Coastal Waters Forecast for Port Sanilac to Port Huron MI (LHZ443) (Text-Only)
NWS Forecast for: Port Sanilac to Port Huron MI (LHZ443)
Issued by: National Weather Service Detroit/Pontiac, MI
Last Update: 1009 PM EST Tue Dec 9 2025




Rest Of Tonight: South winds 10 to 15 knots increasing to 15 to 20 knots early in the morning. A chance of light snow this evening, then light snow and a slight chance of rain after midnight. Waves 1 to 3 feet.

Wednesday: Southwest winds 10 to 15 knots becoming northwest 20 to 25 knots with gusts to 30 knots in the late morning and early afternoon, then becoming north to 30 knots with gusts to 35 knot gales early in the afternoon. Light rain and light snow until late afternoon, then a slight chance of light snow early in the afternoon. Waves 1 to 3 feet building to 6 to 9 feet. Waves occasionally around 12 feet.

Wednesday Night: Northwest winds to 30 knots with gusts to 35 knot gales becoming west 20 to 25 knots after midnight. Mostly cloudy early in the evening becoming partly cloudy. A chance of light snow until early morning. Waves 6 to 9 feet subsiding to 4 to 6 feet after midnight. Waves occasionally around 12 feet.

Thursday: West winds 20 to 25 knots diminishing to 15 to 20 knots early in the afternoon. Partly cloudy. A chance of light snow early in the afternoon. Waves 3 to 5 feet. Waves occasionally around 7 feet.

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







Zone Forecast: Port Sanilac to Port Huron MI (LHZ443)

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