BACK BAY WILDLIFE REFUG, VIRGINIA

Monthly Average Minimum 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 37.10 k 9999.00
1954 34.52 38.25 41.23 51.87 56.74 67.30 70.07 a 70.42 66.17 56.26 43.40 31.45 52.31
1955 30.29 31.50 42.97 50.83 a 59.35 63.67 73.61 73.85 d 69.50 56.48 43.17 31.77 52.25
1956 31.74 38.72 39.23 a 47.70 55.45 67.50 71.45 71.13 65.67 60.24 b 45.21 a 44.61 53.22
1957 33.23 38.68 41.71 52.13 59.68 69.50 70.13 69.77 a 69.77 54.10 b 48.57 39.33 a 53.88
1958 30.93 a 28.93 37.68 47.70 58.35 63.80 73.29 71.77 64.73 55.71 47.87 30.87 50.97
1959 30.61 34.79 39.35 50.10 61.00 67.13 72.03 a 72.60 a 68.53 59.77 45.80 38.48 53.35
1960 35.60 a 35.34 32.23 52.53 58.87 67.83 70.77 72.42 69.00 56.74 46.90 a 29.94 52.35
1961 29.76 b 36.71 42.63 a ----- z ----- z 62.17 g 69.95 i 66.52 65.00 n ----- z 46.92 e 34.46 e 42.83
1962 32.59 d 33.00 39.40 f 47.34 a 58.65 h 66.57 g 69.38 b 70.79 c 64.00 57.42 44.43 32.58 50.17
1963 30.16 28.14 42.55 49.13 54.87 66.13 70.13 a 70.19 63.07 56.39 46.87 30.77 50.70
1964 35.61 34.03 42.52 48.33 57.42 66.33 69.13 68.39 65.23 53.94 48.63 40.90 52.54
1965 34.52 31.50 36.48 43.83 57.74 ----- z 68.90 68.45 67.00 a 54.81 46.53 37.65 49.77
1966 32.23 33.00 41.87 47.53 55.16 63.83 71.10 69.90 65.20 55.71 45.90 35.65 51.42
1967 37.45 33.18 39.06 47.73 50.45 63.20 70.39 69.61 62.33 56.39 40.47 38.90 50.76
1968 30.77 29.21 40.84 47.87 56.94 66.47 71.74 72.48 65.63 57.97 44.90 33.61 51.54
1969 30.26 33.39 35.97 48.00 57.42 67.83 71.55 69.55 65.23 57.39 42.37 33.39 51.03
1970 26.10 a 33.44 a 38.10 a 48.20 59.18 c 68.13 70.63 d 71.07 d 68.79 b 59.55 b 46.79 a 37.37 a 52.28
1971 28.96 d 34.21 39.07 c 47.89 b 57.61 c 70.14 b 72.90 j 70.27 e 68.52 a 62.97 a 44.11 b 44.76 b 51.68
1972 39.14 b 34.86 40.77 48.07 57.52 62.23 71.77 70.94 66.43 b 56.19 44.61 b 41.80 a 52.86
1973 34.57 a 32.37 a 42.10 b 49.87 57.17 a 69.07 69.33 a 71.13 68.75 b 57.03 b 44.58 d 39.77 52.98
1974 41.69 b 37.04 d 42.93 a 49.97 58.54 c 66.25 b 70.55 70.74 66.30 49.77 a 46.00 g 38.07 b 53.80
1975 36.97 a 37.16 i 39.59 b 44.19 c 57.45 b 66.00 p 70.64 i 71.18 c 67.11 c 59.10 a 48.68 e 34.85 k 53.03
1976 29.68 38.72 44.38 b 48.39 b 55.82 c 64.50 j 67.88 e 66.21 b 62.45 h 50.86 i 33.57 i 28.71 n 50.16
1977 21.85 d 31.81 a 42.50 g 52.26 k 57.04 c 62.31 a 71.29 69.37 d 66.84 e 52.53 a 48.38 d 35.16 51.66
1978 28.71 25.11 34.65 e 46.63 53.90 63.42 d 66.85 e 70.19 63.74 c 51.92 f 48.93 38.72 f 50.21
1979 33.52 d 25.79 40.77 47.25 b 57.16 64.30 70.00 71.10 a 68.30 53.07 b 49.47 38.73 e 51.62
1980 35.20 a 29.30 b 39.43 c 48.67 59.16 65.24 a 70.46 e 69.82 c 68.59 a 53.90 42.92 f 36.52 f 53.98
1981 23.40 a 20.80 w 39.30 k 49.14 a 55.97 69.90 72.10 69.06 64.10 53.06 42.96 c 33.72 b 53.34
1982 29.13 35.93 39.55 45.66 a 58.97 a 66.04 b 71.65 68.94 62.60 54.52 47.89 c 41.33 d 51.85
1983 34.50 a 34.00 a 42.13 a 46.40 57.03 64.57 70.24 b 68.77 65.00 55.90 a 41.62 d 37.70 d 51.49
1984 26.38 b 36.36 d 36.32 46.00 56.23 65.83 a 67.42 69.13 62.83 59.20 a 41.34 a 40.60 a 50.64
1985 24.42 29.14 38.93 b 48.57 57.57 c 62.69 d 67.19 d 68.03 64.59 a 60.00 54.83 33.43 a 50.78
1986 31.52 35.04 38.61 47.53 57.23 67.87 73.48 69.97 65.57 59.19 47.80 38.68 52.71
1987 33.65 29.67 a 37.87 46.27 56.74 66.67 71.00 71.03 66.73 47.90 45.20 37.68 50.87
1988 28.52 33.24 40.16 47.37 55.55 i 62.87 70.16 71.16 65.00 49.90 k 43.48 i 32.95 j 52.31
1989 36.21 l 36.91 f 40.19 47.94 l 54.25 k 69.27 70.35 k 70.68 67.00 j 55.74 l 47.30 j 27.32 l 60.05
1990 36.29 j 40.68 i 38.53 p 48.20 56.48 63.38 i 69.24 j 69.77 60.72 l 54.31 o 42.28 l 39.93 p 58.15
1991 35.35 k 37.45 h 43.38 j 47.07 b 60.52 65.95 j 72.00 69.32 i 64.90 j 50.13 h 44.39 l 35.95 i 59.86
1992 35.85 k 37.37 j 38.35 48.07 ----- z 64.14 a 73.35 69.13 67.29 i 53.14 j 49.53 k 38.86 i 58.61
1993 39.47 l 31.14 37.24 b 46.72 a 60.11 m 66.70 72.89 m 68.22 m 65.81 i 54.00 r 46.30 j 37.24 n 45.45
1994 30.63 l 32.71 40.19 52.35 j 55.55 k 69.20 72.60 k 68.10 62.57 i 49.15 k 50.14 i 41.00 m 52.55
1995 33.63 l 30.68 i 42.20 k 46.89 k 57.59 i 66.23 72.15 k 70.77 64.15 j 54.81 j 44.00 r 36.10 u 68.50
1996 30.41 n 33.53 l 38.79 l 47.00 a 54.95 j 66.25 j 68.40 k 68.09 i 65.10 j 54.86 j 40.53 m 39.81 o 47.00
1997 35.86 j 38.94 k 43.24 j 45.37 53.42 l 62.67 l 70.67 j 67.67 j 61.74 k 52.21 l 39.71 m 36.62 o 45.37
1998 40.88 n 41.53 m 42.32 l 51.43 56.39 m 64.60 j 70.59 i 69.56 o 65.10 i 55.88 n 46.81 n 41.94 o 51.43
1999 36.76 n 34.73 m 36.24 j 47.75 n 52.89 l 65.45 h 69.68 l 69.35 k 65.20 j 54.08 s 41.00 l 32.95 k 9999.00
2000 25.89 l 34.32 j 40.57 h 44.89 k 56.95 i 66.43 i 67.57 j 69.74 h 63.05 k 55.74 l 39.35 m 34.27 t 9999.00
2001 32.24 j 38.28 j 38.80 k 47.14 i 55.67 j 67.81 i 71.15 k 71.08 g 62.79 k 51.52 j 46.00 j 47.93 p 9999.00
2002 41.29 n 36.12 k 40.43 q 52.00 j 57.84 l 71.05 k 74.77 i 73.11 l 66.06 n 57.65 k 42.25 r 33.33 p 9999.00
2003 29.61 m 32.35 k 39.86 j 45.38 i 56.52 j 67.00 j 71.50 k 69.55 k 66.22 l ----- z 51.60 o 33.38 o 9999.00
2004 29.83 m 32.83 k 41.00 j 45.62 n 64.55 k 67.88 n 72.37 l 70.14 i 67.95 i 56.06 m 48.17 l 40.24 n 9999.00
2005 34.75 k 35.53 k 36.09 h 49.94 n 53.67 j 68.09 h 74.53 l 72.00 j 69.29 i 58.63 l 47.94 n 32.55 k 9999.00
2006 42.59 n 36.67 s 40.25 s 48.45 s 48.67 z 68.46 q 69.00 s 73.26 l 63.78 l 55.29 n 47.00 l 40.00 l 9999.00
2007 33.22 m 29.29 k 43.05 j 47.26 k 54.69 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 30.94 36.14 42.61 55.57 62.26 71.53 75.13 73.83 a 69.47 59.20 a 49.33 43.94 55.83
2012 38.53 a 38.93 48.67 d 51.77 61.18 t ----- z ----- z ----- z ----- z ----- z ----- z ----- z 44.47
Period of Record Statistics
MEAN 31.83 33.33 39.97 48.33 57.40 66.25 70.75 70.20 66.19 56.33 46.08 37.00 52.09
S.D. 4.33 3.56 2.93 2.30 2.12 2.46 1.86 1.63 2.16 3.14 2.96 4.19 1.23
SKEW -0.10 -0.35 0.08 0.81 -0.60 0.12 -0.02 -0.06 -0.01 -0.50 0.42 0.08 1.14
MAX 41.69 38.93 48.67 55.57 62.26 71.53 75.13 73.85 69.77 62.97 54.83 44.76 55.83
MIN 21.85 25.11 32.23 43.83 50.45 62.23 66.85 66.21 62.33 47.90 40.47 29.94 50.64
NO YRS 37 37 38 42 35 36 35 41 34 32 32 31 24