Winthrop Harbor To Wilmette Harbor-
Wilmette Harbor To Northerly Island-
Northerly Island To Calumet Harbor-
East winds 15 to 20 kt becoming northeast in the afternoon. Showers and slight chance of thunderstorms in the afternoon. Waves 3 to 5 ft occasionally to 7 ft.
North winds 15 to 20 kt becoming west 10 to 15 kt after midnight. Showers in the evening...then showers likely after midnight. Waves 3 to 5 ft occasionally to 7 ft subsiding to 1 to 3 ft after midnight.
West winds 10 to 20 kt increasing to 20 to 25 kt in the afternoon. Showers likely. Waves 1 to 3 ft building to 2 to 4 ft in the afternoon. A Small Craft Advisory will likely be needed.
West winds 15 to 20 kt. Partly cloudy. Waves 1 to 3 ft.