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Marquette, MI Local Forecast Office

21NM E Grand Portage MN

Marine Point Forecast

[NOTICE]
    • Tonight

      Tonight:NNE wind 5 to 10 kt, with gusts as high as 15 kt. A slight chance of snow showers after 1am.   Waves 1 ft or less.

      Low: 6 °F

      NNE 10kt
      < 1ft

    • Sunday

      Sunday:NE wind 5 to 10 kt becoming N in the afternoon. Snow showers.   Waves 1 ft or less.

      High: 14 °F

      NE 10kt
      < 1ft

    • Sunday Night

      Sunday Night:N wind 10 to 15 kt increasing to 20 to 25 kt in the evening. Winds could gust as high as 30 kt. Snow showers likely with areas of blowing snow before 2am, then patchy blowing snow and a slight chance of snow showers between 2am and 5am.   Waves 1 ft or less.

      Low: -7 °F

      ⇑N 25kt
      < 1ft

    • M.L.King Day

      M.L.King Day:NNW wind 10 to 20 kt, with gusts as high as 30 kt. Areas of blowing snow before noon, then a slight chance of snow showers after noon.   Waves 1 ft or less.

      High: 0 °F

      NNW 20kt
      < 1ft

    • Monday Night

      Monday Night:WNW wind around 10 kt, with gusts as high as 25 kt. Mostly cloudy. Waves 1 ft or less.

      Low: -4 °F

      WNW 10kt
      < 1ft

    • Tuesday

      Tuesday:W wind around 10 kt, with gusts as high as 20 kt. Mostly cloudy. Waves 1 ft or less.

      High: 10 °F

      W 10kt
      < 1ft

    • Tuesday Night

      Tuesday Night:W wind around 10 kt becoming NW after midnight. Winds could gust as high as 20 kt. Cloudy. Waves 1 ft or less.

      Low: 5 °F

      W 10kt
      < 1ft

    • Wednesday

      Wednesday:NW wind around 10 kt, with gusts as high as 20 kt. Cloudy. Waves 1 ft or less.

      High: 9 °F

      NW 10kt
      < 1ft

    • Wednesday Night

      Wednesday Night:NW wind around 10 kt, with gusts as high as 25 kt. Mostly cloudy. Waves 1 ft or less.

      Low: -3 °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: 10:38 pm CST Jan 17, 2026
Forecast Valid: 10pm CST Jan 17, 2026-6pm CST Jan 24, 2026

View Nearby Observations

Detailed Forecast

Tonight
NNE wind 5 to 10 kt, with gusts as high as 15 kt. A slight chance of snow showers after 1am. Waves 1 ft or less.
Sunday
NE wind 5 to 10 kt becoming N in the afternoon. Snow showers. Waves 1 ft or less.
Sunday Night
N wind 10 to 15 kt increasing to 20 to 25 kt in the evening. Winds could gust as high as 30 kt. Snow showers likely with areas of blowing snow before 2am, then patchy blowing snow and a slight chance of snow showers between 2am and 5am. Waves 1 ft or less.
M.L.King Day
NNW wind 10 to 20 kt, with gusts as high as 30 kt. Areas of blowing snow before noon, then a slight chance of snow showers after noon. Waves 1 ft or less.
Monday Night
WNW wind around 10 kt, with gusts as high as 25 kt. Mostly cloudy. Waves 1 ft or less.
Tuesday
W wind around 10 kt, with gusts as high as 20 kt. Mostly cloudy. Waves 1 ft or less.
Tuesday Night
W wind around 10 kt becoming NW after midnight. Winds could gust as high as 20 kt. Cloudy. Waves 1 ft or less.
Wednesday
NW wind around 10 kt, with gusts as high as 20 kt. Cloudy. Waves 1 ft or less.
Wednesday Night
NW wind around 10 kt, with gusts as high as 25 kt. Mostly cloudy. 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: 10:38 pm CST Jan 17, 2026
Forecast Valid: 10pm CST Jan 17, 2026-6pm CST Jan 24, 2026
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