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

Significant Coastal Impacts to the Eastern Seaboard; Tropical Storm Nolo to Impact Hawaii

A Nor'easter will bring significant coastal impacts to the Mid-Atlantic and New England through the weekend. Moderate to major coastal flooding, heavy rain, strong winds and high surf expected. Tropical Storm Nolo will continue to strengthen as it moves north toward the Big Island of Hawaii. Heavy rainfall may bring life-threatening, catastrophic flooding and mudslides through the weekend. Read More >

Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Overcast

62°F

17°C

Humidity 75%
Wind Speed E 8 mph
Barometer 30.29 in (1025.3 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 25 Sep 2:51 pm CDT
Extended Forecast for

Great Lakes IL

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 64. East wind around 5 mph.

    High: 64 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 55. East northeast wind 5 to 10 mph.

    Low: 55 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 64. East wind around 5 mph, with gusts as high as 10 mph.

    High: 64 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 53. East wind around 5 mph becoming calm after midnight.

    Low: 53 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 66. Calm wind becoming northeast around 5 mph in the afternoon.

    High: 66 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 54.

    Low: 54 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 68.

    High: 68 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 69.

    High: 69 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 64. East wind around 5 mph.
Tonight
Mostly clear, with a low around 55. East northeast wind 5 to 10 mph.
Saturday
Mostly sunny, with a high near 64. East wind around 5 mph, with gusts as high as 10 mph.
Saturday Night
Mostly cloudy, with a low around 53. East wind around 5 mph becoming calm after midnight.
Sunday
Mostly sunny, with a high near 66. Calm wind becoming northeast around 5 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 54.
Monday
Sunny, with a high near 68.
Monday Night
Mostly clear, with a low around 56.
Tuesday
Mostly sunny, with a high near 69.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 61.
Wednesday
Showers likely. Cloudy, with a high near 68.
Wednesday Night
Showers likely. Cloudy, with a low around 61.
Thursday
A chance of showers. Mostly cloudy, with a high near 68.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Great Lakes IL
 42.3°N 87.85°W
Last Update:
1:21 pm CDT Sep 25, 2026
Forecast Valid:
3pm CDT Sep 25, 2026-6pm CDT Oct 1, 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