YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1958 | ----- | z | ----- | z | 38.95 | l | 48.13 | 62.26 | 66.23 | d | 72.52 | 73.45 | 67.30 | 61.06 | 47.41 | a | 45.81 | 60.46 | c | |||||||
1959 | 41.14 | b | 36.61 | 47.94 | 56.17 | 55.00 | 70.53 | 76.23 | 69.30 | a | 63.80 | 58.94 | 48.87 | 41.43 | a | 55.50 | ||||||||||
1960 | 33.87 | 35.31 | 47.81 | 51.70 | 57.26 | 71.80 | 75.10 | 71.84 | 68.00 | 55.16 | 44.70 | 38.97 | a | 54.29 | ||||||||||||
1961 | 42.58 | 41.00 | 39.61 | 50.73 | 54.74 | 69.67 | 75.13 | 70.74 | 61.47 | 55.00 | 41.23 | 37.32 | 53.27 | |||||||||||||
1962 | 39.48 | 39.57 | 38.65 | 57.96 | b | 53.73 | a | 66.47 | 72.19 | 73.84 | 67.80 | 58.69 | b | 51.13 | 43.87 | 55.28 | ||||||||||
1963 | 37.00 | 47.39 | 41.97 | 44.55 | a | 59.97 | 62.72 | a | 73.81 | 70.19 | 68.77 | 59.29 | 46.66 | a | 43.33 | a | 54.64 | |||||||||
1964 | 36.33 | a | 38.00 | d | 39.93 | a | 46.70 | c | 55.30 | a | 66.04 | c | 73.74 | 71.77 | a | 65.14 | a | 63.77 | a | 41.75 | b | 39.53 | a | 53.17 | ||
1965 | 41.64 | c | 42.04 | d | 41.14 | b | 46.31 | a | 54.60 | f | 62.78 | g | 72.03 | a | 71.93 | a | 61.72 | a | 62.84 | 47.76 | a | 38.29 | 52.57 | b | ||
1966 | 36.28 | b | 36.11 | 46.74 | 54.89 | b | 61.84 | 67.07 | a | 72.03 | a | 74.19 | 67.97 | a | 57.69 | b | 47.00 | 39.19 | 55.08 | |||||||
1967 | 38.97 | 42.75 | d | 44.25 | c | 38.52 | c | 57.78 | d | 62.46 | b | 73.10 | 73.55 | 64.77 | 60.31 | b | 49.69 | a | 33.68 | 53.32 | ||||||
1968 | 38.13 | a | 45.66 | 45.17 | a | 48.07 | 56.57 | a | 68.67 | 73.03 | 67.19 | 66.87 | 56.58 | 45.50 | 33.03 | 53.71 | ||||||||||
1969 | 39.94 | 34.86 | 40.55 | 48.10 | 57.74 | 62.30 | 72.16 | 75.58 | 67.87 | 52.10 | 45.43 | 39.97 | 53.05 | |||||||||||||
1970 | 37.29 | 41.57 | 41.77 | 42.70 | 58.94 | 64.17 | 73.45 | b | 72.14 | b | 62.83 | 53.52 | 45.97 | 36.43 | a | 52.56 | ||||||||||
1971 | 37.13 | 40.14 | 44.00 | 45.90 | 51.55 | 63.43 | b | 74.03 | 69.19 | 64.97 | 49.27 | a | 42.76 | a | 31.57 | a | 51.16 | |||||||||
1972 | 36.57 | a | 42.80 | i | 51.20 | a | 51.33 | i | 56.81 | e | 66.10 | a | 76.00 | a | 68.97 | a | 62.25 | b | 49.93 | a | 40.11 | b | 33.73 | a | 54.17 | b |
1973 | 33.00 | c | 37.58 | b | 34.97 | 45.37 | c | 56.32 | 63.80 | 70.77 | 69.13 | 63.87 | 55.00 | a | 42.25 | b | 40.00 | d | 51.00 | |||||||
1974 | 34.39 | 38.12 | c | 42.70 | a | 46.79 | b | 58.68 | 71.50 | 71.40 | a | 70.74 | 67.39 | b | 55.80 | a | 45.73 | 36.74 | 53.33 | |||||||
1975 | 38.68 | 38.07 | 39.73 | a | 41.77 | 56.58 | 65.60 | 71.97 | 70.58 | 66.97 | 52.90 | a | 45.53 | 41.03 | b | 52.45 | ||||||||||
1976 | 41.39 | 42.07 | 41.65 | 45.27 | 60.29 | 66.48 | a | 73.90 | 68.65 | 62.37 | 55.71 | 49.87 | 41.00 | 54.05 | ||||||||||||
1977 | 37.52 | 44.52 | a | 38.30 | a | 51.60 | 48.97 | 64.53 | 66.58 | 67.48 | 65.13 | 59.48 | 49.93 | a | 45.11 | c | 53.26 | |||||||||
1978 | 38.23 | 40.50 | 45.87 | 44.97 | 56.77 | 69.31 | a | 73.38 | b | 69.87 | 62.87 | 60.06 | 41.50 | b | 33.26 | 53.05 | ||||||||||
1979 | 31.65 | 37.64 | 41.48 | 51.27 | 57.52 | 67.60 | 72.35 | 67.61 | 69.17 | 56.58 | 41.53 | 41.81 | 53.02 | |||||||||||||
1980 | 39.61 | 43.00 | 39.55 | 48.77 | 50.58 | ----- | z | 66.39 | 68.70 | a | 63.00 | 51.96 | f | 47.33 | 44.47 | a | 51.14 | b | ||||||||
1981 | 42.39 | 41.21 | 39.94 | 52.47 | 55.27 | a | 72.62 | a | 72.32 | 71.45 | 63.97 | 50.40 | a | 47.17 | 41.84 | 54.25 | ||||||||||
1982 | 35.94 | 40.43 | 40.13 | 46.10 | a | 56.19 | 62.97 | 68.58 | 69.73 | a | 61.63 | 52.39 | 40.87 | 35.58 | 50.88 | |||||||||||
1983 | 40.10 | 39.50 | 41.13 | 41.13 | 57.86 | b | 62.90 | 69.52 | 66.52 | 64.43 | b | 54.90 | 42.93 | 39.32 | 51.69 | |||||||||||
1984 | 40.42 | 39.14 | 44.74 | 46.33 | 62.03 | 63.20 | 67.39 | 66.47 | a | 65.83 | 47.57 | c | 40.96 | b | 34.77 | 51.57 | ||||||||||
1985 | 35.71 | 35.25 | 38.68 | 51.86 | a | 56.21 | c | 68.31 | a | 73.32 | c | 69.63 | a | 55.90 | a | 53.80 | a | 40.17 | a | 39.80 | a | 51.55 | ||||
1986 | 43.79 | b | 40.25 | 47.90 | b | 47.31 | a | 57.20 | a | 68.36 | b | 67.52 | 70.97 | 57.47 | 51.61 | c | 44.67 | 38.55 | 52.96 | |||||||
1987 | 35.13 | 38.75 | 38.97 | a | 51.87 | 55.42 | 67.27 | 64.45 | 69.16 | 64.40 | 57.90 | 41.50 | 31.84 | 51.39 | ||||||||||||
1988 | 36.42 | 41.69 | 42.81 | 47.10 | 54.61 | 63.63 | 72.19 | 65.97 | 61.97 | 61.00 | 41.76 | a | 35.00 | 52.01 | ||||||||||||
1989 | 33.65 | 35.46 | 43.26 | d | 53.47 | 53.55 | 64.50 | 72.10 | 66.27 | a | 62.14 | b | 52.68 | 47.65 | d | 39.61 | 52.03 | |||||||||
1990 | 34.57 | c | 35.57 | 44.67 | a | 48.87 | 53.87 | 68.03 | 86.81 | 69.61 | 61.32 | b | 55.13 | a | 41.70 | 32.67 | a | 52.74 | ||||||||
1991 | 36.39 | 44.46 | 34.97 | 43.67 | 51.61 | c | 60.23 | 68.94 | 66.06 | 64.00 | a | 56.39 | 42.83 | 38.06 | 50.63 | |||||||||||
1992 | 37.50 | a | 42.03 | 42.71 | 53.17 | 58.65 | ----- | z | 68.71 | 70.94 | 66.80 | 55.55 | 40.13 | 32.94 | 51.74 | a | ||||||||||
1993 | 35.97 | b | 36.63 | a | 45.03 | 49.90 | 55.13 | 59.53 | 53.32 | 53.64 | f | 50.56 | c | 42.48 | 41.17 | 37.59 | b | 46.12 | a | |||||||
1994 | 40.13 | a | 35.89 | 46.72 | b | 49.57 | 54.10 | a | 70.83 | 71.64 | c | 72.30 | k | 59.96 | e | 50.67 | a | 34.10 | a | 38.00 | 50.15 | a | ||||
1995 | 36.74 | 46.00 | 41.60 | a | 44.87 | 48.81 | 61.43 | 72.66 | b | 74.48 | 67.77 | 57.29 | 50.90 | 40.68 | 53.60 | |||||||||||
1996 | 38.68 | 42.62 | 43.68 | 51.77 | 57.48 | 67.10 | 74.97 | 72.29 | 63.27 | 53.90 | 44.73 | 38.74 | 54.10 | |||||||||||||
1997 | 38.84 | 40.56 | a | 49.48 | 49.07 | 64.58 | 64.00 | 69.32 | 71.94 | 65.43 | 53.00 | 45.23 | 36.68 | 54.01 | ||||||||||||
