Last Update: 1001 PM EDT Mon Aug 17 2026

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Marquette, MI Local Forecast Office

24NM NNW Copper Harbor MI

Marine Zone Forecast

Rest Of Tonight
Southwest winds 5 to 15 knots increasing to 10 to 20 knots after midnight, then veering west late. A slight chance of thunderstorms by midnight. A slight chance of showers. Waves 1 to 3 feet.
Tuesday
Northwest winds 10 to 20 knots becoming west 5 to 15 knots in the afternoon, then becoming southwest 10 to 20 knots late. Waves subsiding to calm to 2 feet, then building to 1 to 3 feet.
Tuesday Night
West winds 10 to 20 knots diminishing to 5 to 15 knots after midnight, then veering northwest late. Waves building to 2 to 4 feet, then subsiding to calm to 2 feet.
Wednesday
Northwest winds 5 to 15 knots backing west by mid afternoon. Waves calm to 2 feet.
Wednesday Night
Southwest winds 5 to 15 knots diminishing to less than 10 knots after midnight. Waves calm to 2 feet.
Thursday
South winds less than 10 knots increasing to 5 to 15 knots by mid afternoon. Waves calm to 2 feet.
Thursday Night
South winds 5 to 15 knots. A chance of showers. Waves calm to 2 feet.
Friday
Southwest winds 10 to 20 knots becoming north 5 to 15 knots. A chance of showers. Waves calm to 2 feet.
Saturday
North winds 10 to 20 knots. Waves calm to 2 feet.



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1001 PM EDT Mon Aug 17 2026
 
 

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