YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1939 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 74.74 | 77.26 | 81.20 | 77.58 | 72.20 | 70.58 | 75.59 | f | ||||||
1940 | 65.55 | 66.00 | 68.90 | 70.47 | 70.94 | 70.53 | 75.35 | 75.10 | 75.80 | 74.61 | 71.57 | 69.90 | 71.23 | |||||||||||||
1941 | 65.61 | 67.54 | 70.26 | 68.50 | 75.35 | 73.10 | 76.42 | 77.55 | 75.77 | 74.45 | 74.77 | 66.35 | 72.14 | |||||||||||||
1942 | 68.29 | 65.32 | 67.97 | 67.33 | 70.61 | 70.57 | 76.55 | 76.65 | 74.90 | 74.39 | 70.90 | 67.16 | 70.89 | |||||||||||||
1943 | 66.26 | 69.75 | 67.32 | 68.53 | 73.10 | 72.80 | 76.42 | 78.10 | 76.27 | 73.35 | 73.83 | 66.74 | 71.87 | |||||||||||||
1944 | 66.71 | 63.34 | 69.13 | 67.30 | 69.52 | 70.57 | 73.26 | 77.16 | 73.40 | 71.35 | 68.17 | 69.39 | 69.94 | |||||||||||||
1945 | 64.81 | 65.46 | 64.23 | 66.47 | 69.32 | 70.20 | 74.94 | 78.23 | 79.13 | 74.55 | 70.53 | 66.06 | 70.33 | |||||||||||||
1946 | 66.58 | 64.25 | 65.19 | 69.70 | 69.19 | 75.07 | 77.33 | a | 79.29 | 78.43 | 73.19 | 67.20 | 65.16 | 70.88 | ||||||||||||
1947 | 64.90 | 68.04 | 69.39 | 71.11 | c | 70.42 | 73.10 | 78.19 | 78.26 | 78.93 | 74.61 | 67.47 | 65.61 | 71.67 | ||||||||||||
1948 | 66.61 | 63.00 | 64.52 | 69.73 | 70.16 | 70.73 | 73.90 | 74.74 | 76.30 | 70.90 | 71.73 | 62.68 | 69.58 | |||||||||||||
1949 | 56.13 | 60.93 | 64.06 | 68.77 | 69.84 | 73.40 | 75.39 | 77.16 | 77.10 | 73.06 | 75.90 | 64.74 | 69.71 | |||||||||||||
1950 | 60.35 | 63.79 | 65.97 | 67.47 | 66.87 | 70.10 | 75.45 | 74.42 | 73.37 | 74.97 | 71.43 | 69.16 | 69.45 | |||||||||||||
1951 | 64.48 | 64.29 | 67.45 | 66.33 | 68.26 | 70.77 | 75.23 | 74.87 | 74.20 | 74.68 | 70.17 | 63.23 | 69.50 | |||||||||||||
1952 | 62.42 | 66.69 | 63.19 | 65.77 | 70.45 | 69.20 | 74.77 | 76.65 | 77.97 | 71.35 | 68.10 | 65.48 | 69.34 | |||||||||||||
1953 | 69.84 | 68.11 | 65.90 | 64.63 | 70.55 | 70.60 | 76.35 | 75.52 | 74.83 | 76.55 | 72.53 | 69.00 | 71.20 | |||||||||||||
1954 | 63.16 | 72.07 | 64.03 | 66.80 | 68.42 | 70.33 | 77.97 | 76.74 | 76.73 | 71.52 | 73.10 | 68.19 | 70.76 | |||||||||||||
1955 | 62.32 | 65.29 | 68.00 | 67.63 | 67.52 | 70.27 | 73.48 | 78.87 | 78.23 | 69.16 | 68.37 | 63.94 | 69.42 | |||||||||||||
1956 | 62.52 | 61.69 | 66.65 | 64.40 | 70.94 | 72.27 | 75.10 | 75.42 | 80.60 | 72.55 | 76.50 | 71.42 | 70.84 | |||||||||||||
1957 | 62.97 | 67.04 | 67.06 | 67.17 | 68.58 | 74.60 | 77.71 | 79.65 | 76.47 | 72.23 | 69.80 | 71.19 | 71.20 | |||||||||||||
1958 | 69.35 | 67.71 | 65.00 | 71.87 | 72.35 | 73.60 | 75.77 | 78.42 | 80.47 | 79.03 | 71.43 | 72.55 | 73.13 | |||||||||||||
1959 | 68.65 | 65.00 | 72.10 | 70.77 | 69.61 | 73.67 | 79.42 | 79.16 | 76.93 | 74.71 | 75.90 | 69.26 | 72.93 | |||||||||||||
1960 | 63.45 | 64.62 | 67.65 | 71.17 | 71.74 | 72.63 | 78.26 | 77.61 | 79.73 | 73.87 | 68.80 | 66.68 | 71.35 | |||||||||||||
1961 | 71.10 | 68.29 | 66.03 | 69.60 | 67.13 | 70.40 | 75.39 | 78.71 | 77.17 | 75.42 | 69.20 | 64.48 | 71.08 | |||||||||||||
1962 | 67.00 | 62.86 | 63.61 | 69.50 | 68.65 | 69.23 | 74.16 | 77.23 | 74.87 | 71.84 | 67.50 | 64.90 | 69.28 | |||||||||||||
1963 | 63.84 | 69.79 | 65.87 | 66.53 | 69.42 | 70.50 | 74.29 | 78.68 | 82.33 | 75.58 | 70.30 | 70.87 | 71.50 | |||||||||||||
1964 | 65.32 | 67.97 | 65.90 | 67.40 | 66.94 | 69.30 | 75.55 | 76.06 | 74.23 | 76.52 | 68.93 | 62.81 | 69.74 | |||||||||||||
1965 | 65.84 | 65.32 | 66.35 | 68.40 | 68.10 | 68.23 | 73.19 | 77.74 | 74.97 | 79.61 | 67.27 | 63.68 | 69.89 | |||||||||||||
1966 | 63.45 | 63.32 | 65.13 | 67.33 | 67.52 | 70.93 | 74.42 | 77.94 | 75.93 | 75.45 | 69.20 | 65.71 | 69.69 | |||||||||||||
1967 | 64.55 | 68.18 | 65.35 | 63.13 | 70.00 | 68.83 | 75.84 | 78.68 | 76.90 | 76.68 | 70.43 | 64.06 | 70.22 | |||||||||||||
1968 | 66.45 | 67.62 | 68.26 | 69.33 | 69.13 | 70.80 | 77.10 | 77.90 | 77.50 | 74.10 | 69.93 | 64.23 | 71.03 | |||||||||||||
1969 | 64.42 | 61.14 | 64.45 | 67.73 | 67.48 | 69.10 | 74.32 | 78.81 | 75.17 | 72.74 | 73.40 | 66.74 | 69.63 | |||||||||||||
1970 | 63.71 | 67.82 | 66.77 | 66.47 | 68.94 | 69.60 | 75.26 | 77.52 | 76.33 | 72.32 | 67.97 | 61.81 | 69.54 | |||||||||||||
1971 | 61.81 | 61.50 | 64.68 | 67.77 | 66.35 | 69.90 | 74.58 | 81.16 | 78.00 | 74.26 | 67.17 | 61.71 | 69.07 | |||||||||||||
1972 | 64.06 | 65.93 | 65.52 | 69.07 | 70.03 | 71.43 | 78.71 | 77.68 | 73.97 | 72.03 | 67.97 | 66.03 | 70.20 | |||||||||||||
1973 | 63.87 | 67.32 | 64.10 | 67.83 | 68.03 | 73.43 | 74.29 | 75.45 | 74.33 | 74.68 | 67.27 | 67.03 | 69.80 | |||||||||||||
1974 | 63.90 | 67.89 | 64.77 | 69.03 | 68.06 | 72.23 | 76.48 | 74.94 | 75.10 | 72.45 | 70.97 | 65.71 | 70.13 | |||||||||||||
1975 | 65.87 | 63.71 | 63.65 | 64.13 | 67.16 | 69.73 | 74.39 | 74.19 | 77.50 | 72.45 | 69.47 | 65.77 | 69.00 | |||||||||||||
1976 | 69.94 | 66.52 | 67.77 | 66.67 | 69.90 | 75.57 | 74.94 | 77.94 | 77.90 | 77.81 | 76.50 | 71.26 | 72.72 | |||||||||||||
1977 | 68.13 | 71.32 | 64.81 | 67.17 | 66.29 | 69.67 | 76.94 | 76.97 | 76.67 | 74.23 | 73.63 | 68.90 | 71.23 | |||||||||||||
1978 | 66.97 | 67.29 | 70.29 | 68.57 | 74.52 | 77.30 | 76.74 | 77.52 | 80.40 | 75.03 | 68.30 | 63.94 | 72.24 | |||||||||||||
1979 | 62.87 | 64.18 | 66.42 | 69.53 | 70.35 | 76.43 | 76.90 | 78.77 | 82.63 | 74.32 | 71.43 | 71.16 | 72.08 | |||||||||||||
1980 | 67.26 | 70.69 | 68.16 | 70.23 | 67.55 | 74.40 | 78.42 | 78.61 | 74.63 | 74.10 | 71.87 | 70.58 | 72.21 | |||||||||||||
1981 | 68.32 | 70.82 | 66.61 | 69.17 | 71.35 | 78.03 | 81.06 | 81.13 | 78.67 | 72.74 | 70.67 | 68.39 | 73.08 | |||||||||||||
1982 | 63.87 | 67.32 | 67.19 | 69.87 | 69.81 | 70.40 | 77.06 | 78.26 | 78.87 | 78.84 | 70.43 | 65.74 | 71.47 | |||||||||||||
1983 | 69.39 | 67.18 | 67.16 | 68.77 | 71.13 | 71.93 | 77.77 | 82.77 | 82.07 | 77.90 | 70.57 | 67.16 | 72.82 | |||||||||||||
1984 | 69.61 | 68.59 | 70.48 | 70.13 | 73.13 | 73.73 | 81.77 | 80.19 | 83.73 | 73.84 | 67.53 | 62.94 | 72.97 | |||||||||||||
1985 | 64.74 | 64.75 | 64.81 | 69.33 | 68.48 | 73.87 | 80.39 | 77.77 | 75.73 | 74.23 | 66.40 | 68.16 | 70.72 | |||||||||||||
1986 | 70.26 | 65.71 | 66.94 | 69.60 | 69.90 | 72.23 | 74.87 | 77.45 | 71.93 | 71.77 | 72.03 | 66.65 | 70.78 | |||||||||||||
1987 | 64.06 | 66.07 | 66.23 | 70.17 | 69.00 | 70.00 | 71.58 | 74.61 | 75.40 | 75.58 | 69.70 | 62.03 | 69.54 | |||||||||||||
1988 | 65.71 | 69.41 | 70.13 | 69.23 | 69.71 | 69.67 | 75.03 | 75.77 | 76.00 | 71.48 | 67.30 | 64.45 | 70.33 | |||||||||||||
1989 | 64.55 | 63.89 | 66.29 | 72.07 | 68.74 | 70.80 | 75.26 | 75.65 | 77.37 | 72.52 | 72.77 | 69.87 | 70.81 | |||||||||||||
1990 | 66.19 | 63.29 | 64.94 | 68.27 | 69.35 | 74.90 | 77.94 | 76.39 | 77.37 | 76.94 | 72.17 | 65.74 | 71.12 | |||||||||||||
1991 | 65.61 | 67.36 | 62.90 | 67.93 | 67.58 | 68.83 | 71.84 | 73.90 | 74.70 | 74.52 | 72.20 | 65.42 | 69.40 | |||||||||||||
1992 | 68.03 | 68.83 | 65.71 | 73.43 | 72.35 | 73.30 | 76.90 | 80.35 | 79.07 | 74.13 | 73.13 | 63.81 | 72.42 | |||||||||||||
1993 | 63.61 | 64.25 | 68.23 | 70.40 | 71.55 | 73.90 | 74.00 | 75.06 | 74.87 | 74.03 | 70.63 | 66.81 | 70.61 | |||||||||||||
1994 | 68.35 | 64.00 | 66.94 | 66.27 | 66.52 | 73.83 | 74.10 | 79.90 | 78.73 | 74.03 | 65.73 | 63.94 | 70.20 | |||||||||||||
1995 | 62.71 | 68.14 | 66.77 | 68.50 | 66.84 | 69.87 | 74.90 | 78.48 | 77.37 | 73.00 | 70.40 | 65.52 | 70.21 | |||||||||||||
1996 | 65.39 | 64.17 | 66.13 | 71.63 | 71.16 | 72.30 | 74.39 | 77.68 | 74.63 | 69.52 | 68.97 | 65.10 | 70.09 | |||||||||||||
1997 | 64.23 | 66.43 | 68.97 | 67.93 | 73.48 | 70.80 | 73.48 | 77.68 | 81.23 | 75.65 | 71.23 | 66.42 | 71.46 | |||||||||||||
1998 | 64.13 | 62.86 | 65.00 | 65.43 | 67.00 | 69.70 | 73.23 | 77.87 | 74.33 | 71.65 | 66.57 | 63.81 | 68.46 | |||||||||||||
1999 | 65.23 | 64.86 | 63.58 | 64.63 | 64.35 | 66.93 | 72.68 | 72.71 | 71.37 | 77.71 | 67.37 | 67.61 | 68.25 | |||||||||||||
2000 | 65.84 | 65.31 | 63.71 | 67.70 | 69.10 | 72.43 | 73.45 | 76.32 | 75.50 | 69.55 | 65.97 | 66.87 | 69.31 | |||||||||||||
2001 | 62.23 | 61.68 | 63.68 | 63.63 | 67.45 | 71.97 | 73.00 | 73.55 | 73.23 | 71.10 | 66.90 | 63.32 | 67.64 | |||||||||||||
2002 | 63.00 | 66.21 | 63.61 | 63.67 | 66.06 | 68.67 | 71.81 | 73.35 | 75.47 | 68.42 | 71.43 | 63.68 | 67.95 | |||||||||||||
2003 | 71.35 | 64.61 | 66.55 | 65.23 | 66.87 | 67.43 | 74.32 | 77.48 | 73.97 | 73.10 | 67.40 | 64.65 | 69.41 | |||||||||||||
2004 | 63.77 | 63.69 | 68.42 | 69.47 | 73.74 | 71.03 | 76.45 | 74.84 | 78.13 | 69.71 | 67.00 | 65.13 | 70.12 | |||||||||||||
2005 | 65.87 | 65.50 | 66.26 | 67.90 | 70.19 | 70.33 | 74.39 | 75.61 | 74.13 | 71.29 | 70.53 | 65.45 | 69.79 | |||||||||||||
2006 | 65.19 | 66.04 | 62.58 | 67.30 | 68.68 | 75.70 | 81.16 | 77.45 | 75.60 | 71.81 | 70.63 | 65.45 | 70.63 | |||||||||||||
2007 | 62.29 | 64.39 | 66.55 | 64.37 | 67.29 | 69.60 | 74.03 | 77.77 | 74.60 | 73.55 | 66.80 | 61.61 | 68.57 | |||||||||||||
2008 | 61.06 | 62.90 | 65.87 | 68.53 | 68.55 | 72.23 | 73.68 | 76.39 | 75.90 | 78.13 | 72.77 | 62.87 | 69.91 | |||||||||||||
2009 | 69.39 | 65.32 | 65.55 | 68.43 | 67.97 | 70.03 | 75.48 | 77.77 | 77.50 | 71.81 | 69.43 | 63.42 | 70.18 | |||||||||||||
2010 | 66.48 | 64.89 | 67.32 | 65.63 | 66.71 | 67.37 | 69.39 | 72.84 | 74.33 | 72.65 | 70.30 | 65.61 | 68.63 | |||||||||||||
2011 | 69.00 | 65.04 | 67.26 | 69.17 | 70.06 | 69.77 | 74.29 | 73.58 | 73.53 | 71.71 | 67.50 | 64.16 | 69.59 | |||||||||||||
2012 | 67.35 | 64.83 | 64.29 | 67.13 | 67.77 | 69.07 | 72.97 | 78.39 | 80.73 | 75.58 | 68.90 | 62.84 | 69.99 | |||||||||||||
2013 | 64.55 | 64.00 | 65.90 | 66.83 | 70.42 | 70.73 | 74.39 | 75.71 | 77.27 | 72.52 | 71.03 | 68.55 | 70.16 | |||||||||||||
2014 | 70.55 | 68.04 | 69.87 | 71.57 | 75.33 | a | 72.53 | 78.26 | 78.55 | 80.97 | 78.61 | 74.30 | 67.32 | 73.82 | ||||||||||||
2015 | 69.42 | 70.43 | 74.19 | 71.90 | 68.06 | 73.43 | 77.13 | 80.58 | 82.97 | 80.71 | 72.07 | 66.55 | 73.95 | |||||||||||||
2016 | 65.45 | 74.38 | 68.71 | 71.97 | 68.81 | 73.57 | 75.81 | 77.71 | 78.07 | 77.48 | 74.70 | 66.29 | 72.74 | |||||||||||||
2017 | 64.39 | 65.25 | 70.10 | 72.23 | 69.84 | 73.20 | 77.39 | 77.71 | 78.60 | 78.65 | 72.50 | 70.84 | 72.56 | |||||||||||||
2018 | 69.81 | 67.32 | 67.19 | 69.80 | 67.81 | 71.67 | 80.55 | 83.29 | 76.70 | 75.42 | 73.93 | 67.10 | 72.55 | |||||||||||||
2019 | 66.35 | 62.50 | 66.71 | 69.77 | 68.13 | 70.23 | 74.71 | 76.55 | 78.30 | 78.35 | 72.07 | 66.84 | 70.88 | |||||||||||||
2020 | 67.87 | 68.17 | 66.87 | 70.47 | 74.03 | 73.67 | 75.84 | 78.81 | 81.87 | 79.84 | 72.33 | 69.03 | 73.23 | |||||||||||||
2021 | 67.90 | 67.64 | 66.55 | 69.93 | 69.03 | 72.87 | 77.45 | 78.52 | 77.67 | 75.10 | 73.13 | 62.32 | 71.51 | |||||||||||||
2022 | 66.87 | 69.61 | 67.42 | 69.47 | 67.35 | 70.93 | 73.61 | 79.55 | 81.80 | 74.10 | 69.03 | 64.94 | 71.22 | |||||||||||||
2023 | 63.61 | 64.21 | 63.16 | 66.20 | 66.48 | 69.60 | 75.52 | 77.16 | 75.67 | 74.68 | 72.77 | 68.35 | 69.78 | |||||||||||||
2024 | 64.58 | 64.14 | 65.77 | 67.10 | 67.52 | 71.40 | 76.71 | 78.97 | 77.37 | 73.35 | 71.07 | ----- | z | 70.72 | a | |||||||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 65.64 | 66.03 | 66.48 | 68.30 | 69.29 | 71.53 | 75.63 | 77.34 | 77.05 | 74.20 | 70.46 | 66.22 | 70.67 | |||||||||||||
S.D. | 2.71 | 2.63 | 2.17 | 2.21 | 2.21 | 2.24 | 2.24 | 2.07 | 2.67 | 2.61 | 2.59 | 2.64 | 1.39 | |||||||||||||
SKEW | -0.17 | 0.48 | 0.74 | -0.19 | 0.73 | 0.54 | 0.44 | 0.06 | 0.47 | 0.32 | 0.26 | 0.40 | 0.32 | |||||||||||||
MAX | 71.35 | 74.38 | 74.19 | 73.43 | 75.35 | 78.03 | 81.77 | 83.29 | 83.73 | 80.71 | 76.50 | 72.55 | 73.95 | |||||||||||||
MIN | 56.13 | 60.93 | 62.58 | 63.13 | 64.35 | 66.93 | 69.39 | 72.71 | 71.37 | 68.42 | 65.73 | 61.61 | 67.64 | |||||||||||||
YRS | 85 | 85 | 85 | 85 | 85 | 85 | 86 | 86 | 86 | 86 | 86 | 85 | 84 |