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 9:22 PM CST on January 31, 2015

Gale Warning in effect from Sunday afternoon through late Sunday night

Rest Of Tonight

Northeast winds 10 to 20 kt increasing to 15 to 25 kt. Snow. Waves 2 to 4 ft building to 3 to 5 ft occasionally to 7 ft.


Northeast winds to 30 kt increasing to gales to 40 kt in the afternoon. Snow. Freezing spray in the afternoon. Waves 6 to 10 ft occasionally to 13 ft building to 10 to 14 ft occasionally to 18 ft in the afternoon.

Sunday Night

North gales to 40 kt diminishing to 30 kt after midnight. Freezing spray. Snow in the evening...then snow showers likely after midnight. Waves 10 to 14 ft occasionally to 18 ft subsiding to 8 to 12 ft occasionally to 15 ft overnight.


North winds 15 to 25 kt becoming west 10 to 15 kt in the afternoon. Chance of snow showers in the morning. Waves 7 to 10 ft occasionally to 13 ft subsiding to 5 to 8 ft occasionally to 10 ft in the afternoon.