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Juneau, AK Local Forecast Office

Petersburg AK

Marine Point Forecast

[NOTICE]

Tonight
Low: 44 °F
Light Wind
2ft
Saturday
High: 51 °F
SE 10kt
2ft
Saturday Night
Low: 41 °F
ESE 10kt
2ft
Sunday
High: 49 °F
Light Wind
1-2ft
Sunday Night
Low: 41 °F
Light Wind
1ft
Monday
High: 52 °F
Light Wind
< 1ft
Monday Night
Low: 42 °F
Light Wind
< 1ft
Tuesday
High: 57 °F
Light Wind
< 1ft
Tuesday 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: 2:30 pm AKDT May 8, 2026
Forecast Valid: 10pm AKDT May 8, 2026-6pm AKDT May 15, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY THROUGH SATURDAY AFTERNOON...

Synopsis: A gale force low will continue to lift north into the Gulf, increasing winds from south to north. A gale force front is currently moving northward along our coast continuing through the day Friday. Winds will continue to increase as the low moves northward with strongest winds impacting the eastern Gulf and coastal waters Saturday. Seas could reach as high as 15 feet to 18 feet in outer coastal waters and the Gulf. Winds and seas will subside Saturday evening into Sunday.

Tonight

Variable winds 5 kt or less. Showers. Seas around 2 ft.

Saturday

SE wind around 10 kt. Showers and possibly a thunderstorm. Seas around 2 ft.

Saturday Night

ESE wind around 10 kt. Showers before 1am, then rain after 1am. Seas around 2 ft.

Sunday

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

Sunday Night

Variable winds 5 kt or less. Rain. Patchy fog after 10pm. Seas around 1 ft.

Monday

Variable winds 5 kt or less. Rain, mainly before 4pm. Seas 1 ft or less.

Monday Night

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

Tuesday

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

Tuesday 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.