YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 75.17 | y | 62.73 | 52.55 | 57.64 | j | ||
1955 | 51.42 | 56.86 | 63.32 | 60.60 | 77.00 | 84.10 | 89.58 | 97.71 | 89.57 | 78.03 | 61.20 | 52.84 | 71.85 | |||||||||||||
1956 | 50.74 | 55.07 | 63.71 | 68.10 | 75.26 | 85.60 | 94.84 | 91.74 | 87.37 | 72.71 | 66.97 | 58.29 | 72.53 | |||||||||||||
1957 | 49.39 | 58.57 | 60.39 | 69.10 | 71.94 | 89.57 | 94.42 | 91.55 | 88.37 | 68.29 | ----- | z | ----- | z | 74.16 | b | ||||||||||
1958 | ----- | z | ----- | z | 54.90 | 65.63 | 78.77 | 81.80 | 93.29 | 96.43 | a | 88.31 | a | 80.40 | k | 64.80 | e | 61.19 | 76.13 | c | ||||||
1959 | 54.80 | u | 54.71 | k | 66.65 | 75.93 | 73.55 | 86.13 | 96.97 | 93.45 | 84.00 | 79.45 | b | 70.39 | b | 59.14 | i | 80.72 | c | |||||||
1960 | 49.80 | f | 57.57 | f | 66.61 | h | 64.00 | p | 73.36 | q | 92.25 | r | ----- | z | 91.73 | p | 90.40 | 75.74 | 60.67 | f | 55.58 | 73.91 | i | |||
1961 | 55.29 | 57.79 | 58.32 | 69.43 | 71.45 | 90.33 | 96.52 | 94.80 | a | 86.30 | 77.06 | 63.57 | b | 53.00 | b | 72.82 | ||||||||||
1962 | 57.29 | n | 54.21 | 56.87 | 73.47 | 71.90 | 86.00 | 93.25 | g | 89.90 | a | 90.94 | n | 72.90 | 64.10 | 56.55 | 69.55 | c | ||||||||
1963 | 53.83 | b | ----- | z | 59.13 | a | 58.53 | k | ----- | z | 85.13 | g | 89.23 | a | 92.16 | 88.50 | 74.61 | 60.77 | 58.45 | 72.09 | d | |||||
1964 | 53.00 | 64.24 | 63.52 | 71.23 | 74.26 | 83.27 | 95.26 | 96.48 | 87.57 | 81.71 | 57.31 | a | 54.81 | 73.55 | ||||||||||||
1965 | 54.77 | 62.18 | 63.57 | a | 64.87 | 78.13 | 85.00 | 94.13 | 91.23 | 84.07 | 81.94 | 60.77 | d | 52.79 | b | 72.79 | ||||||||||
1966 | 53.81 | 54.25 | 61.90 | 75.87 | 82.61 | 86.73 | 91.84 | 97.58 | 87.50 | 81.23 | 63.40 | 55.94 | 74.39 | |||||||||||||
1967 | 56.39 | 62.82 | 57.74 | 53.33 | 77.90 | 83.67 | 97.71 | 100.55 | 92.52 | c | 78.52 | 68.63 | 55.71 | 73.79 | ||||||||||||
1968 | 54.31 | e | 61.17 | 63.77 | 72.89 | b | 76.16 | 89.20 | 97.06 | 88.39 | ----- | z | ----- | z | 61.13 | 49.65 | 71.37 | b | ||||||||
1969 | 51.10 | 49.39 | 61.81 | 66.87 | 80.97 | 83.13 | 97.03 | 98.39 | 92.40 | 73.04 | c | 68.93 | 57.55 | 73.38 | ||||||||||||
1970 | 54.77 | 62.00 | 64.32 | 66.03 | 80.71 | 86.83 | 97.29 | 96.35 | 88.93 | 77.03 | 61.73 | 48.68 | 73.72 | |||||||||||||
1971 | 55.52 | 61.41 | a | 59.90 | 66.20 | 73.13 | 82.83 | 94.97 | 95.61 | 86.53 | 73.71 | 62.23 | 48.77 | 71.74 | ||||||||||||
1972 | 53.39 | 57.21 | 67.48 | 67.27 | 80.10 | 89.47 | 97.06 | 95.35 | 85.60 | 70.45 | 58.00 | 47.81 | 72.43 | |||||||||||||
1973 | 49.97 | 55.61 | 58.19 | 73.10 | 83.97 | 89.80 | 97.10 | 94.29 | 86.03 | 75.26 | 55.33 | 52.65 | 72.61 | |||||||||||||
1974 | 51.26 | 56.25 | 59.84 | 65.10 | 77.87 | 88.70 | 92.16 | 95.19 | 94.07 | 79.65 | 61.73 | 54.16 | 73.00 | |||||||||||||
1975 | 55.84 | 54.29 | 56.94 | 59.90 | 79.00 | 87.63 | 90.68 | 90.97 | 90.80 | 71.58 | 59.83 | 57.58 | 71.25 | |||||||||||||
1976 | 57.32 | 58.28 | 62.52 | 63.77 | 82.55 | 85.80 | 93.13 | 83.77 | 83.03 | 79.16 | 69.03 | 59.71 | 73.17 | |||||||||||||
1977 | 55.65 | 64.11 | 60.90 | 75.63 | 67.32 | 92.23 | 95.52 | 94.92 | f | 81.33 | 76.16 | 62.23 | 55.26 | 71.49 | a | |||||||||||
1978 | 53.94 | 56.54 | 64.45 | 63.50 | 78.65 | 84.97 | 94.90 | 93.94 | 81.73 | 82.32 | 60.73 | 53.65 | 72.44 | |||||||||||||
1979 | 51.03 | 53.25 | 61.84 | 67.10 | 79.71 | 89.30 | 93.48 | 90.97 | 90.57 | 73.94 | 59.33 | 57.16 | 72.31 | |||||||||||||
1980 | 55.55 | 58.24 | 61.26 | 69.27 | 75.35 | 79.83 | a | 93.94 | 93.55 | 86.87 | 79.29 | 65.30 | 58.29 | 73.06 | ||||||||||||
1981 | 56.32 | 59.18 | 60.16 | 71.37 | 78.03 | 90.30 | 97.29 | 96.35 | 89.43 | 70.71 | 61.63 | 55.10 | 73.82 | |||||||||||||
1982 | 50.97 | 58.68 | 57.10 | 64.13 | 81.87 | 83.87 | 91.68 | 93.29 | 82.30 | 71.55 | 57.60 | 52.84 | 70.49 | |||||||||||||
1983 | 55.65 | 55.86 | 56.52 | 60.17 | 76.26 | 82.87 | 85.35 | 88.74 | 84.80 | 75.26 | 57.50 | b | 52.65 | 69.30 | ||||||||||||
1984 | 60.81 | 59.28 | 66.74 | 66.40 | 78.45 | 84.93 | a | 95.90 | 90.90 | a | 88.63 | 68.58 | 56.97 | 52.26 | 72.49 | |||||||||||
1985 | 59.32 | 63.00 | 59.48 | 75.83 | 75.90 | 91.17 | 95.90 | 91.00 | 80.57 | ----- | z | ----- | z | ----- | z | 76.91 | c | |||||||||
1986 | ----- | z | ----- | z | 74.79 | q | 68.97 | a | 76.47 | a | 86.87 | 89.58 | 94.06 | 77.13 | 74.94 | 68.13 | 57.03 | 77.02 | c | |||||||
1987 | 54.23 | 59.50 | 60.23 | 74.97 | 79.65 | 87.60 | 85.94 | 92.68 | 88.63 | 79.10 | 60.03 | 50.16 | 72.73 | |||||||||||||
1988 | 54.23 | 65.97 | 68.19 | 68.61 | b | 72.72 | b | 81.90 | 96.39 | 92.71 | 88.20 | 80.48 | 59.31 | a | 56.23 | 73.74 | ||||||||||
1989 | 57.52 | 53.79 | 59.68 | 73.50 | 75.26 | 83.00 | 90.43 | a | 88.68 | 81.23 | 72.13 | 67.67 | 62.74 | 72.13 | ||||||||||||
1990 | 56.03 | a | 57.39 | 65.77 | a | 72.73 | 72.61 | 84.07 | 92.94 | 89.35 | 84.87 | 77.55 | 65.27 | 53.03 | 72.63 | |||||||||||
1991 | 59.42 | 66.61 | 54.83 | b | 66.07 | 72.06 | 81.33 | 93.65 | 87.00 | 91.14 | a | 81.13 | 66.80 | 57.94 | 73.16 | |||||||||||
1992 | 57.39 | 60.62 | ----- | z | 71.17 | 84.87 | 82.83 | 88.87 | 93.94 | 86.20 | 77.16 | 64.00 | 53.10 | a | 74.56 | a | ||||||||||
