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

68°F

20°C

Humidity 35%
Wind Speed SW 6 mph
Barometer 30.03 in (1016.7 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 25 Mar 11:53 am CDT
Extended Forecast for

2 Miles SE Cahokia IL

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 78. South wind 8 to 11 mph.

    High: 78 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 64. Southwest wind around 11 mph, with gusts as high as 21 mph.

    Low: 64 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 91. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 91 °F

    Sunny

  • Thursday Night

    Thursday Night: A chance of rain and thunderstorms before 1am, then showers and possibly a thunderstorm between 1am and 4am, then rain after 4am. Low around 45. Southwest wind 11 to 17 mph becoming north after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 90%.

    Low: 45 °F

    Chance
    T-storms then
    Showers

  • Friday

    Friday: Rain, mainly before 7am. High near 53. North wind 14 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 80%.

    High: 53 °F

    Rain then
    Chance Rain

  • Friday Night

    Friday Night: Mostly clear, with a low around 34.

    Low: 34 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 59.

    High: 59 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 42.

    Low: 42 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 65.

    High: 65 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 78. South wind 8 to 11 mph.
Tonight
Mostly clear, with a low around 64. Southwest wind around 11 mph, with gusts as high as 21 mph.
Thursday
Sunny, with a high near 91. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Thursday Night
A chance of rain and thunderstorms before 1am, then showers and possibly a thunderstorm between 1am and 4am, then rain after 4am. Low around 45. Southwest wind 11 to 17 mph becoming north after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 90%.
Friday
Rain, mainly before 7am. High near 53. North wind 14 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 80%.
Friday Night
Mostly clear, with a low around 34.
Saturday
Sunny, with a high near 59.
Saturday Night
Partly cloudy, with a low around 42.
Sunday
Partly sunny, with a high near 65.
Sunday Night
Mostly cloudy, with a low around 54.
Monday
Mostly sunny, with a high near 82.
Monday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 62.
Tuesday
A 30 percent chance of rain and thunderstorms. Partly sunny, with a high near 81.
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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:
10:31 am CDT Mar 25, 2026
Forecast Valid:
12pm CDT Mar 25, 2026-6pm CDT Mar 31, 2026
 
Forecast Discussion
 
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Additional Resources

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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