YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 71.66 | 72.97 | 72.17 | 61.23 | a | 61.62 | 49.68 | 64.89 | f | |||||
1950 | 45.65 | a | 53.09 | 55.10 | 60.45 | 60.15 | 66.53 | 74.13 | 71.35 | 67.77 | 65.69 | 61.18 | 57.84 | 61.58 | ||||||||||||
1951 | 50.98 | a | 52.52 | 56.52 | 59.65 | 63.65 | 67.03 | 75.37 | 72.24 | 71.53 | 63.15 | 55.68 | 49.45 | 61.48 | ||||||||||||
1952 | 47.44 | 52.29 | 50.08 | 58.18 | 65.13 | 62.98 | 72.68 | 73.63 | 72.03 | 66.26 | 53.37 | 50.75 | a | 60.40 | ||||||||||||
1953 | 56.37 | 54.20 | 54.35 | a | 56.07 | 59.42 | 63.28 | c | 75.55 | 70.85 | 69.95 | 63.00 | 57.80 | 54.76 | 61.30 | |||||||||||
1954 | 49.85 | 58.41 | 51.95 | 59.68 | 62.68 | 66.67 | 77.40 | 70.26 | 69.00 | 61.27 | 58.27 | 50.76 | 61.35 | |||||||||||||
1955 | 48.10 | 51.45 | 55.87 | 58.20 | 63.03 | a | 67.47 | 72.23 | a | 78.27 | a | 74.55 | 64.02 | 57.32 | 51.50 | a | 61.83 | |||||||||
1956 | 52.10 | 48.24 | 57.50 | 57.88 | 62.60 | 70.22 | 73.85 | 72.03 | 74.92 | 63.06 | 61.80 | 56.77 | 62.58 | |||||||||||||
1957 | 49.19 | 56.86 | 58.29 | 59.13 | 62.32 | i | 74.70 | 77.34 | 75.24 | 71.20 | 63.10 | 55.98 | 56.69 | 63.43 | a | |||||||||||
1958 | 56.13 | 56.68 | 52.37 | a | 61.35 | 66.97 | 69.68 | 74.08 | 78.60 | 75.37 | 70.53 | 58.92 | 58.05 | a | 64.89 | |||||||||||
1959 | 56.06 | 52.29 | 61.58 | 64.97 | 62.71 | 72.43 | 80.16 | 76.85 | 72.22 | 68.77 | 62.97 | 56.92 | 65.66 | |||||||||||||
1960 | 49.68 | 53.97 | 60.85 | 63.80 | 67.74 | 73.27 | 79.92 | 76.45 | 76.73 | 66.29 | 56.72 | c | 54.87 | 65.02 | ||||||||||||
1961 | 58.21 | 59.18 | 58.08 | 63.68 | 63.42 | 72.13 | 77.18 | 78.62 | b | 70.73 | 65.93 | a | 57.42 | 53.98 | 64.88 | |||||||||||
1962 | 55.05 | a | 52.31 | a | 52.55 | 64.55 | a | 61.76 | 67.13 | 73.03 | 77.89 | c | 72.27 | 65.34 | 59.53 | 55.53 | 63.08 | |||||||||
1963 | 50.44 | 61.52 | 55.18 | 56.58 | 63.11 | 66.60 | 73.37 | 74.58 | 75.82 | 66.69 | 58.42 | 55.52 | 63.15 | |||||||||||||
1964 | 52.15 | a | 53.55 | a | 54.81 | 58.80 | 61.66 | 67.00 | 75.23 | 74.85 | 69.97 | 69.95 | 55.12 | 53.73 | 62.23 | |||||||||||
1965 | 54.50 | 54.48 | 55.31 | 59.37 | 63.98 | 64.65 | 73.44 | 77.65 | 68.05 | a | 68.98 | 57.83 | 51.29 | 62.46 | ||||||||||||
1966 | 51.76 | 50.79 | 59.19 | 64.50 | 65.61 | 70.52 | 74.71 | 77.37 | 72.33 | 67.31 | 58.28 | 53.60 | 63.83 | |||||||||||||
