Hazardous Weather Conditions

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Duluth, MN Local Forecast Office

10NM SW Grand Portage MN

Marine Point Forecast

[NOTICE]
    • Today

      Today:NNW wind 5 to 15 kt becoming SSW in the afternoon. Winds could gust as high as 20 kt. Widespread smoke, mainly between 10am and 2pm.  Waves 1 ft or less.

      High: 70 °F

      NNW 15kt
      < 1ft

    • Tonight

      Tonight:Variable winds 5 kt or less. Patchy smoke.  Waves 1 ft or less.

      Low: 50 °F

      Light Wind
      < 1ft

    • Sunday

      Sunday:Variable winds less than 5 kt becoming SSW 5 to 10 kt in the morning. Areas of smoke.  Waves 1 ft or less.

      High: 69 °F

      ⇑SSW 10kt
      < 1ft

    • Sunday Night

      Sunday Night:SW wind 5 to 10 kt, with gusts as high as 15 kt. A slight chance of showers and thunderstorms before 1am, then showers likely between 1am and 4am, then showers likely and possibly a thunderstorm after 4am.   Waves 1 ft or less.

      Low: 52 °F

      SW 10kt
      < 1ft

    • Monday

      Monday:SW wind around 15 kt, with gusts as high as 25 kt. A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm.   Waves 1 to 3 ft.

      High: 73 °F

      SW 15kt
      1-3ft

    • Monday Night

      Monday Night:WNW wind 10 to 15 kt, with gusts as high as 20 kt. A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am.   Waves 1 to 2 ft.

      Low: 52 °F

      WNW 15kt
      1-2ft

    • Tuesday

      Tuesday:NW wind 15 to 20 kt, with gusts as high as 30 kt. A slight chance of showers.   Waves 1 ft or less.

      High: 68 °F

      NW 20kt
      < 1ft

    • Tuesday Night

      Tuesday Night:NNW wind around 10 kt, with gusts as high as 20 kt. Partly cloudy. Waves 1 ft or less.

      Low: 48 °F

      NNW 10kt
      < 1ft

    • Wednesday

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

      High: 64 °F

      W 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: 3:57 am CDT Jul 18, 2026
Forecast Valid: 5am CDT Jul 18, 2026-6pm CDT Jul 24, 2026

View Nearby Observations

Detailed Forecast

Today
NNW wind 5 to 15 kt becoming SSW in the afternoon. Winds could gust as high as 20 kt. Widespread smoke, mainly between 10am and 2pm. Waves 1 ft or less.
Tonight
Variable winds 5 kt or less. Patchy smoke. Waves 1 ft or less.
Sunday
Variable winds less than 5 kt becoming SSW 5 to 10 kt in the morning. Areas of smoke. Waves 1 ft or less.
Sunday Night
SW wind 5 to 10 kt, with gusts as high as 15 kt. A slight chance of showers and thunderstorms before 1am, then showers likely between 1am and 4am, then showers likely and possibly a thunderstorm after 4am. Waves 1 ft or less.
Monday
SW wind around 15 kt, with gusts as high as 25 kt. A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Waves 1 to 3 ft.
Monday Night
WNW wind 10 to 15 kt, with gusts as high as 20 kt. A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am. Waves 1 to 2 ft.
Tuesday
NW wind 15 to 20 kt, with gusts as high as 30 kt. A slight chance of showers. Waves 1 ft or less.
Tuesday Night
NNW wind around 10 kt, with gusts as high as 20 kt. Partly cloudy. Waves 1 ft or less.
Wednesday
NNW wind 5 to 10 kt becoming W in the afternoon. Winds could gust as high as 15 kt. 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: 3:57 am CDT Jul 18, 2026
Forecast Valid: 5am CDT Jul 18, 2026-6pm CDT Jul 24, 2026
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