| NWS Forecast for: Harbor Beach to Port Sanilac MI (LHZ442) Issued by: National Weather Service Detroit/Pontiac, MI Last Update: 336 AM EDT Thu Sep 18 2025 | |
| Today: West winds 5 to 10 knots becoming north 10 to 15 knots in the afternoon. Mostly sunny in the morning, then partly cloudy with a slight chance of showers in the afternoon. Waves 2 feet or less. Tonight: Northeast winds 10 to 15 knots. Partly cloudy. Waves 1 to 3 feet. Friday: Northeast winds 10 to 15 knots increasing to 15 to 20 knots early in the afternoon. Partly cloudy until late afternoon then clearing. Waves 1 to 3 feet building to 2 to 4 feet early in the afternoon. Friday Night: Northeast winds 15 to 20 knots becoming east 10 to 15 knots after midnight. Mostly clear. Waves 2 to 4 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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