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.

A Few Clouds

58°F

14°C

Humidity 78%
Wind Speed S 10 mph
Barometer 30.00 in (1016.1 mb)
Dewpoint 51°F (11°C)
Visibility 10.00 mi
Last update 12 Apr 6:52 am CDT
Extended Forecast for

Lake Forest IL

  • Today

    Today: Isolated showers, then a chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 77. Windy, with a south southwest wind 15 to 20 mph increasing to 25 to 30 mph in the afternoon. Winds could gust as high as 40 mph. Chance of precipitation is 40%.

    High: 77 °F

    Isolated
    Showers and
    Breezy then
    Chance
    T-storms and
    Windy

  • Tonight

    Tonight: Periods of showers and possibly a thunderstorm before midnight, then scattered showers. Low around 61. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 61 °F

    Showers and
    Breezy then
    Scattered
    Showers

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 77. Southwest wind around 15 mph, with gusts as high as 25 mph.

    High: 77 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: A 40 percent chance of showers and thunderstorms, mainly after 7pm. Mostly cloudy, with a low around 65. South wind around 15 mph, with gusts as high as 25 mph.

    Low: 65 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A slight chance of showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 4pm, then showers and thunderstorms likely after 4pm. Partly sunny, with a high near 80. Southwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.

    High: 80 °F

    Slight Chance
    T-storms then
    T-storms
    Likely

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm. Low around 61. Chance of precipitation is 80%.

    Low: 61 °F

    T-storms then
    Showers

  • Wednesday

    Wednesday: Showers and thunderstorms likely, mainly after 1pm. Mostly cloudy, with a high near 72. Chance of precipitation is 70%.

    High: 72 °F

    T-storms
    Likely

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms likely before 1am, then a chance of showers. Mostly cloudy, with a low around 54.

    Low: 54 °F

    T-storms
    Likely

  • Thursday

    Thursday: A chance of showers. Partly sunny, with a high near 73.

    High: 73 °F

    Chance
    Showers

Detailed Forecast

Today
Isolated showers, then a chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 77. Windy, with a south southwest wind 15 to 20 mph increasing to 25 to 30 mph in the afternoon. Winds could gust as high as 40 mph. Chance of precipitation is 40%.
Tonight
Periods of showers and possibly a thunderstorm before midnight, then scattered showers. Low around 61. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Monday
A 20 percent chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 77. Southwest wind around 15 mph, with gusts as high as 25 mph.
Monday Night
A 40 percent chance of showers and thunderstorms, mainly after 7pm. Mostly cloudy, with a low around 65. South wind around 15 mph, with gusts as high as 25 mph.
Tuesday
A slight chance of showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 4pm, then showers and thunderstorms likely after 4pm. Partly sunny, with a high near 80. Southwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.
Tuesday Night
Showers and possibly a thunderstorm. Low around 61. Chance of precipitation is 80%.
Wednesday
Showers and thunderstorms likely, mainly after 1pm. Mostly cloudy, with a high near 72. Chance of precipitation is 70%.
Wednesday Night
Showers and thunderstorms likely before 1am, then a chance of showers. Mostly cloudy, with a low around 54.
Thursday
A chance of showers. Partly sunny, with a high near 73.
Thursday Night
Partly cloudy, with a low around 51.
Friday
A chance of showers. Partly sunny, with a high near 76.
Friday Night
Showers and possibly a thunderstorm. Mostly cloudy, with a low around 52.
Saturday
A chance of showers. Mostly cloudy, with a high near 66.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lake Forest IL
 42.26°N 87.85°W
Last Update:
6:11 am CDT Apr 12, 2026
Forecast Valid:
7am CDT Apr 12, 2026-6pm CDT Apr 18, 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