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

80°F

27°C

Humidity 67%
Wind Speed NW 6 mph
Barometer 29.97 in (1014.3 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 14 Oct 1:53 am CDT
Extended Forecast for

Scott Air Force Base / Belleville IL

  • Overnight

    Overnight: Showers and thunderstorms likely, mainly after 5am. Mostly clear early, then becoming mostly cloudy, with a low around 72. West wind around 6 mph. Chance of precipitation is 60%.

    Low: 72 °F

    T-storms
    Likely

  • Wednesday

    Wednesday: Showers and thunderstorms before 11am, then showers likely and possibly a thunderstorm between 11am and 1pm, then a chance of showers and thunderstorms after 1pm. High near 79. West wind around 6 mph becoming light and variable. Chance of precipitation is 90%.

    High: 79 °F

    T-storms then
    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers and thunderstorms, mainly after 11pm. Mostly cloudy, with a low around 66. Light and variable wind becoming east around 6 mph in the evening.

    Low: 66 °F

    Chance
    Showers then
    Chance
    T-storms

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm before noon, then a chance of showers and thunderstorms after noon. Cloudy through mid morning, then gradual clearing, with a high near 84. East wind 6 to 10 mph becoming southwest in the afternoon. Chance of precipitation is 60%.

    High: 84 °F

    Showers
    Likely then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 50. Southwest wind 8 to 18 mph becoming northwest after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 70%.

    Low: 50 °F

    Showers
    Likely

  • Friday

    Friday: Partly sunny, with a high near 61. Breezy.

    High: 61 °F

    Partly Sunny
    and Breezy

  • Friday Night

    Friday Night: Mostly clear, with a low around 38.

    Low: 38 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 62.

    High: 62 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 37.

    Low: 37 °F

    Clear

Detailed Forecast

Overnight
Showers and thunderstorms likely, mainly after 5am. Mostly clear early, then becoming mostly cloudy, with a low around 72. West wind around 6 mph. Chance of precipitation is 60%.
Wednesday
Showers and thunderstorms before 11am, then showers likely and possibly a thunderstorm between 11am and 1pm, then a chance of showers and thunderstorms after 1pm. High near 79. West wind around 6 mph becoming light and variable. Chance of precipitation is 90%.
Wednesday Night
A 30 percent chance of showers and thunderstorms, mainly after 11pm. Mostly cloudy, with a low around 66. Light and variable wind becoming east around 6 mph in the evening.
Thursday
Showers likely and possibly a thunderstorm before noon, then a chance of showers and thunderstorms after noon. Cloudy through mid morning, then gradual clearing, with a high near 84. East wind 6 to 10 mph becoming southwest in the afternoon. Chance of precipitation is 60%.
Thursday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 50. Southwest wind 8 to 18 mph becoming northwest after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 70%.
Friday
Partly sunny, with a high near 61. Breezy.
Friday Night
Mostly clear, with a low around 38.
Saturday
Sunny, with a high near 62.
Saturday Night
Clear, with a low around 37.
Sunday
Sunny, with a high near 70.
Sunday Night
Partly cloudy, with a low around 44.
Monday
Mostly sunny, with a high near 73.
Monday Night
Partly cloudy, with a low around 48.
Tuesday
Mostly sunny, with a high near 78.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Scott Air Force Base / Belleville IL
 38.54°N 89.87°W (Elev. 449 ft)
Last Update:
1:26 am CDT Oct 14, 2026
Forecast Valid:
2am CDT Oct 14, 2026-6pm CDT Oct 20, 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