For More Weather Information:

Copper Harbor MI

[NOTICE]

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Last Update: 3:17 am CDT Sep 18, 2026
Forecast Valid: 8am CDT Sep 18, 2026-6pm CDT Sep 24, 2026

Today

ESE wind around 10 kt. Mostly sunny. Waves 1 to 2 ft.

Tonight

ESE wind around 10 kt becoming S after midnight. Partly cloudy. Waves 1 ft or less.

Saturday

Variable winds 5 kt or less. Sunny. Waves 1 ft or less.

Saturday Night

Variable winds less than 5 kt becoming NNE 5 to 10 kt after midnight. Mostly cloudy. Waves 1 ft or less.

Sunday

NNE wind 15 to 20 kt, with gusts as high as 30 kt. Mostly sunny. Waves 3 to 4 ft.

Sunday Night

NE wind 10 to 15 kt becoming E after midnight. Mostly cloudy. Waves 1 to 2 ft.

Monday

E wind around 10 kt, with gusts as high as 20 kt. Partly sunny. Waves around 2 ft.

Monday Night

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

Tuesday

E wind 5 to 10 kt. Sunny. Waves 1 ft or less.

*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.