Chicago Weather

Marine Data

Below you'll find the latest marine forecast for our area. This forecast updates daily.

Winthrop Harbor To Wilmette Harbor-

Wilmette Harbor To Northerly Island-

Northerly Island To Calumet Harbor-

Forecast as of 2:46 PM CDT on July 23, 2017


Northwest winds 10 to 15 kt before sunset shifting north this evening and increasing to 10 to 20 kt late. Scattered showers and thunderstorms before sunset. Waves 1 ft or less building to 2 to 4 ft.


Northeast winds 15 to 20 kt. Partly sunny. Waves 3 to 5 ft. A Small Craft Advisory may be needed.

Monday Night

Northeast winds 10 to 15 kt becoming east after midnight. Mostly clear. Waves 3 to 5 ft subsiding to 2 to 4 ft after midnight.


Southeast winds 10 to 15 kt. Sunny. Waves 1 to 3 ft.


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