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Juneau, AK Local Forecast Office

4NM ESE Grindall Island AK

Marine Point Forecast

[NOTICE]

This Afternoon
High: 57 °F
SSE 15kt
3ft
Tonight
Low: 53 °F
SSE 15kt
3ft
Tuesday
High: 58 °F
ESE 15kt
2-3ft
Tuesday Night
Low: 52 °F
SSE 10kt
1-2ft
Wednesday
High: 57 °F
Light Wind
1ft
Wednesday Night
Low: 52 °F
Light Wind
1ft
Thursday
High: 59 °F
Light Wind
1-2ft
Thursday Night
Low: 52 °F
ESE 10kt
1-2ft
Independence Day
High: 59 °F
Light Wind
1ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 2:53 pm AKDT Jun 30, 2025
Forecast Valid: 4pm AKDT Jun 30, 2025-6pm AKDT Jul 6, 2025

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Detailed Forecast

Synopsis: A low over the SE Gulf will slowly weaken and lift as continues to move northeast over central inner channels. This low will remain in the area until Tuesday. A ridge of high pressure will then begin to build over the gulf Tuesday afternoon reaching to eastern gulf by Wednesday.

This Afternoon

SSE wind around 15 kt. A slight chance of showers. Seas around 3 ft.

Tonight

SSE wind around 15 kt. A slight chance of showers before 7pm, then a chance of showers after 1am. Seas around 3 ft.

Tuesday

ESE wind 10 to 15 kt. Showers likely, mainly after 1pm. Seas 2 to 3 ft.

Tuesday Night

SSE wind 5 to 10 kt. A chance of showers. Seas 1 to 2 ft.

Wednesday

Variable winds 5 kt or less. A chance of showers before 4pm. Seas around 1 ft.

Wednesday Night

Variable winds 5 kt or less. Sprinkles after 4am. Seas around 1 ft.

Thursday

Variable winds 5 kt or less. Sprinkles before 10am, then a chance of showers between 10am and 1pm, then sprinkles after 1pm. Seas 1 to 2 ft.

Thursday Night

ESE wind 5 to 10 kt. Sprinkles. Seas 1 to 2 ft.

Independence Day

Variable winds 5 kt or less. Partly sunny. Seas around 1 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.