Zip 99116 (Coulee Dam, WA) Climate

99116 Coulee Dam, WA enjoys a semi-arid climate with mild winters and warm summers. The average annual temperature is around 48°F (9°C), although temperatures can range from 32°F (0°C) in winter to 93°F (34°C) in summer. Rainfall is minimal, usually around 12 inches or 305 mm per year. The area also receives plenty of sunshine and enjoys about 300 days of clear skies each year allowing for plenty of outdoor activities throughout the year.

Coulee Dam (zip 99116), Washington gets 12 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Coulee Dam (zip 99116) averages 32 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 176 sunny days per year in Coulee Dam (zip 99116). The US average is 205 sunny days.

Coulee Dam (zip 99116) gets some kind of precipitation, on average, 87 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 88 degrees
Winter Low: the January low is 22
Rain: averages 12 inches of rain a year
Snow: averages 32 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for the 99116 zip code is 7.1 (10=best), which means it is about average compared to other places in Washington.

8.9 Summer - 4.4 Winter

September, June and August are the most pleasant months in the 99116 zip code, while December and January are the least comfortable months.

Climate	Coulee Dam, Washington	United States
	11.7 in.	38.1 in.
	31.6 in.	27.8 in.
	86.8 days	106.2 days
	176 days	205 days
	88.2°	85.8°
	22.4°	21.7°
	7.1	7
	3.1	4.3
	1193 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 the 99116 zip code with an average high temperature of 88.2°, which ranks it as one of the hottest places in Washington. In the 99116 zip code, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for the 99116 zip code are September, June and May.

In the 99116 zip code, there are 33.1 days annually when the high temperature is over 90°, which is one of the hottest places in Washington.

December has the coldest nighttime temperatures for the 99116 zip code with an average of 21.9°. This is colder than most places in Washington.

In the 99116 zip code, there are 125.7 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Washington.

In the 99116 zip code, there are 1.9 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Washington.

Humidity is low in the 99116 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 99116 zip code with 1.7 inches of rain, and the driest month is August with 0.3 inches. The wettest season is Spring with 35% of yearly precipitation and 18% occurs in Autumn, which is the driest season. The annual rainfall of 11.7 inches in the 99116 zip code means that it is drier than most places in Washington.

December is the rainiest month in the 99116 zip code with 11.7 days of rain, and August is the driest month with only 2.8 rainy days. There are 86.8 rainy days annually in the 99116 zip code, which is less rainy than most places in Washington. The rainiest season is Spring when it rains 34% of the time and the driest is Autumn with only a 15% chance of a rainy day.

An annual snowfall of 31.6 inches in the 99116 zip code means that it is snowier than most places in Washington. December is the snowiest month in the 99116 zip code with 13.0 inches of snow, and 5 months of the year have significant snowfall.

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