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.

A Few Clouds

42°F

6°C

Humidity 41%
Wind Speed NW 15 mph
Barometer 30.22 in (1023.7 mb)
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Wind Chill34°F (1°C)
Last update 21 Feb 3:53 pm CST
Extended Forecast for

Millstadt IL

  • Tonight

    Tonight: Mostly clear, with a low around 23. Northwest wind 9 to 16 mph, with gusts as high as 26 mph.

    Low: 23 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 32. Breezy, with a northwest wind 17 to 21 mph, with gusts as high as 31 mph.

    High: 32 °F

    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 17. Northwest wind 15 to 17 mph, with gusts as high as 28 mph.

    Low: 17 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 33. Northwest wind 6 to 15 mph, with gusts as high as 24 mph.

    High: 33 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 20. Calm wind becoming south 5 to 7 mph after midnight.

    Low: 20 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 53.

    High: 53 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 42.

    Low: 42 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 58.

    High: 58 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A 40 percent chance of rain, mainly after midnight. Mostly cloudy, with a low around 36.

    Low: 36 °F

    Chance Rain

Detailed Forecast

Tonight
Mostly clear, with a low around 23. Northwest wind 9 to 16 mph, with gusts as high as 26 mph.
Sunday
Sunny, with a high near 32. Breezy, with a northwest wind 17 to 21 mph, with gusts as high as 31 mph.
Sunday Night
Mostly clear, with a low around 17. Northwest wind 15 to 17 mph, with gusts as high as 28 mph.
Monday
Sunny, with a high near 33. Northwest wind 6 to 15 mph, with gusts as high as 24 mph.
Monday Night
Partly cloudy, with a low around 20. Calm wind becoming south 5 to 7 mph after midnight.
Tuesday
Partly sunny, with a high near 53.
Tuesday Night
Mostly cloudy, with a low around 42.
Wednesday
Partly sunny, with a high near 58.
Wednesday Night
A 40 percent chance of rain, mainly after midnight. Mostly cloudy, with a low around 36.
Thursday
A 40 percent chance of rain. Mostly sunny, with a high near 51.
Thursday Night
Mostly clear, with a low around 30.
Friday
Sunny, with a high near 60.
Friday Night
Mostly clear, with a low around 40.
Saturday
Mostly sunny, with a high near 62.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Millstadt IL
 38.48°N 90.1°W (Elev. 571 ft)
Last Update:
12:26 pm CST Feb 21, 2026
Forecast Valid:
4pm CST Feb 21, 2026-6pm CST Feb 28, 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