For More Weather Information:

Anchorage, AK Local Forecast Office

47NM SSE Shemya AK

Marine Point Forecast

[NOTICE]

Today
High: 48 °F
ENE 15kt
4-5ft
Tonight
Low: 44 °F
NE 10kt
3-4ft
Thursday
High: 49 °F
N 10kt
3-5ft
Thursday Night
Low: 45 °F
WNW 20kt
6-8ft
Friday
High: 47 °F
W 20kt
7-8ft
Friday Night
Low: 44 °F
NW 15kt
4-6ft
Saturday
High: 48 °F
WNW 15kt
4ft
Saturday Night
Low: 45 °F
NW 10kt
3ft
Sunday
High: 48 °F
S 25kt
3ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 4:43 am AKDT Jul 9, 2025
Forecast Valid: 8am AKDT Jul 9, 2025-6pm AKDT Jul 15, 2025

View Nearby Observations

Detailed Forecast

Synopsis: A 999 mb low 90 nm NW of Unalaska tracks across the Alaska Peninsula and into the western Gulf at 999 mb through Thu morning. A 1005 mb western Bering low on Wed moves to 130 nm NE of Shemya at 1005 mb by Fri morning.

Today

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

Tonight

NE wind around 10 kt, with gusts as high as 20 kt. Mostly cloudy. Seas 3 to 4 ft.

Thursday

NNE wind around 10 kt becoming NNW in the afternoon. Mostly cloudy. Seas 3 to 5 ft.

Thursday Night

WNW wind 10 to 20 kt. Mostly cloudy. Seas 6 to 8 ft.

Friday

W wind around 20 kt, with gusts as high as 25 kt. Cloudy. Seas 7 to 8 ft.

Friday Night

NW wind around 15 kt. Cloudy. Seas 4 to 6 ft.

Saturday

WNW wind around 15 kt. Cloudy. Seas around 4 ft.

Saturday Night

NW wind 5 to 10 kt becoming WSW in the evening. A chance of rain. Seas around 3 ft.

Sunday

S wind 15 to 25 kt. A chance of rain. Seas around 3 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.