YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1955 | ----- | z | ----- | z | 66.77 | 66.63 | 78.94 | 84.13 | 88.32 | 93.35 | 90.60 | 79.10 | 63.93 | 57.03 | 76.88 | b | ||||||||||
1956 | 54.71 | 58.24 | 67.32 | 71.50 | 77.19 | 87.90 | 90.35 | 87.19 | 85.43 | 75.16 | 68.63 | 59.06 | 73.56 | |||||||||||||
1957 | 53.74 | 59.57 | 65.16 | 72.93 | 74.74 | 91.40 | 91.16 | 88.87 | 87.77 | 72.90 | 64.67 | 54.19 | 73.09 | |||||||||||||
1958 | 55.45 | 61.36 | 60.65 | 70.90 | 80.13 | 85.13 | 87.84 | 91.74 | 89.97 | 82.42 | 69.40 | 62.84 | 74.82 | |||||||||||||
1959 | 57.00 | 59.25 | 71.35 | 78.83 | 78.06 | 89.27 | 95.26 | 90.58 | 84.27 | 81.83 | a | 70.77 | 60.48 | 76.41 | ||||||||||||
1960 | 54.61 | 60.97 | 67.16 | 72.40 | 77.06 | 91.37 | 94.90 | 91.06 | 88.30 | 76.77 | 63.60 | 54.29 | 74.38 | |||||||||||||
1961 | 47.87 | 62.68 | 65.55 | 73.83 | 75.39 | 91.17 | 96.58 | 90.42 | 86.23 | 79.61 | 64.90 | 53.65 | 73.99 | |||||||||||||
1962 | 52.84 | 55.79 | 63.74 | 77.93 | 76.52 | 87.50 | 91.03 | 89.87 | 85.77 | 73.90 | 68.43 | 53.71 | 73.09 | |||||||||||||
1963 | 51.74 | 66.00 | 64.35 | 64.40 | 75.26 | 84.57 | 89.45 | 89.70 | a | 86.97 | 75.06 | 60.23 | 45.81 | 71.13 | ||||||||||||
1964 | 54.73 | a | 64.66 | 66.35 | 73.07 | 74.81 | 82.63 | 90.65 | 90.23 | 84.33 | 83.19 | 59.60 | 58.23 | a | 73.54 | |||||||||||
1965 | 52.45 | 60.64 | 65.74 | 68.60 | 79.65 | 79.13 | 87.87 | 90.19 | 80.97 | 81.68 | 63.83 | 48.65 | 71.62 | |||||||||||||
1966 | 55.32 | 57.82 | 65.94 | 78.17 | 80.10 | 86.83 | 87.03 | 90.90 | 86.33 | 78.61 | 65.40 | 52.74 | 73.77 | |||||||||||||
1967 | 54.84 | 57.82 | 62.52 | 59.37 | 79.74 | 80.63 | 92.48 | 93.26 | 88.23 | 80.48 | 68.63 | 55.68 | 72.81 | |||||||||||||
1968 | 52.35 | 62.69 | 68.00 | 75.00 | 77.58 | 88.77 | 91.71 | 85.52 | 86.50 | 75.97 | 60.93 | 53.00 | 73.17 | |||||||||||||
1969 | 50.84 | 54.64 | 65.65 | 70.63 | 80.23 | 80.33 | 91.10 | 93.71 | 88.47 | 73.68 | 67.73 | 57.81 | 72.90 | |||||||||||||
1970 | 57.61 | 63.18 | 68.39 | 70.23 | 81.55 | 85.37 | 91.00 | 87.42 | 86.60 | 74.26 | 63.37 | 50.65 | 73.30 | |||||||||||||
1971 | 52.26 | 58.32 | 62.81 | 67.77 | 72.29 | 81.70 | 89.81 | 90.03 | 85.23 | 73.48 | 62.93 | 50.97 | 70.63 | |||||||||||||
1972 | 47.03 | 58.86 | 70.00 | 69.27 | 78.52 | 84.47 | 88.35 | 87.87 | 79.17 | 69.32 | 57.78 | c | 55.67 | s | 71.88 | a | ||||||||||
1973 | ----- | z | 57.75 | 60.26 | 74.20 | 81.52 | 88.33 | 90.39 | 87.71 | 83.83 | 76.16 | 61.70 | 53.87 | 74.16 | a | |||||||||||
