Weather on March 21
Chattanooga, TN
55 Years of Data
Avg High
65°F
Avg Low
41°F
Warmest
2011
70°F avg
Coldest
1986
33°F avg
About This Date
March 21st in Chattanooga, TN typically brings mild spring weather, with average highs around 65°F and lows near 41°F. Over 56 years of records, the warmest March 21st was in 2011 (70°F average), while the coldest was 1986 (33°F) — a 37°F range across recorded history. Rain or other precipitation has occurred on about 30% of March 21st dates historically, with the wettest March 21st recording 2.79" of rain. The last decade has been 3.4°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.4°F warmer on this date compared to 20-30 years ago.
Planning for March 21st in Chattanooga, TN? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Warming Trend
0.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 87° | 54° | 70° | — | — |
| 2025 | 62° | 31° | 47° | — | — |
| 2024 | 74° | 42° | 58° | — | — |
| 2023 | 62° | 30° | 46° | — | — |
| 2022 | 73° | 38° | 55° | — | — |
| 2021 | 68° | 38° | 53° | — | — |
| 2020 | 63° | 47° | 55° | — | — |
| 2019 | 63° | 43° | 53° | — | — |
| 2018 | 50° | 37° | 44° | — | — |
| 2017 | 84° | 54° | 69° | 1.04" | — |
| 2016 | 57° | 36° | 46° | — | — |
| 2015 | 69° | 50° | 60° | — | — |
| 2014 | 68° | 33° | 51° | — | — |
| 2013 | 47° | 26° | 36° | — | — |
| 2012 | 78° | 57° | 68° | — | — |
| 2011warmest | 80° | 59° | 70° | — | — |
| 2010 | 60° | 40° | 50° | 1.24" | — |
| 2009 | 64° | 33° | 49° | — | — |
| 2008 | 70° | 36° | 53° | — | — |
| 2007 | 79° | 53° | 66° | — | — |
| 2006 | 60° | 39° | 50° | 0.13" | — |
| 2005 | 67° | 47° | 57° | — | — |
| 2004 | 64° | 38° | 51° | — | — |
| 2003 | 67° | 51° | 59° | — | — |
| 2002 | 67° | 38° | 52° | — | — |
| 2001 | 53° | 41° | 47° | 0.18" | — |
| 2000 | 70° | 37° | 53° | — | — |
| 1999 | 64° | 47° | 55° | 0.91" | — |
| 1998 | 41° | 37° | 39° | — | — |
| 1997 | 76° | 41° | 58° | — | — |
| 1996 | 45° | 30° | 37° | — | — |
| 1995 | 73° | 43° | 58° | — | — |
| 1994 | 67° | 49° | 58° | 0.76" | — |
| 1993 | 64° | 45° | 54° | — | — |
| 1992 | 59° | 29° | 44° | — | — |
| 1991 | 72° | 51° | 61° | — | — |
| 1990 | 66° | 27° | 46° | — | — |
| 1989 | 54° | 41° | 47° | 0.3" | — |
| 1988 | 78° | 52° | 65° | — | — |
| 1987 | 73° | 35° | 54° | — | — |
| 1986coldest | 43° | 24° | 33° | — | — |
| 1985 | 56° | 48° | 52° | 2.06" | — |
| 1984 | 46° | 35° | 41° | — | — |
| 1983 | 52° | 35° | 43° | — | — |
| 1982 | 68° | 51° | 60° | 1.04" | — |
| 1981 | 58° | 32° | 45° | 0.13" | — |
| 1980 | 60° | 42° | 51° | 0.1" | — |
| 1979 | 73° | 56° | 64° | 0.05" | — |
| 1978 | 71° | 48° | 60° | 0.48" | — |
| 1977 | 58° | 47° | 52° | 0.28" | — |
| 1976 | 67° | 50° | 58° | 1.47" | — |
| 1975 | 77° | 36° | 56° | — | — |
| 1974 | 62° | 33° | 48° | 2.79" | — |
| 1973 | 53° | 37° | 45° | — | — |
| 1972 | 70° | 50° | 60° | 0.69" | — |
| 1971 | 60° | 25° | 42° | — | — |
56 years of data from CHATTANOOGA AP