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Juneau, AK Local Forecast Office

4NM ESE Grindall Island AK

Marine Point Forecast

[NOTICE]

This Afternoon
High: 59 °F
SSE 15kt
3ft
Tonight
Low: 53 °F
SSE 15kt
2-3ft
Monday
High: 60 °F
SSE 20kt
4ft
Monday Night
Low: 53 °F
SSE 10kt
2ft
Tuesday
High: 58 °F
S 15kt
3ft
Tuesday Night
Low: 52 °F
SSE 10kt
2-4ft
Wednesday
High: 59 °F
SSE 10kt
2ft
Wednesday Night
Low: 52 °F
S 10kt
1-2ft
Thursday
High: 57 °F
SSE 20kt
2-4ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 8:37 am AKDT Jul 6, 2025
Forecast Valid: 3pm AKDT Jul 6, 2025-6pm AKDT Jul 12, 2025

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY LATE TONIGHT THROUGH MONDAY...

Synopsis: Winds remain increased over the eastern Gulf & Inner Channels as a front continues to pass over the Inner Channels & an associated low center proceeds into the northern Gulf of Alaska. There is some potential for a few thunderstorms over the eastern Gulf periodically behind the front through Sunday night, then again over the southeastern Gulf for Monday night after a new low center tracks in from the south.

This Afternoon

SSE wind around 15 kt. Scattered showers. Seas around 3 ft.

Tonight

SSE wind 10 to 15 kt. Showers, mainly after 10pm. Seas 2 to 3 ft.

Monday

SSE wind around 20 kt. Showers. Seas around 4 ft.

Monday Night

SSE wind around 10 kt becoming SSW after midnight. Showers, mainly before 1am. Seas around 2 ft.

Tuesday

S wind around 15 kt. Showers likely, mainly between 7am and 4pm. Seas around 3 ft.

Tuesday Night

SSE wind around 10 kt. A chance of showers before 10pm. Seas 2 to 4 ft.

Wednesday

SSE wind around 10 kt. Partly sunny. Seas around 2 ft.

Wednesday Night

S wind 5 to 10 kt. A chance of rain. Seas 1 to 2 ft.

Thursday

SSE wind 10 to 20 kt. Rain likely. Seas 2 to 4 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.