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.

Fair

40°F

4°C

Humidity 68%
Wind Speed SW 7 mph
Barometer 30.00 in (1016.4 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill35°F (2°C)
Last update 14 Nov 3:51 am CST
Extended Forecast for

Long Lake IL

  • Today

    Today: Sunny, with a high near 65. Southwest wind 5 to 10 mph.

    High: 65 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a temperature rising to around 57 by 3am. Southwest wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 53 °F⇑

    Increasing
    Clouds

  • Saturday

    Saturday: Cloudy, then gradually becoming mostly sunny, with a high near 65. Southwest wind around 15 mph becoming northwest in the afternoon. Winds could gust as high as 25 mph.

    High: 65 °F

    Decreasing
    Clouds

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 33. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 33 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 48. West northwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 48 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 26.

    Low: 26 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 45.

    High: 45 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A chance of rain before midnight, then a chance of snow. Mostly cloudy, with a low around 30.

    Low: 30 °F

    Chance Rain
    then Chance
    Snow

  • Tuesday

    Tuesday: Partly sunny, with a high near 44.

    High: 44 °F

    Partly Sunny

Detailed Forecast

Today
Sunny, with a high near 65. Southwest wind 5 to 10 mph.
Tonight
Increasing clouds, with a temperature rising to around 57 by 3am. Southwest wind 5 to 15 mph, with gusts as high as 20 mph.
Saturday
Cloudy, then gradually becoming mostly sunny, with a high near 65. Southwest wind around 15 mph becoming northwest in the afternoon. Winds could gust as high as 25 mph.
Saturday Night
Mostly clear, with a low around 33. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday
Sunny, with a high near 48. West northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday Night
Mostly clear, with a low around 26.
Monday
Mostly sunny, with a high near 45.
Monday Night
A chance of rain before midnight, then a chance of snow. Mostly cloudy, with a low around 30.
Tuesday
Partly sunny, with a high near 44.
Tuesday Night
Mostly cloudy, with a low around 30.
Wednesday
Partly sunny, with a high near 46.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 33.
Thursday
A chance of rain. Mostly cloudy, with a high near 47.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Long Lake IL
 42.38°N 88.14°W
Last Update:
4:01 am CST Nov 14, 2025
Forecast Valid:
4am CST Nov 14, 2025-6pm CST Nov 20, 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