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National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
7-Day Forecast 56.81°N 132.95°W (Text-Only)
NWS Forecast for: Petersburg AK
Issued by: National Weather Service Juneau, AK
Last Update: 8:01 pm AKDT Jun 29, 2026		Print

  • Tonight

    Tonight: Partly cloudy, with a low around 48. West wind around 5 mph.

    Low: 48 °F

    Partly Cloudy



  • Tuesday

    Tuesday: Mostly cloudy, with a high near 60. Northwest wind around 5 mph.

    High: 60 °F

    Mostly Cloudy



  • Tuesday
    Night

    Tuesday Night: A 40 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 48. Calm wind.

    Low: 48 °F

    Chance
    Showers


  • Wednesday

    Wednesday: Showers, mainly after 10am. High near 56. Calm wind. Chance of precipitation is 80%.

    High: 56 °F

    Showers



  • Wednesday
    Night

    Wednesday Night: Showers likely, mainly before 10pm. Mostly cloudy, with a low around 46. Calm wind. Chance of precipitation is 70%.

    Low: 46 °F

    Showers
    Likely then
    Chance
    Showers

  • Thursday

    Thursday: A 40 percent chance of showers. Mostly cloudy, with a high near 59.

    High: 59 °F

    Chance
    Showers


  • Thursday
    Night

    Thursday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 47.

    Low: 47 °F

    Chance
    Showers


  • Friday

    Friday: A chance of showers. Cloudy, with a high near 59.

    High: 59 °F

    Chance
    Showers


  • Friday
    Night

    Friday Night: Showers likely. Cloudy, with a low around 48.

    Low: 48 °F

    Showers
    Likely


    • Tonight: Partly cloudy, with a low around 48. West wind around 5 mph.

    Tuesday: Mostly cloudy, with a high near 60. Northwest wind around 5 mph.

    Tuesday Night: A 40 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 48. Calm wind.

    Wednesday: Showers, mainly after 10am. High near 56. Calm wind. Chance of precipitation is 80%.

    Wednesday Night: Showers likely, mainly before 10pm. Mostly cloudy, with a low around 46. Calm wind. Chance of precipitation is 70%.

    Thursday: A 40 percent chance of showers. Mostly cloudy, with a high near 59.

    Thursday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 47.

    Friday: A chance of showers. Cloudy, with a high near 59.

    Friday Night: Showers likely. Cloudy, with a low around 48.

    Independence Day: Showers likely. Cloudy, with a high near 59.

    Saturday Night: Showers likely. Mostly cloudy, with a low around 48.

    Sunday: A chance of showers. Mostly cloudy, with a high near 60.

    Sunday Night: A chance of showers. Mostly cloudy, with a low around 48.

    Monday: A chance of showers. Mostly cloudy, with a high near 61.


    Petersburg AK
     56.81°N 132.95°W (Elev. 121 ft)

    Visit your local NWS office at: https://www.weather.gov/Juneau