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Juneau, AK Local Forecast Office

Petersburg AK

Marine Point Forecast

[NOTICE]

Tonight
Low: 44 °F
ESE 10kt
2-3ft
Wednesday
High: 49 °F
Light Wind
1-2ft
Wednesday Night
Low: 43 °F
Light Wind
1-2ft
Thursday
High: 47 °F
ESE 15kt
2-3ft
Thursday Night
Low: 40 °F
ESE 15kt
2-3ft
Friday
High: 47 °F
SE 10kt
2ft
Friday Night
Low: 39 °F
SE 10kt
1-2ft
Saturday
High: 46 °F
Light Wind
1-2ft
Saturday Night
Low: 36 °F
ESE 10kt
2ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 2:11 pm AKST Nov 3, 2026
Forecast Valid: 6pm AKST Nov 3, 2026-6pm AKST Nov 10, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY THROUGH LATE TONIGHT...

Synopsis: A low situated just east of Kodiak Island will continue to move NW and weaken over the next 24hrs. The associated frontal system will continue to move through the northern and eastern portions of the Gulf of Alaska. Winds will slowly ease over the next 12 hours as will combined seas in the Gulf. The next significant weather system will begin moving into the area Thursday, unlike the system today this low will track more towards the AK Panhandle bringing in another round of enhanced winds and seas.

Tonight

ESE wind 5 to 10 kt. Rain. The rain could be heavy at times. Seas 2 to 3 ft.

Wednesday

Variable winds 5 kt or less. Rain, mainly before noon. Seas 1 to 2 ft.

Wednesday Night

Variable winds 5 kt or less. Rain. Seas 1 to 2 ft.

Thursday

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

Thursday Night

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

Friday

SE wind around 10 kt. Rain. Seas around 2 ft.

Friday Night

SE wind 5 to 10 kt. Rain. Seas 1 to 2 ft.

Saturday

Variable winds 5 kt or less. Rain likely. Seas 1 to 2 ft.

Saturday Night

ENE wind 5 to 10 kt becoming ESE after midnight. Rain. Seas around 2 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.