National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
7-Day Forecast 38.86°N 90.22°W (Text-Only)
NWS Forecast for: West Alton MO
Issued by: National Weather Service Saint Louis, MO
Last Update: 8:37 pm CDT Jul 12, 2025		Print

  • Tonight

    Tonight: Partly cloudy, with a low around 72. Calm wind.

    Low: 72 °F

    Partly Cloudy



  • Sunday

    Sunday: A 40 percent chance of showers and thunderstorms, mainly after noon. Mostly cloudy, with a high near 86. Light and variable wind.

    High: 86 °F

    Chance
    T-storms


  • Sunday
    Night

    Sunday Night: Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 70. Light and variable wind.

    Low: 70 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 89. Calm wind becoming southeast around 6 mph in the afternoon.

    High: 89 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Monday
    Night

    Monday Night: A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72. Southeast wind around 6 mph becoming calm in the evening.

    Low: 72 °F

    Slight Chance
    T-storms


  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 89.

    High: 89 °F

    Partly Sunny
    then Chance
    T-storms

  • Tuesday
    Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 73.

    Low: 73 °F

    Chance
    T-storms


  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 92.

    High: 92 °F

    Chance
    T-storms


  • Wednesday
    Night

    Wednesday Night: A 40 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 74.

    Low: 74 °F

    Chance
    T-storms




    • Tonight: Partly cloudy, with a low around 72. Calm wind.

    Sunday: A 40 percent chance of showers and thunderstorms, mainly after noon. Mostly cloudy, with a high near 86. Light and variable wind.

    Sunday Night: Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 70. Light and variable wind.

    Monday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 89. Calm wind becoming southeast around 6 mph in the afternoon.

    Monday Night: A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72. Southeast wind around 6 mph becoming calm in the evening.

    Tuesday: A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 89.

    Tuesday Night: A 30 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 73.

    Wednesday: A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 92.

    Wednesday Night: A 40 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 74.

    Thursday: A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 91.

    Thursday Night: A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 71.

    Friday: A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 87.

    Friday Night: A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 70.

    Saturday: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89.


    West Alton MO
     38.86°N 90.22°W (Elev. 427 ft)

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