Weather on April 18
Chattanooga, TN
55 Years of Data
Avg High
75°F
Avg Low
49°F
Warmest
2002
75°F avg
Coldest
1983
41°F avg
About This Date
April 18th in Chattanooga, TN typically brings pleasant spring weather, with average highs around 75°F and lows near 49°F — a 26°F daily swing. Over 55 years of records, the warmest April 18th was in 2002 (75°F average), while the coldest was 1983 (41°F) — a 34°F range across recorded history. Rain or other precipitation has occurred on about 24% of April 18th dates historically, with the wettest April 18th recording 6.25" of rain. The last decade has been 5.1°F warmer on this date compared to 20-30 years ago.
The last decade has been 5.1°F warmer on this date compared to 20-30 years ago.
Planning for April 18th in Chattanooga, TN? Great weather for outdoor activities.
Warming Trend
0.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 84° | 49° | 66° | — | — |
| 2024 | 83° | 57° | 70° | — | — |
| 2023 | 81° | 42° | 61° | — | — |
| 2022 | 62° | 45° | 53° | — | — |
| 2021 | 71° | 46° | 59° | — | — |
| 2020 | 67° | 47° | 57° | 0.38" | — |
| 2019 | 80° | 57° | 69° | 1.22" | — |
| 2018 | 82° | 55° | 69° | — | — |
| 2017 | 77° | 63° | 70° | 3.1" | — |
| 2016 | 85° | 48° | 66° | — | — |
| 2015 | 78° | 58° | 68° | — | — |
| 2014 | 64° | 52° | 58° | — | — |
| 2013 | 82° | 58° | 70° | — | — |
| 2012 | 63° | 55° | 59° | 0.28" | — |
| 2011 | 79° | 46° | 62° | — | — |
| 2010 | 71° | 49° | 60° | — | — |
| 2009 | 76° | 43° | 59° | — | — |
| 2008 | 79° | 44° | 61° | 0.05" | — |
| 2007 | 76° | 49° | 62° | — | — |
| 2006 | 82° | 57° | 70° | — | — |
| 2005 | 81° | 47° | 64° | — | — |
| 2004 | 83° | 50° | 66° | — | — |
| 2003 | 79° | 53° | 66° | — | — |
| 2002warmest | 90° | 61° | 75° | — | — |
| 2001 | 62° | 36° | 49° | — | — |
| 2000 | 65° | 50° | 57° | — | — |
| 1999 | 58° | 36° | 47° | — | — |
| 1998 | 57° | 51° | 54° | 3.38" | — |
| 1997 | 63° | 35° | 49° | — | — |
| 1996 | 81° | 44° | 62° | 0.28" | — |
| 1995 | 85° | 56° | 70° | — | — |
| 1994 | 86° | 44° | 65° | — | — |
| 1993 | 72° | 45° | 58° | — | — |
| 1992 | 82° | 54° | 68° | — | — |
| 1991 | 80° | 52° | 66° | 1.19" | — |
| 1990 | 65° | 42° | 53° | — | — |
| 1989 | 83° | 46° | 64° | — | — |
| 1988 | 78° | 58° | 68° | 1.35" | — |
| 1987 | 74° | 43° | 58° | — | — |
| 1986 | 74° | 40° | 57° | — | — |
| 1985 | 83° | 51° | 67° | — | — |
| 1984 | 65° | 39° | 52° | — | — |
| 1983coldest | 48° | 33° | 41° | 0.18" | — |
| 1982 | 68° | 44° | 56° | — | — |
| 1981 | 83° | 56° | 69° | — | — |
| 1980 | 73° | 42° | 58° | — | — |
| 1979 | 74° | 44° | 59° | — | — |
| 1978 | 70° | 61° | 65° | 6.25" | — |
| 1977 | 86° | 53° | 70° | 1.5" | — |
| 1976 | 83° | 48° | 65° | — | — |
| 1975 | 82° | 56° | 69° | — | — |
| 1974 | 67° | 32° | 49° | — | — |
| 1973 | 74° | 58° | 66° | 1.02" | — |
| 1972 | 83° | 44° | 63° | — | — |
| 1971 | 85° | 50° | 67° | — | — |
55 years of data from CHATTANOOGA AP