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

23°F

-5°C

Humidity 50%
Wind Speed NW 8 G 20 mph
Barometer 30.60 in (1036.9 mb)
Dewpoint 7°F (-14°C)
Visibility 10.00 mi
Wind Chill14°F (-10°C)
Last update 23 Feb 10:53 am CST
Extended Forecast for

3 Miles E Caseyville IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 30. Northwest wind 6 to 13 mph, with gusts as high as 20 mph.

    High: 30 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 21. Calm wind becoming south 5 to 7 mph after midnight.

    Low: 21 °F

    Mostly Clear

  • Tuesday

    Tuesday: Partly sunny, with a high near 53. Breezy, with a south wind 8 to 13 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 38 mph.

    High: 53 °F

    Partly Sunny
    then Mostly
    Cloudy and
    Breezy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 35. Southwest wind 8 to 13 mph becoming light and variable after midnight. Winds could gust as high as 21 mph.

    Low: 35 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 52. Northwest wind around 6 mph becoming southeast in the afternoon.

    High: 52 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A slight chance of rain, then rain likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 37. Chance of precipitation is 60%.

    Low: 37 °F

    Slight Chance
    Rain then
    Rain Likely

  • Thursday

    Thursday: A 40 percent chance of rain before noon. Partly sunny, with a high near 48.

    High: 48 °F

    Chance Rain
    then Mostly
    Sunny

  • Thursday Night

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

    Low: 30 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 61.

    High: 61 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 30. Northwest wind 6 to 13 mph, with gusts as high as 20 mph.
Tonight
Mostly clear, with a low around 21. Calm wind becoming south 5 to 7 mph after midnight.
Tuesday
Partly sunny, with a high near 53. Breezy, with a south wind 8 to 13 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 38 mph.
Tuesday Night
Mostly cloudy, with a low around 35. Southwest wind 8 to 13 mph becoming light and variable after midnight. Winds could gust as high as 21 mph.
Wednesday
Mostly sunny, with a high near 52. Northwest wind around 6 mph becoming southeast in the afternoon.
Wednesday Night
A slight chance of rain, then rain likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 37. Chance of precipitation is 60%.
Thursday
A 40 percent chance of rain before noon. Partly sunny, with a high near 48.
Thursday Night
Mostly clear, with a low around 30.
Friday
Sunny, with a high near 61.
Friday Night
Clear, with a low around 39.
Saturday
Mostly sunny, with a high near 64.
Saturday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 35.
Sunday
A 30 percent chance of rain. Partly sunny, with a high near 50.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles E Caseyville IL
 38.63°N 89.98°W (Elev. 558 ft)
Last Update:
10:26 am CST Feb 23, 2026
Forecast Valid:
12pm CST Feb 23, 2026-6pm CST Mar 1, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation