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.

Overcast

36°F

2°C

Humidity 89%
Wind Speed Calm
Barometer 30.00 in (1016.8 mb)
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Last update 27 Dec 4:51 am CST
Extended Forecast for

Waukegan IL

  • Today

    Today: Cloudy, with a high near 41. South southeast wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 41 °F

    Cloudy

  • Tonight

    Tonight: Showers likely, mainly after 3am. Patchy fog. Otherwise, cloudy, with a temperature rising to around 44 by 4am. South southeast wind 5 to 10 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 40 °F⇑

    Showers
    Likely and
    Patchy Fog

  • Sunday

    Sunday: Showers. Patchy fog before noon. High near 55. South southeast wind 5 to 15 mph becoming west southwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.

    High: 55 °F

    Showers and
    Patchy Fog

  • Sunday Night

    Sunday Night: Rain showers likely before 9pm, then rain and snow showers likely between 9pm and midnight, then a chance of snow showers after midnight. Cloudy, with a low around 20. Windy, with a west wind 15 to 20 mph increasing to 25 to 30 mph after midnight. Winds could gust as high as 45 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    Low: 20 °F

    Rain/Snow
    Likely and
    Windy

  • Monday

    Monday: Snow showers likely, mainly before noon. Mostly cloudy, with a high near 26. Windy, with a west northwest wind 25 to 30 mph, with gusts as high as 45 mph. Chance of precipitation is 60%.

    High: 26 °F

    Windy. Snow
    Showers
    Likely then
    Slight Chance
    Snow Showers

  • Monday Night

    Monday Night: Partly cloudy, with a low around 14. Blustery.

    Low: 14 °F

    Mostly Cloudy
    and Blustery
    then Partly
    Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 28.

    High: 28 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 21.

    Low: 21 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 29.

    High: 29 °F

    Mostly Cloudy

Detailed Forecast

Today
Cloudy, with a high near 41. South southeast wind 5 to 10 mph, with gusts as high as 15 mph.
Tonight
Showers likely, mainly after 3am. Patchy fog. Otherwise, cloudy, with a temperature rising to around 44 by 4am. South southeast wind 5 to 10 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Sunday
Showers. Patchy fog before noon. High near 55. South southeast wind 5 to 15 mph becoming west southwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.
Sunday Night
Rain showers likely before 9pm, then rain and snow showers likely between 9pm and midnight, then a chance of snow showers after midnight. Cloudy, with a low around 20. Windy, with a west wind 15 to 20 mph increasing to 25 to 30 mph after midnight. Winds could gust as high as 45 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Monday
Snow showers likely, mainly before noon. Mostly cloudy, with a high near 26. Windy, with a west northwest wind 25 to 30 mph, with gusts as high as 45 mph. Chance of precipitation is 60%.
Monday Night
Partly cloudy, with a low around 14. Blustery.
Tuesday
Partly sunny, with a high near 28.
Tuesday Night
Mostly cloudy, with a low around 21.
Wednesday
Mostly cloudy, with a high near 29.
Wednesday Night
A chance of snow before midnight. Mostly cloudy, with a low around 10.
New Year's Day
Mostly sunny, with a high near 17.
Thursday Night
Mostly clear, with a low around 6.
Friday
Sunny, with a high near 20.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Waukegan IL
 42.37°N 87.85°W
Last Update:
4:51 am CST Dec 27, 2025
Forecast Valid:
4am CST Dec 27, 2025-6pm CST Jan 2, 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