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Juneau, AK Local Forecast Office

Petersburg AK

Marine Point Forecast

[NOTICE]

Today
High: 52 °F
Light Wind
1ft
Tonight
Low: 42 °F
Light Wind
1ft
Saturday
High: 49 °F
Light Wind
1-2ft
Saturday Night
Low: 42 °F
Light Wind
1ft
Sunday
High: 48 °F
Light Wind
1ft
Sunday Night
Low: 39 °F
Light Wind
< 1ft
Monday
High: 48 °F
Light Wind
< 1ft
Monday Night
Low: 39 °F
Light Wind
1ft
Tuesday
High: 48 °F
SE 10kt
1-2ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 6:47 am AKDT Oct 16, 2026
Forecast Valid: 7am AKDT Oct 16, 2026-6pm AKDT Oct 22, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY THROUGH THIS MORNING...

Synopsis: Winds have begun to diminish across the gulf, but remain elevated across the inner channels as the current system pushes inland. As this system moves northward, winds across the inner channels will become southerly. Gusty conditions will continue across the central and northern inner channels through Friday morning before an overall diminishing trend. Late Friday, gulf winds will increase once again as the next low approaches.

Today

Variable winds 5 kt or less. Rain and possibly a thunderstorm before 1pm, then showers and possibly a thunderstorm, mainly after 1pm. Seas around 1 ft.

Tonight

Variable winds 5 kt or less. Showers and possibly a thunderstorm before 10pm, then rain likely after 10pm. Seas around 1 ft.

Saturday

Variable winds 5 kt or less. Rain. Seas 1 to 2 ft.

Saturday Night

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

Sunday

Variable winds 5 kt or less. Rain likely. Seas around 1 ft.

Sunday Night

Variable winds 5 kt or less. Rain likely, mainly before 10pm. Seas 1 ft or less.

Monday

Variable winds 5 kt or less. A chance of rain before 10am. Seas 1 ft or less.

Monday Night

Variable winds 5 kt or less. A chance of rain. Seas around 1 ft.

Tuesday

SE wind 5 to 10 kt. Rain. Seas 1 to 2 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.