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 3:08 am CST on March 3, 2015

Small Craft Advisory in effect from 6 am CST this morning through Wednesday afternoon


South winds 15 to 25 kt early increasing to 30 kt this morning and becoming southwest this afternoon. Snow with sleet... rain and freezing rain likely in the morning...then chance of light rain or drizzle in the afternoon. Waves 3 to 6 ft occasionally to 8 ft.


West winds 20 to 25 kt becoming northwest. Mostly cloudy. Waves subsiding to 2 to 4 ft after midnight.


Northwest winds 20 to 25 kt. Mostly sunny. Waves 2 to 4 ft.

Wednesday Night

Northwest winds 15 to 20 kt. Partly cloudy. Waves 2 to 4 ft subsiding to 1 to 3 ft. Wave forecast is for ice free areas