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.
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.
The warmest days on record are:
| 30 Jun 2012 | 105.1°F |
| 2 Jul 2012 | 105.1°F |
| 28 Jul 1952 | 102.9°F |
| 5 Sep 1954 | 102.9°F |
| 10 Jul 1988 | 102.2°F |
The warmest months on average were:
| August 2007 | 95.1°F |
| July 1986 | 94.8°F |
| July 1993 | 94.4°F |
| July 1980 | 93.5°F |
| August 1987 | 93.5°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 1977 | 17.8°F |
| January 1985 | 19.4°F |
| January 1978 | 20°F |
| January 1986 | 21.3°F |
| January 1988 | 22.3°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
The wettest days on record are:
| 12 August 1983 | 3 inches |
| 28 August 2009 | 2.8 inches |
| 29 August 2006 | 2.6 inches |
| 10 August 2012 | 2.2 inches |
| 30 August 2007 | 1.9 inches |
The wettest months on record are:
| March 1973 | 14.9 inches |
| July 1999 | 12.7 inches |
| March 1994 | 12.1 inches |
| May 2003 | 11.9 inches |
| May 1974 | 11.6 inches |
The driest months on record are:
| February 1948 | 0 inches |
| March 1948 | 0 inches |
| April 1948 | 0 inches |
| May 1948 | 0 inches |
| June 1948 | 0 inches |