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.

Overcast

24°F

-4°C

Humidity 88%
Wind Speed N 10 mph
Barometer 30.07 in (1019.8 mb)
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Wind Chill14°F (-10°C)
Last update 7 Dec 7:51 am CST
Extended Forecast for

Grayslake IL

Winter Weather Advisory December 7, 07:57am until December 7, 09:00am
Click here for hazard details and duration
...
  •  
    Winter Weather Advisory December 7, 07:57am until December 7, 09:00am

    NOW until 9:00am Sun

    Winter Weather Advisory

  • Today

    High: 24 °F⇓

    Snow Likely
    then Mostly
    Sunny

  • Tonight

    Tonight: A 40 percent chance of snow showers, mainly between 8pm and midnight. Mostly cloudy, with a temperature rising to around 16 by 5am. North wind around 5 mph becoming west after midnight. Winds could gust as high as 15 mph.

    Low: 13 °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.

    High: 25 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: A 30 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. West southwest wind around 15 mph, with gusts as high as 25 mph. 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 noon, then a slight chance of snow showers. Mostly cloudy, with a high near 35. Chance of precipitation is 40%.

    High: 35 °F

    Chance
    Rain/Snow
    then Slight
    Chance Snow
    Showers

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 16.

    Low: 16 °F

    Mostly Cloudy

Detailed Forecast

Today
Snow likely, mainly before 8am. Cloudy through mid morning, then gradual clearing, with a temperature falling to around 16 by 5pm. North wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. Total daytime snow accumulation of less than a half inch possible.
Tonight
A 40 percent chance of snow showers, mainly between 8pm and midnight. Mostly cloudy, with a temperature rising to around 16 by 5am. 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.
Monday Night
A 30 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. West southwest wind around 15 mph, with gusts as high as 25 mph. 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 noon, then a slight chance of snow showers. Mostly cloudy, with a high near 35. Chance of precipitation is 40%.
Wednesday Night
Mostly cloudy, with a low around 16.
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 9.
Friday
Partly sunny, with a high near 18.
Friday Night
Mostly cloudy, with a low around 0.
Saturday
Partly sunny, with a high near 12.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Grayslake IL
 42.33°N 88.03°W
Last Update:
6:06 am CST Dec 7, 2025
Forecast Valid:
7am 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