Great Falls, VA Climate


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United States / Virginia / Washington-Arlington-Alexandria Metro Area / Fairfax County / Great Falls / Zip Codes
Great Falls, VA has a humid subtropical climate, with warm and humid summers and cool winters. The average summer temperature is around 81°F and the average winter temperature is around 37°F. Precipitation levels are generally higher in the summer months, with an average of 3 inches each month throughout the year. The area enjoys four distinct seasons, making it a great destination to enjoy all that nature has to offer.

Great Falls, Virginia gets 42 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Great Falls averages 22 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 196 sunny days per year in Great Falls. The US average is 205 sunny days.

Great Falls gets some kind of precipitation, on average, 116 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 42 inches of rain a year
Snow: averages 22 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Great Falls 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 Great Falls, while January and February are the least comfortable months.

  ClimateGreat Falls, VirginiaUnited States
  42.4 in.38.1 in.
  21.5 in.27.8 in.
  116.3 days106.2 days
  196 days205 days
  85.8°85.8°
  23.5°21.7°
  7.37
  44.3
  344 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 Great Falls with an average high temperature of 85.8°, which ranks it as cooler than most places in Virginia. In Great Falls, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Great Falls are September, June and May.
In Great Falls, there are 18.4 days annually when the high temperature is over 90°, which is cooler than most places in Virginia.
January has the coldest nighttime temperatures for Great Falls with an average of 23.5°. This is colder than most places in Virginia.
In Great Falls, 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 Great Falls, there are 0.6 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Virginia.
The humidity can be uncomfortably heavy or close in Great Falls 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 Great Falls.
May is the wettest month in Great Falls with 4.4 inches of rain, and the driest month is February with 2.7 inches. The wettest season is Summer with 27% of yearly precipitation and 21% occurs in Spring, which is the driest season. The annual rainfall of 42.4 inches in Great Falls means that it is drier than most places in Virginia.
May is the rainiest month in Great Falls with 12.0 days of rain, and October is the driest month with only 8.2 rainy days. There are 116.3 rainy days annually in Great Falls, which is about average compared to other places in Virginia. The rainiest season is Summer when it rains 28% of the time and the driest is Winter with only a 23% chance of a rainy day.
An annual snowfall of 21.5 inches in Great Falls means that it is one of the snowiest places in Virginia. February is the snowiest month in Great Falls with 7.8 inches of snow, and 5 months of the year have significant snowfall.
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Karen · Great Falls, VA
Great Falls, Virginia
Over 16 years ago

Close to Washington, DC (so you get the benefits of a major metropolitan area), yet maintains a semi-rural character. No multi-family housing. Excellent school system.  More

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Ellen · Great Falls, VA
expensive housing
Over 17 years ago

We actually live in a small part of Great Falls that is located in Loudoun County, but this comment actually applies to the bulk of the area in Northern Virginia.   More

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Richard · Great Falls, VA
Too Much Money
Over 18 years ago

It takes way too much money out here for anyone who is just starting or trying to get a foothold in the working world. You cannot afford to live anywhere without having  More

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