National Weather Service Forecast for: Petersburg AK
Issued by: National Weather Service Juneau, AK
Updated: 8:24 am AKDT May 26, 2026
 
This
Afternoon
This Afternoon: Mostly cloudy, with a high near 57. South wind around 5 mph.
Mostly Cloudy
 Tonight

Tonight: Rain likely, mainly between 7pm and 1am. Cloudy, with a low around 44. South wind around 5 mph. Chance of precipitation is 70%.
Rain Likely
 Wednesday

Wednesday: A 50 percent chance of rain, mainly between 7am and 4pm. Mostly cloudy, with a high near 52. Southeast wind around 5 mph.
Chance Rain
 Wednesday
Night
Wednesday Night: Rain, mainly after 10pm. Patchy fog after 1am. Low around 42. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 90%.
Rain and
Patchy Fog
 Thursday

Thursday: Rain. Patchy fog before 7am. High near 51. Calm wind. Chance of precipitation is 100%.
Rain and
Patchy Fog
 Thursday
Night
Thursday Night: Rain likely, mainly after 4am. Mostly cloudy, with a low around 40. Chance of precipitation is 60%.
Rain Likely
 Friday

Friday: Rain. High near 52. Chance of precipitation is 80%.
Rain
 Friday
Night
Friday Night: Showers, mainly before 10pm. Mostly cloudy, with a low around 40.
Showers
 Saturday

Saturday: Showers, mainly after 10am. Partly sunny, with a high near 54.
Showers
Hi 57 °F Lo 44 °F Hi 52 °F Lo 42 °F Hi 51 °F Lo 40 °F Hi 52 °F Lo 40 °F Hi 54 °F

 

This Afternoon
 
 Mostly cloudy, with a high near 57. South wind around 5 mph.
Tonight
 
 Rain likely, mainly between 7pm and 1am. Cloudy, with a low around 44. South wind around 5 mph. Chance of precipitation is 70%.
Wednesday
 
 A 50 percent chance of rain, mainly between 7am and 4pm. Mostly cloudy, with a high near 52. Southeast wind around 5 mph.
Wednesday Night
 
 Rain, mainly after 10pm. Patchy fog after 1am. Low around 42. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 90%.
Thursday
 
 Rain. Patchy fog before 7am. High near 51. Calm wind. Chance of precipitation is 100%.
Thursday Night
 
 Rain likely, mainly after 4am. Mostly cloudy, with a low around 40. Chance of precipitation is 60%.
Friday
 
 Rain. High near 52. Chance of precipitation is 80%.
Friday Night
 
 Showers, mainly before 10pm. Mostly cloudy, with a low around 40.
Saturday
 
 Showers, mainly after 10am. Partly sunny, with a high near 54.
Saturday Night
 
 Showers before 10pm. Mostly cloudy, with a low around 41.
Sunday
 
 A chance of showers. Mostly cloudy, with a high near 56.
Sunday Night
 
 A chance of showers. Mostly cloudy, with a low around 43.
Monday
 
 Partly sunny, with a high near 60.

 

Forecast from NOAA-NWS for Petersburg AK.