BACK BAY WILDLIFE REFUG, VIRGINIA

Monthly Average Temperature (Degrees Fahrenheit)

(440385)

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
1953 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 43.95 k 9999.00
1954 43.18 47.02 49.92 60.37 64.08 75.12 77.35 a 77.98 73.53 65.34 50.43 40.74 60.42
1955 38.03 40.62 52.69 59.29 a 66.50 71.08 80.16 79.35 d 73.92 64.19 52.25 39.31 59.78
1956 37.98 46.97 48.48 a 56.10 64.40 73.92 78.11 77.32 71.85 64.03 b 54.46 b 53.87 60.63
1957 42.47 45.82 49.76 62.80 68.58 76.82 78.15 76.98 a 75.90 60.14 b 55.00 47.60 a 61.67
1958 38.22 a 37.30 42.90 56.10 65.77 70.85 80.29 77.40 70.90 62.00 55.85 38.21 57.98
1959 39.06 44.38 48.56 58.73 68.05 73.93 77.47 a 78.92 a 73.95 66.11 53.82 45.84 60.74
1960 42.75 a 42.48 38.90 61.57 65.76 74.07 76.55 78.45 73.43 62.94 54.30 b 38.56 59.15
1961 37.34 b 44.38 52.02 a ----- z ----- z 71.77 h 79.23 i 78.42 75.00 n ----- z 54.48 e 42.96 f 53.33
1962 41.57 d 42.04 47.33 g 56.48 a 67.83 h 73.13 g 75.72 b 76.57 c 71.02 64.65 51.18 40.00 57.69
1963 38.15 36.82 53.13 58.53 a 63.58 73.52 77.48 a 77.27 68.90 62.81 55.20 38.05 a 58.62
1964 43.84 42.29 51.71 56.25 65.58 73.97 75.74 74.84 71.97 60.45 56.95 48.37 60.16
1965 42.73 41.32 44.79 53.67 67.10 ----- z 75.88 c 76.40 73.93 a 62.40 54.47 45.73 58.04
1966 39.08 39.86 50.50 55.15 63.35 71.43 78.40 76.40 72.48 63.42 53.62 43.32 58.92
1967 45.32 41.88 48.69 58.88 60.68 69.63 76.74 75.37 68.98 63.95 49.70 46.98 58.90
1968 38.68 36.93 50.89 56.12 65.27 74.55 78.08 79.65 72.05 64.95 54.15 42.19 59.46
1969 38.16 39.66 43.92 58.22 65.10 74.72 78.66 76.63 71.62 64.18 50.43 41.16 58.54
1970 35.03 a 42.39 a 45.73 a 56.83 68.00 e 74.77 78.04 h 77.25 e 75.44 f 65.07 c 53.45 a 44.81 b 56.33
1971 37.12 e 43.37 a 47.85 g 55.70 e 64.41 d 75.24 c 79.74 l 76.68 f 74.04 c 67.85 a 52.71 b 52.14 f 58.80
1972 47.11 d 42.62 49.39 57.63 63.31 69.80 78.58 77.47 72.95 b 62.50 52.66 b 49.90 b 60.33
1973 42.20 a 39.98 a 50.74 b 58.95 65.88 a 76.38 76.95 a 78.03 75.95 b 65.67 b 54.52 d 48.23 61.12
1974 50.84 b 45.57 e 53.15 a 60.63 67.00 d 73.32 b 78.13 76.79 72.98 58.62 a 55.29 i 46.72 b 62.16
1975 46.28 a 46.03 l 49.84 c 52.70 c 64.79 b 74.43 p 78.18 i 79.73 c 73.81 c 66.67 a 58.21 f 44.36 m 61.98
1976 40.16 50.10 54.61 c 59.64 b 64.30 c 73.82 j 76.92 e 74.48 c 71.25 h 59.65 k 45.24 i 40.53 p 60.03
1977 31.98 f 43.28 a 51.70 h 63.92 k 67.36 c 73.13 c 81.02 79.30 d 75.66 e 61.00 a 57.50 f 44.95 65.71
1978 37.94 33.38 44.50 f 57.25 62.11 72.60 e 75.33 e 79.29 72.98 c 61.60 f 56.48 a 47.62 f 60.82
1979 42.31 d 33.75 48.88 b 56.56 d 65.30 a 72.14 b 77.08 77.75 a 74.35 62.93 c 57.80 46.92 e 59.65
1980 42.15 a 37.69 b 48.94 d 58.75 67.39 73.88 b 79.46 e 78.20 f 76.21 a 62.47 52.18 h 45.71 g 60.77
1981 33.40 a 33.80 w 48.78 k 61.12 a 64.42 78.87 80.05 76.11 72.77 63.47 53.98 g 41.21 c 63.49
1982 37.12 a 43.04 48.97 53.41 b 66.61 c 73.20 b 77.95 a 76.28 b 70.38 61.73 55.62 d 47.41 h 60.39
1983 40.50 a 40.94 b 49.68 a 54.27 64.90 72.60 79.24 b 77.74 73.20 63.58 a 51.58 d 46.50 e 59.56
1984 35.05 b 45.32 d 44.32 53.55 b 66.48 74.76 a 75.90 77.34 71.00 66.78 a 50.34 a 50.13 a 59.25
1985 34.24 39.70 48.57 b 59.37 66.98 c 73.42 d 76.65 d 76.68 73.36 a 67.15 a 61.82 42.43 b 60.03
1986 39.76 41.86 47.90 56.20 65.29 75.83 80.92 76.90 72.30 66.71 56.05 46.26 60.50
1987 41.58 38.04 a 47.23 54.37 67.52 76.23 80.92 79.68 74.57 57.85 55.35 46.27 59.97
1988 37.17 a 44.24 50.32 57.62 65.41 i 74.08 79.42 79.52 71.98 60.38 k 54.36 i 44.95 j 61.79
1989 46.87 l 46.30 f 49.59 c 58.08 l 64.53 k 79.23 79.53 k 78.02 74.88 j 65.47 m 57.40 j 37.94 n 68.95
1990 48.79 j 51.58 i 49.00 q 59.00 66.82 73.69 i 79.62 j 78.27 70.75 l 65.22 o 54.53 l 52.07 p 68.03
1991 44.90 k 50.08 i 53.53 k 59.30 b 70.98 75.07 j 81.84 78.14 i 74.85 j 60.05 i 54.08 l 47.26 j 70.71
1992 44.21 l 46.69 k 49.39 58.59 a ----- z 72.12 a 81.85 77.39 74.79 i 60.98 j 57.31 l 47.52 i 67.87
1993 47.03 l 40.62 45.98 b 56.74 a 69.50 m 76.47 81.56 m 78.28 m 76.17 i 62.96 r 55.83 j 45.47 n 54.95
1994 38.58 l 44.83 a 51.63 62.70 j 64.80 k 77.07 81.35 k 76.53 72.74 i 59.30 k 60.17 j 49.94 m 62.52
1995 41.71 l 40.03 i 52.10 k 58.82 k 67.95 i 74.23 81.70 k 78.55 74.00 j 66.88 j 55.25 r 44.75 u 76.39
1996 40.35 n 42.74 l 48.63 l 58.97 a 64.48 j 75.15 j 77.65 k 75.50 i 73.88 j 65.83 j 50.68 m 48.97 o 58.97
1997 45.48 j 49.26 k 52.19 j 55.71 a 64.16 l 72.47 l 79.36 j 77.31 j 71.84 k 62.82 l 50.56 m 46.00 v 55.71
1998 50.12 n 50.73 m 51.68 l 61.70 b 67.08 m 74.55 j 80.57 i 78.28 o 74.90 i 64.62 n 55.69 n 51.94 o 61.70
1999 50.85 n 45.17 m 48.81 j 60.59 n 63.92 l 74.66 h 79.61 l 78.80 k 72.47 j 62.54 s 54.14 l 45.95 k 9999.00
2000 39.92 l 46.55 j 52.74 h 56.37 k 68.33 j 75.83 i 76.52 j 78.61 h 72.24 k 66.00 l 50.47 m 44.41 t 9999.00
2001 41.05 j 47.69 j 47.00 k 58.14 i 65.45 j 76.31 i 79.40 k 79.38 g 71.61 k 64.74 j 56.62 j 56.40 p 9999.00
2002 52.03 n 47.88 k 49.86 q 63.40 j 67.84 l 79.66 k 82.80 i 81.26 l 75.78 n 66.25 k 53.29 r 41.33 p 9999.00
2003 37.39 m 41.62 k 51.74 j 57.05 i 66.55 j 76.40 j 80.55 k 78.60 k 74.31 l ----- z 62.63 o 44.84 o 9999.00
2004 39.44 m 41.56 k 50.19 j 55.75 n 75.00 k 77.84 n 80.87 l 77.91 i 74.98 i 63.22 m 56.33 l 48.97 n 9999.00
2005 45.55 k 43.71 k 45.46 h 59.88 n 62.33 j 76.50 h 83.24 l 80.88 j 78.19 i 66.39 l 59.78 n 42.03 k 9999.00
2006 49.74 n 44.78 s 47.29 s 58.64 s 58.33 z 76.50 q 76.21 s 82.63 l 72.14 l 65.44 n 57.17 l 50.50 l 9999.00
2007 43.17 m 40.00 k 55.95 j 60.18 k 66.41 o ----- 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 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
2010 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
2011 36.90 44.38 48.74 62.52 68.47 77.57 81.00 79.45 a 74.78 65.10 b 56.65 50.35 62.16
2012 45.73 a 46.02 55.96 d 58.55 67.41 t ----- z ----- z ----- z ----- z ----- z ----- z ----- z 51.57
Period of Record Statistics
MEAN 40.25 41.92 49.07 57.71 65.78 74.18 78.35 77.60 72.96 63.65 54.18 44.81 59.89
S.D. 3.87 3.66 3.36 2.52 2.01 2.27 1.88 1.35 1.82 2.41 2.61 4.13 1.03
SKEW 0.56 -0.34 -0.70 0.00 -0.03 0.14 0.23 -0.13 -0.28 -0.45 0.51 0.02 0.30
MAX 50.84 50.10 55.96 62.80 70.98 79.23 81.85 79.73 76.21 67.85 61.82 53.87 62.16
MIN 33.40 33.38 38.90 52.70 60.68 69.63 75.33 74.48 68.90 57.85 49.70 38.05 57.98
NO YRS 36 37 36 42 35 36 34 39 33 32 29 28 22