National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Overcast

37°F

3°C

Humidity 48%
Wind Speed W 15 G 21 mph
Barometer 29.47 in (999.3 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill28°F (-2°C)
Last update 24 Feb 6:51 pm CST
Extended Forecast for

Long Lake IL

  • Tonight

    Tonight: Scattered rain and snow showers before 8pm. Cloudy during the early evening, then gradual clearing, with a low around 21. West northwest wind 10 to 15 mph. Chance of precipitation is 50%.

    Low: 21 °F

    Scattered
    Rain/Snow
    then Mostly
    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 31. West northwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 31 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 18. West northwest wind around 5 mph becoming calm after midnight.

    Low: 18 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 40. South southwest wind 5 to 10 mph.

    High: 40 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 26. Southwest wind 5 to 10 mph.

    Low: 26 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 57.

    High: 57 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 28.

    Low: 28 °F

    Partly Cloudy

  • Saturday

    Saturday: A chance of snow after noon. Mostly cloudy, with a high near 38.

    High: 38 °F

    Mostly Cloudy
    then Chance
    Snow

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 19.

    Low: 19 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Scattered rain and snow showers before 8pm. Cloudy during the early evening, then gradual clearing, with a low around 21. West northwest wind 10 to 15 mph. Chance of precipitation is 50%.
Wednesday
Sunny, with a high near 31. West northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Wednesday Night
Partly cloudy, with a low around 18. West northwest wind around 5 mph becoming calm after midnight.
Thursday
Mostly sunny, with a high near 40. South southwest wind 5 to 10 mph.
Thursday Night
Mostly clear, with a low around 26. Southwest wind 5 to 10 mph.
Friday
Mostly sunny, with a high near 57.
Friday Night
Partly cloudy, with a low around 28.
Saturday
A chance of snow after noon. Mostly cloudy, with a high near 38.
Saturday Night
Mostly cloudy, with a low around 19.
Sunday
Partly sunny, with a high near 31.
Sunday Night
A chance of snow. Mostly cloudy, with a low around 20.
Monday
Partly sunny, with a high near 33.
Monday Night
Mostly cloudy, with a low around 24.
Tuesday
A chance of rain and snow. Mostly cloudy, with a high near 39.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Long Lake IL
 42.38°N 88.14°W
Last Update:
6:01 pm CST Feb 24, 2026
Forecast Valid:
7pm CST Feb 24, 2026-6pm CST Mar 3, 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