National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
7-Day Forecast 40.89°N 88.62°W (Text-Only)
NWS Forecast for: Pontiac IL
Issued by: National Weather Service Chicago, IL
Last Update: 9:16 pm CDT Jun 9, 2026		Print

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly between 1am and 4am. Partly cloudy, with a low around 72. South southwest wind around 5 mph.

    Low: 72 °F

    Mostly Clear
    then Chance
    T-storms

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms, mainly between 2pm and 5pm. Some of the storms could be severe and produce heavy rainfall. Mostly sunny, with a high near 93. Heat index values as high as 102. Southwest wind 10 to 15 mph, with gusts as high as 30 mph.

    High: 93 °F

    Mostly Sunny
    then Severe
    Thunderstorms

  • Wednesday
    Night

    Wednesday Night: Showers and thunderstorms likely, mainly before 2am. Some of the storms could be severe and produce heavy rainfall. Mostly cloudy, with a low around 72. South southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 72 °F

    Severe
    Thunderstorms
    then Chance
    T-storms

  • Thursday

    Thursday: Showers and thunderstorms likely after 1pm. Partly sunny, with a high near 92. Heat index values as high as 101. Breezy, with a southwest wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 70%.

    High: 92 °F

    Mostly Sunny
    then T-storms
    Likely and
    Breezy

  • Thursday
    Night

    Thursday Night: Showers and possibly a thunderstorm before 1am, then a slight chance of showers and thunderstorms between 1am and 4am, then a slight chance of showers after 4am. Low around 62. Breezy, with a south southwest wind 15 to 20 mph becoming west 5 to 10 mph after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 90%.

    Low: 62 °F

    T-storms and
    Breezy then
    Showers

  • Friday

    Friday: Sunny, with a high near 78.

    High: 78 °F

    Sunny



  • Friday
    Night

    Friday Night: Clear, with a low around 60.

    Low: 60 °F

    Clear



  • Saturday

    Saturday: Sunny, with a high near 85.

    High: 85 °F

    Sunny



  • Saturday
    Night

    Saturday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 63.

    Low: 63 °F

    Chance
    T-storms




    • Tonight: A 30 percent chance of showers and thunderstorms, mainly between 1am and 4am. Partly cloudy, with a low around 72. South southwest wind around 5 mph.

    Wednesday: A 40 percent chance of showers and thunderstorms, mainly between 2pm and 5pm. Some of the storms could be severe and produce heavy rainfall. Mostly sunny, with a high near 93. Heat index values as high as 102. Southwest wind 10 to 15 mph, with gusts as high as 30 mph.

    Wednesday Night: Showers and thunderstorms likely, mainly before 2am. Some of the storms could be severe and produce heavy rainfall. Mostly cloudy, with a low around 72. South southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Thursday: Showers and thunderstorms likely after 1pm. Partly sunny, with a high near 92. Heat index values as high as 101. Breezy, with a southwest wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 70%.

    Thursday Night: Showers and possibly a thunderstorm before 1am, then a slight chance of showers and thunderstorms between 1am and 4am, then a slight chance of showers after 4am. Low around 62. Breezy, with a south southwest wind 15 to 20 mph becoming west 5 to 10 mph after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 90%.

    Friday: Sunny, with a high near 78.

    Friday Night: Clear, with a low around 60.

    Saturday: Sunny, with a high near 85.

    Saturday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 63.

    Sunday: A chance of showers. Partly sunny, with a high near 81.

    Sunday Night: Mostly cloudy, with a low around 57.

    Monday: Partly sunny, with a high near 76.

    Monday Night: Partly cloudy, with a low around 54.

    Tuesday: Mostly sunny, with a high near 77.


    Pontiac IL
     40.89°N 88.62°W

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