Current conditions at

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

Lat: 38.66°NLon: 90.66°WElev: 463ft.

Fair

77°F

25°C

Humidity 48%
Wind Speed NE 8 mph
Barometer 30.14 in (1020.2 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 31 Aug 6:54 pm CDT
Extended Forecast for

Ballwin MO

  • Tonight

    Tonight: Mostly cloudy, with a low around 61. East wind around 6 mph becoming calm  in the evening.

    Low: 61 °F

    Mostly Cloudy

  • Labor Day

    Labor Day: Partly sunny, with a high near 79. Calm wind becoming east around 5 mph in the afternoon.

    High: 79 °F

    Partly Sunny

  • Monday Night

    Monday Night: A 20 percent chance of showers after 1am.  Mostly cloudy, with a low around 62. Light northeast wind.

    Low: 62 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Tuesday

    Tuesday: A 20 percent chance of showers before 1pm.  Partly sunny, with a high near 79. Light north wind.

    High: 79 °F

    Slight Chance
    Showers

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 60. Calm wind.

    Low: 60 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 83.

    High: 83 °F

    Sunny

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 54. Chance of precipitation is 50%.

    Low: 54 °F

    Chance
    Showers

  • Thursday

    Thursday: Mostly sunny, with a high near 73.

    High: 73 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 54.

    Low: 54 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 61. East wind around 6 mph becoming calm in the evening.
Labor Day
Partly sunny, with a high near 79. Calm wind becoming east around 5 mph in the afternoon.
Monday Night
A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 62. Light northeast wind.
Tuesday
A 20 percent chance of showers before 1pm. Partly sunny, with a high near 79. Light north wind.
Tuesday Night
Mostly clear, with a low around 60. Calm wind.
Wednesday
Sunny, with a high near 83.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 54. Chance of precipitation is 50%.
Thursday
Mostly sunny, with a high near 73.
Thursday Night
Mostly clear, with a low around 54.
Friday
Mostly sunny, with a high near 80.
Friday Night
Mostly clear, with a low around 54.
Saturday
Sunny, with a high near 77.
Saturday Night
Mostly clear, with a low around 53.
Sunday
Sunny, with a high near 77.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Ballwin MO
 38.61°N 90.54°W (Elev. 597 ft)
5:41 pm CDT Aug 31, 2025
7pm CDT Aug 31, 2025-6pm CDT Sep 7, 2025
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database