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

31°F

-1°C

Humidity 67%
Wind Speed SE 5 mph
Barometer 30.17 in (1022.1 mb)
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Wind Chill26°F (-3°C)
Last update 8 Feb 8:53 pm CST
Extended Forecast for

2 Miles SE Cahokia IL

  • Tonight

    Tonight: Mostly clear, with a low around 29. Southeast wind around 5 mph becoming calm after midnight.

    Low: 29 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 55. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 55 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 42. Southeast wind around 7 mph becoming southwest after midnight.

    Low: 42 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 61. West wind 6 to 8 mph becoming north in the afternoon.

    High: 61 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 34. North wind around 6 mph.

    Low: 34 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 51.

    High: 51 °F

    Mostly Sunny

  • Wednesday Night

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

    Low: 32 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 20 percent chance of rain after noon. Mostly cloudy, with a high near 46.

    High: 46 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Thursday Night

    Thursday Night: A 40 percent chance of rain, mainly before midnight. Mostly cloudy, with a low around 33.

    Low: 33 °F

    Chance Rain

Detailed Forecast

Tonight
Mostly clear, with a low around 29. Southeast wind around 5 mph becoming calm after midnight.
Monday
Sunny, with a high near 55. Calm wind becoming southeast around 5 mph in the afternoon.
Monday Night
Mostly clear, with a low around 42. Southeast wind around 7 mph becoming southwest after midnight.
Tuesday
Sunny, with a high near 61. West wind 6 to 8 mph becoming north in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 34. North wind around 6 mph.
Wednesday
Mostly sunny, with a high near 51.
Wednesday Night
Mostly cloudy, with a low around 32.
Thursday
A 20 percent chance of rain after noon. Mostly cloudy, with a high near 46.
Thursday Night
A 40 percent chance of rain, mainly before midnight. Mostly cloudy, with a low around 33.
Friday
A 20 percent chance of rain. Partly sunny, with a high near 46.
Friday Night
A 30 percent chance of rain. Partly cloudy, with a low around 32.
Saturday
A 40 percent chance of rain. Partly sunny, with a high near 46.
Saturday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 34.
Sunday
A 20 percent chance of rain. Sunny, with a high near 51.
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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:
9:26 pm CST Feb 8, 2026
Forecast Valid:
9pm CST Feb 8, 2026-6pm CST Feb 15, 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