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

27°F

-3°C

Humidity 58%
Wind Speed N 5 mph
Barometer 29.94 in (1015.3 mb)
Dewpoint 14°F (-10°C)
Visibility 10.00 mi
Wind Chill21°F (-6°C)
Last update 6 Dec 11:51 am CST
Extended Forecast for

Long Lake IL

Winter Weather Advisory December 7, 12:00am until December 7, 09:00am
Click here for hazard details and duration
Winter Weather Advisory

  • This Afternoon

    This Afternoon: Mostly cloudy, with a temperature falling to around 25 by 5pm. West northwest wind around 5 mph becoming east.

    High: 29 °F⇓

    Mostly Cloudy

  • Tonight

    Tonight: Snow, mainly after midnight. The snow could be heavy at times. Low around 19. East wind 5 to 10 mph becoming north after midnight. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.

    Low: 19 °F

    Chance Snow
    then Heavy
    Snow

  • Sunday

    Sunday: A 40 percent chance of snow before noon. Cloudy, then gradually becoming mostly sunny, with a temperature rising to near 23 by 11am, then falling to around 15 during the remainder of the day. North wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 23 °F⇓

    Chance Snow
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: A 30 percent chance of snow showers, mainly after midnight. Mostly cloudy, with a low around 8. Wind chill values as low as 1. North wind 5 to 10 mph becoming light north northwest after midnight.

    Low: 8 °F

    Chance Snow
    Showers

  • Monday

    Monday: A 20 percent chance of snow showers before noon. Partly sunny, with a high near 24. Light and variable wind becoming south southwest 5 to 10 mph in the morning. Winds could gust as high as 15 mph.

    High: 24 °F

    Slight Chance
    Snow Showers
    then Partly
    Sunny

  • Monday Night

    Monday Night: A 40 percent chance of snow, mainly after midnight. Mostly cloudy, with a low around 12.

    Low: 12 °F

    Chance Snow

  • Tuesday

    Tuesday: A slight chance of snow before noon, then a slight chance of rain and snow. Mostly cloudy, with a high near 36. Chance of precipitation is 20%.

    High: 36 °F

    Slight Chance
    Snow then
    Slight Chance
    Rain/Snow

  • Tuesday Night

    Tuesday Night: Rain and snow, becoming all rain after midnight. Cloudy, with a low around 30.

    Low: 30 °F

    Rain/Snow
    then Rain

  • Wednesday

    Wednesday: Rain and snow likely before noon, then a chance of snow. Mostly cloudy, with a high near 33.

    High: 33 °F

    Rain/Snow
    Likely then
    Chance Snow

Detailed Forecast

This Afternoon
Mostly cloudy, with a temperature falling to around 25 by 5pm. West northwest wind around 5 mph becoming east.
Tonight
Snow, mainly after midnight. The snow could be heavy at times. Low around 19. East wind 5 to 10 mph becoming north after midnight. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.
Sunday
A 40 percent chance of snow before noon. Cloudy, then gradually becoming mostly sunny, with a temperature rising to near 23 by 11am, then falling to around 15 during the remainder of the day. North wind 10 to 15 mph, with gusts as high as 20 mph.
Sunday Night
A 30 percent chance of snow showers, mainly after midnight. Mostly cloudy, with a low around 8. Wind chill values as low as 1. North wind 5 to 10 mph becoming light north northwest after midnight.
Monday
A 20 percent chance of snow showers before noon. Partly sunny, with a high near 24. Light and variable wind becoming south southwest 5 to 10 mph in the morning. Winds could gust as high as 15 mph.
Monday Night
A 40 percent chance of snow, mainly after midnight. Mostly cloudy, with a low around 12.
Tuesday
A slight chance of snow before noon, then a slight chance of rain and snow. Mostly cloudy, with a high near 36. Chance of precipitation is 20%.
Tuesday Night
Rain and snow, becoming all rain after midnight. Cloudy, with a low around 30.
Wednesday
Rain and snow likely before noon, then a chance of snow. Mostly cloudy, with a high near 33.
Wednesday Night
A chance of snow before midnight. Mostly cloudy, with a low around 12.
Thursday
A chance of snow. Mostly cloudy, with a high near 23.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 10.
Friday
Partly sunny, with a high near 18.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Long Lake IL
 42.38°N 88.14°W
Last Update:
12:06 pm CST Dec 6, 2025
Forecast Valid:
12pm CST Dec 6, 2025-6pm CST Dec 12, 2025
 
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