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 and Breezy

23°F

-5°C

Humidity 53%
Wind Speed NW 23 G 35 mph
Barometer 30.51 in (1033.9 mb)
Dewpoint 8°F (-13°C)
Visibility 10.00 mi
Wind Chill7°F (-14°C)
Last update 22 Feb 10:53 pm CST
Extended Forecast for

2 Miles SSW Caseyville IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 16. Northwest wind 14 to 17 mph, with gusts as high as 28 mph.

    Low: 16 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, then gradually becoming sunny, with a high near 34. Northwest wind 5 to 14 mph, with gusts as high as 22 mph.

    High: 34 °F

    Becoming
    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 21. Calm wind becoming south 5 to 8 mph after midnight.

    Low: 21 °F

    Mostly Clear

  • Tuesday

    Tuesday: Partly sunny, with a high near 54. South wind 10 to 16 mph, with gusts as high as 25 mph.

    High: 54 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 37. Southwest wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 20 mph.

    Low: 37 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 56.

    High: 56 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A chance of rain, then rain likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 38. Chance of precipitation is 60%.

    Low: 38 °F

    Rain Likely

  • Thursday

    Thursday: A 30 percent chance of rain before noon. Mostly sunny, with a high near 53.

    High: 53 °F

    Chance Rain
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 30.

    Low: 30 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 16. Northwest wind 14 to 17 mph, with gusts as high as 28 mph.
Monday
Partly sunny, then gradually becoming sunny, with a high near 34. Northwest wind 5 to 14 mph, with gusts as high as 22 mph.
Monday Night
Mostly clear, with a low around 21. Calm wind becoming south 5 to 8 mph after midnight.
Tuesday
Partly sunny, with a high near 54. South wind 10 to 16 mph, with gusts as high as 25 mph.
Tuesday Night
Mostly cloudy, with a low around 37. Southwest wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 20 mph.
Wednesday
Mostly sunny, with a high near 56.
Wednesday Night
A chance of rain, then rain likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 38. Chance of precipitation is 60%.
Thursday
A 30 percent chance of rain before noon. Mostly sunny, with a high near 53.
Thursday Night
Mostly clear, with a low around 30.
Friday
Sunny, with a high near 64.
Friday Night
Mostly clear, with a low around 40.
Saturday
Sunny, with a high near 65.
Saturday Night
A 20 percent chance of rain. Partly cloudy, with a low around 34.
Sunday
A 20 percent chance of rain. Partly sunny, with a high near 51.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSW Caseyville IL
 38.59°N 90.06°W (Elev. 423 ft)
Last Update:
10:26 pm CST Feb 22, 2026
Forecast Valid:
11pm CST Feb 22, 2026-6pm CST Mar 1, 2026
 
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Additional Resources

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Chance of Precipitation