FZUS53 KGRB 231558 NSHGRB Nearshore Marine Forecast National Weather Service Green Bay WI 1058 AM CDT Sun Aug 23 2026 For waters within five nautical miles of shore on Lake Michigan LMZ521-522-232200- 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- Green Bay south of line from Oconto WI to Little Sturgeon Bay WI- 1058 AM CDT Sun Aug 23 2026 .THIS AFTERNOON...N wind 10 to 20 kts. Waves 2 to 4 ft. Partly cloudy. .TONIGHT...N wind 10 to 15 kts. Waves 2 to 4 ft subsiding to 1 to 3 ft after midnight. Clear. .MONDAY...NW wind 10 to 15 kts veering N 5 to 10 kts early in the afternoon. Waves 2 ft or less. Sunny. .MONDAY NIGHT...E wind 5 to 10 kts. Waves 2 ft or less. Partly cloudy. $$ LMZ541>543-232200- Rock Island Passage to Sturgeon Bay WI- Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI- 1058 AM CDT Sun Aug 23 2026 .THIS AFTERNOON...N wind 15 to 25 kts. Waves 1 to 3 ft. Mostly sunny during the morning then becoming partly cloudy. .TONIGHT...N wind 10 to 20 kts. Waves 1 to 3 ft. Clear. .MONDAY...NW wind 10 to 15 kts veering N 5 to 10 kts early in the afternoon. Waves 2 ft or less. Mostly sunny. .MONDAY NIGHT...SE wind 5 to 10 kts veering W after midnight. Waves 2 ft or less. Partly cloudy. $$ See Lake Michigan Open Lake Forecast for Tuesday through Thursday.