Knox County, TN Climate

Knox County, TN has a humid subtropical climate, characterized by hot summers and mild winters. Temperatures generally remain warm throughout the year with average highs in summer ranging from the mid-80s to low 90s Fahrenheit and average lows in winter ranging from the upper-30s to mid-40s Fahrenheit. Precipitation is fairly consistent throughout the year, with rain being most prevalent during the spring and fall months. During summer months, Knox County experiences periods of high humidity and occasional thunderstorms. Snowfall is infrequent but does occur during winter months at times.

Knox County, Tennessee gets 51 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Knox County averages 6 inches of snow per year. The US average is 28 inches of snow per year.

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

Knox County gets some kind of precipitation, on average, 126 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 88 degrees
Winter Low: the January low is 28
Rain: averages 51 inches of rain a year
Snow: averages 6 inches of snow a year

Bestplaces Comfort Index

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

7.2 Summer - 6.1 Winter

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

Climate	Knox, Tennessee	United States
	50.5 in.	38.1 in.
	5.7 in.	27.8 in.
	126.1 days	106.2 days
	205 days	205 days
	88.0°	85.8°
	27.5°	21.7°
	7.3	7
	4.6	4.3
	1004 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 Knox County with an average high temperature of 88.0°, which ranks it as cooler than most places in Tennessee. In Knox County, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Knox County are May, September and October.

In Knox County, there are 29.8 days annually when the high temperature is over 90°, which is cooler than most places in Tennessee.

January has the coldest nighttime temperatures for Knox County with an average of 27.5°. This is warmer than most places in Tennessee.

In Knox County, there are 81.0 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Tennessee.

In Knox County, there are 0.4 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Tennessee.

Humidity in Knox County can be uncomfortable during the summer, but comfortable for most of the year. The most uncomfortably humid months are July, August and June. The humid season runs from June-September and the most comfortable months are October-May.

July is the wettest month in Knox County with 5.2 inches of rain, and the driest month is October with 2.8 inches. The wettest season is Spring with 27% of yearly precipitation and 21% occurs in Winter, which is the driest season. The annual rainfall of 50.5 inches in Knox County means that it is drier than most places in Tennessee.

July is the rainiest month in Knox County with 12.0 days of rain, and September is the driest month with only 8.0 rainy days. There are 126.1 rainy days annually in Knox County, which is rainier than most places in Tennessee. 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 5.7 inches in Knox County means that it is snowier than most places in Tennessee. January is the snowiest month in Knox County with 2.3 inches of snow, and 4 months of the year have significant snowfall.

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