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

32°F

0°C

Humidity 32%
Wind Speed S 7 mph
Barometer 29.96 in (1014.9 mb)
Dewpoint 5°F (-15°C)
Visibility 10.00 mi
Wind Chill25°F (-4°C)
Last update 15 Jan 3:53 pm CST
Extended Forecast for

3 Miles WSW Millstadt IL

  • Tonight

    Tonight: A chance of snow between 9pm and midnight. Cloudy, then gradually becoming partly cloudy, with a temperature rising to around 34 by 4am. South wind 6 to 10 mph becoming southwest after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 30%.

    Low: 28 °F⇑

    Chance Snow
    then Mostly
    Cloudy

  • Friday

    Friday: A chance of sprinkles between 4pm and 5pm, then a slight chance of snow after 5pm. Increasing clouds, with a high near 45. West wind 9 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 20%.

    High: 45 °F

    Partly Sunny
    then Slight
    Chance
    Sprinkles/Snow

  • Friday Night

    Friday Night: A chance of rain before 7pm, then a chance of snow. Mostly cloudy, with a low around 21. Northwest wind around 14 mph, with gusts as high as 24 mph. Chance of precipitation is 40%.

    Low: 21 °F

    Chance
    Rain/Snow
    then Slight
    Chance Snow

  • Saturday

    Saturday: Partly sunny, with a high near 26. West wind 11 to 14 mph, with gusts as high as 23 mph.

    High: 26 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 12. Northwest wind 7 to 10 mph.

    Low: 12 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 29.

    High: 29 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 15.

    Low: 15 °F

    Partly Cloudy

  • M.L.King Day

    M.L.King Day: Sunny, with a high near 23.

    High: 23 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 10.

    Low: 10 °F

    Mostly Clear

Detailed Forecast

Tonight
A chance of snow between 9pm and midnight. Cloudy, then gradually becoming partly cloudy, with a temperature rising to around 34 by 4am. South wind 6 to 10 mph becoming southwest after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 30%.
Friday
A chance of sprinkles between 4pm and 5pm, then a slight chance of snow after 5pm. Increasing clouds, with a high near 45. West wind 9 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 20%.
Friday Night
A chance of rain before 7pm, then a chance of snow. Mostly cloudy, with a low around 21. Northwest wind around 14 mph, with gusts as high as 24 mph. Chance of precipitation is 40%.
Saturday
Partly sunny, with a high near 26. West wind 11 to 14 mph, with gusts as high as 23 mph.
Saturday Night
Partly cloudy, with a low around 12. Northwest wind 7 to 10 mph.
Sunday
Mostly sunny, with a high near 29.
Sunday Night
Partly cloudy, with a low around 15.
M.L.King Day
Sunny, with a high near 23.
Monday Night
Mostly clear, with a low around 10.
Tuesday
Sunny, with a high near 35.
Tuesday Night
Mostly clear, with a low around 24.
Wednesday
Mostly sunny, with a high near 44.
Wednesday Night
Partly cloudy, with a low around 22.
Thursday
Mostly sunny, with a high near 41.
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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:
4:46 pm CST Jan 15, 2026
Forecast Valid:
4pm CST Jan 15, 2026-6pm CST Jan 22, 2026
 
Forecast Discussion
 
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Additional Resources

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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