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: 347 PM EST Wed Feb 4 2026




Tonight: Northwest winds 5 to 10 knots backing to the west in the late evening and overnight. Partly cloudy. Waves 2 feet or less.

Thursday: Southwest winds 5 to 10 knots becoming south 10 to 15 knots in the late morning and afternoon. Mostly cloudy. A chance of light snow early in the afternoon. Waves 2 feet or less.

Thursday Night: South winds 10 to 15 knots. Mostly cloudy. A chance of light snow early in the evening, then light snow likely in the late evening and overnight. Waves 1 to 3 feet.

Friday: Southwest winds 10 to 15 knots becoming northwest 20 to 25 knots with gusts to 30 knots early in the afternoon. Light snow until late afternoon, then a chance of light snow early in the afternoon. Waves 2 feet or less building to 2 to 4 feet early in the afternoon. A small craft advisory may be needed.

gales will be possible beyond the forecast period. Please refer to the open lakes forecast for more information.

wave heights are for ice free areas.

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







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

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