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Anchorage, AK Local Forecast Office

39NM NW Seguam Island AK

Marine Point Forecast

[NOTICE]

Overnight
Low: 39 °F
NW 10kt
5-6ft
Saturday
High: 41 °F
NNE 15kt
5-6ft
Saturday Night
Low: 33 °F
NE 25kt
11ft

Small Craft Advisory
Sunday
High: 35 °F
NNE 35kt
17ft
Sunday Night
Low: 32 °F
NNE 30kt
16-17ft
Monday
High: 35 °F
N 25kt
11-12ft
Monday Night
Low: 33 °F
N 25kt
11ft
Tuesday
High: 39 °F
N 20kt
5-7ft
Tuesday Night
Low: 35 °F
NW 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: 8:09 pm AKST Dec 5, 2025
Forecast Valid: 11pm AKST Dec 5, 2025-6pm AKST Dec 12, 2025

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY SATURDAY NIGHT...

Synopsis: A 1000 mb low 130 nm SW of Atka exits south to the North Pacific through Sat morning. A 982 mb North Pacific low 370 nm W of Shemya Sat morning moves to 310 nm SE of Atka at 978 mb Sun afternoon. Strong northeasterly gale-force winds continue along the coast with storm-force along the Kuskokwim Delta Coast through the weekend. Extreme Freezing Spray continues along the Kuskokwim Delta Coast through the weekend.

Overnight

NW wind around 10 kt. Scattered showers, mainly before midnight. Seas 5 to 6 ft.

Saturday

NNE wind 10 to 15 kt. Partly sunny. Seas 5 to 6 ft.

Saturday Night

NE wind 15 to 25 kt, with gusts as high as 30 kt. Partly cloudy. Seas 6 ft building to 11 ft.

Sunday

NNE wind 30 to 35 kt. Snow showers likely, mainly after 3pm. Seas 12 ft building to 17 ft.

Sunday Night

NNE wind 25 to 30 kt, with gusts as high as 40 kt. Snow showers likely, mainly before 3am. Seas 16 to 17 ft.

Monday

N wind around 25 kt. Scattered snow showers before 9am. Seas 11 to 12 ft.

Monday Night

N wind 20 to 25 kt. Mostly cloudy. Seas 11 ft subsiding to 7 ft.

Tuesday

N wind 15 to 20 kt becoming NW in the afternoon. Partly sunny. Seas 5 to 7 ft.

Tuesday Night

NW wind around 15 kt. Mostly cloudy. 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.