National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Tracking Weekend Storm Impacts

A storm and trailing cold front will continue to slowly move through the Gulf Coast and Southeast U.S. through this weekend with widespread rain showers and isolated thunderstorms. A fast-moving clipper storm may bring several inches of snow to the north-central Plains, Midwest, eastern Great Lakes, and Northeast regions this weekend. Read More >

Hazardous Weather Conditions

Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Light Snow Fog/Mist

28°F

-2°C

Humidity 96%
Wind Speed N 3 mph
Barometer 30.00 in (1017.2 mb)
Dewpoint 27°F (-3°C)
Visibility 1.25 mi
Last update 7 Dec 3:51 am CST
Extended Forecast for

Grayslake IL

Winter Weather Advisory December 7, 04:47am until December 7, 09:00am
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory December 7, 04:47am until December 7, 09:00am

    NOW until 9:00am Sun

    Winter Weather Advisory

  • Overnight

    Low: 23 °F

    Heavy Snow

  • Sunday

    Sunday: Snow, mainly before 8am. Temperature falling to around 15 by 5pm. North wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    High: 24 °F⇓

    Snow then
    Sunny

  • Sunday Night

    Sunday Night: A 40 percent chance of snow showers, mainly between 7pm and midnight. Mostly cloudy, with a steady temperature around 14. Wind chill values as low as 1. North wind around 5 mph becoming west after midnight. Winds could gust as high as 15 mph.

    Low: 14 °F

    Chance Snow
    Showers

  • Monday

    Monday: Mostly cloudy, with a high near 25. Light west southwest wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 15 mph.

    High: 25 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: A 40 percent chance of snow, mainly after midnight. Mostly cloudy, with a low around 15. South wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 15 °F

    Chance Snow

  • Tuesday

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

    High: 36 °F

    Mostly Cloudy
    then Slight
    Chance
    Rain/Snow

  • Tuesday Night

    Tuesday Night: Rain, possibly mixed with snow, becoming all rain after 9pm. Low around 33. Chance of precipitation is 90%.

    Low: 33 °F

    Rain/Snow
    then Rain
    Likely

  • Wednesday

    Wednesday: A chance of rain and snow showers before 9am, then a chance of snow showers between 9am and noon. Mostly cloudy, with a high near 35.

    High: 35 °F

    Chance
    Rain/Snow
    then Mostly
    Cloudy

Detailed Forecast

Overnight
Snow. The snow could be heavy at times. Low around 23. North wind around 5 mph, with gusts as high as 15 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of 3 to 5 inches possible.
Sunday
Snow, mainly before 8am. Temperature falling to around 15 by 5pm. North wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Sunday Night
A 40 percent chance of snow showers, mainly between 7pm and midnight. Mostly cloudy, with a steady temperature around 14. Wind chill values as low as 1. North wind around 5 mph becoming west after midnight. Winds could gust as high as 15 mph.
Monday
Mostly cloudy, with a high near 25. Light west southwest wind becoming south 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 15. South wind 10 to 15 mph, with gusts as high as 25 mph.
Tuesday
A slight chance of rain and snow after noon. Mostly cloudy, with a high near 36. Chance of precipitation is 20%.
Tuesday Night
Rain, possibly mixed with snow, becoming all rain after 9pm. Low around 33. Chance of precipitation is 90%.
Wednesday
A chance of rain and snow showers before 9am, then a chance of snow showers between 9am and noon. Mostly cloudy, with a high near 35.
Wednesday Night
Mostly cloudy, with a low around 15.
Thursday
A chance of snow after noon. Mostly cloudy, with a high near 26.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 8.
Friday
Partly sunny, with a high near 17.
Friday Night
Mostly cloudy, with a low around 0.
Saturday
Partly sunny, with a high near 12.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Grayslake IL
 42.37°N 88.05°W
Last Update:
4:26 am CST Dec 7, 2025
Forecast Valid:
4am CST Dec 7, 2025-6pm CST Dec 13, 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