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Marquette, MI Local Forecast Office

30NM SE Grand Portage MN

Marine Zone Forecast

Late This Afternoon

South winds 5 to 15 knots. Waves calm to 2 feet.

Tonight

South winds 10 to 20 knots increasing to 15 to 25 knots after midnight, then diminishing to 10 to 20 knots late. Waves building to 2 to 4 feet.

Saturday

South winds 10 to 20 knots. Waves subsiding to 1 to 3 feet.

Saturday Night

South winds 10 to 20 knots increasing to 15 to 25 knots after midnight, then becoming southwest 10 to 20 knots late. Waves building to 3 to 5 feet occasionally to 7 feet, then subsiding to 2 to 4 feet.

Sunday

Southwest winds 15 to 25 knots backing south by mid afternoon. Waves building to 3 to 5 feet occasionally to 7 feet, then subsiding to 1 to 3 feet.

Sunday Night

South winds 5 to 15 knots. A chance of showers. Waves subsiding to calm to 2 feet.

Monday

South winds 5 to 15 knots. A chance of showers through early afternoon. A chance of thunderstorms. Showers likely by mid afternoon. Waves calm to 2 feet.

Monday Night

West winds 5 to 15 knots. A chance of showers and thunderstorms through midnight. Waves calm to 2 feet.

Tuesday

West winds 5 to 15 knots backing southwest. Waves calm to 2 feet.

Wednesday

Southwest winds 5 to 15 knots. Waves calm to 2 feet.