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Juneau, AK Local Forecast Office

Petersburg AK

Marine Point Forecast

[NOTICE]

This Afternoon
High: 50 °F
Light Wind
1ft
Tonight
Low: 37 °F
ESE 10kt
1-2ft
Friday
High: 44 °F
ESE 10kt
1ft
Friday Night
Low: 39 °F
Light Wind
1ft
Saturday
High: 44 °F
Light Wind
1ft
Saturday Night
Low: 37 °F
Light Wind
< 1ft
Sunday
High: 44 °F
Light Wind
< 1ft
Sunday Night
Low: 38 °F
Light Wind
< 1ft
Monday
High: 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: 3:23 pm AKDT Apr 2, 2026
Forecast Valid: 4pm AKDT Apr 2, 2026-6pm AKDT Apr 8, 2026

View Nearby Observations

Detailed Forecast

Synopsis: Another low and front will move into the gulf raising winds to strong to possibly gales and seas increasing to 9 to 12 ft over the outside waters into Friday. Fresh to strong southerlies expected to develop as well, with gales possibly developing across southern Clarence Strait late tonight. Offshore/outflow winds will pick up with the approach of the low, becoming southerly Friday as the front lifts north.

This Afternoon

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

Tonight

ESE wind 5 to 10 kt. Rain and snow, mainly after 7pm. Seas 1 to 2 ft.

Friday

ESE wind 5 to 10 kt. Rain and snow, becoming all rain after 7am. Seas around 1 ft.

Friday Night

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

Saturday

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

Saturday Night

Variable winds 5 kt or less. Showers, mainly before 4am. Patchy fog after 1am. Seas 1 ft or less.

Sunday

Variable winds 5 kt or less. Rain likely, mainly after 10am. Seas 1 ft or less.

Sunday Night

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

Monday

Variable winds 5 kt or less. Rain. 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.