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.

Overcast

64°F

18°C

Humidity 96%
Wind Speed E 5 mph
Barometer 29.95 in (1013.8 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 14 Oct 2:52 am CDT
Extended Forecast for

Lake Forest IL

  • Overnight

    Overnight: Showers likely and possibly a thunderstorm before 4am. Cloudy, with a low around 61. North northeast wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 61 °F

    Showers
    Likely

  • Wednesday

    Wednesday: A slight chance of showers between 10am and 1pm. Mostly cloudy, with a high near 62. North northeast wind 10 to 15 mph. Chance of precipitation is 20%.

    High: 62 °F

    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 57. North northeast wind 10 to 15 mph.

    Low: 57 °F

    Mostly Cloudy

  • Thursday

    Thursday: Rain likely, then rain and possibly a thunderstorm after 1pm. High near 58. East southeast wind 10 to 15 mph. Chance of precipitation is 100%.

    High: 58 °F

    Rain Likely
    then Rain

  • Thursday Night

    Thursday Night: Rain and possibly a thunderstorm before 1am, then a slight chance of rain. Low around 50. Light and variable wind becoming northwest 10 to 15 mph in the evening. Winds could gust as high as 30 mph. Chance of precipitation is 80%.

    Low: 50 °F

    Rain

  • Friday

    Friday: A 30 percent chance of rain before 1pm. Partly sunny, with a high near 55. Breezy.

    High: 55 °F

    Chance Rain
    and Breezy

  • Friday Night

    Friday Night: Partly cloudy, with a low around 38.

    Low: 38 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 56.

    High: 56 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 41.

    Low: 41 °F

    Clear

Detailed Forecast

Overnight
Showers likely and possibly a thunderstorm before 4am. Cloudy, with a low around 61. North northeast wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
A slight chance of showers between 10am and 1pm. Mostly cloudy, with a high near 62. North northeast wind 10 to 15 mph. Chance of precipitation is 20%.
Wednesday Night
Mostly cloudy, with a low around 57. North northeast wind 10 to 15 mph.
Thursday
Rain likely, then rain and possibly a thunderstorm after 1pm. High near 58. East southeast wind 10 to 15 mph. Chance of precipitation is 100%.
Thursday Night
Rain and possibly a thunderstorm before 1am, then a slight chance of rain. Low around 50. Light and variable wind becoming northwest 10 to 15 mph in the evening. Winds could gust as high as 30 mph. Chance of precipitation is 80%.
Friday
A 30 percent chance of rain before 1pm. Partly sunny, with a high near 55. Breezy.
Friday Night
Partly cloudy, with a low around 38.
Saturday
Sunny, with a high near 56.
Saturday Night
Clear, with a low around 41.
Sunday
Sunny, with a high near 64.
Sunday Night
Partly cloudy, with a low around 47.
Monday
Partly sunny, with a high near 65.
Monday Night
Partly cloudy, with a low around 48.
Tuesday
Mostly sunny, with a high near 67.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lake Forest IL
 42.24°N 87.86°W
Last Update:
2:41 am CDT Oct 14, 2026
Forecast Valid:
3am CDT Oct 14, 2026-6pm CDT Oct 20, 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