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Juneau, AK Local Forecast Office

Petersburg AK

Marine Point Forecast

[NOTICE]

Overnight
Low: 49 °F
Light Wind
1ft
Monday
High: 54 °F
Light Wind
1ft
Monday Night
Low: 47 °F
Light Wind
1-2ft
Tuesday
High: 54 °F
SE 10kt
1-2ft
Tuesday Night
Low: 46 °F
Light Wind
1ft
Wednesday
High: 54 °F
Light Wind
< 1ft
Wednesday Night
Low: 44 °F
Light Wind
< 1ft
Thursday
High: 52 °F
Light Wind
< 1ft
Thursday Night
Low: 43 °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: 8:09 pm AKDT Oct 4, 2026
Forecast Valid: 11pm AKDT Oct 4, 2026-6pm AKDT Oct 11, 2026

View Nearby Observations

Detailed Forecast

Synopsis: Winds expected to increase briefly Sunday night as a secondary shortwave moves through. Monday brings more rain and strong, gusty winds with another shortwave before winds settle to a gentle breeze Tuesday.

Overnight

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

Monday

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

Monday Night

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

Tuesday

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

Tuesday Night

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

Wednesday

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

Wednesday Night

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

Thursday

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

Thursday Night

Variable winds 5 kt or less. Rain likely. 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.