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

38°F

3°C

Humidity 57%
Wind Speed SW 5 mph
Barometer 29.90 in (1012.8 mb)
Dewpoint 24°F (-4°C)
Visibility 10.00 mi
Wind Chill34°F (1°C)
Last update 5 Dec 9:53 pm CST
Extended Forecast for

3 Miles SSE Belleville IL

  • Tonight

    Tonight: Cloudy, with a low around 28. Southwest wind around 7 mph.

    Low: 28 °F

    Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 41. Light and variable wind becoming southeast around 6 mph in the afternoon.

    High: 41 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of rain, mainly after 5am. Cloudy, with a low around 32. South wind 7 to 9 mph, with gusts as high as 21 mph.

    Low: 32 °F

    Mostly Cloudy
    then Chance
    Rain

  • Sunday

    Sunday: A slight chance of rain before 3pm, then a slight chance of snow. Mostly cloudy, with a high near 41. South wind 5 to 10 mph becoming north in the afternoon. Chance of precipitation is 20%.

    High: 41 °F

    Slight Chance
    Rain then
    Slight Chance
    Rain/Snow

  • Sunday Night

    Sunday Night: A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 20. North wind 6 to 10 mph.

    Low: 20 °F

    Chance Snow
    then Mostly
    Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 33.

    High: 33 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 23.

    Low: 23 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 49.

    High: 49 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 39.

    Low: 39 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Cloudy, with a low around 28. Southwest wind around 7 mph.
Saturday
Partly sunny, with a high near 41. Light and variable wind becoming southeast around 6 mph in the afternoon.
Saturday Night
A 30 percent chance of rain, mainly after 5am. Cloudy, with a low around 32. South wind 7 to 9 mph, with gusts as high as 21 mph.
Sunday
A slight chance of rain before 3pm, then a slight chance of snow. Mostly cloudy, with a high near 41. South wind 5 to 10 mph becoming north in the afternoon. Chance of precipitation is 20%.
Sunday Night
A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 20. North wind 6 to 10 mph.
Monday
Mostly sunny, with a high near 33.
Monday Night
Partly cloudy, with a low around 23.
Tuesday
Mostly sunny, with a high near 49.
Tuesday Night
Mostly cloudy, with a low around 39.
Wednesday
A 30 percent chance of rain, mainly after noon. Partly sunny, with a high near 48.
Wednesday Night
Mostly cloudy, with a low around 27.
Thursday
Mostly cloudy, with a high near 42.
Thursday Night
Mostly cloudy, with a low around 24.
Friday
Mostly sunny, with a high near 33.
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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:
10:01 pm CST Dec 5, 2025
Forecast Valid:
10pm CST Dec 5, 2025-6pm CST Dec 12, 2025
 
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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