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Anchorage, AK Local Forecast Office

39NM NW Seguam Island AK

Marine Point Forecast

[NOTICE]

This Afternoon
High: 44 °F
SSW 10kt
3ft
Tonight
Low: 42 °F
S 10kt
2-3ft
Monday
High: 47 °F
SE 20kt
3ft
Monday Night
Low: 43 °F
ESE 25kt
4-5ft

Small Craft Advisory
Tuesday
High: 46 °F
SSW 20kt
4-5ft
Tuesday Night
Low: 42 °F
SSW 25kt
5-6ft
Wednesday
High: 45 °F
SSW 25kt
6ft
Wednesday Night
Low: 42 °F
WSW 25kt
5-6ft
Thursday
High: 45 °F
WNW 20kt
3-4ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 3:11 pm AKDT Jun 28, 2026
Forecast Valid: 4pm AKDT Jun 28, 2026-6pm AKDT Jul 4, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY MONDAY AND MONDAY NIGHT...

Synopsis: A 1014 mb low 100 nm W of Nunivak Island shortly dissipates. Its front shortly moves inland. A 986 mb low arrives at 300 nm W of Attu by Mon morning and moves near Shemya by Tue afternoon. Its front spreads over the Aleutians Mon morning through Tue afternoon.

This Afternoon

SSW wind around 10 kt. Areas of fog. Seas around 3 ft.

Tonight

S wind 5 to 10 kt. Areas of fog before 10pm. Seas 2 to 3 ft.

Monday

SE wind 15 to 20 kt. Rain, mainly after 4pm. Seas around 3 ft.

Monday Night

ESE wind 20 to 25 kt becoming S after midnight. Rain, mainly before 1am. Seas 4 to 5 ft.

Tuesday

SSW wind around 20 kt, with gusts as high as 25 kt. Cloudy. Seas 4 to 5 ft.

Tuesday Night

SSW wind around 25 kt, with gusts as high as 35 kt. Cloudy. Seas 5 to 6 ft.

Wednesday

SSW wind 20 to 25 kt, with gusts as high as 35 kt. A chance of rain. Seas around 6 ft.

Wednesday Night

WSW wind 20 to 25 kt. Showers likely. Seas 5 to 6 ft.

Thursday

WNW wind around 20 kt. A chance of showers. Seas 3 to 4 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.