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: 1:55 am CDT Jun 17, 2025
Forecast Valid: 3am CDT Jun 17, 2025-6pm CDT Jun 23, 2025

Tuesday

WNW wind 5 to 10 kt becoming SSW in the afternoon. Partly sunny. Waves 1 ft or less.

Tuesday Night

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

Wednesday

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

Wednesday Night

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

Juneteenth

NE wind 5 to 10 kt. A chance of showers. Waves 1 ft or less.

Thursday Night

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

Friday

Variable winds 5 kt or less. A chance of showers. Waves 1 ft or less.

Friday Night

Variable winds 5 kt or less. Showers likely. Waves 1 ft or less.

Saturday

Variable winds 5 kt or less. 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.