1967 | 53.42 | 57.79 | 56.02 | 51.32 | 64.73 | 65.93 | 77.21 | 80.50 | a | 74.15 | 68.76 | 61.73 | 51.42 | 63.58 | ||||||||||||
1968 | 52.16 | 59.21 | 58.15 | 61.07 | 65.15 | 69.90 | 76.84 | 72.69 | 73.25 | 66.44 | 60.18 | 49.87 | 63.74 | |||||||||||||
1969 | 53.60 | 50.89 | 55.66 | 61.23 | 66.24 | 66.88 | 76.03 | 79.05 | 75.10 | 63.63 | 61.75 | 54.63 | 63.72 | |||||||||||||
1970 | 54.34 | 57.62 | 58.05 | 58.43 | 66.31 | 71.38 | 77.61 | 78.02 | 72.25 | 65.10 | 59.45 | 51.39 | 64.16 | |||||||||||||
1971 | 54.50 | 54.88 | 56.94 | 58.73 | 61.66 | 69.09 | a | 76.53 | 79.05 | 74.60 | 63.89 | 56.65 | 48.97 | 62.96 | ||||||||||||
1972 | 53.31 | 57.62 | 63.63 | 61.33 | 66.19 | 72.50 | 77.74 | 76.84 | 71.85 | 64.27 | 56.53 | 51.74 | 64.46 | |||||||||||||
1973 | 50.90 | 54.93 | 53.29 | 60.78 | 67.29 | 73.18 | 74.66 | 76.03 | 69.85 | 67.31 | 55.45 | 54.98 | 63.22 | |||||||||||||
1974 | 53.10 | 56.36 | 57.74 | 61.87 | 65.08 | 73.43 | 77.48 | 75.65 | 76.08 | 66.58 | 59.38 | 54.06 | 64.73 | |||||||||||||
1975 | 55.37 | 53.71 | 55.98 | 55.32 | 65.66 | 68.98 | 75.81 | 74.84 | 75.22 | 65.94 | 58.84 | a | 56.50 | 63.51 | ||||||||||||
1976 | 57.45 | 56.70 | a | 57.94 | 57.92 | 67.50 | 73.07 | 76.11 | 73.02 | 71.98 | 68.39 | 63.28 | 55.18 | 64.88 | ||||||||||||
1977 | 52.69 | b | 60.39 | a | 53.71 | 62.43 | 59.65 | 70.75 | 76.58 | 77.19 | 70.45 | a | 67.87 | 62.88 | 57.86 | c | 64.37 | |||||||||
1978 | 54.52 | a | 55.54 | 59.52 | 57.78 | 66.87 | 72.75 | 76.74 | b | 75.06 | 73.75 | 69.83 | a | 55.82 | 50.50 | 64.06 | ||||||||||
1979 | 49.76 | 52.27 | 56.21 | 60.40 | 65.53 | 72.57 | a | 76.48 | 75.12 | b | 78.00 | 65.76 | 57.63 | 55.97 | 63.81 | |||||||||||
1980 | 56.65 | 58.10 | 55.00 | 61.22 | 59.84 | b | 68.07 | b | 78.02 | 75.29 | 71.98 | 67.90 | 59.33 | a | 57.55 | 64.08 | ||||||||||
1981 | 56.17 | a | 57.95 | 55.53 | 62.20 | 65.61 | 77.78 | 76.58 | 78.56 | 73.72 | 63.12 | a | 59.83 | a | 56.56 | 65.30 | ||||||||||
1982 | 51.43 | d | 56.11 | e | 53.17 | g | 59.00 | h | 63.29 | g | 64.10 | f | 74.73 | a | 78.11 | d | 71.30 | g | 67.43 | a | 56.88 | b | 53.70 | a | 62.63 | e |
1983 | 56.67 | b | 57.50 | d | 57.07 | b | 56.60 | e | 66.75 | c | 69.38 | d | 74.61 | d | 78.79 | e | 77.88 | e | 70.11 | c | 58.56 | c | 55.95 | c | 64.99 | |
