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Juneau, AK Local Forecast Office

Petersburg AK

Marine Point Forecast

[NOTICE]

Tonight
Low: 41 °F
SSE 15kt
2-4ft
Wednesday
High: 47 °F
ESE 10kt
2ft
Wednesday Night
Low: 38 °F
ESE 10kt
2ft
Thursday
High: 45 °F
Light Wind
1ft
Thursday Night
Low: 36 °F
Light Wind
1ft
Friday
High: 48 °F
Light Wind
1ft
Friday Night
Low: 33 °F
Light Wind
1ft
Saturday
High: 47 °F
Light Wind
1ft
Saturday Night
Low: 33 °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: 3:26 pm AKDT Oct 20, 2026
Forecast Valid: 6pm AKDT Oct 20, 2026-6pm AKDT Oct 27, 2026

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Detailed Forecast

...GALE WARNING THROUGH THIS EVENING...

Synopsis: The second front sweeps east across the eastern gulf and Panhandle Tuesday. Drier weather overall, with Cooler air aloft will prep atmosphere for more potential Thunder near the coastline over the north Gulf Tuesday evening to Wednesday.

Tonight

SSE wind 5 to 15 kt, with gusts as high as 35 kt. Rain, mainly before 1am. The rain could be heavy at times. Seas 2 to 4 ft.

Wednesday

ESE wind around 10 kt. Showers. Seas around 2 ft.

Wednesday Night

ESE wind 5 to 10 kt. Showers. Seas around 2 ft.

Thursday

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

Thursday Night

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

Friday

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

Friday Night

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

Saturday

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

Saturday 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.