YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1972 | 68.90 | 62.96 | c | 72.55 | 77.97 | 82.45 | b | 87.96 | b | 91.03 | a | 92.40 | a | 90.93 | c | 82.20 | a | 69.80 | 67.71 | 78.91 | ||||||
1973 | 64.93 | d | 62.75 | 73.50 | a | 74.17 | a | 80.72 | b | 88.37 | 90.33 | a | 90.23 | a | 88.17 | 84.19 | 75.67 | 64.55 | 78.13 | |||||||
1974 | 73.57 | a | 66.00 | 74.74 | 77.67 | 84.71 | 89.13 | 91.19 | 89.03 | 87.70 | 79.58 | 72.97 | 65.90 | a | 79.35 | |||||||||||
1975 | 66.77 | 69.57 | 70.48 | 75.41 | a | 86.03 | 89.20 | 87.67 | d | 89.19 | 84.97 | 80.48 | 72.03 | 64.32 | 78.01 | |||||||||||
1976 | 60.39 | 70.00 | 73.19 | 79.27 | 80.00 | a | 86.43 | b | 89.81 | 90.23 | 86.27 | 74.45 | 64.07 | 60.52 | 76.22 | |||||||||||
1977 | 53.97 | 62.86 | 72.84 | 80.79 | a | 87.87 | 93.10 | 92.87 | 89.58 | 88.66 | a | 77.87 | a | 71.97 | 63.35 | 77.98 | ||||||||||
1978 | 54.43 | a | 56.04 | b | 67.29 | 79.67 | 84.29 | 90.31 | a | 89.77 | 90.45 | 91.13 | 81.77 | a | 77.45 | a | 67.45 | 77.50 | ||||||||
1979 | 56.90 | 60.18 | 71.10 | 80.07 | 82.77 | a | 89.07 | 89.27 | a | 90.30 | a | 86.10 | 81.23 | a | 74.50 | 64.78 | d | 77.19 | ||||||||
1980 | 64.94 | 60.45 | ----- | z | 75.67 | 82.69 | b | 89.37 | 93.10 | 92.19 | 90.90 | 78.23 | 70.10 | 64.03 | 78.33 | a | ||||||||||
1981 | 58.48 | 65.00 | 70.19 | 81.37 | 82.52 | 93.20 | 91.19 | 88.32 | 88.07 | 81.58 | 73.57 | 62.55 | 78.00 | |||||||||||||
1982 | 64.00 | 69.57 | 72.10 | 76.90 | 85.13 | 89.53 | 88.43 | a | 90.06 | 86.80 | 80.90 | 74.37 | 68.52 | 78.86 | ||||||||||||
1983 | 59.37 | a | 63.68 | 65.65 | 72.93 | 83.42 | 86.60 | 93.32 | 92.48 | 86.70 | 81.80 | a | 70.39 | b | 62.60 | a | 76.58 | |||||||||
1984 | 59.13 | 65.89 | a | 70.52 | 75.53 | 85.61 | 90.00 | 87.90 | 89.74 | 88.77 | 84.75 | c | 70.60 | 73.33 | a | 78.48 | ||||||||||
1985 | 59.27 | a | 66.71 | 75.10 | 78.97 | 85.19 | 88.00 | 88.55 | 88.94 | 87.63 | 84.10 | b | 76.97 | 62.65 | 78.51 | |||||||||||
1986 | 62.69 | b | 68.81 | b | 72.60 | a | 78.00 | 84.45 | 90.70 | 91.42 | 87.97 | b | 89.50 | 81.37 | a | 76.40 | 64.03 | 78.99 | ||||||||
1987 | 61.29 | 63.14 | 71.14 | b | 75.67 | 84.19 | 88.38 | a | 91.67 | a | 90.58 | 86.00 | 77.84 | 72.70 | 68.48 | 77.59 | ||||||||||
1988 | 58.37 | a | 63.14 | a | 70.03 | 77.47 | 83.93 | a | 88.33 | 88.79 | b | 90.00 | 87.20 | 78.39 | 74.53 | 66.00 | 77.18 | |||||||||
1989 | 71.03 | 68.75 | 72.68 | 78.14 | a | 82.90 | 86.83 | 88.97 | 90.23 | 88.73 | 79.69 | b | 72.00 | a | 57.20 | a | 78.10 | |||||||||
1990 | 68.16 | 71.11 | 74.77 | 77.29 | b | 84.42 | 89.66 | a | 91.03 | 93.00 | b | 90.79 | a | 83.10 | 76.43 | 69.35 | 80.76 | |||||||||
