Harman US

Columbia, IL Weather & Growing Conditions

Overnight
73°F
Partly Cloudy
Partly cloudy, with a low around 73. South wind around 5 mph.

7-day forecast

WhenTempForecastWindPrecip
Overnight 73°F Partly Cloudy 5 mph S 7%
Saturday 98°F Mostly Sunny 3 to 7 mph SW 6%
Saturday Night 74°F Partly Cloudy 5 mph S 0%
Sunday 95°F Mostly Sunny then Slight Chance Showers And Thunderstorms 6 mph W 16%
Sunday Night 68°F Chance Showers And Thunderstorms 6 mph N 54%
Monday 82°F Showers And Thunderstorms Likely 5 to 9 mph N 67%
Monday Night 61°F Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms 6 to 9 mph N 67%
Tuesday 72°F Slight Chance Rain Showers then Mostly Cloudy 10 mph N 22%
Tuesday Night 55°F Mostly Cloudy 5 to 10 mph N 6%
Wednesday 75°F Mostly Sunny 8 mph N 2%
Wednesday Night 56°F Partly Cloudy 2 to 7 mph N 1%
Thursday 75°F Mostly Sunny 3 to 7 mph N 3%
Thursday Night 58°F Partly Cloudy 6 mph N 3%
Friday 77°F Mostly Sunny 3 to 7 mph N 6%

Forecast source: National Weather Service (api.weather.gov). Updated through the day.

Growing snapshot for Columbia, IL

Last spring frost
Apr 6
First fall frost
Oct 27
Growing season
203 days
Hardiness zone
7a

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

Climate data from the nearest NOAA station, Cahokia, Il (9.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.