YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1970 | ----- | z | 63.36 | 68.55 | 71.17 | 80.32 | 84.90 | 91.33 | a | 89.52 | 90.53 | 75.42 | 65.80 | 53.94 | 75.89 | a | ||||||||||
1971 | 55.55 | 60.93 | 65.39 | 68.83 | 74.10 | 84.90 | 90.84 | 91.68 | 88.83 | 76.71 | 65.57 | 54.19 | 73.13 | |||||||||||||
1972 | 52.35 | 62.24 | 72.32 | 72.70 | 81.29 | 87.90 | 89.84 | 89.94 | 82.80 | 73.23 | 59.93 | 51.06 | 72.97 | |||||||||||||
1973 | 54.74 | 60.50 | 63.39 | 75.77 | 82.81 | 91.27 | 90.90 | 88.70 | a | 84.80 | 77.10 | 61.77 | 56.26 | 74.00 | ||||||||||||
1974 | 57.10 | 60.32 | 64.55 | 71.13 | 79.74 | 87.23 | 90.68 | 89.35 | 87.33 | 79.94 | 63.80 | 55.55 | 73.89 | |||||||||||||
1975 | 54.81 | 60.50 | 64.57 | a | 65.63 | 82.23 | 85.70 | 88.90 | a | 89.39 | 86.10 | a | 74.55 | 64.20 | 59.58 | 73.01 | ||||||||||
1976 | 60.70 | a | 62.11 | a | 67.58 | 72.57 | 82.55 | 84.96 | c | 91.30 | u | 85.77 | a | 84.37 | 80.00 | b | 67.24 | a | 58.81 | 73.33 | a | |||||
1977 | 51.90 | 63.81 | a | 64.54 | c | 78.30 | 74.90 | 86.10 | a | 90.94 | 88.10 | 81.71 | b | 77.29 | 67.52 | a | 58.03 | a | 73.60 | |||||||
1978 | 56.71 | 60.19 | a | 67.37 | a | 68.60 | 82.10 | 84.25 | b | 90.74 | 90.37 | a | 85.93 | 79.32 | 62.30 | 51.29 | 73.26 | |||||||||
1979 | 53.23 | 59.18 | 64.48 | 69.90 | a | 80.20 | a | 88.07 | a | 89.58 | 88.10 | 89.50 | 76.32 | 62.63 | 57.55 | 73.23 | ||||||||||
1980 | 55.53 | a | 62.07 | 65.90 | a | 71.93 | 75.61 | 81.33 | 88.68 | 85.32 | 83.67 | 78.87 | 67.23 | 55.61 | 72.65 | |||||||||||
1981 | 54.65 | 61.79 | 64.13 | 74.93 | 81.06 | 92.43 | 89.77 | 88.42 | 84.40 | 72.65 | 65.03 | 58.23 | 73.96 | |||||||||||||
1982 | 51.37 | a | 61.54 | 61.77 | a | 69.00 | 79.29 | 78.40 | 88.16 | 87.84 | 83.47 | 75.84 | 57.47 | 55.45 | 70.80 | |||||||||||
1983 | 51.55 | 59.82 | 63.61 | 67.17 | 78.35 | 86.03 | 88.94 | 89.65 | 87.48 | a | 77.97 | 61.93 | b | 57.30 | a | 72.48 | ||||||||||
1984 | 55.48 | 60.52 | 70.42 | 72.20 | 84.55 | 86.73 | 92.16 | 90.52 | 91.87 | 73.65 | 61.21 | a | 52.58 | 74.32 | ||||||||||||
1985 | 49.65 | 64.36 | 63.52 | 77.75 | b | 77.97 | 88.97 | 90.19 | 86.19 | 80.47 | 75.71 | 59.80 | 48.74 | 71.94 | ||||||||||||
1986 | 57.29 | 63.85 | a | 69.29 | 73.00 | 79.45 | 84.23 | 88.13 | 88.06 | 79.67 | 77.55 | 68.93 | 53.61 | 73.59 | ||||||||||||
1987 | 54.97 | 62.36 | 66.84 | 79.57 | 84.26 | 85.87 | 85.94 | 87.68 | 86.00 | 78.06 | 63.27 | 55.67 | a | 74.21 | ||||||||||||
1988 | 55.57 | a | 65.93 | 72.10 | 72.53 | 77.71 | 85.87 | 94.16 | 87.42 | 85.73 | 75.81 | 62.83 | 57.43 | c | 74.42 | |||||||||||
1989 | 55.00 | 56.79 | 64.94 | 75.00 | 79.26 | 83.23 | 90.84 | 86.06 | 79.90 | 74.55 | 65.83 | 54.14 | b | 72.13 | ||||||||||||
1990 | 56.13 | 58.04 | 66.68 | 75.50 | 78.13 | 86.57 | 88.94 | 87.87 | 86.23 | 79.77 | 65.30 | 52.84 | 73.50 | |||||||||||||
1991 | 56.61 | 64.11 | 60.43 | a | 70.43 | 76.10 | 82.40 | 87.45 | 84.52 | 85.00 | 80.71 | 66.93 | 56.55 | 72.60 | ||||||||||||
1992 | 51.03 | a | 63.59 | 66.16 | 75.90 | 83.52 | 82.20 | 87.26 | 90.19 | 85.53 | 78.87 | 66.47 | 54.26 | 73.75 | ||||||||||||
1993 | 54.00 | 58.54 | 67.35 | 71.20 | 77.13 | 87.59 | a | 87.94 | 88.23 | 85.70 | 76.71 | 64.70 | 53.55 | 72.72 | ||||||||||||
1994 | 57.35 | 58.89 | 68.90 | 72.97 | a | 76.61 | 86.20 | 86.10 | 90.84 | 83.23 | 75.03 | 57.47 | 52.13 | 72.14 | ||||||||||||
1995 | 57.39 | 60.82 | 63.26 | 69.63 | 73.77 | 82.07 | 88.61 | 89.74 | 85.07 | 79.00 | 70.33 | 59.90 | a | 73.30 | ||||||||||||
1996 | 57.03 | 62.00 | a | 68.20 | a | 74.83 | 79.68 | 87.50 | 92.23 | 90.19 | 82.70 | 75.81 | 64.69 | a | 59.45 | 74.53 | ||||||||||
1997 | 55.68 | 63.68 | 70.58 | 75.47 | 85.87 | 85.93 | 89.42 | 86.45 | 88.10 | 74.94 | 64.47 | 56.00 | a | 74.72 | ||||||||||||
1998 | 56.00 | a | 57.52 | a | 64.42 | 68.37 | 68.19 | 77.93 | 87.74 | 91.13 | 82.17 | 73.42 | 62.03 | 54.34 | b | 70.27 | ||||||||||
1999 | 53.80 | a | 57.81 | a | 60.23 | 69.37 | 73.48 | 81.93 | 82.90 | 83.81 | 82.67 | 78.29 | 65.33 | 59.68 | 70.78 | |||||||||||
2000 | 58.23 | a | 59.48 | 66.60 | a | 72.70 | 78.06 | 85.17 | 84.87 | 87.43 | a | 84.63 | 72.58 | 59.57 | 57.06 | 72.20 | ||||||||||
2001 | 55.81 | 59.00 | 69.26 | 68.73 | 86.52 | 88.53 | 85.23 | 87.29 | 82.47 | 77.00 | 65.00 | 55.74 | 73.38 | |||||||||||||
2002 | 54.29 | 62.36 | 64.58 | 69.53 | 77.39 | 86.10 | a | 87.71 | 86.23 | 85.63 | 75.32 | 66.00 | 58.10 | 72.77 | ||||||||||||
2003 | 57.23 | 61.18 | 67.32 | 65.27 | 76.55 | 84.93 | 92.19 | 87.19 | 85.87 | 80.13 | 61.20 | 55.48 | 72.88 | |||||||||||||
2004 | 54.39 | 59.00 | 73.52 | 75.50 | 79.74 | 84.67 | 87.39 | 87.93 | a | 86.80 | 73.40 | a | 61.70 | 56.19 | 73.35 | |||||||||||
2005 | 51.40 | a | 60.71 | 66.77 | a | 69.63 | 76.16 | 80.87 | 91.16 | 88.03 | 80.87 | 75.03 | 66.80 | 58.69 | b | 72.18 | ||||||||||
2006 | 57.84 | 62.71 | 59.97 | 67.27 | 79.87 | 87.13 | 94.16 | 85.90 | 82.00 | 73.90 | 63.43 | 56.86 | b | 72.59 | ||||||||||||
