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

76°F

24°C

Humidity 79%
Wind Speed W 7 mph
Barometer 30.03 in (1016.0 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index77°F (25°C)
Last update 14 Oct 2:54 pm CDT
Extended Forecast for

Ballwin MO

  • This Afternoon

    This Afternoon: A chance of showers and thunderstorms before 4pm, then a slight chance of showers. Cloudy, with a high near 76. Light northwest wind. Chance of precipitation is 30%.

    High: 76 °F

    Chance
    Showers

  • Tonight

    Tonight: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5am. Cloudy, with a low around 67. Light and variable wind. Chance of precipitation is 60%.

    Low: 67 °F

    Cloudy then
    Showers
    Likely

  • Thursday

    Thursday: Showers and thunderstorms, mainly before 1pm. High near 82. Light and variable wind becoming south 5 to 7 mph in the morning. Chance of precipitation is 90%.

    High: 82 °F

    Showers then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 3am, then a slight chance of showers between 3am and 4am. Mostly cloudy, with a low around 50. Northwest wind 6 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 50%.

    Low: 50 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: Mostly cloudy, with a high near 56. Northwest wind around 16 mph, with gusts as high as 29 mph.

    High: 56 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 41.

    Low: 41 °F

    Mostly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 61.

    High: 61 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 39.

    Low: 39 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 67.

    High: 67 °F

    Sunny

Detailed Forecast

This Afternoon
A chance of showers and thunderstorms before 4pm, then a slight chance of showers. Cloudy, with a high near 76. Light northwest wind. Chance of precipitation is 30%.
Tonight
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5am. Cloudy, with a low around 67. Light and variable wind. Chance of precipitation is 60%.
Thursday
Showers and thunderstorms, mainly before 1pm. High near 82. Light and variable wind becoming south 5 to 7 mph in the morning. Chance of precipitation is 90%.
Thursday Night
A chance of showers and thunderstorms before 3am, then a slight chance of showers between 3am and 4am. Mostly cloudy, with a low around 50. Northwest wind 6 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 50%.
Friday
Mostly cloudy, with a high near 56. Northwest wind around 16 mph, with gusts as high as 29 mph.
Friday Night
Mostly cloudy, with a low around 41.
Saturday
Sunny, with a high near 61.
Saturday Night
Clear, with a low around 39.
Sunday
Sunny, with a high near 67.
Sunday Night
Mostly clear, with a low around 43.
Monday
Mostly sunny, with a high near 73.
Monday Night
Partly cloudy, with a low around 46.
Tuesday
Mostly sunny, with a high near 76.
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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:
2:06 pm CDT Oct 14, 2026
Forecast Valid:
2pm CDT Oct 14, 2026-6pm CDT Oct 20, 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