What is today's weather forecast for Petersburg, AK?

Today's forecast for Petersburg shows a low of 20 degrees Fahrenheit. A 50 percent chance of snow showers, mainly between 9pm and 3am.

What is the 7-day weather forecast for Petersburg, AK?

The 7-day forecast for Petersburg shows highs from 11 to 26 degrees and lows from 4 to 20 degrees Fahrenheit. Expect precipitation on 3 days with chances of 20% or higher.

Will it rain in Petersburg, AK this week?

Yes, rain is possible in Petersburg this week. Precipitation chances: Wednesday (50% chance), Tuesday (50% chance), Wednesday (50% chance).

How accurate is the Petersburg weather forecast?

WeatherForYou provides highly accurate Petersburg forecasts using National Weather Service data and current conditions from the nearest available weather stations, often miles closer than regional airports, for the most precise local forecasts.

Petersburg, AK Weather Forecast and Current Conditions

WEATHER ALERTS - Special Weather Statement

Current Conditions From Nearby Local Station

Switch to Metric Units

24°F
Feels Like 20°F

Humidity 96% Dew Point 23°F Wind WSW 3 MPH Barometer 29.47 in.

Visibility 10 mi.

Report from a NOAA weather station 0.5 mi. NW of central Petersburg
at 5:56 PM Wed, Dec 17, 2025

Point Forecast at a Glance

WedDec 17

50%

ThuDec 18

FriDec 19

SatDec 20

SunDec 21

MonDec 22

TueDec 23

Jump to detailed forecast ↓

7-Day Temperature Trend

Week Ahead Summary

Variable high temperatures through the week, ranging from 11°F to 25°F. Some snow possible with at least 2 days showing precipitation chances of 20% or higher.

Climate Context

This week's forecast shows temperatures running 17°F below the historical average for December. Normal highs for this period are around 35°F with lows around 28°F.

This Date in Weather History

1987 - A storm in the southwestern U.S. brought heavy rain and heavy snow to parts of California, Nevada, Arizona, Utah and New Mexico. Charleston NV was blanketed with 12 inches of snow. Lake Havasu City AZ was drenched with 2.26 inches of rain.

Petersburg, AK 7 Day Weather Forecast Details

Wednesday Dec 17

Night: A 50 percent chance of snow showers, mainly between 9pm and 3am. Cloudy, with a low around 20. Northeast wind around 5 mph.

Thursday Dec 18

Day: Partly sunny, with a high near 25. Northeast wind around 5 mph.

Night: Mostly cloudy, with a low around 11. North wind around 5 mph becoming calm in the evening.

Friday Dec 19

Day: Mostly cloudy, with a high near 17. Calm wind.

Night: Mostly cloudy, with a low around 10. Calm wind.

Saturday Dec 20

Day: Partly sunny, with a high near 17.

Night: Mostly cloudy, with a low around 8.

Sunday Dec 21

Day: Mostly sunny, with a high near 13.

Night: Mostly cloudy, with a low around 4.

Monday Dec 22

Day: Partly sunny, with a high near 11.

Night: Mostly cloudy, with a low around 6.

Tuesday Dec 23

Day: Mostly cloudy, with a high near 19.

Night: A chance of snow. Mostly cloudy, with a low around 11.

Wednesday Dec 24

Day: A chance of snow. Cloudy, with a high near 26.

About Petersburg, AK

Petersburg is a census-designated place (CDP) in and essentially the borough seat of Petersburg Borough, Alaska, United States. The population was 3,043 at the 2020 census, up from 2,948 in 2010. The borough encompasses Petersburg and Kupreanof, plus mostly uninhabited areas stretching to the Canadian–American border and the southern boundary of the City and Borough of Juneau. While the city of Petersburg ceased to exist as a separate administrative entity (the borough assembly created a service area to assume operation of the former city's services), the tiny city of Kupreanof remains separate within the borough.

Content from Wikipedia, licensed under CC BY-SA 3.0.

How We Provide Better Local Weather

Current conditions: We use the nearest available station to your location - including professional MESONET/MADIS and local weather stations - often miles closer than regional airports.

Forecasts: National Weather Service point forecasts predict for your specific area, not broad regional zones, making them far more relevant to your location.

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