Harman US

Belle Prairie City, IL Weather & Growing Conditions

This Afternoon
98°F
Mostly Sunny
Mostly sunny. High near 98, with temperatures falling to around 96 in the afternoon. West southwest wind around 7 mph.

7-day forecast

WhenTempForecastWindPrecip
This Afternoon 98°F Mostly Sunny 7 mph WSW 2%
Tonight 72°F Partly Cloudy 1 to 6 mph SSW 2%
Sunday 96°F Mostly Sunny 5 to 8 mph WSW 3%
Sunday Night 67°F Partly Cloudy then Chance Showers And Thunderstorms 7 mph N 40%
Monday 86°F Chance Showers And Thunderstorms then Showers And Thunderstorms Likely 5 to 10 mph NE 56%
Monday Night 60°F Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms 5 to 10 mph NNE 56%
Tuesday 76°F Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms 6 to 13 mph NNE 53%
Tuesday Night 56°F Partly Cloudy 5 to 14 mph N 4%
Wednesday 76°F Mostly Sunny 6 to 10 mph N 3%
Wednesday Night 55°F Partly Cloudy 2 to 10 mph N 1%
Thursday 77°F Mostly Sunny 2 to 8 mph N 0%
Thursday Night 57°F Partly Cloudy 1 to 6 mph NNE 0%
Friday 79°F Partly Sunny 2 to 9 mph NNE 7%
Friday Night 56°F Partly Cloudy 2 to 7 mph NNE 7%

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

Growing snapshot for Belle Prairie City, IL

Last spring frost
Apr 11
First fall frost
Oct 21
Growing season
190 days
Hardiness zone
6b

Explore more for Belle Prairie City, IL: full frost dates · planting calendar · Illinois frost dates

Climate data from the nearest NOAA station, Mcleansboro, Il (8.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.