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Juneau, AK Local Forecast Office

4NM ESE Grindall Island AK

Marine Point Forecast

[NOTICE]

This Afternoon
High: 47 °F
Light Wind
1ft
Tonight
Low: 41 °F
E 10kt
1-2ft
Friday
High: 45 °F
NNE 10kt
2ft
Friday Night
Low: 41 °F
SSE 15kt
2-3ft
Saturday
High: 46 °F
S 15kt
3ft
Saturday Night
Low: 41 °F
⇑SSE 30kt
9ft
Sunday
High: 46 °F
SSE 30kt⇓
10ft
Sunday Night
Low: 39 °F
S 20kt
10ft
Monday
High: 46 °F
ESE 20kt
10ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 6:06 am AKST Dec 4, 2025
Forecast Valid: 1pm AKST Dec 4, 2025-6pm AKST Dec 10, 2025

View Nearby Observations

Detailed Forecast

Synopsis: Ridging building in behind departing front is resulting in calmer winds over the waters today. Another low will track through the southern Gulf and into Haida Gwaii Thursday night into Friday, bringing increasing winds and seas over the southern waters. General low pressure pattern in the Gulf with up to gale force winds this weekend and early next week.

This Afternoon

Variable winds 5 kt or less. Patchy fog before 3pm. Seas around 1 ft.

Tonight

SE wind 5 to 10 kt becoming E after midnight. A slight chance of rain after 9pm. Seas 1 to 2 ft.

Friday

NNE wind around 10 kt becoming SSW in the afternoon. Rain likely, mainly after 3pm. Seas around 2 ft.

Friday Night

SSE wind 10 to 15 kt. Rain. Seas 2 to 3 ft.

Saturday

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

Saturday Night

SSE wind 15 to 20 kt increasing to 25 to 30 kt after midnight. Rain. Seas 3 ft building to 9 ft.

Sunday

SSE wind 25 to 30 kt decreasing to 20 to 25 kt in the afternoon. Rain. Seas 10 ft subsiding to 5 ft.

Sunday Night

S wind around 20 kt. Rain. Seas 5 ft building to 10 ft.

Monday

SSE wind around 20 kt becoming ESE in the afternoon. Rain. Seas 10 ft subsiding to 6 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.