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Juneau, AK Local Forecast Office

4NM ESE Grindall Island AK

Marine Point Forecast

[NOTICE]

Tonight
Low: 52 °F
SSE 10kt
2ft
Tuesday
High: 59 °F
S 10kt
2ft
Tuesday Night
Low: 52 °F
SSE 10kt
2ft
Wednesday
High: 60 °F
SSE 10kt
1-2ft
Wednesday Night
Low: 52 °F
S 10kt
1-2ft
Thursday
High: 59 °F
⇑SSE 25kt
3-5ft
Thursday Night
Low: 54 °F
SSE 30kt
4-6ft
Friday
High: 58 °F
SSE 15kt
3ft
Friday Night
Low: 54 °F
SSW 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: 9:43 pm AKDT Jul 7, 2025
Forecast Valid: 10pm AKDT Jul 7, 2025-6pm AKDT Jul 14, 2025

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Detailed Forecast

Synopsis: Low pressure over will continue to weaken as it moves across the central Inner Channels through Monday night. Some showers along the southern Outer Coast may develop into thunderstorms during this period. Broad ridging and westerly onshore flow will set up for Tuesday followed by the high pressure building over the Inner Channels for Wednesday.

Tonight

SW wind around 10 kt becoming SSE after midnight. Showers, mainly before 4am. Seas around 2 ft.

Tuesday

S wind around 10 kt. Showers, mainly before 4pm. Seas around 2 ft.

Tuesday Night

SSE wind around 10 kt. Scattered showers, mainly before 10pm. Seas around 2 ft.

Wednesday

SSE wind 5 to 10 kt. Partly sunny. Seas 1 to 2 ft.

Wednesday Night

S wind 5 to 10 kt. Partly cloudy. Seas 1 to 2 ft.

Thursday

SSE wind 15 to 20 kt increasing to 20 to 25 kt in the afternoon. Rain, mainly after 1pm. Seas 3 to 5 ft.

Thursday Night

SSE wind 20 to 30 kt. Rain. The rain could be heavy at times. Seas 4 to 6 ft.

Friday

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

Friday Night

SSW 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.