Great Lakes Forecast
Issued by NWS
Issued by NWS
304 FZUS63 KMKX 061943 GLFLM OPEN LAKE FORECAST for Lake Michigan National Weather Service Milwaukee/Sullivan WI 243 PM CDT Sat Jun 6 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 of 29.9 inches builds into the Upper Great Lakes and strengthening to 30.1 inches overnight. Warm and humid air will linger over the relatively cool waters of Lake Michigan with a light wind regime and cause areas of fog into Sunday morning. Marine Dense Fog Advisory remains in effect until 18z Sunday for the northern 2/3 of Lake Michigan. Low pressure develops in the Great Plains Monday, bringing south- southeasterly winds through at least midweek. Additional chances for thunderstorms develop Monday with more chances throughout the week. LMZ261-362-364-366-563-565-567-868-070315- 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 PM CDT Sat Jun 6 2026 SHEBOYGAN WI TO PENTWATER MI NORTH... ...DENSE FOG ADVISORY IN EFFECT UNTIL 1 PM CDT SUNDAY... .TONIGHT...North winds 10 to 15 kt becoming northeast. Patchy fog. Waves 1 to 2 ft. .SUNDAY...Northeast winds 5 to 10 kt increasing to 10 to 15 kt. Patchy fog. Waves 1 to 2 ft. .SUNDAY NIGHT...Northeast winds 10 to 20 kt veering to southeast. Waves 2 to 4 ft. .MONDAY...Southeast winds 10 to 20 kt becoming east. Waves 3 to 5 ft. .MONDAY NIGHT...East winds 10 to 20 kt becoming southeast. Showers likely overnight. Waves 2 to 4 ft. .TUESDAY...Southeast winds 10 to 15 kt becoming east. Showers likely in the morning, then chance of showers in the afternoon. Waves 2 to 4 ft. .TUESDAY NIGHT...Southeast winds 10 to 15 kt becoming south 5 to 10 kt. Waves 1 to 3 ft. .WEDNESDAY...South winds 10 to 20 kt. Waves 1 to 3 ft building to 3 to 5 ft. .THURSDAY...South winds 15 to 25 kt. Waves 4 to 6 ft occasionally to 8 ft. $$ LMZ669-671-870-872-070315- Lake Michigan from Sheboygan to Port Washington WI 5 NM offshore to Mid Lake- Lake Michigan from Port Washington to North Point Light WI 5 NM offshore to Mid Lake- Lake Michigan from Whitehall to Pentwater MI 5 NM offshore to Mid Lake- Lake Michigan from Grand Haven to Whitehall MI 5 NM offshore to Mid Lake- 243 PM CDT Sat Jun 6 2026 SHEBOYGAN WI TO PENTWATER MI SOUTH TO NORTH POINT LIGHT WI TO GRAND HAVEN MI... ...DENSE FOG ADVISORY IN EFFECT UNTIL 1 PM CDT SUNDAY... .TONIGHT...East winds 5 to 10 kt becoming northeast. Patchy fog. Waves 1 ft or less. .SUNDAY...Northeast winds 5 to 10 kt becoming north 10 to 15 kt. Patchy fog in the morning. Waves 1 to 2 ft. .SUNDAY NIGHT...Northeast winds 10 to 15 kt veering to southeast 10 to 20 kt. Waves 1 to 2 ft building to 2 to 4 ft. .MONDAY...Southeast winds 10 to 20 kt. Waves 3 to 5 ft. .MONDAY NIGHT...Southeast winds 10 to 20 kt. Chance of showers in the evening, then showers likely overnight. Waves 2 to 4 ft. .TUESDAY...Southeast winds 10 to 15 kt becoming south. Chance of showers in the morning. Waves 2 to 4 ft. .TUESDAY NIGHT...South winds 10 to 15 kt. Waves 1 to 3 ft. .WEDNESDAY...South winds 10 to 20 kt. Waves 1 to 3 ft building to 3 to 5 ft. .THURSDAY...South winds 10 to 20 kt increasing to 15 to 25 kt. Waves 4 to 6 ft occasionally to 8 ft. $$ LMZ080-673-675-777-779-874-876-878-070315- Lake Michigan from Michigan City IN to St. Joseph MI 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 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 PM CDT Sat Jun 6 2026 NORTH POINT LIGHT WI TO GRAND HAVEN MI SOUTH... .TONIGHT...Northeast winds 10 to 15 kt diminishing to 5 to 10 kt. Waves 1 ft or less. .SUNDAY...East winds 10 to 15 kt becoming northeast. Waves 1 to 2 ft. .SUNDAY NIGHT...Northeast winds 10 to 15 kt becoming southeast 10 to 20 kt. Waves 1 to 2 ft building to 2 to 4 ft. .MONDAY...Southeast winds 10 to 20 kt. Waves 3 to 5 ft. .MONDAY NIGHT...Southeast winds 10 to 15 kt. Showers likely in the evening, then showers overnight. Waves 2 to 4 ft. .TUESDAY...South winds 10 to 15 kt. Showers in the morning, then chance of showers in the afternoon. Waves 1 to 3 ft. .TUESDAY NIGHT...South winds 10 to 15 kt. Chance of showers. Waves 1 to 2 ft. .WEDNESDAY...South winds 10 to 20 kt. Waves 2 to 4 ft. .THURSDAY...South winds 10 to 20 kt. Waves 3 to 5 ft. $$ LMZ761-070315- MAFOR 0622/ MICHIGAN NORTH 13810 11110 11100 19104 11100 12110. Waves 2 feet or less. MICHIGAN SOUTH 11210 19214 11100 19104 12100 12110 11100 11810. Waves 1 foot or less. $$ Kuroski Experimental modernized open lake forecast is available online at weather.gov/mkx/glftable Graphical marine forecasts are available online at: weather.gov/greatlakes