National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

A Few Clouds

24°F

-4°C

Humidity 60%
Wind Speed NE 3 mph
Barometer 30.28 in (1025.8 mb)
Dewpoint 12°F (-11°C)
Visibility 10.00 mi
Last update 29 Jan 1:53 am CST
Extended Forecast for

Valmeyer IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 14. Light northeast wind.

    Low: 14 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 20 percent chance of snow after 5pm. Mostly cloudy, with a high near 27. Northeast wind 3 to 7 mph.

    High: 27 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Thursday Night

    Thursday Night: Snow likely, mainly before 8pm. Mostly cloudy, with a low around 9. North wind around 6 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    Low: 9 °F

    Snow Likely
    then Slight
    Chance Snow

  • Friday

    Friday: Partly sunny and cold, with a high near 20. North wind 5 to 9 mph.

    High: 20 °F

    Cold

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 5. North wind around 8 mph.

    Low: 5 °F

    Mostly Cloudy

  • Saturday

    Saturday: Sunny and cold, with a high near 20.

    High: 20 °F

    Cold

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 1.

    Low: 1 °F

    Mostly Clear

  • Sunday

    Sunday: Partly sunny, with a high near 31.

    High: 31 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 19.

    Low: 19 °F

    Slight Chance
    Snow then
    Mostly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 14. Light northeast wind.
Thursday
A 20 percent chance of snow after 5pm. Mostly cloudy, with a high near 27. Northeast wind 3 to 7 mph.
Thursday Night
Snow likely, mainly before 8pm. Mostly cloudy, with a low around 9. North wind around 6 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Friday
Partly sunny and cold, with a high near 20. North wind 5 to 9 mph.
Friday Night
Mostly cloudy, with a low around 5. North wind around 8 mph.
Saturday
Sunny and cold, with a high near 20.
Saturday Night
Mostly clear, with a low around 1.
Sunday
Partly sunny, with a high near 31.
Sunday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 19.
Monday
Partly sunny, with a high near 37.
Monday Night
Mostly cloudy, with a low around 22.
Tuesday
Mostly cloudy, with a high near 39.
Tuesday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 24.
Wednesday
A 30 percent chance of snow. Mostly cloudy, with a high near 37.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Valmeyer IL
 38.31°N 90.3°W (Elev. 397 ft)
Last Update:
2:36 am CST Jan 29, 2026
Forecast Valid:
2am CST Jan 29, 2026-6pm CST Feb 4, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation