For More Weather Information:

21NM E Grand Portage MN

[NOTICE]

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Last Update: 4:05 pm CDT Oct 17, 2026
Forecast Valid: 5pm CDT Oct 17, 2026-6pm CDT Oct 24, 2026

This Afternoon

SW wind around 20 kt, with gusts as high as 30 kt. Sunny. Waves 1 ft or less.

Tonight

SW wind 15 to 20 kt, with gusts as high as 35 kt. Partly cloudy. Waves 1 ft or less.

Sunday

SW wind 20 to 25 kt, with gusts as high as 40 kt. Mostly sunny. Waves 1 ft or less.

Sunday Night

WSW wind 10 to 15 kt becoming WNW 5 to 10 kt after midnight. Winds could gust as high as 25 kt. Partly cloudy. Waves 1 ft or less.

Monday

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

Monday Night

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

Tuesday

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

Tuesday Night

ESE wind 5 to 10 kt becoming SSW after midnight. Partly cloudy. Waves 1 ft or less.

Wednesday

SW wind 5 to 10 kt. Mostly 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.