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

Hazardous Weather Conditions

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Overcast

65°F

18°C

Humidity 73%
Wind Speed N 3 mph
Barometer 29.95 in (1013.7 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 3 Apr 3:53 am CDT
Extended Forecast for

Valmeyer IL

  • Today

    Today: A slight chance of showers and thunderstorms before 9am, then a slight chance of showers between 9am and 10am, then a slight chance of showers and thunderstorms after 10am. Partly sunny, with a high near 82. South wind 5 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.

    High: 82 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2am. Some of the storms could produce heavy rainfall. Low around 58. South wind around 11 mph, with gusts as high as 24 mph. Chance of precipitation is 100%.

    Low: 58 °F

    Chance
    T-storms then
    Heavy Rain

  • Saturday

    Saturday: Showers and possibly a thunderstorm before 1pm, then a slight chance of showers between 1pm and 4pm. Some of the storms could produce heavy rainfall. Temperature falling to around 57 by 1pm. West wind 9 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 90%.

    High: 63 °F⇓

    Heavy Rain
    then Chance
    Showers

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 40. Northwest wind 6 to 11 mph, with gusts as high as 21 mph.

    Low: 40 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 61. Northwest wind 6 to 10 mph.

    High: 61 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 39.

    Low: 39 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 63.

    High: 63 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 36.

    Low: 36 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 56.

    High: 56 °F

    Mostly Sunny

Detailed Forecast

Today
A slight chance of showers and thunderstorms before 9am, then a slight chance of showers between 9am and 10am, then a slight chance of showers and thunderstorms after 10am. Partly sunny, with a high near 82. South wind 5 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.
Tonight
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2am. Some of the storms could produce heavy rainfall. Low around 58. South wind around 11 mph, with gusts as high as 24 mph. Chance of precipitation is 100%.
Saturday
Showers and possibly a thunderstorm before 1pm, then a slight chance of showers between 1pm and 4pm. Some of the storms could produce heavy rainfall. Temperature falling to around 57 by 1pm. West wind 9 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 90%.
Saturday Night
Partly cloudy, with a low around 40. Northwest wind 6 to 11 mph, with gusts as high as 21 mph.
Sunday
Sunny, with a high near 61. Northwest wind 6 to 10 mph.
Sunday Night
Clear, with a low around 39.
Monday
Sunny, with a high near 63.
Monday Night
Partly cloudy, with a low around 36.
Tuesday
Mostly sunny, with a high near 56.
Tuesday Night
Partly cloudy, with a low around 39.
Wednesday
Partly sunny, with a high near 72.
Wednesday Night
Partly cloudy, with a low around 52.
Thursday
A 20 percent chance of showers. Mostly sunny, with a high near 77.
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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:
4:51 am CDT Apr 3, 2026
Forecast Valid:
6am CDT Apr 3, 2026-6pm CDT Apr 9, 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