| Month | Average (°F) | Record (°F) | Average (inches) | |||
|---|---|---|---|---|---|---|
| High ☀️ | Low 🌙 | High ☀️ | Low 🌙 | Precipitation 💧 | Snow ❄️ | |
| January | 60.3 | 39.0 | 83 | 6 | 3.4 | 0.2 |
| February | 63.8 | 41.8 | 87 | 7 | 3.0 | 0.1 |
| March | 70.2 | 47.5 | 94 | 15 | 3.3 | 0.0 |
| April | 77.2 | 54.7 | 95 | 29 | 3.3 | 0.0 |
| May | 83.7 | 63.2 | 101 | 36 | 3.3 | 0.0 |
| June | 88.6 | 70.5 | 103 | 49 | 6.2 | 0.0 |
| July | 91.3 | 73.9 | 104 | 58 | 6.6 | 0.0 |
| August | 89.8 | 73.2 | 105 | 56 | 7.0 | 0.0 |
| September | 85.5 | 68.5 | 100 | 42 | 6.0 | 0.0 |
| October | 77.9 | 57.8 | 95 | 27 | 4.3 | 0.0 |
| November | 69.3 | 47.3 | 88 | 15 | 2.7 | 0.0 |
| December | 62.8 | 41.8 | 83 | 8 | 3.3 | 0.0 |
| Entire year | 76.8 | 56.7 | 105 | 6 | 52.5 | 0.4 |
|
More Charleston Weather Records
1893–2024
|
||
|---|---|---|
| Highest daily low | 83 °F | August 4, 2011 |
| Lowest daily high | 20 °F | December 23, 1989 |
| Greatest daily range (Difference of high and low) |
46 °F | December 3, 1947 |
| Greatest difference in daily high over two conscutive days |
36 °F | Apr 16–17, 1904 |
| Most daily precipitation | 11.5 inches | October 3, 2015 |
| Most monthly precipitation | 27.2 inches | June 1973 |
| Most yearly precipitation | 74.9 inches | 2015 |
| Most yearly days with precipitation | 142 | 1922 |
| Earliest snow in season | December 11 | 1958 |
| Latest snow in season | March 11 | 1960 |
| Most daily snow | 6.0 inches | December 23, 1989 |
| Most monthly snow | 8.0 inches | December 1989 |
| Most yearly snow | 8.9 inches | 1989 |
| Most snow in a winter | 8.0 inches | 1989–1990 |
| Greatest snow accumulation | 8.0 inches | December 24, 1989 |
| Earliest freeze | October 29 | 1976 |
| Earliest day ≥ 90 °F | March 10 | 1974 |
| Earliest day ≥ 100 °F | May 26 | 2019 |
| Latest freeze | April 20 | 1983 |
| Latest day ≥ 90 °F | October 19 | 1926 |
| Latest day ≥ 100 °F | September 2 | 1912 |
| Most days in a year < 32 °F | 63 | 1968 |
| Most days in a year ≥ 80 °F | 199 | 2017 |
| Most days in a year ≥ 90 °F | 98 | 2016 |
| Most days in a year ≥ 100 °F | 11 | 1986 |
|
Charleston Weather Streaks
Most consecutive days...
|
||
|---|---|---|
| With precipitation | 13 days | Jun 24 – Jul 6, 2013 |
| Without precipitation | 41 days | Sep 24 – Nov 3, 2000 |
| With snow | 3 days | Dec 22–24, 1989 |
| High temperature at or below freezing |
3 days | Dec 30, 1917 – Jan 1, 1918 |
| High temperature ≥ 80 °F | 126 days | Jun 13 – Oct 16, 1973 |
| High temperature ≥ 90 °F | 42 days | Jun 27 – Aug 7, 1993 |
| High temperature ≥ 100 °F | 7 days | Jul 8–14, 1986 |