Winthrop Harbor To Wilmette Harbor-
Wilmette Harbor To Northerly Island-
Northerly Island To Calumet Harbor-
Southwest winds 10 to 20 kt becoming northwest 15 to 20 kt in the late evening and overnight. Chance of showers in the evening. Waves 1 ft or less building to 1 to 3 ft.
Northwest winds 15 to 25 kt becoming 15 to 20 kt in the afternoon. Cloudy in the morning then becoming mostly sunny. Waves 2 to 4 ft.
West winds 10 to 20 kt becoming northwest 15 to 20 kt after midnight. Partly cloudy. Waves 1 to 3 ft building to 2 to 4 ft after midnight.
North winds 15 to 25 kt. Mostly sunny. Waves 4 to 6 ft occasionally to 8 ft building to 4 to 7 ft occasionally to 9 ft in the afternoon. A Small Craft Advisory will likely be needed.