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

70°F

21°C

Humidity 68%
Wind Speed SW 10 mph
Barometer 30.06 in (1017.0 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 6 Oct 7:51 am CDT
Extended Forecast for

Chicago / Waukegan, Waukegan Regional Airport IL

  • Today

    Today: A slight chance of showers before 3pm, then a chance of showers and thunderstorms between 3pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. Increasing clouds, with a high near 80. Southwest wind around 10 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 80 °F

    Mostly Sunny
    then Showers
    Likely

  • Tonight

    Tonight: Showers and thunderstorms likely before 11pm, then showers likely and possibly a thunderstorm between 11pm and 3am, then showers likely after 3am. Cloudy, with a low around 57. North wind around 10 mph, with gusts as high as 15 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 57 °F

    Showers
    Likely

  • Tuesday

    Tuesday: A 30 percent chance of showers before 10am. Cloudy through mid morning, then gradual clearing, with a high near 66. North wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 66 °F

    Chance
    Showers then
    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 50. North northwest wind 5 to 10 mph.

    Low: 50 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 62. Northeast wind 5 to 10 mph.

    High: 62 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 48.

    Low: 48 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 62.

    High: 62 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 49.

    Low: 49 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 67.

    High: 67 °F

    Mostly Sunny

Detailed Forecast

Today
A slight chance of showers before 3pm, then a chance of showers and thunderstorms between 3pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. Increasing clouds, with a high near 80. Southwest wind around 10 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and thunderstorms likely before 11pm, then showers likely and possibly a thunderstorm between 11pm and 3am, then showers likely after 3am. Cloudy, with a low around 57. North wind around 10 mph, with gusts as high as 15 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday
A 30 percent chance of showers before 10am. Cloudy through mid morning, then gradual clearing, with a high near 66. North wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly clear, with a low around 50. North northwest wind 5 to 10 mph.
Wednesday
Sunny, with a high near 62. Northeast wind 5 to 10 mph.
Wednesday Night
Mostly clear, with a low around 48.
Thursday
Sunny, with a high near 62.
Thursday Night
Mostly clear, with a low around 49.
Friday
Mostly sunny, with a high near 67.
Friday Night
Partly cloudy, with a low around 52.
Saturday
Sunny, with a high near 68.
Saturday Night
Mostly clear, with a low around 54.
Sunday
Sunny, with a high near 71.
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ABOUT THIS FORECAST

 
Point Forecast:
Chicago / Waukegan, Waukegan Regional Airport IL
 42.41°N 87.84°W
Last Update:
6:26 am CDT Oct 6, 2025
Forecast Valid:
8am CDT Oct 6, 2025-6pm CDT Oct 12, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation