Weather on May 15
Knoxville, TN
55 Years of Data
Avg High
78°F
Avg Low
54°F
Warmest
1982
78°F avg
Coldest
1978
52°F avg
About This Date
May 15th in Knoxville, TN typically brings pleasant spring weather, with average highs around 78°F and lows near 54°F. Over 55 years of records, the warmest May 15th was in 1982 (78°F average), while the coldest was 1978 (52°F) — a 26°F range across recorded history. Rain or other precipitation has occurred on about 35% of May 15th dates historically, with the wettest May 15th recording 4.78" of rain. The last decade has been 1.2°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.2°F warmer on this date compared to 20-30 years ago.
Planning for May 15th in Knoxville, TN? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 81° | 59° | 70° | — | — |
| 2024 | 77° | 56° | 66° | 1.5" | — |
| 2023 | 84° | 60° | 72° | — | — |
| 2022 | 81° | 62° | 71° | — | — |
| 2021 | 73° | 41° | 57° | — | — |
| 2020 | 81° | 46° | 63° | — | — |
| 2019 | 67° | 42° | 54° | — | — |
| 2018 | 93° | 60° | 77° | — | — |
| 2017 | 81° | 52° | 66° | — | — |
| 2016 | 66° | 50° | 58° | — | — |
| 2015 | 83° | 61° | 72° | — | — |
| 2014 | 88° | 57° | 72° | 1.14" | — |
| 2013 | 77° | 48° | 63° | — | — |
| 2012 | 75° | 57° | 66° | 0.1" | — |
| 2011 | 77° | 57° | 67° | — | — |
| 2010 | 87° | 59° | 73° | 0.08" | — |
| 2009 | 81° | 61° | 71° | 1.93" | — |
| 2008 | 69° | 55° | 62° | 0.15" | — |
| 2007 | 81° | 56° | 68° | — | — |
| 2006 | 65° | 42° | 53° | — | — |
| 2005 | 81° | 60° | 70° | 0.56" | — |
| 2004 | 82° | 58° | 70° | — | — |
| 2003 | 74° | 62° | 68° | — | — |
| 2002 | 70° | 43° | 56° | — | — |
| 2001 | 78° | 51° | 65° | — | — |
| 2000 | 73° | 49° | 61° | — | — |
| 1999 | 71° | 48° | 60° | 0.3" | — |
| 1998 | 87° | 61° | 74° | — | — |
| 1997 | 79° | 45° | 62° | — | — |
| 1996 | 69° | 43° | 56° | 2.54" | — |
| 1995 | 77° | 62° | 70° | 0.84" | — |
| 1994 | 82° | 57° | 70° | 0.69" | — |
| 1993 | 74° | 49° | 61° | — | — |
| 1992 | 81° | 57° | 69° | — | — |
| 1991 | 83° | 62° | 72° | — | — |
| 1990 | 80° | 54° | 67° | — | — |
| 1989 | 66° | 50° | 58° | 0.08" | — |
| 1988 | 86° | 54° | 70° | — | — |
| 1987 | 82° | 58° | 70° | — | — |
| 1986 | 86° | 57° | 72° | — | — |
| 1985 | 87° | 64° | 76° | — | — |
| 1984 | 79° | 43° | 61° | — | — |
| 1983 | 72° | 61° | 66° | 0.86" | — |
| 1982warmest | 89° | 66° | 78° | — | — |
| 1981 | 82° | 53° | 68° | 0.53" | — |
| 1980 | 74° | 54° | 64° | — | — |
| 1979 | 73° | 50° | 62° | — | — |
| 1978coldest | 56° | 49° | 52° | 0.2" | — |
| 1977 | 80° | 57° | 69° | — | — |
| 1976 | 76° | 52° | 64° | 4.78" | — |
| 1975 | 74° | 63° | 68° | 1.19" | — |
| 1974 | 83° | 54° | 68° | — | — |
| 1973 | 71° | 51° | 61° | — | — |
| 1972 | 78° | 59° | 69° | 0.89" | — |
| 1971 | 73° | 56° | 64° | 0.08" | — |
55 years of data from KNOXVILLE UNIV OF TENN