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: 956 AM EDT Fri Mar 13 2026
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Rest Of Today: South winds to 30 knots becoming southwest 20 to 25 knots late in the afternoon. Gusts to 40 knot gales. Snow and a slight chance of light rain late in the morning, then light rain likely and a chance of light snow in the afternoon. Waves 6 to 9 feet subsiding to 3 to 5 feet late in the afternoon. Waves occasionally around 12 feet.

Tonight: West winds to 30 knots with storm force gusts to 50 knots increasing to 35 knot gales with gusts to 45 knot gales in the late evening and early morning, then becoming northwest to 30 knots with gusts to 40 knot gales after midnight. Mostly cloudy with a chance of light rain and snow early in the evening, then mostly cloudy with a chance of light snow and a slight chance of light rain in the late evening and early morning. Partly cloudy after midnight. Waves 5 to 7 feet. Waves occasionally around 10 feet.

Saturday: Northwest winds 20 to 25 knots with gusts to 30 knots diminishing to 10 to 15 knots in the late morning and early afternoon, then becoming north 5 to 10 knots early in the afternoon. Partly cloudy. Waves 4 to 6 feet subsiding to 1 to 3 feet early in the afternoon. Waves occasionally around 8 feet.

Saturday Night: East winds 5 to 10 knots increasing to 15 to 20 knots. Partly cloudy early in the evening becoming mostly cloudy. Snow likely after midnight. Waves 1 to 3 feet building to 2 to 4 feet after midnight.

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







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

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