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Marquette, MI Local Forecast Office

8NM E Copper Harbor MI

Marine Point Forecast

[NOTICE]

Tonight
Low: 29 °F
ENE 30kt
12ft

Gale Warning
Friday
High: 34 °F
N 25kt
9ft

Small Craft Advisory
Friday Night
Low: 31 °F
⇑E 25kt
9ft
Saturday
High: 33 °F
E 30kt⇓
10ft
Saturday Night
Low: 28 °F
⇑NW 25kt
9ft
Sunday
High: 34 °F
WNW 25kt⇓
9ft
Sunday Night
Low: 26 °F
NNW 15kt
1-2ft
Monday
High: 31 °F
N 20kt
4-6ft
Monday Night
Low: 23 °F
N 25kt
5-6ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 6:17 pm CDT Apr 2, 2026
Forecast Valid: 6pm CDT Apr 2, 2026-6pm CDT Apr 9, 2026

View Nearby Observations

Detailed Forecast

Tonight

E wind 20 to 30 kt becoming NNE after midnight. Winds could gust as high as 40 kt. Snow before 10pm, then snow and sleet. The snow could be heavy at times. Waves 12 ft subsiding to 9 ft.

Friday

N wind 15 to 25 kt. Mostly cloudy. Waves 9 ft subsiding to 4 ft.

Friday Night

E wind 15 to 20 kt increasing to 20 to 25 kt after midnight. Winds could gust as high as 40 kt. A slight chance of snow and sleet before 10pm, then a slight chance of rain, snow, and sleet between 10pm and 1am, then snow and sleet after 1am. Waves 4 ft building to 9 ft.

Saturday

E wind 25 to 30 kt decreasing to 15 to 20 kt in the afternoon. Winds could gust as high as 40 kt. Snow and sleet before 1pm, then rain and snow showers. The sleet could be heavy at times. Waves 10 ft subsiding to 7 ft.

Saturday Night

NNE wind 15 to 20 kt becoming NW 20 to 25 kt after midnight. Winds could gust as high as 40 kt. Snow showers likely, possibly mixed with rain, becoming all snow after 10pm. Waves 6 ft building to 9 ft.

Sunday

WNW wind 20 to 25 kt decreasing to 15 to 20 kt in the afternoon. Winds could gust as high as 35 kt. Partly sunny. Waves 9 ft subsiding to 4 ft.

Sunday Night

W wind 10 to 15 kt becoming NNW after midnight. Mostly cloudy. Waves 1 to 2 ft.

Monday

N wind around 20 kt, with gusts as high as 25 kt. A chance of snow showers. Waves 4 to 6 ft.

Monday Night

N wind 15 to 25 kt. Widespread freezing spray between midnight and 2am. Mostly cloudy. Waves 5 to 6 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.