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: 1:21 pm CDT Mar 23, 2026
Forecast Valid: 2pm CDT Mar 23, 2026-6pm CDT Mar 29, 2026

This Afternoon

SW wind around 10 kt, with gusts as high as 15 kt. Sunny. Waves 1 ft or less.

Tonight

SSW wind 10 to 15 kt becoming WSW after midnight. Winds could gust as high as 25 kt. A slight chance of snow between 9pm and 1am. Waves 1 to 2 ft.

Tuesday

NW wind 5 to 10 kt becoming ESE in the afternoon. Mostly sunny. Waves 1 to 2 ft.

Tuesday Night

NE wind 5 to 10 kt. A slight chance of snow after 1am. Waves 1 ft or less.

Wednesday

ENE wind around 10 kt. A chance of snow, mainly before 1pm. Areas of dense fog before 11am. Waves 1 to 2 ft.

Wednesday Night

ENE wind 5 to 10 kt. A chance of snow. Waves 1 ft or less.

Thursday

N wind around 10 kt, with gusts as high as 20 kt. A chance of snow before 1pm. Waves 1 ft or less.

Thursday Night

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

Friday

WNW wind around 10 kt, with gusts as high as 20 kt. Mostly 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.