Knoxville, TN Climate

Summary Graph

The summary climate graph for Knoxville, TN shows a selection of temperature, rainfall and snow minimum, mean and maximum measures over the course of a year. Click on each of the measures in the key to toggle them on and off.

Graph of average and extreme temperature ranges by day for Knoxville, TN.


The warmest month in Mc Ghee Tyson, Knoxville, Tennessee is July with an average high temperature of 88.7°F. The hottest day on record was June 30 2012 when the temperature hit 105.1°F. During January the overnight temperature drops to an average of 29.7°F with the lowest temperature of -24.0°F being recorded on January 21 1985.

Warmest Days

Warmest Months

Coldest Days

Coldest Months

The warmest days on record are:

30 Jun 2012105.1°F
2 Jul 2012105.1°F
28 Jul 1952102.9°F
5 Sep 1954102.9°F
10 Jul 1988102.2°F

The warmest months on average were:

August 200795.1°F
July 198694.8°F
July 199394.4°F
July 198093.5°F
August 198793.5°F

The coldest days on record are:

21 Jan 1985-24°F
26 Dec 1983-6°F
5 Feb 1996-6°F
24 Jan 1963-5.1°F
17 Jan 1982-5.1°F

The coldest months on average were:

January 197717.8°F
January 198519.4°F
January 197820°F
January 198621.3°F
January 198822.3°F


The wettest month in Knoxville, TN is March with an average of 3.4 inches of rain falling on 13 to 14 days. The driest month by average rainfall in Knoxville, TN is October with an average of 1.8 inches of rain falling on 9 to 9 days. Although in September it typically rains on less days with 2.4 inches falling in 8 to 9 days

Wettest Days

The wettest days on record are:

27 October 20102.5 inches
16 October 19742.2 inches
19 October 20111.8 inches
13 October 19821.7 inches
26 October 19771.7 inches

Wettest Months

The wettest months on record are:

March 197314.9 inches
July 199912.7 inches
March 199412.1 inches
May 200311.9 inches
May 197411.6 inches

Driest Months

The driest months on record are:

February 19480 inches
March 19480 inches
April 19480 inches
May 19480 inches
June 19480 inches