Donovan, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Donovan, a village in Iroquois County, Illinois.
This Afternoon
65°F
Slight Chance Rain Showers
A slight chance of rain showers and a slight chance of drizzle. Cloudy. High near 65, with temperatures falling to around 56 in the afternoon. West southwest wind around 15 mph, with gusts as high as 25 mph.
7-day forecast for Donovan
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 65°F | Slight Chance Rain Showers | 15 mph WSW | 1% |
| Tonight | 46°F | Slight Chance Rain Showers then Cloudy | 10 mph SW | 7% |
| Thursday | 56°F | Mostly Cloudy then Chance Rain | 5 to 10 mph WSW | 36% |
| Thursday Night | 39°F | Rain Likely then Cloudy | 5 mph WNW | 69% |
| Friday | 50°F | Partly Sunny | 5 to 10 mph NNW | 7% |
| Friday Night | 32°F | Partly Cloudy | 0 to 5 mph NNW | 2% |
| Saturday | 52°F | Sunny | 0 to 5 mph NW | 1% |
| Saturday Night | 29°F | Mostly Clear | 0 mph | 0% |
| Sunday | 58°F | Sunny | 0 to 5 mph W | 1% |
| Sunday Night | 32°F | Mostly Clear | 0 mph | 0% |
| Monday | 62°F | Sunny | 0 to 5 mph SW | 0% |
| Monday Night | 38°F | Clear | 0 to 5 mph SW | 0% |
| Tuesday | 63°F | Sunny | 0 to 5 mph WNW | 0% |
| Tuesday Night | 36°F | Mostly Clear | 0 mph | 2% |
Forecast source: National Weather Service (api.weather.gov) for Donovan (40.885, -87.614). Updated through the day.
Growing snapshot for Donovan
Last spring frost
Apr 24
First fall frost
Oct 16
Growing season
174 days
Hardiness zone
5b
More local growing data for Donovan: nearby ZIP 60931 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
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Cissna Park
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Gilman
Iroquois
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Milford
Onarga
Papineau
Sheldon
Thawville
Watseka
Wellington
Woodland
Climate data from the nearest NOAA station, Watseka 2 Nw, Il (10.9 mi from Donovan). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 5, 2026.