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Juneau, AK Local Forecast Office

Petersburg AK

Marine Point Forecast

[NOTICE]
    • Today

      Today:SSE wind 5 to 10 kt. Showers, mainly after 1pm.   Seas around 1 ft.

      High: 54 °F

      SSE 10kt
      1ft

    • Tonight

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

      Low: 45 °F

      Light Wind
      1ft

    • Tuesday

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

      High: 52 °F

      Light Wind
      1ft

    • Tuesday Night

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

      Low: 45 °F

      Light Wind
      1ft

    • Wednesday

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

      High: 55 °F

      Light Wind
      1ft

    • Wednesday Night

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

      Low: 44 °F

      Light Wind
      1ft

    • Thursday

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

      High: 54 °F

      Light Wind
      1ft

    • Thursday Night

      Thursday Night:Variable winds 5 kt or less. Showers likely.   Seas 1 ft or less.

      Low: 42 °F

      Light Wind
      < 1ft

    • Friday

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

      High: 54 °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: 3:35 am AKDT Sep 28, 2026
Forecast Valid: 5am AKDT Sep 28, 2026-6pm AKDT Oct 4, 2026

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Detailed Forecast


Synopsis: A weakening area of low pressure is leading to 15-20 kt winds and seas up to 9 feet in the Gulf of Alaska. Winds up to 20kts are possible in Lynn Canal today, but winds overall are not expected to be as strong as yesterday with the weakening system. By Wednesday, the next low pressure system and front will approach the area, and bring increasing winds and seas.

Today
SSE wind 5 to 10 kt. Showers, mainly after 1pm. Seas around 1 ft.
Tonight
Variable winds 5 kt or less. Showers. Seas around 1 ft.
Tuesday
Variable winds 5 kt or less. Showers. Seas around 1 ft.
Tuesday Night
Variable winds 5 kt or less. Showers. Seas around 1 ft.
Wednesday
Variable winds 5 kt or less. Showers. Seas around 1 ft.
Wednesday Night
Variable winds 5 kt or less. Showers. Seas around 1 ft.
Thursday
Variable winds 5 kt or less. Showers likely. Seas around 1 ft.
Thursday Night
Variable winds 5 kt or less. Showers likely. Seas 1 ft or less.
Friday
Variable winds 5 kt or less. A chance of showers. 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: 3:35 am AKDT Sep 28, 2026
Forecast Valid: 5am AKDT Sep 28, 2026-6pm AKDT Oct 4, 2026
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