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Juneau, AK Local Forecast Office

4NM ESE Grindall Island AK

Marine Point Forecast

[NOTICE]

This Afternoon
High: 29 °F
N 10kt
2ft
Tonight
Low: 26 °F
N 10kt
2ft
Saturday
High: 40 °F
SSE 15kt
2-3ft
Saturday Night
Low: 39 °F
SSE 15kt
3ft
Sunday
High: 44 °F
SSE 30kt
8ft
Sunday Night
Low: 40 °F
ESE 25kt
7-9ft
Monday
High: 40 °F
SE 20kt
5-6ft
Monday Night
Low: 36 °F
SE 20kt
5ft
Tuesday
High: 40 °F
SE 15kt
3-5ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 3:37 pm AKST Dec 12, 2025
Forecast Valid: 4pm AKST Dec 12, 2025-6pm AKST Dec 18, 2025

View Nearby Observations

Detailed Forecast

Synopsis: A weak, quick moving low pressure system will move south through the central gulf through the rest of today. Another stronger system is expected to move north into the gulf from the south this weekend. Meanwhile, strong northerly outflow winds will continue into next week.

This Afternoon

N wind around 10 kt. Sunny. Seas around 2 ft.

Tonight

N wind 5 to 10 kt. Snow likely, mainly after 3am. Seas around 2 ft.

Saturday

NE wind 10 to 15 kt becoming SSE in the afternoon. Snow before noon, then rain and snow between noon and 3pm, then rain after 3pm. Seas 2 to 3 ft.

Saturday Night

SSE wind around 15 kt becoming ESE after midnight. Rain and snow, becoming all rain after 9pm. Seas around 3 ft.

Sunday

ESE wind 20 to 30 kt becoming SSE in the afternoon. Winds could gust as high as 35 kt. Rain. The rain could be heavy at times. Seas 4 ft building to 8 ft.

Sunday Night

ESE wind 15 to 25 kt. Rain before 3am, then rain and snow. The rain could be heavy at times. Seas 7 to 9 ft.

Monday

SE wind 15 to 20 kt. Rain before 9am, then rain and snow between 9am and 3pm, then rain after 3pm. Seas 5 to 6 ft.

Monday Night

SE wind 15 to 20 kt. Rain before 9pm, then rain and snow. Seas around 5 ft.

Tuesday

SE wind 10 to 15 kt. Rain and snow likely, mainly before 3pm. Seas 3 to 5 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.