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Juneau, AK Local Forecast Office

4NM ESE Grindall Island AK

Marine Point Forecast

[NOTICE]

Today
High: 61 °F
SSW 10kt
1-2ft
Tonight
Low: 53 °F
Light Wind
1ft
Thursday
High: 58 °F
SSE 20kt
3-4ft
Thursday Night
Low: 54 °F
SSE 25kt
5ft
Friday
High: 59 °F
SSE 20kt
4-5ft
Friday Night
Low: 53 °F
SSW 10kt
2-3ft
Saturday
High: 57 °F
SSE 15kt
2-3ft
Saturday Night
Low: 54 °F
SE 15kt
3ft
Sunday
High: 59 °F
SSE 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: 3:55 am AKDT Jul 9, 2025
Forecast Valid: 6am AKDT Jul 9, 2025-6pm AKDT Jul 15, 2025

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Detailed Forecast

Synopsis: Westerly onshore flow will continue into Wednesday with brief high pressure building over the inner channels. A Gale force front enters the Gulf Thursday morning, reaching the outer Gulf coast by Thursday afternoon. Strongest marine winds expected along the northern Gulf of Alaska coast by Thursday afternoon.

Today

SSW wind 5 to 10 kt becoming WNW in the morning. Mostly sunny. Seas 1 to 2 ft.

Tonight

Variable winds 5 kt or less. Increasing clouds. Seas around 1 ft.

Thursday

SSE wind 15 to 20 kt. Rain likely, mainly after 1pm. Seas 3 to 4 ft.

Thursday Night

SSE wind around 25 kt, with gusts as high as 35 kt. Rain. Seas around 5 ft.

Friday

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

Friday Night

SSW wind around 10 kt. Showers likely, mainly before 7pm. Seas 2 to 3 ft.

Saturday

SSE wind 10 to 15 kt. Rain likely, mainly after 10am. Seas 2 to 3 ft.

Saturday Night

SE wind around 15 kt. A chance of rain. Seas around 3 ft.

Sunday

SSE wind around 10 kt. A chance of rain. 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.