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Anchorage, AK Local Forecast Office

39NM NW Seguam Island AK

Marine Point Forecast

[NOTICE]

Saturday
High: 40 °F
SSE 20kt
3-5ft
Saturday Night
Low: 39 °F
SSE 25kt
6ft

Small Craft Advisory
Sunday
High: 40 °F
SSE 25kt
7ft

Small Craft Advisory
Sunday Night
Low: 38 °F
S 15kt
5-6ft
Monday
High: 39 °F
S 10kt
4ft
Monday Night
Low: 36 °F
SSE 20kt
4ft
Tuesday
High: 39 °F
SSW 15kt
5ft
Tuesday Night
Low: 37 °F
WNW 15kt
< 1ft
Wednesday
High: 40 °F
NW 15kt
< 1ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 3:37 am AKDT Apr 4, 2026
Forecast Valid: 4am AKDT Apr 4, 2026-6pm AKDT Apr 10, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY THROUGH SUNDAY...

Synopsis: A 995 mb Kamchatka low will move into the Bering 290 nm NW of Shemya by Sat afternoon and move to 340 nm NW of Shemya at 1003 mb by Sun afternoon as its front sweeps across the Aleutians. A 993 mb low moves to 130 nm NE of Shemya Mon morning.

Saturday

SSE wind 15 to 20 kt. A slight chance of snow before 7am, then a slight chance of rain and snow between 7am and 1pm, then a slight chance of rain after 1pm. Seas 3 to 5 ft.

Saturday Night

SSE wind 20 to 25 kt. Rain. Seas around 6 ft.

Sunday

SSE wind around 25 kt. Rain. Seas around 7 ft.

Sunday Night

S wind 10 to 15 kt becoming WSW after midnight. Rain, mainly before 1am. Seas 5 to 6 ft.

Monday

S wind around 10 kt. Scattered showers before 7am, then a chance of rain between 7am and 1pm, then showers likely after 1pm. Seas around 4 ft.

Monday Night

SSE wind 15 to 20 kt. Showers likely, mainly before 1am. Seas around 4 ft.

Tuesday

SSW wind 10 to 15 kt becoming W in the morning. Rain likely, mainly before 4pm. Seas around 5 ft.

Tuesday Night

WNW wind 10 to 15 kt. Rain likely. Seas 1 ft or less.

Wednesday

NW wind around 15 kt. Rain likely. Seas 1 ft or less.

*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.