For More Weather Information:

Anchorage, AK Local Forecast Office

39NM NW Seguam Island AK

Marine Point Forecast

[NOTICE]

Tonight
Low: 44 °F
Light Wind
2-3ft
Thursday
High: 46 °F
ESE 15kt
2-3ft
Thursday Night
Low: 44 °F
SE 15kt⇓
5ft
Friday
High: 46 °F
NNW 15kt
4ft
Friday Night
Low: 43 °F
NW 10kt
3ft
Saturday
High: 46 °F
WSW 10kt
3ft
Saturday Night
Low: 43 °F
W 15kt
3ft
Sunday
High: 46 °F
W 15kt
6ft
Sunday Night
Low: 43 °F
W 15kt
6ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 4:04 pm AKDT Jul 8, 2026
Forecast Valid: 7pm AKDT Jul 8, 2026-6pm AKDT Jul 15, 2026

View Nearby Observations

Detailed Forecast

Synopsis: A 1010 mb low arrives 340 nm S of Amchitka by Thu afternoon and moves to 90 nm E of Saint George at 1010 mb by Fri afternoon. Its front moves over the Aleutians through Fri afternoon.

Tonight

Variable winds 5 kt or less. Patchy fog. Seas 2 to 3 ft.

Thursday

ESE wind 10 to 15 kt. Rain, mainly after 1pm. Patchy fog. Seas 2 to 3 ft.

Thursday Night

SE wind 10 to 15 kt decreasing to 5 to 10 kt after midnight. Rain, mainly before 1am. Patchy fog before 1am. Seas around 5 ft.

Friday

NNW wind 10 to 15 kt. A chance of showers before 10am. Seas around 4 ft.

Friday Night

NW wind 5 to 10 kt. Mostly cloudy. Seas around 3 ft.

Saturday

WSW wind 5 to 10 kt. Mostly cloudy. Seas around 3 ft.

Saturday Night

W wind around 15 kt, with gusts as high as 25 kt. A chance of showers after 4am. Seas around 3 ft.

Sunday

W wind around 15 kt. A chance of showers. Seas around 6 ft.

Sunday Night

W wind 10 to 15 kt. Cloudy. Seas around 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.