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Dover, IL Weather & Growing Conditions

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

Tonight
65°F
Mostly Cloudy then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 1am. Mostly cloudy. Low around 65, with temperatures rising to around 67 overnight. East wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. New rainfall amounts between a quarter and half of an inch possible.

7-day forecast for Dover

WhenTempForecastWindPrecip
Tonight 65°F Mostly Cloudy then Chance Showers And Thunderstorms 10 mph E 33%
Saturday 81°F Chance Showers And Thunderstorms then Showers And Thunderstorms Likely 5 to 10 mph SE 64%
Saturday Night 65°F Chance Showers And Thunderstorms then Showers And Thunderstorms 5 mph N 81%
Sunday 72°F Showers And Thunderstorms 10 to 15 mph NE 81%
Sunday Night 57°F Showers And Thunderstorms 15 mph NE 76%
Monday 65°F Showers And Thunderstorms Likely 15 mph NE 60%
Monday Night 52°F Chance Rain Showers 10 to 20 mph NE 42%
Tuesday 64°F Chance Rain Showers 15 mph NE 37%
Tuesday Night 50°F Mostly Cloudy 5 to 15 mph NE 6%
Wednesday 67°F Partly Sunny 10 mph NE 5%
Wednesday Night 52°F Partly Cloudy 5 to 10 mph NE 5%
Thursday 70°F Mostly Sunny 5 mph N 4%
Thursday Night 53°F Partly Cloudy 0 to 5 mph NE 5%
Friday 71°F Mostly Sunny 5 mph NE 5%

Forecast source: National Weather Service (api.weather.gov) for Dover (41.434, -89.396). Updated through the day.

Growing snapshot for Dover

Last spring frost
Apr 22
First fall frost
Oct 17
Growing season
177 days

More local growing data for Dover: nearby ZIP 61323 weather · frost dates · planting calendar · Illinois frost dates

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Climate data from the nearest NOAA station, Princeton, Il (5.6 mi from Dover). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.