National Weather Service Forecast for: Petersburg AK
Issued by: National Weather Service Juneau, AK
Updated: 6:54 pm AKDT Apr 6, 2026
 
Tonight

Tonight: A 30 percent chance of rain, mainly before 10pm. Mostly cloudy, with a low around 34. South wind around 5 mph.
Chance Rain


 Tuesday

Tuesday: Mostly cloudy, with a high near 42. North wind around 5 mph becoming calm.
Mostly Cloudy


 Tuesday
Night
Tuesday Night: Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 31. Calm wind.
Patchy Fog


 Wednesday

Wednesday: A 30 percent chance of rain after 4pm. Patchy fog before 7am. Otherwise, mostly cloudy, with a high near 44. Calm wind.
Patchy Fog
then Chance
Rain

 Wednesday
Night
Wednesday Night: A chance of rain before 10pm, then a chance of rain after 1am. Patchy fog after 4am. Otherwise, cloudy, with a low around 35. Calm wind. Chance of precipitation is 30%.
Chance Rain
and Patchy
Fog

 Thursday

Thursday: Rain, mainly after 10am. Patchy fog before 10am. High near 43. Chance of precipitation is 80%.
Rain and
Patchy Fog

 Thursday
Night
Thursday Night: Rain. Patchy dense fog. Low around 36. Chance of precipitation is 80%.
Rain and
Patchy Dense
Fog

 Friday

Friday: A chance of rain before 4pm. Patchy fog before 10am. Otherwise, cloudy, with a high near 44.
Chance Rain
and Patchy
Fog

 Friday
Night
Friday Night: A chance of sprinkles after 10pm, mixing with flurries after 1am. Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 34.
Patchy Fog
then Chance
Sprinkles/Flurries
and Patchy
Fog
Lo 34 °F Hi 42 °F Lo 31 °F Hi 44 °F Lo 35 °F Hi 43 °F Lo 36 °F Hi 44 °F Lo 34 °F

 

Tonight
 
 A 30 percent chance of rain, mainly before 10pm. Mostly cloudy, with a low around 34. South wind around 5 mph.
Tuesday
 
 Mostly cloudy, with a high near 42. North wind around 5 mph becoming calm.
Tuesday Night
 
 Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 31. Calm wind.
Wednesday
 
 A 30 percent chance of rain after 4pm. Patchy fog before 7am. Otherwise, mostly cloudy, with a high near 44. Calm wind.
Wednesday Night
 
 A chance of rain before 10pm, then a chance of rain after 1am. Patchy fog after 4am. Otherwise, cloudy, with a low around 35. Calm wind. Chance of precipitation is 30%.
Thursday
 
 Rain, mainly after 10am. Patchy fog before 10am. High near 43. Chance of precipitation is 80%.
Thursday Night
 
 Rain. Patchy dense fog. Low around 36. Chance of precipitation is 80%.
Friday
 
 A chance of rain before 4pm. Patchy fog before 10am. Otherwise, cloudy, with a high near 44.
Friday Night
 
 A chance of sprinkles after 10pm, mixing with flurries after 1am. Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 34.
Saturday
 
 A chance of sprinkles and flurries before 7am, then a chance of sprinkles. Mostly sunny, with a high near 48.
Saturday Night
 
 A chance of sprinkles. Partly cloudy, with a low around 34.
Sunday
 
 A chance of rain or sprinkles. Mostly sunny, with a high near 48.
Sunday Night
 
 A chance of rain showers and flurries. Mostly cloudy, with a low around 34.
Monday
 
 A chance of rain. Mostly cloudy, with a high near 46.

 

Forecast from NOAA-NWS for Petersburg AK.