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

Hazardous Weather Conditions

Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Mostly Cloudy

62°F

17°C

Humidity 90%
Wind Speed SW 20 G 30 mph
Barometer 29.76 in (1007.3 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 7 Mar 1:51 am CST
Extended Forecast for

Grayslake IL

  • Overnight

    Overnight: Showers and possibly a thunderstorm. Low around 60. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 60 °F

    Showers and
    Breezy

  • Saturday

    Saturday: Showers likely, mainly before noon. Cloudy, with a temperature falling to around 43 by 5pm. Southwest wind around 15 mph becoming west northwest in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    High: 60 °F⇓

    Showers
    Likely then
    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: Cloudy during the early evening, then gradual clearing, with a low around 34. West southwest wind around 10 mph, with gusts as high as 20 mph.

    Low: 34 °F

    Gradual
    Clearing

  • Sunday

    Sunday: Sunny, with a high near 60. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 60 °F

    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 46. Southwest wind around 15 mph, with gusts as high as 25 mph.

    Low: 46 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 68.

    High: 68 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 41.

    Low: 41 °F

    Mostly Clear

  • Tuesday

    Tuesday: Showers likely after noon. Mostly sunny, with a high near 56.

    High: 56 °F

    Sunny then
    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers. Cloudy, with a low around 36.

    Low: 36 °F

    Showers

Detailed Forecast

Overnight
Showers and possibly a thunderstorm. Low around 60. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
Showers likely, mainly before noon. Cloudy, with a temperature falling to around 43 by 5pm. Southwest wind around 15 mph becoming west northwest in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
Cloudy during the early evening, then gradual clearing, with a low around 34. West southwest wind around 10 mph, with gusts as high as 20 mph.
Sunday
Sunny, with a high near 60. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph.
Sunday Night
Mostly clear, with a low around 46. Southwest wind around 15 mph, with gusts as high as 25 mph.
Monday
Sunny, with a high near 68.
Monday Night
Mostly clear, with a low around 41.
Tuesday
Showers likely after noon. Mostly sunny, with a high near 56.
Tuesday Night
Showers. Cloudy, with a low around 36.
Wednesday
A chance of rain and snow showers. Cloudy, with a high near 43.
Wednesday Night
Mostly cloudy, with a low around 26.
Thursday
Mostly sunny, with a high near 44.
Thursday Night
A chance of rain and snow showers. Cloudy, with a low around 33.
Friday
Mostly cloudy, with a high near 52.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Grayslake IL
 42.35°N 88.02°W
Last Update:
2:01 am CST Mar 7, 2026
Forecast Valid:
2am CST Mar 7, 2026-6pm CDT Mar 13, 2026
 
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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