District of Columbia County, DC Climate

District of Columbia, DC County has a humid subtropical climate characterized by hot and humid summers with frequent thunderstorms and mild winters. The average temperature ranges from a low of 27°F in January to a high of 87°F in July. During the summer months, temperatures often reach into the 90s. Precipitation is evenly distributed throughout the year with an average annual total of 39 inches. Snowfall occurs on average between December and March each year with an average total of 15 inches annually.

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

District of Columbia County averages 14 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 District of Columbia County. The US average is 205 sunny days.

District of Columbia County gets some kind of precipitation, on average, 115 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 27
Rain: averages 43 inches of rain a year
Snow: averages 14 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for District of Columbia County is 7.3 (10=best), which means it is one of the most pleasant places in the District of Columbia.

7.5 Summer - 6 Winter

September, May and October are the most pleasant months in District of Columbia County, while January and February are the least comfortable months.

Climate	District of Columbia, District of Columbia	United States
	43.1 in.	38.1 in.
	13.6 in.	27.8 in.
	115.3 days	106.2 days
	202 days	205 days
	88.7°	85.8°
	26.7°	21.7°
	7.3	7
	4.1	4.3
	135 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 District of Columbia County with an average high temperature of 88.7°, which ranks it as one of the hottest places in the District of Columbia. In District of Columbia County, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for District of Columbia County are May, September and June.

In District of Columbia County, there are 35.7 days annually when the high temperature is over 90°, which is one of the coolest places in the District of Columbia.

January has the coldest nighttime temperatures for District of Columbia County with an average of 26.7°. This is one of the warmest places in the District of Columbia.

In District of Columbia County, there are 77.6 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in the District of Columbia.

In District of Columbia County, there are 0.2 days annually when the nighttime low temperature falls below zero°, which is one of the warmest places in the District of Columbia.

The humidity can be uncomfortably heavy or close in District of Columbia 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 District of Columbia County.

July is the wettest month in District of Columbia County with 4.3 inches of rain, and the driest month is February with 2.8 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 43.1 inches in District of Columbia County means that it is one of the driest places in the District of Columbia.

May is the rainiest month in District of Columbia County with 11.6 days of rain, and October is the driest month with only 8.2 rainy days. There are 115.3 rainy days annually in District of Columbia County, which is one of the rainiest places in the District of Columbia. 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 13.6 inches in District of Columbia County means that it is one of the least snowy places in the District of Columbia. January is the snowiest month in District of Columbia County with 5.4 inches of snow, and 5 months of the year have significant snowfall.

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