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Juneau, AK Local Forecast Office

Petersburg AK

Marine Point Forecast

[NOTICE]
    • Monday

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

      High: 71 °F

      Light Wind
      < 1ft

    • Monday Night

      Monday Night:Variable winds 5 kt or less. Mostly clear. Seas 1 ft or less.

      Low: 53 °F

      Light Wind
      < 1ft

    • Tuesday

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

      High: 69 °F

      Light Wind
      < 1ft

    • Tuesday Night

      Tuesday Night:NW wind 5 to 10 kt. Partly cloudy. Seas 1 to 2 ft.

      Low: 53 °F

      NW 10kt
      1-2ft

    • Wednesday

      Wednesday:NW wind 5 to 10 kt. Mostly sunny. Seas around 2 ft.

      High: 64 °F

      NW 10kt
      2ft

    • Wednesday Night

      Wednesday Night:NW wind 5 to 10 kt. Mostly cloudy. Seas 1 to 2 ft.

      Low: 52 °F

      NW 10kt
      1-2ft

    • Thursday

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

      High: 63 °F

      Light Wind
      1ft

    • Thursday Night

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

      Low: 51 °F

      Light Wind
      < 1ft

    • Friday

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

      High: 60 °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: 3:58 am AKDT Jul 20, 2026
Forecast Valid: 4am AKDT Jul 20, 2026-6pm AKDT Jul 26, 2026

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Detailed Forecast


Synopsis: High pressure in the Gulf of Alaska will persist for much of the week, bringing broad westerly to northwesterly winds. A brief southeasterly shift Monday night for the northeast coast may bring showers, low clouds and low visibility. Winds for the southern coastal waters and near Cape Spencer into Cross Sound will increase with elevated seas by later Tuesday or Wednesday.

Monday
Variable winds 5 kt or less. Sunny. Seas 1 ft or less.
Monday Night
Variable winds 5 kt or less. Mostly clear. Seas 1 ft or less.
Tuesday
Variable winds 5 kt or less. Mostly sunny. Seas 1 ft or less.
Tuesday Night
NW wind 5 to 10 kt. Partly cloudy. Seas 1 to 2 ft.
Wednesday
NW wind 5 to 10 kt. Mostly sunny. Seas around 2 ft.
Wednesday Night
NW wind 5 to 10 kt. Mostly cloudy. Seas 1 to 2 ft.
Thursday
Variable winds 5 kt or less. Mostly cloudy. Seas around 1 ft.
Thursday Night
Variable winds 5 kt or less. A chance of showers. Seas 1 ft or less.
Friday
Variable winds 5 kt or less. Showers likely. 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: 3:58 am AKDT Jul 20, 2026
Forecast Valid: 4am AKDT Jul 20, 2026-6pm AKDT Jul 26, 2026
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