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Marquette, MI Local Forecast Office

3NM N Copper Harbor MI

Marine Point Forecast

[NOTICE]
    • Thursday

      Thursday:Variable winds 5 kt or less. Widespread dense fog, mainly between 7am and 9am.  Waves 1 ft or less.

      High: 39 °F

      Light Wind
      < 1ft

    • Thursday Night

      Thursday Night:SSE wind 5 to 10 kt. Patchy dense fog.  Waves 1 ft or less.

      Low: 35 °F

      SSE 10kt
      < 1ft

    • Friday

      Friday:SSE wind 15 to 20 kt, with gusts as high as 25 kt. A slight chance of showers after 1pm.  Patchy fog before 10am.  Waves 1 to 2 ft.

      High: 47 °F

      SSE 20kt
      1-2ft

    • Friday Night

      Friday Night:S wind 15 to 20 kt becoming W after midnight. Winds could gust as high as 30 kt. Showers and possibly a thunderstorm.   Waves 2 ft building to 5 ft.

      Low: 30 °F

      W 20kt
      Waves Building5ft

    • Saturday

      Saturday:WNW wind around 25 kt, with gusts as high as 35 kt. A slight chance of snow showers before 1pm.   Waves 7 to 8 ft.

      High: 33 °F

      WNW 25kt
      7-8ft

    • Saturday Night

      Saturday Night:NW wind around 25 kt, with gusts as high as 35 kt. Mostly cloudy. Waves 7 to 9 ft.

      Low: 26 °F

      NW 25kt
      7-9ft

    • Sunday

      Sunday:NW wind 15 to 20 kt, with gusts as high as 30 kt. Partly sunny. Waves 6 ft subsiding to 3 ft.

      High: 33 °F

      NW 20kt
      6ftWaves Subsiding

    • Sunday Night

      Sunday Night:NW wind 10 to 15 kt. Mostly clear. Waves 2 to 3 ft.

      Low: 30 °F

      NW 15kt
      2-3ft

    • Monday

      Monday:SSW wind around 10 kt becoming SE in the afternoon. Mostly sunny. Waves 1 to 2 ft.

      High: 41 °F

      SE 10kt
      1-2ft


High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 2:37 am CDT Apr 16, 2026
Forecast Valid: 3am CDT Apr 16, 2026-6pm CDT Apr 22, 2026

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Detailed Forecast

Thursday
Variable winds 5 kt or less. Widespread dense fog, mainly between 7am and 9am. Waves 1 ft or less.
Thursday Night
SSE wind 5 to 10 kt. Patchy dense fog. Waves 1 ft or less.
Friday
SSE wind 15 to 20 kt, with gusts as high as 25 kt. A slight chance of showers after 1pm. Patchy fog before 10am. Waves 1 to 2 ft.
Friday Night
S wind 15 to 20 kt becoming W after midnight. Winds could gust as high as 30 kt. Showers and possibly a thunderstorm. Waves 2 ft building to 5 ft.
Saturday
WNW wind around 25 kt, with gusts as high as 35 kt. A slight chance of snow showers before 1pm. Waves 7 to 8 ft.
Saturday Night
NW wind around 25 kt, with gusts as high as 35 kt. Mostly cloudy. Waves 7 to 9 ft.
Sunday
NW wind 15 to 20 kt, with gusts as high as 30 kt. Partly sunny. Waves 6 ft subsiding to 3 ft.
Sunday Night
NW wind 10 to 15 kt. Mostly clear. Waves 2 to 3 ft.
Monday
SSW wind around 10 kt becoming SE in the afternoon. Mostly sunny. Waves 1 to 2 ft.

*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: 47.5°N 87.89°W
Last Update: 2:37 am CDT Apr 16, 2026
Forecast Valid: 3am CDT Apr 16, 2026-6pm CDT Apr 22, 2026
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