The climate in 37921 Knoxville, TN is generally mild and temperate. Summers are hot and humid, while winters are chilly but not extreme. Spring and fall tend to be pleasant with warm days and cool nights. Precipitation is spread evenly throughout the year and snowfall does occur occasionally during winter months. The average annual temperature for Knoxville is 63 F (17 C).
Knoxville (zip 37921), Tennessee gets 50 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Knoxville (zip 37921) averages 6 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 204 sunny days per year in Knoxville (zip 37921). The US average is 205 sunny days.
Knoxville (zip 37921) gets some kind of precipitation, on average, 127 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 50 inches of rain a year
Snow: averages 6 inches of snow a year