YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 85.55 | 82.81 | 86.53 | 78.16 | 63.50 | 58.77 | 75.89 | f | ||||||
1956 | 57.68 | 54.24 | 68.41 | b | 70.97 | a | 84.47 | a | 91.17 | 87.26 | 84.55 | 86.60 | 75.68 | 59.17 | 53.10 | 72.77 | ||||||||||
1957 | 54.84 | 66.71 | 62.94 | 71.66 | a | 75.42 | 89.13 | 89.55 | 82.32 | 82.90 | 68.81 | 57.33 | 57.29 | 71.57 | ||||||||||||
1958 | 53.68 | 59.70 | a | 57.77 | 71.30 | 80.90 | 89.77 | 88.94 | 85.39 | 79.47 | 68.90 | 62.30 | 60.42 | 71.54 | ||||||||||||
1959 | 59.13 | 59.29 | 65.97 | 75.23 | 79.21 | b | 90.23 | 88.53 | a | 81.03 | 82.13 | ----- | z | 60.93 | 54.20 | a | 72.35 | a | ||||||||
1960 | 47.81 | 56.75 | a | 69.65 | 74.60 | 81.23 | 91.43 | 86.03 | 87.32 | 84.47 | 71.61 | 64.97 | a | 50.55 | 72.20 | |||||||||||
1961 | 52.35 | 60.71 | 66.06 | 75.97 | 83.65 | 91.17 | 89.87 | 84.55 | 79.23 | 72.48 | 57.70 | 53.35 | 72.26 | |||||||||||||
1962 | 53.65 | 61.36 | 60.87 | 77.21 | a | 81.19 | 87.03 | 83.81 | 88.90 | 80.77 | 74.45 | 65.24 | a | 53.06 | 72.30 | |||||||||||
1963 | 51.73 | a | 61.19 | a | 65.77 | 73.76 | a | 83.24 | b | 87.53 | 88.55 | 80.87 | 81.10 | ----- | z | ----- | z | 53.87 | 72.76 | b | ||||||
1964 | 52.71 | 54.48 | 61.84 | 69.17 | 81.19 | 86.83 | 87.10 | a | 84.19 | 76.87 | 73.90 | 60.30 | 55.00 | 70.30 | ||||||||||||
1965 | 56.63 | a | 55.89 | 61.45 | 71.73 | 78.13 | 84.97 | 87.26 | 85.00 | a | 77.37 | 74.68 | 65.53 | 52.29 | 70.91 | |||||||||||
1966 | 49.58 | 50.82 | 66.48 | 72.47 | 81.06 | 86.53 | 87.42 | 83.03 | 78.17 | 72.87 | 66.17 | 51.61 | 70.52 | |||||||||||||
1967 | 56.13 | 60.29 | 69.97 | 72.60 | 79.42 | 85.90 | 85.87 | 84.32 | 77.67 | 73.84 | 64.13 | 47.13 | 71.44 | |||||||||||||
1968 | 51.74 | 59.79 | 59.90 | 67.60 | 79.42 | 88.27 | 83.87 | 81.06 | 81.10 | 76.39 | 61.20 | 53.26 | 70.30 | |||||||||||||
1969 | 58.32 | 56.14 | 61.94 | 74.90 | 79.77 | 87.83 | 86.65 | 87.39 | 81.77 | 72.00 | 59.50 | 54.94 | 71.76 | |||||||||||||
1970 | 54.58 | 58.68 | 61.35 | 68.30 | 81.16 | 87.93 | 87.60 | a | 84.06 | 77.30 | 68.84 | 65.37 | 58.45 | 71.14 | ||||||||||||
1971 | 56.87 | 59.50 | 69.55 | 71.77 | 78.10 | 89.03 | 90.23 | 82.57 | a | 80.40 | 67.07 | a | 61.10 | 50.58 | 71.40 | |||||||||||
1972 | 57.19 | 62.79 | 72.61 | 75.77 | 78.90 | 84.73 | 88.00 | 82.06 | 78.60 | 70.23 | 56.63 | 53.61 | 71.76 | |||||||||||||
1973 | 49.06 | 54.11 | 56.52 | 64.70 | 76.97 | 85.63 | 86.19 | 84.87 | 81.53 | 75.52 | 64.37 | 57.16 | 69.72 | |||||||||||||
1974 | 54.39 | 58.39 | 67.48 | 73.13 | 82.19 | 93.10 | 84.68 | 82.55 | 76.97 | 68.81 | 60.28 | a | 50.39 | 71.03 | ||||||||||||
1975 | 53.84 | 56.48 | a | 62.32 | 66.87 | 77.13 | 87.07 | 84.26 | 85.87 | 77.77 | 73.65 | 63.30 | 54.77 | 70.28 | ||||||||||||
1976 | 53.26 | 62.59 | 64.29 | 70.80 | 78.03 | 88.33 | 83.77 | 83.94 | 77.07 | 65.71 | 56.80 | 51.48 | 69.67 | |||||||||||||
1977 | 49.52 | 60.21 | 61.26 | 70.93 | 77.19 | 86.73 | 85.47 | a | 84.58 | 81.97 | 72.58 | 65.57 | 59.58 | 71.30 | ||||||||||||
1978 | 53.77 | 55.57 | 65.10 | 72.97 | 79.10 | 90.33 | 89.84 | 84.00 | 77.83 | 73.84 | 61.23 | 50.65 | 71.19 | |||||||||||||
1979 | 48.23 | 57.82 | 62.61 | 72.83 | 76.23 | 85.33 | 88.83 | a | 83.23 | 83.61 | b | 79.19 | 60.17 | 55.55 | 71.14 | |||||||||||
1980 | 55.35 | 57.83 | 61.45 | 70.70 | 76.84 | 92.97 | 89.58 | 84.48 | 80.63 | 69.74 | 60.93 | 59.23 | 71.64 | |||||||||||||
1981 | 53.61 | 60.93 | 60.39 | 73.43 | 78.45 | 90.23 | 85.19 | 83.74 | 80.67 | 71.42 | 66.80 | 60.81 | 72.14 | |||||||||||||
1982 | 55.87 | 59.33 | a | 65.50 | c | 73.79 | b | 77.77 | 88.23 | 87.67 | a | 84.68 | 81.93 | a | 74.35 | 58.23 | 48.90 | b | 71.35 | |||||||
1983 | 53.06 | 57.25 | 60.29 | 63.70 | 78.06 | 85.90 | 87.87 | 85.00 | 81.93 | 71.37 | a | 60.47 | 56.74 | 70.14 | ||||||||||||
1984 | 53.16 | 58.97 | 66.90 | 70.83 | 84.16 | 84.60 | 85.31 | b | 81.97 | a | 80.93 | 66.48 | 61.57 | 53.65 | 70.71 | |||||||||||
1985 | 50.50 | a | 55.61 | 64.45 | 72.70 | 79.38 | b | 88.86 | a | 88.23 | 85.17 | a | 78.41 | a | 69.19 | 61.23 | 56.00 | 70.81 | ||||||||
1986 | 59.32 | 60.63 | a | 65.35 | 72.90 | 79.26 | 85.03 | 82.13 | 83.16 | 78.73 | 69.29 | 57.80 | 50.03 | 70.30 | ||||||||||||
1987 | 53.06 | 53.89 | 59.94 | 70.10 | a | 73.97 | a | 85.00 | 86.35 | 81.29 | 76.70 | 73.84 | 60.53 | 52.77 | 68.95 | |||||||||||
1988 | 52.65 | 59.07 | 64.07 | a | 70.20 | 78.94 | 86.77 | 85.10 | 80.03 | a | 77.17 | 73.13 | 62.34 | a | 50.29 | 69.98 | ||||||||||
1989 | 50.45 | 58.89 | 68.16 | 76.57 | 81.45 | 87.83 | 87.10 | 80.06 | 79.97 | 70.81 | 62.37 | 52.80 | a | 71.37 | ||||||||||||
1990 | 53.10 | a | 54.82 | 63.50 | a | 72.62 | a | 77.90 | 92.13 | 83.03 | a | 79.10 | 77.10 | 71.06 | 59.67 | 49.90 | 69.50 | |||||||||
1991 | 49.84 | 57.86 | 58.13 | 69.93 | 77.77 | a | 83.77 | 82.39 | 80.77 | 75.80 | 72.45 | 57.69 | a | 48.90 | 67.94 | |||||||||||
