Zip 99685 (Unalaska, AK) Climate

Unalaska, AK (99685) experiences a cool-summer subarctic climate. It has warm summers and cold winters, with mild temperatures throughout the year. The average summer temperature in Unalaska is around 48°F and the average winter temperature is 21°F. During the summer months, there are 12 hours of daylight each day. Precipitation is fairly evenly distributed throughout the year, usually between 16-20 inches per year. Snowfall can occur throughout the winter months and luckily this coastal city rarely experiences extreme weather conditions.

Unalaska (zip 99685), Alaska gets 62 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Unalaska (zip 99685) averages 95 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 65 sunny days per year in Unalaska (zip 99685). The US average is 205 sunny days.

Unalaska (zip 99685) gets some kind of precipitation, on average, 225 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 57 degrees
Winter Low: the January low is 28
Rain: averages 62 inches of rain a year
Snow: averages 95 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for the 99685 zip code is 4.9 (10=best), which means it is about average compared to other places in Alaska.

7 Summer - 3.2 Winter

August, July and June are the most pleasant months in the 99685 zip code, while January and February are the least comfortable months.

Climate	Unalaska, Alaska	United States
	Unlock	38.1 in.
	94.9 in.	Unlock
	Unlock	106.2 days
	65 days	Unlock
	57.0°	85.8°
	Unlock	21.7°
	4.9	Unlock
	Unlock	4.3
	641 ft.	Unlock

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.

August is the hottest month for the 99685 zip code with an average high temperature of 58.7°, which ranks it as cooler than most places in Alaska. In the 99685 zip code, there are 0 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for the 99685 zip code are August, July and September.

In the 99685 zip code, 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 the 99685 zip code with an average of 27.7°. This is one of the warmest places in Alaska.

In the 99685 zip code, there are 120.9 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Alaska.

In the 99685 zip code, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is one of the warmest places in Alaska.

Humidity is low in the 99685 zip code, 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.

December is the wettest month in the 99685 zip code with 7.9 inches of rain, and the driest month is July with 2.2 inches. The wettest season is Spring with 35% of yearly precipitation and 12% occurs in Autumn, which is the driest season. The annual rainfall of 61.6 inches in the 99685 zip code means that it is wetter than most places in Alaska.

October is the rainiest month in the 99685 zip code with 23.4 days of rain, and July is the driest month with only 12.9 rainy days. There are 225.4 rainy days annually in the 99685 zip code, 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 19% chance of a rainy day.

An annual snowfall of 94.9 inches in the 99685 zip code means that it is snowier than most places in Alaska. January is the snowiest month in the 99685 zip code with 26.0 inches of snow, and 7 months of the year have significant snowfall.

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