YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1963 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 95.94 | m | 90.10 | 83.57 | a | 68.90 | 50.29 | 73.21 | h | |||
1964 | 58.35 | 56.46 | a | 69.94 | 81.21 | b | 88.17 | a | 92.07 | 96.67 | a | 95.03 | 83.50 | 75.43 | a | 67.21 | a | 59.35 | 76.95 | |||||||
1965 | 59.94 | 54.21 | 61.61 | 81.57 | 83.13 | 88.17 | 94.71 | 92.06 | 88.00 | 77.94 | 73.27 | 60.30 | a | 76.24 | ||||||||||||
1966 | 50.97 | a | 54.11 | 70.23 | 74.87 | 83.07 | a | 89.57 | 96.94 | 91.16 | 85.07 | 75.71 | 71.63 | 59.45 | 75.23 | |||||||||||
1967 | 60.45 | 61.71 | 77.47 | a | 82.57 | 88.29 | 92.50 | 93.13 | 91.61 | 80.77 | 79.67 | a | 65.47 | 53.55 | 77.26 | |||||||||||
1968 | 53.77 | 57.17 | 62.35 | 74.57 | 85.32 | 91.47 | 90.30 | a | 92.84 | 84.60 | 80.42 | 64.10 | a | 58.48 | 74.62 | |||||||||||
1969 | 61.06 | 61.46 | 61.17 | a | 78.53 | 82.61 | ----- | z | ----- | z | 97.07 | a | 87.53 | 73.33 | a | 64.62 | a | 61.32 | 72.87 | b | ||||||
1970 | 54.35 | 61.46 | 63.10 | 78.37 | 84.68 | 91.53 | 96.61 | 96.65 | 86.20 | 73.55 | 68.57 | 66.29 | 76.78 | |||||||||||||
1971 | 65.03 | 65.50 | 74.16 | 77.37 | 87.71 | 92.27 | 96.32 | 88.06 | 84.87 | 76.39 | 68.03 | 60.72 | b | 78.04 | ||||||||||||
1972 | 63.00 | 66.21 | 77.06 | 86.80 | 84.13 | 94.33 | 92.35 | 89.26 | 88.37 | 77.81 | 61.03 | 59.42 | 78.31 | |||||||||||||
1973 | 53.47 | a | 57.19 | a | 70.81 | 73.53 | 88.19 | 92.47 | 93.81 | 94.13 | 85.83 | a | 79.26 | 72.13 | 64.43 | a | 77.10 | |||||||||
1974 | 59.52 | 67.25 | 79.55 | 81.87 | 89.68 | 96.33 | 96.94 | 90.23 | 77.33 | 75.13 | a | 64.93 | 57.63 | a | 78.03 | |||||||||||
1975 | 59.35 | 61.68 | 70.39 | 78.17 | 86.32 | 94.17 | 90.06 | 92.65 | 83.73 | 78.03 | 69.20 | 60.19 | 77.00 | |||||||||||||
1976 | 59.55 | 71.69 | 72.74 | 78.67 | 82.10 | 92.93 | 85.61 | 92.32 | 83.30 | 70.45 | 58.39 | b | 59.12 | e | 75.57 | |||||||||||
1977 | 52.48 | 63.68 | 70.90 | 75.00 | 84.84 | 93.77 | 96.48 | 98.03 | 95.30 | 80.37 | a | 70.70 | 65.84 | 78.95 | ||||||||||||
1978 | 53.29 | 54.82 | 71.10 | 85.73 | 88.77 | 91.07 | 98.65 | 92.52 | 82.57 | 76.26 | 66.55 | a | 58.17 | a | 76.62 | |||||||||||
1979 | 46.48 | 60.11 | 68.19 | 79.77 | 83.97 | 87.70 | 95.23 | 93.00 | 90.23 | 86.55 | 65.27 | 60.93 | b | 76.45 | ||||||||||||
1980 | 59.61 | 61.03 | 69.13 | 77.77 | 83.42 | 95.23 | 100.77 | 93.58 | 87.37 | 76.48 | 63.43 | 59.40 | a | 77.27 | ||||||||||||
1981 | 56.20 | a | 60.05 | g | 66.95 | i | 77.31 | a | 82.90 | a | 89.00 | 95.03 | 93.32 | 89.87 | 76.33 | d | 72.66 | a | 64.29 | 79.69 | b | |||||
1982 | 60.74 | 57.86 | 72.39 | c | 79.68 | e | 82.68 | c | 92.71 | b | 96.41 | b | 96.93 | c | 91.15 | c | 79.93 | c | 67.00 | e | 57.54 | e | 77.92 | |||
1983 | 57.80 | f | 63.27 | f | 70.11 | d | 79.08 | d | 88.58 | g | 89.96 | e | 95.52 | h | 97.52 | d | 90.92 | d | 79.42 | e | 69.38 | f | 50.38 | e | 79.63 | e |
1984 | 50.33 | g | 64.60 | d | 70.73 | e | 81.68 | e | 88.00 | e | 93.23 | d | 94.52 | f | 95.85 | d | 86.33 | f | 72.52 | d | 65.72 | e | ----- | z | 79.04 | d |
1985 | ----- | z | 63.93 | m | 68.52 | 79.20 | 87.26 | 87.72 | a | 90.81 | 94.58 | 85.33 | 73.90 | 69.38 | a | 56.42 | 79.31 | b | ||||||||
1986 | 60.13 | a | 66.21 | 72.57 | a | 82.20 | 85.26 | 86.07 | 92.10 | 90.17 | a | 84.83 | 70.86 | b | 64.63 | 52.74 | 75.65 | |||||||||
1987 | 56.06 | 58.19 | a | 61.84 | 73.10 | a | 81.31 | b | 84.90 | a | 90.23 | 93.10 | 86.33 | 78.65 | 66.97 | a | 60.07 | a | 74.23 | |||||||
1988 | 52.48 | 60.82 | a | 71.00 | a | 80.57 | 83.71 | 90.40 | 89.61 | 92.13 | 87.10 | a | 78.77 | a | 72.23 | 59.74 | 76.55 | |||||||||
1989 | 61.07 | b | 56.86 | 70.97 | 81.03 | 91.10 | 91.13 | 95.63 | a | 92.21 | c | 86.66 | a | 80.68 | 68.63 | 51.61 | 77.30 | |||||||||
1990 | 62.03 | 66.57 | 65.67 | a | 76.34 | a | 83.71 | 96.17 | 88.70 | a | 89.19 | 85.23 | 75.90 | b | 66.83 | a | 57.13 | 76.12 | ||||||||
1991 | 53.00 | 64.86 | 72.45 | 81.17 | 88.19 | e | 91.57 | 91.97 | 91.77 | 80.73 | 79.39 | 61.53 | 56.74 | 76.11 | ||||||||||||
1992 | 54.52 | 62.93 | 71.74 | 75.90 | 80.73 | a | 91.00 | 91.81 | 89.94 | 89.53 | 82.71 | 64.07 | 58.39 | 76.11 | ||||||||||||
1993 | 55.16 | 62.04 | 70.03 | 79.97 | 87.16 | 90.67 | 93.97 | 96.13 | 84.73 | 77.77 | 63.72 | a | 60.74 | 76.84 | ||||||||||||
1994 | 57.43 | a | 60.89 | 72.10 | 80.40 | 83.94 | 97.27 | 98.13 | a | 96.03 | 87.93 | 78.61 | 68.57 | 61.32 | 78.55 | |||||||||||
1995 | 58.77 | 67.43 | 68.93 | a | 78.83 | a | 85.45 | 85.20 | 93.39 | 89.00 | 81.63 | 77.23 | 63.73 | 55.26 | 75.40 | |||||||||||
1996 | 55.81 | 61.52 | 62.03 | 73.87 | 88.48 | 91.53 | 91.76 | b | 86.81 | 79.07 | 74.84 | 66.90 | a | 61.74 | 74.53 | |||||||||||
1997 | 53.24 | b | 55.79 | 71.19 | 70.93 | 82.77 | 89.07 | a | 96.52 | 95.30 | a | 90.43 | 79.55 | 66.20 | 56.47 | a | 75.62 | |||||||||
1998 | 64.87 | 65.11 | 69.55 | 81.13 | 96.10 | 99.10 | 100.03 | 92.03 | 92.04 | b | 78.65 | 68.45 | a | 58.57 | a | 80.47 | ||||||||||
1999 | 65.90 | b | 70.04 | 71.10 | a | 80.57 | 87.03 | 89.38 | a | 91.41 | d | 98.03 | a | 90.40 | 81.00 | j | 75.85 | j | 63.39 | h | 82.65 | c | ||||
2000 | 64.81 | j | 72.00 | g | 77.04 | h | 83.56 | l | 97.73 | i | 86.86 | h | 98.29 | g | 97.08 | e | 94.08 | f | 74.71 | g | 62.11 | l | ----- | z | 97.08 | k |
2001 | ----- | z | 53.84 | i | 65.24 | n | 80.15 | j | 89.82 | i | 97.71 | p | 98.81 | j | 95.14 | j | 89.09 | s | 80.91 | i | 69.60 | j | 61.21 | l | ----- | z |
2002 | 62.50 | i | ----- | z | ----- | z | 83.68 | h | 90.38 | j | ----- | z | ----- | z | 97.94 | m | 88.89 | k | ----- | z | 60.36 | p | ----- | z | ----- | z |
2003 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2004 | ----- | z | ----- | z | ----- | z | ----- | z | 92.00 | v | 92.30 | c | 94.60 | p | 90.26 | h | 83.52 | g | 77.07 | c | 63.96 | c | 58.41 | d | 72.93 | h |
2005 | 64.33 | p | 61.79 | i | 68.77 | 79.23 | 82.48 | d | 89.96 | g | 93.97 | a | 92.21 | c | 92.96 | d | 77.07 | c | 72.36 | b | 60.12 | e | 79.91 | c | ||
