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.

Overcast

25°F

-4°C

Humidity 78%
Wind Speed N 10 mph
Barometer 30.33 in (1027.4 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill15°F (-9°C)
Last update 8 Dec 3:53 am CST
Extended Forecast for

Scott Air Force Base / Belleville IL

  • Today

    Today: Cloudy through mid morning, then gradual clearing, with a high near 35. North wind 5 to 7 mph becoming calm in the afternoon.

    High: 35 °F

    Gradual
    Clearing

  • Tonight

    Tonight: Increasing clouds, with a low around 26. Light and variable wind becoming south 5 to 10 mph in the evening.

    Low: 26 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Mostly sunny, with a high near 53. Southwest wind 10 to 14 mph.

    High: 53 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 45. South wind around 15 mph becoming west after midnight. Winds could gust as high as 29 mph.

    Low: 45 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a temperature falling to around 39 by 5pm. Northwest wind 10 to 18 mph, with gusts as high as 29 mph.

    High: 48 °F⇓

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 26.

    Low: 26 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 38.

    High: 38 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 23.

    Low: 23 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 35.

    High: 35 °F

    Partly Sunny

Detailed Forecast

Today
Cloudy through mid morning, then gradual clearing, with a high near 35. North wind 5 to 7 mph becoming calm in the afternoon.
Tonight
Increasing clouds, with a low around 26. Light and variable wind becoming south 5 to 10 mph in the evening.
Tuesday
Mostly sunny, with a high near 53. Southwest wind 10 to 14 mph.
Tuesday Night
Mostly cloudy, with a low around 45. South wind around 15 mph becoming west after midnight. Winds could gust as high as 29 mph.
Wednesday
Partly sunny, with a temperature falling to around 39 by 5pm. Northwest wind 10 to 18 mph, with gusts as high as 29 mph.
Wednesday Night
Mostly cloudy, with a low around 26.
Thursday
Mostly cloudy, with a high near 38.
Thursday Night
Mostly cloudy, with a low around 23.
Friday
Partly sunny, with a high near 35.
Friday Night
Mostly cloudy, with a low around 10.
Saturday
Partly sunny, with a high near 22.
Saturday Night
Mostly cloudy, with a low around 11.
Sunday
Mostly sunny, with a high near 30.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Scott Air Force Base / Belleville IL
 38.54°N 89.84°W (Elev. 417 ft)
Last Update:
4:01 am CST Dec 8, 2025
Forecast Valid:
4am CST Dec 8, 2025-6pm CST Dec 14, 2025
 
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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