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

23°F

-5°C

Humidity 78%
Wind Speed S 15 G 22 mph
Barometer 29.59 in (1003.8 mb)
Dewpoint 17°F (-8°C)
Visibility 10.00 mi
Wind Chill10°F (-12°C)
Last update 16 Jan 1:51 am CST
Extended Forecast for

Long Lake IL

  • Overnight

    Overnight: A slight chance of snow before 2am, then snow likely after 4am. Cloudy, with a low around 22. South southwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. Total nighttime snow accumulation of less than one inch possible.

    Low: 22 °F

    Snow Likely

  • Friday

    Friday: Snow, mainly before 11am, then a chance of snow showers after noon. High near 35. West wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.

    High: 35 °F

    Snow then
    Chance Snow
    Showers

  • Friday Night

    Friday Night: A 30 percent chance of snow showers, mainly before 9pm. Mostly cloudy, with a low around 14. West wind around 15 mph, with gusts as high as 25 mph.

    Low: 14 °F

    Chance Snow
    Showers

  • Saturday

    Saturday: A 40 percent chance of snow after noon. Mostly cloudy, with a high near 19. Wind chill values as low as -1. West wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 19 °F

    Partly Sunny
    then Chance
    Snow

  • Saturday Night

    Saturday Night: A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 7. West wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 7 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Sunday

    Sunday: A 30 percent chance of snow after noon. Mostly cloudy, with a high near 19.

    High: 19 °F

    Mostly Cloudy
    then Chance
    Snow

  • Sunday Night

    Sunday Night: A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 1. Blustery.

    Low: 1 °F

    Slight Chance
    Snow then
    Partly Cloudy
    and Blustery

  • M.L.King Day

    M.L.King Day: Partly sunny and cold, with a high near 7. Blustery.

    High: 7 °F

    Cold and
    Blustery

  • Monday Night

    Monday Night: Partly cloudy, with a low around 0.

    Low: 0 °F

    Partly Cloudy

Detailed Forecast

Overnight
A slight chance of snow before 2am, then snow likely after 4am. Cloudy, with a low around 22. South southwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. Total nighttime snow accumulation of less than one inch possible.
Friday
Snow, mainly before 11am, then a chance of snow showers after noon. High near 35. West wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.
Friday Night
A 30 percent chance of snow showers, mainly before 9pm. Mostly cloudy, with a low around 14. West wind around 15 mph, with gusts as high as 25 mph.
Saturday
A 40 percent chance of snow after noon. Mostly cloudy, with a high near 19. Wind chill values as low as -1. West wind 10 to 15 mph, with gusts as high as 25 mph.
Saturday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 7. West wind 10 to 15 mph, with gusts as high as 20 mph.
Sunday
A 30 percent chance of snow after noon. Mostly cloudy, with a high near 19.
Sunday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 1. Blustery.
M.L.King Day
Partly sunny and cold, with a high near 7. Blustery.
Monday Night
Partly cloudy, with a low around 0.
Tuesday
Partly sunny, with a high near 16.
Tuesday Night
A chance of snow. Mostly cloudy, with a low around 10.
Wednesday
Mostly cloudy, with a high near 27.
Wednesday Night
Mostly cloudy, with a low around 12.
Thursday
Partly sunny, with a high near 24.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Long Lake IL
 42.38°N 88.14°W
Last Update:
1:41 am CST Jan 16, 2026
Forecast Valid:
1am CST Jan 16, 2026-6pm CST Jan 22, 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