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Duluth, MN Local Forecast Office

12NM WSW Grand Portage MN

Marine Point Forecast

[NOTICE]

    • Today

      Today:Variable winds 5 kt or less. Partly sunny. Waves 1 ft or less.

      High: 61 °F

      Light Wind
      < 1ft

    • Tonight

      Tonight:Variable winds less than 5 kt becoming NNE 5 to 10 kt after midnight. Winds could gust as high as 15 kt. Cloudy, then gradually becoming partly cloudy. Waves 1 ft or less.

      Low: 49 °F

      ⇑NNE 10kt
      < 1ft

    • Sunday

      Sunday:NNE wind 5 to 10 kt becoming ENE in the afternoon. Winds could gust as high as 15 kt. Mostly sunny. Waves 1 ft or less.

      High: 58 °F

      NNE 10kt
      < 1ft

    • Sunday Night

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

      Low: 43 °F

      Light Wind
      < 1ft

    • Monday

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

      High: 55 °F

      Light Wind
      < 1ft

    • Monday Night

      Monday Night:Variable winds 5 kt or less. Mostly clear. Waves 1 ft or less.

      Low: 42 °F

      Light Wind
      < 1ft

    • Tuesday

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

      High: 60 °F

      Light Wind
      < 1ft

    • Tuesday Night

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

      Low: 44 °F

      Light Wind
      < 1ft

    • Wednesday

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

      High: 60 °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: 3:12 am CDT Sep 19, 2026
Forecast Valid: 5am CDT Sep 19, 2026-6pm CDT Sep 25, 2026

View Nearby Observations

Detailed Forecast

Today
Variable winds 5 kt or less. Partly sunny. Waves 1 ft or less.
Tonight
Variable winds less than 5 kt becoming NNE 5 to 10 kt after midnight. Winds could gust as high as 15 kt. Cloudy, then gradually becoming partly cloudy. Waves 1 ft or less.
Sunday
NNE wind 5 to 10 kt becoming ENE in the afternoon. Winds could gust as high as 15 kt. Mostly sunny. Waves 1 ft or less.
Sunday Night
Variable winds 5 kt or less. Mostly cloudy. Waves 1 ft or less.
Monday
Variable winds 5 kt or less. Mostly sunny. Waves 1 ft or less.
Monday Night
Variable winds 5 kt or less. Mostly clear. Waves 1 ft or less.
Tuesday
Variable winds 5 kt or less. Sunny. Waves 1 ft or less.
Tuesday Night
Variable winds 5 kt or less. Mostly clear. Waves 1 ft or less.
Wednesday
Variable winds 5 kt or less. 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 89.95°W
Last Update: 3:12 am CDT Sep 19, 2026
Forecast Valid: 5am CDT Sep 19, 2026-6pm CDT Sep 25, 2026
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