1984 | 58.64 | b | 57.80 | a | 61.52 | b | 61.94 | d | 72.57 | c | 72.43 | b | 80.89 | d | 79.78 | d | 80.15 | d | 64.52 | b | 56.31 | f | 50.22 | d | 67.31 | a |
1985 | 52.37 | d | 54.73 | b | 54.46 | e | 64.92 | d | 64.52 | e | 74.08 | e | 80.62 | f | 76.82 | c | 69.42 | f | 67.48 | f | 56.52 | c | 57.66 | f | 62.30 | d |
1986 | 58.95 | c | 58.04 | b | 60.76 | h | 60.85 | f | 66.14 | f | 73.76 | e | 75.13 | d | 79.77 | c | 67.62 | e | 66.13 | d | 62.29 | b | 54.75 | c | 66.27 | c |
1987 | 52.79 | j | 55.79 | g | 57.05 | c | 66.52 | e | 68.33 | e | 72.83 | d | 71.65 | d | 76.54 | e | 75.20 | c | 70.88 | e | 59.38 | e | 49.71 | e | 66.81 | b |
1988 | 53.91 | c | 58.76 | d | 61.23 | g | 61.67 | f | 67.35 | h | 69.77 | f | 78.09 | d | 75.78 | a | 73.54 | f | 69.04 | c | 59.30 | h | 51.50 | h | 67.12 | g |
1989 | 51.74 | h | 53.97 | i | 60.77 | i | 67.43 | 66.27 | 72.43 | 78.11 | 74.98 | a | 74.30 | 68.00 | 62.57 | a | 57.67 | a | 69.09 | c | ||||||
1990 | 55.35 | 54.62 | 59.92 | 64.33 | 65.76 | 74.93 | 79.28 | b | 77.02 | a | 74.88 | 70.35 | 60.48 | 51.52 | c | 65.70 | ||||||||||
1991 | 54.69 | 59.66 | 53.15 | 60.33 | f | 64.30 | i | 67.62 | b | 74.17 | d | 76.04 | d | 76.37 | c | 71.78 | b | 62.30 | g | 55.33 | e | 65.42 | c | |||
1992 | 55.60 | f | 58.90 | e | 56.67 | d | 66.74 | c | 69.46 | f | 71.02 | c | 77.98 | b | 82.00 | d | 75.83 | 69.19 | 61.64 | a | 50.85 | a | 67.08 | b | ||
1993 | 52.48 | 53.54 | a | 61.47 | 66.77 | f | 67.65 | d | 73.57 | h | 74.17 | e | 76.04 | d | 75.46 | d | 66.78 | d | 58.78 | g | 54.38 | e | 64.66 | c | ||
1994 | 56.28 | f | 52.91 | e | 59.91 | h | 61.71 | f | 62.88 | g | 73.18 | e | 74.50 | c | 77.77 | c | 71.46 | d | 63.65 | a | 51.71 | a | 53.29 | 64.81 | d | |
1995 | 51.90 | 60.39 | f | 56.98 | f | 59.23 | 60.82 | 68.66 | a | 74.44 | f | 77.61 | 74.10 | f | 66.71 | 61.86 | a | 54.80 | f | 63.83 | e | |||||
1996 | 53.60 | b | 56.21 | a | 56.68 | f | 65.23 | d | 66.57 | a | 71.88 | a | 78.85 | a | 80.00 | a | 72.05 | b | 66.10 | e | 59.46 | d | 54.87 | d | 65.89 | a |
1997 | 54.96 | c | 55.02 | d | 61.07 | i | 62.84 | b | 71.73 | c | 71.12 | e | 74.10 | b | 76.45 | c | 75.17 | c | 62.71 | g | 56.27 | b | 51.11 | 64.88 | b | |
