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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: 9:36 pm CDT May 10, 2026
Forecast Valid: 11pm CDT May 10, 2026-6pm CDT May 17, 2026

Overnight

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

Monday

Variable winds less than 5 kt becoming SSW 5 to 10 kt in the afternoon. Sunny. Waves 1 ft or less.

Monday Night

Variable winds 5 kt or less. A chance of showers after 4am. Waves 1 to 2 ft.

Tuesday

ESE wind 10 to 15 kt becoming N in the afternoon. Showers, mainly after 7am. Waves 2 to 3 ft.

Tuesday Night

NNW wind around 10 kt, with gusts as high as 20 kt. A slight chance of showers before 1am. Waves 1 to 2 ft.

Wednesday

NNW wind around 10 kt, with gusts as high as 20 kt. Partly sunny. Waves 1 ft or less.

Wednesday Night

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

Thursday

Variable winds less than 5 kt becoming S 5 to 10 kt in the morning. Mostly sunny. Waves 1 ft or less.

Thursday Night

ESE wind around 10 kt becoming SW after midnight. Winds could gust as high as 15 kt. A chance of showers. Waves 1 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.