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.

Overcast

24°F

-4°C

Humidity 84%
Wind Speed S 13 mph
Barometer 30.01 in (1018.1 mb)
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Wind Chill12°F (-11°C)
Last update 18 Mar 6:51 am CDT
Extended Forecast for

Long Lake IL

  • Today

    Today: A 40 percent chance of snow before 9am. Cloudy, then gradually becoming mostly sunny, with a high near 38. Southwest wind 10 to 15 mph.

    High: 38 °F

    Chance Snow
    then Mostly
    Sunny

  • Tonight

    Tonight: Scattered showers after 1am. Increasing clouds, with a low around 31. Southwest wind around 5 mph, with gusts as high as 10 mph. Chance of precipitation is 50%.

    Low: 31 °F

    Mostly Cloudy
    then
    Scattered
    Showers

  • Thursday

    Thursday: Isolated showers before 1pm. Partly sunny, with a high near 48. South wind around 5 mph becoming northeast in the afternoon. Chance of precipitation is 20%.

    High: 48 °F

    Isolated
    Showers

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 36. Northeast wind around 5 mph becoming south southwest after midnight.

    Low: 36 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 62. Southwest wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 62 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 38.

    Low: 38 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 66.

    High: 66 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 41.

    Low: 41 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 56.

    High: 56 °F

    Mostly Cloudy

Detailed Forecast

Today
A 40 percent chance of snow before 9am. Cloudy, then gradually becoming mostly sunny, with a high near 38. Southwest wind 10 to 15 mph.
Tonight
Scattered showers after 1am. Increasing clouds, with a low around 31. Southwest wind around 5 mph, with gusts as high as 10 mph. Chance of precipitation is 50%.
Thursday
Isolated showers before 1pm. Partly sunny, with a high near 48. South wind around 5 mph becoming northeast in the afternoon. Chance of precipitation is 20%.
Thursday Night
Mostly cloudy, with a low around 36. Northeast wind around 5 mph becoming south southwest after midnight.
Friday
Mostly cloudy, with a high near 62. Southwest wind 5 to 10 mph, with gusts as high as 15 mph.
Friday Night
Mostly cloudy, with a low around 38.
Saturday
Mostly sunny, with a high near 66.
Saturday Night
Mostly cloudy, with a low around 41.
Sunday
Mostly cloudy, with a high near 56.
Sunday Night
Partly cloudy, with a low around 27.
Monday
Partly sunny, with a high near 41.
Monday Night
Partly cloudy, with a low around 28.
Tuesday
Partly sunny, with a high near 51.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Long Lake IL
 42.38°N 88.14°W
Last Update:
7:41 am CDT Mar 18, 2026
Forecast Valid:
7am CDT Mar 18, 2026-6pm CDT Mar 24, 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