7-Day Forecast 41.84°N 87.88°W (Text-Only)
NWS Forecast for: Westchester IL
Issued by: National Weather Service Chicago, IL
Last Update: 9:07 am CDT Jul 15, 2025
Print


  • Today

    Today: Sunny, with a high near 90. South wind 5 to 10 mph.

    High: 90 °F

    Sunny



  • Tonight

    Tonight: Partly cloudy, with a low around 75. South wind around 5 mph.

    Low: 75 °F

    Partly Cloudy



  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms after 1pm.  Mostly sunny, with a high near 91. Heat index values as high as 98. Southwest wind 5 to 10 mph.

    High: 91 °F

    Mostly Sunny
    then Chance
    T-storms

  • Wednesday
    Night

    Wednesday Night: Showers and thunderstorms likely, mainly before 1am.  Mostly cloudy, with a low around 69. Southwest wind around 5 mph, with gusts as high as 10 mph.  Chance of precipitation is 60%.

    Low: 69 °F

    T-storms
    Likely


  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms.  Mostly cloudy, with a high near 77. West wind 5 to 15 mph becoming north northeast in the afternoon. Winds could gust as high as 20 mph.

    High: 77 °F

    Chance
    T-storms


  • Thursday
    Night

    Thursday Night: Mostly cloudy, with a low around 63.

    Low: 63 °F

    Mostly Cloudy



  • Friday

    Friday: Mostly sunny, with a high near 79.

    High: 79 °F

    Mostly Sunny



  • Friday
    Night

    Friday Night: Partly cloudy, with a low around 66.

    Low: 66 °F

    Partly Cloudy



  • Saturday

    Saturday: A chance of showers, with thunderstorms also possible after 1pm.  Partly sunny, with a high near 85.

    High: 85 °F

    Chance
    Showers then
    Chance
    T-storms



  • Today: Sunny, with a high near 90. South wind 5 to 10 mph.

    Tonight: Partly cloudy, with a low around 75. South wind around 5 mph.

    Wednesday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 91. Heat index values as high as 98. Southwest wind 5 to 10 mph.

    Wednesday Night: Showers and thunderstorms likely, mainly before 1am. Mostly cloudy, with a low around 69. Southwest wind around 5 mph, with gusts as high as 10 mph. Chance of precipitation is 60%.

    Thursday: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 77. West wind 5 to 15 mph becoming north northeast in the afternoon. Winds could gust as high as 20 mph.

    Thursday Night: Mostly cloudy, with a low around 63.

    Friday: Mostly sunny, with a high near 79.

    Friday Night: Partly cloudy, with a low around 66.

    Saturday: A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 85.

    Saturday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 70.

    Sunday: A chance of showers and thunderstorms. Mostly sunny, with a high near 84.

    Sunday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 68.

    Monday: A chance of showers and thunderstorms. Partly sunny, with a high near 85.



    Westchester IL
     41.84°N 87.88°W

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