National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

St. Louis, Spirit Of St. Louis Airport (KSUS)

Lat: 38.66°NLon: 90.66°WElev: 463ft.

Overcast

30°F

-1°C

Humidity 38%
Wind Speed SW 6 mph
Barometer 30.24 in (1025.4 mb)
Dewpoint 7°F (-14°C)
Visibility 10.00 mi
Wind Chill24°F (-4°C)
Last update 28 Jan 2:54 pm CST
Extended Forecast for

Ballwin MO

  • Tonight

    Tonight: Mostly cloudy, with a low around 12. Calm wind becoming northeast around 5 mph.

    Low: 12 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 24. Northeast wind 3 to 7 mph.

    High: 24 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: A 40 percent chance of snow, mainly before midnight. Cloudy, with a low around 8. Northeast wind 5 to 7 mph becoming calm after midnight.

    Low: 8 °F

    Chance Snow

  • Friday

    Friday: Partly sunny and cold, with a high near 20. North wind 3 to 8 mph.

    High: 20 °F

    Cold

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 4. North wind 6 to 8 mph.

    Low: 4 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny and cold, with a high near 19.

    High: 19 °F

    Cold

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 3.

    Low: 3 °F

    Partly Cloudy

  • Sunday

    Sunday: A 20 percent chance of snow after noon. Mostly sunny, with a high near 30.

    High: 30 °F

    Mostly Sunny
    then Slight
    Chance Snow

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 16.

    Low: 16 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 12. Calm wind becoming northeast around 5 mph.
Thursday
Mostly cloudy, with a high near 24. Northeast wind 3 to 7 mph.
Thursday Night
A 40 percent chance of snow, mainly before midnight. Cloudy, with a low around 8. Northeast wind 5 to 7 mph becoming calm after midnight.
Friday
Partly sunny and cold, with a high near 20. North wind 3 to 8 mph.
Friday Night
Mostly cloudy, with a low around 4. North wind 6 to 8 mph.
Saturday
Mostly sunny and cold, with a high near 19.
Saturday Night
Partly cloudy, with a low around 3.
Sunday
A 20 percent chance of snow after noon. Mostly sunny, with a high near 30.
Sunday Night
Mostly cloudy, with a low around 16.
Monday
Partly sunny, with a high near 37.
Monday Night
Partly cloudy, with a low around 21.
Tuesday
A 20 percent chance of rain. Mostly cloudy, with a high near 39.
Tuesday Night
A chance of rain and snow. Mostly cloudy, with a low around 27. Chance of precipitation is 30%.
Wednesday
A chance of rain and snow. Mostly cloudy, with a high near 38. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Ballwin MO
 38.58°N 90.55°W (Elev. 584 ft)
Last Update:
3:16 pm CST Jan 28, 2026
Forecast Valid:
3pm CST Jan 28, 2026-6pm CST Feb 4, 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