1998 | 51.22 | a | 49.30 | 55.02 | a | 55.30 | b | 57.35 | d | 63.64 | e | 75.54 | d | 80.30 | d | 70.77 | b | 63.86 | b | 57.74 | c | 55.52 | i | 61.82 | a | |
1999 | 56.52 | j | 55.02 | g | 54.57 | h | 58.58 | f | 63.69 | g | 68.13 | d | 74.36 | b | 74.59 | b | 71.22 | c | 69.06 | d | 59.71 | a | 55.72 | d | 67.54 | e |
2000 | 54.98 | b | 54.33 | f | 58.79 | c | 63.94 | f | 67.79 | e | 72.71 | d | 73.74 | b | 77.44 | d | 72.92 | f | 63.22 | f | 54.12 | 56.91 | d | 64.56 | d | |
2001 | 50.96 | c | 51.55 | f | 59.89 | c | 56.89 | g | 69.52 | f | 71.54 | f | 71.59 | h | 75.63 | e | 73.52 | c | 68.31 | g | 59.50 | f | 51.69 | e | 62.34 | g |
2002 | 52.20 | f | 56.58 | c | 55.91 | b | 59.64 | e | 64.55 | c | 71.11 | b | 76.27 | a | 73.98 | a | 75.41 | c | 63.12 | c | 61.37 | c | 51.68 | a | 64.51 | a |
2003 | 60.90 | a | 54.11 | a | 59.22 | a | 56.12 | b | 64.67 | b | 68.91 | c | 77.95 | a | 78.50 | a | 76.22 | a | 71.25 | a | 55.21 | b | 52.83 | d | 64.66 | |
2004 | 54.16 | c | 52.48 | c | 65.57 | d | 64.30 | g | 66.98 | c | 70.42 | d | 75.95 | a | 75.55 | b | 75.46 | e | 63.77 | c | 56.71 | b | 54.83 | e | 64.72 | a |
2005 | 55.20 | i | 56.69 | d | 59.48 | h | 61.62 | f | 68.27 | e | 69.34 | h | 80.02 | d | 78.44 | e | 71.58 | d | 67.76 | h | 62.70 | 57.94 | e | 67.95 | e | |
2006 | 55.88 | c | 58.07 | g | 52.46 | h | 58.48 | d | 69.44 | g | 77.40 | e | 83.94 | f | 78.29 | e | 75.74 | c | 66.85 | a | 63.48 | 55.73 | a | 66.48 | d | |
2007 | 53.48 | a | 55.61 | 62.14 | b | 62.37 | 66.83 | b | 72.00 | 78.37 | 79.15 | 72.08 | 67.44 | d | 61.43 | a | 51.33 | a | 65.19 | |||||||
2008 | 51.98 | 54.04 | a | 59.43 | c | 62.07 | a | 63.90 | b | 74.29 | d | 76.90 | 77.27 | a | 75.92 | f | 70.20 | h | 63.46 | c | 50.84 | c | 63.42 | b | ||
2009 | 58.27 | a | 52.44 | b | 55.98 | d | 59.12 | e | 68.62 | f | 66.81 | f | 77.71 | e | 76.54 | f | 77.18 | h | 64.73 | g | 60.52 | f | 51.90 | g | 60.70 | g |
2010 | 54.77 | g | 54.12 | h | 57.52 | g | 56.76 | g | 63.14 | j | 70.05 | j | 73.27 | i | 75.12 | e | 73.39 | h | 65.41 | h | 57.50 | f | 54.94 | g | 75.12 | k |
2011 | 56.04 | f | 50.52 | g | 57.79 | g | 62.33 | l | 62.65 | k | 66.86 | h | 76.31 | g | 77.60 | j | 74.76 | i | 70.41 | i | 57.61 | b | 53.00 | 55.30 | j | |
2012 | 57.81 | 56.29 | 57.50 | 63.00 | 68.98 | 72.48 | 76.73 | 82.50 | 79.80 | 70.16 | 61.85 | 53.63 | 66.73 | |||||||||||||
