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.

Partly Cloudy

67°F

19°C

Humidity 49%
Wind Speed S 8 mph
Barometer 30.14 in (1020.2 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Last update 10 Apr 3:53 am CDT
Extended Forecast for

Cahokia IL

  • Today

    Today: Showers and thunderstorms likely before 4pm, then a slight chance of showers. Cloudy, with a high near 72. Southwest wind 6 to 9 mph becoming north in the afternoon. Chance of precipitation is 60%.

    High: 72 °F

    Showers
    Likely

  • Tonight

    Tonight: A chance of showers, with thunderstorms also possible after 4am. Mostly cloudy, with a low around 53. North wind 5 to 8 mph becoming east after midnight. Chance of precipitation is 30%.

    Low: 53 °F

    Chance
    Showers

  • Saturday

    Saturday: A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 75. Southeast wind 7 to 9 mph.

    High: 75 °F

    Chance
    Showers then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 61. Southeast wind 6 to 8 mph.

    Low: 61 °F

    Partly Cloudy

  • Sunday

    Sunday: A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 81. South wind 8 to 17 mph, with gusts as high as 30 mph. Chance of precipitation is 30%.

    High: 81 °F

    Partly Sunny
    then Chance
    Showers

  • Sunday Night

    Sunday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 66.

    Low: 66 °F

    Chance
    T-storms

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 87.

    High: 87 °F

    Chance
    T-storms

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 69.

    Low: 69 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 88.

    High: 88 °F

    Chance
    T-storms

Detailed Forecast

Today
Showers and thunderstorms likely before 4pm, then a slight chance of showers. Cloudy, with a high near 72. Southwest wind 6 to 9 mph becoming north in the afternoon. Chance of precipitation is 60%.
Tonight
A chance of showers, with thunderstorms also possible after 4am. Mostly cloudy, with a low around 53. North wind 5 to 8 mph becoming east after midnight. Chance of precipitation is 30%.
Saturday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 75. Southeast wind 7 to 9 mph.
Saturday Night
Partly cloudy, with a low around 61. Southeast wind 6 to 8 mph.
Sunday
A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 81. South wind 8 to 17 mph, with gusts as high as 30 mph. Chance of precipitation is 30%.
Sunday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 66.
Monday
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 87.
Monday Night
Mostly cloudy, with a low around 69.
Tuesday
A 40 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 88.
Tuesday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67.
Wednesday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 84.
Wednesday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 61.
Thursday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 82.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Cahokia IL
 38.57°N 90.18°W (Elev. 407 ft)
Last Update:
4:46 am CDT Apr 10, 2026
Forecast Valid:
5am CDT Apr 10, 2026-6pm CDT Apr 16, 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