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 Jun 25, 2026
Forecast Valid: 1pm CDT Jun 25, 2026-6pm CDT Jul 1, 2026

This Afternoon

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

Tonight

Variable winds 5 kt or less. Patchy fog after 5am. Waves 1 ft or less.

Friday

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

Friday Night

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

Saturday

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

Saturday Night

ENE wind 5 to 10 kt. Mostly cloudy. Waves 1 ft or less.

Sunday

ENE wind 5 to 15 kt. A slight chance of showers after 1pm. Waves 1 to 2 ft.

Sunday Night

ENE wind 5 to 10 kt, with gusts as high as 20 kt. A chance of showers, then showers likely and possibly a thunderstorm after 1am. Waves 2 to 3 ft.

Monday

ENE wind around 10 kt, with gusts as high as 15 kt. A chance of showers and thunderstorms before 1pm. Waves 2 to 3 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.