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Juneau, AK Local Forecast Office

Petersburg AK

Marine Point Forecast

[NOTICE]

Today
High: 62 °F
Light Wind
1ft
Tonight
Low: 51 °F
Light Wind
1ft
Sunday
High: 58 °F
Light Wind
1ft
Sunday Night
Low: 51 °F
Light Wind
1ft
Monday
High: 60 °F
Light Wind
1ft
Monday Night
Low: 51 °F
Light Wind
< 1ft
Tuesday
High: 63 °F
Light Wind
< 1ft
Tuesday Night
Low: 51 °F
Light Wind
< 1ft
Wednesday
High: 61 °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: 8:47 am AKDT Aug 22, 2026
Forecast Valid: 9am AKDT Aug 22, 2026-6pm AKDT Aug 28, 2026

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Detailed Forecast

Synopsis: A front is moving through Southeast Alaska early Saturday morning, with the strongest winds in Lynn Canal. After this system dissipates, another low pressure system moving into the Gulf of Alaska will bring winds up to 25 kts in the eastern Gulf. As the system moves toward the Panhandle, expect stronger winds in the Southern inner channels.

Today

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

Tonight

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

Sunday

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

Sunday Night

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

Monday

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

Monday Night

Variable winds 5 kt or less. Rain, mainly before 10pm. Patchy fog after 1am. Seas 1 ft or less.

Tuesday

Variable winds 5 kt or less. A chance of showers between 10am and 4pm. Patchy fog before 10am. Seas 1 ft or less.

Tuesday Night

Variable winds 5 kt or less. Patchy fog after 4am. Seas 1 ft or less.

Wednesday

Variable winds 5 kt or less. A chance of showers. Patchy fog before 10am. 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.