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Duluth, MN Local Forecast Office

10NM SW Grand Portage MN

Marine Point Forecast

[NOTICE]
    • Friday

      Friday:N wind around 10 kt, with gusts as high as 20 kt. A chance of snow.   Waves around 1 ft.

      High: 28 °F

      N 10kt
      1ft

      Small Craft Advisory
      Small Craft Advisory

    • Friday Night

      Friday Night:N wind around 10 kt, with gusts as high as 20 kt. A chance of snow.   Waves around 1 ft.

      Low: 18 °F

      N 10kt
      1ft

      Small Craft Advisory
      Small Craft Advisory

    • Saturday

      Saturday:N wind 5 to 10 kt, with gusts as high as 20 kt. A chance of snow.   Waves around 1 ft.

      High: 25 °F

      N 10kt
      1ft

    • Saturday Night

      Saturday Night:NNW wind 5 to 10 kt, with gusts as high as 25 kt. A chance of flurries before midnight.   Waves 1 ft or less.

      Low: 17 °F

      NNW 10kt
      < 1ft

    • Sunday

      Sunday:N wind 10 to 15 kt, with gusts as high as 25 kt. Mostly cloudy. Waves 1 ft or less.

      High: 22 °F

      N 15kt
      < 1ft

    • Sunday Night

      Sunday Night:N wind 10 to 15 kt, with gusts as high as 30 kt. Partly cloudy. Waves 1 ft or less.

      Low: 3 °F

      N 15kt
      < 1ft

    • Monday

      Monday:N wind 5 to 10 kt becoming SE in the afternoon. Winds could gust as high as 20 kt. Mostly sunny. Waves 1 ft or less.

      High: 14 °F

      N 10kt
      < 1ft

    • Monday Night

      Monday Night:SE wind 5 to 15 kt, with gusts as high as 30 kt. A chance of snow.   Waves 1 ft or less building to 3 ft.

      Low: 9 °F

      SE 15kt
      Waves Building3ft

    • Tuesday

      Tuesday:S wind 10 to 15 kt becoming SW in the afternoon. Winds could gust as high as 30 kt. A chance of snow.   Waves 2 to 4 ft.

      High: 26 °F

      S 15kt
      2-4ft


High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 2:51 am CST Feb 20, 2026
Forecast Valid: 3am CST Feb 20, 2026-6pm CST Feb 26, 2026

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Detailed Forecast

Friday
N wind around 10 kt, with gusts as high as 20 kt. A chance of snow. Waves around 1 ft.
Friday Night
N wind around 10 kt, with gusts as high as 20 kt. A chance of snow. Waves around 1 ft.
Saturday
N wind 5 to 10 kt, with gusts as high as 20 kt. A chance of snow. Waves around 1 ft.
Saturday Night
NNW wind 5 to 10 kt, with gusts as high as 25 kt. A chance of flurries before midnight. Waves 1 ft or less.
Sunday
N wind 10 to 15 kt, with gusts as high as 25 kt. Mostly cloudy. Waves 1 ft or less.
Sunday Night
N wind 10 to 15 kt, with gusts as high as 30 kt. Partly cloudy. Waves 1 ft or less.
Monday
N wind 5 to 10 kt becoming SE in the afternoon. Winds could gust as high as 20 kt. Mostly sunny. Waves 1 ft or less.
Monday Night
SE wind 5 to 15 kt, with gusts as high as 30 kt. A chance of snow. Waves 1 ft or less building to 3 ft.
Tuesday
S wind 10 to 15 kt becoming SW in the afternoon. Winds could gust as high as 30 kt. A chance of snow. Waves 2 to 4 ft.

*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: 2:51 am CST Feb 20, 2026
Forecast Valid: 3am CST Feb 20, 2026-6pm CST Feb 26, 2026
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