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.

Fair

25°F

-4°C

Humidity 88%
Wind Speed Calm
Barometer 29.89 in (1012.7 mb)
Dewpoint 22°F (-6°C)
Visibility 9.00 mi
Last update 5 Feb 11:53 pm CST
Extended Forecast for

2 Miles SE Cahokia IL

  • Tonight

    Tonight: Mostly clear, with a low around 29. West wind 6 to 9 mph.

    Low: 29 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 46. West wind 10 to 15 mph becoming northwest in the morning. Winds could gust as high as 25 mph.

    High: 46 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 24. North wind 6 to 10 mph, with gusts as high as 20 mph.

    Low: 24 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 37. Northeast wind around 6 mph becoming southeast in the afternoon.

    High: 37 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 26. Southeast wind 6 to 8 mph.

    Low: 26 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 53.

    High: 53 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 30.

    Low: 30 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 58.

    High: 58 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 41.

    Low: 41 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 29. West wind 6 to 9 mph.
Friday
Mostly sunny, with a high near 46. West wind 10 to 15 mph becoming northwest in the morning. Winds could gust as high as 25 mph.
Friday Night
Partly cloudy, with a low around 24. North wind 6 to 10 mph, with gusts as high as 20 mph.
Saturday
Sunny, with a high near 37. Northeast wind around 6 mph becoming southeast in the afternoon.
Saturday Night
Mostly cloudy, with a low around 26. Southeast wind 6 to 8 mph.
Sunday
Mostly sunny, with a high near 53.
Sunday Night
Mostly clear, with a low around 30.
Monday
Sunny, with a high near 58.
Monday Night
Mostly clear, with a low around 41.
Tuesday
A 20 percent chance of rain after noon. Partly sunny, with a high near 65.
Tuesday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 44.
Wednesday
A 30 percent chance of rain. Mostly cloudy, with a high near 56.
Wednesday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 36.
Thursday
A 30 percent chance of rain. Mostly cloudy, with a high near 49.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SE Cahokia IL
 38.53°N 90.15°W (Elev. 499 ft)
Last Update:
10:51 pm CST Feb 5, 2026
Forecast Valid:
11pm CST Feb 5, 2026-6pm CST Feb 12, 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