YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1987 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 49.56 | g | ----- | z |
1988 | 51.38 | a | 59.70 | f | 62.00 | f | 70.41 | a | 78.43 | a | 88.72 | a | 92.19 | 89.15 | e | 82.60 | a | 77.77 | a | 61.19 | a | 52.78 | a | 74.46 | b | |
1989 | 50.18 | a | 58.68 | 67.69 | 77.43 | 80.72 | a | 87.62 | 93.52 | a | 89.34 | 86.10 | a | 73.03 | a | 63.04 | b | 53.05 | c | 73.37 | ||||||
1990 | 51.87 | a | 54.30 | 63.58 | a | 71.89 | b | 77.74 | b | 90.27 | 88.93 | b | 85.73 | a | 84.81 | a | 74.48 | b | 63.33 | a | 50.88 | b | 71.48 | |||
1991 | 52.22 | b | 61.00 | f | 56.41 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 56.58 | l | 53.37 | a | 54.00 | i |
1992 | 51.84 | 57.52 | 59.19 | d | 71.45 | b | 78.58 | e | 86.52 | 90.00 | b | 88.22 | f | 86.13 | 75.07 | c | 56.82 | b | 50.60 | a | 69.43 | a | ||||
1993 | 55.00 | b | 54.88 | 61.30 | a | 69.32 | 79.91 | b | 86.12 | b | 89.38 | b | 88.15 | e | 83.07 | a | 74.32 | a | 58.81 | a | 52.66 | 71.08 | ||||
1994 | 52.97 | ----- | z | 63.86 | b | 71.23 | 77.26 | b | 91.29 | d | 92.55 | a | 93.55 | a | 85.94 | f | 71.52 | a | 57.23 | 52.82 | a | 72.43 | b | |||
1995 | 52.55 | 60.38 | 61.68 | a | 67.38 | a | 74.54 | c | 84.93 | c | 92.35 | d | 92.17 | d | 87.16 | a | 75.18 | a | 65.20 | 55.21 | c | 72.39 | ||||
1996 | 55.00 | a | 61.03 | 62.72 | b | 72.16 | a | 82.16 | b | 90.62 | a | 93.78 | a | 91.07 | a | 81.29 | b | 73.32 | c | 63.09 | a | 54.55 | c | 73.40 | ||
1997 | 54.33 | a | 57.27 | b | 67.00 | c | 72.11 | g | 84.26 | 86.78 | 92.35 | 91.02 | d | 87.52 | b | 73.29 | 62.85 | 50.14 | b | 73.35 | a | |||||
1998 | 54.53 | 51.48 | c | 58.98 | 63.53 | a | 75.00 | 84.38 | 91.85 | 92.21 | b | 86.70 | b | 73.63 | a | 61.88 | a | 53.13 | 70.61 | |||||||
1999 | 55.55 | b | 60.11 | 64.48 | b | 66.14 | b | 78.32 | 87.43 | 89.05 | a | 90.03 | b | 85.65 | 77.00 | d | 66.88 | a | 52.90 | 72.80 | ||||||
2000 | 57.00 | a | 59.68 | a | 62.57 | b | 74.21 | a | 83.97 | b | 89.18 | b | 93.57 | a | 89.85 | a | 87.62 | a | 72.05 | b | 53.73 | 54.17 | d | 73.13 | ||
2001 | 52.02 | 53.56 | b | 62.88 | b | 69.72 | a | 83.84 | 89.52 | 90.78 | k | 90.18 | c | 88.45 | 76.52 | 65.61 | c | 50.43 | b | 71.16 | a | |||||
2002 | 53.52 | d | 58.44 | a | 62.07 | c | 74.41 | a | 78.81 | b | 91.40 | d | 91.84 | c | 91.00 | b | 86.29 | b | 71.19 | b | 62.76 | e | 52.09 | c | 72.82 | |
2003 | 58.17 | a | 56.63 | a | 61.84 | b | 68.22 | 79.90 | a | 87.34 | a | 93.12 | f | 90.36 | b | 86.55 | a | 79.82 | 60.19 | a | 54.17 | b | 71.20 | a | ||
2004 | 54.12 | b | 52.24 | f | 68.69 | d | 70.79 | b | 80.33 | a | 87.48 | 90.67 | b | 89.57 | a | 84.27 | 72.12 | b | 58.07 | 53.12 | b | 73.57 | a | |||
2005 | 54.27 | 55.40 | c | 59.45 | c | 69.43 | a | 79.50 | 87.53 | a | 92.94 | 85.88 | b | 85.20 | 74.42 | 63.56 | c | 53.53 | b | 71.76 | ||||||
2006 | 54.76 | b | 58.98 | 60.39 | 69.89 | b | 81.38 | a | 90.27 | b | 91.00 | c | 86.84 | 81.38 | 72.87 | a | 64.56 | c | 52.10 | b | 72.03 | |||||
2007 | 50.60 | a | 57.89 | a | 66.05 | 70.81 | c | 81.07 | b | 88.29 | a | 91.38 | b | 91.39 | 84.98 | g | 74.78 | a | 67.22 | e | 50.00 | b | 71.77 | a | ||
2008 | 51.95 | a | 55.28 | d | 63.15 | e | 70.48 | e | 75.76 | 89.57 | a | 90.44 | d | 88.89 | 86.00 | 74.69 | b | 64.05 | a | 52.45 | c | 71.89 | ||||
