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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: 8:36 pm CDT May 7, 2026
Forecast Valid: 11pm CDT May 7, 2026-6pm CDT May 14, 2026

Overnight

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

Friday

SW wind 5 to 10 kt, with gusts as high as 15 kt. Scattered sprinkles between 3pm and 4pm, then isolated showers after 4pm. Waves 1 ft or less.

Friday Night

Variable winds 5 kt or less. Isolated showers before 9pm, then scattered sprinkles between 9pm and 10pm. Waves 1 ft or less.

Saturday

NW wind around 10 kt, with gusts as high as 15 kt. Partly sunny. Waves 1 ft or less.

Saturday Night

NW wind around 10 kt, with gusts as high as 20 kt. Mostly clear. Waves 1 ft or less.

Sunday

W wind around 10 kt, with gusts as high as 15 kt. Mostly sunny. Waves 1 ft or less.

Sunday Night

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

Monday

NNW wind 5 to 10 kt becoming S in the afternoon. Sunny. Waves 1 ft or less.

Monday Night

Variable winds 5 kt or less. Partly cloudy. 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.