Winthrop Harbor To Wilmette Harbor-
Wilmette Harbor To Northerly Island-
Northerly Island To Calumet Harbor-
Southeast winds 10 to 20 kt. Mostly clear. Waves 1 to 3 ft building to 2 to 4 ft late.
South winds 10 to 20 kt. Partly sunny. Waves 2 to 4 ft.
Southwest winds 5 to 10 kt becoming northwest after midnight. Slight chance of showers in the evening. Waves 1 ft or less.
North winds 5 to 10 kt becoming northeast in the afternoon. Mostly sunny. Waves 1 ft or less.