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Juneau, AK Local Forecast Office

4NM ESE Grindall Island AK

Marine Point Forecast

[NOTICE]

This Afternoon
High: 50 °F
E 15kt
4ft
Tonight
Low: 44 °F
E 15kt
3-4ft
Friday
High: 47 °F
SE 15kt
3-4ft
Friday Night
Low: 42 °F
SSE 15kt
3-4ft
Saturday
High: 46 °F
E 15kt
3-4ft
Saturday Night
Low: 42 °F
ESE 20kt
3-5ft
Sunday
High: 50 °F
SE 20kt
6-7ft
Sunday Night
Low: 43 °F
SSE 20kt
5-6ft
Monday
High: 48 °F
SSE 20kt
4-5ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 5:51 am AKST Nov 6, 2025
Forecast Valid: 12pm AKST Nov 6, 2025-6pm AKST Nov 12, 2025

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY THROUGH THIS MORNING...

Synopsis: A gale force low currently in the central gulf continues moving NW through Thursday, to then linger in the western gulf Friday. Another gale force low is forecast to track north through the eastern gulf late Saturday into Sunday. Active pattern persists next week with more lows tracking through the gulf.

This Afternoon

E wind 10 to 15 kt. A chance of showers. Seas around 4 ft.

Tonight

E wind 5 to 15 kt. Rain, mainly after midnight. Seas 3 to 4 ft.

Friday

SSE wind around 15 kt becoming SW in the morning. Rain. Seas 3 to 4 ft.

Friday Night

SSE wind around 15 kt. Rain. Seas 3 to 4 ft.

Saturday

E wind 10 to 15 kt. Rain likely. Seas 3 to 4 ft.

Saturday Night

ESE wind 15 to 20 kt. Rain. The rain could be heavy at times. Seas 3 to 5 ft.

Sunday

SE wind around 20 kt. Rain. Seas 6 to 7 ft.

Sunday Night

SSE wind 15 to 20 kt. Rain. Seas 5 to 6 ft.

Monday

SSE wind 15 to 20 kt. Rain. Seas 4 to 5 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.