FZUS53 KDTX 210803 NSHDTX Nearshore Marine Forecast for Michigan National Weather Service Detroit/Pontiac MI 403 AM EDT Sun Jun 21 2026 For waters within five nautical miles of shore Waves are the significant wave height - the average of the highest 1/3 of the wave spectrum. Occasional wave height is the average of the highest 1/10 of the wave spectrum. LHZ422-211615- Inner Saginaw Bay SW of Point Au Gres to Bay Port MI- 403 AM EDT Sun Jun 21 2026 .TODAY...Northwest winds 5 to 10 knots early in the morning becoming light and variable, then becoming southeast 5 to 10 knots late in the afternoon. Mostly sunny in the morning becoming mostly cloudy. Waves 2 feet or less. .TONIGHT...East winds 5 to 10 knots becoming southeast 10 to 15 knots in the late evening and early morning, then diminishing to 5 to 10 knots after midnight. Mostly cloudy. A chance of showers after midnight. Waves 2 feet or less. .MONDAY...Northeast winds 10 to 15 knots. Partly cloudy with a chance of showers early in the morning, then mostly sunny in the late morning and afternoon. Waves 2 feet or less. .MONDAY NIGHT...Northeast winds 10 to 15 knots becoming north 5 to 10 knots in the late evening and early morning, then increasing to 10 to 15 knots after midnight. Mostly clear. Waves 2 feet or less. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LHZ421-211615- Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner Saginaw Bay- 403 AM EDT Sun Jun 21 2026 .TODAY...Northwest winds 5 to 10 knots early in the morning becoming light and variable, then becoming south 5 to 10 knots in the afternoon. Mostly sunny in the morning becoming partly cloudy. Waves 2 feet or less. .TONIGHT...Southeast winds 5 to 10 knots increasing to 10 to 15 knots in the late evening and early morning, then diminishing to 5 to 10 knots after midnight. Mostly cloudy. A slight chance of showers after midnight. Waves 2 feet or less. .MONDAY...Northeast winds 10 to 15 knots. Partly cloudy early in the morning becoming mostly sunny. Waves 2 feet or less. .MONDAY NIGHT...North winds 10 to 15 knots backing to the northwest after midnight. Mostly clear. Waves 1 to 3 feet. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LHZ441-211615- Port Austin to Harbor Beach MI- 403 AM EDT Sun Jun 21 2026 .TODAY...Northwest winds 5 to 10 knots early in the morning becoming light and variable, then becoming north 5 to 10 knots early in the afternoon veering to the east. Mostly sunny in the morning becoming partly cloudy. Waves 2 feet or less. .TONIGHT...Southeast winds 5 to 10 knots. Mostly cloudy. A slight chance of showers after midnight. Waves 2 feet or less. .MONDAY...East winds 5 to 10 knots becoming north 10 to 15 knots in the late morning and afternoon. Mostly cloudy becoming partly cloudy in the late morning and early afternoon becoming mostly sunny. Waves 2 feet or less. .MONDAY NIGHT...North winds 10 to 15 knots. Mostly clear. Waves 1 to 3 feet. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LHZ442-211615- Harbor Beach to Port Sanilac MI- 403 AM EDT Sun Jun 21 2026 .TODAY...Light and variable winds becoming east 5 to 10 knots in the afternoon. Mostly sunny in the morning becoming partly cloudy. Waves 2 feet or less. .TONIGHT...Southeast winds 5 to 10 knots. Cloudy. A chance of showers after midnight. Waves 2 feet or less. .MONDAY...East winds 5 to 10 knots becoming north 10 to 15 knots in the late morning and afternoon. Mostly cloudy with a chance of showers early in the morning, then mostly sunny in the late morning and afternoon. Waves 2 feet or less. .MONDAY NIGHT...North winds 10 to 15 knots diminishing to 5 to 10 knots after midnight. Mostly clear. Waves 1 to 3 feet. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LHZ443-211615- Port Sanilac to Port Huron MI- 403 AM EDT Sun Jun 21 2026 .TODAY...Light and variable winds becoming east 5 to 10 knots in the afternoon. Mostly sunny in the morning becoming mostly cloudy. Waves 2 feet or less. .TONIGHT...East winds 5 to 10 knots veering to the southeast after midnight. Cloudy. A slight chance of showers in the late evening and early morning. A chance of showers after midnight. Waves 2 feet or less. .MONDAY...East winds 10 to 15 knots backing to the northeast in the late morning and early afternoon, then becoming north 15 to 20 knots early in the afternoon. Mostly cloudy with a chance of showers early in the morning, then partly cloudy in the late morning and afternoon. Waves 1 to 3 feet. .MONDAY NIGHT...North winds 10 to 15 knots. Mostly clear. Waves 1 to 3 feet. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LEZ444-211615- Michigan Waters of Lake Erie from Detroit River to North Cape MI- 403 AM EDT Sun Jun 21 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH MONDAY AFTERNOON... .TODAY...Northwest winds 5 to 10 knots early in the morning becoming light and variable, then becoming southeast 5 to 10 knots in the afternoon. Mostly sunny in the morning becoming mostly cloudy. Waves 2 feet or less. .TONIGHT...East winds 5 to 10 knots increasing to 15 to 20 knots. Gusts around 25 knots. A chance of showers early in the evening, then showers in the late evening and early morning. Showers likely and a slight chance of thunderstorms after midnight. Waves 2 feet or less building to 2 to 4 feet after midnight. .MONDAY...Northeast winds 15 to 20 knots with 25 knot gusts diminishing to 10 to 15 knots in the afternoon. Mostly cloudy with a chance of showers until late afternoon, then partly cloudy early in the afternoon. Waves 3 to 5 feet subsiding to 2 to 4 feet early in the afternoon. Waves occasionally around 7 feet. .MONDAY NIGHT...Northeast winds 10 to 15 knots becoming north 5 to 10 knots in the late evening and overnight. Clear. Waves 2 feet or less. See Lake Erie Open Lake Forecast for days 3 through 5. The water temperature at Belle Isle is 66 degrees. $$ BT You can obtain your latest National Weather Service forecasts online a www.weather.gov/greatlakes