Arlington County, VA Climate

The climate in Arlington, VA County is generally mild with warm summers and cold winters. Average temperatures range from highs of around 80 degrees Fahrenheit in the summer to lows of around 20 degrees Fahrenheit in the winter. The county typically receives an average of 40 inches of precipitation each year, with most coming during the months of June through September. Snowfall totals for any given winter tend to range from 8-12 inches per season. Humidity levels are usually moderate throughout the year, especially during the summer months when humidity levels can be higher than usual.

Arlington County, Virginia gets 43 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Arlington County averages 15 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 202 sunny days per year in Arlington County. The US average is 205 sunny days.

Arlington County gets some kind of precipitation, on average, 117 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 27
Rain: averages 43 inches of rain a year
Snow: averages 15 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Arlington County is 7.3 (10=best), which means it is about average compared to other places in Virginia.

7.7 Summer - 5.9 Winter

September, May and June are the most pleasant months in Arlington County, while January and February are the least comfortable months.

Climate	Arlington, Virginia	United States
	43.4 in.	38.1 in.
	15.1 in.	27.8 in.
	117.1 days	106.2 days
	202 days	205 days
	87.8°	85.8°
	26.5°	21.7°
	7.3	7
	4	4.3
	200 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 Arlington County with an average high temperature of 87.8°, which ranks it as warmer than most places in Virginia. In Arlington County, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Arlington County are September, May and June.

In Arlington County, there are 29.1 days annually when the high temperature is over 90°, which is hotter than most places in Virginia.

January has the coldest nighttime temperatures for Arlington County with an average of 26.5°. This is warmer than most places in Virginia.

In Arlington County, there are 78.6 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Virginia.

In Arlington County, there are 0.1 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Virginia.

The humidity can be uncomfortably heavy or close in Arlington County during the summer months. July is the most humid month, though humidity is low for most of the year. July, August and June are the three most humid months in Arlington County.

May is the wettest month in Arlington County with 4.3 inches of rain, and the driest month is February with 2.9 inches. The wettest season is Autumn with 27% of yearly precipitation and 21% occurs in Spring, which is the driest season. The annual rainfall of 43.4 inches in Arlington County means that it is about average compared to other places in Virginia.

May is the rainiest month in Arlington County with 11.8 days of rain, and October is the driest month with only 8.3 rainy days. There are 117.1 rainy days annually in Arlington County, which is rainier than most places in Virginia. The rainiest season is Summer when it rains 28% of the time and the driest is Winter with only a 22% chance of a rainy day.

An annual snowfall of 15.1 inches in Arlington County means that it is about average compared to other places in Virginia. January is the snowiest month in Arlington County with 5.8 inches of snow, and 5 months of the year have significant snowfall.

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