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.

Mostly Cloudy

61°F

16°C

Humidity 90%
Wind Speed N 7 mph
Barometer 29.91 in (1012.4 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 10 May 1:53 am CDT
Extended Forecast for

Caseyville IL

  • Overnight

    Overnight: Scattered showers, mainly before 2am. Mostly cloudy, with a low around 57. North wind 5 to 7 mph. Chance of precipitation is 40%.

    Low: 57 °F

    Scattered
    Showers

  • Sunday

    Sunday: Mostly sunny, with a high near 70. North wind around 8 mph.

    High: 70 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 48. North wind around 6 mph becoming calm in the evening.

    Low: 48 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 75. Calm wind becoming northwest 5 to 7 mph in the afternoon.

    High: 75 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 52. Light and variable wind.

    Low: 52 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 83.

    High: 83 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 60.

    Low: 60 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Sunny, with a high near 77.

    High: 77 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 51.

    Low: 51 °F

    Clear

Detailed Forecast

Overnight
Scattered showers, mainly before 2am. Mostly cloudy, with a low around 57. North wind 5 to 7 mph. Chance of precipitation is 40%.
Sunday
Mostly sunny, with a high near 70. North wind around 8 mph.
Sunday Night
Partly cloudy, with a low around 48. North wind around 6 mph becoming calm in the evening.
Monday
Sunny, with a high near 75. Calm wind becoming northwest 5 to 7 mph in the afternoon.
Monday Night
Mostly clear, with a low around 52. Light and variable wind.
Tuesday
Sunny, with a high near 83.
Tuesday Night
A 40 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 60.
Wednesday
Sunny, with a high near 77.
Wednesday Night
Clear, with a low around 51.
Thursday
Sunny, with a high near 76.
Thursday Night
A 20 percent chance of showers. Partly cloudy, with a low around 58.
Friday
A 20 percent chance of showers. Mostly sunny, with a high near 87.
Friday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 67.
Saturday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Caseyville IL
 38.64°N 90.03°W (Elev. 446 ft)
Last Update:
1:25 am CDT May 10, 2026
Forecast Valid:
1am CDT May 10, 2026-6pm CDT May 16, 2026
 
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