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Juneau, AK Local Forecast Office

Petersburg AK

Marine Point Forecast

[NOTICE]

This Afternoon
High: 53 °F
Light Wind
< 1ft
Tonight
Low: 42 °F
Light Wind
< 1ft
Saturday
High: 51 °F
Light Wind
1ft
Saturday Night
Low: 42 °F
Light Wind
< 1ft
Sunday
High: 56 °F
Light Wind
< 1ft
Sunday Night
Low: 45 °F
Light Wind
< 1ft
Monday
High: 64 °F
Light Wind
< 1ft
Monday Night
Low: 50 °F
Light Wind
1ft
Tuesday
High: 72 °F
Light Wind
1ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 11:34 am AKDT May 29, 2026
Forecast Valid: 2pm AKDT May 29, 2026-6pm AKDT Jun 4, 2026

View Nearby Observations

Detailed Forecast

Synopsis: A low in the vicinity of Prince William Sound will remain quasi-stationary. Shortwaves rotating around the low Saturday will bring occasional periods of more breezy conditions along with rain showers and potential thunderstorms. Maritime conditions will improve by Sunday as the low weakens and a weak ridge moves over SE AK.

This Afternoon

Variable winds 5 kt or less. Showers, mainly before 4pm. Seas 1 ft or less.

Tonight

Variable winds 5 kt or less. Showers likely, mainly after 4am. Seas 1 ft or less.

Saturday

Variable winds 5 kt or less. Showers, with thunderstorms also possible after 4pm. Seas around 1 ft.

Saturday Night

Variable winds 5 kt or less. Showers. Seas 1 ft or less.

Sunday

Variable winds 5 kt or less. Showers likely, mainly before 4pm. Seas 1 ft or less.

Sunday Night

Variable winds 5 kt or less. A chance of showers before 10pm. Seas 1 ft or less.

Monday

Variable winds 5 kt or less. Mostly sunny. Seas 1 ft or less.

Monday Night

Variable winds 5 kt or less. Partly cloudy. Seas around 1 ft.

Tuesday

Variable winds 5 kt or less. Mostly sunny. Seas around 1 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.