For More Weather Information:

10NM SW Grand Portage MN

[NOTICE]

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Last Update: 8:32 pm CDT Apr 3, 2026
Forecast Valid: 10pm CDT Apr 3, 2026-6pm CDT Apr 10, 2026

Tonight

ENE wind 15 to 20 kt, with gusts as high as 35 kt. Snow likely, mainly after 5am. Waves 2 ft building to 5 ft.

Saturday

ENE wind 20 to 25 kt, with gusts as high as 35 kt. Snow. The snow could be heavy at times. Waves 5 to 7 ft.

Saturday Night

NNW wind 10 to 15 kt, with gusts as high as 30 kt. Snow likely before 1am. Waves 4 ft subsiding to 1 ft.

Sunday

NW wind 10 to 15 kt becoming W in the afternoon. Winds could gust as high as 25 kt. Increasing clouds. Waves 1 ft or less.

Sunday Night

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

Monday

N wind around 15 kt, with gusts as high as 30 kt. A chance of snow before 1pm. Waves 1 ft or less.

Monday Night

NNW wind 5 to 10 kt, with gusts as high as 20 kt. Mostly clear. Waves 1 ft or less.

Tuesday

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

Tuesday Night

S wind 10 to 15 kt increasing to 15 to 20 kt after midnight. Winds could gust as high as 30 kt. A chance of snow. Waves 1 ft building to 5 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.