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

Atmospheric River Impacting California

A major winter storm with an active atmospheric river is inundating California the next few days with a tremendous amount of moisture. Heavy to excessive rainfall is likely from central to southern California that may produce flooding along with mudslides and dangerous debris flows near recent and vulnerable burn scars. A significant amount of snow is anticipated in the Sierra with feet of snow. Read More >

Hazardous Weather Conditions

Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Fair

12°F

-11°C

Humidity 70%
Wind Speed NW 7 mph
Barometer 30.48 in (1034.6 mb)
Dewpoint 4°F (-16°C)
Visibility 10.00 mi
Wind Chill1°F (-17°C)
Last update 27 Jan 8:55 pm CST
Extended Forecast for

Grayslake IL

  • Tonight

    Tonight: Mostly clear, with a low around 5. Wind chill values as low as -3. North northwest wind 5 to 10 mph.

    Mostly Clear

    Low: 5 °F

  • Thursday

    Thursday: Sunny, with a high near 22. Wind chill values as low as -4. Northwest wind around 5 mph.

    Sunny

    High: 22 °F

  • Thursday
    Night

    Thursday Night: Partly cloudy, with a low around 10. Northwest wind around 5 mph becoming calm.

    Partly Cloudy

    Low: 10 °F

  • Friday

    Friday: Mostly sunny, with a high near 29. Light east wind becoming southeast 5 to 10 mph in the morning.

    Mostly Sunny

    High: 29 °F

  • Friday
    Night

    Friday Night: Mostly cloudy, with a low around 22. Southeast wind 5 to 10 mph.

    Mostly Cloudy

    Low: 22 °F

  • Saturday

    Saturday: A 30 percent chance of snow, mainly after 3pm. Mostly cloudy, with a high near 32.

    Mostly Cloudy
    then Chance
    Snow

    High: 32 °F

  • Saturday
    Night

    Saturday Night: Snow likely. Cloudy, with a low around 28. Chance of precipitation is 70%.

    Snow Likely

    Low: 28 °F

  • Sunday

    Sunday: A chance of snow. Cloudy, with a high near 31.

    Chance Snow

    High: 31 °F

  • Sunday
    Night

    Sunday Night: A slight chance of snow before midnight. Cloudy, with a low around 24.

    Slight Chance
    Snow then
    Mostly Cloudy

    Low: 24 °F

Detailed Forecast

Tonight
Mostly clear, with a low around 5. Wind chill values as low as -3. North northwest wind 5 to 10 mph.
Thursday
Sunny, with a high near 22. Wind chill values as low as -4. Northwest wind around 5 mph.
Thursday Night
Partly cloudy, with a low around 10. Northwest wind around 5 mph becoming calm.
Friday
Mostly sunny, with a high near 29. Light east wind becoming southeast 5 to 10 mph in the morning.
Friday Night
Mostly cloudy, with a low around 22. Southeast wind 5 to 10 mph.
Saturday
A 30 percent chance of snow, mainly after 3pm. Mostly cloudy, with a high near 32.
Saturday Night
Snow likely. Cloudy, with a low around 28. Chance of precipitation is 70%.
Sunday
A chance of snow. Cloudy, with a high near 31.
Sunday Night
A slight chance of snow before midnight. Cloudy, with a low around 24.
Monday
Mostly cloudy, with a high near 31.
Monday Night
Mostly cloudy, with a low around 15.
Tuesday
Mostly sunny, with a high near 32.
Tuesday Night
Mostly cloudy, with a low around 20.
Wednesday
Mostly cloudy, with a high near 35.
Click Map For Forecast
Disclaimer
Map Legend
Point Forecast:
Grayslake IL
 42.35°N 88.02°W
Last Update:
9:15 pm CST Jan 27, 2021
Forecast Valid:
9pm CST Jan 27, 2021-6pm CST Feb 3, 2021
 
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