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Juneau, AK Local Forecast Office

4NM ESE Grindall Island AK

Marine Point Forecast

[NOTICE]

Today
High: 48 °F
SSE 25kt⇓
3-5ft

Small Craft Advisory
Tonight
Low: 44 °F
S 10kt
1-2ft
Thursday
High: 47 °F
SE 10kt
1ft
Thursday Night
Low: 43 °F
E 10kt
2ft
Friday
High: 46 °F
E 10kt
2-3ft
Friday Night
Low: 42 °F
SE 15kt
2-3ft
Saturday
High: 46 °F
S 15kt
3ft
Saturday Night
Low: 42 °F
⇑S 30kt
8ft
Sunday
High: 45 °F
S 30kt
8ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 6:41 am AKST Dec 3, 2025
Forecast Valid: 10am AKST Dec 3, 2025-6pm AKST Dec 9, 2025

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY THROUGH THIS AFTERNOON...

Synopsis: A front moving across the panhandle is bringing fresh to strong breezes this morning. Ridging forms over today behind the front, bringing weaker onshore flow. Another low expected to move through the central Gulf Thursday and Friday, with a gale force low center lingering near Kenai Peninsula through the weekend. General outflow pattern out of N channels this weekend.

Today

SSE wind 20 to 25 kt decreasing to 10 to 15 kt in the afternoon. Rain, mainly before 3pm. Seas 3 to 5 ft.

Tonight

S wind 5 to 10 kt. A chance of rain, mainly before 3am. Seas 1 to 2 ft.

Thursday

SSW wind 5 to 10 kt becoming SE in the afternoon. A chance of rain, mainly after 9am. Seas around 1 ft.

Thursday Night

E wind around 10 kt. Rain likely, mainly before 3am. Seas around 2 ft.

Friday

E wind around 10 kt becoming SW in the afternoon. Rain likely, mainly after 3pm. Seas 2 to 3 ft.

Friday Night

SSE wind 10 to 15 kt becoming SSW in the evening. Rain. Seas 2 to 3 ft.

Saturday

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

Saturday Night

ESE wind 15 to 20 kt becoming S 25 to 30 kt after midnight. Rain. Seas 3 ft building to 8 ft.

Sunday

S wind 20 to 30 kt becoming ESE in the morning. Rain. Seas 8 ft subsiding 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.