YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1939 | ----- | z | ----- | z | ----- | z | ----- | z | 74.77 | a | 80.93 | 85.68 | 88.45 | 90.28 | a | 82.45 | 77.03 | 74.19 | 81.72 | d | ||||||
1940 | 65.90 | 66.83 | 70.55 | 73.07 | 78.55 | 79.30 | 87.03 | 88.32 | 86.90 | 83.29 | 74.90 | 70.61 | 77.10 | |||||||||||||
1941 | ----- | z | ----- | z | 71.68 | ----- | z | 83.65 | 83.34 | a | 91.61 | 89.00 | 85.03 | 79.55 | 77.73 | 64.97 | 80.73 | c | ||||||||
1942 | 69.00 | 66.29 | 71.74 | 70.37 | 78.81 | 80.66 | a | 89.97 | 87.10 | 83.00 | 79.90 | 75.13 | 69.23 | 76.77 | ||||||||||||
1943 | ----- | z | ----- | z | ----- | z | 73.93 | 79.77 | 82.70 | 88.42 | 88.68 | 89.53 | 81.13 | 78.57 | 66.03 | 80.97 | c | |||||||||
1944 | 66.71 | 63.28 | 71.00 | 71.23 | 75.61 | 79.14 | a | 85.53 | a | 93.07 | a | 86.63 | 80.65 | 69.17 | 70.65 | 76.06 | ||||||||||
1945 | 67.81 | 65.86 | 65.87 | 73.93 | 76.87 | 78.67 | 85.97 | 89.81 | 87.40 | 78.68 | 74.50 | 67.16 | 76.04 | |||||||||||||
1946 | 69.26 | 66.82 | 69.48 | 73.90 | 71.68 | 84.30 | 88.26 | 89.71 | 89.83 | 76.90 | 68.70 | 64.23 | 76.09 | |||||||||||||
1947 | 68.00 | 72.32 | 72.16 | 75.13 | 77.30 | a | 80.67 | 91.90 | 88.06 | 89.00 | 80.13 | 72.00 | 68.23 | 77.91 | ||||||||||||
1948 | 72.23 | 66.96 | a | 67.71 | 73.38 | a | 76.97 | 79.10 | a | 86.45 | b | 87.52 | 88.27 | 79.39 | 77.40 | 66.55 | 76.83 | |||||||||
1949 | 57.45 | 64.14 | 66.87 | 76.50 | 76.87 | 83.50 | 86.71 | 89.81 | 90.37 | 80.58 | 83.23 | 69.58 | 77.13 | |||||||||||||
1950 | 62.26 | 70.21 | 71.66 | b | 75.47 | 73.90 | 82.53 | 87.37 | a | 87.58 | 83.33 | 85.13 | 78.20 | 76.52 | 77.85 | |||||||||||
1951 | 68.55 | 69.39 | 73.35 | 71.55 | a | 78.26 | 79.40 | 88.81 | 87.35 | 86.73 | 82.84 | 73.43 | 64.68 | 77.03 | ||||||||||||
1952 | 62.42 | 68.52 | 63.74 | 71.33 | 80.48 | 77.33 | 89.10 | 90.77 | 90.30 | 81.55 | 70.97 | 66.29 | 76.07 | |||||||||||||
1953 | 72.37 | a | 72.18 | 71.81 | 69.57 | 76.06 | 80.23 | 91.29 | 86.97 | 86.43 | 84.39 | 76.97 | 72.55 | 78.40 | ||||||||||||
1954 | 66.26 | 77.82 | 66.03 | a | 71.33 | 76.03 | 79.83 | 91.68 | 85.45 | 88.67 | 80.71 | 77.37 | 69.84 | 77.59 | ||||||||||||
1955 | 63.90 | 68.36 | 73.23 | a | 74.03 | 74.29 | 79.85 | c | 85.23 | 91.97 | a | 90.17 | 78.72 | b | 74.27 | 64.00 | 76.50 | |||||||||
1956 | 66.77 | 64.21 | 74.63 | a | 70.28 | a | 76.10 | 84.52 | a | 87.26 | 85.83 | a | 92.67 | 77.60 | a | 83.46 | b | 75.43 | a | 78.23 | ||||||
1957 | 63.50 | a | 69.86 | 71.94 | 72.33 | 74.74 | 87.27 | 91.86 | b | 91.48 | 86.87 | 76.97 | 71.04 | b | 74.26 | 77.68 | ||||||||||
1958 | 71.00 | 69.29 | 66.20 | a | 76.67 | 80.87 | 84.20 | 88.55 | 90.77 | 93.53 | 87.97 | a | 76.27 | 77.23 | 80.21 | |||||||||||
1959 | 72.97 | b | 66.63 | a | 79.83 | a | 80.00 | 76.33 | a | 86.04 | b | 93.06 | 90.43 | a | 86.69 | a | 84.40 | a | 82.73 | 72.77 | 80.99 | |||||
1960 | 65.74 | 68.03 | 74.27 | a | 79.83 | 81.36 | c | 86.11 | c | 92.41 | b | 89.16 | 93.10 | 82.80 | a | 73.70 | 73.97 | 80.04 | ||||||||
1961 | 78.03 | 74.93 | 72.17 | b | 77.53 | 75.47 | a | 83.97 | 88.83 | a | 89.73 | a | 85.36 | b | 82.40 | a | 72.20 | 68.71 | 79.11 | |||||||
1962 | 68.23 | e | 61.09 | e | 67.07 | a | 80.07 | a | 75.27 | a | 80.21 | b | 85.84 | 91.13 | 87.07 | b | 80.83 | b | 73.87 | 69.81 | 76.71 | |||||
1963 | 66.00 | 74.71 | 70.84 | 71.53 | 74.52 | 77.53 | 86.94 | 88.77 | 92.23 | 81.16 | 74.17 | 74.35 | 77.73 | |||||||||||||
1964 | 68.23 | 72.38 | 70.97 | 72.93 | a | 75.19 | 79.47 | 89.10 | a | 87.89 | c | 85.97 | a | 85.13 | a | 71.79 | a | 65.58 | 77.05 | |||||||
1965 | 71.00 | d | 70.36 | 69.20 | a | 73.63 | 76.15 | d | 74.17 | 85.90 | a | 90.16 | 81.33 | 87.03 | 70.14 | a | 66.87 | 76.33 | ||||||||
1966 | 67.55 | 67.42 | b | 73.13 | 78.11 | c | 75.61 | 83.10 | 88.87 | a | 90.28 | b | 87.59 | a | 84.27 | a | 72.69 | a | 69.30 | a | 78.16 | |||||
1967 | 69.61 | 75.46 | 70.29 | 65.80 | 78.80 | a | 77.43 | 89.47 | a | 92.77 | 86.10 | a | 87.16 | 76.17 | 65.90 | 77.91 | ||||||||||
1968 | 69.47 | a | 73.62 | 75.13 | a | 76.83 | 77.29 | 81.69 | a | 88.97 | 86.80 | a | 87.77 | 80.26 | 75.30 | 66.53 | a | 78.30 | ||||||||
1969 | 65.81 | 62.93 | a | 71.29 | 74.40 | 77.61 | 75.61 | b | 88.19 | 93.23 | 86.83 | 80.07 | a | 77.03 | 68.97 | b | 76.83 | |||||||||
1970 | 66.35 | 72.79 | 72.32 | 73.87 | 79.74 | 81.70 | 89.71 | 90.90 | a | 89.20 | 79.20 | a | 72.70 | 65.84 | 77.86 | |||||||||||
1971 | 69.61 | 69.86 | 72.35 | 73.52 | a | 73.39 | 81.40 | 89.80 | a | 92.67 | a | 89.47 | 81.71 | 71.34 | a | 61.71 | 77.24 | |||||||||
1972 | 68.29 | 72.03 | 75.29 | 76.14 | a | 79.19 | 83.27 | 91.07 | a | 90.06 | 85.07 | a | 77.55 | 72.20 | 67.81 | 78.16 | ||||||||||
1973 | ----- | z | 67.43 | 65.90 | 73.73 | 79.45 | 85.97 | 87.03 | 87.83 | a | 82.83 | 84.35 | 70.43 | 71.00 | 77.82 | a | ||||||||||
1974 | 64.36 | c | 73.61 | 69.74 | 78.30 | 76.48 | 85.93 | 89.48 | 87.48 | 88.69 | a | 79.00 | 76.23 | 67.84 | 78.10 | |||||||||||
1975 | 71.07 | a | 67.46 | b | 67.84 | 67.72 | a | 75.94 | 78.55 | a | 87.16 | 87.03 | 88.20 | 79.74 | 75.20 | 71.48 | 76.45 | |||||||||
1976 | 76.32 | 69.38 | 72.23 | 70.90 | a | 78.45 | 87.17 | 86.43 | a | 88.23 | a | 83.87 | 84.71 | 81.03 | a | 75.87 | 79.55 | |||||||||
1977 | 69.00 | 78.39 | 70.68 | 77.00 | 72.87 | 83.10 | 90.26 | 88.94 | 85.50 | 84.00 | 80.60 | 71.00 | 79.28 | |||||||||||||
1978 | 67.71 | 69.59 | a | 73.58 | 71.80 | 83.33 | a | 87.93 | 90.65 | 89.13 | 89.67 | 84.65 | 72.03 | 67.13 | 78.93 | |||||||||||
1979 | 64.19 | 69.00 | 70.52 | 76.80 | 79.03 | 87.80 | 88.90 | 87.93 | a | 94.60 | 77.36 | i | 75.23 | 74.71 | 78.97 | a | ||||||||||
1980 | 68.00 | 74.21 | a | 71.43 | a | 76.60 | 72.68 | 83.73 | 91.19 | 88.86 | b | 85.00 | 84.52 | 76.80 | 75.68 | 79.06 | ||||||||||
1981 | 71.41 | b | 75.29 | 69.30 | d | 77.33 | 78.94 | 91.93 | 91.81 | 93.61 | 88.43 | 80.63 | a | 76.07 | a | 72.83 | a | 80.63 | ||||||||
1982 | 67.83 | b | 71.57 | 70.35 | 74.76 | a | 75.53 | a | 76.62 | a | 89.70 | a | 92.23 | a | 86.65 | d | 85.53 | a | 73.55 | a | 68.07 | d | 77.70 | |||
1983 | 72.16 | 70.76 | c | 69.37 | a | 71.43 | b | 79.61 | c | 80.17 | 89.31 | b | 93.48 | 90.30 | c | 85.31 | b | 73.83 | 68.55 | 78.69 | ||||||
1984 | 73.55 | 75.64 | a | 76.97 | a | 77.64 | b | 86.37 | d | 83.47 | 92.90 | a | 91.74 | 96.76 | e | 80.73 | a | 72.03 | 65.72 | b | 81.13 | |||||
1985 | 68.08 | e | 72.04 | b | 70.23 | a | 79.32 | b | 77.34 | b | 87.03 | a | 92.18 | c | 91.45 | 83.46 | b | 84.39 | c | 70.80 | e | 74.52 | b | 79.24 | ||
1986 | 75.89 | d | 71.00 | 73.68 | c | 77.15 | c | 80.79 | c | 85.50 | 88.70 | a | 92.90 | 81.97 | a | 82.57 | c | 79.48 | a | 71.89 | c | 80.13 | ||||
1987 | 69.17 | b | 71.73 | b | 72.64 | c | 82.48 | c | 79.90 | b | 83.43 | b | 85.13 | a | 87.97 | 90.61 | b | 83.89 | d | 75.11 | b | 65.96 | d | 79.00 | ||
1988 | 71.07 | b | 77.43 | a | 79.40 | a | 77.18 | b | 82.14 | c | 82.43 | b | 89.29 | 87.67 | a | 86.50 | b | 83.11 | d | 73.40 | 68.04 | d | 79.80 | |||
1989 | 69.17 | b | 69.07 | 75.29 | 80.64 | b | 77.84 | 82.37 | 89.45 | b | 86.93 | d | 90.03 | 82.30 | a | 79.75 | b | 75.37 | a | 79.85 | ||||||
1990 | 72.14 | b | 70.44 | a | 73.70 | a | 77.67 | f | 78.46 | c | 90.00 | d | 92.93 | b | 88.19 | e | 90.55 | a | 88.39 | 78.87 | 70.39 | 81.28 | a | |||
1991 | 70.67 | a | 78.56 | a | 68.10 | 77.73 | 77.89 | d | 81.07 | a | 85.40 | a | 88.83 | b | 91.12 | n | 87.34 | b | 80.21 | a | 70.72 | b | 78.77 | a | ||
1992 | 74.03 | b | 73.08 | c | 69.74 | 81.90 | 80.32 | 84.41 | a | 89.21 | b | 94.90 | a | 92.07 | 83.34 | b | 78.15 | d | 67.00 | b | 80.68 | |||||
1993 | 66.17 | b | 68.12 | b | 76.67 | d | 80.34 | a | 81.60 | a | 87.00 | 84.77 | 89.29 | 90.14 | a | 84.33 | d | 75.93 | a | 72.68 | 79.75 | |||||
1994 | 75.68 | 69.39 | 76.48 | b | 76.12 | d | 75.57 | c | 88.71 | b | 86.97 | a | 94.65 | 90.67 | 82.61 | h | 70.41 | a | 68.96 | e | 79.42 | a | ||||
1995 | 64.83 | a | 76.62 | d | 71.97 | 77.44 | c | 73.97 | 82.46 | b | 90.52 | 93.75 | c | 92.54 | d | 85.79 | b | 79.57 | 70.03 | 79.96 | ||||||
1996 | 72.04 | c | 70.79 | 74.15 | d | 82.59 | a | 80.72 | b | 86.11 | b | 90.75 | c | 92.69 | b | 87.15 | c | 81.14 | c | 76.64 | b | 71.32 | 80.51 | |||
1997 | 68.28 | b | 72.75 | 80.53 | a | 78.04 | b | 86.30 | a | 83.17 | f | 86.87 | h | 92.43 | a | 94.04 | b | 85.12 | f | 76.48 | c | 71.44 | d | 80.03 | c | |
1998 | 68.88 | e | 65.96 | d | 72.52 | b | 75.56 | c | 73.32 | c | 78.93 | c | 90.90 | b | 95.19 | j | 83.33 | c | 81.60 | f | 74.57 | b | 73.44 | f | 76.00 | c |
1999 | 72.48 | b | 71.46 | b | 69.37 | a | 72.88 | d | 77.08 | e | 82.19 | d | 88.23 | a | 89.35 | e | 86.80 | 92.04 | d | 77.59 | h | 75.10 | b | 79.73 | a | |
2000 | 71.45 | 68.70 | b | 72.52 | 79.81 | c | 82.15 | d | 87.18 | b | 88.72 | b | 90.41 | d | 89.93 | a | 78.15 | d | 73.27 | d | 74.74 | d | 79.75 | |||
2001 | 68.56 | d | 65.43 | 72.10 | j | 73.27 | d | 82.25 | c | 86.57 | 86.21 | c | 89.94 | 89.27 | 81.37 | a | 75.12 | e | 68.42 | g | 79.80 | b | ||||
2002 | 70.15 | d | 76.52 | c | 72.11 | l | 73.03 | a | 77.30 | k | 83.57 | 88.61 | c | 88.04 | d | 90.46 | b | 79.00 | l | 79.65 | d | 67.21 | g | 81.25 | d | |
2003 | 77.70 | d | 70.56 | c | 78.41 | b | 76.71 | b | 81.75 | c | 79.85 | c | 91.96 | g | 94.97 | b | 92.37 | 91.10 | b | 77.19 | c | 73.24 | f | 82.06 | b | |
2004 | 74.04 | c | 68.96 | d | 83.94 | n | 79.43 | b | 87.30 | k | 82.79 | k | 89.42 | g | 88.60 | k | 90.21 | f | 74.74 | 69.13 | 61.88 | n | 73.26 | g | ||
2005 | 66.69 | b | 65.78 | a | 69.45 | 73.38 | a | 77.93 | b | 79.60 | t | 85.72 | f | 85.87 | a | 82.63 | 77.12 | e | 76.63 | 69.52 | 74.50 | b | ||||
2006 | 69.23 | 71.86 | 63.14 | b | 67.71 | b | 75.42 | 89.25 | r | 91.58 | 85.90 | 85.27 | 77.53 | a | 76.33 | 70.35 | 75.85 | a | ||||||||
2007 | 64.45 | i | 68.21 | 73.68 | 71.10 | 74.77 | 80.57 | 86.16 | 87.92 | e | 83.13 | 80.29 | 73.40 | 65.90 | 76.83 | a | ||||||||||
2008 | 64.26 | 67.72 | 73.19 | 75.73 | 74.71 | 84.40 | 85.90 | 87.65 | 86.10 | 85.81 | 78.43 | 65.26 | 77.43 | |||||||||||||
2009 | 73.90 | 67.07 | 69.87 | 72.47 | 77.26 | 75.60 | 87.84 | 87.19 | 88.10 | a | 78.68 | 76.20 | 65.29 | 76.62 | ||||||||||||
2010 | 69.03 | 67.75 | 70.94 | 68.72 | a | 73.32 | 77.50 | 81.62 | b | 85.00 | ----- | z | ----- | z | ----- | z | ----- | z | 74.24 | d | ||||||
2011 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2012 | ----- | z | ----- | z | 68.58 | 73.87 | g | 76.32 | 79.20 | 83.23 | 90.35 | 90.57 | 81.74 | 74.23 | 64.39 | 78.73 | c | |||||||||
2013 | 68.26 | 67.75 | 72.94 | 74.00 | 78.32 | 80.77 | 83.74 | 86.23 | 86.60 | 78.71 | 74.90 | 71.29 | 76.96 | |||||||||||||
2014 | 75.84 | 71.21 | 73.87 | 76.40 | 81.39 | 81.43 | 86.68 | 87.65 | 89.03 | a | 84.34 | b | 77.33 | 68.63 | d | 79.48 | ||||||||||
2015 | 73.58 | 75.64 | 78.72 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 75.98 | i | ||
2016 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2017 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2018 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2019 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2020 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2021 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2022 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 69.24 | 70.26 | 71.71 | 74.98 | 77.74 | 82.39 | 88.54 | 89.54 | 88.09 | 82.23 | 75.35 | 69.70 | 78.27 | |||||||||||||
S.D. | 3.86 | 3.85 | 3.56 | 3.64 | 3.11 | 3.64 | 2.50 | 2.44 | 3.24 | 3.42 | 3.36 | 3.66 | 1.46 | |||||||||||||
SKEW | -0.05 | 0.17 | 0.17 | -0.07 | 0.54 | 0.15 | -0.26 | 0.42 | 0.12 | 0.43 | 0.23 | 0.18 | 0.23 | |||||||||||||
MAX | 78.03 | 78.56 | 80.53 | 82.59 | 86.37 | 91.93 | 93.06 | 94.97 | 96.76 | 92.04 | 83.46 | 77.23 | 81.13 | |||||||||||||
MIN | 57.45 | 61.09 | 63.14 | 65.80 | 71.68 | 74.17 | 81.62 | 85.00 | 81.33 | 74.74 | 68.70 | 61.71 | 76.04 | |||||||||||||
YRS | 70 | 72 | 71 | 71 | 73 | 71 | 71 | 73 | 72 | 69 | 73 | 69 | 55 |