7-Day Forecast 41.9°N 88.32°W (Text-Only)
NWS Forecast for: Saint Charles IL
Issued by: National Weather Service Chicago, IL
Last Update: 3:24 pm CDT Jul 10, 2025
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  • This
    Afternoon

    This Afternoon: Isolated showers and thunderstorms after 4pm.  Partly sunny, with a high near 30. South southeast wind around 10 km/h.  Chance of precipitation is 20%.

    High: 30 °C

    Isolated
    T-storms


  • Tonight

    Tonight: Scattered showers and thunderstorms, then showers likely and possibly a thunderstorm after midnight.  Mostly cloudy, with a low around 21. South wind around 10 km/h becoming east in the evening.  Chance of precipitation is 70%. New rainfall amounts between 1 and 2 cm possible.

    Low: 21 °C

    Scattered
    T-storms then
    Showers
    Likely

  • Friday

    Friday: Scattered showers and thunderstorms, mainly after 1pm.  Partly sunny, with a high near 33. Heat index values as high as 37. South southwest wind 10 to 15 km/h, with gusts as high as 25 km/h.  Chance of precipitation is 50%.

    High: 33 °C

    Scattered
    T-storms


  • Friday
    Night

    Friday Night: Scattered showers and thunderstorms.  Mostly cloudy, with a low around 22. South southwest wind 10 to 15 km/h, with gusts as high as 25 km/h.  Chance of precipitation is 50%.

    Low: 22 °C

    Scattered
    T-storms


  • Saturday

    Saturday: Showers and thunderstorms likely, mainly between 1pm and 4pm, then showers likely and possibly a thunderstorm after 4pm.  Partly sunny, with a high near 31. South southwest wind 10 to 20 km/h, with gusts as high as 35 km/h.  Chance of precipitation is 70%.

    High: 31 °C

    Chance
    T-storms then
    T-storms
    Likely

  • Saturday
    Night

    Saturday Night: A 30 percent chance of showers and thunderstorms, mainly before 7pm.  Partly cloudy, with a low around 19.

    Low: 19 °C

    Chance
    T-storms then
    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 29.

    High: 29 °C

    Mostly Sunny



  • Sunday
    Night

    Sunday Night: Mostly clear, with a low around 18.

    Low: 18 °C

    Mostly Clear



  • Monday

    Monday: Sunny, with a high near 32.

    High: 32 °C

    Sunny





  • This Afternoon: Isolated showers and thunderstorms after 4pm. Partly sunny, with a high near 30. South southeast wind around 10 km/h. Chance of precipitation is 20%.

    Tonight: Scattered showers and thunderstorms, then showers likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 21. South wind around 10 km/h becoming east in the evening. Chance of precipitation is 70%. New rainfall amounts between 1 and 2 cm possible.

    Friday: Scattered showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 33. Heat index values as high as 37. South southwest wind 10 to 15 km/h, with gusts as high as 25 km/h. Chance of precipitation is 50%.

    Friday Night: Scattered showers and thunderstorms. Mostly cloudy, with a low around 22. South southwest wind 10 to 15 km/h, with gusts as high as 25 km/h. Chance of precipitation is 50%.

    Saturday: Showers and thunderstorms likely, mainly between 1pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. Partly sunny, with a high near 31. South southwest wind 10 to 20 km/h, with gusts as high as 35 km/h. Chance of precipitation is 70%.

    Saturday Night: A 30 percent chance of showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 19.

    Sunday: Mostly sunny, with a high near 29.

    Sunday Night: Mostly clear, with a low around 18.

    Monday: Sunny, with a high near 32.

    Monday Night: Mostly clear, with a low around 21.

    Tuesday: Mostly sunny, with a high near 33.

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

    Wednesday: Showers and thunderstorms likely. Partly sunny, with a high near 31.



    Saint Charles IL
     41.9°N 88.32°W

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