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Anchorage, AK Local Forecast Office

39NM NW Seguam Island AK

Marine Point Forecast

[NOTICE]

Today
High: 48 °F
W 15kt
3ft
Tonight
Low: 43 °F
WSW 20kt
3ft
Tuesday
High: 48 °F
W 20kt
4-5ft
Tuesday Night
Low: 42 °F
WNW 15kt
3-4ft
Wednesday
High: 47 °F
WSW 10kt
3ft
Wednesday Night
Low: 43 °F
SE 10kt
2-3ft
Thursday
High: 47 °F
E 15kt
2-4ft
Thursday Night
Low: 44 °F
ESE 15kt
4ft
Friday
High: 47 °F
SSE 10kt
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: 6:50 am AKDT Jul 6, 2026
Forecast Valid: 10am AKDT Jul 6, 2026-6pm AKDT Jul 12, 2026

View Nearby Observations

Detailed Forecast

Synopsis: A 1009 mb low 120 nm E of Shemya moves to 100 nm W of St. George at 1004 mb by Tue morning and continues to 90 nm S of Kipnuk at 1002 mb by Wed morning.

Today

SSE wind 5 to 15 kt becoming W in the afternoon. A chance of rain, mainly before 1pm. Areas of fog. Seas around 3 ft.

Tonight

WSW wind 15 to 20 kt. A slight chance of rain after 4am. Patchy fog. Seas around 3 ft.

Tuesday

W wind around 20 kt. A slight chance of rain before 1pm. Patchy fog before 10am. Seas 4 to 5 ft.

Tuesday Night

WNW wind 10 to 15 kt. Cloudy. Seas 3 to 4 ft.

Wednesday

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

Wednesday Night

SSW wind 5 to 10 kt becoming SE after midnight. A chance of showers after 4am. Seas 2 to 3 ft.

Thursday

E wind around 15 kt. Showers likely, mainly after 10am. Seas 2 to 4 ft.

Thursday Night

ESE wind 10 to 15 kt becoming SSE in the evening. Showers likely. Seas around 4 ft.

Friday

SSE wind around 10 kt becoming NE in the morning. 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.