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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: 12:06 am CDT Mar 23, 2026
Forecast Valid: 1am CDT Mar 23, 2026-6pm CDT Mar 29, 2026

Monday

NW wind 5 to 15 kt becoming SW in the afternoon. Sunny. Waves 1 ft or less.

Monday Night

SSW wind around 10 kt becoming W after midnight. Winds could gust as high as 20 kt. A slight chance of snow between 10pm and 4am. Waves 1 ft or less.

Tuesday

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

Tuesday Night

E wind 5 to 10 kt becoming NE after midnight. A slight chance of snow after 1am. Patchy dense fog after 3am. Waves 1 ft or less.

Wednesday

NE wind around 10 kt, with gusts as high as 15 kt. A chance of snow, mainly before 1pm. Areas of dense fog before 11am. Waves 1 ft or less.

Wednesday Night

E wind 10 to 15 kt. Snow likely, mainly after 1am. Waves 1 ft or less.

Thursday

ENE wind 10 to 15 kt becoming N in the afternoon. A chance of snow before 1pm. Waves 1 ft or less.

Thursday Night

N wind 10 to 15 kt, with gusts as high as 25 kt. Partly cloudy. Waves 1 ft or less.

Friday

W wind around 10 kt, with gusts as high as 20 kt. Sunny. 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.