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Juneau, AK Local Forecast Office

Petersburg AK

Marine Point Forecast

[NOTICE]

Today
High: 38 °F
Light Wind
1-2ft
Tonight
Low: 34 °F
Light Wind
1-2ft
Wednesday
High: 40 °F
S 10kt
1ft
Wednesday Night
Low: 23 °F
Light Wind
< 1ft
Thursday
High: 33 °F
Light Wind
1ft
Thursday Night
Low: 21 °F
Light Wind
< 1ft
Friday
High: 33 °F
Light Wind
< 1ft
Friday Night
Low: 23 °F
Light Wind
< 1ft
Saturday
High: 35 °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: 4:07 am AKST Feb 24, 2026
Forecast Valid: 6am AKST Feb 24, 2026-6pm AKST Mar 2, 2026

View Nearby Observations

Detailed Forecast

Synopsis: A developing low in the northerly 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.

Today

Variable winds 5 kt or less. Rain and snow, becoming all rain after 3pm. Patchy fog. Seas 1 to 2 ft.

Tonight

Variable winds 5 kt or less. Rain likely, mainly after midnight. Patchy fog. Seas 1 to 2 ft.

Wednesday

S wind 5 to 10 kt. Snow showers, possibly mixed with rain, becoming all snow after 3pm. Seas around 1 ft.

Wednesday Night

Variable winds 5 kt or less. Snow showers. Seas 1 ft or less.

Thursday

Variable winds 5 kt or less. Snow showers likely, mainly before 3pm. Seas around 1 ft.

Thursday Night

Variable winds 5 kt or less. A chance of snow showers before 9pm. Seas 1 ft or less.

Friday

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

Friday Night

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

Saturday

Variable winds 5 kt or less. Snow. 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.