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

81°F

27°C

Humidity 62%
Wind Speed SW 7 mph
Barometer 30.09 in (1018.3 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 15 Jul 8:52 am CDT
Extended Forecast for

Lake Forest IL

  • Today

    Today: Sunny, with a high near 85. East southeast wind 5 to 10 mph.

    High: 85 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 73. Southeast wind around 5 mph becoming calm in the evening.

    Low: 73 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 89. Heat index values as high as 98. Light south southwest wind becoming south 5 to 10 mph in the morning.

    High: 89 °F

    Mostly Sunny
    then Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms likely, mainly before 1am. Mostly cloudy, with a low around 66. West wind around 5 mph, with gusts as high as 10 mph. Chance of precipitation is 60%.

    Low: 66 °F

    T-storms
    Likely

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 73. North wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 73 °F

    Chance
    T-storms

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 61.

    Low: 61 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 75.

    High: 75 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 65.

    Low: 65 °F

    Partly Cloudy

  • Saturday

    Saturday: A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 82.

    High: 82 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Today
Sunny, with a high near 85. East southeast wind 5 to 10 mph.
Tonight
Partly cloudy, with a low around 73. Southeast wind around 5 mph becoming calm in the evening.
Wednesday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 89. Heat index values as high as 98. Light south southwest wind becoming south 5 to 10 mph in the morning.
Wednesday Night
Showers and thunderstorms likely, mainly before 1am. Mostly cloudy, with a low around 66. West wind around 5 mph, with gusts as high as 10 mph. Chance of precipitation is 60%.
Thursday
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 73. North wind 10 to 15 mph, with gusts as high as 20 mph.
Thursday Night
Mostly cloudy, with a low around 61.
Friday
Mostly sunny, with a high near 75.
Friday Night
Partly cloudy, with a low around 65.
Saturday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 82.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 68.
Sunday
A chance of showers. Partly sunny, with a high near 80.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 67.
Monday
A chance of showers. Partly sunny, with a high near 81.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lake Forest IL
 42.24°N 87.88°W
Last Update:
9:07 am CDT Jul 15, 2025
Forecast Valid:
9am CDT Jul 15, 2025-6pm CDT Jul 21, 2025
 
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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