Station List

National Weather Service Marine Forecast FZUS63 KMKX

FZUS63 KMKX 052000
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
300 PM CDT Sun Jul 5 2026

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON Lake Michigan.

Waves are provided as a range of significant wave heights, which is the average of the highest 1/3 of the wave, along with the average height of the highest 10% of the waves which will occasionally be encountered.

SYNOPSIS

High pressure around 30.2 inches will remain in place over the Upper Great Lakes through Tuesday. Expect steady north to northeast winds through Monday and light and variable winds Tuesday. Southwest winds will increase Wednesday as a cold front approaches from the Northern Plains. Winds will become northerly behind the front Thursday afternoon and night.

LMZ261-362-364-366-563-565-567-868-060315
Lake Michigan from Seul Choix Point to Rock Island Passage 5 NM offshore to Mid Lake
Lake Michigan South of a line from Seul Choix Point to the Mackinac Bridge and north of a line from Charlevoix MI to South Fox Island 5 NM offshore
Lake Michigan from Charlevoix to Point Betsie MI 5 NM offshore to Mid Lake
Lake Michigan from Point Betsie to Manistee MI 5 NM offshore to Mid Lake
Lake Michigan from Rock Island Passage to Sturgeon Bay WI
Lake Michigan from Sturgeon Bay to Two Rivers WI 5 NM offshore to Mid Lake
Lake Michigan from Two Rivers to Sheboygan WI 5 NM offshore to Mid Lake
Lake Michigan from Pentwater to Manistee MI 5 NM offshore to Mid Lake
300 PM CDT Sun Jul 5 2026

SHEBOYGAN WI TO PENTWATER MI NORTH...

TONIGHT
Northeast winds 15 to 25 kt diminishing to 5 to 10 kt. Waves 2 to 4 ft subsiding to 1 to 3 ft.

MONDAY
Northeast winds 5 to 10 kt becoming north 15 to 25 kt. Waves 2 to 4 ft.

MONDAY NIGHT
North winds 10 to 20 kt becoming northeast 10 to 15 kt late in the evening, then diminishing to 5 to 10 kt after midnight backing to northwest late. Waves 2 to 4 ft subsiding to 1 to 2 ft.

TUESDAY
Southwest winds 10 to 15 kt. Waves 1 to 2 ft.

TUESDAY NIGHT
Southwest winds 10 to 15 kt diminishing to 5 to 10 kt. Waves 1 to 2 ft.

WEDNESDAY
Southwest winds 10 to 15 kt increasing to 10 to 20 kt. Chance of showers. Waves 1 to 2 ft building to 1 to 3 ft.

WEDNESDAY NIGHT
Southwest winds 10 to 20 kt becoming west. Showers likely. Waves 2 to 4 ft.

THURSDAY
North winds 10 to 20 kt. Chance of showers. Waves 2 to 4 ft.

FRIDAY
Northeast winds 10 to 20 kt increasing to 15 to 25 kt. Waves 1 to 3 ft.

LMZ080-669-671-673-675-777-779-870-872-874-876-878-060315
Lake Michigan from Michigan City IN to St. Joseph MI 5 NM offshore to Mid Lake
Lake Michigan from Sheboygan to Port Washington WI 5 NM offshore to Mid Lake
Lake Michigan from Port Washington to North Point Light WI 5 NM offshore to Mid Lake
Lake Michigan from North Point Light to Wind Point WI 5 NM offshore to Mid Lake
Lake Michigan from Wind Point WI to Winthrop Harbor IL 5 NM offshore to Mid Lake
Lake Michigan from Winthrop Harbor to Wilmette Harbor IL 5 NM offshore to Mid Lake
Lake Michigan from Wilmette Harbor IL to Michigan City IN 5 NM offshore to Mid Lake
Lake Michigan from Whitehall to Pentwater MI 5 NM offshore to Mid Lake
Lake Michigan from Grand Haven to Whitehall MI 5 NM offshore to Mid Lake
Lake Michigan from Holland to Grand Haven MI 5 NM offshore to Mid Lake
Lake Michigan from South Haven to Holland MI 5 NM offshore to Mid Lake
Lake Michigan from St. Joseph to South Haven MI 5 NM offshore to Mid Lake
300 PM CDT Sun Jul 5 2026

SHEBOYGAN WI TO PENTWATER MI SOUTH...

TONIGHT
North winds 15 to 25 kt becoming northeast 10 to 15 kt. Waves 3 to 5 ft.

MONDAY
Northeast winds 10 to 15 kt becoming north 15 to 25 kt. Waves 2 to 4 ft.

MONDAY NIGHT
North winds 10 to 20 kt diminishing to 5 to 10 kt. Waves 2 to 4 ft subsiding to 1 to 3 ft.

TUESDAY
North winds 5 to 10 kt increasing to 10 to 15 kt. Waves 1 to 2 ft.

TUESDAY NIGHT
West winds 10 to 15 kt becoming southwest. Waves 1 ft or less.

WEDNESDAY
Southwest winds 10 to 15 kt becoming south 10 to 20 kt. Waves 1 to 3 ft.

WEDNESDAY NIGHT
South winds 10 to 20 kt becoming southwest. Chance of showers. Waves 2 to 4 ft.

THURSDAY
West winds 10 to 20 kt becoming northwest. Chance of showers. Waves 2 to 4 ft.

FRIDAY
Northeast winds 10 to 20 kt becoming north 15 to 25 kt. Waves 2 to 4 ft.

LMZ761-060315
MAFOR 0522/ MICHIGAN NORTH 11130 11120 11110 13100 11120 11830. Waves 1 to 3 feet building to 2 to 4 feet, then subsiding to 1 to 3 feet tonight and Monday.

MICHIGAN SOUTH 11830 11120 14110 11820 11830. Waves 2 to 4 feet subsiding to 1 to 3 feet tonight and Monday.

Cronce

Experimental modernized open lake forecast is available online at weather.gov/mkx/glftable

Graphical marine forecasts are available online at: weather.gov/greatlakes