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Duluth, MN Local Forecast Office

12NM ENE Grand Marais MN

Marine Point Forecast

[NOTICE]

Tonight
Low: 37 °F
Light Wind
< 1ft
Wednesday
High: 41 °F
Light Wind
< 1ft
Wednesday Night
Low: 35 °F
Light Wind
< 1ft
Thursday
High: 44 °F
Light Wind
< 1ft
Thursday Night
Low: 36 °F
Light Wind
< 1ft
Friday
High: 47 °F
ENE 10kt
1-2ft
Friday Night
Low: 33 °F
NNW 15kt
2-3ft
Saturday
High: 36 °F
WNW 15kt
1-2ft
Saturday Night
Low: 24 °F
WNW 20kt
1ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 2:01 pm CDT Apr 14, 2026
Forecast Valid: 4pm CDT Apr 14, 2026-6pm CDT Apr 21, 2026

View Nearby Observations

Detailed Forecast

Tonight

Variable winds 5 kt or less. Patchy dense fog between 7pm and 8pm, then Patchy dense fog between 9pm and 11pm, then Widespread dense fog, mainly after 3am. Waves 1 ft or less.

Wednesday

Variable winds 5 kt or less. Widespread dense fog before 9am. Waves 1 ft or less.

Wednesday Night

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

Thursday

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

Thursday Night

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

Friday

ENE wind 5 to 10 kt. A chance of rain after 1pm. Waves 1 to 2 ft.

Friday Night

ENE wind 10 to 15 kt becoming NNW after midnight. Winds could gust as high as 30 kt. Rain and possibly a thunderstorm before 1am, then rain likely. Waves 2 to 3 ft.

Saturday

WNW wind around 15 kt, with gusts as high as 30 kt. A chance of rain before 10am, then a chance of rain and snow between 10am and 1pm, then a chance of snow after 1pm. Waves 1 to 2 ft.

Saturday Night

WNW wind 15 to 20 kt, with gusts as high as 35 kt. A chance of snow. Waves around 1 ft.

Note...Wave height forecasts are for ice free areas.

*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.