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.

Fair

34°F

1°C

Humidity 85%
Wind Speed Calm
Barometer 30.23 in (1024.6 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Last update 19 Apr 9:51 pm CDT
Extended Forecast for

Gurnee IL

Flood Warning until further notice
Freeze Warning April 20, 12:00am until April 20, 09:00am
Click here for hazard details and duration
Flood Warning until further notice
Freeze Warning
  •  
    Flood Warning until further notice

    NOW until further notice

    Flood Warning

  • Tonight

    Low: 28 °F

    Frost

  • Monday

    Monday: Widespread frost before 9am. Otherwise, sunny, with a high near 48. Light east wind becoming southeast 5 to 10 mph in the morning.

    High: 48 °F

    Frost then
    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 41. South wind around 10 mph, with gusts as high as 20 mph.

    Low: 41 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 71. Southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 71 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 46. West southwest wind around 5 mph becoming north after midnight. Winds could gust as high as 10 mph.

    Low: 46 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 66.

    High: 66 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 50.

    Low: 50 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 77. Breezy.

    High: 77 °F

    Mostly Sunny
    then Mostly
    Sunny and
    Breezy

Detailed Forecast

Tonight
Widespread frost, mainly after midnight. Otherwise, partly cloudy, with a low around 28. Northeast wind around 5 mph becoming calm after midnight.
Monday
Widespread frost before 9am. Otherwise, sunny, with a high near 48. Light east wind becoming southeast 5 to 10 mph in the morning.
Monday Night
Mostly cloudy, with a low around 41. South wind around 10 mph, with gusts as high as 20 mph.
Tuesday
Mostly sunny, with a high near 71. Southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday Night
Partly cloudy, with a low around 46. West southwest wind around 5 mph becoming north after midnight. Winds could gust as high as 10 mph.
Wednesday
Sunny, with a high near 66.
Wednesday Night
Partly cloudy, with a low around 50.
Thursday
Mostly sunny, with a high near 77. Breezy.
Thursday Night
Showers likely, mainly after 1am. Mostly cloudy, with a low around 59.
Friday
A chance of showers. Mostly cloudy, with a high near 70.
Friday Night
A chance of showers. Mostly cloudy, with a low around 45.
Saturday
Partly sunny, with a high near 61.
Saturday Night
Mostly cloudy, with a low around 42.
Sunday
Partly sunny, with a high near 59.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Gurnee IL
 42.37°N 87.93°W
Last Update:
9:21 pm CDT Apr 19, 2026
Forecast Valid:
10pm CDT Apr 19, 2026-6pm CDT Apr 26, 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