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Marquette, MI Local Forecast Office

3NM N Copper Harbor MI

Marine Point Forecast

[NOTICE]

Today
High: 54 °F
W 15kt
2-3ft
Tonight
Low: 38 °F
NW 10kt
1-2ft
Sunday
High: 43 °F
E 15kt
1-2ft
Sunday Night
Low: 42 °F
E 20kt
6ft
Monday
High: 47 °F
NNE 15kt
3-4ft
Monday Night
Low: 39 °F
NE 20kt
7ft
Tuesday
High: 47 °F
NNW 25kt
8-10ft
Tuesday Night
Low: 35 °F
NNW 20kt
9ft
Wednesday
High: 42 °F
NW 20kt
5ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 9:14 am CDT May 16, 2026
Forecast Valid: 10am CDT May 16, 2026-6pm CDT May 22, 2026

View Nearby Observations

Detailed Forecast

Today

W wind 10 to 15 kt, with gusts as high as 25 kt. Sunny. Waves 2 to 3 ft.

Tonight

NW wind 5 to 10 kt becoming NE after midnight. Mostly clear. Waves 1 to 2 ft.

Sunday

E wind 10 to 15 kt. Showers likely after 1pm. Waves 1 to 2 ft.

Sunday Night

E wind 15 to 20 kt, with gusts as high as 25 kt. Showers and possibly a thunderstorm. Waves 3 ft building to 6 ft.

Monday

SSE wind 10 to 15 kt becoming NNW in the morning. Showers likely and possibly a thunderstorm before 7am, then showers likely between 7am and 1pm, then showers and possibly a thunderstorm after 1pm. Waves 3 to 4 ft.

Monday Night

NE wind 15 to 20 kt. Showers and possibly a thunderstorm. Waves 4 ft building to 7 ft.

Tuesday

ENE wind 20 to 25 kt becoming NW in the afternoon. Showers likely before 1pm. Waves 8 to 10 ft.

Tuesday Night

NNW wind around 20 kt, with gusts as high as 30 kt. Cloudy. Waves 9 ft subsiding to 6 ft.

Wednesday

NW wind 10 to 20 kt, with gusts as high as 30 kt. Partly sunny. Waves 5 ft subsiding to 2 ft.

*Notices:

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.
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.