Weather on May 15
Chattanooga, TN
55 Years of Data
Avg High
78°F
Avg Low
58°F
Warmest
2018
78°F avg
Coldest
1981
54°F avg
About This Date
May 15th in Chattanooga, TN typically brings pleasant spring weather, with average highs around 78°F and lows near 58°F. Over 55 years of records, the warmest May 15th was in 2018 (78°F average), while the coldest was 1981 (54°F) — a 24°F range across recorded history. Rain or other precipitation has occurred on about 38% of May 15th dates historically, with the wettest May 15th recording 2.08" of rain. The last decade has been 2.0°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.0°F warmer on this date compared to 20-30 years ago.
Planning for May 15th in Chattanooga, TN? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Warming Trend
1.0°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 84° | 64° | 74° | — | — |
| 2024 | 80° | 61° | 70° | 0.08" | — |
| 2023 | 86° | 67° | 76° | 0.18" | — |
| 2022 | 87° | 66° | 77° | 0.15" | — |
| 2021 | 78° | 50° | 64° | — | — |
| 2020 | 82° | 64° | 73° | — | — |
| 2019 | 70° | 50° | 60° | — | — |
| 2018warmest | 88° | 69° | 78° | 0.66" | — |
| 2017 | 88° | 57° | 72° | — | — |
| 2016 | 70° | 44° | 57° | — | — |
| 2015 | 80° | 68° | 74° | 0.05" | — |
| 2014 | 67° | 50° | 58° | 0.36" | — |
| 2013 | 88° | 57° | 72° | — | — |
| 2012 | 79° | 58° | 68° | — | — |
| 2011 | 61° | 56° | 58° | — | — |
| 2010 | 86° | 64° | 75° | 0.18" | — |
| 2009 | 86° | 65° | 75° | 2.08" | — |
| 2008 | 68° | 62° | 65° | 1.12" | — |
| 2007 | 85° | 59° | 72° | — | — |
| 2006 | 62° | 46° | 54° | — | — |
| 2005 | 77° | 58° | 67° | 0.38" | — |
| 2004 | 78° | 61° | 69° | — | — |
| 2003 | 78° | 62° | 70° | 0.13" | — |
| 2002 | 79° | 46° | 62° | — | — |
| 2001 | 88° | 56° | 72° | — | — |
| 2000 | 77° | 58° | 67° | — | — |
| 1999 | 79° | 59° | 69° | — | — |
| 1998 | 89° | 64° | 77° | — | — |
| 1997 | 73° | 55° | 64° | — | — |
| 1996 | 72° | 57° | 64° | 1.83" | — |
| 1995 | 85° | 64° | 74° | — | — |
| 1994 | 83° | 64° | 73° | 1.4" | — |
| 1993 | 82° | 50° | 66° | — | — |
| 1992 | 83° | 58° | 70° | — | — |
| 1991 | 90° | 64° | 77° | — | — |
| 1990 | 87° | 58° | 72° | 0.76" | — |
| 1989 | 77° | 53° | 65° | 0.03" | — |
| 1988 | 88° | 57° | 72° | — | — |
| 1987 | 85° | 62° | 73° | — | — |
| 1986 | 83° | 68° | 75° | — | — |
| 1985 | 83° | 63° | 73° | — | — |
| 1984 | 72° | 48° | 60° | — | — |
| 1983 | 70° | 63° | 66° | 1.96" | — |
| 1982 | 86° | 57° | 72° | — | — |
| 1981coldest | 61° | 48° | 54° | — | — |
| 1980 | 80° | 56° | 68° | — | — |
| 1979 | 82° | 50° | 66° | — | — |
| 1978 | 58° | 52° | 55° | 0.03" | — |
| 1977 | 86° | 56° | 71° | — | — |
| 1976 | 80° | 59° | 70° | 0.97" | — |
| 1975 | 72° | 62° | 67° | 1.96" | — |
| 1974 | 69° | 57° | 63° | 1.85" | — |
| 1973 | 70° | 47° | 58° | — | — |
| 1972 | 75° | 56° | 65° | — | — |
| 1971 | 64° | 55° | 60° | 0.08" | — |
55 years of data from CHATTANOOGA AP