YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 62.48 | i | 57.37 | 57.37 | k | |
1978 | 52.89 | 56.95 | 64.68 | a | 67.83 | 77.85 | 91.35 | 94.82 | 93.50 | d | 85.15 | 77.42 | 58.93 | a | 47.73 | 72.43 | ||||||||||
1979 | 45.79 | 52.48 | 60.40 | 69.53 | a | 79.42 | 89.13 | 92.82 | a | 90.22 | a | 88.92 | 75.72 | a | 58.08 | 54.42 | 71.41 | |||||||||
1980 | 55.58 | 59.07 | a | 59.58 | 68.76 | a | 74.35 | 86.85 | 96.38 | a | 92.88 | b | 86.22 | 74.65 | 63.58 | 58.60 | b | 73.04 | ||||||||
1981 | 56.03 | a | 57.64 | 62.95 | 75.15 | 80.18 | 93.72 | 95.18 | 95.56 | 88.13 | 70.82 | 63.28 | 54.48 | a | 74.43 | |||||||||||
1982 | 51.27 | a | 60.28 | c | 61.81 | b | 70.37 | d | 80.02 | b | 87.56 | c | 93.85 | e | 94.63 | d | 85.65 | c | 71.23 | e | 60.62 | f | 50.76 | d | 73.40 | a |
1983 | 55.62 | c | 58.81 | d | 63.37 | d | 66.73 | f | 80.47 | b | 88.09 | c | 93.43 | c | 91.76 | d | 88.75 | h | 74.77 | c | 61.36 | e | 54.15 | e | 72.18 | b |
1984 | 56.82 | c | 58.46 | a | 66.40 | 71.67 | 87.19 | 89.58 | 96.16 | 93.71 | 89.17 | c | 70.90 | 59.38 | 50.92 | 74.20 | ||||||||||
1985 | 53.37 | a | 58.02 | b | 61.67 | a | 75.10 | 81.65 | 91.72 | a | 96.98 | 93.71 | 81.38 | 74.19 | 59.91 | c | 55.13 | e | 73.57 | |||||||
1986 | 58.87 | 61.16 | 69.12 | a | 73.43 | b | 82.24 | 93.53 | 93.45 | 96.26 | 81.50 | 72.48 | d | 64.65 | 53.71 | c | 75.03 | |||||||||
1987 | 52.69 | b | 58.84 | 62.24 | 75.98 | 81.70 | a | 91.33 | 92.16 | 94.05 | 86.43 | a | 77.28 | a | 61.67 | 50.27 | 73.72 | |||||||||
1988 | 52.93 | a | 60.23 | a | 64.38 | b | 71.18 | 80.92 | a | 90.88 | 97.48 | 93.02 | a | 85.88 | 79.63 | 63.32 | 54.95 | 74.57 | ||||||||
1989 | 52.94 | 58.39 | 69.45 | 79.73 | 83.00 | a | 91.22 | 97.82 | 93.45 | 86.68 | 74.61 | 65.65 | 56.27 | 75.77 | ||||||||||||
1990 | 52.90 | 56.82 | 66.53 | a | 74.81 | a | 80.24 | 93.08 | 95.95 | a | 92.26 | 88.32 | 76.18 | 63.85 | 49.60 | 74.21 | ||||||||||
1991 | 52.89 | 62.95 | 57.66 | 69.18 | 77.50 | a | 85.67 | a | 94.55 | 93.25 | a | 88.02 | 78.03 | 63.65 | 54.13 | 73.12 | ||||||||||
1992 | 54.13 | 60.59 | 62.42 | a | 73.62 | 83.50 | c | 89.40 | 94.77 | a | 96.03 | 88.22 | 76.85 | a | 60.70 | 50.55 | b | 74.23 | ||||||||
1993 | 53.11 | 56.61 | 64.52 | 72.52 | 82.02 | 88.55 | 92.03 | 92.85 | 86.10 | 75.00 | 58.80 | 53.50 | 72.97 | |||||||||||||
1994 | 56.24 | 55.39 | 67.47 | 72.87 | 80.82 | 94.37 | 96.92 | 98.15 | 89.95 | 73.03 | 57.22 | 55.03 | 74.79 | |||||||||||||
