| NWS Forecast for: Harbor Beach to Port Sanilac MI (LHZ442) Issued by: National Weather Service Detroit/Pontiac, MI Last Update: 357 AM EDT Sat Sep 19 2026 | |
| Today: Southeast winds 10 to 15 knots. Mostly cloudy. A slight chance of showers in the afternoon. Waves 1 to 3 feet. Tonight: Southeast winds 10 to 15 knots. Cloudy. A slight chance of showers early in the evening, then a chance of showers in the late evening and early morning. Showers likely after midnight. Waves 1 to 3 feet. Sunday: Northeast winds 10 to 15 knots increasing to 15 to 20 knots in the late morning and afternoon. Mostly cloudy with a chance of showers early in the morning, then partly cloudy in the late morning and afternoon. Waves 1 to 3 feet building to 3 to 5 feet in the late morning and afternoon. Waves occasionally around 7 feet. A small craft advisory may be needed. Sunday Night: Northeast winds 20 to 25 knots. Partly cloudy. Waves 4 to 6 feet. 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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