Zip 20191 (Reston, VA) Climate

Reston, VA enjoys a mild climate with warm summers and cold winters. The area typically experiences moderate temperatures year-round, with an average high of 81°F in the summer months and an average low of 28°F in winter. Rainfall is spread throughout the year, with the most precipitation falling from April through October. Snowfall is generally light and mostly confined to the colder winter months.

Reston (zip 20191), Virginia gets 43 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Reston (zip 20191) averages 22 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 197 sunny days per year in Reston (zip 20191). The US average is 205 sunny days.

Reston (zip 20191) gets some kind of precipitation, on average, 120 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 86 degrees
Winter Low: the January low is 24
Rain: averages 43 inches of rain a year
Snow: averages 22 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for the 20191 zip code is 7.3 (10=best), which means it is about average compared to other places in Virginia.

8.3 Summer - 5.6 Winter

September, June and May are the most pleasant months in the 20191 zip code, while January and February are the least comfortable months.

Climate	Reston, Virginia	United States
	Unlock	38.1 in.
	21.5 in.	Unlock
	Unlock	106.2 days
	197 days	Unlock
	85.6°	85.8°
	Unlock	21.7°
	7.3	Unlock
	Unlock	4.3
	390 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 20191 zip code with an average high temperature of 85.6°, which ranks it as cooler than most places in Virginia. In the 20191 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 20191 zip code are September, June and May.

In the 20191 zip code, there are 18.3 days annually when the high temperature is over 90°, which is cooler than most places in Virginia.

January has the coldest nighttime temperatures for the 20191 zip code with an average of 23.5°. This is colder than most places in Virginia.

In the 20191 zip code, there are 103.8 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Virginia.

In the 20191 zip code, there are 0.6 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Virginia.

The humidity is usually acceptable in the 20191 zip code but some summer months can be sticky or muggy. July is the most humid month, though humidity is low for most of the year. July, August and June are the three most uncomfortably humid months in the 20191 zip code.

May is the wettest month in the 20191 zip code with 4.6 inches of rain, and the driest month is February with 2.8 inches. The wettest season is Summer with 27% of yearly precipitation and 20% occurs in Spring, which is the driest season. The annual rainfall of 43.0 inches in the 20191 zip code means that it is drier than most places in Virginia.

May is the rainiest month in the 20191 zip code with 12.2 days of rain, and October is the driest month with only 8.1 rainy days. There are 119.6 rainy days annually in the 20191 zip code, 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 21.5 inches in the 20191 zip code means that it is one of the snowiest places in Virginia. February is the snowiest month in the 20191 zip code with 7.8 inches of snow, and 5 months of the year have significant snowfall.

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