Petersburg Borough, AK Climate

Petersburg, AK County has a mild oceanic climate with cool summers and mild winters. The average temperature in summer is around 53°F while the winter temperatures can drop to an average low of 28°F. Rainfall averages around 65 inches per year, providing plenty of moisture for the region's lush forests and grassy meadows. Snowfall in Petersburg is comparatively light, averaging only 37 inches per year. Despite the short winters, the county experiences long days during the summer months creating perfect conditions for outdoor activities such as fishing, camping and hiking.

Petersburg Borough County, Alaska gets 121 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Petersburg Borough County averages 77 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 96 sunny days per year in Petersburg Borough County. The US average is 205 sunny days.

Petersburg Borough County gets some kind of precipitation, on average, 233 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.

Weather Highlights

Summer High: the July high is around 64 degrees
Winter Low: the January low is 26
Rain: averages 121 inches of rain a year
Snow: averages 77 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Petersburg County is 5.2 (10=best), which means it is more comfortable than most places in Alaska.

7.5 Summer - 3.2 Winter

July, August and June are the most pleasant months in Petersburg County, while January and December are the least comfortable months.

Climate	Petersburg Borough, Alaska	United States
	120.5 in.	38.1 in.
	76.7 in.	27.8 in.
	233.3 days	106.2 days
	96 days	205 days
	64.0°	85.8°
	26.0°	21.7°
	5.2	7
	1.4	4.3
	1573 ft.	2443 ft.

Climate

YOU SHOULD KNOW

Many people confuse weather and climate but they are different. Weather is the conditions of the atmosphere over a short period of time, and climate is how the atmosphere is over long periods of time.

Weather is how the atmosphere is behaving and its effects upon life and human activities. Weather can change from minute-to-minute. Most people think of weather in terms of temperature, humidity, precipitation, cloudiness, brightness, visibility, wind, and atmospheric pressure.

Climate is the description of the long-term pattern of weather in a place. Climate can mean the average weather for a particular region and time period taken over 30 years. Climate is the average of weather over time.

July is the hottest month for Petersburg County with an average high temperature of 64.0°, which ranks it as about average compared to other places in Alaska. In Petersburg County, there are 0 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Petersburg County are July, August and June.

In Petersburg County, there are 0.0 days annually when the high temperature is over 90°, which is about average compared to other places in Alaska.

January has the coldest nighttime temperatures for Petersburg County with an average of 26.0°. This is warmer than most places in Alaska.

In Petersburg County, there are 112.4 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Alaska.

In Petersburg County, there are 0.8 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Alaska.

Humidity is low in Petersburg County, and some people might find the dryness to be uncomfortable. Days with noticeable humidity are rare throughout the year. A very dry climate can lead to cracked, itchy skin and dry eyes.

October is the wettest month in Petersburg County with 17.1 inches of rain, and the driest month is June with 4.4 inches. The wettest season is Winter with 38% of yearly precipitation and 13% occurs in Autumn, which is the driest season. The annual rainfall of 120.5 inches in Petersburg County means that it is one of the wettest places in Alaska.

October is the rainiest month in Petersburg County with 24.4 days of rain, and June is the driest month with only 16.2 rainy days. There are 233.3 rainy days annually in Petersburg County, which is rainier than most places in Alaska. The rainiest season is Winter when it rains 29% of the time and the driest is Autumn with only a 21% chance of a rainy day.

An annual snowfall of 76.7 inches in Petersburg County means that it is snowier than most places in Alaska. January is the snowiest month in Petersburg County with 21.9 inches of snow, and 7 months of the year have significant snowfall.

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