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.

Fair

81°F

27°C

Humidity 69%
Wind Speed SW 6 mph
Barometer 30.17 in (1021.1 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 7 Aug 8:53 am CDT
Extended Forecast for

Caseyville IL

  • Today

    Today: Scattered showers and thunderstorms, mainly after 3pm. Increasing clouds, with a high near 92. Southwest wind 5 to 8 mph becoming southeast in the afternoon. Chance of precipitation is 30%.

    High: 92 °F

    Sunny then
    Scattered
    T-storms

  • Tonight

    Tonight: Scattered showers and thunderstorms. Partly cloudy, with a low around 73. Southeast wind 5 to 7 mph. Chance of precipitation is 30%.

    Low: 73 °F

    Scattered
    T-storms

  • Friday

    Friday: Isolated showers before 9am. Sunny, with a high near 96. Heat index values as high as 103. South wind 6 to 11 mph. Chance of precipitation is 20%.

    High: 96 °F

    Isolated
    Showers then
    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 75. South wind 6 to 9 mph.

    Low: 75 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 95. South wind 6 to 11 mph.

    High: 95 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 74.

    Low: 74 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 94.

    High: 94 °F

    Sunny

  • Sunday Night

    Sunday Night: A 20 percent chance of showers after 1am. Mostly clear, with a low around 74.

    Low: 74 °F

    Mostly Clear
    then Slight
    Chance
    Showers

  • Monday

    Monday: A slight chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 94. Chance of precipitation is 20%.

    High: 94 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

Detailed Forecast

Today
Scattered showers and thunderstorms, mainly after 3pm. Increasing clouds, with a high near 92. Southwest wind 5 to 8 mph becoming southeast in the afternoon. Chance of precipitation is 30%.
Tonight
Scattered showers and thunderstorms. Partly cloudy, with a low around 73. Southeast wind 5 to 7 mph. Chance of precipitation is 30%.
Friday
Isolated showers before 9am. Sunny, with a high near 96. Heat index values as high as 103. South wind 6 to 11 mph. Chance of precipitation is 20%.
Friday Night
Mostly clear, with a low around 75. South wind 6 to 9 mph.
Saturday
Sunny, with a high near 95. South wind 6 to 11 mph.
Saturday Night
Mostly clear, with a low around 74.
Sunday
Sunny, with a high near 94.
Sunday Night
A 20 percent chance of showers after 1am. Mostly clear, with a low around 74.
Monday
A slight chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 94. Chance of precipitation is 20%.
Monday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 74.
Tuesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.
Tuesday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73.
Wednesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92.
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ABOUT THIS FORECAST

 
Point Forecast:
Caseyville IL
 38.64°N 90.03°W (Elev. 446 ft)
Last Update:
10:26 am CDT Aug 7, 2025
Forecast Valid:
10am CDT Aug 7, 2025-6pm CDT Aug 13, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation