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Juneau, AK Local Forecast Office

Petersburg AK

Marine Point Forecast

[NOTICE]

Today
High: 54 °F
Light Wind
< 1ft
Tonight
Low: 42 °F
Light Wind
< 1ft
Saturday
High: 55 °F
Light Wind
< 1ft
Saturday Night
Low: 42 °F
Light Wind
< 1ft
Sunday
High: 54 °F
Light Wind
< 1ft
Sunday Night
Low: 43 °F
SE 15kt
2-3ft
Monday
High: 51 °F
Light Wind
1ft
Monday Night
Low: 42 °F
Light Wind
< 1ft
Tuesday
High: 52 °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: 3:39 pm AKDT May 14, 2026
Forecast Valid: 5am AKDT May 15, 2026-6pm AKDT May 21, 2026

View Nearby Observations

Detailed Forecast

Synopsis: Light winds continue across the area as a ridge moves into the gulf Friday. There continues to be a chance of periods of slightly gusty winds around 15 kts as showers move over the area. A developing gale force system moves into the Gulf late Saturday into Sunday.

Today

Variable winds 5 kt or less. A chance of showers after 10am. Seas 1 ft or less.

Tonight

Variable winds 5 kt or less. A slight chance of showers before 10pm, then a slight chance of showers after 1am. Patchy fog after 4am. Seas 1 ft or less.

Saturday

Variable winds 5 kt or less. A slight chance of showers before 7am, then a slight chance of showers after 10am. Patchy fog before 7am. Seas 1 ft or less.

Saturday Night

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

Sunday

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

Sunday Night

SE wind 10 to 15 kt. Rain. Seas 2 to 3 ft.

Monday

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

Monday Night

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

Tuesday

Variable winds 5 kt or less. Showers 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.