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.

Fair

63°F

17°C

Humidity 40%
Wind Speed S 10 mph
Barometer 29.99 in (1015.6 mb)
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Last update 16 Feb 2:53 pm CST
Extended Forecast for

4 Miles NNE Valmeyer IL

  • Tonight

    Tonight: Partly cloudy, with a low around 43. South wind 5 to 7 mph.

    Low: 43 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 67. South wind 6 to 15 mph, with gusts as high as 26 mph.

    High: 67 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms after 5am. Cloudy during the early evening, then gradual clearing, with a low around 57. South wind 14 to 18 mph, with gusts as high as 30 mph.

    Low: 57 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Wednesday

    Wednesday: Sunny, with a high near 74. West wind 7 to 14 mph, with gusts as high as 25 mph.

    High: 74 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 48. South wind 3 to 5 mph.

    Low: 48 °F

    Mostly Clear

  • Thursday

    Thursday: A 40 percent chance of showers. Mostly sunny, with a high near 75.

    High: 75 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A 20 percent chance of showers before midnight. Mostly clear, with a low around 38.

    Low: 38 °F

    Slight Chance
    Showers then
    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 53.

    High: 53 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 32.

    Low: 32 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 43. South wind 5 to 7 mph.
Tuesday
Mostly cloudy, with a high near 67. South wind 6 to 15 mph, with gusts as high as 26 mph.
Tuesday Night
A 20 percent chance of showers and thunderstorms after 5am. Cloudy during the early evening, then gradual clearing, with a low around 57. South wind 14 to 18 mph, with gusts as high as 30 mph.
Wednesday
Sunny, with a high near 74. West wind 7 to 14 mph, with gusts as high as 25 mph.
Wednesday Night
Mostly clear, with a low around 48. South wind 3 to 5 mph.
Thursday
A 40 percent chance of showers. Mostly sunny, with a high near 75.
Thursday Night
A 20 percent chance of showers before midnight. Mostly clear, with a low around 38.
Friday
Mostly sunny, with a high near 53.
Friday Night
Partly cloudy, with a low around 32.
Saturday
Mostly sunny, with a high near 50.
Saturday Night
A 20 percent chance of rain. Partly cloudy, with a low around 29.
Sunday
Sunny, with a high near 44.
Sunday Night
Mostly clear, with a low around 22.
Monday
Mostly sunny, with a high near 44.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NNE Valmeyer IL
 38.35°N 90.27°W (Elev. 397 ft)
Last Update:
2:41 pm CST Feb 16, 2026
Forecast Valid:
3pm CST Feb 16, 2026-6pm CST Feb 23, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation