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Detroit/Pontiac, MI Local Forecast Office

12NM N Port Sanilac MI

Marine Zone Forecast

Tonight

Northwest winds 10 to 15 knots increasing to 15 to 20 knots after midnight. Mostly cloudy. A chance of waterspouts in the evening. Light showers and thunderstorms likely in the evening, then a chance of showers and a slight chance of thunderstorms after midnight. Waves 1 to 3 feet building to 3 to 5 feet after midnight. Waves occasionally around 7 feet.

Sunday

Northwest winds 20 to 25 knots diminishing to 15 to 20 knots early in the afternoon. Mostly cloudy with a slight chance of showers and thunderstorms until late afternoon, then partly cloudy with a chance of showers and thunderstorms early in the afternoon. Waves 4 to 6 feet. Waves occasionally around 7 feet.

Sunday Night

Northwest winds 15 to 20 knots. Partly cloudy. A chance of showers and thunderstorms early in the evening. Waves 4 to 6 feet. Waves occasionally around 7 feet.

Monday

Northwest winds 15 to 20 knots. Partly cloudy. Waves 3 to 5 feet. Waves occasionally around 7 feet.

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