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.

A Few Clouds

62°F

17°C

Humidity 52%
Wind Speed SW 14 mph
Barometer 29.89 in (1011.8 mb)
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Last update 30 Mar 9:51 am CDT
Extended Forecast for

Chicago / Waukegan, Waukegan Regional Airport IL

  • Today

    Today: Mostly sunny, with a high near 72. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 72 °F

    Mostly Sunny

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 60. South wind around 15 mph, with gusts as high as 25 mph.

    Low: 60 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Tuesday

    Tuesday: A slight chance of showers before 1pm, then a chance of showers and thunderstorms between 1pm and 4pm, then showers and possibly a thunderstorm after 4pm. High near 72. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 72 °F

    Slight Chance
    Showers then
    Showers and
    Breezy

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm before 10pm, then a chance of showers and thunderstorms between 10pm and 1am, then a slight chance of showers after 1am. Low around 35. North wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.

    Low: 35 °F

    Showers then
    Chance
    Showers

  • Wednesday

    Wednesday: A 40 percent chance of showers after 1pm. Mostly cloudy, with a high near 40. Breezy, with a northeast wind 15 to 20 mph, with gusts as high as 25 mph.

    High: 40 °F

    Mostly Cloudy
    then Chance
    Showers and
    Breezy

  • Wednesday Night

    Wednesday Night: Showers. Low around 35. Chance of precipitation is 90%.

    Low: 35 °F

    Showers

  • Thursday

    Thursday: Showers. High near 51. Chance of precipitation is 90%.

    High: 51 °F

    Showers

  • Thursday Night

    Thursday Night: Showers likely, mainly before 1am. Mostly cloudy, with a low around 41.

    Low: 41 °F

    Showers
    Likely

  • Friday

    Friday: Mostly cloudy, with a high near 50.

    High: 50 °F

    Mostly Cloudy

Detailed Forecast

Today
Mostly sunny, with a high near 72. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Tonight
A 30 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 60. South wind around 15 mph, with gusts as high as 25 mph.
Tuesday
A slight chance of showers before 1pm, then a chance of showers and thunderstorms between 1pm and 4pm, then showers and possibly a thunderstorm after 4pm. High near 72. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday Night
Showers and possibly a thunderstorm before 10pm, then a chance of showers and thunderstorms between 10pm and 1am, then a slight chance of showers after 1am. Low around 35. North wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.
Wednesday
A 40 percent chance of showers after 1pm. Mostly cloudy, with a high near 40. Breezy, with a northeast wind 15 to 20 mph, with gusts as high as 25 mph.
Wednesday Night
Showers. Low around 35. Chance of precipitation is 90%.
Thursday
Showers. High near 51. Chance of precipitation is 90%.
Thursday Night
Showers likely, mainly before 1am. Mostly cloudy, with a low around 41.
Friday
Mostly cloudy, with a high near 50.
Friday Night
Showers likely, mainly after 1am. Mostly cloudy, with a low around 39.
Saturday
Showers likely. Mostly cloudy, with a high near 59.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 36.
Sunday
Partly sunny, with a high near 48.
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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:
10:15 am CDT Mar 30, 2026
Forecast Valid:
10am CDT Mar 30, 2026-6pm CDT Apr 5, 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