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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.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Grayslake IL
 42.35°N 88.02°W
Last Update:
5:06 am CDT Apr 8, 2026
Forecast Valid:
8am CDT Apr 8, 2026-6pm CDT Apr 14, 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