1992 | 45.58 | 54.48 | 60.16 | 71.93 | 72.29 | 84.03 | a | 84.81 | 81.66 | b | 80.93 | a | 74.29 | 56.40 | 50.13 | a | 68.06 | |||||||||
1993 | 51.70 | a | 54.07 | a | 63.65 | 71.30 | 78.10 | 87.33 | 84.47 | a | 80.31 | b | 79.27 | 70.39 | 59.20 | 53.00 | 69.40 | |||||||||
1994 | 55.68 | 56.89 | 63.39 | 70.46 | b | 79.33 | a | 91.43 | 89.37 | a | 87.65 | 80.87 | 71.33 | a | 60.55 | a | 53.00 | 71.66 | ||||||||
1995 | 52.71 | 60.74 | a | 63.90 | 69.86 | b | 76.55 | 85.69 | a | 87.43 | a | 86.42 | 80.07 | 75.69 | b | 65.89 | b | 56.53 | a | 71.79 | ||||||
1996 | 58.83 | a | 62.75 | a | 65.10 | 73.83 | 84.84 | 89.33 | 87.18 | c | 83.67 | a | 77.43 | b | 72.06 | 63.64 | b | 56.74 | 72.95 | |||||||
1997 | 51.80 | a | 57.52 | a | 67.19 | 68.67 | 81.06 | 85.83 | a | 87.23 | 83.48 | 81.48 | e | 70.78 | d | 61.29 | b | 46.67 | m | 72.39 | a | |||||
1998 | 56.80 | a | 52.96 | 60.76 | b | 66.66 | a | 79.68 | 87.17 | a | 84.87 | 84.58 | 83.14 | a | 72.65 | 64.45 | a | 54.55 | 70.69 | |||||||
1999 | 58.77 | 63.18 | 67.76 | b | 69.40 | 79.90 | 85.53 | 82.61 | c | 82.10 | 80.13 | 74.77 | a | 68.47 | 52.90 | 72.13 | ||||||||||
2000 | 59.81 | 63.61 | a | 65.57 | a | 76.83 | 86.06 | 85.17 | 86.48 | b | 84.74 | ----- | z | 67.70 | a | 54.59 | a | 55.94 | 71.50 | a | ||||||
2001 | 50.71 | c | 56.68 | 63.45 | 71.97 | 82.10 | 88.15 | d | 83.42 | l | 83.90 | 81.90 | 75.68 | c | 62.66 | a | 52.29 | 69.95 | a | |||||||
2002 | 54.71 | 58.33 | a | 66.37 | a | 76.62 | a | 82.10 | 91.53 | 87.03 | 85.35 | 80.83 | a | 69.71 | 63.03 | 50.68 | 72.19 | |||||||||
2003 | 59.77 | 57.68 | 62.77 | 70.90 | 82.60 | a | 87.33 | 92.16 | 85.84 | 83.17 | a | 77.24 | b | 63.21 | a | 55.03 | b | 73.14 | ||||||||
2004 | 52.62 | b | 55.00 | 67.76 | b | 67.93 | 80.67 | a | 87.86 | h | 87.31 | e | 82.37 | a | 78.36 | b | 71.04 | c | 56.86 | a | 52.77 | e | 68.43 | a | ||
2005 | 55.00 | a | 53.50 | 61.79 | b | 73.67 | c | 82.30 | a | 89.04 | b | 91.20 | a | 83.30 | a | 82.63 | 72.35 | 66.14 | b | 56.17 | g | 73.72 | a | |||
2006 | 59.52 | 64.15 | b | 63.71 | 76.60 | 84.89 | c | 91.07 | a | 88.42 | 79.87 | 76.90 | i | 70.43 | a | 67.87 | o | 53.50 | e | 73.22 | b | |||||
2007 | 47.52 | b | 59.42 | b | 66.10 | b | 72.68 | k | 79.45 | b | 88.40 | 87.23 | 83.58 | 80.93 | 76.00 | a | 67.21 | a | 52.70 | a | 71.69 | a | ||||
2008 | ----- | z | 61.59 | 66.52 | 72.73 | 78.58 | 89.43 | 83.29 | 81.06 | 77.22 | c | 74.03 | a | 66.14 | h | 56.00 | c | 74.05 | b | |||||||
