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.

A Few Clouds and Breezy

33°F

1°C

Humidity 45%
Wind Speed NW 21 G 36 mph
Barometer 30.06 in (1018.2 mb)
Dewpoint 14°F (-10°C)
Visibility 10.00 mi
Wind Chill21°F (-6°C)
Last update 14 Jan 4:53 pm CST
Extended Forecast for

2 Miles SSE Cahokia IL

  • Tonight

    Tonight: Clear, with a low around 18. Northwest wind 7 to 16 mph, with gusts as high as 28 mph.

    Low: 18 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 35. Northwest wind around 7 mph becoming south in the afternoon.

    High: 35 °F

    Sunny

  • Thursday Night

    Thursday Night: A chance of snow before 1am, then a chance of rain between 1am and 2am, then a chance of snow after 2am. Mostly cloudy, with a low around 28. South wind 5 to 10 mph becoming west after midnight. Chance of precipitation is 40%.

    Low: 28 °F

    Chance Snow
    then Chance
    Rain/Snow

  • Friday

    Friday: Partly sunny, with a high near 45. West wind 10 to 15 mph, with gusts as high as 24 mph.

    High: 45 °F

    Partly Sunny

  • Friday Night

    Friday Night: A 20 percent chance of snow showers. Mostly cloudy, with a low around 21. West wind 11 to 14 mph, with gusts as high as 24 mph.

    Low: 21 °F

    Slight Chance
    Snow Showers

  • Saturday

    Saturday: Partly sunny, with a high near 26.

    High: 26 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 9.

    Low: 9 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 26.

    High: 26 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 16.

    Low: 16 °F

    Partly Cloudy

Detailed Forecast

Tonight
Clear, with a low around 18. Northwest wind 7 to 16 mph, with gusts as high as 28 mph.
Thursday
Sunny, with a high near 35. Northwest wind around 7 mph becoming south in the afternoon.
Thursday Night
A chance of snow before 1am, then a chance of rain between 1am and 2am, then a chance of snow after 2am. Mostly cloudy, with a low around 28. South wind 5 to 10 mph becoming west after midnight. Chance of precipitation is 40%.
Friday
Partly sunny, with a high near 45. West wind 10 to 15 mph, with gusts as high as 24 mph.
Friday Night
A 20 percent chance of snow showers. Mostly cloudy, with a low around 21. West wind 11 to 14 mph, with gusts as high as 24 mph.
Saturday
Partly sunny, with a high near 26.
Saturday Night
Partly cloudy, with a low around 9.
Sunday
Mostly sunny, with a high near 26.
Sunday Night
Partly cloudy, with a low around 16.
M.L.King Day
Mostly sunny, with a high near 27.
Monday Night
Mostly clear, with a low around 11.
Tuesday
Sunny, with a high near 33.
Tuesday Night
Mostly clear, with a low around 21.
Wednesday
Mostly sunny, with a high near 43.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSE Cahokia IL
 38.53°N 90.18°W (Elev. 522 ft)
Last Update:
4:51 pm CST Jan 14, 2026
Forecast Valid:
5pm CST Jan 14, 2026-6pm CST Jan 21, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation