YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 72.20 | 60.74 | 66.47 | j | ||
1952 | 59.87 | 64.66 | 59.97 | 67.55 | a | 82.35 | 80.00 | 93.71 | 94.48 | 95.25 | b | 86.90 | ----- | z | 63.00 | 77.07 | a | |||||||||
1953 | 70.97 | 69.14 | 68.97 | 68.07 | 74.29 | 82.87 | 92.84 | 90.03 | 89.21 | a | 83.52 | 74.60 | 68.39 | 77.74 | ||||||||||||
1954 | 62.72 | b | 73.00 | a | 63.61 | 70.97 | 76.87 | 82.10 | a | 94.03 | 88.30 | a | 91.40 | 82.48 | 76.70 | 66.87 | 77.42 | |||||||||
1955 | 57.75 | c | 64.85 | a | 70.33 | a | 73.25 | b | 73.03 | b | 82.30 | 87.58 | 93.53 | a | 92.66 | a | 79.71 | 69.96 | e | 65.07 | d | 75.84 | ||||
1956 | 64.13 | 61.54 | c | 73.19 | 68.62 | a | 77.61 | 88.22 | c | 90.84 | 89.96 | c | 96.53 | 77.84 | 79.37 | 70.65 | 78.21 | |||||||||
1957 | 59.27 | a | 67.57 | 68.28 | b | 70.97 | 71.10 | a | 89.70 | 96.00 | 93.58 | 89.93 | 74.17 | a | 67.43 | 69.23 | 76.44 | |||||||||
1958 | 67.06 | 67.11 | a | 63.71 | 75.07 | b | 82.97 | 86.13 | 92.07 | a | 92.87 | 93.07 | 86.93 | a | 73.77 | 74.67 | a | 79.62 | ||||||||
1959 | 69.97 | 62.46 | 75.52 | 76.80 | 73.81 | 86.93 | 93.71 | 89.77 | 85.67 | 82.63 | a | 77.43 | 67.06 | 78.48 | ||||||||||||
1960 | 60.81 | 62.21 | 70.84 | 75.53 | 78.73 | a | 87.73 | 95.03 | 90.84 | 91.73 | 79.87 | 69.73 | 66.26 | 77.44 | ||||||||||||
1961 | 71.26 | 70.75 | 67.45 | 76.47 | 74.35 | 86.83 | 89.55 | 90.55 | 85.00 | 77.71 | 67.97 | 61.16 | 76.59 | |||||||||||||
1962 | 62.10 | 56.61 | 59.35 | 75.27 | 71.97 | a | 78.83 | 86.13 | 90.45 | 86.30 | 77.19 | 69.20 | 65.23 | 73.22 | ||||||||||||
1963 | 59.23 | 69.61 | 64.39 | 66.07 | 72.61 | 74.93 | 87.26 | 87.71 | 90.27 | 78.93 | b | 67.46 | b | 67.61 | 73.84 | |||||||||||
1964 | 61.90 | 65.44 | b | 64.64 | c | 68.27 | 73.60 | a | 81.38 | a | 92.65 | 88.77 | 86.33 | 85.77 | 68.10 | 62.45 | 74.94 | |||||||||
1965 | 66.26 | 67.68 | 65.52 | 71.57 | 74.90 | 75.27 | 89.00 | 93.42 | 82.73 | 86.87 | 68.77 | 62.84 | 75.40 | |||||||||||||
1966 | 63.29 | 63.59 | a | 72.23 | 76.03 | 77.37 | a | 84.90 | 92.03 | 92.68 | 89.37 | 82.23 | 71.03 | 65.10 | 77.49 | |||||||||||
1967 | 66.68 | 72.46 | 67.68 | 62.03 | 77.90 | 78.03 | 91.55 | 95.23 | 85.93 | 86.97 | 74.57 | 60.87 | 76.66 | |||||||||||||
1968 | 65.00 | 70.52 | 70.61 | 73.23 | 76.81 | 84.53 | 91.61 | 88.90 | 88.20 | 81.19 | 72.83 | a | 64.10 | 77.29 | ||||||||||||
1969 | 64.03 | 59.32 | 67.03 | 71.87 | 77.45 | 75.13 | ----- | z | 94.77 | 90.47 | 77.87 | 73.07 | 65.00 | 74.18 | a | |||||||||||
1970 | 64.74 | 69.07 | 67.60 | a | 70.13 | 79.10 | 83.36 | b | 94.26 | 94.73 | a | 90.97 | 79.72 | b | 67.87 | 59.71 | 76.77 | |||||||||
1971 | 66.47 | a | 67.04 | 72.68 | 72.27 | 71.35 | e | 85.59 | a | 93.10 | ----- | z | 90.07 | 78.81 | 69.83 | 57.80 | a | 75.00 | a | |||||||
1972 | 65.45 | 71.31 | 76.67 | a | 76.33 | 80.19 | 82.13 | 95.14 | b | 92.23 | a | 84.72 | a | 74.29 | ----- | z | 63.74 | 78.38 | a | |||||||
1973 | 60.61 | 63.82 | 59.52 | 71.17 | 79.97 | 88.70 | ----- | z | 92.40 | f | 85.82 | b | 83.50 | a | 67.66 | a | 67.65 | 72.84 | b | |||||||
1974 | 62.65 | 70.92 | c | 68.77 | 77.32 | b | 76.50 | a | 90.57 | 92.07 | d | 90.46 | c | 90.74 | c | 77.43 | a | 72.46 | b | 63.96 | c | 77.82 | ||||
1975 | 69.85 | e | 66.46 | b | 65.50 | c | 65.04 | c | 77.80 | a | 83.55 | a | 88.73 | a | 91.79 | b | 89.65 | g | 79.32 | f | 75.57 | b | 67.61 | 75.19 | b | |
1976 | 72.93 | c | 67.46 | a | 69.39 | 70.37 | c | 80.17 | a | 90.93 | c | 89.50 | a | 91.65 | 80.59 | a | 81.94 | 77.93 | b | 70.57 | a | 78.62 | ||||
1977 | 64.29 | 74.63 | a | 66.13 | 77.24 | a | 72.00 | 87.07 | 95.77 | 91.97 | 88.50 | 83.87 | a | 78.07 | a | 69.55 | 79.09 | |||||||||
1978 | 64.45 | 66.67 | a | 70.06 | 69.68 | b | 82.36 | c | 92.50 | b | 95.81 | 92.19 | 87.90 | 85.70 | a | 68.89 | c | 60.23 | 78.04 | |||||||
1979 | 59.19 | 64.78 | a | 66.37 | a | 74.80 | 79.28 | b | 91.33 | c | 93.20 | a | 89.94 | 96.56 | c | 78.86 | b | 71.79 | a | 70.87 | a | 78.08 | ||||
1980 | 63.57 | a | 69.25 | a | 67.81 | 74.73 | 70.81 | 88.60 | 96.48 | 92.10 | 88.72 | a | 85.11 | c | 75.90 | a | 72.07 | b | 78.76 | |||||||
1981 | 70.24 | b | 72.81 | b | 67.13 | 74.97 | 79.19 | 93.47 | 94.10 | 96.27 | a | 91.13 | 76.74 | 74.37 | 69.87 | 80.02 | ||||||||||
1982 | 61.97 | ----- | z | 65.65 | 73.73 | 73.71 | c | 76.90 | a | 91.77 | a | 93.16 | 87.52 | a | 82.84 | 67.38 | a | 63.48 | 76.19 | a | ||||||
1983 | 67.42 | 66.29 | 64.47 | a | 68.13 | 79.06 | 81.66 | a | 92.00 | a | 92.16 | 90.93 | 81.83 | b | 69.23 | 64.87 | a | 76.50 | ||||||||
1984 | 69.13 | 70.76 | ----- | z | 73.86 | b | 86.36 | c | 83.87 | 92.67 | a | 91.19 | 94.89 | c | 77.20 | a | 67.79 | a | 61.47 | a | 79.02 | a | ||||
1985 | 63.45 | 66.93 | a | 66.57 | c | 78.13 | 74.64 | c | 87.21 | a | 91.48 | b | 90.13 | a | 79.57 | b | 77.29 | c | 65.07 | b | 67.80 | a | 75.69 | |||
1986 | 71.84 | 66.85 | a | 68.53 | a | 72.50 | 76.64 | c | 83.69 | a | 86.37 | a | 90.60 | a | 77.83 | 76.89 | c | 73.55 | a | 66.00 | c | 75.94 | ||||
1987 | 63.73 | a | 64.20 | c | 64.30 | a | 77.46 | b | 74.93 | a | 81.53 | 82.04 | c | 85.14 | b | 86.66 | a | 80.28 | b | 68.67 | 60.86 | c | 74.15 | |||
1988 | 65.68 | c | 72.33 | e | 73.52 | b | 71.04 | f | 79.85 | e | 78.83 | a | 87.46 | c | 86.86 | b | 83.35 | d | 80.89 | c | 69.27 | h | 63.19 | e | 77.20 | b |
1989 | 64.54 | e | 64.23 | f | 72.18 | c | 78.14 | b | 75.23 | e | 81.46 | d | 89.64 | f | 85.23 | a | 89.48 | i | 79.23 | i | 76.00 | f | 71.04 | e | 75.40 | e |
1990 | 65.54 | c | 64.04 | e | 68.64 | f | 70.56 | e | 75.09 | h | 86.92 | d | 90.17 | g | 85.50 | e | 87.08 | d | ----- | z | 73.77 | d | 65.31 | e | 74.84 | d |
1991 | 64.93 | d | 73.12 | b | 61.31 | e | 70.48 | e | 73.35 | e | 76.63 | c | 82.71 | c | 86.30 | a | ----- | z | 83.28 | f | 75.19 | c | 64.17 | b | 72.82 | b |
1992 | 68.39 | h | 66.18 | a | ----- | z | 77.11 | c | 76.12 | f | ----- | z | 87.00 | d | 92.35 | h | 89.59 | a | 79.08 | g | ----- | z | 61.74 | h | 79.97 | h |
1993 | 61.90 | b | 60.52 | e | 70.64 | c | 75.46 | d | 78.74 | h | ----- | z | 82.03 | a | 86.54 | g | 87.23 | d | 79.27 | e | 71.81 | d | 67.14 | c | 72.89 | c |
1994 | 71.04 | g | 63.77 | f | 69.54 | e | 70.25 | f | 71.15 | e | 85.96 | e | 86.54 | c | ----- | z | 86.76 | a | ----- | z | 65.52 | a | 64.35 | 75.69 | e | |
1995 | 60.83 | a | 70.21 | d | 66.74 | 70.48 | c | 69.28 | b | 79.87 | 90.20 | a | 93.94 | 89.40 | 80.63 | a | 76.89 | b | 67.32 | 76.32 | ||||||
1996 | 67.00 | 65.48 | 69.23 | 78.19 | d | 79.21 | b | 85.42 | d | 90.96 | d | 91.14 | c | 84.04 | c | ----- | z | 72.18 | b | 66.90 | a | 77.25 | a | |||
1997 | 62.87 | 67.27 | f | ----- | z | ----- | z | 83.76 | b | 79.87 | 86.60 | a | 90.79 | b | 91.04 | d | 80.96 | c | 71.85 | c | 63.60 | a | 79.04 | c | ||
1998 | 63.12 | f | 59.79 | 66.41 | d | ----- | z | ----- | z | 77.63 | c | 91.07 | b | 94.38 | b | ----- | z | ----- | z | ----- | z | ----- | z | 77.85 | g | |
1999 | 68.10 | b | 66.59 | f | 64.50 | a | 69.24 | e | 74.30 | d | 81.92 | f | 88.40 | a | 89.73 | a | 83.95 | h | 88.15 | e | ----- | z | 69.37 | d | 76.47 | d |
2000 | 68.04 | d | 65.61 | a | 67.07 | d | 77.56 | e | 79.83 | h | 85.38 | a | 88.18 | c | 89.12 | e | 86.50 | d | 74.67 | g | 68.30 | c | 70.77 | i | 77.31 | c |
2001 | 61.56 | d | 62.50 | d | 68.19 | 67.77 | d | 78.95 | i | 85.37 | 85.54 | c | 89.88 | f | 87.88 | d | 81.14 | b | 70.54 | f | 62.75 | g | 74.99 | d | ||
2002 | 65.03 | a | 72.07 | 68.72 | f | 68.62 | i | 76.71 | c | 83.38 | f | 87.23 | a | 87.82 | c | 88.00 | j | 72.00 | g | 73.91 | g | 62.00 | e | 75.15 | f | |
2003 | 74.04 | f | 64.07 | a | 69.17 | a | 66.81 | c | 76.03 | b | 77.04 | c | 88.74 | h | 91.39 | 88.93 | b | 85.46 | g | 67.59 | c | 62.31 | r | 75.13 | d | |
2004 | 65.17 | a | 62.07 | 74.66 | b | 73.80 | 80.35 | 80.81 | n | 88.00 | b | 86.69 | e | 88.62 | f | 72.11 | m | 64.74 | k | 64.11 | v | 75.82 | e | |||
2005 | 64.71 | n | 60.36 | n | 67.59 | n | 73.67 | u | 78.81 | o | 82.10 | t | 92.88 | w | 91.33 | y | 88.00 | t | 76.27 | p | 81.50 | v | 70.86 | i | ----- | z |
2006 | 66.95 | i | 69.09 | q | 62.56 | o | 65.80 | o | 75.85 | r | 91.56 | u | 94.75 | o | 89.00 | s | 86.85 | q | 78.43 | x | 77.00 | x | 74.00 | y | ----- | z |
2007 | ----- | z | 66.05 | i | ----- | z | ----- | z | 77.26 | l | 84.00 | u | 90.00 | r | 93.18 | t | 84.20 | j | 79.91 | t | 72.75 | v | 61.26 | h | ----- | z |
2008 | 60.44 | m | 59.60 | x | ----- | z | 86.80 | y | 74.50 | g | 86.88 | n | 87.46 | r | 88.48 | h | 87.75 | f | 81.62 | r | 76.14 | p | 60.41 | n | ----- | z |
2009 | 69.32 | 62.96 | b | 68.16 | 71.76 | a | 77.74 | 76.83 | a | 90.61 | 88.94 | 90.17 | 79.26 | 73.93 | 61.26 | 75.91 | ||||||||||
2010 | 66.26 | 62.71 | 66.06 | 65.73 | 70.65 | 76.70 | 80.65 | 86.55 | 85.47 | 70.55 | 68.73 | 63.03 | 71.92 | |||||||||||||
2011 | 65.97 | 60.96 | 67.06 | 70.27 | 70.94 | 78.20 | 85.23 | 89.23 | 85.30 | 80.71 | 67.43 | 61.16 | 73.54 | |||||||||||||
2012 | 69.13 | 63.24 | 66.10 | 71.17 | 76.13 | 81.13 | 86.81 | 91.10 | 90.40 | 79.77 | 71.70 | 60.19 | 75.57 | |||||||||||||
2013 | 62.42 | 63.43 | 71.48 | 72.43 | 78.48 | 84.23 | 87.26 | 89.16 | 87.57 | 76.16 | 70.40 | 64.97 | 75.67 | |||||||||||||
2014 | 72.35 | 68.71 | 71.03 | 75.60 | 80.84 | 84.67 | 88.71 | 89.77 | 89.73 | 82.35 | 73.47 | 62.87 | 78.34 | |||||||||||||
2015 | 67.90 | 72.25 | 76.52 | 74.33 | 69.65 | 85.73 | 85.19 | 90.00 | 88.37 | 81.35 | 69.73 | 62.10 | 76.93 | |||||||||||||
2016 | 61.94 | 75.34 | 71.50 | a | 72.50 | 71.45 | 88.11 | b | 90.77 | 90.48 | 85.17 | 81.16 | 74.23 | 63.97 | a | 77.22 | ||||||||||
2017 | 60.71 | 64.89 | 74.52 | 76.17 | 74.16 | 85.53 | 89.52 | 89.58 | 83.83 | 83.65 | 74.10 | 71.06 | 77.31 | |||||||||||||
2018 | 70.90 | 66.50 | 67.62 | b | 75.23 | 73.45 | 83.87 | 92.77 | 91.13 | 87.80 | 78.00 | 71.83 | 63.55 | 76.89 | ||||||||||||
2019 | 63.52 | 57.86 | 65.23 | 72.67 | 67.16 | 80.37 | 88.90 | 91.65 | 85.20 | 81.58 | 73.27 | 61.52 | 74.08 | |||||||||||||
2020 | 64.58 | 67.55 | 62.06 | 69.60 | 79.77 | 82.00 | 89.87 | 93.32 | 92.87 | 84.68 | 71.45 | a | 65.74 | 76.96 | ||||||||||||
2021 | 65.00 | 66.04 | 64.58 | 73.07 | 74.97 | 85.33 | 89.77 | 89.16 | 86.50 | 75.03 | 75.73 | 60.10 | 75.44 | |||||||||||||
2022 | 66.10 | 67.86 | 71.10 | 74.27 | 76.84 | 88.63 | 88.81 | 92.29 | 89.33 | 77.97 | 65.83 | 61.45 | 76.71 | |||||||||||||
2023 | 58.39 | 60.14 | 60.35 | 71.50 | 69.00 | 75.03 | 92.23 | 89.90 | 80.10 | 80.94 | 72.23 | 66.13 | 73.00 | |||||||||||||
2024 | 61.45 | 60.21 | 61.30 | u | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 60.83 | j | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 64.94 | 66.35 | 67.89 | 72.50 | 76.00 | 83.42 | 89.99 | 90.69 | 88.08 | 80.63 | 71.58 | 65.05 | 76.54 | |||||||||||||
S.D. | 3.66 | 4.29 | 4.02 | 3.67 | 4.02 | 4.67 | 3.63 | 2.53 | 3.84 | 3.63 | 3.48 | 3.59 | 1.81 | |||||||||||||
SKEW | 0.25 | 0.01 | 0.03 | -0.46 | 0.11 | -0.04 | -0.40 | -0.17 | -0.22 | -0.08 | 0.18 | 0.41 | -0.50 | |||||||||||||
MAX | 72.93 | 75.34 | 76.67 | 78.19 | 86.36 | 93.47 | 96.48 | 96.27 | 96.56 | 88.15 | 79.37 | 74.67 | 80.02 | |||||||||||||
MIN | 57.75 | 56.61 | 59.35 | 62.03 | 67.16 | 74.93 | 80.65 | 85.14 | 77.83 | 70.55 | 65.07 | 57.80 | 71.92 | |||||||||||||
YRS | 65 | 64 | 63 | 63 | 62 | 63 | 63 | 62 | 61 | 56 | 59 | 63 | 44 |