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

73°F

23°C

Humidity 53%
Wind Speed S 12 mph
Barometer 29.90 in (1012.0 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 30 Mar 10:53 pm CDT
Extended Forecast for

Valmeyer IL

  • Tonight

    Tonight: Partly cloudy, with a low around 64. South wind 10 to 13 mph, with gusts as high as 21 mph.

    Low: 64 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A slight chance of rain and thunderstorms before 10am, then a slight chance of rain and thunderstorms after 5pm. Partly sunny, with a high near 86. South wind 10 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.

    High: 86 °F

    Slight Chance
    T-storms then
    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A chance of rain and thunderstorms, then rain likely after 3am. Increasing clouds, with a low around 61. South wind 6 to 10 mph. Chance of precipitation is 60%.

    Low: 61 °F

    Chance
    T-storms then
    Rain Likely

  • Wednesday

    Wednesday: A chance of rain and thunderstorms before 7am, then rain and possibly a thunderstorm between 7am and 1pm, then rain likely after 1pm. High near 77. South wind 5 to 9 mph. Chance of precipitation is 80%.

    High: 77 °F

    Rain

  • Wednesday Night

    Wednesday Night: A chance of rain and thunderstorms before 10pm, then a chance of rain between 10pm and 4am, then a chance of rain and thunderstorms after 4am. Mostly cloudy, with a low around 64. Southeast wind 9 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 50%.

    Low: 64 °F

    Chance Rain

  • Thursday

    Thursday: A chance of rain and thunderstorms, then rain and possibly a thunderstorm after 1pm. High near 80. Chance of precipitation is 80%.

    High: 80 °F

    Chance
    T-storms then
    Rain

  • Thursday Night

    Thursday Night: Rain and possibly a thunderstorm before 1am, then rain likely. Low around 60. Chance of precipitation is 80%.

    Low: 60 °F

    Rain

  • Friday

    Friday: A 50 percent chance of rain. Partly sunny, with a high near 82.

    High: 82 °F

    Chance Rain

  • Friday Night

    Friday Night: A chance of rain and thunderstorms, then rain likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 59. Chance of precipitation is 60%.

    Low: 59 °F

    Rain Likely

Detailed Forecast

Tonight
Partly cloudy, with a low around 64. South wind 10 to 13 mph, with gusts as high as 21 mph.
Tuesday
A slight chance of rain and thunderstorms before 10am, then a slight chance of rain and thunderstorms after 5pm. Partly sunny, with a high near 86. South wind 10 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.
Tuesday Night
A chance of rain and thunderstorms, then rain likely after 3am. Increasing clouds, with a low around 61. South wind 6 to 10 mph. Chance of precipitation is 60%.
Wednesday
A chance of rain and thunderstorms before 7am, then rain and possibly a thunderstorm between 7am and 1pm, then rain likely after 1pm. High near 77. South wind 5 to 9 mph. Chance of precipitation is 80%.
Wednesday Night
A chance of rain and thunderstorms before 10pm, then a chance of rain between 10pm and 4am, then a chance of rain and thunderstorms after 4am. Mostly cloudy, with a low around 64. Southeast wind 9 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 50%.
Thursday
A chance of rain and thunderstorms, then rain and possibly a thunderstorm after 1pm. High near 80. Chance of precipitation is 80%.
Thursday Night
Rain and possibly a thunderstorm before 1am, then rain likely. Low around 60. Chance of precipitation is 80%.
Friday
A 50 percent chance of rain. Partly sunny, with a high near 82.
Friday Night
A chance of rain and thunderstorms, then rain likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 59. Chance of precipitation is 60%.
Saturday
Rain likely and possibly a thunderstorm. Mostly cloudy, with a high near 70. Chance of precipitation is 60%.
Saturday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 41.
Sunday
A 20 percent chance of rain. Mostly sunny, with a high near 61.
Sunday Night
Mostly clear, with a low around 38.
Monday
Sunny, with a high near 65.
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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:
10:31 pm CDT Mar 30, 2026
Forecast Valid:
11pm CDT Mar 30, 2026-6pm CDT Apr 6, 2026
 
Forecast Discussion
 
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Additional Resources

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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