CHARLESTON WSO CITY, SOUTH CAROLINA

NCDC 1971-2000 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F) 57.1 59.8 65.8 72.9 79.6 84.9 88.5 87.1 83.0 75.1 67.6 60.0 73.5
Highest Mean Max. Temperature (F) 68.5 67.4 71.8 77.3 85.0 92.3 92.6 90.5 87.3 79.0 73.0 66.4 92.6
Year Highest Occurred 1974 1976 1976 1977 1998 1998 1977 1975 1980 1984 1985 1971 1977
Lowest Mean Max. Temperature (F) 48.1 50.3 61.1 68.2 76.1 79.9 84.8 84.2 79.9 69.9 60.6 51.8 48.1
Year Lowest Occurred 1977 1978 1971 1993 1997 1997 1988 1981 1995 1987 1976 1989 1977
Mean Temperature (F) 49.8 52.4 58.7 65.9 73.5 79.4 82.8 81.6 77.6 68.5 60.5 52.8 67.0
Highest Mean Temperature (F) 61.7 58.9 65.0 69.2 78.5 85.6 86.0 84.3 81.3 72.7 68.0 59.7 86.0
Year Highest Occurred 1974 1990 1997 1977 1998 1998 1998 1999 1998 1985 1985 1971 1998
Lowest Mean Temperature (F) 40.4 43.3 53.7 61.5 70.5 75.0 80.3 79.0 74.1 63.2 53.3 44.5 40.4
Year Lowest Occurred 1977 1978 1971 1993 1997 1997 1974 1976 1984 1987 1976 1989 1977
Mean Min. Temperature (F) 42.4 44.9 51.5 58.8 67.4 73.8 77.0 76.1 72.2 61.9 53.4 45.5 60.4
Highest Mean Min. Temperature (F) 54.8 52.2 58.4 63.5 72.1 78.8 80.7 79.1 75.8 68.3 62.9 52.9 80.7
Year Highest Occurred 1974 1990 1997 1991 1991 1998 1986 1998 1998 1985 1985 1971 1986
Lowest Mean Min. Temperature (F) 32.6 36.4 46.2 54.5 64.5 69.7 74.6 73.3 68.2 56.6 45.9 37.2 32.6
Year Lowest Occurred 1977 1978 1971 1983 1992 1979 1984 1976 1984 1987 1976 2000 1977
Mean Precipitation (in.) 3.62 2.62 3.83 2.44 2.77 4.96 5.50 6.54 6.13 3.02 2.18 2.78 46.39
Highest Precipitation (in.) 6.44 7.26 9.79 6.33 11.93 19.24 12.81 16.37 14.96 11.20 5.60 5.53 19.24
Year Highest Occurred 1991 1998 1983 1997 1976 1973 1990 1971 1987 1994 1972 1976 1973
Lowest Precipitation (in.) 0.86 0.50 1.02 0.00 0.02 0.98 0.54 0.60 0.51 0.00 0.21 0.49 0.00
Year Lowest Occurred 1985 1994 1995 1972 2000 1978 1986 1980 1985 2000 1996 1984 1972
Heating Degree Days (F) 489. 362. 224. 57. 3. 0. 0. 0. 0. 47. 183. 390. 1755.
Cooling Degree Days (F) 3. 7. 27. 83. 266. 431. 551. 514. 377. 156. 47. 11. 2473.

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