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.

Fair

50°F

10°C

Humidity 43%
Wind Speed SE 9 mph
Barometer 30.03 in (1017.2 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill46°F (8°C)
Last update 12 Mar 6:53 pm CDT
Extended Forecast for

3 Miles ENE Valmeyer IL

  • Tonight

    Tonight: Partly cloudy, with a low around 44. Southwest wind 7 to 17 mph, with gusts as high as 29 mph.

    Low: 44 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 62. West wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 62 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 36. Northwest wind around 6 mph becoming calm.

    Low: 36 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 66. Southeast wind 6 to 11 mph.

    High: 66 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 54. South wind 9 to 14 mph, with gusts as high as 23 mph.

    Low: 54 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of rain and thunderstorms, then rain and possibly a thunderstorm after 1pm. High near 69. Breezy. Chance of precipitation is 90%.

    High: 69 °F

    Breezy.
    Chance Rain
    then Rain

  • Sunday Night

    Sunday Night: Rain and snow before 1am, then a chance of snow. Some thunder is also possible. Low around 22. Breezy. Chance of precipitation is 80%.

    Low: 22 °F

    Rain/Snow and
    Breezy

  • Monday

    Monday: Partly sunny, with a high near 30. Blustery.

    High: 30 °F

    Partly Sunny
    and Blustery

  • Monday Night

    Monday Night: Mostly clear, with a low around 14.

    Low: 14 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 44. Southwest wind 7 to 17 mph, with gusts as high as 29 mph.
Friday
Mostly sunny, with a high near 62. West wind 10 to 15 mph, with gusts as high as 25 mph.
Friday Night
Partly cloudy, with a low around 36. Northwest wind around 6 mph becoming calm.
Saturday
Partly sunny, with a high near 66. Southeast wind 6 to 11 mph.
Saturday Night
Mostly cloudy, with a low around 54. South wind 9 to 14 mph, with gusts as high as 23 mph.
Sunday
A chance of rain and thunderstorms, then rain and possibly a thunderstorm after 1pm. High near 69. Breezy. Chance of precipitation is 90%.
Sunday Night
Rain and snow before 1am, then a chance of snow. Some thunder is also possible. Low around 22. Breezy. Chance of precipitation is 80%.
Monday
Partly sunny, with a high near 30. Blustery.
Monday Night
Mostly clear, with a low around 14.
Tuesday
Mostly sunny, with a high near 37.
Tuesday Night
A slight chance of rain and snow. Mostly cloudy, with a low around 28. Chance of precipitation is 20%.
Wednesday
Partly sunny, with a high near 58.
Wednesday Night
Partly cloudy, with a low around 39.
Thursday
Sunny, with a high near 69.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ENE Valmeyer IL
 38.33°N 90.27°W (Elev. 459 ft)
Last Update:
7:26 pm CDT Mar 12, 2026
Forecast Valid:
7pm CDT Mar 12, 2026-6pm CDT Mar 19, 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