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

45°F

7°C

Humidity 90%
Wind Speed N 8 mph
Barometer 30.22 in (1023.8 mb)
Dewpoint 42°F (6°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 10 Apr 9:51 am CDT
Extended Forecast for

Long Lake IL

  • Today

    Today: Mostly cloudy, with a high near 51. North northwest wind around 10 mph, with gusts as high as 15 mph.

    High: 51 °F

    Mostly Cloudy

  • Tonight

    Tonight: Partly cloudy, with a low around 33. East southeast wind around 5 mph, with gusts as high as 10 mph.

    Low: 33 °F

    Partly Cloudy

  • Saturday

    Saturday: A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 51. East southeast wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 51 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Cloudy, with a low around 45. East southeast wind 10 to 15 mph becoming south after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 60%.

    Low: 45 °F

    Showers
    Likely

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after 4pm. Mostly cloudy, with a high near 74. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 50%.

    High: 74 °F

    Breezy.
    Slight Chance
    Showers then
    Chance
    Showers

  • Sunday Night

    Sunday Night: A 50 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 61. Breezy.

    Low: 61 °F

    Chance
    Showers and
    Breezy

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 77.

    High: 77 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: Showers likely. Mostly cloudy, with a low around 63.

    Low: 63 °F

    Showers
    Likely

  • Tuesday

    Tuesday: Showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 79.

    High: 79 °F

    Mostly Cloudy
    then Showers
    Likely

Detailed Forecast

Today
Mostly cloudy, with a high near 51. North northwest wind around 10 mph, with gusts as high as 15 mph.
Tonight
Partly cloudy, with a low around 33. East southeast wind around 5 mph, with gusts as high as 10 mph.
Saturday
A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 51. East southeast wind 5 to 10 mph, with gusts as high as 15 mph.
Saturday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Cloudy, with a low around 45. East southeast wind 10 to 15 mph becoming south after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 60%.
Sunday
A chance of showers, with thunderstorms also possible after 4pm. Mostly cloudy, with a high near 74. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 50%.
Sunday Night
A 50 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 61. Breezy.
Monday
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 77.
Monday Night
Showers likely. Mostly cloudy, with a low around 63.
Tuesday
Showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 79.
Tuesday Night
Showers and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 59.
Wednesday
A chance of showers. Partly sunny, with a high near 71.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 50.
Thursday
A chance of showers. Mostly sunny, with a high near 74.
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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 am CDT Apr 10, 2026
Forecast Valid:
10am CDT Apr 10, 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