Zip 99353 (West Richland, WA) Climate

99353 West Richland, WA has a warm and dry climate that is typical of much of the Pacific Northwest. Summers are usually hot and dry with temperatures reaching into the 90s during the day, while nights remain mild. Winters are generally cold and wet with temperatures usually falling below freezing at night. Rainfall is relatively low year-round, but when it does rain it can be quite intense. Snowfall is also rare in this part of Washington, with most of it occurring during the higher elevations in the nearby Cascade Mountains.

West Richland (zip 99353), Washington gets 9 inches of rain, on average, per year. The US average is 38 inches of rain per year.

West Richland (zip 99353) averages 4 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 192 sunny days per year in West Richland (zip 99353). The US average is 205 sunny days.

West Richland (zip 99353) gets some kind of precipitation, on average, 80 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 28
Rain: averages 9 inches of rain a year
Snow: averages 4 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for the 99353 zip code is 7.5 (10=best), which means it is one of the most pleasant places in Washington.

9 Summer - 5.4 Winter

June, September and August are the most pleasant months in the 99353 zip code, while December and January are the least comfortable months.

Climate	West Richland, Washington	United States
	Unlock	38.1 in.
	3.7 in.	Unlock
	Unlock	106.2 days
	192 days	Unlock
	88.4°	85.8°
	Unlock	21.7°
	7.5	Unlock
	Unlock	4.3
	600 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 99353 zip code with an average high temperature of 88.4°, which ranks it as one of the hottest places in Washington. In the 99353 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 99353 zip code are September, June and May.

In the 99353 zip code, there are 32.5 days annually when the high temperature is over 90°, which is hotter than most places in Washington.

December has the coldest nighttime temperatures for the 99353 zip code with an average of 26.5°. This is colder than most places in Washington.

In the 99353 zip code, there are 96.9 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Washington.

In the 99353 zip code, there are 0.8 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Washington.

Humidity is low in the 99353 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 99353 zip code with 1.2 inches of rain, and the driest month is August with 0.2 inches. The wettest season is Spring with 36% of yearly precipitation and 13% occurs in Autumn, which is the driest season. The annual rainfall of 8.6 inches in the 99353 zip code means that it is one of the driest places in Washington.

December is the rainiest month in the 99353 zip code with 11.3 days of rain, and August is the driest month with only 2.2 rainy days. There are 80.3 rainy days annually in the 99353 zip code, which is less rainy than most places in Washington. The rainiest season is Spring when it rains 38% of the time and the driest is Autumn with only a 11% chance of a rainy day.

An annual snowfall of 3.7 inches in the 99353 zip code means that it is less snowy than most places in Washington. December is the snowiest month in the 99353 zip code with 1.7 inches of snow, and 3 months of the year have significant snowfall.

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