National Weather Service Forecast for: Petersburg AK
Issued by: National Weather Service Juneau, AK
Updated: 8:35 pm AKST Dec 4, 2025
 
Tonight

Tonight: A 20 percent chance of rain. Patchy fog. Otherwise, cloudy, with a low around 36. Calm wind.
Slight Chance
Rain and
Patchy Fog

 Friday

Friday: A 20 percent chance of rain before 9am. Areas of fog. Otherwise, partly sunny, with a high near 40. Southeast wind around 5 mph.
Slight Chance
Rain and
Areas Fog
then Areas
Fog
 Friday
Night
Friday Night: Rain, mainly after midnight. Low around 34. Southeast wind around 5 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Chance Rain
then Rain

 Saturday

Saturday: Rain. High near 41. Southeast wind 5 to 10 mph. Chance of precipitation is 100%.
Rain


 Saturday
Night
Saturday Night: Rain. Low around 36. Southeast wind 5 to 10 mph. Chance of precipitation is 100%.
Rain


 Sunday

Sunday: Rain. The rain could be heavy at times. High near 40. Chance of precipitation is 100%.
Heavy Rain


 Sunday
Night
Sunday Night: Rain. Low around 33. Chance of precipitation is 100%.
Rain


 Monday

Monday: Rain. Cloudy, with a high near 40.
Rain


 Monday
Night
Monday Night: Rain. Cloudy, with a low around 32.
Rain
Lo 36 °F Hi 40 °F Lo 34 °F Hi 41 °F Lo 36 °F Hi 40 °F Lo 33 °F Hi 40 °F Lo 32 °F

 

Tonight
 
 A 20 percent chance of rain. Patchy fog. Otherwise, cloudy, with a low around 36. Calm wind.
Friday
 
 A 20 percent chance of rain before 9am. Areas of fog. Otherwise, partly sunny, with a high near 40. Southeast wind around 5 mph.
Friday Night
 
 Rain, mainly after midnight. Low around 34. Southeast wind around 5 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Saturday
 
 Rain. High near 41. Southeast wind 5 to 10 mph. Chance of precipitation is 100%.
Saturday Night
 
 Rain. Low around 36. Southeast wind 5 to 10 mph. Chance of precipitation is 100%.
Sunday
 
 Rain. The rain could be heavy at times. High near 40. Chance of precipitation is 100%.
Sunday Night
 
 Rain. Low around 33. Chance of precipitation is 100%.
Monday
 
 Rain. Cloudy, with a high near 40.
Monday Night
 
 Rain. Cloudy, with a low around 32.
Tuesday
 
 Rain. Cloudy, with a high near 39.
Tuesday Night
 
 Rain and snow. Cloudy, with a low around 31.
Wednesday
 
 Rain and snow. Cloudy, with a high near 37.
Wednesday Night
 
 Rain and snow. Cloudy, with a low around 27.
Thursday
 
 Rain and snow likely. Cloudy, with a high near 34.

 

Forecast from NOAA-NWS for Petersburg AK.