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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: 3:47 pm CDT Apr 26, 2026
Forecast Valid: 4pm CDT Apr 26, 2026-6pm CDT May 3, 2026

Late Afternoon

Variable winds 5 kt or less. A slight chance of showers. Waves 1 ft or less.

Tonight

NE wind 5 to 10 kt, with gusts as high as 20 kt. A slight chance of showers after 5am. Waves 1 ft or less.

Monday

ENE wind 10 to 15 kt, with gusts as high as 20 kt. Showers, mainly after 11am. Waves 1 ft building to 4 ft.

Monday Night

NE wind 10 to 15 kt becoming NW after midnight. Winds could gust as high as 30 kt. Showers. Waves 3 to 4 ft.

Tuesday

NW wind 15 to 20 kt, with gusts as high as 35 kt. A chance of showers before 1pm. Waves 1 to 3 ft.

Tuesday Night

NW wind 5 to 10 kt, with gusts as high as 20 kt. Partly cloudy. Waves 1 ft or less.

Wednesday

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

Wednesday Night

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

Thursday

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

*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.