7-Day Forecast 38.54°N 89.84°W (Text-Only)
NWS Forecast for: Scott Air Force Base / Belleville IL
Issued by: National Weather Service Saint Louis, MO
Last Update: 10:37 pm CDT Jul 13, 2025
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  • Overnight

    Overnight: Patchy fog after 1am.  Otherwise, mostly cloudy, with a low around 69. Calm wind.

    Low: 69 °F

    Patchy Fog



  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 3pm.  Widespread dense fog, mainly before 7am.  Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 86. Light and variable wind.

    High: 86 °F

    Dense Fog
    then Slight
    Chance
    T-storms

  • Monday
    Night

    Monday Night: Mostly cloudy, with a low around 72. South wind around 5 mph becoming calm  in the evening.

    Low: 72 °F

    Mostly Cloudy



  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms after 1pm.  Partly sunny, with a high near 89. Calm wind becoming south around 6 mph in the afternoon.

    High: 89 °F

    Partly Sunny
    then Chance
    T-storms

  • Tuesday
    Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms.  Partly cloudy, with a low around 72. South wind around 5 mph becoming calm  in the evening.

    Low: 72 °F

    Slight Chance
    T-storms


  • Wednesday

    Wednesday: A slight chance of showers, then a chance of showers and thunderstorms after 10am.  Mostly sunny, with a high near 91. Chance of precipitation is 30%.

    High: 91 °F

    Chance
    T-storms


  • Wednesday
    Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms.  Partly cloudy, with a low around 74.

    Low: 74 °F

    Slight Chance
    T-storms


  • Thursday

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

    High: 92 °F

    Sunny then
    Chance
    T-storms

  • Thursday
    Night

    Thursday 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




  • Overnight: Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 69. Calm wind.

    Monday: A 20 percent chance of showers and thunderstorms after 3pm. Widespread dense fog, mainly before 7am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 86. Light and variable wind.

    Monday Night: Mostly cloudy, with a low around 72. South wind around 5 mph becoming calm in the evening.

    Tuesday: A 50 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 89. Calm wind becoming south around 6 mph in the afternoon.

    Tuesday Night: A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72. South wind around 5 mph becoming calm in the evening.

    Wednesday: A slight chance of showers, then a chance of showers and thunderstorms after 10am. Mostly sunny, with a high near 91. Chance of precipitation is 30%.

    Wednesday Night: A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 74.

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

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

    Friday: A 30 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 90.

    Friday Night: A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72.

    Saturday: A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.

    Saturday Night: A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72.

    Sunday: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.



    Scott Air Force Base / Belleville IL
     38.54°N 89.84°W (Elev. 417 ft)

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