For More Weather Information:

21NM E Grand Marais MI

[NOTICE]

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Last Update: 10:07 pm CDT Aug 23, 2026
Forecast Valid: 11pm CDT Aug 23, 2026-6pm CDT Aug 30, 2026

Overnight

NNW wind around 20 kt, with gusts as high as 25 kt. Mostly cloudy. Waves around 6 ft.

Monday

NW wind 15 to 20 kt. Partly sunny. Waves 4 to 5 ft.

Monday Night

WNW wind 5 to 15 kt. Partly cloudy. Waves 1 to 3 ft.

Tuesday

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

Tuesday Night

SSE wind 10 to 15 kt. Showers likely, with thunderstorms also possible after 4am. Waves 1 ft or less.

Wednesday

SSE wind 10 to 15 kt becoming SSW in the afternoon. Showers, with thunderstorms also possible after 1pm. Waves 1 ft or less.

Wednesday Night

W wind 5 to 10 kt. A chance of showers before 1am. Waves 1 to 2 ft.

Thursday

NW wind 15 to 20 kt. Partly sunny. Waves 3 to 5 ft.

Thursday Night

NNW wind 10 to 15 kt. Partly cloudy. Waves 2 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.