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Juneau, AK Local Forecast Office

Cape Spencer AK

Marine Point Forecast

[NOTICE]

Today
High: 53 °F
W 10kt
2-3ft
Tonight
Low: 47 °F
W 10kt
3ft
Thursday
High: 53 °F
WSW 10kt
3ft
Thursday Night
Low: 47 °F
Light Wind
2-3ft
Friday
High: 53 °F
Light Wind
2-3ft
Friday Night
Low: 48 °F
Light Wind
3ft
Independence Day
High: 54 °F
Light Wind
3ft
Saturday Night
Low: 48 °F
Light Wind
3ft
Sunday
High: 54 °F
Light Wind
3ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 3:47 am AKDT Jul 1, 2026
Forecast Valid: 6am AKDT Jul 1, 2026-6pm AKDT Jul 7, 2026

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Detailed Forecast

Synopsis: With a very weak low pressure system west of Cape Spencer, winds are waves are expected to be fairly benign Wednesday. By Friday, a front will approach the area, which looks to bring higher rain chances, and winds up to 20 kts and waves up to 6 feet in the Gulf of Alaska.

Today

SSW wind 5 to 10 kt becoming W in the morning. A chance of showers, mainly before 10am. Seas 2 to 3 ft.

Tonight

W wind around 10 kt. A slight chance of showers between 1am and 4am, then a chance of sprinkles after 4am. Seas around 3 ft.

Thursday

WSW wind around 10 kt. A chance of sprinkles before 7am, then a chance of sprinkles after 10am. Seas around 3 ft.

Thursday Night

Variable winds 5 kt or less. A chance of showers after 4am. Seas 2 to 3 ft.

Friday

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

Friday Night

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

Sunday

Variable winds 5 kt or less. Showers likely. 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.