National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Thunderstorms and Heavy Rain Across the Southern and Eastern US; Heat and Fire Weather Concerns in the West

Showers and thunderstorms are expected across the southern and eastern US this week, with heavy rain and localized flooding, particularly near the Gulf Coast. Monsoonal moisture will bring rain and potential flooding to parts of the Southwest. Heat and fire weather threats will continue to impact the West. Read More >

Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Fair

78°F

26°C

Humidity 64%
Wind Speed W 6 mph
Barometer 29.87 in (1010.0 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 30 Jun 9:51 pm CDT
Extended Forecast for

Waukegan IL

  • Tonight

    Tonight: Mostly cloudy early, then gradual clearing, with a low around 68. West northwest wind around 10 mph.

    Low: 68 °F

    Gradual
    Clearing

  • Tuesday

    Tuesday: Sunny, with a high near 81. Northwest wind around 10 mph, with gusts as high as 15 mph.

    High: 81 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 66. East wind around 5 mph becoming west after midnight.

    Low: 66 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 87. West wind 5 to 10 mph.

    High: 87 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 68. West wind around 5 mph, with gusts as high as 10 mph.

    Low: 68 °F

    Mostly Clear

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 86.

    High: 86 °F

    Sunny then
    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 69.

    Low: 69 °F

    Partly Cloudy

  • Independence Day

    Independence Day: Mostly sunny, with a high near 91.

    High: 91 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 74.

    Low: 74 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy early, then gradual clearing, with a low around 68. West northwest wind around 10 mph.
Tuesday
Sunny, with a high near 81. Northwest wind around 10 mph, with gusts as high as 15 mph.
Tuesday Night
Mostly clear, with a low around 66. East wind around 5 mph becoming west after midnight.
Wednesday
Sunny, with a high near 87. West wind 5 to 10 mph.
Wednesday Night
Mostly clear, with a low around 68. West wind around 5 mph, with gusts as high as 10 mph.
Thursday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 86.
Thursday Night
Partly cloudy, with a low around 69.
Independence Day
Mostly sunny, with a high near 91.
Friday Night
Partly cloudy, with a low around 74.
Saturday
A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 92.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 72.
Sunday
A chance of showers. Partly sunny, with a high near 84.
Sunday Night
A chance of showers. Partly cloudy, with a low around 66.
Monday
A chance of showers. Mostly sunny, with a high near 79.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Waukegan IL
 42.37°N 87.88°W
Last Update:
8:57 pm CDT Jun 30, 2025
Forecast Valid:
10pm CDT Jun 30, 2025-6pm CDT Jul 7, 2025
 
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