Last Update: 945 AM CDT Thu Mar 20 2025

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Duluth, MN Local Forecast Office

10NM SW Grand Portage MN

Marine Zone Forecast

Rest Of Today
Northwest wind 5 to 10 knots with gusts to around 20 knots becoming southwest 15 to 20 knots with gusts to around 25 knots in the afternoon. Sunny. Waves 1 to 2 feet building to 2 to 4 feet late.
Tonight
Southwest wind 20 to 25 knots. Gusts up to 25 knots increasing to 30 knots in the late evening and overnight. Mostly cloudy. Waves 4 to 7 feet. Waves occasionally to 9 feet.
Friday
West wind 15 to 20 knots with gusts to around 30 knots becoming northwest with gusts to around 25 knots in the afternoon. Chance of flurries. Waves 4 to 7 feet subsiding to 2 to 4 feet in the afternoon. Waves occasionally to 9 feet.
Friday Night
North wind 15 to 20 knots. Gusts up to 30 knots decreasing to 25 knots early in the morning. Chance of flurries in the evening. Waves 2 to 4 feet subsiding to 1 to 2 feet early in the morning.

note...wave height forecasts are for ice free areas.



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945 AM CDT Thu Mar 20 2025
 
 

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