Donnellson, IL Weather & Growing Conditions
Tonight
55°F
Rain
Rain. Mostly cloudy, with a low around 55. South wind 9 to 15 mph, with gusts as high as 29 mph. Chance of precipitation is 90%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 55°F | Rain | 9 to 15 mph S | 88% |
| Wednesday | 62°F | Slight Chance Drizzle then Mostly Cloudy | 7 to 13 mph SW | 14% |
| Wednesday Night | 42°F | Partly Cloudy | 6 mph SW | 1% |
| Thursday | 63°F | Sunny | 5 to 12 mph W | 0% |
| Thursday Night | 41°F | Mostly Cloudy | 5 mph NW | 5% |
| Friday | 57°F | Partly Sunny | 5 to 9 mph NW | 7% |
| Friday Night | 36°F | Partly Cloudy | 2 to 6 mph N | 2% |
| Saturday | 55°F | Mostly Sunny | 3 mph NW | 0% |
| Saturday Night | 33°F | Partly Cloudy | 1 mph NW | 1% |
| Sunday | 61°F | Sunny | 1 to 6 mph W | 6% |
| Sunday Night | 33°F | Mostly Clear | 3 mph NW | 4% |
| Monday | 64°F | Sunny | 1 to 8 mph SW | 2% |
| Monday Night | 37°F | Mostly Clear | 3 mph SW | 1% |
| Tuesday | 67°F | Sunny | 5 mph W | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Donnellson, IL
Last spring frost
Apr 13
First fall frost
Oct 24
Growing season
192 days
Hardiness zone
6b
Explore more for Donnellson, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Hillsboro, Il (10.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.