FZUS53 KGRB 220136
NSHGRB

Nearshore Marine Forecast
National Weather Service Green Bay WI
836 PM CDT Fri Aug 21 2026

For waters within five nautical miles of shore on Lake Michigan

LMZ521-522-220400-
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-
836 PM CDT Fri Aug 21 2026

.TONIGHT...W wind 5 to 10 kts veering NW in the late evening and
overnight. Waves 2 ft or less. Rain showers likely and a chance
of thunderstorms in the evening. 
.SATURDAY...NW wind 10 to 15 kts. Waves 1 to 3 ft. A chance of
showers. A chance of thunderstorms in the afternoon. 
.SATURDAY NIGHT...NW wind 10 to 15 kts. Waves 1 to 3 ft. Mostly
clear. 
.SUNDAY...N wind 10 to 15 kts. Waves 1 to 3 ft. Mostly sunny.  

$$

LMZ541>543-220400-
Rock Island Passage to Sturgeon Bay WI-
Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI-
836 PM CDT Fri Aug 21 2026

.TONIGHT...SW wind 5 to 10 kts veering NW 10 to 15 kts in the
late evening and overnight. Waves 2 to 4 ft subsiding to 1 to
3 ft after midnight. A chance of showers and thunderstorms in the
evening. 
.SATURDAY...N wind 10 to 15 kts. Waves 1 to 3 ft. A chance of
showers and thunderstorms in the afternoon. 
.SATURDAY NIGHT...N wind 10 to 20 kts. Waves 1 to 3 ft. Mostly
clear. 
.SUNDAY...N wind 10 to 15 kts. Waves 1 to 3 ft. Mostly sunny.  

$$

See Lake Michigan Open Lake Forecast for Monday through Wednesday.