Harman US

Valmeyer, IL Weather & Growing Conditions

Today
99°F
Mostly Sunny
Mostly sunny, with a high near 99. Heat index values as high as 105. Southwest wind around 6 mph.

7-day forecast

WhenTempForecastWindPrecip
Today 99°F Mostly Sunny 6 mph SW 2%
Tonight 72°F Partly Cloudy 5 mph S 4%
Sunday 95°F Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms 5 mph W 22%
Sunday Night 67°F Slight Chance Showers And Thunderstorms then Showers And Thunderstorms Likely 6 mph N 56%
Monday 81°F Showers And Thunderstorms Likely 3 to 8 mph N 66%
Monday Night 59°F Showers And Thunderstorms Likely 5 to 9 mph N 66%
Tuesday 73°F Chance Rain Showers then Partly Sunny 9 mph N 25%
Tuesday Night 54°F Mostly Cloudy 3 to 9 mph N 7%
Wednesday 75°F Mostly Sunny 5 to 8 mph N 2%
Wednesday Night 54°F Partly Cloudy 2 to 7 mph N 1%
Thursday 77°F Mostly Sunny 2 to 6 mph N 2%
Thursday Night 57°F Partly Cloudy 1 to 5 mph NE 4%
Friday 78°F Partly Sunny 2 to 6 mph NE 7%
Friday Night 57°F Partly Cloudy 5 mph NE 6%

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

Growing snapshot for Valmeyer, IL

Last spring frost
Apr 9
First fall frost
Oct 26
Growing season
197 days
Hardiness zone
7a

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

Climate data from the nearest NOAA station, Festus, Mo (5.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.