1995 | 54.52 | 62.91 | a | 63.24 | 70.87 | 77.81 | 88.18 | 95.58 | 97.63 | 90.32 | 76.05 | 67.55 | 56.10 | e | 75.06 | |||||||||||
1996 | 57.06 | 63.55 | 67.98 | 75.57 | 84.19 | 91.78 | 99.75 | a | 98.05 | 86.85 | 76.65 | 64.28 | 55.87 | 76.80 | ||||||||||||
1997 | 55.98 | 59.29 | 69.05 | 73.10 | 87.89 | 89.88 | 93.87 | 96.48 | a | 89.55 | 75.03 | 63.33 | 53.32 | 75.57 | ||||||||||||
1998 | 54.95 | 55.75 | 63.65 | 66.93 | 76.15 | 86.18 | 97.61 | 97.48 | 87.71 | a | 73.98 | 61.55 | 55.74 | 73.14 | ||||||||||||
1999 | 57.65 | 60.33 | a | 66.27 | a | 68.42 | 79.68 | 88.66 | a | 94.08 | a | 94.93 | b | 89.05 | 77.37 | a | 65.48 | 56.18 | 74.84 | |||||||
2000 | 56.70 | c | 60.94 | b | 64.80 | a | 76.52 | b | 86.60 | 93.00 | 95.88 | a | 95.69 | 87.62 | 74.26 | b | 57.07 | b | 56.60 | b | 75.47 | |||||
2001 | 53.18 | a | 56.44 | a | 65.45 | 71.84 | a | 87.22 | a | 92.82 | 94.81 | 96.53 | a | 89.22 | a | 77.02 | e | 65.91 | a | 52.16 | 75.22 | |||||
2002 | 53.35 | g | 58.66 | 63.88 | a | 75.50 | 81.27 | 92.71 | f | 98.85 | 94.13 | 88.82 | 73.07 | a | 64.70 | 53.12 | a | 75.20 | b | |||||||
2003 | 61.53 | 57.63 | a | 64.25 | a | 68.39 | c | 82.60 | a | 90.50 | p | 98.68 | 96.47 | 91.71 | a | 82.65 | h | 58.00 | h | 53.66 | i | 77.66 | d | |||
2004 | 54.36 | b | 54.50 | i | 74.32 | i | 73.17 | g | 83.07 | p | 91.58 | j | 96.67 | y | 94.19 | e | 86.83 | g | 72.57 | d | 58.62 | e | 54.96 | h | 69.94 | h |
2005 | 53.78 | f | 58.32 | f | 60.43 | q | 72.24 | e | 81.77 | g | 87.33 | l | 97.33 | g | 94.20 | d | 86.65 | 77.62 | c | 68.85 | 55.88 | a | 75.91 | f | ||
2006 | 56.40 | a | 61.12 | b | 60.97 | a | 72.73 | d | 86.42 | 94.16 | a | 99.80 | a | 95.69 | 86.38 | a | 76.26 | h | 65.50 | f | 54.89 | 76.85 | b | |||
2007 | 53.18 | 60.41 | a | 69.28 | a | 74.74 | a | 84.07 | a | 91.05 | a | 98.13 | 98.10 | 88.92 | 75.35 | 66.07 | 57.08 | 76.36 | ||||||||
2008 | 56.10 | 58.09 | b | 64.86 | f | 73.15 | g | 78.98 | 91.75 | 97.76 | 95.91 | b | 89.00 | a | 76.88 | b | 67.27 | 55.10 | 76.68 | b | ||||||
2009 | 59.58 | a | 56.77 | 63.60 | 72.58 | 87.03 | 87.98 | 98.67 | a | 94.23 | a | 89.77 | b | 73.23 | a | 64.54 | c | 52.35 | d | 75.03 | ||||||
2010 | 55.30 | d | 58.25 | b | 62.52 | 69.73 | d | 76.55 | 89.50 | 98.75 | c | 94.68 | a | 88.25 | 75.81 | d | 61.88 | e | 57.87 | d | 74.09 | |||||
2011 | 54.28 | h | 54.26 | e | 64.43 | c | 72.48 | b | 77.59 | c | 88.74 | a | 95.39 | c | 97.08 | f | 88.67 | c | 76.69 | j | 59.88 | 52.24 | d | 72.63 | c | |
