For More Weather Information:

3NM N Copper Harbor MI

[NOTICE]

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

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

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:

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.