Hazardous Weather Conditions

Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Overcast

38°F

3°C

Humidity 73%
Wind Speed SE 16 mph
Barometer 30.26 in (1025.6 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill29°F (-2°C)
Last update 8 Apr 7:51 am CDT
Extended Forecast for

Grayslake IL

  • Today

    Today: Cloudy through mid morning, then gradual clearing, with a high near 66. Breezy, with a south wind 15 to 25 mph, with gusts as high as 35 mph.

    High: 66 °F

    Gradual
    Clearing and
    Breezy

  • Tonight

    Tonight: Showers, mainly before 4am.  Low around 49. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph.  Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 49 °F

    Breezy.
    Chance
    Showers then
    Showers

  • Thursday

    Thursday: Mostly sunny, with a high near 63. West wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 63 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Showers.  Low around 42. Northwest wind around 5 mph becoming east northeast in the evening.  Chance of precipitation is 90%.

    Low: 42 °F

    Showers
    Likely then
    Showers

  • Friday

    Friday: A 30 percent chance of showers before 1pm.  Mostly cloudy, with a high near 52. North wind around 5 mph, with gusts as high as 10 mph.

    High: 52 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Mostly clear, with a low around 35.

    Low: 35 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 55.

    High: 55 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A chance of showers after 1am.  Mostly cloudy, with a low around 46.

    Low: 46 °F

    Mostly Cloudy
    then Chance
    Showers

  • Sunday

    Sunday: A chance of showers.  Mostly cloudy, with a high near 76.

    High: 76 °F

    Chance
    Showers

Detailed Forecast

Today
Cloudy through mid morning, then gradual clearing, with a high near 66. Breezy, with a south wind 15 to 25 mph, with gusts as high as 35 mph.
Tonight
Showers, mainly before 4am. Low around 49. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday
Mostly sunny, with a high near 63. West wind 10 to 15 mph, with gusts as high as 20 mph.
Thursday Night
Showers. Low around 42. Northwest wind around 5 mph becoming east northeast in the evening. Chance of precipitation is 90%.
Friday
A 30 percent chance of showers before 1pm. Mostly cloudy, with a high near 52. North wind around 5 mph, with gusts as high as 10 mph.
Friday Night
Mostly clear, with a low around 35.
Saturday
Mostly sunny, with a high near 55.
Saturday Night
A chance of showers after 1am. Mostly cloudy, with a low around 46.
Sunday
A chance of showers. Mostly cloudy, with a high near 76.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 62.
Monday
A chance of showers. Mostly cloudy, with a high near 76.
Monday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 51.
Tuesday
Showers likely. Mostly cloudy, with a high near 64.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Grayslake IL
 42.35°N 88.02°W
5:06 am CDT Apr 8, 2026
8am CDT Apr 8, 2026-6pm CDT Apr 14, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database