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Juneau, AK Local Forecast Office

Cape Spencer AK

Marine Point Forecast

[NOTICE]

This Afternoon
High: 48 °F
Light Wind
4ft
Tonight
Low: 42 °F
Light Wind
4ft
Saturday
High: 49 °F
E 15kt
3-4ft
Saturday Night
Low: 43 °F
E 10kt
3ft
Sunday
High: 51 °F
ENE 10kt
3ft
Sunday Night
Low: 45 °F
NE 10kt
2-3ft
Monday
High: 58 °F
ENE 15kt
3ft
Monday Night
Low: 49 °F
NNE 15kt
3ft
Tuesday
High: 64 °F
ENE 15kt
4-6ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 3:09 pm AKDT May 29, 2026
Forecast Valid: 4pm AKDT May 29, 2026-6pm AKDT Jun 4, 2026

View Nearby Observations

Detailed Forecast

Synopsis: A low in the central gulf of Alaska will slowly drift South through Saturday. Shortwaves rotating around the low Saturday will bring occasional periods of more breezy conditions along with rain showers. Maritime conditions will improve Sunday into Monday as the low weakens and a weak ridge moves over SE AK.

This Afternoon

Variable winds 5 kt or less. A slight chance of showers. Seas around 4 ft.

Tonight

Variable winds 5 kt or less. A chance of showers, mainly between 10pm and 4am. Seas around 4 ft.

Saturday

E wind 10 to 15 kt. Showers likely, mainly between 10am and 4pm. Seas 3 to 4 ft.

Saturday Night

E wind around 10 kt. Showers likely, mainly after 10pm. Seas around 3 ft.

Sunday

ENE wind 5 to 10 kt. Showers likely. Seas around 3 ft.

Sunday Night

NE wind 5 to 10 kt. Mostly cloudy. Seas 2 to 3 ft.

Monday

ENE wind around 15 kt. Mostly sunny. Seas around 3 ft.

Monday Night

NNE wind 10 to 15 kt. Mostly clear. Seas around 3 ft.

Tuesday

ENE wind around 15 kt. Mostly sunny. Seas 4 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.