Zip 98438 (McChord AFB, WA) Climate

McChord AFB, WA has a temperate climate with mild winters and warm summers. Average temperatures range from the mid-20s in the winter, to the mid-70s in the summer. The area receives an average of 38 inches of rain per year with little snowfall and plenty of sunshine throughout the year. With its close proximity to Puget Sound and other bodies of water, it’s common for comfortable sea breezes to drift through McChord AFB on warm days. Humidity levels are also relatively low, making for generally pleasant weather all year round.

McChord AFB (zip 98438), Washington gets 41 inches of rain, on average, per year. The US average is 38 inches of rain per year.

McChord AFB (zip 98438) averages 5 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 137 sunny days per year in McChord AFB (zip 98438). The US average is 205 sunny days.

McChord AFB (zip 98438) gets some kind of precipitation, on average, 156 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 77 degrees
Winter Low: the January low is 36
Rain: averages 41 inches of rain a year
Snow: averages 5 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for the 98438 zip code is 7.4 (10=best), which means it is one of the most pleasant places in Washington.

9.3 Summer - 5.5 Winter

August, July and September are the most pleasant months in the 98438 zip code, while December and January are the least comfortable months.

Climate	McChord AFB, Washington	United States
	Unlock	38.1 in.
	4.7 in.	Unlock
	Unlock	106.2 days
	137 days	Unlock
	77.1°	85.8°
	Unlock	21.7°
	7.4	Unlock
	Unlock	4.3
	309 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 98438 zip code with an average high temperature of 77.2°, which ranks it as about average compared to other places in Washington. In the 98438 zip code, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for the 98438 zip code are August, July and September.

In the 98438 zip code, there are 2.5 days annually when the high temperature is over 90°, which is cooler than most places in Washington.

December has the coldest nighttime temperatures for the 98438 zip code with an average of 35.1°. This is warmer than most places in Washington.

In the 98438 zip code, there are 32.2 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Washington.

In the 98438 zip code, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Washington.

Humidity in the 98438 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 August, July and September.

November is the wettest month in the 98438 zip code with 6.7 inches of rain, and the driest month is July with 0.7 inches. The wettest season is Spring with 40% of yearly precipitation and 8% occurs in Autumn, which is the driest season. The annual rainfall of 41.0 inches in the 98438 zip code means that it is about average compared to other places in Washington.

November is the rainiest month in the 98438 zip code with 19.6 days of rain, and August is the driest month with only 4.5 rainy days. There are 156.1 rainy days annually in the 98438 zip code, which is about average compared to other places in Washington. The rainiest season is Spring when it rains 33% of the time and the driest is Autumn with only a 12% chance of a rainy day.

An annual snowfall of 4.7 inches in the 98438 zip code means that it is about average compared to other places in Washington. December is the snowiest month in the 98438 zip code with 1.2 inches of snow, and 5 months of the year have significant snowfall.

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