Weather on August 15
Knoxville, TN
55 Years of Data
Avg High
87°F
Avg Low
66°F
Warmest
1980
85°F avg
Coldest
2004
66°F avg
About This Date
August 15th in Knoxville, TN typically brings warm summer weather, with average highs around 87°F and lows near 66°F. Over 55 years of records, the warmest August 15th was in 1980 (85°F average), while the coldest was 2004 (66°F) — a 19°F range across recorded history. Rain or other precipitation has occurred on about 24% of August 15th dates historically, with the wettest August 15th recording 2.36" of rain. The last decade has been 3.6°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.6°F warmer on this date compared to 20-30 years ago.
Planning for August 15th in Knoxville, TN? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 89° | 69° | 79° | 0.05" | — |
| 2024 | 91° | 64° | 78° | — | — |
| 2023 | 88° | 69° | 78° | 1.5" | — |
| 2022 | 80° | 69° | 75° | — | — |
| 2021 | 97° | 73° | 85° | — | — |
| 2020 | 87° | 70° | 78° | — | — |
| 2019 | 92° | 64° | 78° | — | — |
| 2018 | 87° | 66° | 77° | — | — |
| 2017 | 88° | 70° | 79° | — | — |
| 2016 | 92° | 73° | 82° | — | — |
| 2015 | 86° | 63° | 74° | — | — |
| 2014 | 82° | 60° | 71° | — | — |
| 2013 | 79° | 61° | 70° | — | — |
| 2012 | 82° | 63° | 72° | — | — |
| 2011 | 89° | 64° | 77° | — | — |
| 2010 | 96° | 72° | 84° | — | — |
| 2009 | 89° | 68° | 79° | — | — |
| 2008 | 87° | 61° | 74° | — | — |
| 2007 | 95° | 64° | 80° | — | — |
| 2006 | 90° | 71° | 80° | 0.23" | — |
| 2005 | 90° | 69° | 79° | 0.03" | — |
| 2004coldest | 77° | 56° | 66° | — | — |
| 2003 | 92° | 71° | 81° | — | — |
| 2002 | 91° | 67° | 79° | — | — |
| 2001 | 87° | 65° | 76° | — | — |
| 2000 | 87° | 60° | 74° | — | — |
| 1999 | 85° | 63° | 74° | — | — |
| 1998 | 79° | 67° | 73° | 2.36" | — |
| 1997 | 90° | 68° | 79° | — | — |
| 1996 | 84° | 60° | 72° | — | — |
| 1995 | 97° | 70° | 83° | — | — |
| 1994 | 86° | 66° | 76° | 1.17" | — |
| 1993 | 89° | 65° | 77° | — | — |
| 1992 | 84° | 60° | 72° | 0.66" | — |
| 1991 | 77° | 60° | 69° | 2.29" | — |
| 1990 | 85° | 68° | 76° | — | — |
| 1989 | 84° | 67° | 75° | — | — |
| 1988 | 94° | 71° | 82° | — | — |
| 1987 | 90° | 62° | 76° | — | — |
| 1986 | 88° | 68° | 78° | — | — |
| 1985 | 92° | 65° | 78° | — | — |
| 1984 | 88° | 65° | 76° | — | — |
| 1983 | 84° | 63° | 73° | — | — |
| 1982 | 82° | 69° | 76° | — | — |
| 1981 | 91° | 64° | 78° | — | — |
| 1980warmest | 96° | 74° | 85° | — | — |
| 1979 | 81° | 66° | 73° | — | — |
| 1978 | 87° | 69° | 78° | 0.41" | — |
| 1977 | 83° | 71° | 77° | 0.51" | — |
| 1976 | 90° | 70° | 80° | — | — |
| 1975 | 90° | 74° | 82° | — | — |
| 1974 | 86° | 70° | 78° | 0.3" | — |
| 1973 | 82° | 66° | 74° | 0.18" | — |
| 1972 | 88° | 68° | 78° | — | — |
| 1971 | 83° | 64° | 73° | 0.03" | — |
55 years of data from KNOXVILLE UNIV OF TENN