Calhoun, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Calhoun, a village in Richland County, Illinois.
This Afternoon
79°F
Partly Sunny
Partly sunny, with a high near 79. South southeast wind around 18 mph, with gusts as high as 31 mph. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Calhoun
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 79°F | Partly Sunny | 18 mph SSE | 7% |
| Tonight | 59°F | Rain | 12 to 18 mph S | 97% |
| Wednesday | 67°F | Slight Chance Light Rain then Mostly Cloudy | 8 to 13 mph SW | 17% |
| Wednesday Night | 45°F | Mostly Cloudy | 2 to 6 mph WSW | 0% |
| Thursday | 67°F | Sunny | 5 to 12 mph SW | 0% |
| Thursday Night | 45°F | Partly Cloudy | 3 mph WNW | 4% |
| Friday | 60°F | Mostly Cloudy | 3 to 9 mph NNW | 3% |
| Friday Night | 39°F | Partly Cloudy | 3 to 7 mph NNW | 3% |
| Saturday | 56°F | Mostly Sunny | 2 to 6 mph NNW | 0% |
| Saturday Night | 35°F | Partly Cloudy | 1 mph WNW | 2% |
| Sunday | 61°F | Sunny | 1 to 8 mph W | 6% |
| Sunday Night | 35°F | Mostly Clear | 5 mph WNW | 5% |
| Monday | 64°F | Sunny | 2 to 8 mph W | 2% |
| Monday Night | 39°F | Mostly Clear | 5 mph SW | 1% |
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 4, 2026.