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Marquette, MI Local Forecast Office

21NM E Grand Portage MN

Marine Point Forecast

[NOTICE]
    • This Afternoon

      This Afternoon:S wind around 10 kt becoming SE. Mostly cloudy. Waves 1 ft or less.

      High: 64 °F

      S 10kt
      < 1ft

    • Tonight

      Tonight:SE wind 10 to 15 kt becoming SSW after midnight. Winds could gust as high as 30 kt. Showers, mainly before 3am.   Waves 1 ft or less.

      Low: 56 °F

      S 15kt
      < 1ft

    • Tuesday

      Tuesday:SW wind 15 to 25 kt becoming W in the afternoon. Winds could gust as high as 40 kt. Cloudy through mid morning, then gradual clearing. Waves 1 ft or less.

      High: 66 °F

      WSW 25kt
      < 1ft

    • Tuesday Night

      Tuesday Night:W wind 5 to 10 kt, with gusts as high as 20 kt. Mostly clear. Waves 1 ft or less.

      Low: 53 °F

      W 10kt
      < 1ft

    • Wednesday

      Wednesday:Variable winds 5 kt or less. Increasing clouds. Waves 1 ft or less.

      High: 63 °F

      Light Wind
      < 1ft

    • Wednesday Night

      Wednesday Night:Variable winds 5 kt or less. Cloudy, then gradually becoming partly cloudy. Waves 1 ft or less.

      Low: 57 °F

      Light Wind
      < 1ft

    • Thursday

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

      High: 67 °F

      Light Wind
      < 1ft

    • Thursday Night

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

      Low: 57 °F

      Light Wind
      < 1ft

    • Friday

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

      High: 70 °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: 12:17 pm CDT Sep 14, 2026
Forecast Valid: 1pm CDT Sep 14, 2026-6pm CDT Sep 20, 2026

View Nearby Observations

Detailed Forecast

This Afternoon
S wind around 10 kt becoming SE. Mostly cloudy. Waves 1 ft or less.
Tonight
SE wind 10 to 15 kt becoming SSW after midnight. Winds could gust as high as 30 kt. Showers, mainly before 3am. Waves 1 ft or less.
Tuesday
SW wind 15 to 25 kt becoming W in the afternoon. Winds could gust as high as 40 kt. Cloudy through mid morning, then gradual clearing. Waves 1 ft or less.
Tuesday Night
W wind 5 to 10 kt, with gusts as high as 20 kt. Mostly clear. Waves 1 ft or less.
Wednesday
Variable winds 5 kt or less. Increasing clouds. Waves 1 ft or less.
Wednesday Night
Variable winds 5 kt or less. Cloudy, then gradually becoming partly cloudy. Waves 1 ft or less.
Thursday
Variable winds 5 kt or less. Mostly sunny. 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. Partly 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: 47.92°N 89.17°W
Last Update: 12:17 pm CDT Sep 14, 2026
Forecast Valid: 1pm CDT Sep 14, 2026-6pm CDT Sep 20, 2026
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