Hazardous Weather Conditions

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Duluth, MN Local Forecast Office

10NM SW Grand Portage MN

Marine Point Forecast

[NOTICE]
    • Monday

      Monday:N wind 5 to 10 kt becoming S in the afternoon. Mostly sunny. Waves 1 ft or less.

      High: 58 °F

      S 10kt
      < 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. Mostly sunny. Waves 1 ft or less.

      High: 58 °F

      Light Wind
      < 1ft

    • Tuesday Night

      Tuesday Night:Variable winds 5 kt or less. A slight chance of showers before 10pm, then a slight chance of showers and thunderstorms between 10pm and 1am, then showers likely and possibly a thunderstorm after 1am.   Waves 1 ft or less.

      Low: 43 °F

      Light Wind
      < 1ft

    • Wednesday

      Wednesday:NE wind around 10 kt, with gusts as high as 15 kt. A chance of showers, mainly before 1pm.  Patchy fog before 9am.  Waves 1 ft or less.

      High: 54 °F

      NE 10kt
      < 1ft

    • Wednesday Night

      Wednesday Night:N wind 5 to 10 kt, with gusts as high as 15 kt. A slight chance of showers.   Waves 1 ft or less.

      Low: 43 °F

      N 10kt
      < 1ft

    • Thursday

      Thursday:Variable winds 5 kt or less. A slight chance of showers and thunderstorms after 1pm.   Waves 1 ft or less.

      High: 59 °F

      Light Wind
      < 1ft

    • Thursday Night

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

      Low: 45 °F

      Light Wind
      < 1ft

    • Friday

      Friday:Variable winds 5 kt or less. Mostly 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: 3:16 am CDT Jun 22, 2026
Forecast Valid: 4am CDT Jun 22, 2026-6pm CDT Jun 28, 2026

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Detailed Forecast

Monday
N wind 5 to 10 kt becoming S in the afternoon. Mostly 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. Mostly sunny. Waves 1 ft or less.
Tuesday Night
Variable winds 5 kt or less. A slight chance of showers before 10pm, then a slight chance of showers and thunderstorms between 10pm and 1am, then showers likely and possibly a thunderstorm after 1am. Waves 1 ft or less.
Wednesday
NE wind around 10 kt, with gusts as high as 15 kt. A chance of showers, mainly before 1pm. Patchy fog before 9am. Waves 1 ft or less.
Wednesday Night
N wind 5 to 10 kt, with gusts as high as 15 kt. A slight chance of showers. Waves 1 ft or less.
Thursday
Variable winds 5 kt or less. A slight chance of showers and thunderstorms after 1pm. Waves 1 ft or less.
Thursday Night
Variable winds 5 kt or less. Partly cloudy. Waves 1 ft or less.
Friday
Variable winds 5 kt or less. Mostly 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 89.86°W
Last Update: 3:16 am CDT Jun 22, 2026
Forecast Valid: 4am CDT Jun 22, 2026-6pm CDT Jun 28, 2026
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