CHARLESTON WSO CITY, SOUTH CAROLINA

NCDC 1961-1990 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F) 55.9 58.8 65.4 73.0 79.6 85.1 88.1 87.0 82.8 75.0 67.2 59.7 73.1
Highest Mean Max. Temperature (F) 68.5 67.4 71.8 77.3 84.3 90.7 92.6 90.5 87.3 79.0 73.0 66.4 75.2
Year Highest Occurred 1974 1976 1976 1977 1962 1981 1977 1975 1980 1984 1985 1971 1990
Lowest Mean Max. Temperature (F) 48.1 50.3 60.9 68.7 76.2 81.3 84.2 83.6 79.0 69.9 60.6 51.8 71.1
Year Lowest Occurred 1977 1978 1969 1961 1961 1967 1964 1969 1967 1987 1976 1989 1988
Mean Temperature (F) 48.4 51.0 57.9 65.4 72.8 78.8 81.8 81.0 76.8 67.9 59.7 52.2 66.1
Highest Mean Temperature (F) 61.6 58.9 64.1 68.7 76.4 83.4 84.9 83.2 80.7 72.2 67.6 59.5 69.1
Year Highest Occurred 1974 1990 1976 1977 1962 1981 1977 1975 1980 1985 1985 1971 1990
Lowest Mean Temperature (F) 40.3 43.2 53.1 61.0 70.1 75.4 78.6 78.5 72.2 62.7 52.9 44.4 64.7
Year Lowest Occurred 1977 1978 1969 1961 1961 1979 1964 1976 1967 1987 1976 1989 1988
Mean Min. Temperature (F) 40.8 43.2 50.3 57.8 66.0 72.4 75.4 74.9 70.7 60.7 52.1 44.6 59.1
Highest Mean Min. Temperature (F) 54.7 52.2 56.3 61.4 69.1 76.0 79.5 76.9 74.0 67.2 62.2 52.6 63.1
Year Highest Occurred 1974 1990 1976 1967 1975 1981 1986 1990 1980 1985 1985 1971 1990
Lowest Mean Min. Temperature (F) 32.5 36.1 45.3 53.2 63.4 68.4 73.0 72.2 65.4 55.5 45.2 36.9 57.4
Year Lowest Occurred 1977 1978 1969 1961 1981 1979 1964 1976 1967 1987 1976 1989 1983
Mean Precipitation (in.) 3.36 3.06 4.30 2.44 3.53 5.83 6.05 7.31 4.67 2.78 2.29 2.90 48.52
Highest Precipitation (in.) 6.99 6.62 9.79 5.88 11.93 19.24 23.75 16.37 14.96 9.73 6.98 5.53 73.41
Year Highest Occurred 1964 1964 1983 1982 1976 1973 1964 1971 1987 1965 1969 1976 1964
Lowest Precipitation (in.) 0.86 0.52 0.60 0.00 0.78 0.98 0.54 0.60 0.51 0.26 0.22 0.49 38.29
Year Lowest Occurred 1985 1988 1968 1972 1982 1978 1986 1980 1985 1979 1982 1984 1988
Heating Degree Days (F) 525. 399. 238. 57. 0. 0. 0. 0. 0. 46. 194. 407. 1866.
Cooling Degree Days (F) 11. 7. 18. 69. 242. 414. 521. 496. 354. 136. 35. 10. 2313.

Southeast Regional Climate Center, sercc@climate.ncsu.edu