Hazardous Weather Conditions

For More Weather Information:

Duluth, MN Local Forecast Office

10NM SW Grand Portage MN

Marine Point Forecast

[NOTICE]
    • Today

      Today:Variable winds 5 kt or less. A chance of showers, mainly after 4pm.  Patchy fog between 9am and 10am.  Waves 1 ft or less.

      High: 64 °F

      Light Wind
      < 1ft

    • Tonight

      Tonight:WSW wind 5 to 10 kt becoming NNW after midnight. A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 1am.   Waves 1 ft or less.

      Low: 54 °F

      NNW 10kt
      < 1ft

    • Saturday

      Saturday:NNW wind around 10 kt, with gusts as high as 15 kt. Mostly sunny. Waves 1 ft or less.

      High: 67 °F

      NNW 10kt
      < 1ft

    • Saturday Night

      Saturday Night:N wind 5 to 10 kt. Partly cloudy. Waves 1 ft or less.

      Low: 52 °F

      N 10kt
      < 1ft

    • Sunday

      Sunday:N wind 5 to 10 kt becoming S in the afternoon. Sunny. Waves 1 ft or less.

      High: 63 °F

      SSW 10kt
      < 1ft

    • Sunday Night

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

      Low: 50 °F

      Light Wind
      < 1ft

    • Monday

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

      High: 64 °F

      Light Wind
      < 1ft

    • Monday Night

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

      Low: 54 °F

      Light Wind
      < 1ft

    • Tuesday

      Tuesday:S wind 5 to 10 kt. A chance of showers, with thunderstorms also possible after 1pm.   Waves 1 ft or less.

      High: 66 °F

      S 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: 6:01 am CDT Aug 21, 2026
Forecast Valid: 7am CDT Aug 21, 2026-6pm CDT Aug 27, 2026

View Nearby Observations

Detailed Forecast

Today
Variable winds 5 kt or less. A chance of showers, mainly after 4pm. Patchy fog between 9am and 10am. Waves 1 ft or less.
Tonight
WSW wind 5 to 10 kt becoming NNW after midnight. A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 1am. Waves 1 ft or less.
Saturday
NNW wind around 10 kt, with gusts as high as 15 kt. Mostly sunny. Waves 1 ft or less.
Saturday Night
N wind 5 to 10 kt. Partly cloudy. Waves 1 ft or less.
Sunday
N wind 5 to 10 kt becoming S in the afternoon. Sunny. Waves 1 ft or less.
Sunday Night
Variable winds 5 kt or less. Partly 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 cloudy. Waves 1 ft or less.
Tuesday
S wind 5 to 10 kt. A chance of showers, with thunderstorms also possible after 1pm. 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: 6:01 am CDT Aug 21, 2026
Forecast Valid: 7am CDT Aug 21, 2026-6pm CDT Aug 27, 2026
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