1974 | 54.52 | 59.43 | 63.29 | 69.13 | 78.45 | 85.63 | 89.68 | 90.97 | 88.43 | 80.42 | 64.77 | 52.35 | 73.09 | |||||||||||||
1975 | 51.77 | 59.46 | b | 62.16 | 65.28 | a | 80.84 | 84.80 | 88.06 | 88.26 | 88.00 | 74.81 | 64.89 | c | 56.29 | g | 73.48 | a | ||||||||
1976 | 59.68 | 62.14 | 67.10 | 69.87 | 82.90 | 86.63 | 91.35 | 84.39 | 85.30 | 80.13 | 66.27 | 59.77 | 74.63 | |||||||||||||
1977 | 49.61 | 64.39 | 64.81 | 76.63 | 71.59 | b | 88.50 | 92.53 | a | 90.63 | a | 83.93 | 80.20 | a | 68.23 | 58.94 | 74.17 | |||||||||
1978 | 56.94 | 59.61 | 67.90 | 68.80 | 81.94 | 82.90 | a | 89.20 | a | 91.65 | e | 85.10 | 82.90 | 62.52 | a | 50.77 | 73.35 | |||||||||
1979 | 52.87 | 58.14 | 64.23 | 70.83 | a | 81.29 | 89.60 | 90.45 | 89.19 | 91.07 | 77.61 | 62.70 | 56.71 | 73.72 | ||||||||||||
1980 | 55.03 | 60.66 | 64.74 | 71.57 | 76.77 | 81.50 | 89.06 | 87.71 | 84.40 | 80.74 | 68.13 | 55.48 | 72.98 | |||||||||||||
1981 | 53.90 | 62.61 | 63.00 | 74.53 | 81.61 | 94.17 | 92.77 | 91.06 | 86.70 | 74.68 | 65.53 | 56.65 | 74.77 | |||||||||||||
1982 | 50.50 | a | 61.93 | 61.58 | 68.70 | 82.10 | a | 81.10 | 88.48 | 89.84 | 84.00 | 76.03 | 57.00 | a | 54.97 | 71.35 | ||||||||||
1983 | 49.16 | 58.18 | 62.20 | a | 66.37 | 77.84 | 86.33 | 88.74 | 90.77 | 88.60 | 79.19 | 62.24 | a | 56.17 | a | 72.15 | ||||||||||
1984 | 54.00 | 59.93 | 70.16 | 71.27 | 84.35 | 87.53 | 95.35 | 92.77 | a | 92.63 | 73.59 | b | 60.53 | 52.30 | a | 74.54 | ||||||||||
1985 | 47.23 | 63.79 | 62.07 | a | 76.87 | 77.64 | q | ----- | z | 86.50 | y | 88.42 | 82.87 | 77.16 | 62.63 | 48.29 | 67.70 | c | ||||||||
1986 | 58.11 | c | 62.15 | a | 67.32 | 70.31 | a | 79.39 | c | 85.33 | 89.68 | 89.83 | a | 79.90 | 77.67 | a | 69.33 | 53.16 | 73.52 | |||||||
1987 | 53.00 | 60.82 | 63.90 | 77.43 | 82.03 | 87.40 | 85.29 | 89.03 | a | 86.17 | 80.77 | e | 62.90 | 53.55 | 73.52 | |||||||||||
1988 | 53.65 | 64.31 | 68.87 | 72.40 | 76.74 | 85.45 | a | 96.16 | 90.29 | 87.67 | 78.05 | i | 63.33 | c | 55.23 | a | 74.01 | a | ||||||||
1989 | 52.93 | a | 56.00 | 64.00 | b | 74.42 | d | 78.58 | 85.28 | a | 93.29 | 87.93 | a | 81.93 | 75.87 | a | 66.00 | a | 52.90 | 72.43 | ||||||
1990 | 55.37 | a | 57.00 | 66.35 | 75.57 | 78.55 | 85.73 | 93.37 | a | 90.55 | 87.28 | a | 81.10 | b | 65.73 | 53.13 | 74.14 | |||||||||
1991 | 56.39 | 64.22 | a | 60.00 | 68.47 | 76.10 | ----- | z | 91.74 | 87.55 | 89.50 | 82.87 | 67.10 | 54.48 | 72.58 | a | ||||||||||