1991 | 62.90 | 67.50 | 72.97 | b | 79.97 | 83.97 | 88.20 | 89.52 | 88.87 | 89.70 | 81.03 | 69.10 | 67.90 | 78.47 | ||||||||||||
1992 | 60.80 | a | 67.52 | 71.38 | b | 76.50 | 82.87 | 87.63 | 89.84 | 87.03 | 87.03 | 77.81 | 70.77 | 65.60 | a | 77.06 | ||||||||||
1993 | 67.19 | 64.67 | a | 67.29 | 73.67 | 81.84 | 88.93 | 90.68 | 92.00 | 87.50 | 80.87 | 70.80 | 61.50 | a | 77.24 | |||||||||||
1994 | 60.18 | c | 68.36 | 73.00 | b | 78.80 | 84.19 | 86.03 | 87.10 | a | 87.65 | 85.93 | a | 79.42 | 76.97 | 65.62 | b | 77.77 | ||||||||
1995 | 62.87 | 65.50 | 72.97 | 78.13 | 85.61 | 87.30 | 91.10 | 91.16 | 88.57 | 81.03 | 69.40 | 62.61 | 78.02 | |||||||||||||
1996 | 64.19 | 64.93 | a | 65.87 | 74.73 | 86.23 | 87.53 | 89.16 | 88.06 | 86.43 | 78.42 | 72.00 | 66.52 | 77.01 | ||||||||||||
1997 | 64.77 | 67.93 | 76.55 | 74.83 | 81.13 | 85.60 | 89.23 | 89.53 | a | 86.33 | 76.45 | 65.50 | 58.00 | 76.32 | ||||||||||||
1998 | 62.00 | 61.86 | 64.61 | 74.40 | 82.94 | 88.23 | 88.42 | 88.33 | a | 81.93 | 80.29 | 71.77 | 65.58 | 75.86 | ||||||||||||
1999 | 63.77 | ----- | z | 67.29 | 75.77 | 80.16 | 83.43 | 85.94 | 90.13 | 87.87 | 79.90 | 73.40 | 63.87 | 77.41 | a | |||||||||||
2000 | 63.13 | 68.82 | a | 75.26 | 76.17 | 85.42 | 88.60 | 92.13 | 90.39 | 85.27 | 82.32 | 69.93 | b | 61.38 | b | 78.23 | ||||||||||
2001 | 60.58 | 70.81 | a | 68.03 | a | 79.27 | 84.71 | 86.87 | 89.10 | 88.52 | 85.67 | 78.94 | 77.73 | 68.42 | 78.22 | |||||||||||
2002 | 63.65 | 64.68 | 72.39 | 80.87 | 84.74 | 87.40 | 89.81 | 89.77 | 89.40 | ----- | z | ----- | z | ----- | z | 80.30 | c | |||||||||
2003 | ----- | z | 66.14 | 74.20 | a | 77.11 | b | 85.10 | 86.90 | 88.27 | a | 89.42 | 89.33 | 81.52 | 77.30 | 62.37 | a | 79.79 | a | |||||||
2004 | 62.45 | 60.62 | 74.77 | 76.17 | 84.94 | 88.57 | 91.39 | 90.35 | 86.83 | 82.84 | 74.37 | 62.33 | a | 77.97 | ||||||||||||
2005 | 66.19 | 66.07 | 69.00 | a | 74.27 | 82.42 | 87.97 | 90.45 | 89.52 | 91.55 | a | 81.58 | 75.11 | b | 63.11 | l | 79.47 | a | ||||||||
2006 | 69.07 | a | 65.85 | a | 73.70 | a | 81.20 | 83.74 | 91.03 | 93.06 | 92.68 | 87.73 | 81.00 | 69.26 | c | 69.37 | a | 79.81 | ||||||||
2007 | 64.06 | 64.43 | 76.03 | b | 75.87 | 87.50 | a | 89.87 | 90.53 | a | 93.35 | 90.40 | 82.87 | 73.23 | 70.18 | c | 79.86 | |||||||||
2008 | 61.17 | b | 68.39 | a | 71.10 | 77.83 | 82.77 | 89.27 | 90.00 | 87.71 | 88.47 | 84.40 | p | 70.77 | 68.27 | a | 77.80 | a | ||||||||
2009 | 64.48 | 64.56 | a | 73.19 | 76.53 | 83.58 | 90.93 | 88.87 | 89.87 | 87.97 | 81.45 | 71.33 | 61.87 | 77.89 | ||||||||||||
