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Juneau, AK Local Forecast Office

Petersburg AK

Marine Point Forecast

[NOTICE]

Overnight
Low: 43 °F
Light Wind
1ft
Friday
High: 55 °F
Light Wind
1ft
Friday Night
Low: 42 °F
Light Wind
< 1ft
Saturday
High: 53 °F
Light Wind
< 1ft
Saturday Night
Low: 43 °F
Light Wind
< 1ft
Sunday
High: 60 °F
Light Wind
< 1ft
Sunday Night
Low: 43 °F
Light Wind
< 1ft
Monday
High: 64 °F
Light Wind
< 1ft
Monday Night
Low: 44 °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: 9:39 pm AKDT Apr 30, 2026
Forecast Valid: 12am AKDT May 1, 2026-6pm AKDT May 7, 2026

View Nearby Observations

Detailed Forecast

Synopsis: A front diminishes over the southern panhandle as ridging develops in the eastern gulf. Another frontal system moving into the eastern gulf Friday into the weekend will bring increased winds and seas to western portions of the eastern gulf and to the northeastern gulf coast. Ridging builds back in the eastern gulf behind the front.

Overnight

Variable winds 5 kt or less. A chance of rain, mainly before 1am. Areas of fog after 1am. Seas around 1 ft.

Friday

Variable winds 5 kt or less. A slight chance of rain between 7am and 10am. Areas of fog before 10am. Seas around 1 ft.

Friday Night

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

Saturday

Variable winds 5 kt or less. A chance of rain. Areas of fog before 7am. Seas 1 ft or less.

Saturday Night

Variable winds 5 kt or less. A chance of rain before 10pm. Seas 1 ft or less.

Sunday

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

Sunday Night

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

Monday

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

Monday Night

Variable winds 5 kt or less. Partly cloudy. 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.