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

71°F

22°C

Humidity 73%
Wind Speed SE 6 mph
Barometer 29.88 in (1011.5 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 21 Jun 6:53 am CDT
Extended Forecast for

4 Miles WNW Millstadt IL

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

    NOW until 7:00am Mon

    Flood Watch

  • Today

    High: 85 °F

    T-storms
    Likely

  • Tonight

    Tonight: Showers and thunderstorms, mainly before midnight. Low around 65. South wind 8 to 10 mph becoming northwest after midnight. Chance of precipitation is 90%.

    Low: 65 °F

    T-storms then
    Chance
    T-storms

  • Monday

    Monday: Mostly cloudy, with a high near 77. North wind around 10 mph.

    High: 77 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 61. Northeast wind 3 to 8 mph.

    Low: 61 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 81. Light northeast wind.

    High: 81 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 63.

    Low: 63 °F

    Mostly Clear

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 84.

    High: 84 °F

    Slight Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 65.

    Low: 65 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

Detailed Forecast

Today
Showers and thunderstorms likely, mainly after 1pm. Mostly cloudy, with a high near 85. South wind 7 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 60%.
Tonight
Showers and thunderstorms, mainly before midnight. Low around 65. South wind 8 to 10 mph becoming northwest after midnight. Chance of precipitation is 90%.
Monday
Mostly cloudy, with a high near 77. North wind around 10 mph.
Monday Night
Partly cloudy, with a low around 61. Northeast wind 3 to 8 mph.
Tuesday
Mostly sunny, with a high near 81. Light northeast wind.
Tuesday Night
Mostly clear, with a low around 63.
Wednesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 84.
Wednesday Night
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 65.
Thursday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 84.
Thursday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 64. Chance of precipitation is 20%.
Friday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 84.
Friday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 68.
Saturday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 87.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WNW Millstadt IL
 38.48°N 90.15°W (Elev. 548 ft)
Last Update:
6:56 am CDT Jun 21, 2026
Forecast Valid:
7am CDT Jun 21, 2026-6pm CDT Jun 27, 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