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Detroit/Pontiac, MI Local Forecast Office

12NM N Port Sanilac MI

Marine Zone Forecast

Today

Northwest winds 10 to 15 knots becoming north 5 to 10 knots in the afternoon. Partly cloudy in the morning becoming mostly cloudy. Waves 3 to 5 feet subsiding to 1 to 3 feet in the afternoon. Waves occasionally around 7 feet.

Tonight

Northeast winds 5 to 10 knots increasing to 10 to 15 knots after midnight. Cloudy. A chance of light rain until early morning. A slight chance of light snow in the late evening and overnight. Light rain likely after midnight. Waves 1 to 3 feet.

Sunday

Northeast winds 15 to 20 knots increasing to 20 to 25 knots with gusts to 30 knots in the late morning and afternoon. Cloudy. Light rain early in the morning, then light rain and snow in the late morning and afternoon. Waves 3 to 5 feet building to 5 to 7 feet early in the afternoon. Waves occasionally around 10 feet.

Sunday Night

North winds to 30 knots diminishing to 20 to 25 knots in the late evening and overnight. Light snow early in the evening. Light snow likely in the late evening and overnight. Waves 6 to 9 feet. Waves occasionally around 12 feet.

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