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Duluth, MN Local Forecast Office

10NM SW Grand Portage MN

Marine Zone Forecast

Tonight

North wind 5 knots becoming west in the late evening and overnight. Mostly cloudy until early morning then becoming partly cloudy. Waves 1 foot or less.

Monday

Northwest wind 5 to 10 knots becoming southwest 10 to 15 knots with gusts to around 20 knots in the afternoon. Sunny. Waves 1 to 2 feet.

Monday Night

Southwest wind 10 to 15 knots becoming west early in the morning. Gusts up to 20 knots. Slight chance of snow through the night. Slight chance of rain after midnight. Waves 1 to 3 feet.

Tuesday

Northwest wind 5 to 10 knots becoming north late in the morning, then becoming east in the afternoon. Mostly sunny. Waves 1 to 2 feet.

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