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

Hazardous Weather Conditions

Current conditions at

Chicago / Wheeling, Pal-Waukee Airport (KPWK)

Lat: 42.12°NLon: 87.9°WElev: 646ft.

Partly Cloudy

83°F

28°C

Humidity 79%
Wind Speed SW 10 mph
Barometer 29.90 in (1011.8 mb)
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index91°F (33°C)
Last update 30 Jun 12:52 am CDT
Extended Forecast for

Lake Forest IL

Heat Advisory June 30, 01:01am until July 1, 10:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory June 30, 01:01am until July 1, 10:00pm

    NOW until 10:00pm Wed

    Heat Advisory

  • Overnight

    Low: 78 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 95. Heat index values as high as 106. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 95 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 79. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 79 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 97. Heat index values as high as 104. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 97 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 78. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 78 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 95.

    High: 95 °F

    Hot

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 74. Chance of precipitation is 60%.

    Low: 74 °F

    Chance
    T-storms then
    Showers
    Likely

  • Friday

    Friday: A chance of showers and thunderstorms. Partly sunny, with a high near 89.

    High: 89 °F

    Chance
    T-storms

Detailed Forecast

Overnight
Mostly clear, with a low around 78. South southwest wind around 10 mph, with gusts as high as 20 mph.
Tuesday
Sunny and hot, with a high near 95. Heat index values as high as 106. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Tuesday Night
Mostly clear, with a low around 79. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Wednesday
Sunny and hot, with a high near 97. Heat index values as high as 104. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Wednesday Night
Mostly clear, with a low around 78. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Thursday
Sunny and hot, with a high near 95.
Thursday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 74. Chance of precipitation is 60%.
Friday
A chance of showers and thunderstorms. Partly sunny, with a high near 89.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 72.
Independence Day
A chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 85.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 70.
Sunday
A chance of showers and thunderstorms. Partly sunny, with a high near 84.
Sunday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 68.
Monday
Mostly sunny, with a high near 82.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lake Forest IL
 42.26°N 87.85°W
Last Update:
9:56 pm CDT Jun 29, 2026
Forecast Valid:
1am CDT Jun 30, 2026-6pm CDT Jul 6, 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