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

61°F

16°C

Humidity 90%
Wind Speed S 6 mph
Barometer 29.76 in (1007.6 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 26 Dec 2:53 am CST
Extended Forecast for

Valmeyer IL

  • Overnight

    Overnight: Mostly clear, with a low around 59. South wind around 7 mph.

    Low: 59 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 71. Southwest wind 5 to 8 mph becoming north in the afternoon.

    High: 71 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 46. Light and variable wind.

    Low: 46 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 70. Light southeast wind increasing to 5 to 9 mph in the morning.

    High: 70 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of rain after midnight. Cloudy, with a low around 62. South wind 6 to 9 mph.

    Low: 62 °F

    Cloudy then
    Slight Chance
    Rain

  • Sunday

    Sunday: Rain, with thunderstorms also possible after 3pm. High near 73. Chance of precipitation is 80%.

    High: 73 °F

    Chance Rain
    then Rain

  • Sunday Night

    Sunday Night: Rain likely before midnight, then a slight chance of rain and snow between midnight and 3am, then a slight chance of snow after 3am. Mostly cloudy, with a low around 21. Chance of precipitation is 60%.

    Low: 21 °F

    Rain Likely
    then Slight
    Chance
    Rain/Snow

  • Monday

    Monday: Sunny, with a high near 30.

    High: 30 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 19.

    Low: 19 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 59. South wind around 7 mph.
Friday
Mostly sunny, with a high near 71. Southwest wind 5 to 8 mph becoming north in the afternoon.
Friday Night
Mostly cloudy, with a low around 46. Light and variable wind.
Saturday
Partly sunny, with a high near 70. Light southeast wind increasing to 5 to 9 mph in the morning.
Saturday Night
A 20 percent chance of rain after midnight. Cloudy, with a low around 62. South wind 6 to 9 mph.
Sunday
Rain, with thunderstorms also possible after 3pm. High near 73. Chance of precipitation is 80%.
Sunday Night
Rain likely before midnight, then a slight chance of rain and snow between midnight and 3am, then a slight chance of snow after 3am. Mostly cloudy, with a low around 21. Chance of precipitation is 60%.
Monday
Sunny, with a high near 30.
Monday Night
Mostly clear, with a low around 19.
Tuesday
Sunny, with a high near 39.
Tuesday Night
Partly cloudy, with a low around 26.
Wednesday
Mostly sunny, with a high near 43.
Wednesday Night
Partly cloudy, with a low around 22.
New Year's Day
Partly sunny, with a high near 38.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Valmeyer IL
 38.31°N 90.3°W (Elev. 397 ft)
Last Update:
3:15 am CST Dec 26, 2025
Forecast Valid:
3am CST Dec 26, 2025-6pm CST Jan 1, 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