Sullivan County, Tennessee 

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Climate in Sullivan County, Tennessee

Sullivan County, Tennessee gets 44 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Sullivan 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 Sullivan County. The US average is 205 sunny days.

Sullivan County gets some kind of precipitation, on average, 134 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 25
Rain: averages 44 inches of rain a year
Snow: averages 11 inches of snow a year


BESTPLACES COMFORT INDEX

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

7.4 / 10
September, May and June are the most pleasant months in Sullivan County, while January and December are the least comfortable months.

Climate Averages
  Sullivan, TennesseeUnited States
  43.6 in.38.1 in.
  10.7 in.27.8 in.
  134.1 days106.2 days
  200 days205 days
  86.2°85.8°
  25.1°21.7°
  7.47
  4.44.3
  1698 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 Sullivan County with an average high temperature of 86.2°, which ranks it as cooler than most places in Tennessee. In Sullivan County, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Sullivan County are May, September and June.


January has the coldest nighttime temperatures for Sullivan County with an average of 25.1°. This is one of the coldest places in Tennessee.


In Sullivan County, there are 17.5 days annually when the high temperature is over 90°, which is cooler than most places in Tennessee.


In Sullivan County, there are 96.3 days annually when the nighttime low temperature falls below freezing, which is one of the coldest places in Tennessee.


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


July is the wettest month in Sullivan County with 4.9 inches of rain, and the driest month is October with 2.3 inches. The wettest season is Autumn with 29% of yearly precipitation and 20% occurs in Winter, which is the driest season. The annual rainfall of 43.6 inches in Sullivan County means that it is one of the driest places in Tennessee.


March is the rainiest month in Sullivan County with 12.5 days of rain, and October is the driest month with only 8.5 rainy days. There are 134.1 rainy days annually in Sullivan 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 Sullivan County means that it is one of the snowiest places in Tennessee. January is the snowiest month in Sullivan County with 4.1 inches of snow, and 5 months of the year have significant snowfall.





CLIMATE MAP
  • Annual Rainfall (US Avg: 36.5")
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    MAPS OF SULLIVAN COUNTY, TENNESSEE
    ZIP CODES IN SULLIVAN COUNTY, TENNESSEE
    37660 37620 37664 37663 37617 37618 37686 37665

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