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Juneau, AK Local Forecast Office

Petersburg AK

Marine Point Forecast

[NOTICE]

Today
High: 47 °F
SE 10kt
2ft
Tonight
Low: 41 °F
Light Wind
1ft
Sunday
High: 49 °F
Light Wind
1ft
Sunday Night
Low: 38 °F
Light Wind
< 1ft
Monday
High: 48 °F
Light Wind
< 1ft
Monday Night
Low: 39 °F
Light Wind
< 1ft
Tuesday
High: 49 °F
Light Wind
< 1ft
Tuesday Night
Low: 37 °F
Light Wind
< 1ft
Wednesday
High: 52 °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: 11:01 pm AKDT Apr 17, 2026
Forecast Valid: 6am AKDT Apr 18, 2026-6pm AKDT Apr 24, 2026

View Nearby Observations

Detailed Forecast

Synopsis: A weak front over the eastern Gulf moves onshore over the Panhandle and dissipates Sunday morning. A stronger area of low pressure moves from the northern Pacific passing south of Haida Gwaii on Sunday.

Today

SE wind 5 to 10 kt. Rain. Seas around 2 ft.

Tonight

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

Sunday

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

Sunday Night

Variable winds 5 kt or less. A chance of rain before 10pm. Patchy fog after 4am. Seas 1 ft or less.

Monday

Variable winds 5 kt or less. Rain likely, mainly after 4pm. Patchy fog before 7am. Seas 1 ft or less.

Monday Night

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

Tuesday

Variable winds 5 kt or less. A chance of rain after 10am. 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. Mostly sunny. 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.