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 3:15 am CST on November 24, 2017

Small Craft Advisory in effect through Saturday afternoon


Southwest winds 20 to 25 kt increasing to 30 kt. Occasional gales to 35 kt are possible in the afternoon. Mostly sunny. Waves 2 to 4 ft building to 3 to 5 ft.


West winds 20 to 25 kt becoming northwest after midnight. Slight chance of showers in the evening. Waves 3 to 5 ft subsiding to 2 to 4 ft after midnight.


Northwest winds 20 to 25 kt. Sunny. Waves 2 to 4 ft.

Saturday Night

Northwest winds 10 to 20 kt becoming west 10 to 15 kt after midnight. Mostly clear. Waves 2 to 4 ft subsiding to 1 to 3 ft after midnight.


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