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

80°F

27°C

Humidity 67%
Wind Speed Vrbl 6 mph
Barometer 30.07 in (1017.7 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 7 Aug 10:52 am CDT
Extended Forecast for

Lake Forest IL

  • Today

    Today: Mostly sunny, with a high near 82. South wind 5 to 10 mph.

    High: 82 °F

    Mostly Sunny

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before 3am, then a slight chance of showers between 3am and 4am. Partly cloudy, with a low around 70. Southwest wind around 5 mph, with gusts as high as 15 mph. Chance of precipitation is 20%.

    Low: 70 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Saturday

    Saturday: Sunny, with a high near 81. Northwest wind 5 to 10 mph.

    High: 81 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 65. West northwest wind around 5 mph becoming calm in the evening.

    Low: 65 °F

    Partly Cloudy

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after 10am. Partly sunny, with a high near 84. South wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.

    High: 84 °F

    Chance
    Showers then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 70.

    Low: 70 °F

    Chance
    T-storms

  • Monday

    Monday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 84. Chance of precipitation is 60%.

    High: 84 °F

    Showers
    Likely

  • Monday Night

    Monday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 67.

    Low: 67 °F

    Showers
    Likely

  • Tuesday

    Tuesday: A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 78.

    High: 78 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Today
Mostly sunny, with a high near 82. South wind 5 to 10 mph.
Tonight
A slight chance of showers and thunderstorms before 3am, then a slight chance of showers between 3am and 4am. Partly cloudy, with a low around 70. Southwest wind around 5 mph, with gusts as high as 15 mph. Chance of precipitation is 20%.
Saturday
Sunny, with a high near 81. Northwest wind 5 to 10 mph.
Saturday Night
Partly cloudy, with a low around 65. West northwest wind around 5 mph becoming calm in the evening.
Sunday
A chance of showers, with thunderstorms also possible after 10am. Partly sunny, with a high near 84. South wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.
Sunday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 70.
Monday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 84. Chance of precipitation is 60%.
Monday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 67.
Tuesday
A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 78.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 64.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 78.
Wednesday Night
Partly cloudy, with a low around 63.
Thursday
Partly sunny, with a high near 76.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lake Forest IL
 42.24°N 87.86°W
Last Update:
9:51 am CDT Aug 7, 2026
Forecast Valid:
11am CDT Aug 7, 2026-6pm CDT Aug 13, 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