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.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

3 Miles WSW Millstadt IL

  • Tonight

    Tonight: Clear, with a low around 45. Southwest wind 7 to 9 mph.

    Low: 45 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 75. South wind 8 to 16 mph, with gusts as high as 29 mph.

    High: 75 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 61. South wind 9 to 11 mph, with gusts as high as 21 mph.

    Low: 61 °F

    Mostly Clear

  • Tuesday

    Tuesday: A slight chance of showers, then a chance of showers and thunderstorms after 10am. Increasing clouds, with a high near 80. South wind 8 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 40%.

    High: 80 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm. Low around 54. Southwest wind 14 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 90%.

    Low: 54 °F

    Showers

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm before 1pm, then showers likely. High near 65. Breezy. Chance of precipitation is 100%.

    High: 65 °F

    Showers and
    Breezy

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 38. Breezy.

    Low: 38 °F

    Slight Chance
    Showers and
    Breezy

  • Thursday

    Thursday: Sunny, with a high near 54.

    High: 54 °F

    Sunny

  • Thursday Night

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

    Low: 44 °F

    Partly Cloudy

Detailed Forecast

Tonight
Clear, with a low around 45. Southwest wind 7 to 9 mph.
Monday
Sunny, with a high near 75. South wind 8 to 16 mph, with gusts as high as 29 mph.
Monday Night
Mostly clear, with a low around 61. South wind 9 to 11 mph, with gusts as high as 21 mph.
Tuesday
A slight chance of showers, then a chance of showers and thunderstorms after 10am. Increasing clouds, with a high near 80. South wind 8 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 40%.
Tuesday Night
Showers and possibly a thunderstorm. Low around 54. Southwest wind 14 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 90%.
Wednesday
Showers and possibly a thunderstorm before 1pm, then showers likely. High near 65. Breezy. Chance of precipitation is 100%.
Wednesday Night
A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 38. Breezy.
Thursday
Sunny, with a high near 54.
Thursday Night
Partly cloudy, with a low around 44.
Friday
Mostly sunny, with a high near 65.
Friday Night
Partly cloudy, with a low around 39.
Saturday
Partly sunny, with a high near 58.
Saturday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 44.
Sunday
A 50 percent chance of showers. Mostly cloudy, with a high near 63.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WSW Millstadt IL
 38.44°N 90.13°W (Elev. 650 ft)
Last Update:
6:16 pm CDT Mar 8, 2026
Forecast Valid:
9pm CDT Mar 8, 2026-6pm CDT Mar 15, 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