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

39°F

4°C

Humidity 86%
Wind Speed S 5 mph
Barometer 29.93 in (1013.6 mb)
Dewpoint 35°F (2°C)
Visibility 8.00 mi
Wind Chill35°F (2°C)
Last update 7 Dec 4:53 am CST
Extended Forecast for

Scott Air Force Base / Belleville IL

  • Overnight

    Overnight: A chance of sprinkles. Cloudy, with a low around 37. South wind around 5 mph.

    Low: 37 °F

    Chance
    Sprinkles

  • Sunday

    Sunday: A chance of sprinkles before 11am. Cloudy, with a high near 42. Light and variable wind becoming north 8 to 13 mph in the morning. Winds could gust as high as 21 mph.

    High: 42 °F

    Chance
    Sprinkles

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 24. North wind 7 to 13 mph, with gusts as high as 21 mph.

    Low: 24 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, then gradually becoming sunny, with a high near 35. North wind around 5 mph becoming calm in the morning.

    High: 35 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: Partly cloudy, with a low around 26. Light southeast wind becoming south 5 to 10 mph in the evening.

    Low: 26 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 53.

    High: 53 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 41.

    Low: 41 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 49.

    High: 49 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A slight chance of rain before midnight, then a slight chance of rain and snow. Mostly cloudy, with a low around 28. Chance of precipitation is 20%.

    Low: 28 °F

    Slight Chance
    Rain then
    Slight Chance
    Rain/Snow

Detailed Forecast

Overnight
A chance of sprinkles. Cloudy, with a low around 37. South wind around 5 mph.
Sunday
A chance of sprinkles before 11am. Cloudy, with a high near 42. Light and variable wind becoming north 8 to 13 mph in the morning. Winds could gust as high as 21 mph.
Sunday Night
Mostly cloudy, with a low around 24. North wind 7 to 13 mph, with gusts as high as 21 mph.
Monday
Mostly cloudy, then gradually becoming sunny, with a high near 35. North wind around 5 mph becoming calm in the morning.
Monday Night
Partly cloudy, with a low around 26. Light southeast wind becoming south 5 to 10 mph in the evening.
Tuesday
Mostly sunny, with a high near 53.
Tuesday Night
Mostly cloudy, with a low around 41.
Wednesday
Partly sunny, with a high near 49.
Wednesday Night
A slight chance of rain before midnight, then a slight chance of rain and snow. Mostly cloudy, with a low around 28. Chance of precipitation is 20%.
Thursday
A chance of rain and snow, mainly before noon. Mostly cloudy, with a high near 38. Chance of precipitation is 30%.
Thursday Night
A slight chance of rain and snow. Mostly cloudy, with a low around 18. Chance of precipitation is 20%.
Friday
Mostly sunny, with a high near 26.
Friday Night
Mostly cloudy, with a low around 7.
Saturday
Partly sunny, with a high near 22.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Scott Air Force Base / Belleville IL
 38.54°N 89.87°W (Elev. 449 ft)
Last Update:
5:01 am CST Dec 7, 2025
Forecast Valid:
5am CST Dec 7, 2025-6pm CST Dec 13, 2025
 
Forecast Discussion
 
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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