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: 9:01 am CDT Jul 12, 2026
Forecast Valid: 10am CDT Jul 12, 2026-6pm CDT Jul 18, 2026

Today

SW wind 10 to 15 kt. Mostly sunny. Waves 1 to 2 ft.

Tonight

WSW wind around 10 kt, with gusts as high as 20 kt. Partly cloudy. Waves 1 to 2 ft.

Monday

WSW wind 10 to 15 kt, with gusts as high as 25 kt. Mostly sunny. Waves 1 to 3 ft.

Monday Night

WSW wind around 15 kt, with gusts as high as 30 kt. Partly cloudy. Waves 2 to 3 ft.

Tuesday

W wind around 10 kt, with gusts as high as 20 kt. Sunny. Waves 1 to 2 ft.

Tuesday Night

NNW wind 5 to 10 kt. Partly cloudy. Waves 1 ft or less.

Wednesday

NNW 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. Mostly cloudy. Waves 1 ft or less.

Thursday

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