Last Update: 942 PM EDT Fri Sep 18 2026

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Detroit/Pontiac, MI Local Forecast Office

12NM N Port Sanilac MI

Marine Zone Forecast

Rest Of Tonight
Northeast winds 15 to 20 knots becoming east 10 to 15 knots after midnight. Mostly cloudy. A chance of light rain this evening, then a slight chance of light rain after midnight. Waves 2 to 4 feet subsiding to 1 to 3 feet after midnight.
Saturday
Southeast winds 10 to 15 knots. Mostly cloudy. A slight chance of showers early in the morning, then a chance of showers in the late morning and afternoon. Waves 1 to 3 feet.
Saturday Night
East winds 10 to 15 knots. Cloudy. A slight chance of showers early in the evening, then a chance of showers in the late evening and overnight. Waves 1 to 3 feet.
Sunday
Northeast winds 10 to 15 knots becoming north 20 to 25 knots. Mostly cloudy early in the morning becoming partly cloudy. Waves 1 to 3 feet building to 3 to 5 feet in the late morning and afternoon. Waves occasionally around 7 feet. A small craft advisory may be needed.

see lake huron open lake forecast for days 3 through 5.



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942 PM EDT Fri Sep 18 2026
 
 

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