Grainger County, TN Climate

Grainger County in Tennessee has an overall temperate climate with warm summers and mild winters. During the summer months temperatures can reach up to 90 degrees Fahrenheit, while during winter months the average temperature is around 40 degrees Fahrenheit. Rainfall is fairly abundant throughout the year, with an average of 48 inches of rain per year. The area experiences all four seasons and this contributes to its beautiful rolling hillsides that make it a great place to visit or live.

Grainger County, Tennessee gets 47 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Grainger County averages 10 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 Grainger County. The US average is 205 sunny days.

Grainger 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 87 degrees
Winter Low: the January low is 26
Rain: averages 47 inches of rain a year
Snow: averages 10 inches of snow a year

Bestplaces Comfort Index

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

7.7 Summer - 5.9 Winter

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

Climate	Grainger, Tennessee	United States
	46.9 in.	38.1 in.
	10.4 in.	27.8 in.
	133.5 days	106.2 days
	205 days	205 days
	86.5°	85.8°
	25.5°	21.7°
	7.3	7
	4.5	4.3
	1284 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 Grainger County with an average high temperature of 86.5°, which ranks it as cooler than most places in Tennessee. In Grainger County, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Grainger County are May, September and June.

In Grainger County, there are 17.7 days annually when the high temperature is over 90°, which is cooler than most places in Tennessee.

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

In Grainger County, there are 94.0 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Tennessee.

In Grainger 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 Grainger 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 Grainger County.

July is the wettest month in Grainger County with 4.8 inches of rain, and the driest month is October with 2.4 inches. The wettest season is Summer with 27% of yearly precipitation and 20% occurs in Winter, which is the driest season. The annual rainfall of 46.9 inches in Grainger County means that it is drier than most places in Tennessee.

March is the rainiest month in Grainger County with 12.8 days of rain, and September is the driest month with only 8.5 rainy days. There are 133.5 rainy days annually in Grainger 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 10.4 inches in Grainger County means that it is one of the snowiest places in Tennessee. February is the snowiest month in Grainger County with 3.4 inches of snow, and 4 months of the year have significant snowfall.

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