Hazardous Weather Conditions

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Duluth, MN Local Forecast Office

10NM SW Grand Portage MN

Marine Point Forecast

[NOTICE]
    • Tonight

      Tonight:W wind 5 to 10 kt, with gusts as high as 15 kt. Clear. Waves 1 ft or less.

      Low: 13 °F

      W 10kt
      < 1ft

    • Tuesday

      Tuesday:W wind 5 to 10 kt becoming SW in the afternoon. Sunny. Waves 1 ft or less.

      High: 32 °F

      SW 10kt
      < 1ft

    • Tuesday Night

      Tuesday Night:SW wind 5 to 15 kt becoming S in the evening. Winds could gust as high as 25 kt. A chance of flurries before 11pm, then a chance of snow.   Waves 1 to 3 ft.

      Low: 28 °FRising Temperatures

      S 15kt
      1-3ft

    • Wednesday

      Wednesday:ESE wind 10 to 15 kt, with gusts as high as 25 kt. Rain, possibly mixed with snow, becoming all rain after 4pm.   Waves 3 to 4 ft.

      High: 39 °FFalling Temperatures

      ESE 15kt
      3-4ft

    • Wednesday Night

      Wednesday Night:SSE wind 10 to 15 kt becoming WSW in the evening. Winds could gust as high as 30 kt. A chance of rain before 4am, then a slight chance of snow.   Waves 3 to 4 ft.

      Low: 33 °FRising Temperatures

      SSE 15kt
      3-4ft

    • Thursday

      Thursday:W wind 10 to 15 kt, with gusts as high as 30 kt. A slight chance of snow before 7am.   Waves 2 to 3 ft.

      High: 39 °FFalling Temperatures

      W 15kt
      2-3ft

    • Thursday Night

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

      Low: 30 °FRising Temperatures

      Light Wind
      < 1ft

    • Friday

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

      High: 40 °FFalling Temperatures

      Light Wind
      < 1ft

    • Friday Night

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

      Low: 31 °FRising Temperatures

      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: 8:07 pm CDT Apr 6, 2026
Forecast Valid: 10pm CDT Apr 6, 2026-6pm CDT Apr 13, 2026

View Nearby Observations

Detailed Forecast

Tonight
W wind 5 to 10 kt, with gusts as high as 15 kt. Clear. Waves 1 ft or less.
Tuesday
W wind 5 to 10 kt becoming SW in the afternoon. Sunny. Waves 1 ft or less.
Tuesday Night
SW wind 5 to 15 kt becoming S in the evening. Winds could gust as high as 25 kt. A chance of flurries before 11pm, then a chance of snow. Waves 1 to 3 ft.
Wednesday
ESE wind 10 to 15 kt, with gusts as high as 25 kt. Rain, possibly mixed with snow, becoming all rain after 4pm. Waves 3 to 4 ft.
Wednesday Night
SSE wind 10 to 15 kt becoming WSW in the evening. Winds could gust as high as 30 kt. A chance of rain before 4am, then a slight chance of snow. Waves 3 to 4 ft.
Thursday
W wind 10 to 15 kt, with gusts as high as 30 kt. A slight chance of snow before 7am. Waves 2 to 3 ft.
Thursday Night
Variable winds 5 kt or less. Mostly cloudy. Waves 1 ft or less.
Friday
Variable winds 5 kt or less. Partly sunny. Waves 1 ft or less.
Friday Night
Variable winds 5 kt or less. Mostly clear. Waves 1 ft or less.

Note...Wave height forecasts are for ice free areas.


*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: 8:07 pm CDT Apr 6, 2026
Forecast Valid: 10pm CDT Apr 6, 2026-6pm CDT Apr 13, 2026
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