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

Chicago / Wheeling, Pal-Waukee Airport (KPWK)

Lat: 42.12°NLon: 87.9°WElev: 646ft.

Fair

76°F

24°C

Humidity 52%
Wind Speed NE 9 mph
Barometer 30.06 in (1017.7 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 20 Aug 4:52 pm CDT
Extended Forecast for

Lake Forest IL

  • Tonight

    Tonight: Partly cloudy, with a low around 60. East northeast wind around 5 mph becoming calm.

    Low: 60 °F

    Partly Cloudy

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 79. Southwest wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 79 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: A 50 percent chance of showers and thunderstorms, mainly before 11pm. Cloudy, then becoming partly cloudy toward daybreak, with a low around 64. West wind around 5 mph, with gusts as high as 10 mph.

    Low: 64 °F

    Chance
    T-storms then
    Slight Chance
    T-storms

  • Saturday

    Saturday: Mostly sunny, with a high near 78. Northwest wind around 10 mph, with gusts as high as 20 mph.

    High: 78 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 60. North wind around 5 mph.

    Low: 60 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 73.

    High: 73 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 58.

    Low: 58 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 74.

    High: 74 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 60.

    Low: 60 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 60. East northeast wind around 5 mph becoming calm.
Friday
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 79. Southwest wind 5 to 10 mph, with gusts as high as 15 mph.
Friday Night
A 50 percent chance of showers and thunderstorms, mainly before 11pm. Cloudy, then becoming partly cloudy toward daybreak, with a low around 64. West wind around 5 mph, with gusts as high as 10 mph.
Saturday
Mostly sunny, with a high near 78. Northwest wind around 10 mph, with gusts as high as 20 mph.
Saturday Night
Mostly clear, with a low around 60. North wind around 5 mph.
Sunday
Sunny, with a high near 73.
Sunday Night
Partly cloudy, with a low around 58.
Monday
Mostly sunny, with a high near 74.
Monday Night
Partly cloudy, with a low around 60.
Tuesday
Mostly sunny, with a high near 78.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 64.
Wednesday
Mostly sunny, with a high near 80.
Wednesday Night
Partly cloudy, with a low around 64.
Thursday
Mostly sunny, with a high near 78.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lake Forest IL
 42.24°N 87.86°W
Last Update:
2:36 pm CDT Aug 20, 2026
Forecast Valid:
7pm CDT Aug 20, 2026-6pm CDT Aug 27, 2026
 
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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