1992 | 48.52 | 62.28 | 65.65 | 75.00 | 86.06 | 85.13 | 90.00 | 94.03 | 87.60 | 79.68 | 66.07 | a | 52.58 | 74.38 | ||||||||||||
1993 | 54.48 | 58.57 | 67.71 | 70.47 | 77.55 | 87.83 | 92.39 | 92.18 | t | 88.00 | 78.06 | 64.33 | 53.10 | 72.05 | a | |||||||||||
1994 | 56.03 | 56.64 | 68.52 | 73.03 | 77.35 | 87.07 | 91.68 | 92.29 | 86.17 | 76.45 | 57.67 | 51.10 | k | 74.81 | a | |||||||||||
1995 | 55.50 | u | 59.50 | 61.61 | 69.47 | 73.94 | 82.87 | 88.90 | 91.19 | 86.83 | 79.77 | 71.20 | 59.06 | 74.94 | a | |||||||||||
1996 | 56.52 | 60.75 | a | 67.74 | 72.83 | 79.58 | 87.33 | 95.06 | 94.48 | 84.77 | 75.77 | a | 64.97 | 57.48 | 74.77 | |||||||||||
1997 | 54.90 | 61.71 | 69.81 | 74.03 | 85.13 | 86.53 | 92.03 | 88.71 | 88.30 | 76.00 | 65.40 | 53.19 | 74.65 | |||||||||||||
1998 | 54.35 | 56.79 | 65.00 | 67.13 | 67.87 | 78.95 | k | 92.56 | f | 93.48 | 85.46 | b | 74.06 | 61.90 | a | 53.53 | a | 67.96 | b | |||||||
1999 | 52.77 | 59.07 | 61.77 | a | 71.24 | a | 77.29 | 85.31 | a | 87.77 | a | 88.17 | a | 86.21 | a | 80.23 | ----- | z | 59.65 | 73.59 | a | |||||
2000 | 58.17 | a | 59.25 | a | ----- | z | 73.57 | 80.18 | c | 87.83 | ----- | z | 89.23 | a | 84.97 | 73.00 | 59.30 | ----- | z | 73.94 | c | |||||
2001 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 85.36 | b | 79.28 | f | ----- | z | 54.07 | a | 69.71 | j |
2002 | 54.89 | c | ----- | z | 70.92 | r | 78.17 | r | 79.03 | 87.52 | a | 92.16 | 88.68 | 87.55 | a | 76.40 | a | 65.03 | a | 55.97 | 76.36 | c | ||||
2003 | 57.00 | a | 59.82 | 67.16 | 65.10 | ----- | z | ----- | z | 94.00 | 88.03 | 87.17 | a | 81.90 | 60.31 | a | 55.31 | b | 71.58 | b | ||||||
2004 | 52.10 | 59.96 | e | ----- | z | ----- | z | 79.19 | 87.03 | 90.65 | 90.13 | 86.53 | 73.03 | 59.57 | 53.26 | 73.14 | b | |||||||||
2005 | 50.00 | 60.04 | a | 66.90 | 69.03 | 77.29 | 80.90 | 94.42 | 93.31 | o | 81.93 | 76.16 | 66.76 | a | 57.93 | a | 71.03 | a | ||||||||
2006 | 56.79 | b | 61.64 | 60.19 | 68.72 | a | 81.71 | 88.07 | 95.84 | 87.74 | 86.21 | a | 74.77 | a | 63.13 | 58.29 | 73.59 | |||||||||
2007 | 57.23 | 59.61 | 71.55 | 74.47 | 80.68 | 88.19 | c | 91.03 | 89.52 | d | 81.32 | b | 73.56 | d | 66.28 | a | 54.90 | 74.03 | ||||||||
2008 | 52.87 | 60.07 | a | 67.43 | a | 72.69 | a | 80.97 | 87.80 | 91.71 | 92.43 | a | 87.60 | 78.23 | a | 66.79 | a | 52.53 | a | 74.26 | ||||||
2009 | ----- | z | 59.74 | e | 64.24 | j | 72.65 | d | 82.94 | 82.48 | e | 93.25 | c | 90.26 | d | 90.96 | g | 74.22 | v | ----- | z | 53.17 | a | 76.35 | e | |
