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Last Update: 400 AM EDT Thu Jun 25 2026
For More Weather Information:
30NM SE Grand Portage MN
Marine Zone Forecast
Early This Morning
Northeast winds 5 to 15 knots. Patchy fog. Waves calm to 2 feet.
Today
Northeast winds 5 to 15 knots becoming north less than 10 knots in the afternoon, then backing west late. Patchy dense fog through early afternoon. Waves calm to 2 feet.
Tonight
West winds 5 to 15 knots becoming southwest less than 10 knots after midnight. Waves calm to 2 feet.
Friday
Southwest winds less than 10 knots becoming northeast 5 to 15 knots in the afternoon. Waves calm to 2 feet.
Friday Night
East winds 5 to 15 knots. Waves calm to 2 feet.
Saturday
East winds 5 to 15 knots becoming northeast 10 to 20 knots by mid afternoon. Waves calm to 2 feet.
Saturday Night
East winds 10 to 20 knots diminishing to 5 to 15 knots after midnight. Waves building to 1 to 3 feet, then subsiding to calm to 2 feet.
Sunday
East winds 15 to 25 knots veering southeast. A chance of showers. Waves building to 3 to 6 feet occasionally to 8 feet.
Monday
Southeast winds 10 to 20 knots veering south. A chance of showers and thunderstorms. Waves subsiding to 1 to 3 feet.
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