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Caledonia, IL Weather & Growing Conditions

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

Today
75°F
Showers And Thunderstorms
Showers and thunderstorms before 1pm, then a chance of showers and thunderstorms between 1pm and 2pm, then showers and thunderstorms. Cloudy, with a high near 75. South southeast wind 5 to 10 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

7-day forecast for Caledonia

WhenTempForecastWindPrecip
Today 75°F Showers And Thunderstorms 5 to 10 mph SSE 95%
Tonight 60°F Showers And Thunderstorms 5 to 10 mph ENE 93%
Sunday 68°F Chance Showers And Thunderstorms 10 to 15 mph NNE 51%
Sunday Night 54°F Slight Chance Rain Showers 15 mph NE 17%
Monday 62°F Chance Rain Showers 15 mph ENE 31%
Monday Night 49°F Slight Chance Rain Showers 10 to 15 mph NE 17%
Tuesday 61°F Slight Chance Rain Showers then Partly Sunny 10 to 15 mph NE 15%
Tuesday Night 48°F Partly Cloudy 5 to 15 mph NE 9%
Wednesday 64°F Mostly Sunny 10 to 15 mph NE 3%
Wednesday Night 49°F Partly Cloudy 5 to 10 mph NE 1%
Thursday 66°F Mostly Sunny 5 to 10 mph NE 4%
Thursday Night 50°F Mostly Cloudy 0 to 5 mph NE 4%
Friday 70°F Partly Sunny 5 to 10 mph NE 3%
Friday Night 50°F Partly Cloudy 0 to 5 mph ENE 3%

Forecast source: National Weather Service (api.weather.gov) for Caledonia (42.369, -88.894). Updated through the day.

Growing snapshot for Caledonia

Last spring frost
May 1
First fall frost
Oct 12
Growing season
162 days
Hardiness zone
5b

More local growing data for Caledonia: nearby ZIP 61011 weather · frost dates · planting calendar · Illinois frost dates

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Climate data from the nearest NOAA station, Beloit, Wi (10.3 mi from Caledonia). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.