855
FZUS63 KMKX 310743
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
243 AM CDT Sun May 31 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 over the Upper Great Lakes will strengthen to
around 30.2 inches and continue to dominate the weather pattern
through Tuesday. Lighter winds are expected today. Then breezy
easterly winds will return Monday into Monday night before
weakening for Tuesday. Winds are to become more southerly on
Wednesday as the high pressure breaks down and exits the region
while low pressure develops over the Plains. Look for increasing
southerly winds Thursday as low pressure around 29.7 inches
crosses the Northern Plains.

LMZ261-362-364-366-563-565-567-868-311515-
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-
243 AM CDT Sun May 31 2026

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TODAY...South winds 5 to 10 kt becoming southwest. Waves 1 to
3 ft.
.TONIGHT...Southwest winds 10 to 15 kt becoming west late in the
evening, then becoming northwest after midnight becoming north
late. Waves 1 to 2 ft.
.MONDAY...Northeast winds 10 to 15 kt increasing to 10 to 20 kt.
Waves 1 to 3 ft.
.MONDAY NIGHT...Northeast winds 10 to 20 kt diminishing to 10 to
15 kt. Waves 2 to 4 ft.
.TUESDAY...Northeast winds 5 to 10 kt becoming northwest 10 to
20 kt in the afternoon. Waves 1 to 3 ft.
.TUESDAY NIGHT...Northwest winds 10 to 20 kt becoming southwest
5 to 10 kt. Waves 1 to 3 ft subsiding to 1 to 2 ft.
.WEDNESDAY...Southwest winds 10 to 15 kt increasing to 10 to
20 kt. Waves 1 to 2 ft.
.THURSDAY...Southwest winds 15 to 25 kt becoming south. Waves
2 to 4 ft building to 3 to 5 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-311515-
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-
243 AM CDT Sun May 31 2026

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TODAY...Southeast winds 10 to 15 kt backing to northeast. Waves
1 to 3 ft subsiding to 1 to 2 ft.
.TONIGHT...Northeast winds 5 to 10 kt becoming north. Waves 1 ft
or less.
.MONDAY...North winds 5 to 10 kt increasing to 10 to 15 kt. Waves
1 to 3 ft.
.MONDAY NIGHT...Northeast winds 10 to 20 kt becoming east. Waves
2 to 4 ft.
.TUESDAY...Northeast winds 10 to 15 kt becoming north 10 to
20 kt. Waves 2 to 4 ft.
.TUESDAY NIGHT...North winds 10 to 20 kt becoming northeast 5 to
10 kt. Waves 2 to 4 ft.
.WEDNESDAY...East winds 5 to 10 kt becoming south. Waves 1 to
2 ft.
.THURSDAY...Southwest winds 10 to 20 kt becoming south 15 to
25 kt. Waves 2 to 4 ft building to 3 to 5 ft.

$$

LMZ761-311515-
MAFOR 3110/
MICHIGAN NORTH 11410 11400 13510 11500 11700 11800. Waves 2 feet
or less.

MICHIGAN SOUTH 11310 12200 11110 13100 11800. Waves 1 to 3 feet
subsiding to 1 foot or less today. Waves 1 foot or less tonight.

$$


Wagner

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

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