YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 87.91 | t | 70.46 | f | 61.36 | i | ----- | z |
1953 | 67.58 | 64.00 | b | 70.10 | 75.37 | 79.32 | 95.17 | 92.42 | 94.42 | e | 95.00 | e | 83.10 | 74.20 | 62.10 | 79.40 | ||||||||||
1954 | 65.93 | a | 72.61 | 68.29 | 82.21 | a | 84.87 | 92.57 | 92.74 | 89.39 | 92.97 | 86.17 | b | 76.70 | j | 67.91 | h | 82.77 | b | |||||||
1955 | 56.16 | l | 64.63 | i | 71.14 | j | 75.57 | i | 79.08 | r | 93.24 | e | 89.05 | l | 85.08 | g | 89.92 | d | 84.83 | a | 71.73 | 69.46 | g | 84.93 | h | |
1956 | 67.93 | c | 59.00 | l | 74.45 | 74.96 | e | 87.19 | d | 96.36 | b | 91.55 | 90.30 | a | 94.79 | b | 82.48 | 69.69 | d | 64.92 | g | 82.97 | b | |||
1957 | 61.00 | 71.67 | a | 67.14 | b | 75.20 | 80.23 | a | 95.24 | a | 93.60 | f | 89.97 | 91.07 | a | 76.26 | 64.27 | 67.00 | a | 76.28 | a | |||||
1958 | 62.52 | 65.29 | 60.39 | 74.73 | 89.35 | 95.40 | 94.00 | 89.06 | 86.67 | 80.35 | 70.34 | a | 72.10 | 78.35 | ||||||||||||
1959 | 67.26 | 62.50 | b | 71.32 | 80.17 | 82.97 | b | 96.00 | 93.19 | 86.48 | 88.97 | 82.77 | a | 68.70 | 61.19 | 78.46 | ||||||||||
1960 | 56.29 | 60.21 | 74.65 | 78.07 | 84.45 | 97.53 | 95.42 | 90.48 | 91.27 | 78.90 | 72.80 | 62.45 | 78.54 | |||||||||||||
1961 | 64.33 | g | 66.38 | b | 69.17 | b | 79.50 | d | 86.34 | b | 96.11 | c | 91.42 | 88.31 | b | 85.83 | 79.38 | b | 65.53 | 62.27 | e | 79.11 | a | |||
1962 | 62.03 | b | 65.85 | a | 63.19 | 81.50 | 83.45 | 92.13 | 92.23 | 95.37 | a | 88.03 | a | 83.32 | 75.10 | 64.81 | d | 78.92 | ||||||||
1963 | 60.39 | c | 70.39 | 70.03 | 76.23 | 88.67 | a | 91.75 | b | 95.70 | a | 87.65 | 90.97 | 85.74 | 71.79 | b | 67.39 | 79.72 | ||||||||
1964 | 61.33 | a | 61.14 | 64.45 | 74.47 | 85.00 | a | 91.73 | 94.17 | a | 86.77 | 85.00 | 83.87 | 67.27 | 63.87 | a | 76.59 | |||||||||
1965 | 65.70 | a | 62.52 | a | 67.63 | d | 74.97 | 81.77 | 88.37 | 92.30 | a | 92.35 | 88.27 | 85.29 | 74.63 | 61.65 | 77.95 | |||||||||
1966 | ----- | z | 58.39 | 72.97 | 79.17 | 87.71 | 94.53 | 94.03 | 89.23 | 86.10 | 81.10 | b | 75.10 | 66.71 | 80.46 | a | ||||||||||
1967 | 66.52 | 69.39 | 75.81 | 75.77 | 83.84 | 90.50 | 90.52 | 92.03 | 88.80 | 86.45 | 75.77 | 60.29 | 79.64 | |||||||||||||
1968 | 63.63 | a | 69.34 | 67.65 | 74.17 | 85.48 | 95.83 | 91.65 | 88.74 | 89.90 | 85.55 | 70.83 | 65.00 | 78.98 | ||||||||||||
1969 | 67.16 | 63.75 | 65.97 | 79.77 | 86.23 | 92.37 | 92.65 | 94.23 | 90.17 | 80.61 | 69.60 | 66.23 | a | 79.06 | ||||||||||||
1970 | 64.81 | 68.46 | 66.65 | 74.41 | a | 87.03 | 94.97 | 95.55 | 92.13 | 87.23 | 78.73 | a | 75.17 | 67.48 | 79.39 | |||||||||||
