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

36°F

2°C

Humidity 59%
Wind Speed SE 10 mph
Barometer 30.20 in (1023.3 mb)
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Wind Chill29°F (-2°C)
Last update 14 Mar 12:52 pm CDT
Extended Forecast for

Lake Forest IL

  • This Afternoon

    This Afternoon: A slight chance of snow showers between 2pm and 3pm. Mostly cloudy, with a high near 40. East southeast wind around 10 mph, with gusts as high as 15 mph. Chance of precipitation is 20%.

    High: 40 °F

    Slight Chance
    Snow Showers

  • Tonight

    Tonight: A slight chance of snow showers before 11pm, then a slight chance of rain and snow showers between 11pm and midnight, then a slight chance of rain showers after midnight. Cloudy, with a low around 36. East southeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

    Low: 36 °F

    Slight Chance
    Rain/Snow
    then Slight
    Chance
    Showers

  • Sunday

    Sunday: A slight chance of showers, then showers and possibly a thunderstorm after 10am. High near 60. Breezy, with a south wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 60 °F

    Breezy.
    Showers
    Likely then
    Showers

  • Sunday Night

    Sunday Night: Rain showers and snow, possibly mixed with sleet before midnight, then snow, possibly mixed with sleet between midnight and 1am, then snow after 1am. Patchy blowing snow after 1am. Low around 22. Windy, with a west southwest wind 20 to 30 mph becoming north in the evening. Winds could gust as high as 45 mph. Chance of precipitation is 100%. New snow and sleet accumulation of 1 to 2 inches possible.

    Low: 22 °F

    Wintry Mix
    and Patchy
    Blowing Snow

  • Monday

    Monday: Snow, mainly before 1pm. Patchy blowing snow. High near 25. Windy, with a northwest wind 25 to 30 mph, with gusts as high as 45 mph. Chance of precipitation is 80%.

    High: 25 °F

    Snow and
    Patchy
    Blowing Snow

  • Monday Night

    Monday Night: A 10 percent chance of snow before 7pm. Mostly cloudy, with a low around 10. Blustery.

    Low: 10 °F

    Slight Chance
    Snow and
    Blustery then
    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 24.

    High: 24 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A chance of snow after 1am. Mostly cloudy, with a low around 18.

    Low: 18 °F

    Mostly Cloudy
    then Chance
    Snow

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 42.

    High: 42 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
A slight chance of snow showers between 2pm and 3pm. Mostly cloudy, with a high near 40. East southeast wind around 10 mph, with gusts as high as 15 mph. Chance of precipitation is 20%.
Tonight
A slight chance of snow showers before 11pm, then a slight chance of rain and snow showers between 11pm and midnight, then a slight chance of rain showers after midnight. Cloudy, with a low around 36. East southeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Sunday
A slight chance of showers, then showers and possibly a thunderstorm after 10am. High near 60. Breezy, with a south wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Sunday Night
Rain showers and snow, possibly mixed with sleet before midnight, then snow, possibly mixed with sleet between midnight and 1am, then snow after 1am. Patchy blowing snow after 1am. Low around 22. Windy, with a west southwest wind 20 to 30 mph becoming north in the evening. Winds could gust as high as 45 mph. Chance of precipitation is 100%. New snow and sleet accumulation of 1 to 2 inches possible.
Monday
Snow, mainly before 1pm. Patchy blowing snow. High near 25. Windy, with a northwest wind 25 to 30 mph, with gusts as high as 45 mph. Chance of precipitation is 80%.
Monday Night
A 10 percent chance of snow before 7pm. Mostly cloudy, with a low around 10. Blustery.
Tuesday
Mostly sunny, with a high near 24.
Tuesday Night
A chance of snow after 1am. Mostly cloudy, with a low around 18.
Wednesday
Mostly cloudy, with a high near 42.
Wednesday Night
Partly cloudy, with a low around 33.
Thursday
Mostly sunny, with a high near 51.
Thursday Night
Mostly cloudy, with a low around 37.
Friday
Partly sunny, with a high near 50.
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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:
12:51 pm CDT Mar 14, 2026
Forecast Valid:
1pm CDT Mar 14, 2026-6pm CDT Mar 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