Calhoun, IL Weather & Growing Conditions
This Afternoon
67°F
Patchy Drizzle
Patchy drizzle. Mostly cloudy. High near 67, with temperatures falling to around 60 in the afternoon. West southwest wind 7 to 13 mph, with gusts as high as 20 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 67°F | Patchy Drizzle | 7 to 13 mph WSW | 10% |
| Tonight | 46°F | Patchy Drizzle then Mostly Cloudy | 1 to 5 mph WSW | 10% |
| Thursday | 63°F | Sunny | 5 to 12 mph WSW | 0% |
| Thursday Night | 44°F | Mostly Cloudy | 3 mph WNW | 10% |
| Friday | 56°F | Partly Sunny | 5 to 12 mph NNW | 0% |
| Friday Night | 34°F | Mostly Clear | 2 to 7 mph NNW | 0% |
| Saturday | 55°F | Sunny | 2 to 6 mph NNW | 0% |
| Saturday Night | 31°F | Mostly Clear | 2 mph NW | 0% |
| Sunday | 59°F | Sunny | 0 to 6 mph WNW | 0% |
| Sunday Night | 33°F | Mostly Clear | 2 mph NW | 0% |
| Monday | 64°F | Sunny | 0 to 6 mph SW | 0% |
| Monday Night | 37°F | Clear | 2 mph SW | 0% |
| Tuesday | 65°F | Sunny | 5 mph W | 0% |
| Tuesday Night | 39°F | Mostly Clear | 2 mph NW | 2% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Calhoun, IL
Last spring frost
Apr 15
First fall frost
Oct 23
Growing season
189 days
Hardiness zone
6b
Explore more for Calhoun, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Olney 2S, Il (7.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.