1971 | 66.94 | 66.00 | 75.42 | 77.00 | a | 82.06 | 93.34 | a | 95.40 | a | 88.35 | 89.10 | 75.81 | 69.83 | 58.55 | 78.15 | ||||||||||
1972 | 63.90 | 69.38 | 80.42 | 81.66 | a | 87.06 | 94.07 | a | 96.42 | 93.00 | 92.17 | 78.81 | 66.17 | 62.65 | 80.47 | |||||||||||
1973 | 60.00 | a | 63.75 | 61.90 | 73.40 | 87.10 | 95.43 | 96.00 | 96.10 | 94.23 | 84.45 | 73.31 | a | 67.55 | 79.44 | |||||||||||
1974 | 63.35 | 67.50 | 74.10 | 80.63 | 87.03 | 100.00 | 93.03 | 93.19 | 88.63 | 79.97 | 70.63 | 61.10 | 79.93 | |||||||||||||
1975 | 63.52 | 64.75 | 69.52 | 71.83 | 84.19 | 95.20 | 92.90 | 95.19 | 89.40 | 83.58 | 73.60 | 65.35 | 79.09 | |||||||||||||
1976 | 66.61 | 68.00 | 71.39 | 76.60 | 86.23 | 96.40 | 90.65 | 93.97 | 86.40 | 78.65 | 71.53 | 64.39 | 79.23 | |||||||||||||
1977 | 60.42 | 70.36 | 66.45 | 79.30 | 82.77 | 96.83 | 94.26 | 93.32 | 91.37 | 81.87 | 73.80 | 68.84 | 79.97 | |||||||||||||
1978 | 62.50 | a | 62.89 | 71.39 | 76.37 | 84.90 | 98.83 | 97.10 | 92.94 | 89.33 | 84.77 | 67.47 | 59.13 | 78.97 | ||||||||||||
1979 | 56.26 | 65.25 | 68.14 | b | 77.10 | 83.77 | 95.00 | 90.32 | 85.94 | 94.50 | 87.10 | 69.40 | 66.16 | 78.24 | ||||||||||||
1980 | 65.55 | 68.14 | 69.06 | 78.30 | 83.10 | 100.17 | 96.65 | 91.26 | 91.53 | 81.87 | 73.87 | 71.35 | 80.90 | |||||||||||||
1981 | 65.42 | 69.29 | 67.48 | 81.50 | 83.39 | 99.87 | 94.55 | 94.58 | 91.20 | 80.68 | 77.37 | 70.13 | 81.29 | |||||||||||||
1982 | 64.83 | a | 68.00 | 71.65 | 81.17 | 84.87 | 94.97 | 94.48 | 92.58 | 90.83 | 83.68 | 69.20 | 60.97 | 79.77 | ||||||||||||
1983 | 63.77 | a | 64.43 | 66.19 | 72.61 | b | 84.45 | k | 86.90 | 94.81 | 91.10 | a | 90.53 | 78.32 | 69.30 | 66.27 | a | 76.75 | a | |||||||
1984 | 63.16 | 67.45 | 73.84 | 76.13 | 91.87 | 92.50 | 90.48 | ----- | z | 90.60 | 76.94 | 71.53 | 62.55 | 77.91 | a | |||||||||||
1985 | 59.81 | 63.89 | 70.35 | 80.17 | 86.58 | 96.83 | 94.26 | 92.94 | 86.37 | 79.23 | 70.17 | 68.32 | 79.08 | |||||||||||||
1986 | 71.90 | 69.07 | 74.03 | 80.67 | 87.45 | 94.67 | 90.81 | 92.65 | 87.60 | 80.65 | 70.73 | 62.81 | 80.25 | |||||||||||||
1987 | 63.03 | 64.43 | 68.71 | 79.97 | 82.81 | 96.27 | 95.68 | 90.55 | 88.07 | 85.55 | 70.40 | 61.93 | b | 78.95 | ||||||||||||
1988 | 64.13 | 69.17 | 73.06 | 77.63 | 87.29 | 96.37 | 93.35 | 90.48 | 88.83 | 85.00 | 72.10 | 64.61 | 80.17 | |||||||||||||
1989 | 62.42 | 71.57 | 78.39 | 86.63 | 89.03 | 96.63 | 97.26 | 93.68 | c | 92.87 | 81.48 | 73.40 | 65.90 | 82.44 | ||||||||||||
1990 | 64.39 | 66.11 | a | 73.47 | a | 80.97 | 85.65 | 100.20 | 89.71 | 88.03 | 87.70 | 83.13 | 72.47 | 63.34 | b | 79.60 | ||||||||||
