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Juneau, AK Local Forecast Office

Petersburg AK

Marine Point Forecast

[NOTICE]

Today
High: 60 °F
Light Wind
1ft
Tonight
Low: 49 °F
Light Wind
1ft
Thursday
High: 58 °F
Light Wind
1-2ft
Thursday Night
Low: 52 °F
Light Wind
1-2ft
Friday
High: 56 °F
Light Wind
1ft
Friday Night
Low: 50 °F
Light Wind
1ft
Saturday
High: 57 °F
Light Wind
1ft
Saturday Night
Low: 52 °F
Light Wind
1ft
Sunday
High: 58 °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: 7:20 am AKDT Jul 9, 2025
Forecast Valid: 7am AKDT Jul 9, 2025-6pm AKDT Jul 15, 2025

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Detailed Forecast

Synopsis: Westerly onshore flow will continue into Wednesday with brief high pressure building over the inner channels. A Gale force front enters the Gulf Thursday morning, reaching the outer Gulf coast by Thursday afternoon. Strongest marine winds expected along the northern Gulf of Alaska coast by Thursday afternoon.

Today

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

Tonight

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

Thursday

Variable winds 5 kt or less. Rain likely, mainly after 1pm. Patchy fog before 10am. Seas 1 to 2 ft.

Thursday Night

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

Friday

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

Friday Night

Variable winds 5 kt or less. Showers likely, mainly before 4am. Seas around 1 ft.

Saturday

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

Saturday Night

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

Sunday

Variable winds 5 kt or less. Rain likely. 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.