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: 12:11 am CST Nov 18, 2025
Forecast Valid: 1am CST Nov 18, 2025-6pm CST Nov 24, 2025

Tuesday

Variable winds 5 kt or less. Sunny. Waves 1 ft or less.

Tuesday Night

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

Wednesday

SW wind 5 to 10 kt, with gusts as high as 20 kt. Mostly cloudy. Waves 1 ft or less.

Wednesday Night

SW wind around 10 kt, with gusts as high as 20 kt. Rain likely, mainly after midnight. Waves around 1 ft.

Thursday

WSW wind around 10 kt becoming WNW in the afternoon. Winds could gust as high as 20 kt. Rain likely, mainly before noon. Waves 1 ft or less.

Thursday Night

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

Friday

WNW wind 5 to 10 kt, with gusts as high as 20 kt. Mostly sunny. Waves 1 ft or less.

Friday Night

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

Saturday

SW wind 5 to 10 kt, with gusts as high as 15 kt. Partly sunny. 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.