National Weather Service Marine Forecast FZUS53 KGRB

FZUS53 KGRB 310656
NSHGRB

Nearshore Marine Forecast
National Weather Service Green Bay WI
156 AM CDT Fri Jul 31 2026

For waters within five nautical miles of shore on Lake Michigan

LMZ521-522-311000
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
156 AM CDT Fri Jul 31 2026

REST OF THE NIGHT
SW wind 5 to 10 kts. Waves 2 ft or less. Patchy smoke.

FRIDAY
SW wind 5 to 10 kts. Waves 2 ft or less. Patchy smoke. a chance of showers in the afternoon.

FRIDAY NIGHT
N wind 5 to 10 kts veering NE in the late evening and overnight. Waves 2 ft or less. Showers likely in the evening, then a chance of showers after midnight.

SATURDAY
NE wind 10 to 15 kts. Waves 2 ft or less. A chance of showers.

LMZ541>543-311000
Rock Island Passage to Sturgeon Bay WI
Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI
156 AM CDT Fri Jul 31 2026

REST OF THE NIGHT
SW wind 5 to 10 kts. Waves 2 ft or less. Patchy smoke.

FRIDAY
SW wind 5 to 10 kts backing S in the late morning and afternoon. Waves 2 ft or less. Patchy smoke in the morning. a slight chance of showers in the afternoon.

FRIDAY NIGHT
NW wind 5 to 10 kts veering NE 10 to 15 kts in the late evening and overnight. Waves 2 to 4 ft. A chance of showers in the evening, then showers likely after midnight.

SATURDAY
NE wind 10 to 15 kts. Waves 2 to 4 ft. A chance of showers. patchy smoke in the afternoon.

See Lake Michigan Open Lake Forecast for Sunday through Tuesday.