Calhoun, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Calhoun, a village in Richland County, Illinois.
This Afternoon
66°F
Slight Chance Drizzle
A slight chance of drizzle. Mostly cloudy. High near 66, with temperatures falling to around 60 in the afternoon. West wind around 10 mph.
7-day forecast for Calhoun
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 66°F | Slight Chance Drizzle | 10 mph W | 10% |
| Tonight | 46°F | Slight Chance Drizzle then Mostly Cloudy | 5 mph SW | 10% |
| Thursday | 63°F | Sunny | 6 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 8 mph NNW | 0% |
| Saturday | 55°F | Sunny | 2 to 6 mph NNW | 0% |
| Saturday Night | 32°F | Mostly Clear | 2 mph NW | 0% |
| Sunday | 59°F | Sunny | 1 to 6 mph WNW | 0% |
| Sunday Night | 34°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) for Calhoun (38.651, -88.044). Updated through the day.
Growing snapshot for Calhoun
Last spring frost
Apr 15
First fall frost
Oct 23
Growing season
189 days
Hardiness zone
6b
More local growing data for Calhoun: nearby ZIP 62452 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Olney 2S, Il (8.4 mi from Calhoun). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 5, 2026.