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

Dangerous Heat and Possible Flooding

Dangerous heat will persist across the Southwest U.S. through Saturday with daytime highs of 110-115°F. Extreme Heat Warnings remain in effect. Dangerous heat will build across the southern Plains again beginning this weekend. Heavy to excessive rain over the Carolinas Friday may lead to isolated areas of flash flooding. Read More >

Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

A Few Clouds

72°F

22°C

Humidity 76%
Wind Speed Calm
Barometer 30.16 in (1020.4 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 28 Aug 8:51 am CDT
Extended Forecast for

Lake Bluff IL

  • Today

    Today: Sunny, with a high near 80. South wind 5 to 10 mph becoming east southeast in the afternoon.

    High: 80 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 64. Southeast wind around 5 mph becoming south southwest in the evening. Winds could gust as high as 10 mph.

    Low: 64 °F

    Partly Cloudy

  • Saturday

    Saturday: A 10 percent chance of showers after 5pm. Increasing clouds, with a high near 80. Southwest wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 80 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Saturday Night

    Saturday Night: A 30 percent chance of showers, mainly between 7pm and 1am. Mostly cloudy, with a low around 69. South wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 69 °F

    Chance
    Showers

  • Sunday

    Sunday: A 20 percent chance of showers before 1pm. Partly sunny, with a high near 86. South southwest wind around 15 mph, with gusts as high as 25 mph.

    High: 86 °F

    Slight Chance
    Showers

  • Sunday Night

    Sunday Night: A 30 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 72.

    Low: 72 °F

    Chance
    T-storms

  • Monday

    Monday: Mostly sunny, with a high near 86.

    High: 86 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 73.

    Low: 73 °F

    Partly Cloudy
    then Chance
    T-storms

  • Tuesday

    Tuesday: Mostly sunny, with a high near 86.

    High: 86 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 80. South wind 5 to 10 mph becoming east southeast in the afternoon.
Tonight
Partly cloudy, with a low around 64. Southeast wind around 5 mph becoming south southwest in the evening. Winds could gust as high as 10 mph.
Saturday
A 10 percent chance of showers after 5pm. Increasing clouds, with a high near 80. Southwest wind 5 to 10 mph, with gusts as high as 15 mph.
Saturday Night
A 30 percent chance of showers, mainly between 7pm and 1am. Mostly cloudy, with a low around 69. South wind 10 to 15 mph, with gusts as high as 20 mph.
Sunday
A 20 percent chance of showers before 1pm. Partly sunny, with a high near 86. South southwest wind around 15 mph, with gusts as high as 25 mph.
Sunday Night
A 30 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 72.
Monday
Mostly sunny, with a high near 86.
Monday Night
A chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 73.
Tuesday
Mostly sunny, with a high near 86.
Tuesday Night
A chance of showers. Partly cloudy, with a low around 71.
Wednesday
Mostly sunny, with a high near 84.
Wednesday Night
Partly cloudy, with a low around 71.
Thursday
Mostly sunny, with a high near 82.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lake Bluff IL
 42.28°N 87.85°W
Last Update:
1:21 am CDT Aug 28, 2026
Forecast Valid:
9am CDT Aug 28, 2026-6pm CDT Sep 3, 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