Weather on October 21
Charleston, SC
55 Years of Data
Avg High
74°F
Avg Low
60°F
Warmest
1984
77°F avg
Coldest
1974
51°F avg
About This Date
October 21st in Charleston, SC typically brings pleasant fall weather, with average highs around 74°F and lows near 60°F. Over 55 years of records, the warmest October 21st was in 1984 (77°F average), while the coldest was 1974 (51°F) — a 26°F range across recorded history. Rain or other precipitation has occurred on about 11% of October 21st dates historically, with the wettest October 21st recording 1.96" of rain. The last decade has been 1.0°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.0°F cooler on this date compared to 20-30 years ago.
Planning for October 21st in Charleston, SC? Great weather for outdoor activities.
Warming Trend
0.9°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 73° | 58° | 65° | — | — |
| 2024 | 75° | 57° | 66° | — | — |
| 2023 | 73° | 56° | 64° | — | — |
| 2022 | 69° | 54° | 61° | — | — |
| 2021 | 81° | 66° | 73° | — | — |
| 2020 | 79° | 72° | 75° | — | — |
| 2019 | 74° | 65° | 69° | — | — |
| 2018 | 68° | 59° | 64° | — | — |
| 2017 | 78° | 64° | 71° | — | — |
| 2016 | 83° | 63° | 73° | — | — |
| 2015 | 79° | 60° | 69° | — | — |
| 2014 | 79° | 66° | 72° | 0.08" | — |
| 2013 | 70° | 64° | 67° | — | — |
| 2012 | 73° | 58° | 65° | — | — |
| 2011 | 69° | 51° | 60° | — | — |
| 2010 | 78° | 62° | 70° | — | — |
| 2009 | 70° | 56° | 63° | — | — |
| 2008 | 73° | 53° | 63° | — | — |
| 2007 | 79° | 68° | 73° | — | — |
| 2006 | 74° | 58° | 66° | — | — |
| 2005 | 80° | 70° | 75° | — | — |
| 2004 | 71° | 64° | 68° | — | — |
| 2003 | 81° | 62° | 71° | — | — |
| 2002 | 78° | 68° | 73° | 0.46" | — |
| 2001 | 78° | 68° | 73° | — | — |
| 2000 | 76° | 64° | 70° | — | — |
| 1999 | 75° | 65° | 70° | 1.96" | — |
| 1998 | 69° | 61° | 65° | — | — |
| 1997 | 72° | 57° | 64° | — | — |
| 1996 | 70° | 54° | 62° | — | — |
| 1995 | 69° | 55° | 62° | — | — |
| 1994 | 73° | 63° | 68° | — | — |
| 1993 | 82° | 71° | 77° | — | — |
| 1992 | 75° | 57° | 66° | — | — |
| 1991 | 70° | 59° | 64° | — | — |
| 1990 | 77° | 66° | 72° | — | — |
| 1989 | 65° | 44° | 54° | — | — |
| 1988 | 75° | 57° | 66° | 0.76" | — |
| 1987 | 77° | 56° | 66° | — | — |
| 1986 | 71° | 50° | 61° | — | — |
| 1985 | 78° | 70° | 74° | 0.2" | — |
| 1984warmest | 81° | 73° | 77° | — | — |
| 1983 | 66° | 58° | 62° | — | — |
| 1982 | 81° | 63° | 72° | — | — |
| 1981 | 71° | 56° | 63° | — | — |
| 1980 | 73° | 62° | 68° | — | — |
| 1979 | 80° | 68° | 74° | — | — |
| 1978 | 74° | 56° | 65° | — | — |
| 1977 | 69° | 52° | 60° | — | — |
| 1976 | 64° | 45° | 54° | — | — |
| 1975 | 73° | 54° | 63° | — | — |
| 1974coldest | 59° | 43° | 51° | — | — |
| 1973 | 76° | 60° | 68° | — | — |
| 1972 | 65° | 44° | 54° | — | — |
| 1971 | 74° | 69° | 71° | 0.58" | — |
55 years of data from DWTN CHARLESTON