7-Day Forecast 38.58°N 90.55°W (Text-Only)
NWS Forecast for: Ballwin MO
Issued by: National Weather Service Saint Louis, MO
Last Update: 2:52 pm CDT Jul 13, 2025
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  • This
    Afternoon

    This Afternoon: Showers and thunderstorms likely, mainly before 5pm.  Cloudy, with a high near 29. Calm wind.  Chance of precipitation is 60%.

    High: 29 °C

    T-storms
    Likely

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 8pm.  Patchy fog after 5am.  Otherwise, mostly cloudy, with a low around 21. Calm wind.

    Low: 21 °C

    Chance
    T-storms then
    Patchy Fog

  • Monday

    Monday: Partly sunny, with a high near 31. Calm wind.

    High: 31 °C

    Partly Sunny


  • Monday
    Night

    Monday Night: Mostly cloudy, with a low around 22. Southeast wind 3 to 8 km/h.

    Low: 22 °C

    Mostly Cloudy


  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms after 1pm.  Partly sunny, with a high near 32. South wind 3 to 8 km/h.

    High: 32 °C

    Partly Sunny
    then Chance
    T-storms

  • Tuesday
    Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms before 1am.  Partly cloudy, with a low around 22.

    Low: 22 °C

    Slight Chance
    T-storms

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms, mainly after 1pm.  Mostly sunny, with a high near 33.

    High: 33 °C

    Chance
    T-storms

  • Wednesday
    Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms.  Partly cloudy, with a low around 23.

    Low: 23 °C

    Slight Chance
    T-storms

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms after 1pm.  Mostly sunny, with a high near 33.

    High: 33 °C

    Sunny then
    Chance
    T-storms



  • This Afternoon: Showers and thunderstorms likely, mainly before 5pm. Cloudy, with a high near 29. Calm wind. Chance of precipitation is 60%.

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 8pm. Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 21. Calm wind.

    Monday: Partly sunny, with a high near 31. Calm wind.

    Monday Night: Mostly cloudy, with a low around 22. Southeast wind 3 to 8 km/h.

    Tuesday: A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 32. South wind 3 to 8 km/h.

    Tuesday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 22.

    Wednesday: A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 33.

    Wednesday Night: A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 23.

    Thursday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 33.

    Thursday Night: A 30 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 22.

    Friday: A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 32.

    Friday Night: A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 22.

    Saturday: A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 33.

    Saturday Night: A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 22.

    Sunday: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 33.



    Ballwin MO
     38.58°N 90.55°W (Elev. 584 m)

    Visit your local NWS office at: https://www.weather.gov/lsx/