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: 419 AM EDT Wed Apr 15 2026
Print




Today: Southwest winds 10 to 15 knots. A chance of showers and a slight chance of thunderstorms in the morning, then showers and a chance of thunderstorms in the afternoon. Some thunderstorms may produce heavy rainfall. Waves 1 to 3 feet.

Tonight: Southwest winds 10 to 15 knots. Light showers likely and a chance of thunderstorms until early morning, then showers and a chance of thunderstorms after midnight. Some thunderstorms may produce heavy rainfall. Waves 2 feet or less.

Thursday: Southwest winds 10 to 15 knots. Rain showers likely until late afternoon, then showers and a chance of thunderstorms early in the afternoon. Some thunderstorms may produce heavy rainfall early in the afternoon. Waves 2 feet or less.

Thursday Night: West winds 10 to 15 knots becoming northwest 5 to 10 knots in the late evening and overnight. Mostly cloudy. A chance of showers and thunderstorms early in the evening, then a chance of showers in the late evening and early morning. Some thunderstorms may produce heavy rainfall early in the evening. Waves 2 feet or less.

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







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

Visit your local NWS office at: https://www.weather.gov/dtx