2010 | 58.58 | 58.86 | 65.70 | h | 79.67 | 86.19 | 91.90 | 92.19 | d | 89.55 | 91.70 | 82.76 | b | 73.37 | 57.32 | 78.37 | a | |||||||||
2011 | 59.56 | f | 65.57 | 73.61 | 80.63 | 83.48 | 91.70 | 90.74 | 93.65 | 87.62 | a | 79.48 | 73.10 | 67.32 | 80.63 | a | ||||||||||
2012 | 66.74 | 67.10 | 78.71 | 78.53 | 87.10 | 86.73 | 89.97 | 86.58 | 87.20 | 80.03 | 69.37 | 67.16 | 78.77 | |||||||||||||
2013 | 67.81 | 65.68 | 66.13 | 77.77 | 81.32 | 88.17 | 86.48 | 88.42 | 89.37 | 83.32 | l | 70.50 | 67.71 | 77.21 | a | |||||||||||
2014 | 55.84 | 66.00 | 68.65 | 74.83 | 83.13 | 88.63 | 89.00 | 92.35 | 87.43 | 81.30 | a | 66.67 | 66.97 | 76.73 | ||||||||||||
2015 | 62.29 | 58.79 | 74.77 | 80.43 | 87.71 | 89.27 | 91.86 | i | 91.68 | 88.30 | 80.81 | 76.27 | 72.87 | 78.47 | a | |||||||||||
2016 | 60.74 | 65.69 | 72.61 | 78.13 | 84.29 | 91.83 | 92.84 | 93.23 | 90.60 | 85.45 | 79.47 | 71.90 | 80.57 | |||||||||||||
2017 | 70.06 | 75.21 | 76.50 | a | 81.13 | 84.81 | 86.57 | 89.90 | 91.16 | 88.93 | 82.52 | 74.67 | 64.84 | 80.53 | ||||||||||||
2018 | 58.71 | 73.92 | b | 72.74 | 77.33 | 86.42 | 89.52 | e | 91.10 | 90.19 | 90.27 | 87.11 | l | 70.87 | 65.16 | 78.75 | a | |||||||||
2019 | 65.52 | 73.75 | 72.55 | 78.63 | 88.26 | 90.73 | 92.35 | 90.73 | e | 92.77 | 85.87 | 69.63 | 68.90 | 80.81 | ||||||||||||
2020 | 67.93 | d | 66.83 | 77.87 | a | 79.37 | 83.87 | a | 89.41 | a | 90.19 | 89.10 | 85.47 | 83.13 | 78.07 | 66.71 | 79.83 | |||||||||
2021 | 62.26 | 67.39 | 74.35 | 76.04 | d | 84.00 | a | 87.63 | 89.81 | 90.57 | a | 88.78 | c | 83.00 | 71.60 | 72.10 | 78.96 | |||||||||
2022 | 63.06 | 68.57 | 73.32 | 79.67 | 84.48 | 91.83 | 89.65 | 89.55 | b | 88.57 | 80.71 | 72.73 | 67.52 | 79.14 | ||||||||||||
2023 | 69.52 | 73.29 | 76.26 | 78.59 | m | 85.10 | 87.17 | r | 92.26 | 95.64 | c | 88.73 | 80.90 | b | 77.44 | u | ----- | z | 82.71 | d | ||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 63.18 | 66.12 | 72.16 | 77.59 | 84.18 | 88.79 | 90.14 | 90.22 | 88.17 | 80.98 | 72.63 | 65.62 | 78.29 | |||||||||||||
S.D. | 4.28 | 3.95 | 3.25 | 2.21 | 1.89 | 1.95 | 1.71 | 1.83 | 2.02 | 2.26 | 3.29 | 3.72 | 1.26 | |||||||||||||
SKEW | 0.09 | -0.03 | -0.47 | -0.10 | -0.02 | 0.09 | -0.16 | 0.56 | -0.20 | -0.31 | -0.16 | -0.17 | 0.27 | |||||||||||||
MAX | 73.57 | 75.21 | 78.71 | 81.37 | 88.26 | 93.20 | 93.32 | 95.64 | 92.77 | 85.87 | 79.47 | 73.33 | 80.81 | |||||||||||||
MIN | 53.97 | 56.04 | 64.61 | 72.93 | 80.00 | 83.43 | 85.94 | 86.58 | 81.93 | 74.45 | 64.07 | 57.20 | 75.86 | |||||||||||||
YRS | 50 | 51 | 50 | 51 | 52 | 51 | 51 | 52 | 52 | 48 | 50 | 49 | 40 |