JOHNSTON 4 SW, SOUTH CAROLINA

NCDC 1961-1990 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F) 52.3 56.5 65.4 73.9 81.0 87.2 90.2 88.9 83.6 74.7 66.0 56.2 73.0
Highest Mean Max. Temperature (F) 64.7 66.3 70.9 80.0 87.7 92.9 97.7 96.0 89.7 81.9 71.0 65.5 77.1
Year Highest Occurred 1974 1976 1974 1977 1962 1981 1986 1980 1980 1984 1985 1984 1990
Lowest Mean Max. Temperature (F) 42.6 49.3 59.3 67.6 76.0 82.0 85.7 84.8 79.5 68.4 58.2 48.1 71.1
Year Lowest Occurred 1977 1978 1969 1961 1976 1965 1964 1981 1979 1964 1976 1963 1969
Mean Temperature (F) 41.8 44.7 53.1 61.0 69.0 75.8 79.0 78.0 72.4 61.9 53.6 44.9 61.3
Highest Mean Temperature (F) 55.1 53.2 57.9 66.0 75.0 80.6 84.4 81.6 77.4 68.9 62.3 53.6 64.1
Year Highest Occurred 1974 1990 1976 1981 1962 1981 1986 1980 1980 1984 1985 1984 1990
Lowest Mean Temperature (F) 32.5 37.9 46.9 55.8 65.5 71.7 75.5 75.1 66.4 56.3 46.9 37.9 59.9
Year Lowest Occurred 1977 1978 1969 1961 1973 1979 1979 1969 1967 1987 1976 1989 1979
Mean Min. Temperature (F) 31.2 32.8 40.8 48.1 56.8 64.4 67.8 67.0 61.1 49.1 41.1 33.6 49.5
Highest Mean Min. Temperature (F) 45.5 40.3 46.4 52.5 62.2 68.3 71.1 70.2 65.1 57.2 53.5 43.3 52.3
Year Highest Occurred 1974 1990 1976 1981 1962 1981 1986 1987 1980 1985 1985 1971 1986
Lowest Mean Min. Temperature (F) 22.3 25.6 34.4 43.9 52.7 59.6 63.1 63.3 53.1 41.3 35.6 27.5 47.0
Year Lowest Occurred 1977 1980 1969 1961 1981 1979 1979 1979 1967 1987 1976 1989 1979
Mean Precipitation (in.) 4.93 4.37 4.87 4.13 3.71 4.75 4.68 4.68 3.49 3.00 2.93 3.71 49.25
Highest Precipitation (in.) 9.14 8.48 12.09 13.13 7.34 15.88 12.48 11.50 7.66 12.18 6.74 8.06 72.95
Year Highest Occurred 1974 1985 1980 1961 1979 1965 1975 1964 1988 1990 1976 1981 1964
Lowest Precipitation (in.) 1.11 1.18 0.76 0.55 1.02 0.56 0.16 1.70 0.15 0.11 0.76 0.68 37.82
Year Lowest Occurred 1981 1978 1985 1986 1977 1986 1980 1976 1985 1974 1981 1988 1986
Heating Degree Days (F) 719. 568. 376. 148. 28. 0. 0. 0. 0. 150. 349. 623. 2961.
Cooling Degree Days (F) 0. 0. 7. 28. 152. 324. 434. 403. 227. 54. 7. 0. 1636.

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