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

30°F

-1°C

Humidity 66%
Wind Speed N 10 mph
Barometer 30.30 in (1026.4 mb)
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Wind Chill21°F (-6°C)
Last update 4 Feb 12:53 am CST
Extended Forecast for

3 Miles S Scott Air Force Base / Belleville IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 21. North wind 3 to 6 mph.

    Low: 21 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 31. North wind 5 to 9 mph.

    High: 31 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 15. North wind around 6 mph becoming calm in the evening.

    Low: 15 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 39. Calm wind becoming south 5 to 9 mph in the morning.

    High: 39 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 30. South wind 5 to 7 mph becoming west after midnight.

    Low: 30 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 49.

    High: 49 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 25.

    Low: 25 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 41.

    High: 41 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 29.

    Low: 29 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 21. North wind 3 to 6 mph.
Wednesday
Partly sunny, with a high near 31. North wind 5 to 9 mph.
Wednesday Night
Partly cloudy, with a low around 15. North wind around 6 mph becoming calm in the evening.
Thursday
Partly sunny, with a high near 39. Calm wind becoming south 5 to 9 mph in the morning.
Thursday Night
Partly cloudy, with a low around 30. South wind 5 to 7 mph becoming west after midnight.
Friday
Mostly sunny, with a high near 49.
Friday Night
Partly cloudy, with a low around 25.
Saturday
Sunny, with a high near 41.
Saturday Night
Partly cloudy, with a low around 29.
Sunday
Mostly sunny, with a high near 51.
Sunday Night
Partly cloudy, with a low around 28.
Monday
Mostly sunny, with a high near 50.
Monday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 37.
Tuesday
A 20 percent chance of rain. Partly sunny, with a high near 59.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles S Scott Air Force Base / Belleville IL
 38.52°N 89.87°W (Elev. 436 ft)
Last Update:
12:26 am CST Feb 4, 2026
Forecast Valid:
1am CST Feb 4, 2026-6pm CST Feb 10, 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