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

46°F

8°C

Humidity 40%
Wind Speed N 13 G 22 mph
Barometer 30.20 in (1023.2 mb)
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Wind Chill40°F (4°C)
Last update 6 Apr 5:51 pm CDT
Extended Forecast for

Chicago / Waukegan, Waukegan Regional Airport IL

  • Tonight

    Tonight: A slight chance of rain and snow showers between 7pm and 8pm, then a slight chance of snow showers after 8pm. Mostly cloudy, with a low around 26. North wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

    Low: 26 °F

    Slight Chance
    Rain/Snow
    then Slight
    Chance Snow
    Showers

  • Tuesday

    Tuesday: Mostly sunny, with a high near 34. North northeast wind around 10 mph becoming east in the afternoon.

    High: 34 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of snow showers after 1am, mixing with rain after 4am. Increasing clouds, with a temperature falling to near 29 by 10pm, then rising to around 35 during the remainder of the night. East southeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    Low: 29 °F⇑

    Mostly Cloudy
    then Slight
    Chance
    Rain/Snow

  • Wednesday

    Wednesday: A 10 percent chance of showers before 7am. Mostly cloudy, with a high near 60. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 60 °F

    Breezy.
    Slight Chance
    Showers then
    Partly Sunny

  • Wednesday Night

    Wednesday Night: Showers likely, mainly after 1am. Mostly cloudy, with a low around 50. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 60%.

    Low: 50 °F

    Breezy.
    Chance
    Showers then
    Showers
    Likely

  • Thursday

    Thursday: A 30 percent chance of showers, mainly after 1pm. Partly sunny, with a high near 66.

    High: 66 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 42. Chance of precipitation is 70%.

    Low: 42 °F

    Showers
    Likely

  • Friday

    Friday: A chance of showers. Mostly cloudy, with a high near 52.

    High: 52 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 38.

    Low: 38 °F

    Partly Cloudy

Detailed Forecast

Tonight
A slight chance of rain and snow showers between 7pm and 8pm, then a slight chance of snow showers after 8pm. Mostly cloudy, with a low around 26. North wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Tuesday
Mostly sunny, with a high near 34. North northeast wind around 10 mph becoming east in the afternoon.
Tuesday Night
A slight chance of snow showers after 1am, mixing with rain after 4am. Increasing clouds, with a temperature falling to near 29 by 10pm, then rising to around 35 during the remainder of the night. East southeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Wednesday
A 10 percent chance of showers before 7am. Mostly cloudy, with a high near 60. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph.
Wednesday Night
Showers likely, mainly after 1am. Mostly cloudy, with a low around 50. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 60%.
Thursday
A 30 percent chance of showers, mainly after 1pm. Partly sunny, with a high near 66.
Thursday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 42. Chance of precipitation is 70%.
Friday
A chance of showers. Mostly cloudy, with a high near 52.
Friday Night
Partly cloudy, with a low around 38.
Saturday
Mostly sunny, with a high near 52.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 44.
Sunday
A chance of showers. Mostly cloudy, with a high near 73.
Sunday Night
Showers likely. Mostly cloudy, with a low around 58.
Monday
A chance of showers. Mostly cloudy, with a high near 75.
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ABOUT THIS FORECAST

 
Point Forecast:
Chicago / Waukegan, Waukegan Regional Airport IL
 42.41°N 87.87°W
Last Update:
4:01 pm CDT Apr 6, 2026
Forecast Valid:
6pm CDT Apr 6, 2026-6pm CDT Apr 13, 2026
 
Forecast Discussion
 
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Additional Resources

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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