2009 | 54.69 | b | 58.17 | b | 64.52 | f | 70.26 | m | 83.81 | e | 85.21 | a | 93.37 | 91.85 | 86.59 | a | 72.32 | a | 66.36 | e | 51.86 | f | 76.93 | c | ||
2010 | 54.21 | 56.24 | a | 58.98 | c | 67.73 | 74.97 | a | 87.12 | a | 92.67 | b | 91.03 | b | 87.12 | e | 75.08 | 62.02 | c | 57.33 | b | 72.04 | ||||
2011 | 52.04 | f | 52.35 | d | 65.16 | f | 71.73 | d | 75.88 | b | 88.11 | c | 91.81 | b | 93.34 | b | 87.25 | f | 76.42 | f | 61.48 | d | 50.09 | b | 73.10 | d |
2012 | 56.70 | f | 57.75 | e | 63.05 | b | 72.04 | d | 82.30 | f | 90.07 | c | 89.58 | e | 90.96 | c | 84.67 | c | 75.76 | b | 65.93 | c | 54.38 | b | 74.42 | b |
2013 | 50.64 | c | 53.14 | 65.88 | f | 70.42 | f | 78.00 | f | 92.58 | x | 90.04 | h | 91.03 | k | 83.64 | i | 71.84 | 63.40 | d | 52.38 | g | 59.76 | h | ||
2014 | 55.65 | 61.17 | b | 65.61 | i | 71.36 | a | 79.08 | g | 89.75 | d | 91.31 | e | 87.43 | c | 84.30 | b | 75.70 | d | 64.00 | b | 54.54 | c | 73.52 | b | |
2015 | 54.43 | b | 61.73 | d | 67.48 | g | 69.57 | 73.44 | d | 89.23 | h | 89.09 | d | 91.76 | b | 85.84 | b | 74.65 | e | 59.58 | f | 51.67 | j | 75.06 | d | |
2016 | 52.48 | k | 62.91 | f | 66.89 | d | 71.33 | c | 77.75 | c | 91.22 | e | 93.21 | g | 87.50 | f | 84.37 | c | 79.81 | d | 65.65 | f | 56.65 | e | 75.43 | e |
2017 | 53.54 | e | 60.98 | c | 69.37 | a | 72.10 | e | 78.48 | b | 90.88 | a | 90.77 | c | 90.16 | 84.45 | b | 79.82 | c | 68.94 | c | 57.78 | a | 74.77 | ||
2018 | 60.17 | b | 58.72 | a | 64.45 | b | 75.03 | m | 80.98 | g | 89.45 | h | 91.86 | c | 90.20 | d | 87.59 | b | 72.26 | 61.04 | b | 53.26 | b | 71.06 | c | |
2019 | 53.52 | e | 52.00 | a | 61.89 | d | 72.48 | d | 72.78 | d | 87.38 | d | 91.79 | b | 91.67 | d | 83.31 | d | 72.19 | d | 65.03 | a | 53.31 | 71.45 | ||
2020 | 53.14 | b | 56.08 | d | 62.28 | d | 70.17 | c | 83.12 | g | 87.52 | e | 94.30 | d | 94.48 | b | 87.62 | d | 78.86 | b | 67.62 | b | 54.02 | b | 73.28 | a |
2021 | 54.63 | d | 58.77 | 62.58 | a | 73.83 | a | 79.91 | b | 91.95 | a | 89.16 | 87.55 | b | 85.00 | 72.73 | e | 67.81 | a | 56.90 | b | 73.40 | ||||
2022 | 54.54 | c | 56.09 | 62.95 | c | 73.50 | a | 79.35 | d | 90.66 | e | 92.39 | 87.79 | b | 87.98 | e | 74.53 | b | 57.87 | c | 51.48 | a | 72.43 | |||
2023 | 51.08 | 53.12 | 58.13 | 69.12 | 79.05 | a | 83.97 | a | 96.38 | a | 93.05 | a | 86.15 | 78.02 | 66.28 | 56.76 | 72.59 | |||||||||
2024 | 53.26 | 57.67 | 59.59 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 56.84 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 53.74 | 57.05 | 62.71 | 70.77 | 78.90 | 88.41 | 91.69 | 90.24 | 85.54 | 74.73 | 62.97 | 53.35 | 72.41 | |||||||||||||
S.D. | 2.13 | 2.88 | 3.12 | 2.64 | 3.08 | 2.17 | 1.76 | 2.17 | 1.86 | 2.49 | 3.58 | 2.11 | 1.00 | |||||||||||||
SKEW | 0.76 | -0.28 | 0.28 | -0.23 | -0.08 | -0.26 | 0.31 | -0.29 | -0.64 | 0.68 | -0.59 | 0.35 | 0.35 | |||||||||||||
MAX | 60.17 | 61.73 | 69.37 | 77.43 | 84.26 | 91.95 | 96.38 | 94.48 | 88.45 | 79.82 | 68.94 | 57.78 | 74.77 | |||||||||||||
MIN | 50.18 | 51.48 | 56.41 | 63.53 | 72.78 | 83.97 | 88.93 | 85.73 | 81.29 | 71.19 | 53.73 | 50.00 | 70.61 | |||||||||||||
YRS | 34 | 32 | 31 | 31 | 30 | 32 | 31 | 32 | 31 | 34 | 33 | 33 | 18 |