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.

Mostly Cloudy

63°F

17°C

Humidity 87%
Wind Speed Vrbl 7 mph
Barometer 29.75 in (1006.7 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 31 Mar 12:51 pm CDT
Extended Forecast for

Chicago / Waukegan, Waukegan Regional Airport IL

  • This Afternoon

    This Afternoon: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 5pm. High near 73. Southwest wind around 15 mph becoming north northwest. Winds could gust as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 73 °F

    T-storms

  • Tonight

    Tonight: Showers and thunderstorms likely before 9pm, then a slight chance of showers between 9pm and 10pm. Cloudy, with a low around 34. North northeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 34 °F

    T-storms
    Likely then
    Cloudy

  • Wednesday

    Wednesday: A 20 percent chance of showers after 4pm. Mostly cloudy, with a high near 43. Northeast wind around 15 mph, with gusts as high as 25 mph.

    High: 43 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 7pm. Low around 37. Breezy, with an east wind 15 to 20 mph, with gusts as high as 25 mph. Chance of precipitation is 90%.

    Low: 37 °F

    Showers and
    Breezy

  • Thursday

    Thursday: Showers and possibly a thunderstorm. High near 70. Breezy, with an east southeast wind 15 to 25 mph becoming south in the afternoon. Winds could gust as high as 35 mph. Chance of precipitation is 100%.

    High: 70 °F

    Breezy.
    Showers
    Likely then
    Showers

  • Thursday Night

    Thursday Night: A 50 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 44. Breezy.

    Low: 44 °F

    Chance
    Showers and
    Breezy

  • Friday

    Friday: A 20 percent chance of showers after 1pm. Partly sunny, with a high near 54.

    High: 54 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm. Mostly cloudy, with a low around 43.

    Low: 43 °F

    Showers

  • Saturday

    Saturday: Showers likely. Mostly cloudy, with a high near 62.

    High: 62 °F

    Showers
    Likely

Detailed Forecast

This Afternoon
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 5pm. High near 73. Southwest wind around 15 mph becoming north northwest. Winds could gust as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and thunderstorms likely before 9pm, then a slight chance of showers between 9pm and 10pm. Cloudy, with a low around 34. North northeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
A 20 percent chance of showers after 4pm. Mostly cloudy, with a high near 43. Northeast wind around 15 mph, with gusts as high as 25 mph.
Wednesday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 7pm. Low around 37. Breezy, with an east wind 15 to 20 mph, with gusts as high as 25 mph. Chance of precipitation is 90%.
Thursday
Showers and possibly a thunderstorm. High near 70. Breezy, with an east southeast wind 15 to 25 mph becoming south in the afternoon. Winds could gust as high as 35 mph. Chance of precipitation is 100%.
Thursday Night
A 50 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 44. Breezy.
Friday
A 20 percent chance of showers after 1pm. Partly sunny, with a high near 54.
Friday Night
Showers and possibly a thunderstorm. Mostly cloudy, with a low around 43.
Saturday
Showers likely. Mostly cloudy, with a high near 62.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 35. Breezy.
Sunday
Partly sunny, with a high near 45.
Sunday Night
Partly cloudy, with a low around 31.
Monday
Mostly sunny, with a high near 48.
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ABOUT THIS FORECAST

 
Point Forecast:
Chicago / Waukegan, Waukegan Regional Airport IL
 42.41°N 87.87°W
Last Update:
12:56 pm CDT Mar 31, 2026
Forecast Valid:
1pm CDT Mar 31, 2026-6pm CDT Apr 6, 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