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Marquette, MI Local Forecast Office

21NM E Grand Portage MN

Marine Point Forecast

[NOTICE]
    • Overnight

      Overnight:SSW wind around 10 kt, with gusts as high as 20 kt. Showers and possibly a thunderstorm before 3am, then a chance of showers and thunderstorms between 3am and 4am, then a chance of showers after 4am.   Waves 1 ft or less.

      Low: 61 °F

      SSW 10kt
      < 1ft

    • Saturday

      Saturday:W wind 10 to 15 kt, with gusts as high as 25 kt. A chance of showers before 7am.   Waves 1 ft or less.

      High: 67 °F

      W 15kt
      < 1ft

    • Saturday Night

      Saturday Night:WNW wind around 10 kt, with gusts as high as 20 kt. Mostly cloudy. Waves 1 ft or less.

      Low: 55 °F

      WNW 10kt
      < 1ft

    • Sunday

      Sunday:WNW wind around 10 kt. Mostly sunny. Waves 1 ft or less.

      High: 60 °F

      WNW 10kt
      < 1ft

    • Sunday Night

      Sunday Night:NW wind 5 to 10 kt. Mostly clear. Waves 1 ft or less.

      Low: 55 °F

      NW 10kt
      < 1ft

    • Monday

      Monday:Variable winds less than 5 kt becoming S 5 to 10 kt in the morning. A chance of showers after 1pm.   Waves 1 ft or less.

      High: 64 °F

      ⇑S 10kt
      < 1ft

    • Monday Night

      Monday Night:SE wind around 15 kt becoming SW after midnight. Winds could gust as high as 30 kt. Showers, mainly before 1am.   Waves 1 ft or less.

      Low: 56 °F

      S 15kt
      < 1ft

    • Tuesday

      Tuesday:W wind around 15 kt, with gusts as high as 25 kt. Mostly sunny. Waves 1 ft or less.

      High: 68 °F

      W 15kt
      < 1ft

    • Tuesday Night

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

      Low: 52 °F

      NW 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: 11:22 pm CDT Sep 11, 2026
Forecast Valid: 12am CDT Sep 12, 2026-6pm CDT Sep 18, 2026

View Nearby Observations

Detailed Forecast

Overnight
SSW wind around 10 kt, with gusts as high as 20 kt. Showers and possibly a thunderstorm before 3am, then a chance of showers and thunderstorms between 3am and 4am, then a chance of showers after 4am. Waves 1 ft or less.
Saturday
W wind 10 to 15 kt, with gusts as high as 25 kt. A chance of showers before 7am. Waves 1 ft or less.
Saturday Night
WNW wind around 10 kt, with gusts as high as 20 kt. Mostly cloudy. Waves 1 ft or less.
Sunday
WNW wind around 10 kt. Mostly sunny. Waves 1 ft or less.
Sunday Night
NW wind 5 to 10 kt. Mostly clear. Waves 1 ft or less.
Monday
Variable winds less than 5 kt becoming S 5 to 10 kt in the morning. A chance of showers after 1pm. Waves 1 ft or less.
Monday Night
SE wind around 15 kt becoming SW after midnight. Winds could gust as high as 30 kt. Showers, mainly before 1am. Waves 1 ft or less.
Tuesday
W wind around 15 kt, with gusts as high as 25 kt. Mostly sunny. Waves 1 ft or less.
Tuesday Night
NW wind 5 to 10 kt, with gusts as high as 20 kt. Mostly clear. 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: 11:22 pm CDT Sep 11, 2026
Forecast Valid: 12am CDT Sep 12, 2026-6pm CDT Sep 18, 2026
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