Last Update: 502 PM EDT Fri Sep 19 2025

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Marquette, MI Local Forecast Office

24NM W Ontonagon MI

Marine Zone Forecast

Late This Afternoon
East wind 15 to 20 knots. Mostly cloudy with a slight chance of showers. Waves 2 to 4 feet building to 3 to 5 feet occasionally to 7 feet.
Tonight
East wind 10 to 15 knots. Gusts up to 23 knots. Mostly cloudy. A slight chance of showers and thunderstorms through midnight, then a chance of showers and a slight chance of thunderstorms late. Waves subsiding to 1 to 2 feet.
Saturday
Southeast wind less than 10 knots. Mostly cloudy with a chance of showers and a slight chance of thunderstorms. Waves 1 to 2 feet.
Saturday Night
Southeast wind less than 10 knots veering south after midnight. Mostly cloudy. A chance of showers and a slight chance of thunderstorms in the evening, then a chance of showers after midnight. Waves calm to 1 foot.
Sunday
South wind less than 10 knots in the morning becoming variable. Partly cloudy. A chance of showers in the morning, then a chance of showers and thunderstorms in the afternoon. Waves calm to 1 foot.



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502 PM EDT Fri Sep 19 2025
 
 

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