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

58°F

14°C

Humidity 58%
Wind Speed W 13 mph
Barometer 29.74 in (1007.3 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 20 Mar 8:51 am CDT
Extended Forecast for

Chicago / Waukegan, Waukegan Regional Airport IL

  • Today

    Today: Mostly cloudy, with a temperature rising to near 61 by noon, then falling to around 48 during the remainder of the day. West southwest wind 10 to 15 mph becoming north in the afternoon.

    High: 61 °F⇓

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 36. North northeast wind 5 to 10 mph becoming east after midnight.

    Low: 36 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 64. East wind 5 to 15 mph becoming south in the afternoon. Winds could gust as high as 20 mph.

    High: 64 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 43. Southwest wind around 10 mph, with gusts as high as 15 mph.

    Low: 43 °F

    Partly Cloudy

  • Sunday

    Sunday: A 30 percent chance of showers, mainly before 1pm. Mostly cloudy, with a high near 46. North wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 46 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 31.

    Low: 31 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 41.

    High: 41 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 31.

    Low: 31 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 52.

    High: 52 °F

    Mostly Cloudy

Detailed Forecast

Today
Mostly cloudy, with a temperature rising to near 61 by noon, then falling to around 48 during the remainder of the day. West southwest wind 10 to 15 mph becoming north in the afternoon.
Tonight
Mostly cloudy, with a low around 36. North northeast wind 5 to 10 mph becoming east after midnight.
Saturday
Partly sunny, with a high near 64. East wind 5 to 15 mph becoming south in the afternoon. Winds could gust as high as 20 mph.
Saturday Night
Partly cloudy, with a low around 43. Southwest wind around 10 mph, with gusts as high as 15 mph.
Sunday
A 30 percent chance of showers, mainly before 1pm. Mostly cloudy, with a high near 46. North wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday Night
Mostly cloudy, with a low around 31.
Monday
Mostly sunny, with a high near 41.
Monday Night
Partly cloudy, with a low around 31.
Tuesday
Mostly cloudy, with a high near 52.
Tuesday Night
Mostly cloudy, with a low around 34.
Wednesday
Partly sunny, with a high near 48.
Wednesday Night
Partly cloudy, with a low around 39.
Thursday
Partly sunny, with a high near 56.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Chicago / Waukegan, Waukegan Regional Airport IL
 42.41°N 87.87°W
Last Update:
9:21 am CDT Mar 20, 2026
Forecast Valid:
9am CDT Mar 20, 2026-6pm CDT Mar 26, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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