YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 74.06 | 73.56 | 74.42 | 67.24 | 60.68 | 51.55 | 66.92 | f | ||||||
1949 | 44.90 | 50.66 | 54.16 | 62.65 | 64.82 | 71.80 | 74.02 | 75.44 | 76.37 | 66.76 | 67.80 | 55.56 | 63.74 | |||||||||||||
1950 | 51.00 | 55.61 | a | 57.58 | 63.70 | 63.23 | 69.12 | 77.31 | 73.82 | 72.23 | 71.98 | 65.28 | 61.69 | 65.21 | ||||||||||||
1951 | 54.71 | 55.25 | 60.98 | h | 60.87 | 64.23 | 69.55 | 76.47 | 75.58 | 74.30 | 68.98 | 60.75 | 53.56 | 64.93 | a | |||||||||||
1952 | 50.73 | 55.34 | 53.18 | 59.12 | 67.69 | 66.87 | 76.19 | 77.79 | 78.95 | 70.34 | 59.28 | 55.27 | 64.23 | |||||||||||||
1953 | 58.71 | 56.62 | 57.71 | 58.88 | 62.35 | 67.42 | 78.13 | 75.60 | 74.23 | 69.89 | 64.71 | d | 57.65 | 65.16 | ||||||||||||
1954 | 54.48 | 62.50 | 56.32 | 62.05 | 65.57 | a | 68.93 | 78.77 | 74.63 | 75.68 | 68.55 | 65.45 | 56.89 | 65.82 | ||||||||||||
1955 | 51.53 | a | 54.82 | 59.82 | 61.55 | 63.15 | 68.92 | 73.75 | a | 78.88 | a | 78.47 | 66.56 | 61.40 | 56.06 | 64.58 | ||||||||||
1956 | 56.10 | 51.14 | 58.87 | 59.20 | 65.76 | 72.68 | b | 74.93 | a | 73.47 | 78.57 | a | 66.31 | 64.17 | 58.82 | 65.00 | ||||||||||
1957 | 53.68 | 59.09 | 58.62 | a | 60.88 | 63.16 | 74.18 | 77.06 | 77.60 | 73.32 | 64.77 | 57.43 | 58.27 | 64.84 | ||||||||||||
1958 | 55.97 | 58.00 | a | 54.61 | 62.62 | 67.15 | 69.62 | 73.73 | a | 77.92 | 77.02 | 74.00 | 62.60 | 61.58 | 66.23 | |||||||||||
1959 | 59.56 | 55.30 | 63.06 | 66.35 | 65.08 | 71.92 | 78.77 | 77.47 | 73.52 | 69.61 | 64.13 | 59.16 | b | 66.99 | ||||||||||||
1960 | 53.03 | 54.78 | 59.92 | 64.08 | 66.73 | 72.48 | 78.02 | 75.81 | 78.45 | 68.34 | 60.28 | 56.95 | 65.74 | |||||||||||||
1961 | 59.82 | 58.80 | 58.37 | 63.40 | 63.47 | 71.13 | 75.21 | 76.58 | 72.25 | 68.76 | 59.97 | 55.32 | 65.26 | |||||||||||||
1962 | 55.11 | 53.59 | 53.03 | 64.68 | 62.74 | 68.10 | 73.24 | 76.79 | 73.43 | 67.03 | 61.40 | 56.33 | a | 63.79 | ||||||||||||
1963 | 52.94 | 62.00 | 57.43 | a | 58.10 | 65.21 | 67.47 | a | 73.48 | 75.76 | 77.58 | 69.79 | 60.83 | 57.55 | 64.85 | |||||||||||
1964 | 52.58 | 55.53 | 55.79 | 59.95 | 62.40 | 68.23 | 75.40 | 75.34 | 71.48 | 72.10 | 58.63 | 55.02 | 63.54 | |||||||||||||
1965 | 54.95 | 55.38 | 56.94 | 60.77 | 63.24 | 64.80 | 72.40 | 77.81 | 69.67 | 72.69 | 61.43 | 54.97 | 63.75 | |||||||||||||
1966 | 53.58 | 52.93 | 58.74 | 64.22 | 66.08 | 70.23 | 74.94 | 78.16 | 73.27 | 69.24 | 62.18 | 57.05 | 65.05 | |||||||||||||
1967 | 55.45 | 58.12 | 58.35 | 53.70 | 65.29 | 65.88 | 76.32 | 80.60 | 75.70 | 71.90 | 64.85 | 52.47 | 64.89 | |||||||||||||
1968 | 55.23 | 60.64 | 59.94 | 61.57 | 65.45 | 70.27 | 76.67 | a | 74.45 | 74.52 | 68.16 | 61.97 | 53.97 | 65.23 | ||||||||||||
1969 | 56.85 | 52.48 | 56.00 | 61.88 | 65.90 | 67.37 | 75.71 | 79.68 | 75.83 | 66.13 | 63.93 | 56.60 | a | 64.86 | ||||||||||||
1970 | 56.34 | 59.75 | 58.68 | 59.00 | 66.84 | 69.77 | 76.40 | 78.03 | 73.65 | 67.05 | 61.40 | a | 54.19 | 65.09 | ||||||||||||
1971 | 54.82 | 55.21 | 57.23 | 59.22 | 60.97 | 67.98 | 75.47 | 79.97 | 74.88 | 66.34 | 57.62 | 49.79 | 63.29 | |||||||||||||
1972 | 51.34 | 57.62 | 61.63 | 63.05 | 66.90 | 70.20 | 78.37 | 77.05 | 71.80 | 65.56 | 58.27 | 52.71 | 64.54 | |||||||||||||
1973 | 50.47 | 55.54 | 53.00 | 59.15 | ----- | z | 72.42 | 73.85 | 74.84 | 70.33 | 68.39 | 59.05 | 57.48 | 63.14 | a | |||||||||||
1974 | 54.39 | 55.84 | 57.90 | 61.20 | e | 65.19 | e | 72.12 | 73.83 | b | 71.55 | 72.69 | a | 65.94 | 60.62 | e | 54.06 | 63.78 | ||||||||
1975 | 55.52 | 52.43 | 53.50 | a | 53.82 | 61.90 | 66.92 | 73.39 | 74.03 | 75.02 | 64.85 | 59.62 | 54.92 | 62.16 | ||||||||||||
1976 | 56.71 | 55.74 | b | 55.69 | 56.91 | b | 65.26 | 72.36 | a | 74.58 | 73.71 | 71.33 | a | 68.89 | 63.48 | 57.27 | 64.33 | |||||||||
1977 | 54.76 | 59.86 | 54.92 | 62.95 | 60.65 | 70.27 | 75.76 | 76.37 | 73.37 | 69.71 | 63.97 | a | 60.21 | 65.23 | ||||||||||||
1978 | 56.21 | 55.98 | 59.56 | 58.97 | 66.47 | 74.50 | 76.31 | 75.03 | 74.75 | 71.00 | 58.98 | 52.37 | 65.01 | |||||||||||||
1979 | 51.81 | 53.98 | 56.08 | 61.38 | 65.48 | 74.30 | e | 74.42 | 74.18 | 78.92 | 67.15 | a | 60.05 | 59.76 | 64.79 | |||||||||||
1980 | 57.08 | a | 60.28 | 56.52 | 62.08 | 59.68 | 69.76 | a | 77.15 | 76.74 | 72.43 | 69.13 | 63.30 | 59.53 | 65.31 | |||||||||||
1981 | 58.60 | 59.41 | a | 57.02 | 62.05 | 65.61 | 75.03 | 77.77 | 79.16 | 75.30 | 65.15 | 63.43 | a | 59.40 | 66.49 | |||||||||||
1982 | 52.90 | 57.66 | 56.66 | 61.10 | 64.23 | a | 66.10 | a | 75.25 | a | 78.26 | 76.03 | 69.65 | 59.95 | a | 54.95 | 64.40 | |||||||||
1983 | 57.73 | 56.96 | 57.64 | c | 58.90 | 65.77 | 68.02 | 73.88 | c | 78.78 | a | 78.43 | b | 69.95 | a | 60.95 | 55.52 | 65.21 | ||||||||
1984 | 57.39 | 57.66 | 60.92 | ----- | z | 69.20 | a | 70.10 | 78.81 | 77.20 | a | 79.02 | a | 65.37 | 57.25 | 52.15 | 65.91 | a | ||||||||
1985 | 51.77 | a | 52.46 | 53.32 | 62.75 | 63.97 | a | 70.22 | 77.58 | a | 75.52 | a | 70.93 | a | 67.20 | c | 57.35 | 56.52 | 63.30 | |||||||
1986 | 59.31 | 56.81 | a | 59.18 | c | 60.80 | 65.15 | a | 71.38 | b | 74.33 | a | 78.16 | 68.32 | 66.17 | a | 63.05 | 56.81 | 64.95 | |||||||
1987 | 53.02 | b | 55.79 | 57.03 | 65.22 | c | 66.35 | a | 69.95 | 69.73 | 73.32 | 73.54 | c | 71.72 | d | 60.28 | 51.23 | a | 63.93 | |||||||