2013 | 54.39 | 54.50 | 62.06 | 65.48 | 69.53 | 73.60 | 77.95 | 77.48 | 76.73 | 66.27 | 61.80 | 55.97 | 66.31 | |||||||||||||
2014 | 61.42 | 59.54 | 62.92 | 65.40 | 70.63 | 73.02 | 79.11 | 78.15 | 78.52 | 71.37 | 63.12 | 57.13 | 68.36 | |||||||||||||
2015 | 59.11 | 61.88 | 66.00 | 63.75 | 63.77 | 75.73 | 77.48 | 80.55 | 79.65 | 75.11 | 59.80 | 53.94 | 68.06 | |||||||||||||
2016 | 55.84 | 64.50 | 62.35 | 65.62 | 65.97 | 77.10 | 79.98 | 79.19 | 75.82 | 69.87 | 63.48 | 56.16 | 67.99 | |||||||||||||
2017 | 54.15 | 57.18 | 63.58 | 66.12 | 67.63 | 75.95 | 82.26 | l | 80.87 | 75.30 | 72.34 | 64.60 | 60.00 | 67.06 | a | |||||||||||
2018 | 61.37 | 56.79 | 57.98 | 64.57 | 66.18 | c | 73.48 | 83.79 | 80.27 | 76.42 | 69.53 | 62.69 | a | 56.11 | 67.43 | |||||||||||
2019 | 55.84 | 49.64 | 57.71 | 65.02 | 62.47 | 72.00 | 78.11 | 79.29 | 76.03 | 68.73 | 61.73 | 54.29 | 65.07 | |||||||||||||
2020 | 57.23 | 58.76 | 55.85 | 63.42 | 70.53 | 72.97 | 76.92 | 81.56 | 78.95 | 72.37 | 61.12 | 57.68 | 67.28 | |||||||||||||
2021 | 56.88 | a | 58.50 | 56.37 | 64.63 | 67.56 | 75.32 | 80.65 | 79.24 | 75.60 | 66.34 | 65.58 | 53.16 | 66.65 | ||||||||||||
2022 | 57.61 | 58.96 | a | 62.56 | 64.97 | 67.35 | 77.10 | 78.29 | 81.60 | 80.02 | 70.53 | 56.67 | 53.29 | 67.41 | ||||||||||||
2023 | 52.50 | 52.34 | 53.92 | 63.10 | 64.10 | 66.72 | 80.53 | 79.32 | 72.23 | 70.69 | 62.20 | 58.39 | 64.67 | |||||||||||||
2024 | 55.79 | 55.10 | 57.03 | m | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 55.45 | j | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 54.22 | 55.68 | 57.62 | 61.36 | 65.29 | 71.00 | 76.54 | 77.05 | 73.97 | 67.19 | 59.45 | 54.12 | 64.41 | |||||||||||||
S.D. | 3.26 | 3.18 | 3.42 | 3.44 | 3.06 | 3.52 | 2.42 | 2.71 | 3.01 | 2.98 | 2.96 | 2.67 | 1.94 | |||||||||||||
SKEW | -0.06 | 0.06 | 0.39 | -0.41 | -0.17 | -0.30 | 0.24 | -0.37 | 0.02 | 0.13 | -0.24 | -0.09 | 0.15 | |||||||||||||
MAX | 61.42 | 64.50 | 66.00 | 67.43 | 72.57 | 77.78 | 83.79 | 82.50 | 80.15 | 75.11 | 65.58 | 60.00 | 68.36 | |||||||||||||
MIN | 45.65 | 48.24 | 50.08 | 51.32 | 57.35 | 62.98 | 71.65 | 70.26 | 67.62 | 61.23 | 51.71 | 48.97 | 60.40 | |||||||||||||
YRS | 66 | 66 | 61 | 61 | 61 | 66 | 68 | 73 | 66 | 66 | 68 | 69 | 46 |