2025 Compare Climate & Weather:
Sitka, AK vs Boise City, ID

Highlights

On average, there are 206 sunny days per year in Boise City. Sitka averages 84 sunny days per year. The US average is 205 sunny days.

Boise City, Idaho gets 13 inches of rain, on average, per year. Sitka, Alaska gets 119.8 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Boise City averages 17.5 inches of snow per year. Sitka averages 44.2 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Boise City, Idaho
Summer High: the July high is around 91.6 degrees
Winter Low: the January low is 23.7
Rain: averages 13 inches of rain a year
Snow: averages 17.5 inches of snow a year

Sitka, Alaska
Summer High: the July high is around 61 degrees
Winter Low: the January low is 31.9
Rain: averages 119.8 inches of rain a year
Snow: averages 44.2 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Boise is 7.3 (10=best), which means it is one of the most pleasant places in Idaho.

The annual BestPlaces Comfort Index for Sitka is 5.4 (10=best), which means it is more comfortable than most places in Alaska.

Today's Weather - Sitka, AK

44°F

Today's Weather - Boise City, ID

57°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Sitka / Boise City

August is the hottest month for Sitka with an average high temperature of 62.1°, which ranks it as cooler than most places in Alaska. In Sitka, there are 0 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Sitka are August, July and June.

July is the hottest month for Boise with an average high temperature of 91.6°, which ranks it as one of the hottest places in Idaho. In Boise, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Boise are September, June and May.

February has the coldest nighttime temperatures for Sitka with an average of 31.7°. This is one of the warmest places in Alaska.

December has the coldest nighttime temperatures for Boise with an average of 22.7°. This is warmer than most places in Idaho.

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

In Boise, there are 51.0 days annually when the high temperature is over 90°, which is one of the hottest places in Idaho.

In Sitka, there are 68.5 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Alaska.

In Boise, there are 114.9 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Idaho.

In Sitka, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is one of the warmest places in Alaska.

In Boise, there are 2.8 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Idaho.

October is the wettest month in Sitka with 17.2 inches of rain, and the driest month is June with 3.8 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 119.8 inches in Sitka means that it is one of the wettest places in Alaska.


December is the wettest month in Boise with 1.9 inches of rain, and the driest month is July with 0.3 inches. The wettest season is Spring with 35% of yearly precipitation and 10% occurs in Autumn, which is the driest season. The annual rainfall of 13.0 inches in Boise means that it is about average compared to other places in Idaho.

October is the rainiest month in Sitka with 24.6 days of rain, and June is the driest month with only 15.2 rainy days. There are 235.8 rainy days annually in Sitka, which is one of the rainiest places in Alaska. The rainiest season is Winter when it rains 29% of the time and the driest is Autumn with only a 22% chance of a rainy day.

December is the rainiest month in Boise with 11.3 days of rain, and August is the driest month with only 2.3 rainy days. There are 87.0 rainy days annually in Boise, which is less rainy than most places in Idaho. The rainiest season is Spring when it rains 35% of the time and the driest is Autumn with only a 12% chance of a rainy day.

An annual snowfall of 44.2 inches in Sitka means that it is one of the least snowy places in Alaska.

An annual snowfall of 17.5 inches in Boise means that it is less snowy than most places in Idaho.

January is the snowiest month in Sitka with 12.5 inches of snow, and 6 months of the year have significant snowfall.

December is the snowiest month in Boise with 6.4 inches of snow, and 5 months of the year have significant snowfall.