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

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Fair

63°F

17°C

Humidity 41%
Wind Speed Vrbl 5 mph
Barometer 30.03 in (1016.7 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 10 Nov 12:51 pm CST
Extended Forecast for

Grayslake IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 65. West wind around 5 mph.

    High: 65 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 40. Calm wind.

    Low: 40 °F

    Increasing
    Clouds

  • Veterans Day

    Veterans Day: Isolated showers between 8am and 5pm. Mostly cloudy, with a high near 54. Light and variable wind becoming north northeast 5 to 10 mph in the morning. Chance of precipitation is 20%.

    High: 54 °F

    Isolated
    Showers

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 34. North wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 34 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 20 percent chance of showers before noon. Partly sunny, with a high near 45. North wind 10 to 15 mph, with gusts as high as 30 mph.

    High: 45 °F

    Slight Chance
    Showers then
    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 29.

    Low: 29 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 43.

    High: 43 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 26.

    Low: 26 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 46.

    High: 46 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 65. West wind around 5 mph.
Tonight
Increasing clouds, with a low around 40. Calm wind.
Veterans Day
Isolated showers between 8am and 5pm. Mostly cloudy, with a high near 54. Light and variable wind becoming north northeast 5 to 10 mph in the morning. Chance of precipitation is 20%.
Wednesday Night
Mostly cloudy, with a low around 34. North wind 10 to 15 mph, with gusts as high as 20 mph.
Thursday
A 20 percent chance of showers before noon. Partly sunny, with a high near 45. North wind 10 to 15 mph, with gusts as high as 30 mph.
Thursday Night
Partly cloudy, with a low around 29.
Friday
Mostly sunny, with a high near 43.
Friday Night
Mostly clear, with a low around 26.
Saturday
Sunny, with a high near 46.
Saturday Night
Mostly clear, with a low around 29.
Sunday
Mostly sunny, with a high near 48.
Sunday Night
Partly cloudy, with a low around 33.
Monday
Mostly sunny, with a high near 50.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Grayslake IL
 42.33°N 88.03°W
Last Update:
1:20 pm CST Nov 10, 2026
Forecast Valid:
1pm CST Nov 10, 2026-6pm CST Nov 16, 2026
 
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