2006 | 67.79 | b | 64.14 | f | 74.13 | a | 84.00 | c | 91.72 | b | 94.52 | a | 94.41 | b | 94.13 | 85.00 | b | 79.17 | h | 71.08 | f | 59.07 | c | 82.75 | c | |
2007 | 46.80 | a | 61.09 | f | 71.24 | j | 73.24 | i | 78.67 | p | 87.67 | o | 87.89 | l | 89.35 | h | 88.19 | i | 82.00 | t | 69.44 | l | 58.85 | k | 46.80 | k |
2008 | 56.95 | i | 70.38 | u | 71.76 | n | 83.05 | h | 89.86 | j | 97.00 | k | 89.09 | t | 92.68 | l | 81.77 | q | 77.72 | m | 70.13 | 61.77 | i | 70.13 | k | |
2009 | 63.72 | b | 70.39 | e | 66.88 | o | 80.31 | q | 88.25 | s | 93.95 | j | 93.64 | c | 95.77 | a | 85.03 | 76.89 | c | 70.19 | i | 53.90 | b | 77.05 | e | |
2010 | 58.04 | f | 55.79 | 68.10 | 75.43 | 85.81 | 95.47 | 87.23 | 95.93 | a | 90.07 | 81.90 | a | 70.83 | 63.55 | 79.10 | a | |||||||||
2011 | 58.16 | 63.11 | 78.13 | 87.60 | 89.00 | 97.59 | h | 96.55 | 98.32 | 92.30 | 79.74 | 69.70 | 52.77 | 78.67 | a | |||||||||||
2012 | 62.06 | 61.59 | 73.19 | 84.60 | 84.97 | 94.27 | 93.52 | 94.29 | 86.37 | 74.35 | 73.47 | 64.33 | a | 78.92 | ||||||||||||
2013 | 58.19 | 63.93 | 72.10 | a | 80.40 | 85.65 | 91.77 | 89.68 | 94.03 | 87.10 | 77.90 | 62.07 | 58.87 | 76.81 | ||||||||||||
2014 | 62.81 | 64.96 | 74.83 | a | 82.47 | 87.29 | 89.53 | 91.19 | 93.16 | 85.03 | 83.90 | a | 65.27 | 64.77 | 78.77 | |||||||||||
2015 | 56.55 | 60.43 | 61.73 | p | 81.20 | 82.48 | b | 86.53 | 92.90 | 96.35 | 90.17 | a | 80.33 | a | 67.27 | 64.29 | 78.05 | a | ||||||||
2016 | 60.61 | 70.14 | 74.97 | 79.70 | 82.90 | a | 88.07 | 95.35 | 94.47 | n | 88.70 | g | 84.00 | 70.63 | 63.94 | 77.03 | b | |||||||||
2017 | 64.77 | 73.14 | 79.29 | 82.73 | 87.10 | 94.20 | 93.23 | 89.65 | 90.76 | a | 80.52 | b | 75.03 | 60.68 | 80.92 | |||||||||||
2018 | 59.32 | 67.32 | 76.48 | 83.10 | 91.39 | 96.73 | 95.90 | 93.10 | 82.23 | 72.42 | 66.70 | 58.00 | 78.56 | |||||||||||||
2019 | 58.81 | 65.71 | 68.16 | 80.33 | 80.48 | 90.57 | 93.45 | 98.23 | 91.27 | 81.23 | 64.90 | 63.77 | 78.08 | |||||||||||||
2020 | 60.65 | 58.55 | 72.06 | 77.03 | 87.39 | 91.23 | 96.81 | 96.65 | 83.93 | 79.27 | a | 71.90 | 60.71 | 78.01 | ||||||||||||
2021 | 54.65 | 68.83 | v | 70.16 | 73.20 | 81.11 | m | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 66.00 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 58.15 | 62.50 | 70.69 | 79.41 | 85.81 | 91.63 | 93.83 | 93.58 | 86.75 | 77.97 | 67.45 | 59.22 | 77.08 | |||||||||||||
S.D. | 4.70 | 4.83 | 4.45 | 3.60 | 3.21 | 3.18 | 3.21 | 2.90 | 3.81 | 3.39 | 3.64 | 3.87 | 1.53 | |||||||||||||
SKEW | -0.34 | 0.16 | -0.34 | -0.11 | 0.72 | -0.01 | -0.23 | -0.22 | -0.15 | 0.01 | -0.05 | -0.42 | 0.37 | |||||||||||||
MAX | 67.79 | 73.14 | 79.55 | 87.60 | 96.10 | 99.10 | 100.77 | 98.32 | 95.30 | 86.55 | 75.03 | 66.29 | 80.92 | |||||||||||||
MIN | 46.48 | 54.11 | 61.17 | 70.93 | 80.48 | 84.90 | 85.61 | 86.81 | 77.33 | 70.45 | 58.39 | 50.29 | 74.23 | |||||||||||||
YRS | 47 | 45 | 48 | 50 | 48 | 47 | 47 | 50 | 49 | 50 | 49 | 50 | 37 |