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

22°F

-6°C

Humidity 75%
Wind Speed W 16 G 25 mph
Barometer 30.10 in (1020.7 mb)
Dewpoint 15°F (-9°C)
Visibility 10.00 mi
Wind Chill8°F (-13°C)
Last update 11 Jan 4:51 am CST
Extended Forecast for

Long Lake IL

  • Overnight

    Overnight: Scattered flurries with a slight chance of snow showers. Mostly cloudy, with a low around 21. Blustery, with a west northwest wind around 20 mph, with gusts as high as 35 mph.

    Low: 21 °F

    Slight Chance
    Snow Showers
    and Blustery

  • Sunday

    Sunday: Scattered flurries with a slight chance of snow showers before 9am. Partly sunny, with a high near 32. Breezy, with a west northwest wind 15 to 20 mph decreasing to 10 to 15 mph in the afternoon. Winds could gust as high as 35 mph.

    High: 32 °F

    Slight Chance
    Snow Showers
    and Breezy
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 26. West southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 26 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 41. West southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 41 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 32. West southwest wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 32 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 30 percent chance of showers before noon. Partly sunny, with a high near 48.

    High: 48 °F

    Chance
    Showers then
    Partly Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of rain showers between midnight and 3am, then a chance of snow showers. Mostly cloudy, with a low around 28. Chance of precipitation is 30%.

    Low: 28 °F

    Mostly Cloudy
    then Chance
    Rain/Snow

  • Wednesday

    Wednesday: A chance of snow showers. Mostly cloudy, with a high near 31. Blustery.

    High: 31 °F

    Chance Snow
    Showers and
    Blustery

  • Wednesday Night

    Wednesday Night: A chance of snow showers before midnight. Mostly cloudy, with a low around 15.

    Low: 15 °F

    Chance Snow
    Showers then
    Mostly Cloudy

Detailed Forecast

Overnight
Scattered flurries with a slight chance of snow showers. Mostly cloudy, with a low around 21. Blustery, with a west northwest wind around 20 mph, with gusts as high as 35 mph.
Sunday
Scattered flurries with a slight chance of snow showers before 9am. Partly sunny, with a high near 32. Breezy, with a west northwest wind 15 to 20 mph decreasing to 10 to 15 mph in the afternoon. Winds could gust as high as 35 mph.
Sunday Night
Partly cloudy, with a low around 26. West southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Monday
Mostly sunny, with a high near 41. West southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Monday Night
Partly cloudy, with a low around 32. West southwest wind 5 to 10 mph, with gusts as high as 15 mph.
Tuesday
A 30 percent chance of showers before noon. Partly sunny, with a high near 48.
Tuesday Night
A slight chance of rain showers between midnight and 3am, then a chance of snow showers. Mostly cloudy, with a low around 28. Chance of precipitation is 30%.
Wednesday
A chance of snow showers. Mostly cloudy, with a high near 31. Blustery.
Wednesday Night
A chance of snow showers before midnight. Mostly cloudy, with a low around 15.
Thursday
Partly sunny, with a high near 27.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 20.
Friday
A chance of snow showers. Mostly cloudy, with a high near 32.
Friday Night
A chance of snow showers. Mostly cloudy, with a low around 17.
Saturday
Mostly cloudy, with a high near 24.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Long Lake IL
 42.38°N 88.14°W
Last Update:
4:26 am CST Jan 11, 2026
Forecast Valid:
5am CST Jan 11, 2026-6pm CST Jan 17, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation