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: 333 AM EST Thu Dec 25 2025




Today: North winds 15 to 20 knots. Mostly cloudy. Waves 2 to 4 feet building to 5 to 7 feet in the late morning and afternoon. Waves occasionally around 10 feet.

Tonight: East winds 15 to 20 knots becoming southeast 20 to 25 knots after midnight. Mostly cloudy. A slight chance of light snow after midnight. Waves 4 to 6 feet. Waves occasionally around 8 feet.

Friday: Southeast winds 20 to 25 knots. Gusts to 30 knots until late afternoon. Light snow until late afternoon. Light sleet. Light freezing rain in the late morning and afternoon. Waves 6 to 9 feet. Waves occasionally around 12 feet.

Friday Night: East winds 10 to 15 knots becoming northeast 5 to 10 knots in the late evening and overnight. Mostly cloudy. Waves 3 to 5 feet subsiding to 1 to 3 feet in the late evening and overnight. Waves occasionally around 7 feet.

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







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

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