1998 | 39.52 | b | 35.54 | 40.77 | 44.47 | 49.65 | 59.87 | 72.81 | 71.48 | 61.97 | 52.74 | 43.30 | 37.93 | b | 50.84 | |||||||||||
1999 | 39.68 | 39.15 | a | 42.16 | 42.50 | 54.39 | 63.33 | 69.90 | 69.80 | a | 66.76 | a | 62.38 | b | 50.79 | b | 40.17 | b | 53.42 | |||||||
2000 | 42.72 | b | 40.54 | a | 43.67 | d | 54.28 | a | 62.69 | b | 70.04 | b | 74.13 | 71.71 | 66.69 | d | 54.16 | 41.07 | 43.90 | 55.47 | ||||||
2001 | 37.97 | b | 34.76 | c | 45.42 | 46.31 | a | 64.71 | 69.50 | 71.26 | 74.21 | c | 70.70 | 61.10 | 48.27 | 37.43 | c | 55.14 | ||||||||
2002 | 39.23 | 43.44 | a | 41.65 | 50.00 | r | 57.07 | a | 70.30 | 75.23 | 73.81 | 68.77 | 55.20 | a | 47.47 | 37.80 | a | 55.45 | a | |||||||
2003 | 47.03 | 39.64 | 45.28 | b | 43.93 | a | 59.14 | b | 68.62 | a | 77.23 | a | 72.29 | 68.69 | d | 64.58 | 41.45 | a | 38.90 | a | 55.57 | |||||
2004 | 38.52 | 36.22 | f | 55.38 | e | 50.60 | 59.65 | 68.20 | 73.35 | 71.32 | 65.80 | 53.63 | a | 40.76 | a | 39.10 | b | 56.03 | a | |||||||
2005 | 39.84 | 39.13 | e | 43.03 | b | ----- | z | ----- | z | 66.86 | h | 75.71 | 71.10 | a | 64.50 | 56.19 | 49.30 | 41.87 | a | 53.41 | c | |||||
2006 | 40.23 | 44.04 | b | 37.93 | a | 48.33 | c | 63.31 | b | 72.43 | 75.71 | 71.93 | b | 64.54 | b | 54.23 | i | 48.65 | g | 38.19 | e | 55.66 | b | |||
2007 | 35.08 | e | 39.86 | f | 48.04 | d | 51.22 | c | 61.57 | c | 70.10 | a | 75.70 | a | 73.34 | b | 63.89 | b | 55.03 | 50.83 | 34.50 | a | 56.30 | a | ||
2008 | 34.80 | a | 39.66 | 44.74 | 49.13 | 55.00 | 70.30 | 73.27 | a | 71.21 | l | 68.47 | 58.33 | a | 50.50 | 36.83 | a | 52.82 | a | |||||||
2009 | 42.94 | 37.88 | d | 44.07 | c | 47.07 | 64.82 | c | 61.48 | e | 76.41 | b | 73.03 | b | 70.17 | 52.32 | 48.83 | a | 35.62 | b | 54.55 | |||||
2010 | 39.37 | a | 39.54 | 41.94 | 43.52 | c | 50.62 | b | 66.70 | 75.10 | 70.73 | a | 69.72 | a | 55.53 | a | 44.10 | a | 41.62 | b | 53.21 | |||||
2011 | 40.43 | a | 36.93 | a | 44.96 | c | 47.23 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 42.39 | h |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 38.31 | 39.76 | 43.03 | 48.10 | 56.87 | 66.37 | 72.28 | 70.66 | 64.71 | 55.64 | 44.90 | 38.40 | 53.17 | |||||||||||||
S.D. | 2.99 | 3.16 | 3.81 | 4.04 | 3.99 | 3.50 | 4.33 | 2.41 | 3.68 | 4.26 | 3.80 | 3.49 | 1.41 | |||||||||||||
SKEW | 0.26 | 0.32 | 0.56 | 0.13 | 0.06 | -0.10 | -1.07 | -0.20 | -1.23 | -0.26 | -0.17 | -0.01 | -0.06 | |||||||||||||
MAX | 47.03 | 47.39 | 55.38 | 57.96 | 64.82 | 72.62 | 86.81 | 75.58 | 70.70 | 64.58 | 51.13 | 45.81 | 55.57 | |||||||||||||
MIN | 31.65 | 34.76 | 34.97 | 38.52 | 48.81 | 59.53 | 53.32 | 65.97 | 50.56 | 42.48 | 34.10 | 31.57 | 50.63 | |||||||||||||
YRS | 53 | 50 | 53 | 51 | 51 | 49 | 53 | 50 | 53 | 51 | 52 | 53 | 40 |