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Juneau, AK Local Forecast Office

Petersburg AK

Marine Point Forecast

[NOTICE]

Tonight
Low: 49 °F
Light Wind
< 1ft
Friday
High: 64 °F
Light Wind
< 1ft
Friday Night
Low: 51 °F
Light Wind
< 1ft
Saturday
High: 63 °F
Light Wind
< 1ft
Saturday Night
Low: 54 °F
Light Wind
< 1ft
Sunday
High: 66 °F
Light Wind
1ft
Sunday Night
Low: 53 °F
Light Wind
1ft
Monday
High: 58 °F
Light Wind
1ft
Monday Night
Low: 50 °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: 3:47 pm AKDT Jun 11, 2026
Forecast Valid: 9pm AKDT Jun 11, 2026-6pm AKDT Jun 18, 2026

View Nearby Observations

Detailed Forecast

Synopsis: A ridge of high pressure will build over the eastern Gulf Thursday night into Friday, then shift eastward over the inner channels. A gale force low will move into the western Gulf Friday night with a front extending across the central and eastern Gulf through Saturday. Outlook. A stronger low pressure system will track northward into the Gulf Saturday.

Tonight

Variable winds 5 kt or less. Patchy fog after 1am. Seas 1 ft or less.

Friday

Variable winds 5 kt or less. Patchy fog before 7am. Seas 1 ft or less.

Friday Night

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

Saturday

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

Saturday Night

Variable winds 5 kt or less. A chance of showers after 10pm. Seas 1 ft or less.

Sunday

Variable winds 5 kt or less. A chance of showers before 10am, then showers likely after 4pm. Seas around 1 ft.

Sunday Night

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

Monday

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

Monday Night

Variable winds 5 kt or less. Showers. 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.