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: 6:02 am CDT Jun 25, 2026
Forecast Valid: 6am CDT Jun 25, 2026-6pm CDT Jul 1, 2026

Today

Variable winds 5 kt or less. A chance of sprinkles between 1pm and 4pm. Waves 1 ft or less.

Tonight

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

Friday

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

Friday Night

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

Saturday

E wind 5 to 10 kt. Mostly sunny. Waves 1 ft or less.

Saturday Night

ENE wind 5 to 10 kt, with gusts as high as 15 kt. Mostly cloudy. Waves 1 ft or less.

Sunday

ENE wind 10 to 15 kt. A chance of showers. Waves 1 to 2 ft.

Sunday Night

ENE wind 5 to 10 kt, with gusts as high as 20 kt. Showers likely, with thunderstorms also possible after 1am. Waves 2 to 3 ft.

Monday

ENE wind 5 to 10 kt, with gusts as high as 15 kt. A chance of showers and thunderstorms, mainly 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.