7-Day Forecast 41.52°N 88.11°W (Text-Only)
NWS Forecast for: Joliet IL
Issued by: National Weather Service Chicago, IL
Last Update: 4:31 am CDT Jul 14, 2026
Print


  • Today

    Today: Patchy fog before 8am.  Otherwise, sunny, with a high near 94. Heat index values as high as 101. Calm wind becoming west southwest around 5 mph in the morning.

    High: 94 °F

    Patchy Fog
    then Sunny


  • Tonight

    Tonight: Mostly clear, with a low around 72. West southwest wind around 5 mph, with gusts as high as 10 mph.

    Low: 72 °F

    Mostly Clear



  • Wednesday

    Wednesday: Sunny and hot, with a high near 96. Heat index values as high as 104. West wind around 5 mph.

    High: 96 °F

    Hot



  • Wednesday
    Night

    Wednesday Night: Mostly clear, with a low around 73. West wind around 5 mph becoming calm  in the evening.

    Low: 73 °F

    Mostly Clear



  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms after 1pm.  Sunny, with a high near 94. Calm wind becoming west around 5 mph in the afternoon. Winds could gust as high as 10 mph.

    High: 94 °F

    Sunny then
    Slight Chance
    T-storms

  • Thursday
    Night

    Thursday Night: Mostly clear, with a low around 73.

    Low: 73 °F

    Mostly Clear



  • Friday

    Friday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm.  Mostly sunny, with a high near 91. Chance of precipitation is 60%.

    High: 91 °F

    Chance
    Showers then
    Showers
    Likely

  • Friday
    Night

    Friday Night: A chance of showers and thunderstorms before 1am.  Partly cloudy, with a low around 72.

    Low: 72 °F

    Chance
    T-storms


  • Saturday

    Saturday: A chance of showers and thunderstorms after 1pm.  Mostly sunny, with a high near 91.

    High: 91 °F

    Mostly Sunny
    then Chance
    T-storms



  • Today: Patchy fog before 8am. Otherwise, sunny, with a high near 94. Heat index values as high as 101. Calm wind becoming west southwest around 5 mph in the morning.

    Tonight: Mostly clear, with a low around 72. West southwest wind around 5 mph, with gusts as high as 10 mph.

    Wednesday: Sunny and hot, with a high near 96. Heat index values as high as 104. West wind around 5 mph.

    Wednesday Night: Mostly clear, with a low around 73. West wind around 5 mph becoming calm in the evening.

    Thursday: A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 94. Calm wind becoming west around 5 mph in the afternoon. Winds could gust as high as 10 mph.

    Thursday Night: Mostly clear, with a low around 73.

    Friday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 91. Chance of precipitation is 60%.

    Friday Night: A chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 72.

    Saturday: A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 91.

    Saturday Night: A chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 71.

    Sunday: Mostly sunny, with a high near 87.

    Sunday Night: Mostly clear, with a low around 67.

    Monday: Sunny, with a high near 86.



    Joliet IL
     41.52°N 88.11°W

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