Hazardous Weather Conditions

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Duluth, MN Local Forecast Office

10NM SW Grand Portage MN

Marine Point Forecast

[NOTICE]
    • Tonight

      Tonight:Variable winds 5 kt or less. A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and midnight.   Waves 1 ft or less.

      Low: 48 °F

      Light Wind
      < 1ft

    • Tuesday

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

      High: 63 °F

      Light Wind
      < 1ft

    • Tuesday Night

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

      Low: 45 °F

      Light Wind
      < 1ft

    • Wednesday

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

      High: 58 °F

      ENE 10kt
      < 1ft

    • Wednesday Night

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

      Low: 43 °F

      Light Wind
      < 1ft

    • Thursday

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

      High: 57 °F

      Light Wind
      < 1ft

    • Thursday Night

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

      Low: 46 °F

      Light Wind
      < 1ft

    • Friday

      Friday:WNW wind 5 to 15 kt becoming SSE in the afternoon. Mostly sunny. Waves 1 ft or less.

      High: 61 °F

      S 15kt
      < 1ft

    • Friday Night

      Friday Night:NE wind 5 to 10 kt. Mostly clear. Waves 1 ft or less.

      Low: 45 °F

      NE 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: 3:56 pm CDT May 25, 2026
Forecast Valid: 4pm CDT May 25, 2026-6pm CDT Jun 1, 2026

View Nearby Observations

Detailed Forecast

Tonight
Variable winds 5 kt or less. A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and midnight. 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
NE wind 5 to 10 kt becoming E in the afternoon. Winds could gust as high as 15 kt. Mostly sunny. Waves 1 ft or less.
Wednesday Night
Variable winds 5 kt or less. Clear. Waves 1 ft or less.
Thursday
Variable winds 5 kt or less. Sunny. Waves 1 ft or less.
Thursday Night
Variable winds 5 kt or less. Mostly clear. Waves 1 ft or less.
Friday
WNW wind 5 to 15 kt becoming SSE in the afternoon. Mostly sunny. Waves 1 ft or less.
Friday Night
NE wind 5 to 10 kt. Mostly clear. 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: 3:56 pm CDT May 25, 2026
Forecast Valid: 4pm CDT May 25, 2026-6pm CDT Jun 1, 2026
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