1988 | 55.28 | a | ----- | z | 61.02 | 62.64 | a | 65.90 | b | 68.32 | 75.43 | a | 74.80 | a | 72.81 | a | 68.70 | c | 59.55 | 54.63 | a | 65.37 | a | |||
1989 | 52.41 | c | 54.69 | b | 60.36 | b | 65.38 | d | 65.02 | 70.50 | b | 74.79 | b | 74.21 | b | 74.05 | 67.17 | a | 63.40 | a | 59.47 | 65.12 | ||||
1990 | 56.69 | b | ----- | z | 59.69 | 63.87 | 65.45 | 73.75 | b | ----- | z | 76.15 | ----- | z | 72.61 | c | 63.84 | b | 55.67 | a | 65.30 | c | ||||
1991 | 56.66 | 61.43 | e | 54.20 | a | 61.22 | a | 65.63 | 68.57 | 73.47 | 75.33 | a | ----- | z | 72.19 | 64.38 | 56.66 | b | 64.52 | a | ||||||
1992 | 56.65 | 59.93 | 58.27 | 67.30 | 70.10 | a | 72.45 | 77.30 | a | ----- | z | 76.88 | 70.32 | 62.70 | 54.33 | a | 66.02 | a | ||||||||
1993 | 55.11 | 55.68 | 61.42 | 65.05 | ----- | z | 71.43 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 61.74 | g | |||||
1994 | 59.62 | a | 55.83 | a | 60.12 | a | ----- | z | ----- | z | 73.97 | a | 75.11 | 79.57 | c | 75.77 | 68.02 | b | 56.63 | 55.94 | 66.06 | b | ||||
1995 | 54.52 | i | 62.14 | c | 58.64 | b | 61.08 | 62.42 | 68.26 | a | 75.83 | b | 79.08 | a | 76.65 | 69.50 | c | 63.09 | b | 57.19 | b | 66.72 | a | |||
1996 | 57.55 | b | 57.21 | 59.42 | 65.68 | h | 68.45 | k | 71.36 | i | 77.58 | k | 78.23 | i | 73.73 | h | 65.21 | j | ----- | z | 56.90 | k | 58.06 | i | ||
1997 | 57.15 | k | 57.07 | g | ----- | z | 63.36 | h | ----- | z | ----- | z | 74.14 | j | 77.36 | j | ----- | z | ----- | z | 63.10 | j | ----- | z | ----- | z |
1998 | 54.40 | e | 52.26 | g | 55.46 | g | 58.11 | b | 60.70 | a | ----- | z | 76.31 | j | 79.96 | h | 72.15 | g | 65.84 | i | 60.67 | j | 54.35 | k | 57.74 | i |
1999 | 57.30 | k | 54.23 | h | 56.82 | f | 59.14 | e | 62.81 | j | 69.15 | g | 74.84 | i | 72.57 | h | 73.35 | j | 74.83 | j | ----- | z | 60.50 | j | 59.14 | k |
2000 | 60.83 | k | 59.32 | g | 60.77 | k | 64.59 | h | 70.46 | g | 74.70 | j | 74.12 | f | 77.17 | k | 73.86 | i | 66.76 | h | 58.29 | i | 58.07 | j | ----- | z |
2001 | 53.74 | j | 54.84 | f | 59.60 | j | 60.27 | j | 68.67 | k | 73.61 | h | 74.46 | g | 77.26 | h | 74.10 | i | 68.15 | h | 60.76 | a | 53.40 | 57.08 | j | |
2002 | 54.03 | b | 58.75 | 57.46 | h | 61.67 | f | 64.50 | h | 71.41 | h | 73.26 | j | 72.71 | j | 74.39 | k | 63.45 | k | 64.62 | m | 55.50 | h | 56.39 | j | |
2003 | 62.33 | k | 57.97 | i | 58.66 | f | 59.38 | i | 63.14 | m | ----- | z | 76.92 | y | 80.13 | l | 74.63 | o | ----- | z | 61.69 | q | 58.47 | l | ----- | z |
2004 | 58.39 | m | 55.90 | i | 65.89 | m | 66.24 | m | 72.39 | l | 73.14 | l | 78.86 | m | 77.60 | j | 78.75 | j | 66.05 | i | 57.26 | k | 56.17 | m | ----- | z |
2005 | 54.73 | k | 55.17 | h | 57.38 | j | ----- | z | 66.45 | i | 68.67 | l | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2006 | 55.93 | x | 62.55 | i | ----- | z | ----- | z | 66.14 | i | 76.90 | j | 81.15 | h | 74.52 | j | 73.32 | h | 66.83 | h | 64.05 | k | 56.25 | i | ----- | z |
2007 | 51.17 | k | 54.39 | i | 57.17 | h | 60.11 | h | 65.38 | j | 68.05 | k | ----- | z | 76.20 | i | 68.47 | j | 63.56 | m | 57.55 | i | 49.41 | h | ----- | z |
2008 | 51.38 | j | ----- | z | 55.78 | h | ----- | z | ----- | z | 70.86 | h | 73.00 | j | 73.48 | h | 71.52 | h | 68.33 | k | 62.74 | i | 50.55 | k | ----- | z |
2009 | 52.48 | i | 51.75 | h | 53.75 | i | 56.83 | j | 62.91 | h | 64.16 | h | 72.68 | i | 72.13 | h | 73.12 | j | 63.41 | h | 56.14 | i | 49.17 | j | ----- | z |
2010 | 51.52 | h | 50.23 | h | 51.29 | j | 52.88 | i | 56.43 | i | 62.12 | i | 67.93 | i | 66.82 | q | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2011 | 53.23 | i | 48.25 | h | ----- | z | 55.81 | i | 57.82 | i | 61.10 | i | ----- | z | 76.07 | j | 75.23 | f | 69.61 | h | 57.53 | k | 52.75 | c | 52.75 | k |
2012 | 55.77 | k | 53.57 | 54.41 | c | 58.58 | 63.31 | 67.95 | a | 72.58 | a | 78.27 | 76.47 | 68.30 | a | 59.89 | k | 51.23 | 64.47 | b | ||||||
2013 | 51.27 | 51.39 | 57.31 | 59.28 | 65.04 | c | 65.17 | c | 73.73 | 69.98 | b | 74.80 | 67.63 | 64.03 | 59.84 | 63.29 | ||||||||||
2014 | 64.13 | 61.91 | 64.44 | 66.28 | 72.42 | 73.12 | 78.92 | 78.55 | 80.97 | 75.08 | 66.80 | 59.98 | 70.22 | |||||||||||||
2015 | 60.24 | 64.23 | b | 67.03 | 66.90 | 65.89 | 75.02 | 77.03 | 80.79 | 80.50 | 76.53 | 65.08 | 58.55 | 69.82 | ||||||||||||
2016 | 58.53 | 66.36 | 63.83 | b | 67.82 | 66.71 | 76.35 | 79.06 | 79.52 | 76.73 | 74.68 | 65.38 | 56.87 | 69.32 | ||||||||||||
2017 | 56.58 | 58.75 | 63.87 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 59.73 | i | |||
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 |
2023 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2024 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 55.19 | 56.97 | 58.09 | 61.57 | 64.94 | 70.25 | 75.58 | 76.49 | 74.91 | 69.02 | 61.80 | 56.07 | 65.08 | |||||||||||||
S.D. | 3.16 | 3.39 | 3.10 | 3.05 | 2.35 | 2.74 | 2.01 | 2.35 | 2.81 | 2.75 | 2.65 | 2.77 | 1.63 | |||||||||||||
SKEW | -0.19 | 0.45 | 0.50 | -0.19 | 0.35 | 0.16 | -0.19 | -0.32 | 0.03 | 0.67 | 0.01 | -0.07 | 1.59 | |||||||||||||
MAX | 64.13 | 66.36 | 67.03 | 67.82 | 72.42 | 76.35 | 79.06 | 80.79 | 80.97 | 76.53 | 67.80 | 61.69 | 70.22 | |||||||||||||
MIN | 44.90 | 50.66 | 53.00 | 53.70 | 59.68 | 64.80 | 69.73 | 69.98 | 68.32 | 64.77 | 56.63 | 49.79 | 62.16 | |||||||||||||
YRS | 54 | 53 | 53 | 52 | 50 | 52 | 51 | 51 | 50 | 52 | 52 | 54 | 41 |