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.

Fair

53°F

12°C

Humidity 30%
Wind Speed SE 12 mph
Barometer 30.38 in (1029.1 mb)
Dewpoint 22°F (-6°C)
Visibility 10.00 mi
Wind Chill49°F (9°C)
Last update 28 Mar 6:53 pm CDT
Extended Forecast for

3 Miles WSW Millstadt IL

  • Tonight

    Tonight: Increasing clouds, with a low around 39. South wind around 7 mph.

    Low: 39 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Mostly sunny, with a high near 69. South wind 7 to 14 mph, with gusts as high as 22 mph.

    High: 69 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, then gradually becoming clear, with a low around 55. South wind around 11 mph, with gusts as high as 20 mph.

    Low: 55 °F

    Decreasing
    Clouds

  • Monday

    Monday: Sunny, with a high near 82. South wind 13 to 17 mph, with gusts as high as 28 mph.

    High: 82 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 65. South wind around 16 mph, with gusts as high as 25 mph.

    Low: 65 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 40 percent chance of rain and thunderstorms after 1pm. Partly sunny, with a high near 83.

    High: 83 °F

    Partly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Rain likely and possibly a thunderstorm, then rain after 1am. Low around 47. Chance of precipitation is 80%.

    Low: 47 °F

    Rain

  • Wednesday

    Wednesday: Rain likely, mainly before 1pm. Mostly cloudy, with a high near 55. Chance of precipitation is 60%.

    High: 55 °F

    Rain Likely

  • Wednesday Night

    Wednesday Night: Rain likely, mainly after 1am. Mostly cloudy, with a low around 43. Chance of precipitation is 60%.

    Low: 43 °F

    Rain Likely

Detailed Forecast

Tonight
Increasing clouds, with a low around 39. South wind around 7 mph.
Sunday
Mostly sunny, with a high near 69. South wind 7 to 14 mph, with gusts as high as 22 mph.
Sunday Night
Mostly cloudy, then gradually becoming clear, with a low around 55. South wind around 11 mph, with gusts as high as 20 mph.
Monday
Sunny, with a high near 82. South wind 13 to 17 mph, with gusts as high as 28 mph.
Monday Night
Partly cloudy, with a low around 65. South wind around 16 mph, with gusts as high as 25 mph.
Tuesday
A 40 percent chance of rain and thunderstorms after 1pm. Partly sunny, with a high near 83.
Tuesday Night
Rain likely and possibly a thunderstorm, then rain after 1am. Low around 47. Chance of precipitation is 80%.
Wednesday
Rain likely, mainly before 1pm. Mostly cloudy, with a high near 55. Chance of precipitation is 60%.
Wednesday Night
Rain likely, mainly after 1am. Mostly cloudy, with a low around 43. Chance of precipitation is 60%.
Thursday
Rain likely, mainly before 1pm. Mostly cloudy, with a high near 58. Chance of precipitation is 60%.
Thursday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 44.
Friday
A 30 percent chance of rain. Mostly cloudy, with a high near 70.
Friday Night
A 50 percent chance of rain and thunderstorms. Mostly cloudy, with a low around 53.
Saturday
Rain likely. Mostly cloudy, with a high near 69. Chance of precipitation is 60%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WSW Millstadt IL
 38.44°N 90.13°W (Elev. 650 ft)
Last Update:
6:01 pm CDT Mar 28, 2026
Forecast Valid:
7pm CDT Mar 28, 2026-6pm CDT Apr 4, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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