Coastal Waters Forecast for Green Bay south of line from Cedar River to Rock Island Passage and north of a line from Oconto WI to Little Sturgeon Bay WI (LMZ521) (Text-Only)
NWS Forecast for: Green Bay south of line from Cedar River to Rock Island Passage and north of a line from Oconto WI to Little Sturgeon Bay WI (LMZ521)
Issued by: National Weather Service Green Bay, WI
Last Update: 334 AM CDT Fri Oct 16 2026
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Early This Morning: NW wind 15 to 25 kts. Waves 3 to 5 ft. Rain showers.

Today: N wind to 30 kts increasing to gales to 35 kts mid-day, then decreasing to to 30 kts early in the afternoon. Waves 4 to 7 ft building to 5 to 8 ft in the afternoon. Rain showers in the morning.

Tonight: NW wind 15 to 25 kts decreasing to 5 to 10 kts after midnight. Waves 4 to 7 ft. Mostly clear.

Saturday: W wind 10 to 15 kts backing SW 15 to 25 kts in the late morning and afternoon. Waves 2 to 4 ft building to 3 to 5 ft in the afternoon. Sunny. A small craft advisory may be needed.

Saturday Night: SW wind to 30 kts. Waves 4 to 7 ft. Clear.







Zone Forecast: Green Bay south of line from Cedar River to Rock Island Passage and north of a line from Oconto WI to Little Sturgeon Bay WI (LMZ521)

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