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

85°F

29°C

Humidity 51%
Wind Speed SW 18 G 29 mph
Barometer 29.77 in (1006.9 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 12 Oct 1:51 pm CDT
Extended Forecast for

Long Lake IL

  • Columbus Day

    Columbus Day: Mostly sunny, with a high near 85. South southwest wind around 15 mph, with gusts as high as 25 mph.

    High: 85 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 70. Southwest wind around 10 mph, with gusts as high as 20 mph.

    Low: 70 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 80. West wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 80 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Showers and thunderstorms likely. Increasing clouds, with a low around 58. North northwest wind around 5 mph becoming calm. Chance of precipitation is 70%.

    Low: 58 °F

    Showers
    Likely

  • Wednesday

    Wednesday: A 30 percent chance of showers, mainly before 7am. Cloudy, with a high near 67. Northeast wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 67 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 51.

    Low: 51 °F

    Mostly Cloudy

  • Thursday

    Thursday: A chance of showers, then showers and possibly a thunderstorm after 1pm. High near 63. Chance of precipitation is 80%.

    High: 63 °F

    Chance
    Showers then
    Showers

  • Thursday Night

    Thursday Night: A chance of showers before 1am. Cloudy, with a low around 45.

    Low: 45 °F

    Chance
    Showers

  • Friday

    Friday: Partly sunny, with a high near 58. Breezy.

    High: 58 °F

    Partly Sunny
    and Breezy

Detailed Forecast

Columbus Day
Mostly sunny, with a high near 85. South southwest wind around 15 mph, with gusts as high as 25 mph.
Tonight
Partly cloudy, with a low around 70. Southwest wind around 10 mph, with gusts as high as 20 mph.
Tuesday
Sunny, with a high near 80. West wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday Night
Showers and thunderstorms likely. Increasing clouds, with a low around 58. North northwest wind around 5 mph becoming calm. Chance of precipitation is 70%.
Wednesday
A 30 percent chance of showers, mainly before 7am. Cloudy, with a high near 67. Northeast wind 5 to 10 mph, with gusts as high as 15 mph.
Wednesday Night
Mostly cloudy, with a low around 51.
Thursday
A chance of showers, then showers and possibly a thunderstorm after 1pm. High near 63. Chance of precipitation is 80%.
Thursday Night
A chance of showers before 1am. Cloudy, with a low around 45.
Friday
Partly sunny, with a high near 58. Breezy.
Friday Night
Partly cloudy, with a low around 35.
Saturday
Sunny, with a high near 58.
Saturday Night
Mostly clear, with a low around 38.
Sunday
Sunny, with a high near 63.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Long Lake IL
 42.38°N 88.14°W
Last Update:
1:21 pm CDT Oct 12, 2026
Forecast Valid:
2pm CDT Oct 12, 2026-6pm CDT Oct 18, 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