Calhoun, IL Weather & Growing Conditions
Today
86°F
Sunny
Sunny, with a high near 86. East wind around 2 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 86°F | Sunny | 2 mph E | 0% |
| Tonight | 64°F | Mostly Clear | 2 mph ESE | 0% |
| Wednesday | 88°F | Sunny | 0 to 3 mph S | 0% |
| Wednesday Night | 68°F | Partly Cloudy | 2 mph SSE | 6% |
| Thursday | 86°F | Chance Rain Showers | 2 to 7 mph SSW | 34% |
| Thursday Night | 69°F | Showers And Thunderstorms Likely | 1 to 5 mph S | 57% |
| Friday | 86°F | Chance Showers And Thunderstorms | 2 to 6 mph SW | 41% |
| Friday Night | 69°F | Chance Showers And Thunderstorms | 3 mph SSW | 32% |
| Saturday | 87°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 2 to 6 mph SSW | 32% |
| Saturday Night | 70°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 5 mph S | 23% |
| Sunday | 89°F | Mostly Sunny | 5 to 9 mph SSW | 11% |
| Sunday Night | 72°F | Mostly Clear | 8 mph SSW | 11% |
| Monday | 90°F | Sunny | 6 to 10 mph SSW | 11% |
| Monday Night | 73°F | Slight Chance Showers And Thunderstorms | 7 mph SSW | 18% |
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 Aug 4, 2026.