BANKHEAD LOCK AND DAM, ALABAMA

Monthly Average Minimum Temperature (Degrees Fahrenheit)

(010505)

File last updated on May 16,
*** Note *** Provisional Data *** After Year/Month 201205
a = 1 day missing, b = 2 days missing, c = 3 days, ..etc..,
z = 26 or more days missing, A = Accumulations present
Long-term means based on columns; thus, the monthly row may not
sum (or average) to the long-term annual value.
MAXIMUM ALLOWABLE NUMBER OF MISSING DAYS : 5
Individual Months not used for annual or monthly statistics if more than 5 days are missing.
Individual Years not used for annual statistics if any month in that year has more than 5 days missing.
YEAR(S) JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANN
1957 ----- z 43.71 39.58 50.67 60.03 67.70 68.94 66.71 63.77 48.23 42.77 33.61 53.25
1958 27.58 24.18 38.52 48.40 56.94 66.23 69.26 67.58 63.33 49.84 41.70 29.94 48.62
1959 27.35 35.71 35.35 48.37 59.55 65.53 68.87 68.84 64.43 56.06 37.67 35.29 50.25
1960 34.32 ----- z 31.52 49.07 53.68 64.83 68.35 69.68 64.07 53.42 37.97 29.23 50.56
1961 26.03 36.46 43.94 43.23 54.03 62.93 66.39 66.58 61.83 46.16 42.87 34.35 48.73
1962 29.42 38.11 36.61 44.40 58.60 a 64.37 68.00 67.94 61.77 51.52 38.50 27.97 48.93
1963 24.00 25.25 40.29 51.97 58.23 64.23 66.84 67.13 59.23 48.84 39.20 25.03 47.52
1964 26.84 28.62 37.35 53.87 58.03 64.87 66.42 65.94 61.77 46.35 41.80 34.35 48.85
1965 31.10 30.32 37.87 50.83 57.16 63.33 67.29 66.90 62.50 48.48 43.59 a 32.65 49.34
1966 29.13 32.07 37.35 47.93 56.65 60.37 67.74 65.45 60.83 46.35 39.67 34.58 48.18
1967 30.35 29.57 40.29 52.47 53.77 63.87 65.10 63.87 57.13 44.65 34.80 37.94 47.82
1968 30.10 27.83 35.16 48.20 53.84 63.63 67.26 63.84 56.57 46.23 36.50 28.26 46.45
1969 31.71 32.68 31.23 47.77 55.48 62.47 66.84 63.19 59.47 50.48 35.43 31.84 47.38
1970 25.97 27.04 38.81 52.07 54.61 62.03 67.29 n 69.42 65.50 51.13 36.80 37.87 47.39
1971 33.65 30.71 35.16 44.13 51.19 63.90 66.45 64.65 61.53 52.48 36.27 42.39 48.54
1972 31.90 32.21 38.10 44.67 52.87 59.03 62.29 ----- z 62.60 51.68 40.43 37.81 46.69
1973 31.81 31.54 45.48 47.33 53.45 65.30 67.87 64.87 a 64.97 53.16 43.87 31.90 50.13
1974 41.35 32.46 46.16 45.27 58.97 61.20 65.39 66.19 59.63 45.55 39.10 34.71 49.67
1975 35.61 37.57 39.06 45.47 59.23 63.50 68.19 68.71 60.20 51.13 44.86 a 34.32 50.65
1976 ----- z 36.71 a ----- z ----- z ----- z 65.30 ----- z ----- z 63.47 48.03 34.72 a 30.16 46.40
1977 23.37 d 30.57 44.65 51.77 60.74 66.90 72.06 71.56 m 65.83 g 48.55 46.10 32.97 47.77
1978 26.42 25.68 37.55 49.03 58.68 68.20 72.00 70.32 67.27 49.23 46.90 33.90 50.43
1979 27.68 33.18 40.77 51.67 57.81 ----- z 70.97 69.19 64.53 49.90 41.17 33.77 49.15
1980 36.81 29.66 39.06 46.33 59.48 66.97 73.68 72.81 67.90 47.07 a 41.80 32.00 51.13
1981 27.35 32.75 37.10 53.13 55.84 69.63 71.65 67.03 a 56.60 49.61 41.23 33.16 49.59
1982 28.90 35.32 46.35 47.50 57.90 63.93 69.68 68.87 58.60 49.94 41.37 41.29 50.80
1983 30.81 34.79 38.45 41.87 54.35 62.90 69.39 70.23 60.70 51.87 39.93 30.68 48.83
1984 27.00 33.86 39.81 47.73 53.35 62.97 68.10 67.48 59.50 57.87 38.90 41.84 49.87
1985 24.90 32.32 43.16 48.40 57.87 a 64.37 67.26 67.77 60.97 56.45 49.30 27.29 50.01
1986 26.68 37.29 38.48 44.20 57.61 66.53 69.16 66.90 65.73 53.61 48.23 35.84 50.86
1987 30.71 36.71 41.16 44.93 61.61 64.10 68.35 69.45 60.97 41.29 40.77 37.29 49.78
1988 28.68 29.62 40.32 48.43 52.68 61.17 67.81 67.71 64.53 44.94 43.73 32.71 48.53
1989 36.55 36.18 45.84 46.70 56.00 66.57 68.42 67.32 62.57 48.03 39.43 24.06 49.81
1990 36.16 41.86 42.68 45.43 55.39 64.00 67.26 67.90 61.07 47.65 37.90 35.10 50.20
1991 33.81 33.96 42.32 53.20 61.74 65.77 69.94 67.71 61.50 50.23 36.97 37.71 51.24
1992 32.03 35.59 38.39 46.70 53.97 62.57 69.06 64.61 62.93 47.39 39.97 36.19 49.12
1993 37.13 31.43 35.26 44.70 54.97 62.63 69.00 67.42 59.60 48.16 37.93 32.29 48.38
1994 26.65 32.29 37.42 50.80 54.97 63.40 64.87 64.97 60.00 53.23 45.13 37.61 49.28
1995 ----- z 26.00 44.10 47.77 59.19 62.00 67.65 70.68 59.13 47.26 35.40 29.77 49.90
1996 27.58 30.21 33.42 41.63 57.90 62.73 65.19 64.61 58.53 47.55 37.73 32.42 46.63
1997 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1998 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1999 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
2000 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
2001 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
2002 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
2003 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
2004 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
2005 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
2006 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
2007 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
2008 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
2009 32.94 35.93 47.68 49.93 62.58 68.73 68.55 69.26 65.90 51.61 41.37 34.03 52.38
2010 29.42 29.93 39.23 51.17 62.29 70.90 73.68 73.58 64.17 49.65 43.70 28.39 51.34
2011 29.42 36.75 45.74 54.40 57.87 70.93 72.52 69.48 61.27 48.39 43.50 38.10 52.36
2012 38.23 a 41.31 53.45 52.80 63.56 v ----- z ----- z ----- z ----- z ----- z ----- z ----- z 46.45
Period of Record Statistics
MEAN 30.43 32.93 40.01 48.29 56.93 64.58 68.38 67.57 61.87 49.52 40.63 33.55 49.47
S.D. 4.18 4.43 4.49 3.34 2.87 2.64 2.39 2.33 2.74 3.31 3.60 4.14 1.43
SKEW 0.59 0.21 0.54 -0.04 0.10 0.56 0.22 0.33 0.10 0.31 0.39 -0.05 -0.03
MAX 41.35 43.71 53.45 54.40 62.58 70.93 73.68 73.58 67.90 57.87 49.30 42.39 52.38
MIN 23.37 24.18 31.23 41.63 51.19 59.03 62.29 63.19 56.57 41.29 34.72 24.06 46.45
NO YRS 41 43 43 43 42 42 41 40 42 43 43 43 35