2010 | 52.73 | e | 59.62 | t | ----- | z | 66.90 | 74.19 | 88.22 | g | 89.94 | 87.16 | 87.20 | 75.48 | b | 64.90 | 58.35 | 72.98 | c | |||||||
2011 | 56.48 | d | 63.96 | 69.48 | d | 79.76 | e | 83.94 | m | 87.27 | d | 90.50 | a | 90.68 | 92.30 | 81.00 | g | 69.00 | e | 63.82 | c | 76.33 | b | |||
2012 | 66.73 | a | 69.05 | h | 67.16 | 74.17 | ----- | z | 87.39 | b | 91.16 | ----- | z | 87.83 | ----- | z | 65.76 | a | 56.03 | 74.53 | d | |||||
2013 | 55.52 | 62.54 | 69.84 | 78.63 | 81.58 | 86.59 | a | 90.35 | 87.84 | 83.67 | 76.03 | 66.70 | 57.52 | 74.73 | ||||||||||||
2014 | 64.94 | 62.57 | 69.13 | 74.40 | 83.65 | 88.23 | 91.13 | 87.77 | 85.97 | 80.23 | 66.47 | 58.00 | 76.04 | |||||||||||||
2015 | 58.81 | 65.71 | 74.45 | 75.13 | 76.16 | 89.70 | 89.84 | 89.68 | 89.48 | a | 82.35 | 62.03 | 54.97 | 75.69 | ||||||||||||
2016 | 56.84 | 66.93 | 67.52 | 74.53 | 79.77 | 89.47 | 91.29 | 88.29 | 86.17 | 73.77 | ----- | z | 55.03 | 75.42 | a | |||||||||||
2017 | 53.84 | 60.29 | 67.74 | 70.23 | 78.38 | o | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 63.02 | h | ||||
2018 | ----- | z | ----- | z | ----- | z | ----- | z | 78.45 | 88.17 | x | ----- | z | 86.55 | ----- | z | 77.25 | w | 67.28 | a | 57.41 | b | 72.42 | h | ||
2019 | 58.94 | 56.04 | 63.74 | 75.00 | b | 74.55 | 89.31 | d | 89.75 | c | 91.52 | 85.27 | 77.77 | 68.73 | 56.77 | 73.95 | ||||||||||
2020 | 57.84 | 66.79 | 64.20 | a | 73.60 | 82.55 | 88.70 | 92.00 | b | 93.52 | 89.23 | 83.65 | 66.37 | 58.90 | 76.45 | |||||||||||
2021 | 59.42 | 63.93 | 66.10 | 75.70 | 83.58 | 88.73 | 93.58 | 91.65 | ----- | z | ----- | z | ----- | z | ----- | z | 77.84 | d | ||||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 54.57 | 60.64 | 65.86 | 71.93 | 78.88 | 86.37 | 91.16 | 89.90 | 86.31 | 77.55 | 64.63 | 55.22 | 73.73 | |||||||||||||
S.D. | 3.64 | 2.82 | 3.11 | 3.95 | 3.41 | 3.04 | 2.40 | 2.15 | 2.69 | 3.30 | 3.28 | 3.32 | 1.29 | |||||||||||||
SKEW | 0.56 | 0.22 | 0.13 | -0.43 | -0.52 | -0.29 | 0.25 | 0.05 | -0.28 | 0.01 | -0.30 | -0.04 | -0.16 | |||||||||||||
MAX | 66.73 | 66.93 | 74.45 | 79.76 | 86.06 | 94.17 | 96.58 | 94.48 | 92.63 | 83.65 | 71.20 | 63.82 | 76.45 | |||||||||||||
MIN | 47.03 | 54.64 | 60.00 | 59.37 | 67.87 | 79.13 | 85.29 | 84.39 | 79.17 | 69.32 | 57.00 | 45.81 | 70.63 | |||||||||||||
YRS | 61 | 61 | 60 | 63 | 61 | 59 | 61 | 62 | 63 | 59 | 61 | 61 | 41 |