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.

Light Rain

41°F

5°C

Humidity 86%
Wind Speed NE 6 mph
Barometer 30.14 in (1021.0 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Wind Chill37°F (3°C)
Last update 9 Apr 10:51 pm CDT
Extended Forecast for

Long Lake IL

  • Tonight

    Tonight: Rain and possibly a thunderstorm. Low around 41. Northeast wind 5 to 10 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 41 °F

    Rain

  • Friday

    Friday: A chance of showers before 10am, then a slight chance of showers after 3pm. Mostly cloudy, with a high near 52. North wind around 10 mph. Chance of precipitation is 40%.

    High: 52 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Mostly clear, with a low around 33. East northeast wind around 5 mph becoming calm in the evening.

    Low: 33 °F

    Mostly Clear

  • Saturday

    Saturday: Increasing clouds, with a high near 55. East southeast wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 55 °F

    Increasing
    Clouds

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 46. East southeast wind 10 to 15 mph becoming south after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 40%.

    Low: 46 °F

    Chance
    Showers

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 73. Breezy. Chance of precipitation is 40%.

    High: 73 °F

    Chance
    Showers and
    Breezy

  • Sunday Night

    Sunday Night: A 50 percent chance of showers and thunderstorms. Cloudy, with a low around 61. Breezy.

    Low: 61 °F

    Chance
    Showers and
    Breezy

  • Monday

    Monday: Mostly cloudy, with a high near 77.

    High: 77 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 62.

    Low: 62 °F

    Showers
    Likely

Detailed Forecast

Tonight
Rain and possibly a thunderstorm. Low around 41. Northeast wind 5 to 10 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Friday
A chance of showers before 10am, then a slight chance of showers after 3pm. Mostly cloudy, with a high near 52. North wind around 10 mph. Chance of precipitation is 40%.
Friday Night
Mostly clear, with a low around 33. East northeast wind around 5 mph becoming calm in the evening.
Saturday
Increasing clouds, with a high near 55. East southeast wind 5 to 10 mph, with gusts as high as 15 mph.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 46. East southeast wind 10 to 15 mph becoming south after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 40%.
Sunday
A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 73. Breezy. Chance of precipitation is 40%.
Sunday Night
A 50 percent chance of showers and thunderstorms. Cloudy, with a low around 61. Breezy.
Monday
Mostly cloudy, with a high near 77.
Monday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 62.
Tuesday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 79.
Tuesday Night
Showers and possibly a thunderstorm. Mostly cloudy, with a low around 56.
Wednesday
A chance of showers. Mostly cloudy, with a high near 70.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 49.
Thursday
Mostly sunny, with a high near 72.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Long Lake IL
 42.38°N 88.14°W
Last Update:
8:46 pm CDT Apr 9, 2026
Forecast Valid:
11pm CDT Apr 9, 2026-6pm CDT Apr 16, 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