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 3:28 am CDT on May 29, 2015


South winds 15 to 20 kt. Patchy fog this morning. Chance of showers and thunderstorms. Waves 1 to 3 ft.


Southwest winds 10 to 15 kt becoming west toward morning. Showers likely and a chance of thunderstorms. Waves 1 to 2 ft.


North winds increasing to 30 kt in the morning. Occasional gales possible in the late morning and afternoon. Showers likely. Waves 2 to 4 ft building to 8 to 11 ft occasionally to 14 ft. A Small Craft Advisory will likely be needed.

Saturday Night

North winds to 30 kt becoming northeast 15 to 25 kt overnight. Mostly cloudy in the evening then becoming partly cloudy. Waves 8 to 11 ft occasionally to 14 ft subsiding to 6 to 9 ft occasionally to 11 ft after midnight.