Washington County, TN Climate

Washington, TN County has a moderate climate. The average summer temperatures range from the high 70s to the mid 80s, while winter temperatures range from the mid 40s to the mid 50s. Rainfall is fairly consistent throughout the year and snowfall is usually light due to its location in the Southern Appalachians. The area experiences four distinct seasons with crisp autumn days and mild winters. Springtime is generally pleasant with warm days but cool nights, while summer can be hot and humid during certain times of the year.

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

Washington County averages 11 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 200 sunny days per year in Washington County. The US average is 205 sunny days.

Washington County gets some kind of precipitation, on average, 135 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 26
Rain: averages 43 inches of rain a year
Snow: averages 11 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Washington County is 7.5 (10=best), which means it is one of the most pleasant places in Tennessee.

8.3 Summer - 5.9 Winter

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

Climate	Washington, Tennessee	United States
	43.4 in.	38.1 in.
	10.7 in.	27.8 in.
	134.6 days	106.2 days
	200 days	205 days
	85.8°	85.8°
	25.5°	21.7°
	7.5	7
	4.8	4.3
	1712 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 Washington County with an average high temperature of 85.8°, which ranks it as cooler than most places in Tennessee. In Washington County, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Washington County are September, May and June.

In Washington County, there are 16.0 days annually when the high temperature is over 90°, which is cooler than most places in Tennessee.

January has the coldest nighttime temperatures for Washington County with an average of 25.5°. This is colder than most places in Tennessee.

In Washington County, there are 94.9 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Tennessee.

In Washington County, there are 0.7 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Tennessee.

The humidity is usually acceptable in Washington County 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 Washington County.

July is the wettest month in Washington County with 5.2 inches of rain, and the driest month is October with 2.2 inches. The wettest season is Autumn with 31% of yearly precipitation and 19% occurs in Winter, which is the driest season. The annual rainfall of 43.4 inches in Washington County means that it is one of the driest places in Tennessee.

July is the rainiest month in Washington County with 12.8 days of rain, and October is the driest month with only 8.4 rainy days. There are 134.6 rainy days annually in Washington County, which is one of the rainiest places in Tennessee. The rainiest season is Summer when it rains 27% of the time and the driest is Winter with only a 20% chance of a rainy day.

An annual snowfall of 10.7 inches in Washington County means that it is one of the snowiest places in Tennessee. January is the snowiest month in Washington County with 3.9 inches of snow, and 5 months of the year have significant snowfall.

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