Weather on May 18
Chattanooga, TN
55 Years of Data
Avg High
81°F
Avg Low
58°F
Warmest
2017
80°F avg
Coldest
2011
54°F avg
About This Date
May 18th in Chattanooga, TN typically brings warm spring weather, with average highs around 81°F and lows near 58°F. Over 55 years of records, the warmest May 18th was in 2017 (80°F average), while the coldest was 2011 (54°F) — a 26°F range across recorded history. Rain or other precipitation has occurred on about 33% of May 18th dates historically, with the wettest May 18th recording 3.3" of rain. The last decade has been 2.8°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.8°F warmer on this date compared to 20-30 years ago.
Planning for May 18th in Chattanooga, TN? Stay hydrated and seek shade during peak afternoon hours. Consider bringing rain gear or an umbrella.
Warming Trend
0.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 84° | 65° | 74° | — | — |
| 2024 | 81° | 68° | 74° | — | — |
| 2023 | 78° | 63° | 70° | — | — |
| 2022 | 88° | 57° | 72° | — | — |
| 2021 | 78° | 66° | 72° | — | — |
| 2020 | 82° | 63° | 72° | 3.18" | — |
| 2019 | 89° | 64° | 77° | — | — |
| 2018 | 83° | 67° | 75° | 0.18" | — |
| 2017warmest | 90° | 70° | 80° | 0.1" | — |
| 2016 | 82° | 62° | 72° | — | — |
| 2015 | 86° | 66° | 76° | 0.2" | — |
| 2014 | 65° | 53° | 59° | 1.14" | — |
| 2013 | 77° | 65° | 71° | 1.04" | — |
| 2012 | 86° | 60° | 73° | — | — |
| 2011coldest | 64° | 44° | 54° | — | — |
| 2010 | 79° | 61° | 70° | — | — |
| 2009 | 70° | 49° | 59° | — | — |
| 2008 | 70° | 58° | 64° | 0.43" | — |
| 2007 | 73° | 53° | 63° | — | — |
| 2006 | 77° | 51° | 64° | — | — |
| 2005 | 83° | 52° | 67° | — | — |
| 2004 | 82° | 63° | 72° | 2.54" | — |
| 2003 | 74° | 64° | 69° | 3.3" | — |
| 2002 | 69° | 51° | 60° | 0.28" | — |
| 2001 | 90° | 60° | 75° | — | — |
| 2000 | 91° | 67° | 79° | — | — |
| 1999 | 81° | 61° | 71° | 2.51" | — |
| 1998 | 88° | 56° | 72° | — | — |
| 1997 | 87° | 53° | 70° | — | — |
| 1996 | 90° | 61° | 75° | — | — |
| 1995 | 83° | 67° | 75° | 1.22" | — |
| 1994 | 77° | 54° | 65° | — | — |
| 1993 | 88° | 64° | 76° | — | — |
| 1992 | 87° | 60° | 74° | — | — |
| 1991 | 90° | 66° | 78° | — | — |
| 1990 | 82° | 52° | 67° | — | — |
| 1989 | 84° | 60° | 72° | — | — |
| 1988 | 80° | 51° | 66° | — | — |
| 1987 | 84° | 62° | 73° | 0.03" | — |
| 1986 | 75° | 63° | 69° | 2.9" | — |
| 1985 | 73° | 52° | 62° | — | — |
| 1984 | 82° | 44° | 63° | — | — |
| 1983 | 72° | 49° | 60° | 0.1" | — |
| 1982 | 82° | 60° | 71° | — | — |
| 1981 | 84° | 57° | 71° | 0.25" | — |
| 1980 | 83° | 61° | 72° | — | — |
| 1979 | 81° | 50° | 65° | — | — |
| 1978 | 82° | 55° | 69° | — | — |
| 1977 | 88° | 60° | 74° | 0.76" | — |
| 1976 | 64° | 49° | 56° | 0.28" | — |
| 1975 | 80° | 58° | 69° | — | — |
| 1974 | 86° | 60° | 73° | — | — |
| 1973 | 72° | 39° | 55° | — | — |
| 1972 | 80° | 55° | 68° | — | — |
| 1971 | 86° | 55° | 71° | — | — |
55 years of data from CHATTANOOGA AP