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

62°F

17°C

Humidity 62%
Wind Speed S 6 mph
Barometer 30.04 in (1016.3 mb)
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Last update 10 Oct 11:51 pm CDT
Extended Forecast for

Long Lake IL

  • Overnight

    Overnight: Partly cloudy, with a low around 54. South wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 54 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 78. North wind around 5 mph becoming south in the afternoon.

    High: 78 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 59. South wind around 5 mph, with gusts as high as 15 mph.

    Low: 59 °F

    Mostly Clear

  • Columbus Day

    Columbus Day: Mostly sunny, with a high near 83. Southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 83 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 65. Southwest wind around 10 mph, with gusts as high as 15 mph.

    Low: 65 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Tuesday

    Tuesday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers. Partly cloudy, with a low around 54.

    Low: 54 °F

    Slight Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers after 1pm. Partly sunny, with a high near 68.

    High: 68 °F

    Partly Sunny
    then Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers after 1am. Mostly cloudy, with a low around 51.

    Low: 51 °F

    Mostly Cloudy
    then Chance
    Showers

Detailed Forecast

Overnight
Partly cloudy, with a low around 54. South wind 5 to 10 mph, with gusts as high as 20 mph.
Sunday
Sunny, with a high near 78. North wind around 5 mph becoming south in the afternoon.
Sunday Night
Mostly clear, with a low around 59. South wind around 5 mph, with gusts as high as 15 mph.
Columbus Day
Mostly sunny, with a high near 83. Southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Monday Night
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 65. Southwest wind around 10 mph, with gusts as high as 15 mph.
Tuesday
Mostly sunny, with a high near 76.
Tuesday Night
A 20 percent chance of showers. Partly cloudy, with a low around 54.
Wednesday
A chance of showers after 1pm. Partly sunny, with a high near 68.
Wednesday Night
A chance of showers after 1am. Mostly cloudy, with a low around 51.
Thursday
A chance of showers. Mostly cloudy, with a high near 67.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 47.
Friday
Partly sunny, with a high near 62.
Friday Night
Partly cloudy, with a low around 39.
Saturday
Mostly sunny, with a high near 56.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Long Lake IL
 42.38°N 88.14°W
Last Update:
11:26 pm CDT Oct 10, 2026
Forecast Valid:
12am CDT Oct 11, 2026-6pm CDT Oct 17, 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