For More Weather Information:

19NM E Grand Portage MN

[NOTICE]

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Last Update: 1:22 pm CDT Sep 19, 2026
Forecast Valid: 2pm CDT Sep 19, 2026-6pm CDT Sep 25, 2026

This Afternoon

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

Tonight

S wind 5 to 15 kt becoming N after midnight. Winds could gust as high as 20 kt. A slight chance of showers between 10pm and 11pm. Waves 1 to 2 ft.

Sunday

NE wind 10 to 15 kt, with gusts as high as 25 kt. Mostly sunny. Waves 2 to 4 ft.

Sunday Night

NE wind 5 to 10 kt. Increasing clouds. Waves around 1 ft.

Monday

E wind 5 to 10 kt. Cloudy through mid morning, then gradual clearing. 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

E wind 5 to 10 kt becoming SE after midnight. Mostly clear. Waves 1 ft or less.

Wednesday

SE wind 5 to 10 kt. 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.