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Detroit/Pontiac, MI Local Forecast Office

16NM NE Port Sanilac MI

Marine Zone Forecast

Today

South winds 10 to 15 knots. Waves 2 to 4 feet subsiding to 1 to 3 feet late in the afternoon.

Tonight

South winds 10 to 15 knots decreasing to 5 to 10 knots late in the evening...then veering to the north after midnight becoming southwest 10 to 15 knots early in the morning. Showers and a chance of thunderstorms. Waves 2 to 4 feet subsiding to 1 to 3 feet after midnight.

Tuesday

North winds 10 to 15 knots. Showers in the morning... Then a chance of showers in the afternoon. Waves 2 to 4 feet.

Tuesday Night

North winds 10 to 15 knots increasing to 20 to 25 knots in the late evening and overnight. Waves 3 to 5 feet building to 6 to 9 feet in the late evening and overnight. Waves occasionally around 12 feet.

Wednesday

North winds 15 to 20 knots decreasing to 5 to 10 knots. Waves 5 to 7 feet subsiding to 2 to 4 feet late in the evening. Waves occasionally around 10 feet.

Thursday

East winds 5 to 10 knots becoming south 10 to 15 knots in the late evening and early morning. Waves 2 feet or less.

Friday

South winds 5 to 10 knots. Waves 2 feet or less.