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Juneau, AK Local Forecast Office

Petersburg AK

Marine Point Forecast

[NOTICE]

Wednesday
High: 39 °F
S 10kt
1-2ft
Wednesday Night
Low: 24 °F
Light Wind
1-2ft
Thursday
High: 32 °F
Light Wind
1ft
Thursday Night
Low: 21 °F
Light Wind
< 1ft
Friday
High: 34 °F
Light Wind
< 1ft
Friday Night
Low: 23 °F
Light Wind
< 1ft
Saturday
High: 35 °F
Light Wind
< 1ft
Saturday Night
Low: 29 °F
Light Wind
1ft
Sunday
High: 39 °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: 9:34 pm AKST Feb 24, 2026
Forecast Valid: 3am AKST Feb 25, 2026-6pm AKST Mar 3, 2026

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Detailed Forecast

...SMALL CRAFT ADVISORY THROUGH THIS AFTERNOON...

Synopsis: A developing low in the northern gulf will remain nearly stationary through mid week. It will then drift to the SE late week. This will bring increasing westerly winds for the gulf waters through the week and periods of southerly winds for the inner channels. Outflow conditions briefly return Thursday into Thursday night.

Wednesday

S wind 5 to 10 kt. Rain and snow showers. Seas 1 to 2 ft.

Wednesday Night

Variable winds 5 kt or less. Rain and snow showers, becoming all snow after 9pm. Seas 1 to 2 ft.

Thursday

Variable winds 5 kt or less. Snow showers likely, mainly before 3pm. Areas of freezing fog before noon. Seas around 1 ft.

Thursday Night

Variable winds 5 kt or less. A chance of snow showers before 3am. Patchy freezing fog after 3am. Seas 1 ft or less.

Friday

Variable winds 5 kt or less. Patchy freezing fog before 9am. Seas 1 ft or less.

Friday Night

Variable winds 5 kt or less. A chance of snow after 3am. Seas 1 ft or less.

Saturday

Variable winds 5 kt or less. Snow, mainly after 9am. Seas 1 ft or less.

Saturday Night

Variable winds 5 kt or less. Snow before 3am, then rain and snow likely. Seas around 1 ft.

Sunday

Variable winds 5 kt or less. Rain and snow. 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.