Marine Point Forecast 47.86°N 89.86°W (Text-Only)
NWS Forecast for: 10NM SW Grand Portage MN
Lake Superior

Issued by: National Weather Service Duluth, MN
Last Update: 5:11 am CDT Jun 23, 2025
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  • Today

    Today: SSW wind 5 to 15 kt becoming WSW in the afternoon. A slight chance of showers between 10am and 11am.  Patchy fog before 10am.  Waves 1 to 2 ft.

    High: 70 °F

    Slight:Chc Showers

  • Tonight

    Tonight: W wind 5 to 10 kt. Mostly clear. Waves 1 to 2 ft.

    Low: 51 °F

    Mostly Clear

  • Tuesday

    Tuesday: W wind 5 to 10 kt becoming SW in the morning. Sunny. Waves 1 ft or less.

    High: 62 °F

    Sunny

  • Tuesday
    Night

    Tuesday Night: Variable winds 5 kt or less. Partly cloudy. Waves 1 ft or less.

    Low: 49 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Variable winds 5 kt or less. A slight chance of showers after 1pm.   Waves 1 ft or less.

    High: 63 °F

    Slight:Chc Showers

  • Wednesday
    Night

    Wednesday Night: Variable winds 5 kt or less. A slight chance of showers.   Waves 1 ft or less.

    Low: 50 °F

    Slight:Chc Showers

  • Thursday

    Thursday: ENE wind around 10 kt, with gusts as high as 20 kt. A chance of showers.   Waves 1 ft or less.

    High: 60 °F

    Chance Showers

  • Thursday
    Night

    Thursday Night: NE wind 5 to 10 kt, with gusts as high as 20 kt. A chance of showers.   Waves 1 ft or less.

    Low: 51 °F

    Chance Showers

  • Friday

    Friday: NE wind 5 to 10 kt. A slight chance of showers.   Waves 1 ft or less.

    High: 63 °F

    Slight:Chc Showers



  • Today: SSW wind 5 to 15 kt becoming WSW in the afternoon. A slight chance of showers between 10am and 11am. Patchy fog before 10am. Waves 1 to 2 ft.

    Tonight: W wind 5 to 10 kt. Mostly clear. Waves 1 to 2 ft.

    Tuesday: W wind 5 to 10 kt becoming SW in the morning. Sunny. Waves 1 ft or less.

    Tuesday Night: Variable winds 5 kt or less. Partly cloudy. Waves 1 ft or less.

    Wednesday: Variable winds 5 kt or less. A slight chance of showers after 1pm. Waves 1 ft or less.

    Wednesday Night: Variable winds 5 kt or less. A slight chance of showers. Waves 1 ft or less.

    Thursday: ENE wind around 10 kt, with gusts as high as 20 kt. A chance of showers. Waves 1 ft or less.

    Thursday Night: NE wind 5 to 10 kt, with gusts as high as 20 kt. A chance of showers. Waves 1 ft or less.

    Friday: NE wind 5 to 10 kt. A slight chance of showers. Waves 1 ft or less.



    Marine Point Forecast: 47.86°N 89.86°W
    Associated Zone Forecast which includes this point

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