PORT GIBSON 1 NW, MISSISSIPPI

NCDC 1961-1990 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F) 55.8 60.4 69.0 77.1 83.4 89.3 91.4 91.3 86.7 77.9 68.3 59.6 75.9
Highest Mean Max. Temperature (F) 65.6 71.9 75.6 82.6 87.9 93.3 95.0 94.8 92.9 85.3 73.6 69.2 77.7
Year Highest Occurred 1972 1962 1963 1981 1962 1977 1962 1962 1980 1963 1973 1984 1990
Lowest Mean Max. Temperature (F) 45.6 50.8 61.5 70.9 78.3 83.7 87.0 88.2 81.4 72.5 60.2 50.2 73.7
Year Lowest Occurred 1977 1978 1969 1983 1976 1961 1989 1971 1974 1976 1976 1989 1983
Mean Temperature (F) 43.7 47.7 56.1 64.2 71.2 77.6 80.3 79.8 74.9 63.7 55.1 47.2 63.5
Highest Mean Temperature (F) 51.5 57.7 61.8 70.0 74.6 80.3 83.3 82.5 79.5 68.9 61.2 56.0 65.4
Year Highest Occurred 1974 1962 1985 1981 1974 1977 1980 1962 1972 1973 1985 1971 1986
Lowest Mean Temperature (F) 35.1 39.7 48.8 59.4 66.6 74.3 77.1 77.1 70.9 57.7 46.9 38.3 61.9
Year Lowest Occurred 1977 1978 1969 1983 1976 1961 1984 1984 1967 1976 1976 1989 1983
Mean Min. Temperature (F) 31.7 35.0 43.1 51.4 59.1 65.9 69.1 68.3 63.0 49.5 41.9 34.8 51.1
Highest Mean Min. Temperature (F) 41.3 43.5 49.7 57.4 63.5 69.6 72.5 72.5 67.9 57.2 50.7 45.5 53.3
Year Highest Occurred 1974 1962 1985 1981 1987 1981 1986 1987 1972 1985 1985 1971 1986
Lowest Mean Min. Temperature (F) 23.4 27.9 36.1 45.3 53.9 61.3 63.8 64.7 57.9 41.3 33.5 26.3 48.9
Year Lowest Occurred 1985 1968 1969 1987 1971 1966 1984 1973 1968 1987 1976 1963 1968
Mean Precipitation (in.) 5.73 4.96 6.23 5.35 5.38 4.37 4.46 3.29 3.13 3.59 4.99 6.20 57.68
Highest Precipitation (in.) 16.98 11.77 15.57 15.25 14.47 11.97 11.24 6.34 8.51 12.97 12.03 11.98 79.01
Year Highest Occurred 1979 1987 1961 1983 1983 1975 1979 1974 1973 1984 1964 1982 1979
Lowest Precipitation (in.) 0.84 1.57 1.56 0.63 0.21 0.49 0.18 0.54 0.21 0.00 0.46 0.96 36.77
Year Lowest Occurred 1986 1986 1968 1965 1988 1966 1962 1980 1963 1963 1967 1980 1963
Heating Degree Days (F) 660. 484. 295. 95. 9. 0. 0. 0. 0. 115. 310. 558. 2526.
Cooling Degree Days (F) 0. 0. 19. 71. 201. 378. 474. 459. 300. 75. 13. 6. 1996.

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