37748 Harriman, TN has a humid subtropical climate with warm and humid summers and mild winters. The average yearly temperature in the area is around 18°C (64°F). During the summer months, temperatures can reach up to 30°C (86°F) and at night they drop to only 15°C (59°F). During winter, temperatures usually hover around 5-10°C (41-50°F). Precipitation is common throughout the year but particularly during the spring months when thunderstorms are commonplace. The area receives an average of 40 inches of rain annually.
Harriman (zip 37748), Tennessee gets 56 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Harriman (zip 37748) averages 5 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 207 sunny days per year in Harriman (zip 37748). The US average is 205 sunny days.
Harriman (zip 37748) gets some kind of precipitation, on average, 120 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 27
Rain: averages 56 inches of rain a year
Snow: averages 5 inches of snow a year