1991 | 60.77 | 69.92 | c | 67.33 | d | 79.47 | 86.32 | 93.50 | 95.90 | 92.06 | 87.27 | 84.57 | a | 71.36 | b | 61.07 | a | 79.13 | ||||||||
1992 | 59.61 | 65.31 | 68.65 | 80.10 | 85.42 | 95.27 | 94.13 | 91.06 | 93.13 | 86.10 | 69.37 | 62.10 | 79.19 | |||||||||||||
1993 | 62.48 | 64.14 | 72.32 | 80.87 | 88.32 | 95.80 | 92.87 | a | 89.77 | a | 89.33 | 81.90 | 69.87 | 65.94 | 79.47 | |||||||||||
1994 | 67.23 | 65.50 | 72.32 | 79.90 | 85.45 | 98.73 | 97.61 | 95.13 | 90.07 | 80.52 | 67.37 | 63.77 | 80.30 | |||||||||||||
1995 | 62.13 | 69.71 | 72.55 | 76.03 | a | 82.35 | 93.37 | 97.43 | a | 94.55 | 91.87 | 88.00 | 76.20 | 67.84 | 81.00 | |||||||||||
1996 | 69.45 | 71.48 | 72.94 | 82.43 | 91.94 | 97.53 | 95.16 | 92.71 | 87.33 | 83.90 | 74.27 | 68.29 | 82.29 | |||||||||||||
1997 | 62.39 | 66.61 | 77.90 | 75.60 | 91.42 | 94.73 | 97.33 | a | 92.61 | 92.72 | a | 81.35 | 74.72 | a | 57.90 | 80.44 | ||||||||||
1998 | 66.58 | 60.14 | 68.52 | 74.03 | 85.29 | 94.40 | 95.42 | e | 92.87 | 91.97 | a | 83.84 | 74.76 | a | 65.65 | 79.46 | ||||||||||
1999 | 69.58 | 73.36 | 75.42 | 74.60 | 87.48 | 95.47 | 90.35 | 92.77 | 91.77 | 88.13 | a | 81.57 | 66.03 | 82.21 | ||||||||||||
2000 | 71.33 | a | 73.19 | b | 72.42 | 83.73 | 93.32 | 94.80 | 95.32 | 92.32 | 93.97 | 78.87 | 64.73 | 70.55 | 82.05 | |||||||||||
2001 | 60.55 | 65.64 | 71.48 | 78.30 | 91.94 | 97.20 | 93.23 | 93.84 | 93.73 | 85.35 | 75.07 | 62.87 | 80.77 | |||||||||||||
2002 | 65.39 | 68.79 | 73.10 | 83.63 | 88.55 | 99.73 | 94.19 | 93.23 | 92.40 | 80.45 | 75.17 | 62.23 | 81.40 | |||||||||||||
2003 | 72.71 | 65.36 | 69.84 | 78.21 | a | 89.58 | 96.27 | 97.14 | c | 90.90 | 90.93 | 85.90 | 71.79 | a | 68.71 | 81.45 | ||||||||||
2004 | 63.77 | 63.24 | 76.90 | 76.90 | 88.13 | 95.31 | a | 94.06 | 91.94 | 90.46 | b | 80.59 | b | 67.37 | 62.69 | e | 79.28 | |||||||||
2005 | 64.73 | a | 62.65 | b | 69.52 | 77.81 | c | 88.33 | a | 96.17 | g | 98.67 | a | 89.97 | a | 92.17 | 82.67 | a | 76.23 | 68.22 | d | 79.18 | a | |||
2006 | 68.52 | 71.11 | a | 68.77 | 80.55 | a | 90.13 | 97.40 | 94.77 | 87.88 | n | 86.91 | s | 80.95 | l | 75.50 | p | 66.38 | r | 81.61 | e | |||||
2007 | 59.58 | 67.21 | 75.48 | d | 79.92 | e | 87.48 | d | 96.54 | d | 93.44 | f | 90.22 | h | 89.33 | i | 83.58 | 77.23 | 60.90 | 76.44 | c | |||||
2008 | 60.96 | f | 66.85 | c | 74.26 | d | 79.00 | c | 82.91 | i | 97.43 | 89.58 | 89.68 | 89.13 | 84.55 | b | 75.23 | 64.50 | c | 81.02 | b | |||||
2009 | 67.27 | a | 68.96 | b | 75.20 | a | 78.33 | 90.38 | b | 91.30 | c | 97.52 | 96.19 | 91.17 | 79.84 | 76.67 | 62.00 | 81.23 | ||||||||
2010 | 63.79 | b | 59.79 | n | 69.19 | 77.43 | 85.50 | a | 96.67 | c | 94.94 | 93.42 | 92.62 | a | 82.81 | 71.47 | 70.97 | a | 81.71 | a | ||||||
