Weather on March 18
Chattanooga, TN
55 Years of Data
Avg High
64°F
Avg Low
43°F
Warmest
2012
72°F avg
Coldest
1978
40°F avg
About This Date
March 18th in Chattanooga, TN typically brings mild spring weather, with average highs around 64°F and lows near 43°F. Over 56 years of records, the warmest March 18th was in 2012 (72°F average), while the coldest was 1978 (40°F) — a 32°F range across recorded history. Rain or other precipitation has occurred on about 43% of March 18th dates historically, with the wettest March 18th recording 4.88" of rain. The last decade has been 1.4°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.4°F cooler on this date compared to 20-30 years ago.
Planning for March 18th in Chattanooga, TN? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Warming Trend
0.9°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 52° | 32° | 42° | — | — |
| 2025 | 75° | 36° | 55° | — | — |
| 2024 | 54° | 36° | 45° | — | — |
| 2023 | 53° | 34° | 43° | — | — |
| 2022 | 61° | 49° | 55° | 1.09" | — |
| 2021 | 70° | 47° | 58° | 1.12" | — |
| 2020 | 69° | 57° | 63° | 0.08" | — |
| 2019 | 58° | 40° | 49° | — | — |
| 2018 | 69° | 48° | 59° | — | — |
| 2017 | 70° | 49° | 59° | 0.25" | — |
| 2016 | 74° | 45° | 59° | — | — |
| 2015 | 62° | 49° | 55° | — | — |
| 2014 | 54° | 43° | 48° | — | — |
| 2013 | 63° | 50° | 56° | 1.91" | — |
| 2012warmest | 84° | 59° | 72° | — | — |
| 2011 | 82° | 47° | 64° | — | — |
| 2010 | 67° | 44° | 55° | — | — |
| 2009 | 71° | 42° | 57° | — | — |
| 2008 | 69° | 52° | 60° | — | — |
| 2007 | 56° | 32° | 44° | — | — |
| 2006 | 61° | 40° | 50° | — | — |
| 2005 | 57° | 33° | 45° | — | — |
| 2004 | 66° | 43° | 54° | 0.08" | — |
| 2003 | 64° | 57° | 61° | 0.23" | — |
| 2002 | 75° | 60° | 68° | 0.91" | — |
| 2001 | 57° | 39° | 48° | — | — |
| 2000 | 60° | 38° | 49° | 0.08" | — |
| 1999 | 74° | 41° | 57° | — | — |
| 1998 | 51° | 46° | 49° | 4.88" | — |
| 1997 | 73° | 51° | 62° | 0.23" | — |
| 1996 | 67° | 43° | 55° | 1.19" | — |
| 1995 | 76° | 46° | 61° | — | — |
| 1994 | 74° | 39° | 56° | — | — |
| 1993 | 51° | 34° | 42° | — | — |
| 1992 | 59° | 51° | 55° | 4.14" | — |
| 1991 | 62° | 45° | 53° | 0.28" | — |
| 1990 | 69° | 40° | 54° | — | — |
| 1989 | 71° | 43° | 57° | 1.12" | — |
| 1988 | 47° | 38° | 42° | 0.13" | — |
| 1987 | 54° | 47° | 50° | 4.47" | — |
| 1986 | 78° | 44° | 61° | — | — |
| 1985 | 53° | 31° | 42° | — | — |
| 1984 | 74° | 53° | 63° | 0.1" | — |
| 1983 | 57° | 49° | 53° | 0.38" | — |
| 1982 | 83° | 55° | 69° | — | — |
| 1981 | 56° | 34° | 45° | 0.46" | — |
| 1980 | 54° | 36° | 45° | 0.03" | — |
| 1979 | 72° | 38° | 55° | — | — |
| 1978coldest | 55° | 25° | 40° | — | — |
| 1977 | 77° | 56° | 66° | — | — |
| 1976 | 68° | 30° | 49° | — | — |
| 1975 | 53° | 44° | 49° | 1.6" | — |
| 1974 | 59° | 33° | 46° | — | — |
| 1973 | 58° | 33° | 45° | — | — |
| 1972 | 52° | 39° | 45° | 0.15" | — |
| 1971 | 64° | 25° | 44° | 0.13" | — |
56 years of data from CHATTANOOGA AP