NWS Forecast for Petersburg AK

National Weather Service Forecast for: Petersburg AK
Issued by: National Weather Service Juneau, AK

Updated: 3:24 pm AKST Dec 17, 2025

Tonight Chance Snow Showers	Thursday Partly Sunny	Thursday Night Mostly Cloudy	Friday Mostly Cloudy	Friday Night Mostly Cloudy	Saturday Partly Sunny	Saturday Night Mostly Cloudy	Sunday Mostly Sunny	Sunday Night Mostly Cloudy
Lo 20 °F	Hi 25 °F	Lo 11 °F	Hi 17 °F	Lo 10 °F	Hi 17 °F	Lo 8 °F	Hi 13 °F	Lo 4 °F

Special Weather Statement

Tonight	A 50 percent chance of snow showers, mainly between 9pm and 3am. Cloudy, with a low around 20. Northeast wind around 5 mph.
Thursday	Partly sunny, with a high near 25. Northeast wind around 5 mph.
Thursday Night	Mostly cloudy, with a low around 11. North wind around 5 mph becoming calm in the evening.
Friday	Mostly cloudy, with a high near 17. Calm wind.
Friday Night	Mostly cloudy, with a low around 10. Calm wind.
Saturday	Partly sunny, with a high near 17.
Saturday Night	Mostly cloudy, with a low around 8.
Sunday	Mostly sunny, with a high near 13.
Sunday Night	Mostly cloudy, with a low around 4.
Monday	Partly sunny, with a high near 11.
Monday Night	Mostly cloudy, with a low around 6.
Tuesday	Mostly cloudy, with a high near 19.
Tuesday Night	A chance of snow. Mostly cloudy, with a low around 11.
Wednesday	A chance of snow. Cloudy, with a high near 26.

Forecast from NOAA-NWS for Petersburg AK.