2009 | 58.00 | 64.27 | b | 66.07 | b | 70.71 | b | 80.86 | b | 83.25 | f | 88.82 | n | 86.13 | a | 79.62 | f | 72.81 | 68.05 | h | 52.55 | i | 71.26 | e | ||
2010 | 52.32 | c | 55.86 | 63.10 | a | 71.13 | 79.23 | 88.47 | 85.32 | 84.00 | b | 81.27 | 73.87 | a | 62.40 | 61.40 | f | 72.45 | a | |||||||
2011 | 56.68 | 58.07 | 71.29 | 75.37 | 80.71 | 91.80 | 87.55 | 85.48 | b | 82.62 | a | 75.65 | 63.23 | 52.07 | a | 73.38 | ||||||||||
2012 | 59.94 | 60.48 | 66.61 | 77.17 | 82.73 | a | 92.27 | 85.87 | 86.74 | 80.37 | ----- | z | 66.45 | h | 57.55 | 74.97 | b | |||||||||
2013 | 51.68 | 56.50 | 68.97 | a | 74.34 | a | 80.03 | 92.43 | 85.42 | 83.59 | d | 79.23 | 74.52 | 64.10 | 55.63 | a | 72.20 | |||||||||
2014 | 61.30 | a | 67.57 | 67.55 | 72.07 | 79.74 | 91.13 | 86.87 | a | 81.84 | 80.40 | 76.48 | 64.86 | a | 58.32 | 74.01 | ||||||||||
2015 | 55.27 | a | 66.46 | 67.10 | 72.13 | 76.58 | 90.19 | c | 84.37 | a | 86.19 | 81.70 | 74.06 | 66.79 | a | 56.93 | b | 73.15 | ||||||||
2016 | 54.40 | a | 67.00 | 70.90 | 73.20 | 79.16 | 90.07 | 90.23 | 82.13 | 80.33 | 79.42 | 66.25 | b | 58.18 | c | 74.27 | ||||||||||
2017 | 56.74 | 63.39 | 73.52 | 76.60 | 80.71 | 92.17 | 86.03 | 84.06 | 82.90 | 79.23 | 74.87 | 60.23 | 75.87 | |||||||||||||
2018 | 60.87 | 62.43 | 67.94 | 78.23 | 83.84 | 91.40 | 87.84 | 86.26 | h | 84.07 | o | 72.00 | p | 64.38 | n | 61.55 | t | 76.08 | e | |||||||
2019 | 58.08 | r | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 75.19 | d | 68.38 | n | 63.33 | s | 75.19 | k |
2020 | 59.12 | n | 62.43 | o | 66.27 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 66.27 | k |
2021 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 54.28 | 58.94 | 64.77 | 72.18 | 79.86 | 88.42 | 86.70 | 83.65 | 80.27 | 72.78 | 62.22 | 54.17 | 71.35 | |||||||||||||
S.D. | 3.59 | 3.70 | 3.60 | 3.07 | 2.66 | 2.54 | 2.22 | 2.10 | 2.39 | 3.11 | 3.63 | 3.22 | 1.50 | |||||||||||||
SKEW | -0.07 | 0.32 | 0.09 | -0.34 | -0.06 | 0.06 | 0.05 | 0.03 | 0.34 | -0.01 | 0.49 | 0.17 | 0.28 | |||||||||||||
MAX | 61.30 | 67.57 | 73.52 | 78.23 | 86.06 | 93.10 | 92.16 | 88.90 | 86.60 | 79.42 | 74.87 | 60.81 | 75.87 | |||||||||||||
MIN | 45.58 | 50.82 | 56.52 | 63.70 | 72.29 | 83.77 | 82.13 | 79.10 | 75.80 | 65.71 | 54.59 | 47.13 | 67.94 | |||||||||||||
YRS | 62 | 63 | 64 | 62 | 63 | 61 | 62 | 63 | 60 | 61 | 58 | 59 | 49 |