For More Weather Information:

Juneau, AK Local Forecast Office

Cape Spencer AK

Marine Point Forecast

[NOTICE]

Tonight
Low: 46 °F
SW 20kt
5ft
Thursday
High: 50 °F
SSW 10kt
4ft
Thursday Night
Low: 46 °F
Light Wind
3-4ft
Friday
High: 50 °F
S 10kt
3ft
Friday Night
Low: 46 °F
Light Wind
2-3ft
Saturday
High: 50 °F
ENE 15kt
3-4ft
Saturday Night
Low: 46 °F
E 15kt
5-6ft
Sunday
High: 52 °F
ESE 10kt
6ft
Sunday Night
Low: 48 °F
E 10kt
5-6ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 4:00 pm AKDT Sep 30, 2026
Forecast Valid: 7pm AKDT Sep 30, 2026-6pm AKDT Oct 7, 2026

View Nearby Observations

Detailed Forecast

Synopsis: Winds increase to fresh breezes over much of the area Wednesday night, reaching near gale force for Lynn Canal Thursday morning. Winds slowly subside through Thursday afternoon, bringing lighter winds Friday. Our next large system moves into the Gulf Friday night into the weekend.

Tonight

SW wind 15 to 20 kt. Showers and possibly a thunderstorm. Seas around 5 ft.

Thursday

SSW wind around 10 kt. Showers likely and possibly a thunderstorm, then showers after 10am. Seas around 4 ft.

Thursday Night

Variable winds 5 kt or less. Showers. Seas 3 to 4 ft.

Friday

SE wind around 10 kt becoming SSW in the afternoon. Showers. Seas around 3 ft.

Friday Night

Variable winds 5 kt or less. Showers. Seas 2 to 3 ft.

Saturday

ENE wind 10 to 15 kt. Showers. Seas 3 to 4 ft.

Saturday Night

E wind around 15 kt. Showers. The rain could be heavy at times. Seas 5 to 6 ft.

Sunday

ESE wind around 10 kt. Showers. The rain could be heavy at times. Seas around 6 ft.

Sunday Night

E wind around 10 kt. Showers. Seas 5 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.