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Donovan, IL Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Donovan, a village in Iroquois County, Illinois.

Today
81°F
Showers And Thunderstorms then Chance Showers And Thunderstorms
Showers and thunderstorms before noon, then a chance of showers and thunderstorms. Cloudy, with a high near 81. Southeast wind around 5 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

7-day forecast for Donovan

WhenTempForecastWindPrecip
Today 81°F Showers And Thunderstorms then Chance Showers And Thunderstorms 5 mph SE 84%
Tonight 65°F Showers And Thunderstorms Likely 0 to 5 mph SSW 60%
Sunday 73°F Chance Showers And Thunderstorms then Showers And Thunderstorms 0 to 10 mph N 75%
Sunday Night 55°F Chance Showers And Thunderstorms 10 mph NE 49%
Monday 66°F Showers And Thunderstorms Likely 10 mph ENE 58%
Monday Night 50°F Chance Rain Showers 10 mph NE 42%
Tuesday 65°F Slight Chance Rain Showers 10 mph NE 21%
Tuesday Night 50°F Slight Chance Rain Showers then Mostly Cloudy 5 to 10 mph NNE 21%
Wednesday 67°F Partly Sunny 5 to 10 mph NNE 6%
Wednesday Night 51°F Mostly Cloudy 5 mph NNE 3%
Thursday 69°F Partly Sunny 5 mph NNE 2%
Thursday Night 52°F Mostly Cloudy 0 to 5 mph NNE 2%
Friday 72°F Mostly Sunny 0 to 5 mph NE 2%
Friday Night 51°F Partly Cloudy 0 to 5 mph NE 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

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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.