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Juneau, AK Local Forecast Office

Petersburg AK

Marine Point Forecast

[NOTICE]

Today
High: 53 °F
Light Wind
1ft
Tonight
Low: 42 °F
Light Wind
1ft
Friday
High: 54 °F
Light Wind
< 1ft
Friday Night
Low: 41 °F
Light Wind
< 1ft
Saturday
High: 54 °F
Light Wind
1ft
Saturday Night
Low: 45 °F
ESE 10kt
2ft
Sunday
High: 54 °F
SE 10kt
2ft
Sunday Night
Low: 47 °F
Light Wind
1-2ft
Monday
High: 55 °F
Light Wind
1-2ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 3:56 am AKDT Oct 1, 2026
Forecast Valid: 6am AKDT Oct 1, 2026-6pm AKDT Oct 7, 2026

View Nearby Observations

Detailed Forecast

Synopsis: Winds around fresh breezes over much of the area Thursday morning. Winds slowly subside through Thursday afternoon, bringing lighter winds Friday. Our next large system moves into the Gulf Friday night into the weekend from the Southwest bringing gale force winds to the gulf waters by Saturday night.

Today

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

Tonight

Variable winds 5 kt or less. Showers likely, mainly before 7pm. Seas around 1 ft.

Friday

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

Friday Night

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

Saturday

Variable winds 5 kt or less. Rain likely, mainly after 1pm. Seas around 1 ft.

Saturday Night

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

Sunday

SE wind around 10 kt. Rain. The rain could be heavy at times. Seas around 2 ft.

Sunday Night

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

Monday

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