Weather on August 18
Knoxville, TN
55 Years of Data
Avg High
87°F
Avg Low
67°F
Warmest
2016
86°F avg
Coldest
1985
70°F avg
About This Date
August 18th in Knoxville, TN typically brings warm summer weather, with average highs around 87°F and lows near 67°F. Over 55 years of records, the warmest August 18th was in 2016 (86°F average), while the coldest was 1985 (70°F) — a 16°F range across recorded history. Rain or other precipitation has occurred on about 42% of August 18th dates historically, with the wettest August 18th recording 7.87" of rain. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for August 18th in Knoxville, TN? Stay hydrated and seek shade during peak afternoon hours. Consider bringing rain gear or an umbrella.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 91° | 65° | 78° | 0.08" | — |
| 2024 | 86° | 67° | 76° | 1.32" | — |
| 2023 | 86° | 65° | 75° | — | — |
| 2022 | 86° | 65° | 75° | — | — |
| 2021 | 77° | 69° | 73° | 7.87" | — |
| 2020 | 86° | 61° | 73° | — | — |
| 2019 | 94° | 65° | 79° | — | — |
| 2018 | 90° | 70° | 80° | — | — |
| 2017 | 89° | 71° | 80° | 0.74" | — |
| 2016warmest | 96° | 75° | 86° | — | — |
| 2015 | 80° | 70° | 75° | — | — |
| 2014 | 85° | 61° | 73° | 0.66" | — |
| 2013 | 80° | 67° | 73° | 0.61" | — |
| 2012 | 81° | 62° | 71° | — | — |
| 2011 | 91° | 66° | 79° | — | — |
| 2010 | 89° | 72° | 80° | — | — |
| 2009 | 88° | 68° | 78° | — | — |
| 2008 | 88° | 58° | 73° | — | — |
| 2007 | 98° | 66° | 82° | — | — |
| 2006 | 92° | 68° | 80° | — | — |
| 2005 | 91° | 71° | 81° | 1.27" | — |
| 2004 | 82° | 60° | 71° | — | — |
| 2003 | 87° | 66° | 77° | 2.03" | — |
| 2002 | 89° | 68° | 79° | 0.48" | — |
| 2001 | 86° | 62° | 74° | 0.58" | — |
| 2000 | 95° | 69° | 82° | — | — |
| 1999 | 95° | 66° | 81° | — | — |
| 1998 | 83° | 64° | 73° | — | — |
| 1997 | 94° | 69° | 81° | 0.41" | — |
| 1996 | 88° | 65° | 76° | — | — |
| 1995 | 98° | 69° | 84° | — | — |
| 1994 | 84° | 63° | 73° | 0.05" | — |
| 1993 | 90° | 67° | 78° | 0.36" | — |
| 1992 | 87° | 62° | 75° | 0.38" | — |
| 1991 | 86° | 60° | 73° | 0.36" | — |
| 1990 | 87° | 66° | 77° | — | — |
| 1989 | 82° | 65° | 73° | — | — |
| 1988 | 99° | 70° | 84° | — | — |
| 1987 | 89° | 68° | 79° | 0.23" | — |
| 1986 | 80° | 68° | 74° | — | — |
| 1985coldest | 73° | 66° | 70° | 0.61" | — |
| 1984 | 87° | 64° | 76° | — | — |
| 1983 | 91° | 68° | 80° | — | — |
| 1982 | 85° | 65° | 75° | 4.22" | — |
| 1981 | 86° | 70° | 78° | — | — |
| 1980 | 92° | 72° | 82° | 0.38" | — |
| 1979 | 81° | 66° | 73° | — | — |
| 1978 | 89° | 71° | 80° | 0.51" | — |
| 1977 | 81° | 67° | 74° | 1.98" | — |
| 1976 | 83° | 60° | 71° | — | — |
| 1975 | 88° | 69° | 78° | 4.04" | — |
| 1974 | 86° | 66° | 76° | — | — |
| 1973 | 77° | 67° | 72° | 0.05" | — |
| 1972 | 87° | 72° | 79° | — | — |
| 1971 | 85° | 66° | 75° | — | — |
55 years of data from KNOXVILLE UNIV OF TENN