2025 Compare Climate & Weather:
Copper Center, AK vs Petersburg, AK

Highlights

On average, there are 96 sunny days per year in Petersburg. Copper Center averages 134 sunny days per year. The US average is 205 sunny days.

Petersburg, Alaska gets 109.2 inches of rain, on average, per year. Copper Center, Alaska gets 11.5 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Petersburg averages 76.7 inches of snow per year. Copper Center averages 58.3 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Petersburg, Alaska
Summer High: the July high is around 64 degrees
Winter Low: the January low is 26
Rain: averages 109.2 inches of rain a year
Snow: averages 76.7 inches of snow a year

Copper Center, Alaska
Summer High: the July high is around 69.4 degrees
Winter Low: the January low is -10.4
Rain: averages 11.5 inches of rain a year
Snow: averages 58.3 inches of snow a year

BestPlaces Comfort Index

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

The annual BestPlaces Comfort Index for Copper Center is 5.1 (10=best), which means it is more comfortable than most places in Alaska.

Today's Weather - Copper Center, AK

40°F

Today's Weather - Petersburg, AK

42°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Copper Center / Petersburg

July is the hottest month for Copper Center with an average high temperature of 69.4°, which ranks it as warmer than most places in Alaska. In Copper Center, there are 0 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Copper Center are July, June and August.

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

January has the coldest nighttime temperatures for Copper Center with an average of -10.4°. This is colder than most places in Alaska.

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

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

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

In Copper Center, there are 245.5 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Alaska.

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

In Copper Center, there are 92.3 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Alaska.

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

July is the wettest month in Copper Center with 1.8 inches of rain, and the driest month is April with 0.2 inches. The wettest season is Autumn with 41% of yearly precipitation and 9% occurs in Summer, which is the driest season. The annual rainfall of 11.5 inches in Copper Center means that it is one of the driest places in Alaska.


October is the wettest month in Petersburg with 15.7 inches of rain, and the driest month is June with 4.9 inches. The wettest season is Winter with 38% of yearly precipitation and 16% occurs in Autumn, which is the driest season. The annual rainfall of 109.2 inches in Petersburg means that it is one of the wettest places in Alaska.

August is the rainiest month in Copper Center with 12.5 days of rain, and April is the driest month with only 2.5 rainy days. There are 94.3 rainy days annually in Copper Center, which is less rainy than most places in Alaska. The rainiest season is Autumn when it rains 36% of the time and the driest is Summer with only a 12% chance of a rainy day.

October is the rainiest month in Petersburg 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, 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 58.3 inches in Copper Center means that it is less snowy than most places in Alaska.

An annual snowfall of 76.7 inches in Petersburg means that it is snowier than most places in Alaska.

November is the snowiest month in Copper Center with 11.7 inches of snow, and 8 months of the year have significant snowfall.

January is the snowiest month in Petersburg with 21.9 inches of snow, and 7 months of the year have significant snowfall.