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Marquette, MI Local Forecast Office

30NM SE Grand Portage MN

Marine Zone Forecast

Late This Afternoon

Northeast winds 10 to 20 knots. Waves calm to 2 feet.

Tonight

East winds 10 to 20 knots diminishing to 5 to 15 knots after midnight. A slight chance of showers. Waves building to 1 to 3 feet, then subsiding to calm to 2 feet.

Sunday

East winds 5 to 15 knots increasing to 15 to 25 knots. A slight chance of showers by mid afternoon. Waves building to 3 to 5 feet occasionally to 7 feet.

Sunday Night

East winds 15 to 25 knots becoming southeast 10 to 20 knots after midnight, then backing east late. A chance of showers and thunderstorms. Waves subsiding to 1 to 3 feet.

Monday

East winds 5 to 15 knots becoming northeast 15 to 25 knots by mid afternoon. A chance of showers and a slight chance of thunderstorms. Waves building to 2 to 4 feet.

Monday Night

East winds 15 to 25 knots becoming southwest 10 to 20 knots after midnight. A chance of showers through midnight. Showers likely after midnight. Waves building to 3 to 5 feet occasionally to 7 feet, then subsiding to 2 to 4 feet.

Tuesday

Southwest winds 10 to 20 knots. A chance of showers and thunderstorms by mid afternoon. Waves subsiding to calm to 2 feet.

Tuesday Night

Southwest winds 10 to 20 knots. A chance of showers. Waves building to 1 to 3 feet.

Wednesday

Southwest winds 10 to 20 knots becoming south 5 to 15 knots. A chance of showers and thunderstorms. Waves subsiding to calm to 2 feet.

Thursday

Southwest winds 5 to 15 knots veering west. A chance of showers. Waves calm to 2 feet.