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Marquette, MI Local Forecast Office

21NM E Grand Portage MN

Marine Point Forecast

[NOTICE]
    • Today

      Today:SW wind 5 to 10 kt. Sunny. Waves 1 ft or less.

      High: 69 °F

      SW 10kt
      < 1ft

    • Tonight

      Tonight:SW wind 5 to 10 kt. Partly cloudy. Waves 1 ft or less.

      Low: 60 °F

      SW 10kt
      < 1ft

    • Sunday

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

      High: 71 °F

      Light Wind
      < 1ft

    • Sunday Night

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

      Low: 61 °F

      Light Wind
      < 1ft

    • Labor Day

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

      High: 71 °F

      Light Wind
      < 1ft

    • Monday Night

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

      Low: 60 °F

      Light Wind
      < 1ft

    • Tuesday

      Tuesday:SW wind 5 to 10 kt, with gusts as high as 20 kt. Showers likely, mainly after 1pm.   Waves 1 ft or less.

      High: 68 °F

      SW 10kt
      < 1ft

    • Tuesday Night

      Tuesday Night:NW wind 10 to 15 kt becoming N after midnight. Winds could gust as high as 25 kt. Showers likely and possibly a thunderstorm before 1am, then a chance of showers.   Waves 1 ft or less.

      Low: 48 °F

      N 15kt
      < 1ft

    • Wednesday

      Wednesday:N wind around 15 kt, with gusts as high as 30 kt. A chance of showers.   Waves 1 ft or less.

      High: 53 °F

      N 15kt
      < 1ft


High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 5:41 am CDT Aug 30, 2025
Forecast Valid: 7am CDT Aug 30, 2025-6pm CDT Sep 5, 2025

View Nearby Observations

Detailed Forecast

Today
SW wind 5 to 10 kt. Sunny. Waves 1 ft or less.
Tonight
SW wind 5 to 10 kt. Partly cloudy. Waves 1 ft or less.
Sunday
Variable winds 5 kt or less. Sunny. Waves 1 ft or less.
Sunday Night
Variable winds 5 kt or less. Partly cloudy. Waves 1 ft or less.
Labor Day
Variable winds 5 kt or less. Mostly sunny. Waves 1 ft or less.
Monday Night
Variable winds 5 kt or less. Partly cloudy. Waves 1 ft or less.
Tuesday
SW wind 5 to 10 kt, with gusts as high as 20 kt. Showers likely, mainly after 1pm. Waves 1 ft or less.
Tuesday Night
NW wind 10 to 15 kt becoming N after midnight. Winds could gust as high as 25 kt. Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Waves 1 ft or less.
Wednesday
N wind around 15 kt, with gusts as high as 30 kt. A chance of showers. 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: 47.92°N 89.17°W
Last Update: 5:41 am CDT Aug 30, 2025
Forecast Valid: 7am CDT Aug 30, 2025-6pm CDT Sep 5, 2025
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