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.

Fair

34°F

1°C

Humidity 73%
Wind Speed N 5 mph
Barometer 30.30 in (1026.8 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Wind Chill29°F (-2°C)
Last update 24 Dec 1:51 am CST
Extended Forecast for

Chicago / Waukegan, Waukegan Regional Airport IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 31. North wind around 5 mph, with gusts as high as 10 mph.

    Low: 31 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Patchy drizzle after 5pm. Mostly cloudy, with a high near 41. East wind 5 to 10 mph becoming south southeast in the afternoon. Winds could gust as high as 15 mph.

    High: 41 °F

    Mostly Cloudy
    then Patchy
    Drizzle

  • Wednesday Night

    Wednesday Night: Drizzle, mainly before 10pm. Patchy fog after midnight. Otherwise, cloudy, with a low around 36. Light and variable wind becoming north northeast 5 to 10 mph after midnight. Winds could gust as high as 15 mph.

    Low: 36 °F

    Drizzle then
    Areas Drizzle
    and Patchy
    Fog

  • Christmas Day

    Christmas Day: Cloudy, with a high near 39. Northeast wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 39 °F

    Cloudy

  • Thursday Night

    Thursday Night: Rain likely after midnight. Cloudy, with a low around 36. Southeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.

    Low: 36 °F

    Cloudy then
    Rain Likely

  • Friday

    Friday: Rain likely before noon. Cloudy, with a high near 43. Chance of precipitation is 60%.

    High: 43 °F

    Rain Likely
    then Cloudy

  • Friday Night

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

    Low: 35 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 43.

    High: 43 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Cloudy, with a low around 34.

    Low: 34 °F

    Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 31. North wind around 5 mph, with gusts as high as 10 mph.
Wednesday
Patchy drizzle after 5pm. Mostly cloudy, with a high near 41. East wind 5 to 10 mph becoming south southeast in the afternoon. Winds could gust as high as 15 mph.
Wednesday Night
Drizzle, mainly before 10pm. Patchy fog after midnight. Otherwise, cloudy, with a low around 36. Light and variable wind becoming north northeast 5 to 10 mph after midnight. Winds could gust as high as 15 mph.
Christmas Day
Cloudy, with a high near 39. Northeast wind 10 to 15 mph, with gusts as high as 20 mph.
Thursday Night
Rain likely after midnight. Cloudy, with a low around 36. Southeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Friday
Rain likely before noon. Cloudy, with a high near 43. Chance of precipitation is 60%.
Friday Night
Mostly cloudy, with a low around 35.
Saturday
Mostly cloudy, with a high near 43.
Saturday Night
Cloudy, with a low around 34.
Sunday
Partly sunny, with a high near 39. Breezy.
Sunday Night
Partly cloudy, with a low around 11. Blustery.
Monday
Mostly sunny, with a high near 20. Blustery.
Monday Night
Partly cloudy, with a low around 12.
Tuesday
Partly sunny, with a high near 26.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Chicago / Waukegan, Waukegan Regional Airport IL
 42.41°N 87.87°W
Last Update:
2:06 am CST Dec 24, 2025
Forecast Valid:
2am CST Dec 24, 2025-6pm CST Dec 30, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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