Weather on April 21
Chattanooga, TN
55 Years of Data
Avg High
75°F
Avg Low
51°F
Warmest
2002
78°F avg
Coldest
1983
47°F avg
About This Date
April 21st in Chattanooga, TN typically brings pleasant spring weather, with average highs around 75°F and lows near 51°F. Over 55 years of records, the warmest April 21st was in 2002 (78°F average), while the coldest was 1983 (47°F) — a 31°F range across recorded history. Rain or other precipitation has occurred on about 31% of April 21st dates historically, with the wettest April 21st recording 2.9" of rain. The last decade has been 1.5°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.5°F cooler on this date compared to 20-30 years ago.
Planning for April 21st in Chattanooga, TN? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 78° | 60° | 69° | 0.43" | — |
| 2024 | 63° | 49° | 56° | — | — |
| 2023 | 79° | 53° | 66° | 1.02" | — |
| 2022 | 78° | 59° | 69° | 0.03" | — |
| 2021 | 58° | 39° | 48° | — | — |
| 2020 | 76° | 54° | 65° | — | — |
| 2019 | 75° | 41° | 58° | — | — |
| 2018 | 75° | 40° | 57° | — | — |
| 2017 | 81° | 63° | 72° | 1.63" | — |
| 2016 | 79° | 59° | 69° | — | — |
| 2015 | 70° | 45° | 57° | — | — |
| 2014 | 81° | 48° | 64° | — | — |
| 2013 | 70° | 43° | 56° | — | — |
| 2012 | 75° | 55° | 65° | — | — |
| 2011 | 73° | 59° | 66° | 1.3" | — |
| 2010 | 73° | 50° | 62° | — | — |
| 2009 | 68° | 47° | 57° | — | — |
| 2008 | 78° | 47° | 62° | — | — |
| 2007 | 79° | 45° | 62° | — | — |
| 2006 | 78° | 61° | 69° | 1.3" | — |
| 2005 | 74° | 51° | 62° | — | — |
| 2004 | 78° | 54° | 66° | — | — |
| 2003 | 76° | 61° | 68° | 2.46" | — |
| 2002warmest | 88° | 69° | 78° | — | — |
| 2001 | 80° | 53° | 67° | — | — |
| 2000 | 63° | 49° | 56° | — | — |
| 1999 | 84° | 49° | 66° | — | — |
| 1998 | 68° | 43° | 55° | — | — |
| 1997 | 78° | 47° | 62° | 1.07" | — |
| 1996 | 72° | 57° | 64° | 1.12" | — |
| 1995 | 81° | 59° | 70° | 2.9" | — |
| 1994 | 88° | 50° | 69° | — | — |
| 1993 | 61° | 44° | 52° | — | — |
| 1992 | 75° | 51° | 63° | 0.84" | — |
| 1991 | 59° | 45° | 52° | — | — |
| 1990 | 70° | 59° | 64° | 1.45" | — |
| 1989 | 79° | 50° | 64° | — | — |
| 1988 | 83° | 45° | 64° | — | — |
| 1987 | 88° | 52° | 70° | — | — |
| 1986 | 62° | 48° | 55° | 0.3" | — |
| 1985 | 86° | 53° | 70° | — | — |
| 1984 | 70° | 51° | 60° | — | — |
| 1983coldest | 67° | 28° | 47° | — | — |
| 1982 | 65° | 48° | 56° | 0.66" | — |
| 1981 | 73° | 52° | 62° | — | — |
| 1980 | 81° | 45° | 63° | — | — |
| 1979 | 83° | 49° | 66° | — | — |
| 1978 | 60° | 38° | 49° | — | — |
| 1977 | 75° | 65° | 70° | — | — |
| 1976 | 81° | 60° | 70° | 0.33" | — |
| 1975 | 70° | 34° | 52° | — | — |
| 1974 | 76° | 53° | 64° | — | — |
| 1973 | 82° | 54° | 68° | — | — |
| 1972 | 77° | 53° | 65° | 0.69" | — |
| 1971 | 80° | 61° | 70° | 0.1" | — |
55 years of data from CHATTANOOGA AP