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.

Overcast

52°F

11°C

Humidity 80%
Wind Speed NW 3 mph
Barometer 29.84 in (1010.6 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 5 Nov 4:51 pm CST
Extended Forecast for

Grayslake IL

  • This Afternoon

    This Afternoon: Showers likely with areas of drizzle. Cloudy, with a high near 51. Northwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 51 °F

    Showers
    Likely

  • Tonight

    Tonight: Showers likely with areas of drizzle before 9pm, then patchy drizzle with isolated showers between 9pm and midnight. Cloudy, then gradually becoming partly cloudy, with a low around 36. North wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 36 °F

    Showers
    Likely then
    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 45. North northwest wind 10 to 15 mph, with gusts as high as 30 mph.

    High: 45 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 31. Northwest wind 5 to 15 mph.

    Low: 31 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 51. Northwest wind 5 to 10 mph.

    High: 51 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 36.

    Low: 36 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 58.

    High: 58 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 35.

    Low: 35 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 63.

    High: 63 °F

    Sunny

Detailed Forecast

This Afternoon
Showers likely with areas of drizzle. Cloudy, with a high near 51. Northwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Showers likely with areas of drizzle before 9pm, then patchy drizzle with isolated showers between 9pm and midnight. Cloudy, then gradually becoming partly cloudy, with a low around 36. North wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Mostly sunny, with a high near 45. North northwest wind 10 to 15 mph, with gusts as high as 30 mph.
Friday Night
Partly cloudy, with a low around 31. Northwest wind 5 to 15 mph.
Saturday
Mostly sunny, with a high near 51. Northwest wind 5 to 10 mph.
Saturday Night
Mostly clear, with a low around 36.
Sunday
Sunny, with a high near 58.
Sunday Night
Clear, with a low around 35.
Monday
Sunny, with a high near 63.
Monday Night
Mostly clear, with a low around 39.
Tuesday
Sunny, with a high near 60.
Tuesday Night
Partly cloudy, with a low around 36.
Veterans Day
Mostly sunny, with a high near 57.
Wednesday Night
Partly cloudy, with a low around 36.
Thursday
Mostly sunny, with a high near 55.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Grayslake IL
 42.35°N 88.05°W
Last Update:
1:51 pm CST Nov 5, 2026
Forecast Valid:
5pm CST Nov 5, 2026-6pm CST Nov 12, 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