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

29°F

-2°C

Humidity 72%
Wind Speed Calm
Barometer 29.90 in (1014.0 mb)
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Last update 6 Dec 8:51 am CST
Extended Forecast for

Mc Henry IL

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

  • Today

    Today: Mostly cloudy, with a high near 26. West northwest wind 5 to 10 mph becoming light and variable in the afternoon.

    High: 26 °F

    Mostly Cloudy

  • Tonight

    Tonight: Snow, mainly after midnight. The snow could be heavy at times. Low around 19. Light and variable wind becoming north northeast 5 to 10 mph after midnight. Winds could gust as high as 15 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.

    Low: 19 °F

    Chance Snow
    then Heavy
    Snow

  • Sunday

    Sunday: A 40 percent chance of snow before noon. Cloudy through mid morning, then gradual clearing, with a temperature falling to around 14 by 5pm. North wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 22 °F⇓

    Chance Snow
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: A 20 percent chance of snow showers. Mostly cloudy, with a low around 7. Wind chill values as low as zero. North wind 5 to 10 mph becoming light north northwest after midnight. Winds could gust as high as 15 mph.

    Low: 7 °F

    Slight Chance
    Snow Showers

  • Monday

    Monday: Partly sunny, with a high near 23. Light and variable wind becoming south southwest 5 to 10 mph in the morning. Winds could gust as high as 15 mph.

    High: 23 °F

    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 29.

    Low: 29 °F

    Rain/Snow
    then Rain

  • Wednesday

    Wednesday: A chance of rain and snow before noon, then a chance of snow. Mostly cloudy, with a high near 32.

    High: 32 °F

    Chance
    Rain/Snow
    then Chance
    Snow

Detailed Forecast

Today
Mostly cloudy, with a high near 26. West northwest wind 5 to 10 mph becoming light and variable in the afternoon.
Tonight
Snow, mainly after midnight. The snow could be heavy at times. Low around 19. Light and variable wind becoming north northeast 5 to 10 mph after midnight. Winds could gust as high as 15 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.
Sunday
A 40 percent chance of snow before noon. Cloudy through mid morning, then gradual clearing, with a temperature falling to around 14 by 5pm. North wind 10 to 15 mph, with gusts as high as 20 mph.
Sunday Night
A 20 percent chance of snow showers. Mostly cloudy, with a low around 7. Wind chill values as low as zero. North wind 5 to 10 mph becoming light north northwest after midnight. Winds could gust as high as 15 mph.
Monday
Partly sunny, with a high near 23. 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 29.
Wednesday
A chance of rain and snow before noon, then a chance of snow. Mostly cloudy, with a high near 32.
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 22.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 9.
Friday
Partly sunny, with a high near 18.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mc Henry IL
 42.34°N 88.29°W
Last Update:
9:06 am CST Dec 6, 2025
Forecast Valid:
9am 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