Dumbarton, VA Climate


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United States / Virginia / Richmond Metro Area / Henrico County / Dumbarton / Zip Codes
Dumbarton, VA has a humid subtropical climate, characterized by hot and humid summers with frequent rainfall, and mild winters with occasional snowfall. Average summer temperatures range from the mid 70s to the low 80s, while winter temperatures generally remain in the 40s and 50s. Rainfall averages around 43 inches throughout the year, with more intense rain in the summer months. Snowfall is light but can occasionally occur between December and February.

Dumbarton, Virginia gets 44 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Dumbarton averages 12 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 207 sunny days per year in Dumbarton. The US average is 205 sunny days.

Dumbarton gets some kind of precipitation, on average, 112 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 89 degrees
Winter Low: the January low is 28
Rain: averages 44 inches of rain a year
Snow: averages 12 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Dumbarton is 7.4 (10=best), which means it is more comfortable than most places in Virginia.

7.3 Summer - 6.2 Winter
September, May and October are the most pleasant months in Dumbarton, while January and February are the least comfortable months.

  ClimateDumbarton, VirginiaUnited States
  43.9 in.38.1 in.
  11.9 in.27.8 in.
  111.5 days106.2 days
  207 days205 days
  88.8°85.8°
  27.7°21.7°
  7.47
  4.54.3
  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 Dumbarton with an average high temperature of 88.8°, which ranks it as warmer than most places in Virginia. In Dumbarton, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Dumbarton are May, September and June.
In Dumbarton, there are 36.6 days annually when the high temperature is over 90°, which is hotter than most places in Virginia.
January has the coldest nighttime temperatures for Dumbarton with an average of 27.7°. This is warmer than most places in Virginia.
In Dumbarton, there are 79.6 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Virginia.
In Dumbarton, 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 Dumbarton 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 Dumbarton.
August is the wettest month in Dumbarton with 4.4 inches of rain, and the driest month is February with 2.9 inches. The wettest season is Autumn with 28% of yearly precipitation and 22% occurs in Spring, which is the driest season. The annual rainfall of 43.9 inches in Dumbarton means that it is about average compared to other places in Virginia.
July is the rainiest month in Dumbarton with 10.8 days of rain, and October is the driest month with only 7.3 rainy days. There are 111.5 rainy days annually in Dumbarton, which is less rainy than most places in Virginia. The rainiest season is Summer when it rains 27% of the time and the driest is Winter with only a 21% chance of a rainy day.
An annual snowfall of 11.9 inches in Dumbarton means that it is less snowy than most places in Virginia. January is the snowiest month in Dumbarton with 4.8 inches of snow, and 4 months of the year have significant snowfall.
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