Kilbourne, IL Weather & Growing Conditions
Today
60°F
Slight Chance Drizzle
A slight chance of drizzle after 8am. Cloudy, with a high near 60. West southwest wind 10 to 15 mph, with gusts as high as 26 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 60°F | Slight Chance Drizzle | 10 to 15 mph WSW | 10% |
| Tonight | 42°F | Slight Chance Drizzle then Mostly Cloudy | 10 mph WSW | 10% |
| Thursday | 59°F | Mostly Cloudy then Slight Chance Light Rain | 9 to 13 mph W | 15% |
| Thursday Night | 42°F | Mostly Cloudy | 7 mph NW | 14% |
| Friday | 53°F | Partly Sunny | 9 mph N | 6% |
| Friday Night | 32°F | Partly Cloudy | 1 to 6 mph N | 0% |
| Saturday | 53°F | Sunny | 3 mph NW | 0% |
| Saturday Night | 32°F | Mostly Clear | 1 mph WNW | 1% |
| Sunday | 59°F | Sunny | 1 to 6 mph W | 1% |
| Sunday Night | 33°F | Clear | 2 mph WSW | 1% |
| Monday | 64°F | Sunny | 1 to 6 mph SW | 0% |
| Monday Night | 38°F | Clear | 3 mph SW | 0% |
| Tuesday | 66°F | Sunny | 3 mph WNW | 0% |
| Tuesday Night | 39°F | Mostly Clear | 1 mph NNE | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Kilbourne, IL
Last spring frost
Apr 17
First fall frost
Oct 19
Growing season
185 days
Hardiness zone
6a
Explore more for Kilbourne, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Havana, Il (10.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.