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

59°F

15°C

Humidity 64%
Wind Speed S 8 mph
Barometer 30.01 in (1016.1 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Last update 5 Nov 1:53 am CST
Extended Forecast for

Caseyville IL

  • Overnight

    Overnight: Partly cloudy, with a low around 52. Southwest wind around 10 mph, with gusts as high as 20 mph.

    Low: 52 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 70. Southwest wind 9 to 15 mph becoming north in the afternoon. Winds could gust as high as 23 mph.

    High: 70 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 37. North wind 5 to 7 mph becoming east after midnight.

    Low: 37 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 65. Southeast wind 5 to 14 mph, with gusts as high as 21 mph.

    High: 65 °F

    Sunny

  • Thursday Night

    Thursday Night: A 30 percent chance of rain after midnight. Mostly cloudy, with a low around 54. Southeast wind around 10 mph becoming southwest after midnight. Winds could gust as high as 20 mph.

    Low: 54 °F

    Mostly Cloudy
    then Chance
    Rain

  • Friday

    Friday: A 30 percent chance of rain before noon. Mostly sunny, with a high near 73.

    High: 73 °F

    Chance Rain
    then Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 44.

    Low: 44 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 67.

    High: 67 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of rain before midnight. Partly cloudy, with a low around 37.

    Low: 37 °F

    Slight Chance
    Rain then
    Partly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 52. Southwest wind around 10 mph, with gusts as high as 20 mph.
Wednesday
Sunny, with a high near 70. Southwest wind 9 to 15 mph becoming north in the afternoon. Winds could gust as high as 23 mph.
Wednesday Night
Clear, with a low around 37. North wind 5 to 7 mph becoming east after midnight.
Thursday
Sunny, with a high near 65. Southeast wind 5 to 14 mph, with gusts as high as 21 mph.
Thursday Night
A 30 percent chance of rain after midnight. Mostly cloudy, with a low around 54. Southeast wind around 10 mph becoming southwest after midnight. Winds could gust as high as 20 mph.
Friday
A 30 percent chance of rain before noon. Mostly sunny, with a high near 73.
Friday Night
Partly cloudy, with a low around 44.
Saturday
Mostly sunny, with a high near 67.
Saturday Night
A 20 percent chance of rain before midnight. Partly cloudy, with a low around 37.
Sunday
Mostly sunny, with a high near 45.
Sunday Night
Mostly clear, with a low around 25.
Monday
Sunny, with a high near 44.
Monday Night
Mostly clear, with a low around 28.
Veterans Day
Mostly sunny, with a high near 55.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Caseyville IL
 38.64°N 90.03°W (Elev. 446 ft)
Last Update:
12:41 am CST Nov 5, 2025
Forecast Valid:
2am CST Nov 5, 2025-6pm CST Nov 11, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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