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Juneau, AK Local Forecast Office

Petersburg AK

Marine Point Forecast

[NOTICE]

Today
High: 54 °F
Light Wind
< 1ft
Tonight
Low: 38 °F
Light Wind
< 1ft
Sunday
High: 50 °F
Light Wind
< 1ft
Sunday Night
Low: 44 °F
Light Wind
1ft
Columbus Day
High: 53 °F
Light Wind
1ft
Monday Night
Low: 44 °F
Light Wind
< 1ft
Tuesday
High: 53 °F
Light Wind
< 1ft
Tuesday Night
Low: 42 °F
Light Wind
< 1ft
Wednesday
High: 53 °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: 6:41 am AKDT Oct 10, 2026
Forecast Valid: 11am AKDT Oct 10, 2026-6pm AKDT Oct 16, 2026

View Nearby Observations

Detailed Forecast

Synopsis: Relatively benign marine conditions today with northerly winds and seas diminishing. A gale force front moves through Saturday night into Sunday. Widespread 25-35 knots and seas 10-14+ feet along the outside waters and up to 25 knots for the inside waters will accompany this system. Outlook: a stronger system moves in mid to late next week.

Today

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

Tonight

Variable winds 5 kt or less. Increasing clouds. Seas 1 ft or less.

Sunday

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

Sunday Night

Variable winds 5 kt or less. Rain, mainly after 7pm. Seas around 1 ft.

Columbus Day

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

Monday Night

Variable winds 5 kt or less. A chance of rain. Patchy fog after 1am. Seas 1 ft or less.

Tuesday

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

Tuesday Night

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

Wednesday

Variable winds 5 kt or less. A chance of rain. 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.