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

Hazardous Weather Conditions

Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Fair

76°F

24°C

Humidity 88%
Wind Speed S 15 mph
Barometer 29.93 in (1012.3 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index76°F (24°C)
Last update 4 Sep 12:51 pm CDT
Extended Forecast for

Lake Bluff IL

  • This Afternoon

    This Afternoon: A 40 percent chance of showers and thunderstorms before 4pm. Mostly sunny, with a high near 88. Heat index values as high as 95. South wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 88 °F

    Chance
    Showers

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 3am. Patchy fog after 4am. Otherwise, partly cloudy, with a low around 72. South southeast wind around 5 mph becoming north northwest in the evening.

    Low: 72 °F

    Chance
    T-storms and
    Patchy Fog

  • Saturday

    Saturday: Patchy fog before 9am. Otherwise, partly sunny, with a high near 79. North wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 79 °F

    Patchy Fog
    then Partly
    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 68. North northeast wind 10 to 15 mph.

    Low: 68 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 76. East wind around 10 mph.

    High: 76 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 66.

    Low: 66 °F

    Mostly Clear

  • Labor Day

    Labor Day: Mostly sunny, with a high near 77.

    High: 77 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 67.

    Low: 67 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 82.

    High: 82 °F

    Partly Sunny

Detailed Forecast

This Afternoon
A 40 percent chance of showers and thunderstorms before 4pm. Mostly sunny, with a high near 88. Heat index values as high as 95. South wind 5 to 10 mph, with gusts as high as 20 mph.
Tonight
A 30 percent chance of showers and thunderstorms, mainly before 3am. Patchy fog after 4am. Otherwise, partly cloudy, with a low around 72. South southeast wind around 5 mph becoming north northwest in the evening.
Saturday
Patchy fog before 9am. Otherwise, partly sunny, with a high near 79. North wind 5 to 10 mph, with gusts as high as 15 mph.
Saturday Night
Partly cloudy, with a low around 68. North northeast wind 10 to 15 mph.
Sunday
Mostly sunny, with a high near 76. East wind around 10 mph.
Sunday Night
Mostly clear, with a low around 66.
Labor Day
Mostly sunny, with a high near 77.
Monday Night
Mostly cloudy, with a low around 67.
Tuesday
Partly sunny, with a high near 82.
Tuesday Night
A chance of showers after 1am. Mostly cloudy, with a low around 72.
Wednesday
Partly sunny, with a high near 84.
Wednesday Night
Partly cloudy, with a low around 67.
Thursday
Mostly sunny, with a high near 76.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lake Bluff IL
 42.28°N 87.82°W
Last Update:
1:21 pm CDT Sep 4, 2026
Forecast Valid:
1pm CDT Sep 4, 2026-6pm CDT Sep 10, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation