JOHNSTON 4 SW, SOUTH CAROLINA

NCDC 1971-2000 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F) 53.8 58.3 66.2 74.5 82.1 88.5 91.8 89.7 84.4 75.1 66.1 56.6 73.9
Highest Mean Max. Temperature (F) 64.7 66.3 74.6 80.0 89.9 94.4 100.3 96.6 89.7 81.9 71.0 65.5 100.3
Year Highest Occurred 1974 1976 1997 1977 2000 2000 1993 1999 1980 1984 1985 1984 1993
Lowest Mean Max. Temperature (F) 42.6 49.3 59.8 68.1 76.0 83.3 86.6 84.8 79.5 69.3 58.2 47.5 42.6
Year Lowest Occurred 1977 1978 1971 1983 1976 1976 1971 1981 1979 1976 1976 2000 1977
Mean Temperature (F) 41.3 44.3 51.8 59.4 67.9 75.1 78.9 77.3 72.0 61.5 52.8 44.0 60.5
Highest Mean Temperature (F) 53.2 52.2 59.5 64.5 73.9 79.7 84.8 82.2 76.7 67.7 60.9 51.7 84.8
Year Highest Occurred 1974 1990 1997 1999 2000 1998 1993 1999 1980 1984 1985 1971 1993
Lowest Mean Temperature (F) 30.6 35.8 44.8 54.7 64.0 70.4 75.6 74.1 69.3 55.1 46.0 36.0 30.6
Year Lowest Occurred 1977 1978 1971 1983 1971 1979 1971 1981 1974 1987 1976 1989 1977
Mean Min. Temperature (F) 28.8 30.3 37.3 44.3 53.6 61.7 66.0 64.8 59.6 47.8 39.4 31.4 47.1
Highest Mean Min. Temperature (F) 41.8 38.4 44.3 50.3 59.4 65.0 69.4 68.3 63.7 54.9 50.7 40.0 69.4
Year Highest Occurred 1974 1990 1997 1999 1991 1998 1993 1995 1980 1971 1985 1971 1993
Lowest Mean Min. Temperature (F) 18.6 21.6 29.9 40.1 48.6 56.9 62.9 61.3 55.1 38.9 33.2 23.7 18.6
Year Lowest Occurred 1977 1980 1971 1987 1981 1979 1978 1977 1984 1987 1984 1989 1977
Mean Precipitation (in.) 5.12 4.22 4.88 3.38 3.45 4.54 4.29 4.97 3.96 3.16 3.17 3.51 48.65
Highest Precipitation (in.) 9.14 8.48 12.09 8.09 7.34 13.93 12.48 10.03 10.23 12.18 6.74 8.06 13.93
Year Highest Occurred 1974 1985 1980 1998 1979 1973 1975 1992 2000 1990 1976 1981 1973
Lowest Precipitation (in.) 1.11 1.18 0.76 0.55 0.48 0.20 0.16 1.70 0.15 0.09 0.76 0.68 0.09
Year Lowest Occurred 1981 1978 1985 1986 2000 1993 1980 1976 1985 2000 1981 1988 2000
Heating Degree Days (F) 736. 580. 417. 192. 57. 3. 0. 0. 7. 163. 375. 650. 3180.
Cooling Degree Days (F) 0. 0. 6. 24. 145. 305. 431. 380. 217. 52. 7. 0. 1567.

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