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

31°F

-1°C

Humidity 72%
Wind Speed Calm
Barometer 29.92 in (1013.6 mb)
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Last update 5 Feb 8:53 pm CST
Extended Forecast for

3 Miles SSE Belleville IL

  • Tonight

    Tonight: Partly cloudy, with a low around 30. South wind 5 to 8 mph becoming west after midnight.

    Low: 30 °F

    Partly Cloudy

  • Friday

    Friday: Increasing clouds, with a high near 46. West wind 9 to 15 mph becoming northwest in the morning. Winds could gust as high as 25 mph.

    High: 46 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: Partly cloudy, with a low around 23. Northwest wind 6 to 10 mph, with gusts as high as 20 mph.

    Low: 23 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 36. Northeast wind around 5 mph becoming southeast in the afternoon.

    High: 36 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 25. Southeast wind 5 to 7 mph.

    Low: 25 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 52.

    High: 52 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 30.

    Low: 30 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 57.

    High: 57 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 40.

    Low: 40 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 30. South wind 5 to 8 mph becoming west after midnight.
Friday
Increasing clouds, with a high near 46. West wind 9 to 15 mph becoming northwest in the morning. Winds could gust as high as 25 mph.
Friday Night
Partly cloudy, with a low around 23. Northwest wind 6 to 10 mph, with gusts as high as 20 mph.
Saturday
Sunny, with a high near 36. Northeast wind around 5 mph becoming southeast in the afternoon.
Saturday Night
Mostly cloudy, with a low around 25. Southeast wind 5 to 7 mph.
Sunday
Mostly sunny, with a high near 52.
Sunday Night
Mostly clear, with a low around 30.
Monday
Sunny, with a high near 57.
Monday Night
Mostly clear, with a low around 40.
Tuesday
A 20 percent chance of rain after noon. Partly sunny, with a high near 64.
Tuesday Night
A 40 percent chance of rain. Cloudy, with a low around 44.
Wednesday
A 30 percent chance of rain. Mostly cloudy, with a high near 55.
Wednesday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 37.
Thursday
A 30 percent chance of rain. Mostly cloudy, with a high near 49.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE Belleville IL
 38.5°N 89.98°W (Elev. 495 ft)
Last Update:
9:21 pm CST Feb 5, 2026
Forecast Valid:
9pm CST Feb 5, 2026-6pm CST Feb 12, 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