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

Hazardous Weather Conditions

Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Fair

27°F

-3°C

Humidity 72%
Wind Speed NW 3 mph
Barometer 30.33 in (1028.5 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Last update 30 Nov 4:51 pm CST
Extended Forecast for

Long Lake IL

  • Tonight

    Tonight: Partly cloudy, with a low around 5. West northwest wind around 5 mph becoming calm after midnight. Winds could gust as high as 10 mph.

    Low: 5 °F

    Partly Cloudy

  • Monday

    Monday: Snow, mainly after 3pm. High near 27. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 100%. New snow accumulation of less than one inch possible.

    High: 27 °F

    Mostly Cloudy
    then Snow

  • Monday Night

    Monday Night: Snow, mainly before midnight. Low around 15. South southeast wind around 5 mph becoming west northwest after midnight. Chance of precipitation is 100%. New snow accumulation of around an inch possible.

    Low: 15 °F

    Snow then
    Chance Snow

  • Tuesday

    Tuesday: Partly sunny, with a high near 23. West northwest wind 5 to 10 mph becoming southwest in the afternoon.

    High: 23 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 15. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 15 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A 50 percent chance of snow, mainly after noon. Cloudy, with a high near 32.

    High: 32 °F

    Slight Chance
    Snow then
    Chance Snow

  • Wednesday Night

    Wednesday Night: A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 1.

    Low: 1 °F

    Chance Snow
    then Partly
    Cloudy

  • Thursday

    Thursday: Sunny, with a high near 12.

    High: 12 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around -4.

    Low: -4 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 5. West northwest wind around 5 mph becoming calm after midnight. Winds could gust as high as 10 mph.
Monday
Snow, mainly after 3pm. High near 27. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 100%. New snow accumulation of less than one inch possible.
Monday Night
Snow, mainly before midnight. Low around 15. South southeast wind around 5 mph becoming west northwest after midnight. Chance of precipitation is 100%. New snow accumulation of around an inch possible.
Tuesday
Partly sunny, with a high near 23. West northwest wind 5 to 10 mph becoming southwest in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 15. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Wednesday
A 50 percent chance of snow, mainly after noon. Cloudy, with a high near 32.
Wednesday Night
A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 1.
Thursday
Sunny, with a high near 12.
Thursday Night
Partly cloudy, with a low around -4.
Friday
A chance of snow after noon. Mostly cloudy, with a high near 22.
Friday Night
A chance of snow. Mostly cloudy, with a low around 13.
Saturday
Mostly cloudy, with a high near 27.
Saturday Night
A chance of snow. Mostly cloudy, with a low around 18.
Sunday
A chance of snow. Mostly cloudy, with a high near 26.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Long Lake IL
 42.38°N 88.14°W
Last Update:
3:11 pm CST Nov 30, 2025
Forecast Valid:
5pm CST Nov 30, 2025-6pm CST Dec 7, 2025
 
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