Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

76°F

24°C

Humidity 67%
Wind Speed E 5 mph
Barometer 29.91 in (1012.4 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 20 Jun 8:53 pm CDT
Extended Forecast for

3 Miles E Caseyville IL

Flood Watch June 21, 07:00am until June 22, 07:00am
Click here for hazard details and duration
Flood Watch
  • Tonight

    Tonight: Increasing clouds, with a low around 67. East wind 3 to 6 mph.

    Low: 67 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Showers and thunderstorms, mainly before 3pm.  High near 84. Southeast wind 8 to 17 mph becoming south in the afternoon. Winds could gust as high as 28 mph.  Chance of precipitation is 80%.

    High: 84 °F

    T-storms

  • Sunday Night

    Sunday Night: Showers and thunderstorms before 4am, then a slight chance of showers.  Low around 67. South wind 10 to 13 mph becoming northwest in the evening. Winds could gust as high as 21 mph.  Chance of precipitation is 90%.

    Low: 67 °F

    T-storms then
    Chance
    T-storms

  • Monday

    Monday: A slight chance of showers between 7am and 10am.  Cloudy, then gradually becoming mostly sunny, with a high near 77. North wind 9 to 11 mph.  Chance of precipitation is 20%.

    High: 77 °F

    Slight Chance
    Showers then
    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 62. North wind 5 to 9 mph becoming calm  in the evening.

    Low: 62 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 64.

    Low: 64 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 84.

    High: 84 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 64.

    Low: 64 °F

    Partly Cloudy

Detailed Forecast

Tonight
Increasing clouds, with a low around 67. East wind 3 to 6 mph.
Sunday
Showers and thunderstorms, mainly before 3pm. High near 84. Southeast wind 8 to 17 mph becoming south in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 80%.
Sunday Night
Showers and thunderstorms before 4am, then a slight chance of showers. Low around 67. South wind 10 to 13 mph becoming northwest in the evening. Winds could gust as high as 21 mph. Chance of precipitation is 90%.
Monday
A slight chance of showers between 7am and 10am. Cloudy, then gradually becoming mostly sunny, with a high near 77. North wind 9 to 11 mph. Chance of precipitation is 20%.
Monday Night
Partly cloudy, with a low around 62. North wind 5 to 9 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 81.
Tuesday Night
Mostly clear, with a low around 64.
Wednesday
Mostly sunny, with a high near 84.
Wednesday Night
Partly cloudy, with a low around 64.
Thursday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 82.
Thursday Night
A 20 percent chance of showers. Partly cloudy, with a low around 63.
Friday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 84.
Friday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67.
Saturday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 86.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles E Caseyville IL
 38.63°N 89.98°W (Elev. 558 ft)
9:31 pm CDT Jun 20, 2026
9pm CDT Jun 20, 2026-6pm CDT Jun 27, 2026
 
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Additional Resources

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