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Last Update: 400 AM EDT Thu Jun 18 2026
For More Weather Information:
30NM SE Grand Portage MN
Marine Zone Forecast
Early This Morning
West winds 5 to 15 knots. Waves calm to 2 feet.
Today
West winds 5 to 15 knots increasing to 10 to 20 knots in the afternoon. A slight chance of showers and thunderstorms by mid afternoon. Waves building to 1 to 3 feet.
Tonight
West winds 10 to 20 knots becoming northwest 5 to 15 knots after midnight. Waves subsiding to calm to 2 feet.
Friday
West winds 5 to 15 knots becoming southwest 10 to 20 knots in the afternoon. Waves building to 1 to 3 feet.
Friday Night
Southwest winds 5 to 15 knots veering west after midnight. A slight chance of rain showers. Waves subsiding to calm to 2 feet.
Saturday
West winds 5 to 15 knots. Waves calm to 2 feet.
Saturday Night
West winds 5 to 15 knots becoming northwest less than 10 knots after midnight. Waves calm to 2 feet.
Sunday
North winds less than 10 knots increasing to 5 to 15 knots. Waves calm to 2 feet.
Monday
North winds 5 to 15 knots backing west. Waves calm to 2 feet.
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