Dover, IL Weather & Growing Conditions

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

This Afternoon

70°F

Showers And Thunderstorms

Showers and thunderstorms. Mostly cloudy. High near 70, with temperatures falling to around 68 in the afternoon. South wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%.

7-day forecast for Dover

When	Temp	Forecast	Wind	Precip
This Afternoon	70°F	Showers And Thunderstorms	15 mph S	93%
Tonight	53°F	Showers And Thunderstorms	15 mph S	90%
Wednesday	58°F	Chance Rain Showers then Mostly Cloudy	15 mph SW	27%
Wednesday Night	45°F	Slight Chance Rain Showers then Mostly Cloudy	10 to 15 mph SW	18%
Thursday	55°F	Chance Rain Showers	10 to 15 mph SW	41%
Thursday Night	43°F	Chance Rain Showers	5 to 10 mph NW	35%
Friday	52°F	Slight Chance Rain Showers then Partly Sunny	10 mph N	17%
Friday Night	34°F	Partly Cloudy	0 to 5 mph NW	1%
Saturday	51°F	Mostly Sunny	0 to 5 mph W	3%
Saturday Night	34°F	Partly Cloudy	0 to 5 mph W	3%
Sunday	57°F	Sunny	5 to 10 mph W	13%
Sunday Night	35°F	Mostly Clear	5 mph W	4%
Monday	62°F	Sunny	5 to 10 mph SW	2%
Monday Night	40°F	Mostly Clear	5 mph W	1%

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 Nov 4, 2026.