Heiskell, TN is characterized by its hot summers and cold winters. The hottest months of the year are generally July and August when temperatures can reach up to 90 degrees Fahrenheit with high humidity. In the winter months, average temperatures in January and February dip to around 30-40 degrees Fahrenheit with occasional sleet or snowfall. Rainfall is generally spread evenly throughout the year, with July and August having slightly higher amounts, averaging around 4 inches per month. Wind speeds are typically moderate throughout the year.
Heiskell (zip 37754), Tennessee gets 54 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Heiskell (zip 37754) averages 6 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 Heiskell (zip 37754). The US average is 205 sunny days.
Heiskell (zip 37754) gets some kind of precipitation, on average, 126 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 54 inches of rain a year
Snow: averages 6 inches of snow a year