National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Areas of Dangerous Heat and Heavy Rain with Possible Flooding into this Weekend

Hot temperatures and high humidity are forecast to continue across much of northeast Texas into the mid-Mississippi Valley into this weekend with heat advisories in effect. Heavy to excessive rainfall occurring at times through Saturday could bring areas of flooding across parts of the central Plains into the upper Midwest/Great Lakes, and Four Corners states. Read More >

Hazardous Weather Conditions

Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Overcast

64°F

18°C

Humidity 96%
Wind Speed Calm
Barometer 30.26 in (1024.1 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 16 Sep 11:51 pm CDT
Extended Forecast for

Pistakee Highlands IL

  • Overnight

    Overnight: A slight chance of showers before 1am, then a chance of showers and thunderstorms between 1am and 4am, then showers likely and possibly a thunderstorm after 4am. Cloudy, with a low around 62. Calm wind. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 62 °F

    Showers
    Likely

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm before 10am, then a slight chance of showers and thunderstorms between 10am and 1pm. Cloudy, with a high near 74. Calm wind becoming northeast around 5 mph in the morning. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 74 °F

    Showers
    Likely then
    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: Cloudy, then gradually becoming partly cloudy, with a low around 59. Northeast wind around 5 mph becoming calm in the evening.

    Low: 59 °F

    Decreasing
    Clouds

  • Friday

    Friday: Isolated showers and thunderstorms after 1pm. Partly sunny, with a high near 73. East wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 20%.

    High: 73 °F

    Partly Sunny
    then Isolated
    T-storms

  • Friday Night

    Friday Night: Showers and thunderstorms likely, mainly after 1am. Mostly cloudy, with a low around 62. East wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.

    Low: 62 °F

    Scattered
    T-storms then
    T-storms
    Likely

  • Saturday

    Saturday: Showers and thunderstorms. High near 79. Chance of precipitation is 80%.

    High: 79 °F

    T-storms

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 62. Chance of precipitation is 60%.

    Low: 62 °F

    Showers
    Likely

  • Sunday

    Sunday: A chance of showers. Cloudy, with a high near 69.

    High: 69 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers. Cloudy, with a low around 57.

    Low: 57 °F

    Chance
    Showers

Detailed Forecast

Overnight
A slight chance of showers before 1am, then a chance of showers and thunderstorms between 1am and 4am, then showers likely and possibly a thunderstorm after 4am. Cloudy, with a low around 62. Calm wind. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
Showers likely and possibly a thunderstorm before 10am, then a slight chance of showers and thunderstorms between 10am and 1pm. Cloudy, with a high near 74. Calm wind becoming northeast around 5 mph in the morning. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Cloudy, then gradually becoming partly cloudy, with a low around 59. Northeast wind around 5 mph becoming calm in the evening.
Friday
Isolated showers and thunderstorms after 1pm. Partly sunny, with a high near 73. East wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 20%.
Friday Night
Showers and thunderstorms likely, mainly after 1am. Mostly cloudy, with a low around 62. East wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Saturday
Showers and thunderstorms. High near 79. Chance of precipitation is 80%.
Saturday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 62. Chance of precipitation is 60%.
Sunday
A chance of showers. Cloudy, with a high near 69.
Sunday Night
A chance of showers. Cloudy, with a low around 57.
Monday
A chance of showers. Cloudy, with a high near 66.
Monday Night
A chance of showers. Mostly cloudy, with a low around 55.
Tuesday
A chance of showers. Mostly cloudy, with a high near 67.
Tuesday Night
Mostly cloudy, with a low around 55.
Wednesday
Partly sunny, with a high near 72.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Pistakee Highlands IL
 42.38°N 88.23°W
Last Update:
8:36 pm CDT Sep 16, 2026
Forecast Valid:
12am CDT Sep 17, 2026-6pm CDT Sep 23, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation