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.

Fair

83°F

28°C

Humidity 65%
Wind Speed SW 10 G 18 mph
Barometer 30.03 in (1016.3 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 23 Jun 3:52 am CDT
Extended Forecast for

Lake Forest IL

Heat Advisory June 23, 04:32am until June 24, 12:00am
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory June 23, 04:32am until June 24, 12:00am

    NOW until 12:00am Tue

    Heat Advisory

  • Today

    High: 95 °F

    Sunny then
    Sunny and
    Breezy

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly between 1am and 2am. Partly cloudy, with a low around 73. Breezy, with a southwest wind 15 to 20 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 25 mph.

    Low: 73 °F

    Chance
    T-storms and
    Breezy

  • Tuesday

    Tuesday: Showers and thunderstorms likely, mainly after 4pm. Partly sunny, with a high near 82. West southwest wind 5 to 10 mph becoming east northeast in the afternoon. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 82 °F

    Slight Chance
    T-storms then
    T-storms
    Likely

  • Tuesday Night

    Tuesday Night: Showers and thunderstorms likely before 1am, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 65. Northeast wind around 5 mph, with gusts as high as 10 mph. Chance of precipitation is 60%.

    Low: 65 °F

    T-storms
    Likely

  • Wednesday

    Wednesday: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 76. North northeast wind 5 to 10 mph.

    High: 76 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 66.

    Low: 66 °F

    Chance
    T-storms

  • Thursday

    Thursday: A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 83.

    High: 83 °F

    Chance
    T-storms

  • Thursday Night

    Thursday Night: Showers and thunderstorms likely, mainly before 1am. Mostly cloudy, with a low around 70.

    Low: 70 °F

    T-storms
    Likely

Detailed Forecast

Today
Sunny and hot, with a high near 95. Heat index values as high as 98. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph.
Tonight
A 30 percent chance of showers and thunderstorms, mainly between 1am and 2am. Partly cloudy, with a low around 73. Breezy, with a southwest wind 15 to 20 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 25 mph.
Tuesday
Showers and thunderstorms likely, mainly after 4pm. Partly sunny, with a high near 82. West southwest wind 5 to 10 mph becoming east northeast in the afternoon. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
Showers and thunderstorms likely before 1am, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 65. Northeast wind around 5 mph, with gusts as high as 10 mph. Chance of precipitation is 60%.
Wednesday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 76. North northeast wind 5 to 10 mph.
Wednesday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 66.
Thursday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 83.
Thursday Night
Showers and thunderstorms likely, mainly before 1am. Mostly cloudy, with a low around 70.
Friday
A chance of showers and thunderstorms. Partly sunny, with a high near 81.
Friday Night
Partly cloudy, with a low around 67.
Saturday
Mostly sunny, with a high near 81.
Saturday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 67.
Sunday
A chance of showers and thunderstorms. Partly sunny, with a high near 83.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lake Forest IL
 42.26°N 87.85°W
Last Update:
4:26 am CDT Jun 23, 2025
Forecast Valid:
4am CDT Jun 23, 2025-6pm CDT Jun 29, 2025
 
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