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Juneau, AK Local Forecast Office

Petersburg AK

Marine Point Forecast

[NOTICE]

Today
High: 50 °F
Light Wind
1ft
Tonight
Low: 42 °F
Light Wind
< 1ft
Wednesday
High: 52 °F
Light Wind
1ft
Wednesday Night
Low: 45 °F
Light Wind
1ft
Thursday
High: 54 °F
ESE 10kt
2-3ft
Thursday Night
Low: 48 °F
SE 10kt
2ft
Friday
High: 53 °F
Light Wind
1ft
Friday Night
Low: 43 °F
Light Wind
1ft
Saturday
High: 50 °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: 6:55 am AKDT Oct 13, 2026
Forecast Valid: 10am AKDT Oct 13, 2026-6pm AKDT Oct 19, 2026

View Nearby Observations

Detailed Forecast

Synopsis: Winds along southern ocean entrances increase Tuesday as a northward moving low clips the southern panhandle. Up north, winds strengthen near Cape St. Elias to Icy Bay as a weak barrier jet forms. By early Thursday, a strong gale force low will impact the Gulf and coastal waters.

Today

Variable winds 5 kt or less. A chance of rain, mainly after 1pm. Seas around 1 ft.

Tonight

Variable winds 5 kt or less. A chance of rain, mainly before 7pm. Patchy fog after 1am. Seas 1 ft or less.

Wednesday

Variable winds 5 kt or less. Patchy fog before 7am. Seas around 1 ft.

Wednesday Night

Variable winds 5 kt or less. Rain, mainly after 10pm. Seas around 1 ft.

Thursday

ESE wind around 10 kt. Rain. The rain could be heavy at times. Seas 2 to 3 ft.

Thursday Night

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

Friday

Variable winds 5 kt or less. Rain. The rain could be heavy at times. Seas around 1 ft.

Friday Night

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

Saturday

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.