Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Overcast

26°F

-3°C

Humidity 71%
Wind Speed N 8 mph
Barometer 30.34 in (1028.0 mb)
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Wind Chill18°F (-8°C)
Last update 4 Feb 4:53 am CST
Extended Forecast for

Cahokia IL

  • Today

    Today: Partly sunny, with a high near 31. North wind 6 to 8 mph.

    High: 31 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 16. North wind 5 to 7 mph becoming calm  in the evening.

    Low: 16 °F

    Mostly Clear

  • Thursday

    Thursday: Partly sunny, with a high near 41. Calm wind becoming south 5 to 7 mph in the morning.

    High: 41 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 32. South wind 5 to 7 mph becoming west in the evening.

    Low: 32 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 49. West wind 8 to 13 mph becoming northwest in the afternoon. Winds could gust as high as 22 mph.

    High: 49 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 26.

    Low: 26 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 42.

    High: 42 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 31.

    Low: 31 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 52.

    High: 52 °F

    Mostly Sunny

Detailed Forecast

Today
Partly sunny, with a high near 31. North wind 6 to 8 mph.
Tonight
Mostly clear, with a low around 16. North wind 5 to 7 mph becoming calm in the evening.
Thursday
Partly sunny, with a high near 41. Calm wind becoming south 5 to 7 mph in the morning.
Thursday Night
Mostly clear, with a low around 32. South wind 5 to 7 mph becoming west in the evening.
Friday
Mostly sunny, with a high near 49. West wind 8 to 13 mph becoming northwest in the afternoon. Winds could gust as high as 22 mph.
Friday Night
Mostly clear, with a low around 26.
Saturday
Mostly sunny, with a high near 42.
Saturday Night
Partly cloudy, with a low around 31.
Sunday
Mostly sunny, with a high near 52.
Sunday Night
Partly cloudy, with a low around 29.
Monday
Mostly sunny, with a high near 52.
Monday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 38.
Tuesday
A 20 percent chance of rain. Partly sunny, with a high near 60.
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ABOUT THIS FORECAST

 
Point Forecast:
Cahokia IL
 38.57°N 90.18°W (Elev. 407 ft)
2:27 am CST Feb 4, 2026
5am CST Feb 4, 2026-6pm CST Feb 10, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database