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Anchorage, AK Local Forecast Office

39NM NW Seguam Island AK

Marine Point Forecast

[NOTICE]

Today
High: 45 °F
SW 20kt
5-6ft
Tonight
Low: 43 °F
WSW 20kt
6ft
Sunday
High: 43 °F
WSW 15kt
4-5ft
Sunday Night
Low: 42 °F
SSE 10kt
2-3ft
Monday
High: 47 °F
SE 25kt
3-4ft
Monday Night
Low: 44 °F
S 30kt
6-7ft
Tuesday
High: 46 °F
SSW 25kt
6-7ft
Tuesday Night
Low: 42 °F
SSW 25kt
7-8ft
Wednesday
High: 45 °F
SW 30kt
7ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 2:35 am AKDT Jun 27, 2026
Forecast Valid: 8am AKDT Jun 27, 2026-6pm AKDT Jul 3, 2026

View Nearby Observations

Detailed Forecast

Synopsis: A 1003 mb low 290 nm W of Saint George moves to 80 nm W of Nunivak Island at 1013 mb by Sun afternoon, then dissipates. A 985 mb North Pacific low moves to 330 nm SW of Attu by Mon morning. Its front moves into the Western Bering and Aleutians by Sun afternoon.

Today

SW wind around 20 kt. Showers likely, mainly before 10am. Areas of fog. Seas 5 to 6 ft.

Tonight

WSW wind 15 to 20 kt. Patchy fog. Seas around 6 ft.

Sunday

WSW wind around 15 kt. Mostly cloudy. Seas 4 to 5 ft.

Sunday Night

SW wind 5 to 10 kt becoming SSE after midnight. Mostly cloudy. Seas 2 to 3 ft.

Monday

SE wind 20 to 25 kt. Rain, mainly after 10am. Seas 3 to 4 ft.

Monday Night

S wind 25 to 30 kt. Rain. Seas 6 to 7 ft.

Tuesday

SSW wind 20 to 25 kt. Showers before 10am. Seas 6 to 7 ft.

Tuesday Night

SSW wind around 25 kt, with gusts as high as 35 kt. Showers likely. Seas 7 to 8 ft.

Wednesday

SW wind around 30 kt, with gusts as high as 40 kt. Showers likely. Seas around 7 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.