WEATHER IN Charleston
Climate tables. Data for Charleston.
Monthly temperature
| Month | Record low | Average low | Average | Average high | Record high |
| january | -14.4 (1985) | 3.8 | 9.7 | 15.7 | 28.3 (1950) |
| february | -11.1 (1973) | 5.3 | 11.5 | 17.7 | 30.6 (1989) |
| march | -9.4 (1980) | 8.5 | 14.8 | 21.2 | 32.2 (1974) |
| april | -1.7 (1944) | 12.5 | 18.8 | 25.1 | 35.0 (2002) |
| may | 2.2 (1963) | 17.2 | 22.9 | 28.7 | 37.2 (1938) |
| june | 10.0 (1972) | 21.3 | 26.3 | 31.4 | 39.4 (1944) |
| july | 12.2 (2010) | 23.2 | 28.1 | 32.9 | 40.0 (1986) |
| august | 13.3 (1979) | 22.8 | 27.4 | 32.1 | 40.6 (1999) |
| september | 5.6 (1967) | 20.2 | 24.9 | 29.7 | 37.2 (1944) |
| october | -2.8 (1976) | 14.3 | 19.9 | 25.5 | 34.4 (1986) |
| november | -9.4 (1950) | 8.4 | 14.6 | 20.8 | 31.1 (1961) |
| december | -13.3 (1962) | 5.3 | 11.2 | 17.1 | 28.3 (1972) |
| year | -14.4 (1985) | 13.1 | 18.8 | 24.5 | 40.6 (1999) |
Monthly precipitation
| Month | Average | Record low | Record high | Daily high |
| january | 86 | 5 (1898) | 227 (1993) | 99 (1993) |
| february | 78 | 8 (1947) | 266 (2013) | 129 (1940) |
| march | 85 | 1 (1842) | 308 (1843) | 114 (1959) |
| april | 84 | 0.3 (1972) | 381 (1877) | 104 (1958) |
| may | 84 | 3 (1911) | 243 (1922) | 158 (1967) |
| june | 158 | 4 (1850) | 692 (1973) | 239 (1973) |
| july | 168 | 11 (1844) | 469 (1964) | 137 (1981) |
| august | 177 | 10 (1900) | 487 (1885) | 200 (1940) |
| september | 153 | 5 (1990) | 440 (1945) | 267 (1998) |
| october | 110 | 0.0 (2000) | 364 (1876) | 167 (2008) |
| november | 68 | 0.8 (2007) | 212 (1865) | 133 (1969) |
| december | 85 | 0.8 (1889) | 281 (1941) | 102 (1941) |
| year | 1296 | 602 (1850) | 1992 (1876) | 267 (1998) |
Number of days with solid, liquid, and mixed precipitation
| Type of precipitation | jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |
Wind speed, m/s
| jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |
The frequency of different wind directions, %
| direction | jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |
Air humidity, %
| jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |
Snow cover
| Month | jul | aug | sep | oct | nov | dec | jan | feb | mar | apr | may | jun | Year |
| number of days | |||||||||||||
| height (sm) | |||||||||||||
| max height (sm) |
Cloudy, score
| month | jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |
| total | |||||||||||||
| low |
Number of clear, cloudy and cloudy days
| month | jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |
| Total cloud | |||||||||||||
| Low cloud | |||||||||||||
Number of days with different phenomena
| phenomenon | jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |
The frequency of different types of clouds, %
| type of clouds | jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |