Last Update: 1001 PM EDT Thu Sep 25 2025

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Marquette, MI Local Forecast Office

24NM NNW Copper Harbor MI

Marine Zone Forecast

Rest Of Tonight
North winds 15 to 25 knots veering northeast late. Waves 2 to 4 feet building to 3 to 5 feet occasionally to 7 feet, then subsiding to 2 to 4 feet.
Friday
North winds 5 to 15 knots veering east late. Waves subsiding to calm to 2 feet.
Friday Night
South winds 5 to 15 knots increasing to 10 to 20 knots after midnight. Waves building to 1 to 3 feet.
Saturday
Southwest winds 10 to 20 knots veering west by mid afternoon. A slight chance of showers through early afternoon. Waves building to 2 to 4 feet, then subsiding to 1 to 3 feet.
Saturday Night
West winds 5 to 15 knots. Waves subsiding to calm to 2 feet.
Sunday
Southwest winds 10 to 20 knots. Waves building to 1 to 3 feet.
Sunday Night
Southwest winds 5 to 15 knots. Waves subsiding to calm to 2 feet.
Monday
West winds 5 to 15 knots backing east. Waves calm to 2 feet.
Tuesday
East winds 5 to 15 knots increasing to 10 to 20 knots. Waves building to 2 to 4 feet.



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1001 PM EDT Thu Sep 25 2025
 
 

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