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Juneau, AK Local Forecast Office

Petersburg AK

Marine Point Forecast

[NOTICE]
    • This Afternoon

      This Afternoon:Variable winds 5 kt or less. Mostly sunny. Seas around 1 ft.

      High: 59 °F

      Light Wind
      1ft

    • Tonight

      Tonight:Variable winds 5 kt or less. Partly cloudy. Seas around 1 ft.

      Low: 43 °F

      Light Wind
      1ft

    • Monday

      Monday:Variable winds 5 kt or less. Sunny. Seas 1 ft or less.

      High: 64 °F

      Light Wind
      < 1ft

    • Monday Night

      Monday Night:Variable winds 5 kt or less. Partly cloudy. Seas 1 ft or less.

      Low: 46 °F

      Light Wind
      < 1ft

    • Tuesday

      Tuesday:Variable winds 5 kt or less. Partly sunny. Seas 1 ft or less.

      High: 60 °F

      Light Wind
      < 1ft

    • Tuesday Night

      Tuesday Night:Variable winds 5 kt or less. Mostly cloudy. Seas around 1 ft.

      Low: 42 °F

      Light Wind
      1ft

    • Wednesday

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

      High: 51 °F

      Light Wind
      < 1ft

    • Wednesday Night

      Wednesday Night:Variable winds 5 kt or less. A chance of showers.   Seas 1 ft or less.

      Low: 41 °F

      Light Wind
      < 1ft

    • Thursday

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

      High: 53 °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: 7:32 am AKDT May 3, 2026
Forecast Valid: 3pm AKDT May 3, 2026-6pm AKDT May 9, 2026

View Nearby Observations

Detailed Forecast


Synopsis: A ridge of high pressure sits over the eastern half of the Gulf of Alaska. A low in the western gulf moves north Tuesday, sending a front into the northeastern gulf coast and increasing winds through the inner channels. The ridge of high pressure begins to relax Wednesday but lingers into late week.

This Afternoon
Variable winds 5 kt or less. Mostly sunny. Seas around 1 ft.
Tonight
Variable winds 5 kt or less. Partly cloudy. Seas around 1 ft.
Monday
Variable winds 5 kt or less. Sunny. Seas 1 ft or less.
Monday Night
Variable winds 5 kt or less. Partly cloudy. Seas 1 ft or less.
Tuesday
Variable winds 5 kt or less. Partly sunny. Seas 1 ft or less.
Tuesday Night
Variable winds 5 kt or less. Mostly cloudy. Seas around 1 ft.
Wednesday
Variable winds 5 kt or less. A chance of showers after 10am. Seas 1 ft or less.
Wednesday Night
Variable winds 5 kt or less. A chance of showers. Seas 1 ft or less.
Thursday
Variable winds 5 kt or less. Mostly cloudy. Seas 1 ft or less.

*Notices:

  1. 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.
  2. 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.
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ABOUT THIS FORECAST

Point Forecast: 56.82°N 133°W
Last Update: 7:32 am AKDT May 3, 2026
Forecast Valid: 3pm AKDT May 3, 2026-6pm AKDT May 9, 2026
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