National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Light Snow Fog/Mist

9°F

-13°C

Humidity 84%
Wind Speed NE 9 mph
Barometer 30.28 in (1026.3 mb)
Dewpoint 5°F (-15°C)
Visibility 0.75 mi
Wind Chill-4°F (-20°C)
Last update 24 Jan 9:53 pm CST
Extended Forecast for

Cahokia IL

Cold Weather Advisory January 26, 12:00am until January 26, 12:00pm
Winter Storm Warning January 24, 10:26pm until January 25, 06:00pm
Click here for hazard details and duration
Cold Weather Advisory
Winter Storm Warning
  •  
    Winter Storm Warning January 24, 10:26pm until January 25, 06:00pm

    NOW until 6:00pm Sun

    Winter Storm Warning

  • Tonight

    Low: 9 °F

    Heavy Snow

  • Sunday

    Sunday: Snow, mainly before 3pm. High near 15. North wind 10 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.

    High: 15 °F

    Snow

  • Sunday Night

    Sunday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around -2. Wind chill values as low as -15. Northwest wind 7 to 11 mph, with gusts as high as 23 mph.

    Low: -2 °F

    Decreasing
    Clouds

  • Monday

    Monday: Sunny and cold, with a high near 17. Wind chill values as low as -15. Northwest wind 6 to 9 mph.

    High: 17 °F

    Cold

  • Monday Night

    Monday Night: Mostly clear, with a low around 4. Southwest wind 5 to 8 mph.

    Low: 4 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 32.

    High: 32 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 5.

    Low: 5 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 27.

    High: 27 °F

    Partly Sunny

Detailed Forecast

Tonight
Snow. The snow could be heavy at times. Low around 9. North wind 7 to 10 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of 4 to 8 inches possible.
Sunday
Snow, mainly before 3pm. High near 15. North wind 10 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.
Sunday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around -2. Wind chill values as low as -15. Northwest wind 7 to 11 mph, with gusts as high as 23 mph.
Monday
Sunny and cold, with a high near 17. Wind chill values as low as -15. Northwest wind 6 to 9 mph.
Monday Night
Mostly clear, with a low around 4. Southwest wind 5 to 8 mph.
Tuesday
Sunny, with a high near 32.
Tuesday Night
Partly cloudy, with a low around 5.
Wednesday
Partly sunny, with a high near 27.
Wednesday Night
Partly cloudy, with a low around 4.
Thursday
Partly sunny, with a high near 21.
Thursday Night
Partly cloudy, with a low around 4.
Friday
Mostly sunny, with a high near 21.
Friday Night
Partly cloudy, with a low around 4.
Saturday
Mostly sunny, with a high near 25.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Cahokia IL
 38.57°N 90.18°W (Elev. 407 ft)
Last Update:
9:46 pm CST Jan 24, 2026
Forecast Valid:
10pm CST Jan 24, 2026-6pm CST Jan 31, 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