| NWS Forecast for: Harbor Beach to Port Sanilac MI (LHZ442) Issued by: National Weather Service Detroit/Pontiac, MI Last Update: 623 PM EDT Mon May 18 2026 | |
Tonight: Southwest winds 15 to 20 knots becoming south 10 to 15 knots in the late evening and overnight. Rain showers and a chance of thunderstorms in the evening, then partly cloudy after midnight. Waves 2 to 4 feet subsiding to 1 to 3 feet in the late evening and overnight. Tuesday: Southwest winds 15 to 20 knots. Gusts to 30 knots in the late morning and afternoon. Mostly cloudy early in the morning becoming partly cloudy. A slight chance of showers until late afternoon, then showers likely and a chance of thunderstorms early in the afternoon. Waves 2 to 4 feet. Tuesday Night: Southwest winds 15 to 20 knots veering to the northwest in the late evening and early morning, then becoming north 10 to 15 knots after midnight. Partly cloudy becoming mostly cloudy in the late evening and early morning becoming partly cloudy. A chance of showers and thunderstorms early in the evening, then a chance of showers in the late evening and early morning. Waves 1 to 3 feet building to 2 to 4 feet after midnight. Wednesday: Northwest winds 10 to 15 knots becoming north 15 to 20 knots in the late morning and afternoon. Partly cloudy early in the morning becoming mostly sunny. 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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