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Juneau, AK Local Forecast Office

Cape Spencer AK

Marine Point Forecast

[NOTICE]

This Afternoon
High: 57 °F
Light Wind
4ft
Tonight
Low: 48 °F
W 10kt
4ft
Saturday
High: 56 °F
W 15kt
4-5ft
Saturday Night
Low: 51 °F
WNW 15kt
4-5ft
Sunday
High: 55 °F
Light Wind
4ft
Sunday Night
Low: 50 °F
Light Wind
3-4ft
Labor Day
High: 56 °F
Light Wind
3ft
Monday Night
Low: 51 °F
Light Wind
3ft
Tuesday
High: 56 °F
S 10kt
3-4ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 3:07 pm AKDT Sep 4, 2026
Forecast Valid: 4pm AKDT Sep 4, 2026-6pm AKDT Sep 10, 2026

View Nearby Observations

Detailed Forecast

Synopsis: A ridge of high pressure remains over the central and eastern gulf through the weekend bringing W to NW winds over the gulf. With continued clear skies and warmer temperatures, sea breezes are likely to impact the inside channels for the weekend. A weak front will move into the eastern gulf from the west on Sunday night into Monday.

This Afternoon

Variable winds 5 kt or less. Sunny. Seas around 4 ft.

Tonight

W wind 5 to 10 kt. Patchy fog after 10pm. Seas around 4 ft.

Saturday

W wind around 15 kt. Mostly cloudy. Seas 4 to 5 ft.

Saturday Night

WNW wind 5 to 15 kt. Mostly cloudy. Seas 4 to 5 ft.

Sunday

Variable winds 5 kt or less. Mostly cloudy. Seas around 4 ft.

Sunday Night

Variable winds 5 kt or less. A chance of rain. Seas 3 to 4 ft.

Labor Day

Variable winds 5 kt or less. Rain likely. Seas around 3 ft.

Monday Night

Variable winds 5 kt or less. Rain likely. Seas around 3 ft.

Tuesday

S wind 5 to 10 kt. Rain. The rain could be heavy at times. Seas 3 to 4 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.