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

75°F

24°C

Humidity 54%
Wind Speed NW 6 mph
Barometer 29.97 in (1014.6 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 22 Aug 7:52 pm CDT
Extended Forecast for

Lake Forest IL

  • Tonight

    Tonight: Isolated showers before 1am. Mostly clear, with a low around 59. North northeast wind 5 to 10 mph becoming northwest after midnight. Chance of precipitation is 20%.

    Low: 59 °F

    Isolated
    Showers

  • Sunday

    Sunday: Sunny, with a high near 74. Northwest wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 74 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 57. North northwest wind around 5 mph becoming calm in the evening.

    Low: 57 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 75. Northwest wind around 5 mph becoming north northeast in the afternoon.

    High: 75 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 60. East wind around 5 mph becoming calm in the evening.

    Low: 60 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 79.

    High: 79 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 64. Chance of precipitation is 20%.

    Low: 64 °F

    Slight Chance
    T-storms

  • Wednesday

    Wednesday: A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 83.

    High: 83 °F

    Mostly Sunny
    then Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers before 1am. Partly cloudy, with a low around 64.

    Low: 64 °F

    Chance
    Showers

Detailed Forecast

Tonight
Isolated showers before 1am. Mostly clear, with a low around 59. North northeast wind 5 to 10 mph becoming northwest after midnight. Chance of precipitation is 20%.
Sunday
Sunny, with a high near 74. Northwest wind 5 to 10 mph, with gusts as high as 15 mph.
Sunday Night
Mostly clear, with a low around 57. North northwest wind around 5 mph becoming calm in the evening.
Monday
Mostly sunny, with a high near 75. Northwest wind around 5 mph becoming north northeast in the afternoon.
Monday Night
Mostly clear, with a low around 60. East wind around 5 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 79.
Tuesday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 64. Chance of precipitation is 20%.
Wednesday
A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 83.
Wednesday Night
A chance of showers before 1am. Partly cloudy, with a low around 64.
Thursday
Mostly sunny, with a high near 79.
Thursday Night
Mostly clear, with a low around 63.
Friday
Sunny, with a high near 77.
Friday Night
Partly cloudy, with a low around 64.
Saturday
Mostly sunny, with a high near 79.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lake Forest IL
 42.26°N 87.85°W
Last Update:
8:01 pm CDT Aug 22, 2026
Forecast Valid:
8pm CDT Aug 22, 2026-6pm CDT Aug 29, 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