average temperature in blountville tn
Blountville, TN Weather. Blountville, TN climate is warm during summer when temperatures tend to be in the 70's and very cold during winter when temperatures tend to be in the 30's.emperature variations between night and day tend to be moderate during summer with a difference that can reach 22 degrees Fahrenheit, and moderate during winter with an average difference of 21 degrees Fahrenheit. The annual average precipitation at Blountville is 41.33 Inches.