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10NM SW Grand Portage MN

[NOTICE]

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Last Update: 12:06 pm CDT Apr 23, 2026
Forecast Valid: 12pm CDT Apr 23, 2026-6pm CDT Apr 29, 2026

This Afternoon

NE wind around 15 kt. A slight chance of rain and thunderstorms after 5pm. Waves around 3 ft.

Tonight

NE wind 10 to 15 kt. Rain and thunderstorms before 1am, then rain and possibly a thunderstorm, mainly after 1am. Waves around 3 ft.

Friday

NNE wind around 10 kt becoming NW in the afternoon. Winds could gust as high as 15 kt. Rain, mainly before 2pm. Waves 2 to 3 ft.

Friday Night

Variable winds 5 kt or less. Mostly clear. Waves 1 to 2 ft.

Saturday

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

Saturday Night

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

Sunday

ENE wind 5 to 10 kt. Partly sunny. Waves 1 ft or less.

Sunday Night

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

Monday

ENE wind 10 to 20 kt, with gusts as high as 25 kt. A chance of rain. Waves 1 ft building to 4 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.