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Hazardous Weather Conditions

Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Thunderstorm Rain Fog/Mist

61°F

16°C

Humidity 97%
Wind Speed N 8 mph
Barometer 29.63 in (1002.9 mb)
Dewpoint 60°F (16°C)
Visibility 5.00 mi
Last update 17 Apr 9:51 pm CDT
Extended Forecast for

Chicago / Waukegan, Waukegan Regional Airport IL

Flood Watch April 17, 10:42pm until April 18, 05:00am
Flash Flood Warning April 17, 10:42pm until April 18, 02:00am
Click here for hazard details and duration
Flood Watch
Flash Flood Warning
  •  
    Flood Watch April 17, 10:42pm until April 18, 05:00am
    Flash Flood Warning April 17, 10:42pm until April 18, 02:00am

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Tonight

    Low: 42 °F

    T-storms then
    Showers and
    Breezy

  • Saturday

    Saturday: Cloudy, then gradually becoming mostly sunny, with a high near 51. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 51 °F

    Decreasing
    Clouds and
    Breezy

  • Saturday Night

    Saturday Night: Areas of frost after 5am. Otherwise, mostly clear, with a low around 33. West wind 5 to 15 mph, with gusts as high as 25 mph.

    Low: 33 °F

    Partly Cloudy
    then Areas
    Frost

  • Sunday

    Sunday: Areas of frost before 7am. Otherwise, mostly sunny, with a high near 48. West southwest wind 10 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph.

    High: 48 °F

    Areas Frost
    then Partly
    Sunny

  • Sunday Night

    Sunday Night: Widespread frost, mainly after 4am. Otherwise, mostly clear, with a low around 32. North northwest wind 5 to 10 mph becoming northeast after midnight. Winds could gust as high as 15 mph.

    Low: 32 °F

    Frost

  • Monday

    Monday: Widespread frost, mainly before 7am. Otherwise, sunny, with a high near 49.

    High: 49 °F

    Frost then
    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 42.

    Low: 42 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 68.

    High: 68 °F

    Mostly Sunny

Detailed Forecast

Tonight
Showers and thunderstorms before 4am, then a slight chance of showers. Low around 42. Breezy, with a south wind 10 to 20 mph becoming west northwest after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Saturday
Cloudy, then gradually becoming mostly sunny, with a high near 51. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.
Saturday Night
Areas of frost after 5am. Otherwise, mostly clear, with a low around 33. West wind 5 to 15 mph, with gusts as high as 25 mph.
Sunday
Areas of frost before 7am. Otherwise, mostly sunny, with a high near 48. West southwest wind 10 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph.
Sunday Night
Widespread frost, mainly after 4am. Otherwise, mostly clear, with a low around 32. North northwest wind 5 to 10 mph becoming northeast after midnight. Winds could gust as high as 15 mph.
Monday
Widespread frost, mainly before 7am. Otherwise, sunny, with a high near 49.
Monday Night
Mostly cloudy, with a low around 42.
Tuesday
Mostly sunny, with a high near 68.
Tuesday Night
Partly cloudy, with a low around 44.
Wednesday
Sunny, with a high near 57.
Wednesday Night
Partly cloudy, with a low around 48.
Thursday
Mostly sunny, with a high near 71.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 55.
Friday
A chance of showers. Mostly cloudy, with a high near 69.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Chicago / Waukegan, Waukegan Regional Airport IL
 42.41°N 87.87°W
Last Update:
10:31 pm CDT Apr 17, 2026
Forecast Valid:
10pm CDT Apr 17, 2026-6pm CDT Apr 24, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation