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Juneau, AK Local Forecast Office

Petersburg AK

Marine Point Forecast

[NOTICE]

Tonight
Low: 43 °F
Light Wind
< 1ft
Thursday
High: 52 °F
Light Wind
< 1ft
Thursday Night
Low: 40 °F
Light Wind
< 1ft
Friday
High: 54 °F
Light Wind
< 1ft
Friday Night
Low: 37 °F
Light Wind
< 1ft
Saturday
High: 55 °F
Light Wind
< 1ft
Saturday Night
Low: 40 °F
Light Wind
< 1ft
Sunday
High: 51 °F
Light Wind
< 1ft
Sunday 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: 8:13 pm AKDT Oct 7, 2026
Forecast Valid: 8pm AKDT Oct 7, 2026-6pm AKDT Oct 14, 2026

View Nearby Observations

Detailed Forecast

Synopsis: A brief break in winds tonight through Thursday morning is expected, with areas of fog mainly in the central and northern inner channel waters. Northerly winds build across the coasts and inner channels into Friday before relax Saturday and shifting southerly.

Tonight

Variable winds 5 kt or less. Showers likely, mainly before 1am. Seas 1 ft or less.

Thursday

Variable winds 5 kt or less. A chance of showers, mainly before 10am. Seas 1 ft or less.

Thursday Night

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

Friday

Variable winds 5 kt or less. Areas of fog before 10am. Seas 1 ft or less.

Friday Night

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

Saturday

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

Saturday Night

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

Sunday

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

Sunday Night

Variable winds 5 kt or less. A chance of rain. 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.