2012 | 56.14 | b | 59.81 | b | 65.18 | c | 74.43 | a | 84.52 | c | 91.07 | g | 94.83 | d | 97.46 | d | 89.81 | c | 75.17 | e | 64.11 | l | 53.90 | f | 77.48 | c |
2013 | 52.48 | g | 55.41 | k | 68.66 | c | 74.94 | d | 84.62 | e | 93.35 | c | 98.72 | d | 93.76 | d | 85.30 | g | 72.64 | i | 63.77 | q | 54.73 | i | 85.68 | f |
2014 | 58.45 | j | 64.83 | j | 67.19 | m | 75.09 | h | 82.81 | o | 91.12 | n | 97.17 | m | 92.00 | k | 88.11 | l | 77.18 | l | 67.72 | n | 56.58 | r | ----- | z |
2015 | 58.88 | j | 61.96 | n | 70.56 | e | 72.81 | c | 78.81 | d | 93.80 | e | 93.71 | c | 97.57 | b | 91.10 | d | 79.64 | f | 61.11 | h | 51.41 | h | 85.48 | e |
2016 | 53.42 | 63.80 | b | 67.76 | 71.63 | 78.92 | 95.12 | 96.27 | 94.21 | 85.05 | a | 78.13 | a | 64.62 | 54.13 | 75.25 | ||||||||||
2017 | 52.81 | g | 60.62 | 66.95 | 73.00 | 78.94 | 90.95 | 96.98 | 94.97 | a | 86.62 | a | 75.76 | 66.63 | o | 56.66 | 78.15 | b | ||||||||
2018 | 57.79 | q | 56.43 | 62.92 | 74.18 | 81.96 | r | 89.72 | u | 98.45 | u | 96.44 | w | 90.64 | w | 72.38 | w | ----- | z | ----- | z | 64.51 | i | |||
2019 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2020 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2021 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 72.39 | c | 66.72 | c | 56.91 | n | 69.56 | j |
2022 | 55.34 | b | 58.52 | 65.05 | 74.68 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 53.18 | a | 61.36 | g | |||
2023 | 51.55 | 57.04 | 58.16 | 72.27 | 81.75 | a | 86.03 | 101.44 | 96.16 | 88.33 | 78.00 | 64.73 | 57.35 | 74.40 | ||||||||||||
2024 | 53.58 | 57.79 | 61.82 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 55.69 | j | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 54.74 | 58.75 | 64.60 | 72.60 | 81.44 | 90.54 | 96.17 | 94.97 | 87.71 | 75.20 | 62.86 | 54.25 | 74.40 | |||||||||||||
S.D. | 2.72 | 2.47 | 3.13 | 2.72 | 3.42 | 2.60 | 2.29 | 1.91 | 2.22 | 2.21 | 3.14 | 2.50 | 1.21 | |||||||||||||
SKEW | -0.40 | -0.02 | -0.12 | -0.01 | 0.20 | -0.13 | 0.16 | -0.12 | -0.98 | -0.26 | -0.20 | -0.59 | -0.34 | |||||||||||||
MAX | 61.53 | 63.80 | 70.56 | 79.73 | 87.89 | 95.12 | 101.44 | 98.15 | 91.71 | 79.63 | 68.85 | 58.60 | 76.80 | |||||||||||||
MIN | 45.79 | 52.48 | 57.66 | 66.93 | 74.35 | 85.67 | 92.03 | 90.22 | 81.38 | 70.82 | 57.07 | 47.73 | 71.41 | |||||||||||||
YRS | 36 | 39 | 39 | 39 | 38 | 35 | 38 | 39 | 37 | 36 | 34 | 37 | 27 |