Weather on May 20
Chattanooga, TN
55 Years of Data
Avg High
81°F
Avg Low
59°F
Warmest
2017
80°F avg
Coldest
2002
55°F avg
About This Date
May 20th in Chattanooga, TN typically brings warm spring weather, with average highs around 81°F and lows near 59°F. Over 55 years of records, the warmest May 20th was in 2017 (80°F average), while the coldest was 2002 (55°F) — a 25°F range across recorded history. Rain or other precipitation has occurred on about 40% of May 20th dates historically, with the wettest May 20th recording 2.21" 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 May 20th in Chattanooga, TN? Stay hydrated and seek shade during peak afternoon hours. Consider bringing rain gear or an umbrella.
Warming Trend
1.2°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 87° | 70° | 78° | 1.4" | — |
| 2024 | 87° | 64° | 76° | — | — |
| 2023 | 71° | 65° | 68° | 1.37" | — |
| 2022 | 90° | 69° | 79° | — | — |
| 2021 | 84° | 63° | 73° | — | — |
| 2020 | 68° | 61° | 64° | 0.61" | — |
| 2019 | 88° | 66° | 77° | — | — |
| 2018 | 92° | 67° | 79° | 0.08" | — |
| 2017warmest | 91° | 68° | 80° | 1.27" | — |
| 2016 | 67° | 64° | 65° | 0.61" | — |
| 2015 | 88° | 62° | 75° | 0.58" | — |
| 2014 | 85° | 55° | 70° | — | — |
| 2013 | 84° | 59° | 72° | — | — |
| 2012 | 86° | 61° | 73° | — | — |
| 2011 | 85° | 58° | 71° | — | — |
| 2010 | 83° | 58° | 70° | 1.45" | — |
| 2009 | 82° | 49° | 65° | — | — |
| 2008 | 85° | 65° | 75° | — | — |
| 2007 | 84° | 47° | 65° | — | — |
| 2006 | 87° | 58° | 72° | 0.79" | — |
| 2005 | 76° | 62° | 69° | 1.35" | — |
| 2004 | 88° | 64° | 76° | — | — |
| 2003 | 70° | 58° | 64° | 0.48" | — |
| 2002coldest | 68° | 41° | 55° | — | — |
| 2001 | 81° | 68° | 74° | 0.05" | — |
| 2000 | 80° | 66° | 73° | 0.08" | — |
| 1999 | 81° | 54° | 67° | — | — |
| 1998 | 91° | 65° | 78° | — | — |
| 1997 | 77° | 62° | 70° | — | — |
| 1996 | 90° | 64° | 77° | — | — |
| 1995 | 78° | 53° | 66° | — | — |
| 1994 | 73° | 51° | 62° | — | — |
| 1993 | 70° | 50° | 60° | 0.25" | — |
| 1992 | 77° | 62° | 70° | — | — |
| 1991 | 81° | 64° | 72° | — | — |
| 1990 | 79° | 64° | 71° | 0.84" | — |
| 1989 | 78° | 60° | 69° | 2.21" | — |
| 1988 | 84° | 52° | 68° | — | — |
| 1987 | 90° | 66° | 78° | 0.94" | — |
| 1986 | 73° | 57° | 65° | — | — |
| 1985 | 83° | 56° | 69° | — | — |
| 1984 | 82° | 55° | 69° | — | — |
| 1983 | 68° | 62° | 65° | 1.65" | — |
| 1982 | 77° | 61° | 69° | 0.18" | — |
| 1981 | 61° | 55° | 58° | — | — |
| 1980 | 75° | 59° | 67° | 1.12" | — |
| 1979 | 85° | 62° | 73° | — | — |
| 1978 | 89° | 57° | 73° | — | — |
| 1977 | 88° | 61° | 74° | — | — |
| 1976 | 78° | 42° | 60° | — | — |
| 1975 | 84° | 54° | 69° | — | — |
| 1974 | 86° | 60° | 73° | — | — |
| 1973 | 78° | 58° | 68° | 0.18" | — |
| 1972 | 75° | 50° | 63° | 0.08" | — |
| 1971 | 79° | 60° | 69° | — | — |
55 years of data from CHATTANOOGA AP