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

62°F

17°C

Humidity 80%
Wind Speed S 6 mph
Barometer 29.69 in (1005.0 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 22 Mar 2:53 am CDT
Extended Forecast for

2 Miles SE Cahokia IL

  • Today

    Today: Mostly sunny, with a high near 90. Southwest wind 8 to 14 mph becoming northwest in the afternoon. Winds could gust as high as 21 mph.

    High: 90 °F

    Mostly Sunny

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 10pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 37. Breezy, with a north wind 13 to 23 mph, with gusts as high as 37 mph.

    Low: 37 °F

    Slight Chance
    T-storms and
    Breezy then
    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 56. North wind 9 to 11 mph.

    High: 56 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 40. Northeast wind around 6 mph.

    Low: 40 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 66. Southeast wind around 7 mph.

    High: 66 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 47.

    Low: 47 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 76.

    High: 76 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 61.

    Low: 61 °F

    Slight Chance
    T-storms

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 89.

    High: 89 °F

    Sunny then
    Slight Chance
    T-storms

Detailed Forecast

Today
Mostly sunny, with a high near 90. Southwest wind 8 to 14 mph becoming northwest in the afternoon. Winds could gust as high as 21 mph.
Tonight
A 20 percent chance of showers and thunderstorms before 10pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 37. Breezy, with a north wind 13 to 23 mph, with gusts as high as 37 mph.
Monday
Mostly sunny, with a high near 56. North wind 9 to 11 mph.
Monday Night
Mostly cloudy, with a low around 40. Northeast wind around 6 mph.
Tuesday
Mostly sunny, with a high near 66. Southeast wind around 7 mph.
Tuesday Night
Mostly cloudy, with a low around 47.
Wednesday
Partly sunny, with a high near 76.
Wednesday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 61.
Thursday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 89.
Thursday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 43.
Friday
A 50 percent chance of showers. Mostly cloudy, with a high near 54.
Friday Night
A 20 percent chance of showers. Partly cloudy, with a low around 34.
Saturday
Mostly sunny, with a high near 58.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SE Cahokia IL
 38.53°N 90.15°W (Elev. 499 ft)
Last Update:
4:16 am CDT Mar 22, 2026
Forecast Valid:
4am CDT Mar 22, 2026-6pm CDT Mar 28, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation