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Juneau, AK Local Forecast Office

Cape Spencer AK

Marine Point Forecast

[NOTICE]

Tonight
Low: 47 °F
SW 10kt
2-3ft
Friday
High: 53 °F
ENE 15kt
3-4ft
Friday Night
Low: 48 °F
NE 10kt
3ft
Independence Day
High: 55 °F
Light Wind
3ft
Saturday Night
Low: 48 °F
Light Wind
3ft
Sunday
High: 54 °F
Light Wind
2-3ft
Sunday Night
Low: 49 °F
Light Wind
2ft
Monday
High: 56 °F
ENE 10kt
3ft
Monday Night
Low: 49 °F
NE 10kt
3ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 3:54 pm AKDT Jul 2, 2026
Forecast Valid: 6pm AKDT Jul 2, 2026-6pm AKDT Jul 9, 2026

View Nearby Observations

Detailed Forecast

Synopsis: Mostly benign winds going into this afternoon with winds generally below 10 knots, except for 20-25 knot winds in Lynn Canal. A front moves in from the west tonight into Friday, increasing winds up to 20 knots and waves to 6 ft in the Gulf of Alaska.

Tonight

SW wind 5 to 10 kt becoming S after midnight. Isolated showers before 7pm, then a chance of showers after 4am. Seas 2 to 3 ft.

Friday

ENE wind 10 to 15 kt. Showers, mainly after 7am. Seas 3 to 4 ft.

Friday Night

NE wind 5 to 10 kt. Showers likely, mainly before 10pm. Seas around 3 ft.

Independence Day

Variable winds 5 kt or less. Mostly cloudy. Seas around 3 ft.

Saturday Night

Variable winds 5 kt or less. A chance of showers after 10pm. Seas around 3 ft.

Sunday

Variable winds 5 kt or less. Showers, mainly after 10am. Seas 2 to 3 ft.

Sunday Night

Variable winds 5 kt or less. Showers. Seas around 2 ft.

Monday

ENE wind around 10 kt. Showers. Seas around 3 ft.

Monday Night

NE wind 5 to 10 kt. Showers. Seas around 3 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.