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

14°F

-10°C

Humidity 67%
Wind Speed W 9 mph
Barometer 30.00 in (1017.9 mb)
Dewpoint 5°F (-15°C)
Visibility 10.00 mi
Wind Chill2°F (-17°C)
Last update 15 Jan 5:51 am CST
Extended Forecast for

Long Lake IL

  • Today

    Today: Mostly sunny, with a high near 24. Wind chill values as low as -1. North northwest wind 5 to 10 mph becoming south southwest in the afternoon. Winds could gust as high as 20 mph.

    High: 24 °F

    Mostly Sunny

  • Tonight

    Tonight: Snow. Temperature rising to around 27 by 4am. South southwest wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New snow accumulation of around an inch possible.

    Low: 23 °F⇑

    Snow Likely
    then Snow

  • Friday

    Friday: Snow showers likely, mainly before noon. Mostly cloudy, with a high near 36. West wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 36 °F

    Snow Showers
    Likely

  • Friday Night

    Friday Night: A 50 percent chance of snow. Mostly cloudy, with a low around 13. Wind chill values as low as 1. West wind around 15 mph, with gusts as high as 20 mph.

    Low: 13 °F

    Chance Snow

  • Saturday

    Saturday: A 40 percent chance of snow. Mostly cloudy, with a high near 17. West wind around 15 mph, with gusts as high as 25 mph.

    High: 17 °F

    Chance Snow

  • Saturday Night

    Saturday Night: A 20 percent chance of snow. Mostly cloudy, with a low around 6.

    Low: 6 °F

    Slight Chance
    Snow

  • Sunday

    Sunday: A 20 percent chance of snow after noon. Mostly cloudy, with a high near 16.

    High: 16 °F

    Partly Sunny
    then Slight
    Chance Snow

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 4.

    Low: 4 °F

    Mostly Cloudy

  • M.L.King Day

    M.L.King Day: Partly sunny, with a high near 11. Blustery.

    High: 11 °F

    Partly Sunny
    and Blustery

Detailed Forecast

Today
Mostly sunny, with a high near 24. Wind chill values as low as -1. North northwest wind 5 to 10 mph becoming south southwest in the afternoon. Winds could gust as high as 20 mph.
Tonight
Snow. Temperature rising to around 27 by 4am. South southwest wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New snow accumulation of around an inch possible.
Friday
Snow showers likely, mainly before noon. Mostly cloudy, with a high near 36. West wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Friday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 13. Wind chill values as low as 1. West wind around 15 mph, with gusts as high as 20 mph.
Saturday
A 40 percent chance of snow. Mostly cloudy, with a high near 17. West wind around 15 mph, with gusts as high as 25 mph.
Saturday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 6.
Sunday
A 20 percent chance of snow after noon. Mostly cloudy, with a high near 16.
Sunday Night
Mostly cloudy, with a low around 4.
M.L.King Day
Partly sunny, with a high near 11. Blustery.
Monday Night
Partly cloudy, with a low around 0.
Tuesday
Mostly sunny, with a high near 16.
Tuesday Night
Mostly cloudy, with a low around 7.
Wednesday
Partly sunny, with a high near 23.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Long Lake IL
 42.38°N 88.14°W
Last Update:
3:06 am CST Jan 15, 2026
Forecast Valid:
6am CST Jan 15, 2026-6pm CST Jan 21, 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