Donnellson, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Donnellson, a village in Montgomery County, Illinois.
This Afternoon
94°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 3pm. Sunny, with a high near 94. Heat index values as high as 102. Northeast wind around 3 mph. Chance of precipitation is 30%.
7-day forecast for Donnellson
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 94°F | Chance Showers And Thunderstorms | 3 mph NE | 25% |
| Tonight | 69°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 5 mph SE | 23% |
| Saturday | 95°F | Mostly Sunny | 6 mph SW | 6% |
| Saturday Night | 70°F | Partly Cloudy | 3 mph S | 5% |
| Sunday | 91°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 1 to 6 mph NW | 24% |
| Sunday Night | 63°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 7 mph N | 53% |
| Monday | 77°F | Rain Showers Likely | 6 to 10 mph NE | 62% |
| Monday Night | 57°F | Showers And Thunderstorms Likely | 6 to 12 mph NE | 62% |
| Tuesday | 71°F | Slight Chance Rain Showers then Mostly Cloudy | 10 mph N | 24% |
| Tuesday Night | 52°F | Mostly Cloudy | 5 to 10 mph N | 4% |
| Wednesday | 73°F | Mostly Sunny | 8 mph N | 3% |
| Wednesday Night | 53°F | Partly Cloudy | 2 to 7 mph N | 3% |
| Thursday | 76°F | Mostly Sunny | 2 to 7 mph N | 3% |
| Thursday Night | 55°F | Partly Cloudy | 2 to 6 mph N | 3% |
Forecast source: National Weather Service (api.weather.gov) for Donnellson (39.031, -89.476). Updated through the day.
Growing snapshot for Donnellson
Last spring frost
Apr 13
First fall frost
Oct 24
Growing season
192 days
Hardiness zone
6b
More local growing data for Donnellson: nearby ZIP 62077 weather · frost dates · planting calendar · Illinois frost dates
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Climate data from the nearest NOAA station, Hillsboro, Il (9 mi from Donnellson). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.