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10NM SW Grand Portage MN

[NOTICE]

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Last Update: 10:01 pm CDT Mar 19, 2026
Forecast Valid: 10pm CDT Mar 19, 2026-6pm CDT Mar 26, 2026

Tonight

ESE wind 5 to 10 kt becoming NW after midnight. Snow likely, mainly before 11pm. Patchy fog after 2am. Waves 1 ft or less.

Friday

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

Friday Night

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

Saturday

E wind 5 to 10 kt, with gusts as high as 15 kt. A chance of rain and snow before 10am, then a chance of snow. Waves 1 ft or less.

Saturday Night

NE wind 10 to 15 kt, with gusts as high as 25 kt. A chance of snow. Waves 1 ft or less.

Sunday

NE wind 10 to 15 kt, with gusts as high as 25 kt. A chance of snow. Waves 1 ft or less.

Sunday Night

Variable winds 5 kt or less. A slight chance of snow before 1am. Waves 1 ft or less.

Monday

NW wind 5 to 10 kt becoming SSW in the afternoon. Mostly sunny. Waves 1 ft or less.

Monday Night

SSW wind 10 to 15 kt becoming WSW after midnight. Winds could gust as high as 25 kt. A chance of snow. Waves 1 ft or less.

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.