276
FZUS63 KMKX 031958
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
158 PM CST Sat Jan 3 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...

West winds will become variable tonight and early Sunday as a
broad area of high pressure averaging 30.1 inches moves across the
western Great Lakes. Southerly winds will develop by Sunday
afternoon as that high becomes centered over central Ohio, and low
pressure of 29.6 inches moves across southern Minnesota. Gales are
not expected, but winds over the open waters could aproach 30
knots before weakening Monday morning.

A few other system may impact the Lake Michigan area through mid
to late week with winds varying between westerly and southerly,
but the probability of gales is low at this time.

LMZ261-362-364-366-563-565-567-868-040415-
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-
158 PM CST Sat Jan 3 2026

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TONIGHT...Northwest winds 10 to 20 kt. Slight chance of very
light freezing drizzle this evening. Waves 2 to 4 ft.
.SUNDAY...Northwest winds 10 to 15 kt backing to southwest.
Chance of snow and slight chance of light sleet in the afternoon.
Waves 1 to 3 ft subsiding to 1 to 2 ft.
.SUNDAY NIGHT...South winds 10 to 20 kt becoming southwest. Snow
with a chance of freezing rain in the evening, then snow with
possible rain, freezing rain, drizzle and freezing drizzle likely
overnight. Waves 2 to 4 ft building to 5 to 8 ft occasionally to
10 ft.
.MONDAY...West winds 10 to 20 kt diminishing to 10 to 15 kt.
Waves 5 to 8 ft occasionally to 10 ft subsiding to 3 to 5 ft.
.MONDAY NIGHT...South winds 5 to 10 kt. Waves 1 to 3 ft subsiding
to 1 to 2 ft.
.TUESDAY...South winds 10 to 15 kt. Chance of rain in the
morning, then chance of rain and snow in the afternoon. Waves
1 to 2 ft.
.TUESDAY NIGHT...South winds 5 to 10 kt becoming west 10 to
15 kt. Chance of rain and snow. Waves 1 to 3 ft.
.WEDNESDAY...West winds 10 to 15 kt becoming southwest 10 to
20 kt. Waves 1 to 3 ft.
.THURSDAY...South winds 10 to 15 kt increasing to 10 to 20 kt.
Waves 2 to 4 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-040415-
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-
158 PM CST Sat Jan 3 2026

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TONIGHT...Northwest winds 10 to 20 kt diminishing to 10 to
15 kt. Waves 2 to 4 ft.
.SUNDAY...Northwest winds 5 to 10 kt backing to south 10 to
15 kt. Chance of snow and slight chance of light sleet in the
afternoon. Waves 1 to 3 ft.
.SUNDAY NIGHT...South winds 10 to 20 kt becoming southwest 15 to
25 kt. Rain, light freezing rain and snow likely in the evening.
Waves 3 to 5 ft building to 5 to 8 ft occasionally to 10 ft.
.MONDAY...Southwest winds 10 to 20 kt becoming west 10 to 15 kt.
Waves 5 to 8 ft occasionally to 10 ft subsiding to 3 to 5 ft.
.MONDAY NIGHT...South winds 5 to 10 kt increasing to 10 to 15 kt.
Waves 1 to 3 ft.
.TUESDAY...Southeast winds 10 to 15 kt becoming south. Chance of
rain. Waves 1 to 3 ft.
.TUESDAY NIGHT...Southwest winds 10 to 15 kt becoming west. Waves
1 to 3 ft.
.WEDNESDAY...West winds 10 to 15 kt becoming southwest. Waves
1 to 3 ft.
.THURSDAY...Southeast winds 10 to 20 kt. Chance of rain. Waves
2 to 4 ft.

$$

LMZ761-040415-
MAFOR 0323/
MICHIGAN NORTH 14720 12710 11600 11510. Waves 1 to 3 feet
building to 2 to 4 feet, then subsiding to 1 to 3 feet tonight.
Waves 1 to 3 feet subsiding to 1 foot or less Sunday.

MICHIGAN SOUTH 12720 12710 11700 11600 11500 11410. Waves 1 to 3
feet building to 2 to 4 feet, then subsiding to 1 to 3 feet
tonight. Waves 1 to 3 feet Sunday.

$$


Boxell

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

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