Harman US

Caledonia, IL Weather & Growing Conditions

Today
75°F
Showers And Thunderstorms then Showers And Thunderstorms Likely
Showers and thunderstorms before noon, then showers and thunderstorms likely between noon 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

WhenTempForecastWindPrecip
Today 75°F Showers And Thunderstorms then Showers And Thunderstorms Likely 5 to 10 mph SSE 100%
Tonight 60°F Showers And Thunderstorms 5 to 10 mph E 93%
Sunday 67°F Chance Showers And Thunderstorms 10 to 15 mph NE 50%
Sunday Night 54°F Slight Chance Rain Showers 15 mph NE 16%
Monday 62°F Chance Rain Showers 15 mph ENE 30%
Monday Night 48°F Slight Chance Rain Showers 10 to 15 mph NE 16%
Tuesday 61°F Slight Chance Rain Showers then Partly Sunny 10 to 15 mph NE 15%
Tuesday Night 47°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 69°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). Updated through the day.

Growing snapshot for Caledonia, IL

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

Explore more for Caledonia, IL: full frost dates · planting calendar · Illinois frost dates

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