Hazardous Weather Conditions

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Duluth, MN Local Forecast Office

10NM SW Grand Portage MN

Marine Point Forecast

[NOTICE]
    • Tuesday

      Tuesday:NNE wind 5 to 10 kt becoming SSW in the afternoon. A slight chance of showers, mainly between 11am and 1pm.   Waves 1 ft or less.

      High: 51 °F

      NE 10kt
      < 1ft

    • Tuesday Night

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

      Low: 41 °F

      Light Wind
      < 1ft

    • Wednesday

      Wednesday:N wind 5 to 10 kt becoming E in the morning. A slight chance of showers after 1pm.   Waves 1 ft or less.

      High: 53 °F

      E 10kt
      < 1ft

    • Wednesday Night

      Wednesday Night:ENE wind around 10 kt becoming N after midnight. Winds could gust as high as 20 kt. A slight chance of showers before 1am.   Waves 1 ft or less.

      Low: 42 °F

      NE 10kt
      < 1ft

    • Thursday

      Thursday:NW wind around 10 kt becoming W in the afternoon. A chance of showers and thunderstorms between 1pm and 4pm, then a chance of showers after 4pm.   Waves 1 ft or less.

      High: 60 °F

      W 10kt
      < 1ft

    • Thursday Night

      Thursday Night:NW wind 5 to 10 kt, with gusts as high as 15 kt. Partly cloudy. Waves 1 ft or less.

      Low: 45 °F

      NW 10kt
      < 1ft

    • Juneteenth

      Juneteenth:NW wind around 10 kt becoming W in the afternoon. Winds could gust as high as 15 kt. Mostly sunny. Waves 1 ft or less.

      High: 60 °F

      W 10kt
      < 1ft

    • Friday Night

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

      Low: 44 °F

      Light Wind
      < 1ft

    • Saturday

      Saturday:WNW wind 5 to 10 kt becoming WSW in the morning. Mostly sunny. Waves 1 ft or less.

      High: 58 °F

      WSW 10kt
      < 1ft


High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 3:02 am CDT Jun 16, 2026
Forecast Valid: 4am CDT Jun 16, 2026-6pm CDT Jun 22, 2026

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Detailed Forecast

Tuesday
NNE wind 5 to 10 kt becoming SSW in the afternoon. A slight chance of showers, mainly between 11am and 1pm. Waves 1 ft or less.
Tuesday Night
Variable winds 5 kt or less. Mostly cloudy. Waves 1 ft or less.
Wednesday
N wind 5 to 10 kt becoming E in the morning. A slight chance of showers after 1pm. Waves 1 ft or less.
Wednesday Night
ENE wind around 10 kt becoming N after midnight. Winds could gust as high as 20 kt. A slight chance of showers before 1am. Waves 1 ft or less.
Thursday
NW wind around 10 kt becoming W in the afternoon. A chance of showers and thunderstorms between 1pm and 4pm, then a chance of showers after 4pm. Waves 1 ft or less.
Thursday Night
NW wind 5 to 10 kt, with gusts as high as 15 kt. Partly cloudy. Waves 1 ft or less.
Juneteenth
NW wind around 10 kt becoming W in the afternoon. Winds could gust as high as 15 kt. Mostly sunny. Waves 1 ft or less.
Friday Night
Variable winds 5 kt or less. Partly cloudy. Waves 1 ft or less.
Saturday
WNW wind 5 to 10 kt becoming WSW in the morning. Mostly sunny. Waves 1 ft or less.

*Notices:

  1. This forecast is for a single location. For safety concerns, mariners should be aware of the weather over a larger area. Forecast information for a larger area can be found within the zone forecast and the NDFD graphics.
  2. The forecast conditions at a particular point may not exceed the criteria of a Small Craft Advisory, Gale, Storm etc. These watches/warnings/advisories are issued for the entire zone in which the point resides and mariners should act accordingly.
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ABOUT THIS FORECAST

Point Forecast: 47.86°N 89.86°W
Last Update: 3:02 am CDT Jun 16, 2026
Forecast Valid: 4am CDT Jun 16, 2026-6pm CDT Jun 22, 2026
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