2007 | 56.94 | 60.71 | 70.52 | 73.40 | 80.29 | 86.73 | 89.03 | 88.84 | 81.37 | 72.16 | 66.27 | 55.35 | 73.47 | |||||||||||||
2008 | 54.28 | b | 60.48 | 67.23 | 73.07 | 80.26 | 88.53 | 89.10 | 90.74 | 85.07 | 77.16 | 65.77 | 52.90 | 73.71 | ||||||||||||
2009 | 59.55 | 58.86 | 64.87 | 71.33 | 80.52 | 83.33 | 88.84 | 88.77 | 87.33 | 72.58 | 64.67 | 53.35 | 72.83 | |||||||||||||
2010 | 54.03 | 60.30 | a | 65.26 | 66.93 | 73.61 | 85.80 | 85.45 | 84.48 | 84.90 | 73.94 | 63.70 | 56.48 | 71.24 | ||||||||||||
2011 | 53.68 | 59.61 | 61.70 | a | 69.37 | 75.13 | 80.77 | 86.74 | 85.65 | 84.83 | 74.87 | 60.67 | 58.00 | 70.92 | ||||||||||||
2012 | 59.84 | 60.34 | 62.90 | 70.70 | 80.48 | 85.34 | a | 88.23 | 88.52 | 82.77 | 75.00 | 66.40 | o | 56.13 | 73.66 | a | ||||||||||
2013 | 55.55 | 61.93 | 68.19 | 76.10 | 81.90 | 86.27 | 89.71 | 87.03 | 82.73 | 74.87 | 67.23 | 57.87 | 74.12 | |||||||||||||
2014 | 65.00 | 61.79 | 68.48 | 72.20 | 81.97 | 86.47 | 87.10 | a | 85.13 | 83.63 | 78.97 | 66.37 | 59.87 | 74.75 | ||||||||||||
2015 | 58.33 | a | 66.71 | 71.87 | 73.57 | 75.16 | 87.80 | 88.35 | 86.77 | 87.97 | a | 80.26 | 63.27 | 55.97 | 74.67 | |||||||||||
2016 | 56.87 | 65.83 | 66.13 | 72.77 | 78.71 | 87.93 | a | 89.32 | 85.00 | 84.07 | 73.45 | 65.30 | 55.94 | 73.44 | ||||||||||||
2017 | 54.58 | 59.75 | 66.71 | 69.30 | 79.81 | 86.43 | 92.29 | 87.23 | 86.23 | 78.42 | 64.50 | 59.90 | 73.76 | |||||||||||||
2018 | 58.03 | 64.41 | a | 63.13 | 70.20 | 77.13 | 85.73 | 90.23 | 86.58 | 82.83 | 77.77 | ----- | z | 58.17 | a | 74.02 | a | |||||||||
2019 | 57.68 | 55.96 | 63.55 | 73.40 | 72.52 | 86.80 | 88.81 | 87.90 | ----- | z | ----- | z | ----- | z | ----- | z | 73.33 | d | ||||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 55.65 | 61.17 | 66.20 | 71.85 | 78.84 | 85.48 | 89.09 | 87.87 | 84.75 | 76.32 | 64.12 | 55.95 | 73.07 | |||||||||||||
S.D. | 2.73 | 2.36 | 3.19 | 3.24 | 3.61 | 2.82 | 2.29 | 1.91 | 2.65 | 2.40 | 2.79 | 2.56 | 1.10 | |||||||||||||
SKEW | 0.52 | 0.21 | 0.22 | 0.18 | -0.32 | -0.47 | -0.14 | -0.07 | 0.36 | 0.10 | -0.40 | -0.48 | -0.69 | |||||||||||||
MAX | 65.00 | 66.71 | 73.52 | 79.57 | 86.52 | 92.43 | 94.16 | 91.68 | 91.87 | 80.71 | 70.33 | 59.90 | 74.75 | |||||||||||||
MIN | 49.65 | 55.96 | 59.97 | 65.27 | 68.19 | 77.93 | 82.90 | 83.81 | 79.67 | 72.16 | 57.47 | 48.74 | 70.27 | |||||||||||||
YRS | 49 | 50 | 50 | 50 | 50 | 50 | 49 | 50 | 49 | 49 | 47 | 49 | 45 |