1993 | 51.45 | 53.67 | a | 64.71 | 65.80 | 69.94 | 80.67 | 87.90 | 87.87 | 85.79 | a | 75.13 | 63.97 | 55.69 | b | 70.22 | ||||||||||
1994 | 58.68 | 55.39 | 66.90 | 69.30 | 74.48 | 83.50 | 93.71 | 90.87 | 84.65 | d | 73.87 | a | 53.87 | 50.69 | b | 71.33 | ||||||||||
1995 | 50.90 | a | 63.96 | 57.67 | a | 66.47 | 71.23 | 80.43 | 88.61 | 91.00 | 86.40 | 78.68 | 70.77 | 58.38 | b | 72.04 | ||||||||||
1996 | 57.42 | 59.61 | a | 64.79 | c | 67.57 | 72.03 | 86.90 | a | 96.35 | 88.44 | d | 80.75 | b | 74.03 | 64.00 | c | 55.83 | a | 72.31 | ||||||
1997 | 54.29 | 61.19 | a | 67.61 | 68.37 | 80.29 | 81.53 | 90.13 | a | 86.42 | 83.63 | 73.42 | 61.23 | 55.29 | 71.95 | |||||||||||
1998 | 51.62 | b | 50.61 | 61.10 | 62.28 | a | 61.42 | 77.60 | 89.55 | 93.29 | 84.43 | 70.81 | 58.60 | 54.81 | 68.01 | |||||||||||
1999 | 57.94 | 52.46 | 56.29 | 65.48 | a | 74.70 | a | 82.03 | 88.16 | 86.68 | 88.67 | 79.61 | 62.83 | 60.45 | 71.28 | |||||||||||
2000 | 54.41 | b | 53.61 | a | 61.94 | 70.21 | a | 74.13 | a | 88.30 | 87.60 | a | 92.39 | 83.57 | 71.81 | 58.82 | b | 57.71 | 71.21 | |||||||
2001 | 54.07 | d | 53.93 | 65.68 | c | 65.10 | 84.63 | a | 86.90 | 92.74 | 93.06 | 88.38 | a | 82.97 | a | ----- | z | 51.93 | a | 74.49 | a | |||||
2002 | 53.32 | 60.75 | 60.80 | a | 69.23 | 73.68 | 88.43 | 95.87 | 93.97 | 90.47 | 80.58 | 68.00 | 54.63 | a | 74.14 | |||||||||||
2003 | 58.87 | 58.50 | 63.16 | 57.93 | 73.84 | 85.90 | 93.94 | 86.84 | 89.83 | 81.00 | 56.90 | 51.65 | 71.53 | |||||||||||||
2004 | 52.74 | 54.52 | 70.97 | 70.00 | 75.16 | 85.23 | 90.71 | 89.48 | 86.03 | 72.06 | 61.93 | 57.23 | a | 72.17 | ||||||||||||
2005 | 53.48 | 58.93 | 63.97 | 64.43 | 71.00 | 75.25 | b | 93.81 | 91.74 | 82.00 | a | 74.10 | 65.03 | 56.20 | a | 70.83 | ||||||||||
2006 | 54.10 | a | 60.71 | 51.19 | 62.20 | 77.19 | 86.20 | 95.26 | 89.06 | 86.17 | 73.26 | 59.57 | 55.39 | 70.86 | ||||||||||||
2007 | 57.52 | 56.70 | a | 69.26 | 69.00 | 77.48 | 83.90 | 90.40 | a | 90.68 | 81.27 | 68.94 | ----- | z | ----- | z | 74.51 | b | ||||||||
2008 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2009 | ----- | z | ----- | z | ----- | z | 72.30 | j | 81.40 | k | 83.43 | i | 96.14 | i | 92.62 | o | 93.41 | m | 75.14 | j | 62.69 | n | 56.18 | n | ----- | z |
2010 | 55.05 | k | 58.06 | j | 64.24 | j | 66.22 | l | 69.32 | l | 82.60 | j | 93.37 | l | 89.89 | m | 88.82 | m | 73.26 | l | 63.12 | n | 55.62 | o | ----- | z |
2011 | 58.29 | q | 61.07 | m | 56.83 | m | 65.45 | s | 69.06 | o | 81.56 | n | 86.67 | p | 92.26 | l | 93.60 | o | 79.36 | q | 62.14 | p | 64.50 | s | ----- | z |
