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.

A Few Clouds

72°F

22°C

Humidity 37%
Wind Speed SW 9 mph
Barometer 29.62 in (1002.8 mb)
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Last update 21 Mar 10:52 pm CDT
Extended Forecast for

Lake Forest IL

  • Tonight

    Tonight: Partly cloudy, with a low around 41. Southwest wind around 10 mph becoming north after midnight. Winds could gust as high as 20 mph.

    Low: 41 °F

    Partly Cloudy

  • Sunday

    Sunday: A 20 percent chance of showers before 4pm. Patchy fog before 4pm. Otherwise, mostly cloudy, with a temperature falling to around 37 by 5pm. Breezy, with a north wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 41 °F⇓

    Slight Chance
    Showers and
    Patchy Fog

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 29. Blustery, with a north wind 10 to 20 mph, with gusts as high as 30 mph.

    Low: 29 °F

    Mostly Cloudy
    and Blustery
    then Mostly
    Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 42. North wind around 5 mph, with gusts as high as 15 mph.

    High: 42 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 32. East wind around 5 mph becoming south after midnight. Winds could gust as high as 10 mph.

    Low: 32 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 52.

    High: 52 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 39.

    Low: 39 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 50.

    High: 50 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 44.

    Low: 44 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 41. Southwest wind around 10 mph becoming north after midnight. Winds could gust as high as 20 mph.
Sunday
A 20 percent chance of showers before 4pm. Patchy fog before 4pm. Otherwise, mostly cloudy, with a temperature falling to around 37 by 5pm. Breezy, with a north wind 15 to 20 mph, with gusts as high as 30 mph.
Sunday Night
Mostly cloudy, with a low around 29. Blustery, with a north wind 10 to 20 mph, with gusts as high as 30 mph.
Monday
Mostly sunny, with a high near 42. North wind around 5 mph, with gusts as high as 15 mph.
Monday Night
Partly cloudy, with a low around 32. East wind around 5 mph becoming south after midnight. Winds could gust as high as 10 mph.
Tuesday
Mostly cloudy, with a high near 52.
Tuesday Night
Mostly cloudy, with a low around 39.
Wednesday
Mostly cloudy, with a high near 50.
Wednesday Night
Mostly cloudy, with a low around 44.
Thursday
Mostly cloudy, with a high near 58.
Thursday Night
Mostly cloudy, with a low around 32.
Friday
Partly sunny, with a high near 42.
Friday Night
Partly cloudy, with a low around 30.
Saturday
Mostly sunny, with a high near 46.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lake Forest IL
 42.24°N 87.86°W
Last Update:
8:56 pm CDT Mar 21, 2026
Forecast Valid:
11pm CDT Mar 21, 2026-6pm CDT Mar 28, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation