| Tonight | 53°F | Showers And Thunderstorms | 15 mph S | 84% |
| Wednesday | 57°F | Slight Chance Rain Showers then Mostly Cloudy | 15 mph SW | 23% |
| Wednesday Night | 46°F | Mostly Cloudy | 10 to 15 mph SW | 14% |
| Thursday | 56°F | Chance Rain Showers | 10 to 15 mph W | 35% |
| Thursday Night | 44°F | Chance Rain Showers then Mostly Cloudy | 5 to 10 mph NW | 32% |
| Friday | 52°F | Slight Chance Rain Showers then Mostly Cloudy | 10 to 15 mph N | 15% |
| Friday Night | 36°F | Partly Cloudy | 0 to 5 mph N | 1% |
| Saturday | 52°F | Mostly Sunny | 0 to 5 mph W | 3% |
| Saturday Night | 36°F | Partly Cloudy | 0 to 5 mph W | 5% |
| Sunday | 58°F | Sunny | 5 to 10 mph W | 12% |
| Sunday Night | 37°F | Mostly Clear | 5 mph W | 2% |
| Monday | 63°F | Sunny | 5 to 15 mph SW | 2% |
| Monday Night | 42°F | Mostly Clear | 5 to 10 mph W | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Kewanee, IL
Last spring frost
Apr 24
First fall frost
Oct 17
Growing season
175 days
Hardiness zone
5b
Explore more for Kewanee, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Kewanee 1 E, Il (2.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.