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Marquette, MI Local Forecast Office

Copper Harbor MI

Marine Point Forecast

[NOTICE]

Tonight
Low: 54 °F
W 15kt
< 1ft
Saturday
High: 65 °F
NNW 15kt
1-2ft
Saturday Night
Low: 59 °F
Light Wind
< 1ft
Sunday
High: 78 °F
Light Wind
< 1ft
Sunday Night
Low: 62 °F
SW 10kt
< 1ft
Monday
High: 76 °F
SW 15kt
< 1ft
Monday Night
Low: 55 °F
WNW 20kt
2-3ft
Tuesday
High: 67 °F
WNW 20kt
4-5ft
Tuesday Night
Low: 53 °F
NNW 15kt
3-4ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 10:27 pm CDT Jul 17, 2026
Forecast Valid: 10pm CDT Jul 17, 2026-6pm CDT Jul 24, 2026

View Nearby Observations

Detailed Forecast

Tonight

W wind 10 to 15 kt. Areas of smoke. Waves 1 ft or less.

Saturday

NNW wind 10 to 15 kt. Widespread smoke, mainly after 11am. Waves 1 to 2 ft.

Saturday Night

Variable winds 5 kt or less. Widespread smoke. Waves 1 ft or less.

Sunday

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

Sunday Night

SSE wind 5 to 10 kt becoming SW after midnight. Winds could gust as high as 20 kt. A chance of showers and thunderstorms after 1am. Waves 1 ft or less.

Monday

SW wind 10 to 15 kt, with gusts as high as 25 kt. Showers likely, with thunderstorms also possible after 1pm. Waves 1 ft or less.

Monday Night

WNW wind 10 to 20 kt, with gusts as high as 30 kt. A chance of showers before 1am. Waves 2 to 3 ft.

Tuesday

WNW wind around 20 kt, with gusts as high as 35 kt. Partly sunny. Waves 4 to 5 ft.

Tuesday Night

NNW wind around 15 kt, with gusts as high as 25 kt. Mostly cloudy. Waves 3 to 4 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.