For More Weather Information:

Anchorage, AK Local Forecast Office

10NM ENE Castle Cape AK

Marine Point Forecast

[NOTICE]

This Afternoon
High: 54 °F
ENE 10kt
3ft
Tonight
Low: 51 °F
NNE 10kt
3ft
Sunday
High: 55 °F
Light Wind
2ft
Sunday Night
Low: 52 °F
S 15kt
3ft
Monday
High: 55 °F
S 20kt
4ft
Monday Night
Low: 51 °F
SW 20kt⇓
3-4ft
Tuesday
High: 54 °F
NNW 10kt
2-3ft
Tuesday Night
Low: 51 °F
Light Wind
2ft
Wednesday
High: 54 °F
Light Wind
2ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 1:12 pm AKDT Aug 1, 2026
Forecast Valid: 3pm AKDT Aug 1, 2026-6pm AKDT Aug 7, 2026

View Nearby Observations

Detailed Forecast

Synopsis: A 1009 mb low 150 nm SE of St. George moves onto the Mainland Sat afternoon. A weak ridge moves through the Bering ahead of a strong cold front Sunday moving through the area.

This Afternoon

ENE wind around 10 kt. A chance of rain. Seas around 3 ft.

Tonight

NNE wind 5 to 10 kt. Cloudy. Seas around 3 ft.

Sunday

Variable winds 5 kt or less. Mostly cloudy. Seas around 2 ft.

Sunday Night

S wind 10 to 15 kt. A chance of rain after 10pm. Seas around 3 ft.

Monday

S wind around 20 kt, with gusts as high as 25 kt. Rain likely, mainly after 10am. Seas around 4 ft.

Monday Night

SW wind 15 to 20 kt decreasing to 5 to 10 kt after midnight. Rain. Seas 3 to 4 ft.

Tuesday

NNW wind 5 to 10 kt. Rain likely before 10am. Seas 2 to 3 ft.

Tuesday Night

Variable winds 5 kt or less. Mostly cloudy. Seas around 2 ft.

Wednesday

Variable winds 5 kt or less. Mostly cloudy. Seas around 2 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.