Weather on August 20
Chattanooga, TN
55 Years of Data
About This Date
August 20th in Chattanooga, TN typically brings hot summer weather, with average highs around 90°F and lows near 69°F. Over 55 years of records, the warmest August 20th was in 1983 (89°F average), while the coldest was 1976 (71°F) — a 18°F range across recorded history. Rain or other precipitation has occurred on about 35% of August 20th dates historically, with the wettest August 20th recording 4.34" 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 20th in Chattanooga, TN? Stay hydrated and seek shade during peak afternoon hours. Consider bringing rain gear or an umbrella.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 92° | 73° | 82° | 2.11" | — |
| 2024 | 88° | 65° | 76° | — | — |
| 2023 | 93° | 66° | 80° | — | — |
| 2022 | 84° | 72° | 78° | 3.07" | — |
| 2021 | 87° | 73° | 80° | 0.03" | — |
| 2020 | 89° | 70° | 79° | — | — |
| 2019 | 95° | 71° | 83° | — | — |
| 2018 | 86° | 74° | 80° | 0.25" | — |
| 2017 | 94° | 69° | 81° | — | — |
| 2016 | 90° | 73° | 81° | 0.25" | — |
| 2015 | 84° | 72° | 78° | — | — |
| 2014 | 95° | 72° | 83° | 0.76" | — |
| 2013 | 85° | 70° | 77° | — | — |
| 2012 | 86° | 61° | 73° | — | — |
| 2011 | 99° | 70° | 84° | — | — |
| 2010 | 94° | 72° | 83° | — | — |
| 2009 | 90° | 72° | 81° | 0.23" | — |
| 2008 | 94° | 69° | 81° | — | — |
| 2007 | 99° | 73° | 86° | — | — |
| 2006 | 94° | 73° | 83° | 2.82" | — |
| 2005 | 96° | 75° | 86° | — | — |
| 2004 | 87° | 68° | 78° | 2.62" | — |
| 2003 | 89° | 72° | 80° | — | — |
| 2002 | 96° | 71° | 84° | — | — |
| 2001 | 85° | 65° | 75° | — | — |
| 2000 | 86° | 70° | 78° | — | — |
| 1999 | 94° | 72° | 83° | — | — |
| 1998 | 85° | 71° | 78° | — | — |
| 1997 | 84° | 70° | 77° | 0.64" | — |
| 1996 | 88° | 67° | 77° | 0.13" | — |
| 1995 | 84° | 74° | 79° | 1.09" | — |
| 1994 | 86° | 67° | 76° | 4.34" | — |
| 1993 | 99° | 74° | 86° | — | — |
| 1992 | 85° | 64° | 74° | — | — |
| 1991 | 83° | 60° | 71° | — | — |
| 1990 | 98° | 72° | 85° | — | — |
| 1989 | 91° | 66° | 79° | — | — |
| 1988 | 85° | 72° | 78° | 2.21" | — |
| 1987 | 93° | 65° | 79° | — | — |
| 1986 | 89° | 69° | 79° | 2.44" | — |
| 1985 | 88° | 71° | 79° | — | — |
| 1984 | 86° | 69° | 78° | — | — |
| 1983warmest | 102° | 75° | 89° | — | — |
| 1982 | 91° | 66° | 79° | — | — |
| 1981 | 74° | 68° | 71° | 3.58" | — |
| 1980 | 95° | 72° | 83° | — | — |
| 1979 | 93° | 70° | 81° | 0.05" | — |
| 1978 | 88° | 73° | 80° | — | — |
| 1977 | 86° | 69° | 78° | — | — |
| 1976coldest | 86° | 56° | 71° | — | — |
| 1975 | 88° | 65° | 76° | — | — |
| 1974 | 86° | 65° | 75° | — | — |
| 1973 | 91° | 66° | 79° | 0.13" | — |
| 1972 | 90° | 66° | 78° | 0.79" | — |
| 1971 | 90° | 71° | 80° | — | — |