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.

A Few Clouds and Breezy

24°F

-4°C

Humidity 60%
Wind Speed NW 21 G 31 mph
Barometer 30.37 in (1028.9 mb)
Dewpoint 12°F (-11°C)
Visibility 10.00 mi
Wind Chill9°F (-13°C)
Last update 22 Feb 5:53 am CST
Extended Forecast for

2 Miles SE Cahokia IL

  • Today

    Today: Mostly sunny, with a high near 32. Breezy, with a northwest wind 17 to 21 mph, with gusts as high as 32 mph.

    High: 32 °F

    Mostly Sunny
    and Breezy

  • Tonight

    Tonight: Partly cloudy, with a low around 16. Northwest wind 14 to 17 mph, with gusts as high as 30 mph.

    Low: 16 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 34. Northwest wind 8 to 16 mph, with gusts as high as 25 mph.

    High: 34 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 20. Calm wind becoming south 5 to 8 mph after midnight.

    Low: 20 °F

    Mostly Clear

  • Tuesday

    Tuesday: Partly sunny, with a high near 54. South wind 9 to 15 mph, with gusts as high as 24 mph.

    High: 54 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 39.

    Low: 39 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 58.

    High: 58 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 40.

    Low: 40 °F

    Chance Rain

  • Thursday

    Thursday: A 30 percent chance of rain before noon. Mostly sunny, with a high near 53.

    High: 53 °F

    Chance Rain
    then Mostly
    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 32. Breezy, with a northwest wind 17 to 21 mph, with gusts as high as 32 mph.
Tonight
Partly cloudy, with a low around 16. Northwest wind 14 to 17 mph, with gusts as high as 30 mph.
Monday
Sunny, with a high near 34. Northwest wind 8 to 16 mph, with gusts as high as 25 mph.
Monday Night
Mostly clear, with a low around 20. Calm wind becoming south 5 to 8 mph after midnight.
Tuesday
Partly sunny, with a high near 54. South wind 9 to 15 mph, with gusts as high as 24 mph.
Tuesday Night
Mostly cloudy, with a low around 39.
Wednesday
Partly sunny, with a high near 58.
Wednesday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 40.
Thursday
A 30 percent chance of rain before noon. Mostly sunny, with a high near 53.
Thursday Night
Mostly clear, with a low around 31.
Friday
Sunny, with a high near 63.
Friday Night
Mostly clear, with a low around 41.
Saturday
A 20 percent chance of rain. Mostly sunny, with a high near 64.
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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:
4:31 am CST Feb 22, 2026
Forecast Valid:
6am CST Feb 22, 2026-6pm CST Feb 28, 2026
 
Forecast Discussion
 
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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