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.

Partly Cloudy

78°F

26°C

Humidity 67%
Wind Speed SW 7 mph
Barometer 29.91 in (1012.6 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 15 Oct 6:53 pm CDT
Extended Forecast for

2 Miles SSE Belleville IL

  • Tonight

    Tonight: Scattered showers between 9pm and 3am. Increasing clouds, with a low around 50. Light west wind becoming northwest 12 to 17 mph in the evening. Winds could gust as high as 28 mph. Chance of precipitation is 40%.

    Low: 50 °F

    Scattered
    Showers

  • Friday

    Friday: Isolated showers after 4pm. Increasing clouds, with a high near 56. Breezy, with a northwest wind 16 to 20 mph, with gusts as high as 32 mph. Chance of precipitation is 20%.

    High: 56 °F

    Partly Sunny
    then Isolated
    Showers and
    Breezy

  • Friday Night

    Friday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 39. Northwest wind 8 to 17 mph, with gusts as high as 28 mph.

    Low: 39 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Sunny, with a high near 60. North wind around 6 mph becoming calm in the afternoon.

    High: 60 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 36. Calm wind.

    Low: 36 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 67.

    High: 67 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 40.

    Low: 40 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 71.

    High: 71 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 45.

    Low: 45 °F

    Partly Cloudy

Detailed Forecast

Tonight
Scattered showers between 9pm and 3am. Increasing clouds, with a low around 50. Light west wind becoming northwest 12 to 17 mph in the evening. Winds could gust as high as 28 mph. Chance of precipitation is 40%.
Friday
Isolated showers after 4pm. Increasing clouds, with a high near 56. Breezy, with a northwest wind 16 to 20 mph, with gusts as high as 32 mph. Chance of precipitation is 20%.
Friday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 39. Northwest wind 8 to 17 mph, with gusts as high as 28 mph.
Saturday
Sunny, with a high near 60. North wind around 6 mph becoming calm in the afternoon.
Saturday Night
Clear, with a low around 36. Calm wind.
Sunday
Sunny, with a high near 67.
Sunday Night
Mostly clear, with a low around 40.
Monday
Mostly sunny, with a high near 71.
Monday Night
Partly cloudy, with a low around 45.
Tuesday
Mostly sunny, with a high near 76.
Tuesday Night
Mostly clear, with a low around 48.
Wednesday
Sunny, with a high near 79.
Wednesday Night
Mostly clear, with a low around 50.
Thursday
Sunny, with a high near 81.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSE Belleville IL
 38.5°N 89.98°W (Elev. 495 ft)
Last Update:
7:46 pm CDT Oct 15, 2026
Forecast Valid:
7pm CDT Oct 15, 2026-6pm CDT Oct 22, 2026
 
Forecast Discussion
 
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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