2012 | 61.26 | l | 63.67 | n | 60.76 | n | 70.73 | o | 78.00 | l | 83.29 | i | 92.00 | l | 97.75 | w | 92.38 | q | 75.71 | n | 68.00 | q | 56.07 | q | ----- | z |
2013 | 58.31 | r | 64.71 | n | 68.79 | l | 77.67 | o | 82.07 | q | 90.13 | o | 99.00 | p | 91.00 | p | 85.33 | l | 80.55 | t | 70.69 | n | 62.64 | t | ----- | z |
2014 | 69.78 | m | 60.56 | j | 71.21 | q | 72.70 | t | 84.11 | v | 93.56 | u | 98.91 | t | 97.10 | u | 91.60 | y | 86.86 | x | 70.82 | s | 57.67 | v | ----- | z |
2015 | 68.82 | t | 69.56 | s | 75.40 | u | 74.40 | t | 79.38 | o | 95.33 | r | ----- | z | ----- | z | ----- | z | 83.80 | u | 69.89 | u | 55.70 | u | ----- | z |
2016 | 54.08 | s | 67.82 | r | 64.69 | r | 73.07 | o | 76.36 | q | 87.31 | q | 97.62 | r | ----- | z | ----- | z | ----- | z | ----- | z | 58.43 | x | ----- | z |
2017 | 55.80 | u | 58.64 | q | 65.40 | u | 67.17 | r | ----- | z | 81.57 | w | ----- | z | 100.12 | w | 92.90 | t | 81.83 | y | 68.14 | w | 69.14 | x | ----- | z |
2018 | 61.33 | v | 67.00 | s | 59.90 | u | 77.11 | u | ----- | z | 95.00 | x | 100.67 | s | ----- | z | 88.33 | u | 81.56 | v | 70.50 | v | 60.00 | v | ----- | z |
2019 | 57.92 | r | 53.58 | p | 60.00 | t | 77.50 | v | ----- | z | 95.67 | x | ----- | z | 97.50 | y | 89.00 | x | 78.57 | x | ----- | z | 58.12 | w | ----- | z |
2020 | ----- | z | 71.40 | x | ----- | z | 69.00 | x | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 69.38 | v | 62.80 | u | ----- | z |
2021 | 60.33 | y | 63.43 | u | ----- | z | 77.20 | y | ----- | z | 105.40 | y | ----- | z | ----- | z | 101.00 | x | 76.33 | y | ----- | z | ----- | z | ----- | z |
2022 | ----- | z | 74.50 | x | ----- | z | ----- | z | 81.20 | k | 86.73 | 95.10 | 95.90 | a | 90.07 | b | ----- | z | ----- | z | ----- | z | 91.95 | h | ||
2023 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 94.56 | v | 87.22 | l | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 54.60 | 58.09 | 61.76 | 67.68 | 76.15 | 85.23 | 93.11 | 92.25 | 86.49 | 75.85 | 62.46 | 54.95 | 72.23 | |||||||||||||
S.D. | 2.74 | 3.96 | 4.13 | 4.82 | 4.50 | 3.49 | 3.28 | 3.49 | 3.58 | 3.98 | 4.06 | 3.26 | 1.32 | |||||||||||||
SKEW | 0.15 | 0.10 | -0.08 | -0.39 | -0.43 | -0.35 | -0.53 | -0.03 | -0.27 | -0.01 | 0.18 | -0.05 | -0.96 | |||||||||||||
MAX | 60.81 | 66.61 | 70.97 | 75.93 | 84.87 | 92.23 | 97.71 | 100.55 | 94.07 | 82.97 | 70.77 | 62.74 | 74.39 | |||||||||||||
MIN | 49.39 | 49.39 | 51.19 | 53.33 | 61.42 | 75.25 | 85.35 | 83.77 | 77.13 | 68.29 | 53.87 | 47.81 | 68.01 | |||||||||||||
YRS | 48 | 48 | 50 | 51 | 51 | 52 | 52 | 52 | 52 | 50 | 49 | 50 | 40 |