Donovan, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Donovan, a village in Iroquois County, Illinois.
Tonight
63°F
Mostly Cloudy then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 63. East southeast wind 5 to 10 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Donovan
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 63°F | Mostly Cloudy then Slight Chance Showers And Thunderstorms | 5 to 10 mph ESE | 19% |
| Saturday | 82°F | Showers And Thunderstorms Likely | 5 to 10 mph SE | 60% |
| Saturday Night | 68°F | Chance Showers And Thunderstorms | 5 mph SW | 67% |
| Sunday | 75°F | Showers And Thunderstorms Likely | 5 to 10 mph N | 68% |
| Sunday Night | 55°F | Showers And Thunderstorms Likely | 10 mph NE | 66% |
| Monday | 66°F | Showers And Thunderstorms Likely | 10 mph ENE | 64% |
| Monday Night | 50°F | Chance Showers And Thunderstorms | 10 mph NE | 42% |
| Tuesday | 66°F | Slight Chance Rain Showers | 10 mph NE | 22% |
| Tuesday Night | 50°F | Slight Chance Rain Showers then Mostly Cloudy | 5 to 10 mph NNE | 18% |
| Wednesday | 68°F | Partly Sunny | 5 mph NNE | 7% |
| Wednesday Night | 51°F | Mostly Cloudy | 0 to 5 mph NNE | 7% |
| Thursday | 70°F | Partly Sunny | 0 to 5 mph NNE | 4% |
| Thursday Night | 52°F | Partly Cloudy | 0 to 5 mph NNE | 4% |
| Friday | 72°F | Mostly Sunny | 0 to 5 mph NNE | 3% |
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
Ashkum
Beaverville
Buckley
Cissna Park
Clifton
Crescent City
Danforth
Gilman
Iroquois
Loda
Martinton
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 Sep 19, 2026.