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Juneau, AK Local Forecast Office

Petersburg AK

Marine Point Forecast

[NOTICE]

Overnight
Low: 51 °F
Light Wind
1ft
Sunday
High: 61 °F
Light Wind
1ft
Sunday Night
Low: 51 °F
Light Wind
< 1ft
Monday
High: 64 °F
Light Wind
1ft
Monday Night
Low: 52 °F
Light Wind
1ft
Tuesday
High: 65 °F
Light Wind
1ft
Tuesday Night
Low: 52 °F
Light Wind
1ft
Wednesday
High: 66 °F
Light Wind
1ft
Wednesday Night
Low: 54 °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: 5:00 pm AKDT Jul 12, 2025
Forecast Valid: 11pm AKDT Jul 12, 2025-6pm AKDT Jul 19, 2025

View Nearby Observations

Detailed Forecast

Synopsis: An area of low pressure is currently 40 NM off the coast of the southern tip of Baranof Island. This low will continue to bring enhanced winds to the panhandle, then will gradually diminish through Sunday. A ridge of high pressure builds over the gulf on Monday.

Overnight

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

Sunday

Variable winds 5 kt or less. Rain, mainly before 10am. Seas around 1 ft.

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 around 1 ft.

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.

Tuesday Night

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

Wednesday

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

Wednesday Night

Variable winds 5 kt or less. Mostly cloudy. 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.