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

47°F

8°C

Humidity 54%
Wind Speed NE 5 mph
Barometer 29.78 in (1008.5 mb)
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Wind Chill45°F (7°C)
Last update 25 Feb 10:53 pm CST
Extended Forecast for

2 Miles WNW Belleville IL

  • Tonight

    Tonight: A 40 percent chance of rain, mainly before 3am. Mostly cloudy, with a low around 36. Northeast wind 7 to 10 mph.

    Low: 36 °F

    Chance Rain

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny, with a high near 55. East wind 5 to 7 mph becoming calm in the afternoon.

    High: 55 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Clear, with a low around 37. South wind 3 to 5 mph.

    Low: 37 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 69. Light south wind becoming southwest 5 to 10 mph in the morning.

    High: 69 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 42. South wind 5 to 7 mph becoming north after midnight.

    Low: 42 °F

    Mostly Clear

  • Saturday

    Saturday: A 20 percent chance of rain. Sunny, with a high near 64.

    High: 64 °F

    Slight Chance
    Rain

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 32.

    Low: 32 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of rain and snow, mainly after noon. Cloudy, with a high near 45. Chance of precipitation is 40%.

    High: 45 °F

    Chance
    Rain/Snow

  • Sunday Night

    Sunday Night: Rain and snow likely before midnight, then a chance of rain, snow, and freezing rain. Cloudy, with a low around 30. Chance of precipitation is 70%.

    Low: 30 °F

    Wintry Mix
    Likely

Detailed Forecast

Tonight
A 40 percent chance of rain, mainly before 3am. Mostly cloudy, with a low around 36. Northeast wind 7 to 10 mph.
Thursday
Mostly cloudy, then gradually becoming sunny, with a high near 55. East wind 5 to 7 mph becoming calm in the afternoon.
Thursday Night
Clear, with a low around 37. South wind 3 to 5 mph.
Friday
Sunny, with a high near 69. Light south wind becoming southwest 5 to 10 mph in the morning.
Friday Night
Mostly clear, with a low around 42. South wind 5 to 7 mph becoming north after midnight.
Saturday
A 20 percent chance of rain. Sunny, with a high near 64.
Saturday Night
Mostly cloudy, with a low around 32.
Sunday
A chance of rain and snow, mainly after noon. Cloudy, with a high near 45. Chance of precipitation is 40%.
Sunday Night
Rain and snow likely before midnight, then a chance of rain, snow, and freezing rain. Cloudy, with a low around 30. Chance of precipitation is 70%.
Monday
A chance of rain and snow before noon, then a slight chance of rain. Cloudy, with a high near 40. Chance of precipitation is 30%.
Monday Night
A chance of rain or freezing rain. Cloudy, with a low around 28. Chance of precipitation is 40%.
Tuesday
A 50 percent chance of rain. Mostly cloudy, with a high near 45.
Tuesday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 34.
Wednesday
A 30 percent chance of rain. Mostly cloudy, with a high near 53.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WNW Belleville IL
 38.55°N 90.04°W (Elev. 538 ft)
Last Update:
9:51 pm CST Feb 25, 2026
Forecast Valid:
11pm CST Feb 25, 2026-6pm CST Mar 4, 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