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Juneau, AK Local Forecast Office

Petersburg AK

Marine Point Forecast

[NOTICE]

This Afternoon
High: 46 °F
SE 10kt
2ft
Tonight
Low: 41 °F
SE 10kt
1-2ft
Saturday
High: 46 °F
Light Wind
1ft
Saturday Night
Low: 37 °F
SE 10kt
1-2ft
Sunday
High: 44 °F
Light Wind
1-2ft
Sunday Night
Low: 37 °F
Light Wind
1ft
Monday
High: 42 °F
Light Wind
1ft
Monday Night
Low: 37 °F
Light Wind
1ft
Tuesday
High: 42 °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: 3:10 pm AKST Feb 6, 2026
Forecast Valid: 3pm AKST Feb 6, 2026-6pm AKST Feb 12, 2026

View Nearby Observations

Detailed Forecast

Synopsis: Increased SE winds continue behind frontal passage before decreasing by Saturday morning. Sharp increase in wind speeds and gusts to near gale as the next front passes from S to N on Saturday night, with a shift from SE to a S to SW direction. Winds diminish into Sunday as waves of showers follow behind the front. A gale force system is expected midweek.

This Afternoon

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

Tonight

SE wind 5 to 10 kt. Rain. Seas 1 to 2 ft.

Saturday

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

Saturday Night

SE wind 5 to 10 kt. Showers. Seas 1 to 2 ft.

Sunday

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

Sunday Night

Variable winds 5 kt or less. Showers. Patchy fog after 9pm. Seas around 1 ft.

Monday

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

Monday Night

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

Tuesday

Variable winds 5 kt or less. 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.