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.

Thunderstorm Light Rain

73°F

23°C

Humidity 90%
Wind Speed SE 10 mph
Barometer 30.00 in (1014.7 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 4 Sep 11:51 am CDT
Extended Forecast for

Lake Bluff IL

  • This Afternoon

    This Afternoon: Mostly cloudy, then gradually becoming sunny, with a high near 89. Heat index values as high as 97. East wind 5 to 15 mph becoming south. Winds could gust as high as 20 mph.

    High: 89 °F

    Decreasing
    Clouds

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly between 1am and 4am. Mostly cloudy, then gradually becoming mostly clear, with a low around 72. East wind around 5 mph becoming west after midnight.

    Low: 72 °F

    Chance
    T-storms

  • Saturday

    Saturday: Partly sunny, with a high near 79. North northeast wind 5 to 10 mph.

    High: 79 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 66. North northeast wind around 10 mph, with gusts as high as 15 mph.

    Low: 66 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 77. East wind 5 to 10 mph.

    High: 77 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 65.

    Low: 65 °F

    Partly Cloudy

  • Labor Day

    Labor Day: Mostly sunny, with a high near 78.

    High: 78 °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 81.

    High: 81 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Mostly cloudy, then gradually becoming sunny, with a high near 89. Heat index values as high as 97. East wind 5 to 15 mph becoming south. Winds could gust as high as 20 mph.
Tonight
A 30 percent chance of showers and thunderstorms, mainly between 1am and 4am. Mostly cloudy, then gradually becoming mostly clear, with a low around 72. East wind around 5 mph becoming west after midnight.
Saturday
Partly sunny, with a high near 79. North northeast wind 5 to 10 mph.
Saturday Night
Partly cloudy, with a low around 66. North northeast wind around 10 mph, with gusts as high as 15 mph.
Sunday
Mostly sunny, with a high near 77. East wind 5 to 10 mph.
Sunday Night
Partly cloudy, with a low around 65.
Labor Day
Mostly sunny, with a high near 78.
Monday Night
Mostly cloudy, with a low around 67.
Tuesday
Partly sunny, with a high near 81.
Tuesday Night
A chance of showers after 1am. Mostly cloudy, with a low around 71.
Wednesday
Partly sunny, with a high near 84.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 68.
Thursday
Partly sunny, with a high near 80.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lake Bluff IL
 42.28°N 87.85°W
Last Update:
11:51 am CDT Sep 4, 2026
Forecast Valid:
12pm CDT Sep 4, 2026-6pm CDT Sep 10, 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