National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Wednesday 1:00 AM: Mendenhall Basin Releasing

After coordinating with science partners, it has been determined that the Basin is releasing. A Flood Warning was issued in response to a forecasted crest above 16 feet. As of 1:00 AM Wednesday, the Mendenhall Lake gauge has crossed over into Major Flood Stage. Read More >

Hazardous Weather Conditions

Current conditions at

Petersburg (PAPG)

Lat: 56.8°NLon: 132.95°WElev: 71ft.

Fog

49°F

9°C

Humidity 100%
Wind Speed Calm
Barometer 30.03 in (1017.2 mb)
Dewpoint 49°F (9°C)
Visibility 0.50 mi
Last update 13 Aug 2:56 am AKDT
Extended Forecast for

Petersburg AK

Dense Fog Advisory until August 13, 10:00am
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory until August 13, 10:00am

    NOW until 10:00am Wed

    Dense Fog Advisory

  • Overnight

    Low: 51 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 73. Calm wind.

    High: 73 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 54. Calm wind.

    Low: 54 °F

    Mostly Cloudy

  • Thursday

    Thursday: Cloudy, with a high near 71. Calm wind becoming southeast around 5 mph.

    High: 71 °F

    Cloudy

  • Thursday Night

    Thursday Night: Cloudy, with a low around 54. Southeast wind around 5 mph becoming calm.

    Low: 54 °F

    Cloudy

  • Friday

    Friday: A 30 percent chance of rain after 1pm. Cloudy, with a high near 70.

    High: 70 °F

    Cloudy then
    Chance Rain

  • Friday Night

    Friday Night: Rain likely. Cloudy, with a low around 55. Chance of precipitation is 70%.

    Low: 55 °F

    Rain Likely

  • Saturday

    Saturday: Rain. Cloudy, with a high near 67.

    High: 67 °F

    Rain

Detailed Forecast

Overnight
Mostly clear, with a low around 51. Calm wind.
Wednesday
Mostly sunny, with a high near 73. Calm wind.
Wednesday Night
Mostly cloudy, with a low around 54. Calm wind.
Thursday
Cloudy, with a high near 71. Calm wind becoming southeast around 5 mph.
Thursday Night
Cloudy, with a low around 54. Southeast wind around 5 mph becoming calm.
Friday
A 30 percent chance of rain after 1pm. Cloudy, with a high near 70.
Friday Night
Rain likely. Cloudy, with a low around 55. Chance of precipitation is 70%.
Saturday
Rain. Cloudy, with a high near 67.
Saturday Night
Rain, mainly before 10pm. Cloudy, with a low around 52.
Sunday
Rain likely, mainly after 10am. Mostly cloudy, with a high near 69.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 50.
Monday
A chance of rain. Partly sunny, with a high near 69.
Monday Night
A chance of rain. Mostly cloudy, with a low around 50.
Tuesday
A chance of rain. Mostly cloudy, with a high near 70.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Petersburg AK
 56.79°N 132.96°W (Elev. 302 ft)
Last Update:
3:18 am AKDT Aug 13, 2025
Forecast Valid:
3am AKDT Aug 13, 2025-6pm AKDT Aug 19, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation