7-Day Forecast 39.07°N 89.87°W (Text-Only)
NWS Forecast for: Wilsonville IL
Issued by: National Weather Service Saint Louis, MO
Last Update: 2:46 pm CDT Apr 10, 2026
Print


  • Tonight

    Tonight: Mostly cloudy, with a low around 49. North wind 6 to 8 mph becoming east after midnight.

    Low: 49 °F

    Mostly Cloudy




  • Saturday

    Saturday: A 40 percent chance of showers and thunderstorms, mainly between 1pm and 5pm.  Mostly cloudy, with a high near 68. Southeast wind 8 to 10 mph.

    High: 68 °F

    Chance
    Showers



  • Saturday
    Night

    Saturday Night: A 30 percent chance of showers before 7pm.  Partly cloudy, with a low around 57. Southeast wind around 10 mph.

    Low: 57 °F

    Chance
    Showers then
    Mostly Cloudy


  • Sunday

    Sunday: A slight chance of showers and thunderstorms between 1pm and 4pm, then a slight chance of showers after 4pm.  Partly sunny, with a high near 79. Breezy, with a south wind 10 to 15 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 31 mph.  Chance of precipitation is 20%.

    High: 79 °F

    Breezy.
    Partly Sunny
    then Slight
    Chance
    T-storms

  • Sunday
    Night

    Sunday Night: A chance of showers before 7pm, then a chance of showers and thunderstorms between 7pm and 1am, then showers likely and possibly a thunderstorm after 1am.  Mostly cloudy, with a low around 63. South wind 14 to 17 mph, with gusts as high as 25 mph.  Chance of precipitation is 70%.

    Low: 63 °F

    Chance
    Showers then
    Showers
    Likely

  • Monday

    Monday: A 40 percent chance of showers and thunderstorms, mainly between 10am and 1pm.  Mostly sunny, with a high near 83.

    High: 83 °F

    Chance
    Showers



  • Monday
    Night

    Monday Night: A 20 percent chance of showers and thunderstorms before 1am.  Partly cloudy, with a low around 65.

    Low: 65 °F

    Slight Chance
    T-storms



  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms, mainly after 1pm.  Partly sunny, with a high near 84.

    High: 84 °F

    Chance
    T-storms



  • Tuesday
    Night

    Tuesday Night: A 50 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 65.

    Low: 65 °F

    Chance
    T-storms





  • Tonight: Mostly cloudy, with a low around 49. North wind 6 to 8 mph becoming east after midnight.

    Saturday: A 40 percent chance of showers and thunderstorms, mainly between 1pm and 5pm. Mostly cloudy, with a high near 68. Southeast wind 8 to 10 mph.

    Saturday Night: A 30 percent chance of showers before 7pm. Partly cloudy, with a low around 57. Southeast wind around 10 mph.

    Sunday: A slight chance of showers and thunderstorms between 1pm and 4pm, then a slight chance of showers after 4pm. Partly sunny, with a high near 79. Breezy, with a south wind 10 to 15 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 31 mph. Chance of precipitation is 20%.

    Sunday Night: A chance of showers before 7pm, then a chance of showers and thunderstorms between 7pm and 1am, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 63. South wind 14 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 70%.

    Monday: A 40 percent chance of showers and thunderstorms, mainly between 10am and 1pm. Mostly sunny, with a high near 83.

    Monday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 65.

    Tuesday: A 40 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 84.

    Tuesday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65.

    Wednesday: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 81.

    Wednesday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 59.

    Thursday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 76.

    Thursday Night: A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 58.

    Friday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 80.



    Wilsonville IL
     39.07°N 89.87°W (Elev. 636 ft)

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