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: 9:27 pm CDT Jun 15, 2026
Forecast Valid: 10pm CDT Jun 15, 2026-6pm CDT Jun 22, 2026

Tonight

Variable winds 5 kt or less. A chance of showers, mainly before midnight. Waves 1 ft or less.

Tuesday

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

Tuesday Night

Variable winds 5 kt or less. Increasing clouds. Waves 1 ft or less.

Wednesday

Variable winds less than 5 kt becoming E 5 to 10 kt in the morning. A slight chance of showers after 1pm. Waves 1 ft or less.

Wednesday Night

ENE wind around 10 kt becoming N after midnight. Winds could gust as high as 20 kt. A slight chance of showers before 1am. Waves 1 ft or less.

Thursday

NW wind around 10 kt becoming W in the afternoon. A chance of showers and thunderstorms after 1pm. Waves 1 ft or less.

Thursday Night

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

Juneteenth

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

Friday Night

W wind 5 to 10 kt. 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.