YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1948 | 64.55 | 56.79 | 56.68 | 62.60 | 64.84 | 66.20 | 75.06 | 76.19 | 80.77 | 70.84 | 67.27 | 55.77 | 66.46 | |||||||||||||
1949 | 48.03 | 54.18 | 56.26 | 67.60 | 66.65 | 71.37 | 74.52 | 79.06 | 80.63 | 70.84 | 75.87 | 60.94 | 67.16 | |||||||||||||
1950 | 54.61 | 62.57 | 62.10 | 65.07 | 61.19 | 68.63 | 76.43 | a | 78.23 | 73.03 | 76.94 | 71.40 | 67.35 | 68.13 | ||||||||||||
1951 | 58.74 | 58.86 | 62.55 | 59.57 | 65.16 | 66.30 | 77.19 | 76.06 | 77.23 | 72.77 | 64.90 | 56.45 | 66.32 | |||||||||||||
1952 | 54.55 | 58.76 | 54.71 | 61.97 | 71.16 | 64.97 | 80.94 | 81.06 | 81.67 | 74.42 | 61.83 | 57.23 | 66.94 | |||||||||||||
1953 | 64.29 | 63.14 | 60.32 | 57.80 | 64.32 | 65.00 | p | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 61.98 | g | |||||
1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1963 | 57.39 | 68.75 | 59.42 | 61.10 | 62.94 | 66.40 | 78.97 | 80.19 | 82.53 | 71.42 | 64.67 | 65.03 | 68.23 | |||||||||||||
1964 | 58.94 | 61.97 | 59.97 | 61.77 | 64.81 | 68.80 | 83.87 | 81.13 | 77.17 | 78.00 | 62.90 | 58.19 | 68.13 | |||||||||||||
1965 | 60.74 | 59.96 | 56.39 | 64.83 | 66.58 | 63.57 | 76.77 | 82.23 | 70.83 | 79.13 | 62.77 | 58.94 | 66.89 | |||||||||||||
1966 | 57.97 | 57.64 | 64.03 | 67.17 | 64.74 | 73.23 | 78.71 | 80.10 | 75.47 | 74.06 | 63.87 | 61.90 | 68.24 | |||||||||||||
1967 | 63.03 | 67.46 | 57.74 | 52.47 | 67.61 | 63.97 | 81.29 | 83.71 | 74.60 | 78.32 | 67.17 | 57.10 | 67.87 | |||||||||||||
1968 | 59.35 | 63.90 | 63.09 | h | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 61.63 | j | ||
1969 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1970 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1971 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1972 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1973 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1974 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1975 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1976 | ----- | z | ----- | z | 57.83 | y | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1978 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1981 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1982 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1983 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1984 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1985 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1986 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1987 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1988 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1989 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1990 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1991 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1992 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1993 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1994 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1995 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1996 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1997 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1998 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1999 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2000 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 71.21 | f | 74.94 | 78.84 | 75.93 | 64.74 | 61.10 | 64.52 | 70.01 | f | ||||||
2001 | 57.29 | 55.57 | 59.39 | 59.27 | 69.45 | 74.17 | a | 72.37 | a | 78.74 | 75.87 | 71.32 | 64.40 | 58.39 | 66.35 | |||||||||||
2002 | 59.71 | 64.82 | 59.52 | 60.75 | b | 65.16 | 70.83 | 75.74 | 74.94 | 80.67 | 64.45 | 67.86 | a | 57.97 | a | 66.87 | ||||||||||
2003 | 68.53 | a | 58.33 | a | 63.17 | a | 59.87 | 66.84 | 67.67 | 81.33 | a | 82.19 | 78.33 | 77.97 | 62.20 | 59.48 | 68.83 | |||||||||
2004 | 59.83 | a | 56.38 | 68.94 | 65.77 | 70.71 | 67.60 | 75.19 | 74.06 | 77.97 | 67.23 | 60.03 | 60.00 | 66.98 | ||||||||||||
2005 | 59.81 | 57.00 | 60.48 | 63.10 | 67.32 | 66.43 | 78.94 | 77.48 | 72.13 | 68.65 | 67.67 | 62.03 | 66.75 | |||||||||||||
2006 | 60.58 | 64.61 | 54.06 | 59.00 | 65.23 | 76.67 | 85.00 | 75.92 | e | 78.57 | 68.97 | 69.83 | 63.16 | 68.47 | ||||||||||||
2007 | 59.39 | 60.79 | 67.13 | 64.40 | 65.68 | f | 72.40 | 77.23 | 79.00 | 73.63 | 71.03 | 67.30 | 57.26 | 68.14 | a | |||||||||||
2008 | 56.97 | 59.38 | 63.74 | 66.63 | 66.10 | 77.07 | 76.58 | 79.00 | 78.13 | 79.19 | 71.03 | 57.71 | 69.29 | |||||||||||||
2009 | 65.81 | 58.86 | 60.90 | 63.40 | 68.61 | 66.90 | 79.32 | 79.29 | 81.70 | 70.48 | 68.30 | 57.93 | c | 68.46 | ||||||||||||
2010 | 61.23 | 58.39 | 61.65 | 59.10 | 64.55 | 67.50 | 70.00 | 77.00 | a | 78.57 | 65.67 | d | 63.33 | 60.13 | a | 65.59 | ||||||||||
2011 | 62.65 | 56.96 | 60.84 | 63.93 | 65.55 | 67.33 | 75.13 | 78.97 | 76.93 | 73.87 | 64.00 | 60.74 | 67.24 | |||||||||||||
2012 | 66.23 | 60.79 | a | 60.63 | a | 65.37 | 69.03 | b | 69.20 | 75.68 | 83.61 | 82.90 | 73.77 | 66.47 | 57.19 | 69.24 | ||||||||||
2013 | 59.71 | 59.57 | 65.58 | 65.69 | d | 70.55 | 72.03 | 75.77 | 78.94 | 78.87 | 69.90 | 67.13 | 64.39 | 69.01 | ||||||||||||
2014 | 69.48 | 63.18 | 64.65 | 68.03 | 72.74 | 70.47 | 77.00 | 77.00 | 79.57 | 75.39 | 67.88 | e | 60.26 | 70.47 | ||||||||||||
2015 | 65.35 | 66.82 | 71.84 | 67.43 | 62.94 | 74.63 | 73.23 | 79.29 | 80.27 | 77.13 | 65.57 | 59.90 | 70.37 | |||||||||||||
2016 | 58.06 | 70.62 | 63.65 | 67.86 | a | 62.74 | 76.17 | a | 77.03 | 77.32 | 76.14 | a | 72.68 | 72.96 | c | 60.03 | 69.61 | |||||||||
2017 | 57.71 | 58.43 | 68.39 | 71.16 | k | 67.71 | 76.00 | 81.32 | 79.81 | 77.17 | 78.10 | 70.50 | 68.84 | 71.27 | a | |||||||||||
2018 | 68.16 | 63.39 | 61.87 | 67.17 | a | 64.03 | 71.07 | 83.42 | 79.33 | a | 75.80 | 72.55 | 68.80 | 61.06 | 69.72 | |||||||||||
2019 | 59.84 | 53.21 | 60.30 | a | 66.07 | 60.87 | 67.93 | 77.34 | b | 81.10 | 78.93 | 76.23 | 69.04 | c | 59.70 | a | 67.55 | |||||||||
2020 | 61.71 | 63.97 | 58.87 | 65.90 | 71.10 | 71.43 | 76.10 | 82.55 | 84.37 | 79.03 | 69.27 | 64.32 | c | 70.72 | ||||||||||||
2021 | 63.77 | 62.86 | 60.03 | 66.43 | 65.62 | b | 74.57 | 78.70 | k | 78.79 | b | 77.27 | 69.86 | i | 72.57 | 57.07 | a | 67.90 | b | |||||||
2022 | 64.10 | 65.54 | 66.39 | 65.93 | c | 66.58 | 80.12 | m | 76.58 | 81.97 | 81.77 | 71.97 | 64.00 | 59.87 | 69.52 | a | ||||||||||
2023 | 56.90 | 58.29 | 55.65 | 63.97 | 61.26 | 63.47 | 83.81 | 80.58 | 71.63 | 76.52 | 70.27 | 64.45 | 67.23 | |||||||||||||
2024 | 60.71 | 57.38 | 60.23 | 64.36 | h | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 59.44 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 60.71 | 60.81 | 61.37 | 63.55 | 66.20 | 69.84 | 77.66 | 79.23 | 77.85 | 73.14 | 66.89 | 60.45 | 68.04 | |||||||||||||
S.D. | 4.33 | 4.12 | 4.09 | 3.60 | 3.03 | 4.00 | 3.46 | 2.36 | 3.33 | 4.26 | 3.72 | 3.21 | 1.36 | |||||||||||||
SKEW | -0.22 | 0.42 | 0.47 | -0.99 | 0.26 | 0.24 | 0.33 | -0.09 | -0.22 | -0.33 | 0.24 | 0.81 | 0.32 | |||||||||||||
MAX | 69.48 | 70.62 | 71.84 | 68.03 | 72.74 | 77.07 | 85.00 | 83.71 | 84.37 | 79.19 | 75.87 | 68.84 | 70.72 | |||||||||||||
MIN | 48.03 | 53.21 | 54.06 | 52.47 | 60.87 | 63.47 | 70.00 | 74.06 | 70.83 | 64.45 | 60.03 | 55.77 | 65.59 | |||||||||||||
YRS | 36 | 36 | 35 | 33 | 33 | 32 | 33 | 34 | 34 | 33 | 34 | 34 | 29 |