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: 11:21 pm CDT May 23, 2026
Forecast Valid: 12am CDT May 24, 2026-6pm CDT May 30, 2026

Overnight

Variable winds 5 kt or less. A slight chance of showers before 1am. Waves around 1 ft.

Sunday

SW wind 5 to 10 kt. A slight chance of showers after 4pm. Waves around 1 ft.

Sunday Night

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

Memorial Day

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

Monday Night

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

Tuesday

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

Tuesday Night

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

Wednesday

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

Wednesday Night

Variable winds 5 kt or less. Mostly clear. 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.