Sumner County, TN Climate

Sumner County, TN has a humid subtropical climate that is characterized by hot and humid summers and mild, wet winters. Average summer temperatures reach the high 80s and low 90s while winter temperatures average in the 40s to 50s. Sumner County receives an average of about 51 inches of rainfall per year with most of that falling during the warmer months. The area experiences occasional thunderstorms and other weather events such as snowfall each year as well. This climate makes it ideal for growing a variety of crops, vegetables, and fruits throughout the year.

Sumner County, Tennessee gets 52 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Sumner County averages 4 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 208 sunny days per year in Sumner County. The US average is 205 sunny days.

Sumner County gets some kind of precipitation, on average, 113 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 26
Rain: averages 52 inches of rain a year
Snow: averages 4 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Sumner County is 7.3 (10=best), which means it is about average compared to other places in Tennessee.

7.2 Summer - 6 Winter

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

Climate	Sumner, Tennessee	United States
	51.5 in.	38.1 in.
	4.1 in.	27.8 in.
	113.3 days	106.2 days
	208 days	205 days
	88.5°	85.8°
	26.1°	21.7°
	7.3	7
	4.6	4.3
	690 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 Sumner County with an average high temperature of 88.5°, which ranks it as about average compared to other places in Tennessee. In Sumner County, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Sumner County are May, September and June.

In Sumner County, there are 33.5 days annually when the high temperature is over 90°, which is about average compared to other places in Tennessee.

January has the coldest nighttime temperatures for Sumner County with an average of 26.1°. This is about average compared to other places in Tennessee.

In Sumner County, there are 84.6 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Tennessee.

In Sumner 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 can be uncomfortably heavy or close in Sumner 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 Sumner County.

May is the wettest month in Sumner County with 5.8 inches of rain, and the driest month is August with 3.5 inches. The wettest season is Summer with 29% of yearly precipitation and 23% occurs in Winter, which is the driest season. The annual rainfall of 51.5 inches in Sumner County means that it is drier than most places in Tennessee.

May is the rainiest month in Sumner County with 11.3 days of rain, and September is the driest month with only 7.3 rainy days. There are 113.3 rainy days annually in Sumner County, which is about average compared to other places in Tennessee. The rainiest season is Summer when it rains 29% of the time and the driest is Winter with only a 22% chance of a rainy day.

An annual snowfall of 4.1 inches in Sumner County means that it is about average compared to other places in Tennessee. February is the snowiest month in Sumner County with 1.7 inches of snow, and 3 months of the year have significant snowfall.

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