2011 | 66.19 | 64.46 | 77.70 | a | 82.27 | 84.93 | a | 98.73 | 94.90 | b | 96.19 | 93.73 | 85.48 | 70.57 | 58.80 | a | 81.16 | |||||||||
2012 | 69.43 | a | 67.86 | 73.10 | 82.37 | 90.60 | a | 98.57 | 91.77 | 94.87 | 89.10 | 85.65 | 77.10 | a | 65.16 | 82.13 | ||||||||||
2013 | 55.00 | r | 62.00 | a | 77.13 | a | 81.24 | a | 87.44 | d | 100.00 | b | 92.23 | 92.65 | 89.73 | 81.74 | 73.13 | 65.17 | a | 82.04 | a | |||||
2014 | 70.70 | a | 72.93 | a | 74.95 | j | 80.23 | 87.77 | 98.73 | 93.96 | c | 89.32 | 87.14 | a | 84.43 | a | 72.41 | c | 64.32 | 82.00 | a | |||||
2015 | 66.10 | 72.89 | a | 75.84 | 78.67 | 82.90 | 97.27 | 90.52 | 95.70 | a | 88.90 | i | 84.67 | p | 71.00 | d | 63.87 | 79.47 | b | |||||||
2016 | 65.19 | 75.17 | 76.68 | 78.93 | 85.16 | 97.73 | 96.68 | 90.03 | 87.80 | 88.23 | 74.77 | 67.94 | 82.03 | |||||||||||||
2017 | 63.81 | 70.54 | 79.87 | 82.90 | 86.52 | 100.53 | 92.00 | 92.55 | 91.27 | 89.68 | 82.33 | 68.55 | 83.38 | |||||||||||||
2018 | 71.74 | 68.21 | 75.39 | 84.63 | 90.52 | 98.03 | 94.77 | 91.71 | 92.20 | 78.16 | 71.80 | 64.21 | l | 83.38 | a | |||||||||||
2019 | 65.23 | 61.32 | 70.71 | g | 80.03 | 82.23 | 96.27 | 97.61 | 95.26 | 89.17 | 82.48 | 72.60 | 63.70 | a | 80.54 | a | ||||||||||
2020 | 66.48 | 66.55 | 68.97 | 80.67 | 92.16 | 97.17 | 97.94 | 98.87 | 94.17 | 89.35 | 78.07 | 65.26 | 82.97 | |||||||||||||
2021 | 65.06 | 69.46 | 71.03 | 81.67 | 89.23 | 100.47 | 89.74 | 91.06 | 89.30 | 82.74 | 78.90 | 66.74 | 81.28 | |||||||||||||
2022 | 66.71 | 66.93 | 74.03 | 84.20 | 89.90 | 94.93 | 93.90 | 89.23 | 90.90 | 79.13 | 68.73 | 64.42 | 80.25 | |||||||||||||
2023 | 61.45 | 62.19 | a | 68.33 | a | 77.47 | 83.71 | 91.70 | 101.16 | f | 97.79 | b | 95.80 | 87.13 | 75.30 | 68.68 | 79.05 | a | ||||||||
2024 | 63.06 | 67.38 | 68.45 | 74.31 | n | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 66.30 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 64.64 | 66.93 | 71.38 | 78.75 | 86.49 | 95.74 | 94.02 | 92.05 | 90.36 | 82.81 | 72.40 | 64.81 | 80.07 | |||||||||||||
S.D. | 3.49 | 3.63 | 4.17 | 3.13 | 3.06 | 2.80 | 2.36 | 2.71 | 2.51 | 3.18 | 3.66 | 3.26 | 1.42 | |||||||||||||
SKEW | 0.08 | -0.03 | -0.15 | -0.01 | 0.08 | -0.58 | -0.10 | -0.01 | 0.04 | -0.03 | 0.17 | 0.09 | 0.28 | |||||||||||||
MAX | 72.71 | 75.17 | 80.42 | 86.63 | 93.32 | 100.53 | 98.67 | 98.87 | 95.80 | 89.68 | 82.33 | 72.10 | 83.38 | |||||||||||||
MIN | 56.26 | 58.39 | 60.39 | 71.83 | 79.32 | 86.90 | 89.58 | 85.94 | 85.00 | 75.81 | 64.27 | 57.90 | 76.59 | |||||||||||||
YRS | 67 | 69 | 69 | 70 | 68 | 70 | 67 | 67 | 68 | 69 | 69 | 66 | 52 |