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Juneau, AK Local Forecast Office

Petersburg AK

Marine Point Forecast

[NOTICE]

Today
High: 48 °F
Light Wind
1ft
Tonight
Low: 37 °F
Light Wind
1ft
Friday
High: 48 °F
Light Wind
1ft
Friday Night
Low: 34 °F
Light Wind
< 1ft
Saturday
High: 47 °F
Light Wind
< 1ft
Saturday Night
Low: 34 °F
Light Wind
< 1ft
Sunday
High: 47 °F
Light Wind
< 1ft
Sunday Night
Low: 35 °F
Light Wind
< 1ft
Monday
High: 46 °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: 6:36 am AKDT Oct 22, 2026
Forecast Valid: 8am AKDT Oct 22, 2026-6pm AKDT Oct 28, 2026

View Nearby Observations

Detailed Forecast

Synopsis: Low pressure weakens in the NW Gulf, with winds and seas continuing to trend down. Onshore flow will continue to bring showers through today. A wind shift to offshore flow is expected late tonight with high pressure building over Canada.

Today

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

Tonight

Variable winds 5 kt or less. A chance of showers before 1am. Patchy fog after 1am. Seas around 1 ft.

Friday

Variable winds 5 kt or less. A slight chance of showers after 10am. Patchy fog before 10am. Seas around 1 ft.

Friday Night

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

Saturday

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

Saturday Night

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

Sunday

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

Sunday Night

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

Monday

Variable winds 5 kt or less. Partly sunny. 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.