For More Weather Information:

Juneau, AK Local Forecast Office

4NM ESE Grindall Island AK

Marine Point Forecast

[NOTICE]

Tonight
Low: 45 °F
WNW 15kt
3ft
Saturday
High: 51 °F
NNW 15kt
3ft
Saturday Night
Low: 42 °F
NW 15kt
2-3ft
Sunday
High: 51 °F
N 10kt
2ft
Sunday Night
Low: 46 °F
NNE 10kt
1-2ft
Columbus Day
High: 51 °F
Light Wind
2ft
Monday Night
Low: 47 °F
SE 10kt
1-2ft
Tuesday
High: 53 °F
SSE 10kt
2ft
Tuesday Night
Low: 47 °F
W 10kt
2ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 4:23 pm AKDT Oct 10, 2025
Forecast Valid: 6pm AKDT Oct 10, 2025-6pm AKDT Oct 17, 2025

View Nearby Observations

Detailed Forecast

Synopsis: High pressure builds back into the region Friday afternoon with weak outflow winds along the inner channels. A low moves into the northern Gulf early next week.

Tonight

WNW wind around 15 kt. Mostly clear. Seas around 3 ft.

Saturday

NNW wind around 15 kt. Sunny. Seas around 3 ft.

Saturday Night

NW wind 10 to 15 kt. Mostly clear. Seas 2 to 3 ft.

Sunday

N wind around 10 kt. Sunny. Seas around 2 ft.

Sunday Night

NNE wind 5 to 10 kt. Mostly cloudy. Seas 1 to 2 ft.

Columbus Day

Variable winds 5 kt or less. Partly sunny. Seas around 2 ft.

Monday Night

NNW wind 5 to 10 kt becoming SE after midnight. A chance of rain. Seas 1 to 2 ft.

Tuesday

SSE wind around 10 kt. Rain likely. Seas around 2 ft.

Tuesday Night

W wind around 10 kt. Rain likely. Seas around 2 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.