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.

Light Rain

56°F

13°C

Humidity 97%
Wind Speed N 8 mph
Barometer 29.87 in (1011.5 mb)
Dewpoint 55°F (13°C)
Visibility 9.00 mi
Last update 21 Nov 5:53 pm CST
Extended Forecast for

Scott Air Force Base / Belleville IL

  • Tonight

    Tonight: A 50 percent chance of rain, mainly before 1am. Patchy fog. Otherwise, cloudy, with a low around 46. North wind 5 to 8 mph.

    Low: 46 °F

    Chance Rain
    and Patchy
    Fog

  • Saturday

    Saturday: Mostly cloudy, then gradually becoming sunny, with a high near 60. North wind 5 to 7 mph becoming west in the afternoon.

    High: 60 °F

    Decreasing
    Clouds

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 40. Southwest wind 3 to 6 mph.

    Low: 40 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 61. Calm wind.

    High: 61 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 41. Calm wind becoming southeast around 5 mph after midnight.

    Low: 41 °F

    Mostly Cloudy

  • Monday

    Monday: Rain likely, mainly after noon. Mostly cloudy, with a high near 57. Chance of precipitation is 70%.

    High: 57 °F

    Chance Rain
    then Rain
    Likely

  • Monday Night

    Monday Night: Rain, mainly before midnight. Low around 49. Chance of precipitation is 90%.

    Low: 49 °F

    Rain then
    Chance Rain

  • Tuesday

    Tuesday: A 20 percent chance of rain. Partly sunny, with a high near 64.

    High: 64 °F

    Slight Chance
    Rain

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 36.

    Low: 36 °F

    Partly Cloudy

Detailed Forecast

Tonight
A 50 percent chance of rain, mainly before 1am. Patchy fog. Otherwise, cloudy, with a low around 46. North wind 5 to 8 mph.
Saturday
Mostly cloudy, then gradually becoming sunny, with a high near 60. North wind 5 to 7 mph becoming west in the afternoon.
Saturday Night
Mostly clear, with a low around 40. Southwest wind 3 to 6 mph.
Sunday
Sunny, with a high near 61. Calm wind.
Sunday Night
Mostly cloudy, with a low around 41. Calm wind becoming southeast around 5 mph after midnight.
Monday
Rain likely, mainly after noon. Mostly cloudy, with a high near 57. Chance of precipitation is 70%.
Monday Night
Rain, mainly before midnight. Low around 49. Chance of precipitation is 90%.
Tuesday
A 20 percent chance of rain. Partly sunny, with a high near 64.
Tuesday Night
Partly cloudy, with a low around 36.
Wednesday
Mostly sunny, with a high near 50.
Wednesday Night
Partly cloudy, with a low around 29.
Thanksgiving Day
Mostly sunny, with a high near 48.
Thursday Night
Mostly cloudy, with a low around 29.
Friday
A 20 percent chance of rain. Mostly sunny, with a high near 47.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Scott Air Force Base / Belleville IL
 38.54°N 89.84°W (Elev. 417 ft)
Last Update:
4:36 pm CST Nov 21, 2025
Forecast Valid:
6pm CST Nov 21, 2025-6pm CST Nov 28, 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