BANKHEAD LOCK AND DAM, ALABAMA

NCDC 1961-1990 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F) 51.9 57.0 66.2 75.1 82.1 89.0 91.3 91.0 85.7 76.0 65.8 56.1 73.9
Highest Mean Max. Temperature (F) 62.6 67.1 72.7 80.6 89.6 94.0 97.3 96.8 92.0 83.6 71.6 65.0 77.2
Year Highest Occurred 1974 1976 1974 1981 1962 1977 1980 1980 1990 1963 1978 1984 1990
Lowest Mean Max. Temperature (F) 41.3 46.4 58.1 66.0 76.2 84.2 86.2 85.6 79.5 70.2 57.1 44.2 71.1
Year Lowest Occurred 1978 1978 1969 1983 1976 1961 1989 1967 1974 1977 1976 1989 1983
Mean Temperature (F) 40.9 44.9 53.2 61.4 69.2 76.6 79.7 79.1 73.8 62.6 53.3 44.9 61.6
Highest Mean Temperature (F) 52.0 53.3 59.5 66.9 74.2 81.4 85.5 84.8 79.8 68.8 60.0 53.4 63.7
Year Highest Occurred 1974 1990 1974 1981 1962 1981 1980 1980 1980 1984 1985 1984 1990
Lowest Mean Temperature (F) 33.1 36.1 44.7 54.0 64.3 73.0 75.8 74.8 68.8 58.2 45.9 34.2 59.7
Year Lowest Occurred 1977 1978 1969 1983 1976 1974 1972 1967 1967 1987 1976 1989 1968
Mean Min. Temperature (F) 29.9 32.6 40.1 47.7 56.3 64.1 68.0 67.2 61.9 49.3 40.8 33.6 49.3
Highest Mean Min. Temperature (F) 41.4 41.9 46.4 53.9 61.6 69.6 73.7 72.8 67.9 57.9 49.3 42.4 51.1
Year Highest Occurred 1974 1990 1982 1964 1987 1981 1980 1980 1980 1984 1985 1971 1980
Lowest Mean Min. Temperature (F) 23.4 25.3 31.2 41.9 51.2 59.0 62.3 63.2 56.6 41.3 34.7 24.1 46.5
Year Lowest Occurred 1977 1963 1969 1983 1971 1972 1972 1969 1981 1987 1976 1989 1968
Mean Precipitation (in.) 5.73 5.37 6.59 5.28 4.51 4.30 5.40 3.72 3.62 3.67 4.26 5.72 58.17
Highest Precipitation (in.) 10.32 15.22 16.57 14.35 11.84 9.99 9.51 9.90 10.53 9.82 7.88 19.04 85.88
Year Highest Occurred 1974 1961 1976 1979 1976 1989 1985 1967 1988 1983 1979 1983 1983
Lowest Precipitation (in.) 1.35 1.58 1.55 0.81 0.60 1.43 0.51 1.20 0.52 0.00 1.06 0.87 40.45
Year Lowest Occurred 1981 1968 1985 1986 1965 1969 1983 1980 1984 1963 1981 1980 1981
Heating Degree Days (F) 747. 563. 378. 153. 30. 0. 0. 0. 8. 134. 359. 623. 2995.
Cooling Degree Days (F) 0. 0. 12. 45. 160. 348. 456. 437. 272. 60. 8. 0. 1798.

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