Zip 99754 (Koyukuk, AK) Climate

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99754 Koyukuk, AK has an arctic climate, with very cold winters and short, cool summers. Average temperatures range from -20°F in winter to 60°F in summer. The area receives an average of 10 to 15 inches of precipitation annually, with most of it falling as snow between October and April. The area experiences an average of 170 days with temperatures below freezing each year.

Koyukuk (zip 99754), Alaska gets 15 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Koyukuk (zip 99754) averages 78 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 150 sunny days per year in Koyukuk (zip 99754). The US average is 205 sunny days.

Koyukuk (zip 99754) gets some kind of precipitation, on average, 113 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 70 degrees
Winter Low: the January low is -17
Rain: averages 15 inches of rain a year
Snow: averages 78 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for the 99754 zip code is 4.7 (10=best), which means it is less comfortable than most places in Alaska.

8.4 Summer - 1.6 Winter

July, June and August are the most pleasant months in the 99754 zip code, while December and January are the least comfortable months.

Climate	Koyukuk, Alaska	United States
	Unlock	38.1 in.
	77.9 in.	Unlock
	Unlock	106.2 days
	150 days	Unlock
	70.1°	85.8°
	Unlock	21.7°
	4.7	Unlock
	Unlock	4.3
	98 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.

July is the hottest month for the 99754 zip code with an average high temperature of 70.1°, which ranks it as warmer than most places in Alaska. In the 99754 zip code, there are 1 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for the 99754 zip code are July, June and August.

In the 99754 zip code, there are 0.1 days annually when the high temperature is over 90°, which is hotter than most places in Alaska.

January has the coldest nighttime temperatures for the 99754 zip code with an average of -17.0°. This is colder than most places in Alaska.

In the 99754 zip code, there are 233.8 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Alaska.

In the 99754 zip code, there are 107.7 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Alaska.

Humidity in the 99754 zip code is generally quite low and comfortable. There are few days during the summer when the humidity becomes unpleasant. The most humid months (but still comfortable) are July, August and June.

August is the wettest month in the 99754 zip code with 2.5 inches of rain, and the driest month is April with 0.5 inches. The wettest season is Autumn with 40% of yearly precipitation and 12% occurs in Summer, which is the driest season. The annual rainfall of 14.7 inches in the 99754 zip code means that it is drier than most places in Alaska.

August is the rainiest month in the 99754 zip code with 13.8 days of rain, and May is the driest month with only 5.0 rainy days. There are 113.2 rainy days annually in the 99754 zip code, which is less rainy than most places in Alaska. The rainiest season is Winter when it rains 30% of the time and the driest is Summer with only a 16% chance of a rainy day.

An annual snowfall of 77.9 inches in the 99754 zip code means that it is snowier than most places in Alaska. February is the snowiest month in the 99754 zip code with 14.7 inches of snow, and 7 months of the year have significant snowfall.

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