Hanover, IL Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Hanover, a village in Jo Daviess County, Illinois.

This Afternoon

71°F

Chance Showers And Thunderstorms

A chance of showers and thunderstorms before 3pm, then a slight chance of showers and thunderstorms. Partly sunny, with a high near 71. Southeast wind around 10 mph. Chance of precipitation is 30%.

7-day forecast for Hanover

When	Temp	Forecast	Wind	Precip
This Afternoon	71°F	Chance Showers And Thunderstorms	10 mph SE	29%
Tonight	63°F	Chance Showers And Thunderstorms	5 to 10 mph SE	88%
Saturday	79°F	Showers And Thunderstorms	5 mph SE	78%
Saturday Night	61°F	Showers And Thunderstorms	5 to 10 mph N	78%
Sunday	68°F	Rain Showers Likely	10 to 15 mph NE	64%
Sunday Night	54°F	Chance Rain Showers	10 to 15 mph NE	54%
Monday	64°F	Chance Rain Showers	15 mph NE	46%
Monday Night	50°F	Chance Rain Showers	10 to 15 mph NE	46%
Tuesday	63°F	Chance Rain Showers	10 mph NE	39%
Tuesday Night	47°F	Partly Cloudy	5 to 10 mph NE	8%
Wednesday	67°F	Mostly Sunny	5 mph NE	3%
Wednesday Night	50°F	Partly Cloudy	0 to 5 mph NE	2%
Thursday	69°F	Mostly Sunny	5 mph NE	5%
Thursday Night	52°F	Partly Cloudy	0 mph	5%

Forecast source: National Weather Service (api.weather.gov) for Hanover (42.255, -90.274). Updated through the day.

Growing snapshot for Hanover

Last spring frost

May 1

First fall frost

Oct 9

Growing season

160 days

Hardiness zone

More local growing data for Hanover: nearby ZIP 61041 weather · frost dates · planting calendar · Illinois frost dates

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Climate data from the nearest NOAA station, Elizabeth, Il (5.2 mi from Hanover). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.