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.

Fair

18°F

-8°C

Humidity 47%
Wind Speed N 10 mph
Barometer 30.39 in (1030.0 mb)
Dewpoint 1°F (-17°C)
Visibility 10.00 mi
Wind Chill6°F (-14°C)
Last update 30 Jan 12:53 pm CST
Extended Forecast for

Cahokia IL

  • This Afternoon

    This Afternoon: A chance of flurries. Sunny and cold, with a high near 20. North wind 9 to 11 mph.

    High: 20 °F

    Chance
    Flurries

  • Tonight

    Tonight: A chance of flurries before midnight. Increasing clouds, with a low around 5. North wind 9 to 11 mph, with gusts as high as 23 mph.

    Low: 5 °F

    Chance
    Flurries

  • Saturday

    Saturday: Mostly sunny and cold, with a high near 20. Northwest wind 8 to 13 mph, with gusts as high as 21 mph.

    High: 20 °F

    Cold

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 3. Northwest wind 5 to 7 mph becoming calm in the evening.

    Low: 3 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 31. Calm wind becoming south around 6 mph in the afternoon.

    High: 31 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 21.

    Low: 21 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 37.

    High: 37 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 23.

    Low: 23 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 30 percent chance of rain after noon. Mostly cloudy, with a high near 39.

    High: 39 °F

    Mostly Cloudy
    then Chance
    Rain

Detailed Forecast

This Afternoon
A chance of flurries. Sunny and cold, with a high near 20. North wind 9 to 11 mph.
Tonight
A chance of flurries before midnight. Increasing clouds, with a low around 5. North wind 9 to 11 mph, with gusts as high as 23 mph.
Saturday
Mostly sunny and cold, with a high near 20. Northwest wind 8 to 13 mph, with gusts as high as 21 mph.
Saturday Night
Mostly clear, with a low around 3. Northwest wind 5 to 7 mph becoming calm in the evening.
Sunday
Mostly sunny, with a high near 31. Calm wind becoming south around 6 mph in the afternoon.
Sunday Night
Mostly cloudy, with a low around 21.
Monday
Partly sunny, with a high near 37.
Monday Night
Mostly cloudy, with a low around 23.
Tuesday
A 30 percent chance of rain after noon. Mostly cloudy, with a high near 39.
Tuesday Night
A chance of rain before midnight, then a slight chance of rain and snow. Mostly cloudy, with a low around 27. Chance of precipitation is 30%.
Wednesday
Cloudy, with a high near 36.
Wednesday Night
Mostly cloudy, with a low around 21.
Thursday
Mostly sunny, with a high near 36.
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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:
11:01 am CST Jan 30, 2026
Forecast Valid:
1pm CST Jan 30, 2026-6pm CST Feb 5, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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