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

21°C

69°F

Humidity 61%
Wind Speed SE 7 km/h
Barometer 1018.5 mb (30.09 in)
Dewpoint 13°C (55°F)
Visibility 16 km
Last update 30 May 8:53 pm CDT
Extended Forecast for

Cahokia IL

  • Tonight

    Tonight: Mostly clear, with a low around 14. Southeast wind around 11 km/h.

    Low: 14 °C

    Mostly Clear

  • Friday

    Friday: A 30 percent chance of showers, mainly after 5pm. Increasing clouds, with a high near 27. Southeast wind 11 to 16 km/h increasing to 18 to 23 km/h in the morning. Winds could gust as high as 34 km/h.

    High: 27 °C

    Sunny then
    Chance
    Showers

  • Friday Night

    Friday Night: Showers likely, then showers and possibly a thunderstorm after 10pm. Low around 18. Southeast wind 18 to 23 km/h. Chance of precipitation is 80%.

    Low: 18 °C

    Showers

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 24. South wind around 16 km/h becoming west in the afternoon. Chance of precipitation is 70%.

    High: 24 °C

    Showers
    Likely

  • Saturday Night

    Saturday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 17. Northwest wind 6 to 11 km/h becoming light in the evening.

    Low: 17 °C

    Slight Chance
    T-storms

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 29.

    High: 29 °C

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 20.

    Low: 20 °C

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Monday

    Monday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 29. Chance of precipitation is 60%.

    High: 29 °C

    Chance
    T-storms then
    Showers
    Likely

  • Monday Night

    Monday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 21.

    Low: 21 °C

    Chance
    T-storms

Detailed Forecast

Tonight
Mostly clear, with a low around 14. Southeast wind around 11 km/h.
Friday
A 30 percent chance of showers, mainly after 5pm. Increasing clouds, with a high near 27. Southeast wind 11 to 16 km/h increasing to 18 to 23 km/h in the morning. Winds could gust as high as 34 km/h.
Friday Night
Showers likely, then showers and possibly a thunderstorm after 10pm. Low around 18. Southeast wind 18 to 23 km/h. Chance of precipitation is 80%.
Saturday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 24. South wind around 16 km/h becoming west in the afternoon. Chance of precipitation is 70%.
Saturday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 17. Northwest wind 6 to 11 km/h becoming light in the evening.
Sunday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 29.
Sunday Night
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 20.
Monday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 29. Chance of precipitation is 60%.
Monday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 21.
Tuesday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 31.
Tuesday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 21.
Wednesday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 31.
Wednesday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 19.
Thursday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 31.
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ABOUT THIS FORECAST

 
Point Forecast:
Cahokia IL
 38.55°N 90.18°W (Elev. 407 m)
Last Update:
6:07 pm CDT May 30, 2024
Forecast Valid:
9pm CDT May 30, 2024-6pm CDT Jun 6, 2024
 
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