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Duluth, MN Local Forecast Office

8NM ENE Grand Portage MN

Marine Point Forecast

[NOTICE]
    • Tonight

      Tonight:WSW wind 10 to 15 kt becoming NW 5 to 10 kt after midnight. Winds could gust as high as 20 kt. Partly cloudy. Waves 1 to 2 ft.

      Low: 44 °F

      WSW 15kt⇓
      1-2ft

      Small Craft Advisory
      Small Craft Advisory

    • Monday

      Monday:Variable winds 5 kt or less. Partly sunny, then gradually becoming sunny. Waves 1 ft or less.

      High: 51 °F

      Light Wind
      < 1ft

    • Monday Night

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

      Low: 44 °F

      Light Wind
      < 1ft

    • Tuesday

      Tuesday:Variable winds 5 kt or less. Sunny. Waves 1 ft or less.

      High: 51 °F

      Light Wind
      < 1ft

    • Tuesday Night

      Tuesday Night:SSE wind 5 to 10 kt becoming SW in the evening. Partly cloudy. Waves 1 ft or less.

      Low: 48 °F

      SW 10kt
      < 1ft

    • Wednesday

      Wednesday:SW wind 5 to 10 kt. Mostly sunny. Waves 1 ft or less.

      High: 55 °F

      SW 10kt
      < 1ft

    • Wednesday Night

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

      Low: 46 °F

      Light Wind
      < 1ft

    • Thursday

      Thursday:Variable winds 5 kt or less. Mostly sunny. Waves 1 ft or less.

      High: 51 °F

      Light Wind
      < 1ft

    • Thursday Night

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

      Low: 47 °F

      Light Wind
      < 1ft


High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 5:51 pm CDT Oct 18, 2026
Forecast Valid: 8pm CDT Oct 18, 2026-6pm CDT Oct 25, 2026

View Nearby Observations

Detailed Forecast

Tonight
WSW wind 10 to 15 kt becoming NW 5 to 10 kt after midnight. Winds could gust as high as 20 kt. Partly cloudy. Waves 1 to 2 ft.
Monday
Variable winds 5 kt or less. Partly sunny, then gradually becoming sunny. Waves 1 ft or less.
Monday Night
Variable winds 5 kt or less. Partly cloudy. Waves 1 ft or less.
Tuesday
Variable winds 5 kt or less. Sunny. Waves 1 ft or less.
Tuesday Night
SSE wind 5 to 10 kt becoming SW in the evening. Partly cloudy. Waves 1 ft or less.
Wednesday
SW wind 5 to 10 kt. Mostly sunny. Waves 1 ft or less.
Wednesday Night
Variable winds 5 kt or less. Partly cloudy. Waves 1 ft or less.
Thursday
Variable winds 5 kt or less. Mostly sunny. Waves 1 ft or less.
Thursday Night
Variable winds 5 kt or less. Partly cloudy. 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: 47.99°N 89.5°W
Last Update: 5:51 pm CDT Oct 18, 2026
Forecast Valid: 8pm CDT Oct 18, 2026-6pm CDT Oct 25, 2026
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