For More Weather Information:

4NM E Isle Royale National Park MI

[NOTICE]

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Last Update: 3:17 pm CDT Sep 1, 2026
Forecast Valid: 4pm CDT Sep 1, 2026-6pm CDT Sep 7, 2026

This Afternoon

WSW wind around 15 kt. Sunny. Waves around 2 ft.

Tonight

W wind around 10 kt. Partly cloudy. Waves 1 ft or less.

Wednesday

Variable winds 5 kt or less. Mostly cloudy, then gradually becoming sunny. Waves 1 ft or less.

Wednesday Night

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

Thursday

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

Thursday Night

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

Friday

E wind around 10 kt. Partly sunny. Waves 1 ft or less.

Friday Night

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

Saturday

ESE wind 5 to 10 kt. Partly 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.