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Duluth, MN Local Forecast Office

Grand Marais MN

Marine Point Forecast

[NOTICE]

This Afternoon
High: 59 °F
Light Wind
1ft

Small Craft Advisory
Tonight
Low: 50 °F
W 10kt
< 1ft
Wednesday
High: 58 °F
W 10kt
< 1ft
Wednesday Night
Low: 46 °F
WNW 10kt
< 1ft
Thursday
High: 55 °F
WNW 10kt
< 1ft
Thursday Night
Low: 46 °F
Light Wind
< 1ft
Friday
High: 54 °F
Light Wind
< 1ft
Friday Night
Low: 49 °F
E 10kt
< 1ft
Saturday
High: 64 °F
SSE 10kt
2-3ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 1:26 pm CDT Oct 6, 2026
Forecast Valid: 2pm CDT Oct 6, 2026-6pm CDT Oct 12, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

Variable winds 5 kt or less. Winds could gust as high as 15 kt. Mostly sunny. Waves around 1 ft.

Tonight

W wind 5 to 10 kt, with gusts as high as 15 kt. Mostly cloudy, then gradually becoming clear. Waves 1 ft or less.

Wednesday

W wind 5 to 10 kt, with gusts as high as 25 kt. A chance of sprinkles between 4pm and 5pm, then a slight chance of showers after 5pm. Waves 1 ft or less.

Wednesday Night

WNW wind around 10 kt, with gusts as high as 20 kt. A slight chance of showers before 7pm, then a chance of sprinkles between 7pm and 8pm. Waves 1 ft or less.

Thursday

WNW wind around 10 kt, with gusts as high as 15 kt. Mostly sunny. Waves 1 ft or less.

Thursday Night

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

Friday

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

Friday Night

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

Saturday

SSE wind around 10 kt. Partly sunny. Waves 2 to 3 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.