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.

Overcast

15°F

-9°C

Humidity 61%
Wind Speed S 3 mph
Barometer 30.45 in (1031.8 mb)
Dewpoint 4°F (-16°C)
Visibility 10.00 mi
Last update 20 Jan 5:53 am CST
Extended Forecast for

3 Miles WSW Millstadt IL

  • Today

    Today: Mostly cloudy, then gradually becoming sunny, with a high near 36. Light southwest wind becoming south 8 to 13 mph in the morning.

    High: 36 °F

    Decreasing
    Clouds

  • Tonight

    Tonight: Increasing clouds, with a low around 26. Southwest wind 11 to 14 mph, with gusts as high as 24 mph.

    Low: 26 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Mostly cloudy, then gradually becoming sunny, with a high near 45. West wind 7 to 13 mph, with gusts as high as 22 mph.

    High: 45 °F

    Decreasing
    Clouds

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 24. West wind 6 to 8 mph becoming northwest after midnight.

    Low: 24 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 37. Northwest wind 3 to 6 mph.

    High: 37 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 12.

    Low: 12 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy and cold, with a high near 19.

    High: 19 °F

    Cold

  • Friday Night

    Friday Night: A 30 percent chance of snow. Mostly cloudy, with a low around 4.

    Low: 4 °F

    Chance Snow

  • Saturday

    Saturday: A 40 percent chance of snow. Mostly cloudy and cold, with a high near 15.

    High: 15 °F

    Chance Snow

Detailed Forecast

Today
Mostly cloudy, then gradually becoming sunny, with a high near 36. Light southwest wind becoming south 8 to 13 mph in the morning.
Tonight
Increasing clouds, with a low around 26. Southwest wind 11 to 14 mph, with gusts as high as 24 mph.
Wednesday
Mostly cloudy, then gradually becoming sunny, with a high near 45. West wind 7 to 13 mph, with gusts as high as 22 mph.
Wednesday Night
Mostly clear, with a low around 24. West wind 6 to 8 mph becoming northwest after midnight.
Thursday
Mostly sunny, with a high near 37. Northwest wind 3 to 6 mph.
Thursday Night
Mostly cloudy, with a low around 12.
Friday
Mostly cloudy and cold, with a high near 19.
Friday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 4.
Saturday
A 40 percent chance of snow. Mostly cloudy and cold, with a high near 15.
Saturday Night
A 30 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 7.
Sunday
Mostly sunny, with a high near 23.
Sunday Night
Mostly clear, with a low around 7.
Monday
Sunny, with a high near 28.
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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:
4:36 am CST Jan 20, 2026
Forecast Valid:
6am CST Jan 20, 2026-6pm CST Jan 26, 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