Coastal Waters Forecast for Harbor Beach to Port Sanilac MI (LHZ442) (Text-Only)
NWS Forecast for: Harbor Beach to Port Sanilac MI (LHZ442)
Issued by: National Weather Service Detroit/Pontiac, MI
Last Update: 946 AM EDT Wed Mar 18 2026
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Rest Of Today: South winds 15 to 20 knots. Partly cloudy late in the morning becoming mostly cloudy. Scattered flurries in the afternoon. Waves 1 to 3 feet building to 3 to 5 feet in the afternoon. Waves occasionally around 7 feet.

Tonight: South winds 15 to 20 knots becoming southwest 10 to 15 knots after midnight. Mostly cloudy. Scattered flurries early in the evening. Waves 2 to 4 feet subsiding to 1 to 3 feet after midnight.

Thursday: West winds 5 to 10 knots. Mostly cloudy with a slight chance of light snow showers early in the morning, then partly cloudy in the late morning and afternoon. Waves 2 feet or less.

Thursday Night: North winds 5 to 10 knots backing to the southwest in the late evening and overnight. Partly cloudy until early morning becoming mostly cloudy. Waves 2 feet or less.

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







Zone Forecast: Harbor Beach to Port Sanilac MI (LHZ442)

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