YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1955 | ----- | z | 49.70 | 55.73 | 58.43 | 69.69 | 76.77 | 81.89 | 86.60 | 79.13 | 68.48 | a | 52.77 | 50.11 | 66.30 | a | ||||||||||
1956 | 49.81 | 46.84 | 56.31 | 61.48 | 70.48 | 78.90 | 84.95 | 80.98 | 78.87 | 65.50 | 55.42 | 45.62 | a | 64.60 | ||||||||||||
1957 | 43.33 | a | 55.10 | b | 56.62 | a | 63.13 | 68.37 | 81.85 | 85.97 | 81.77 | 78.22 | 65.23 | 53.91 | a | 45.22 | a | 64.89 | ||||||||
1958 | 45.92 | a | 54.43 | 52.31 | 60.97 | 72.67 | a | 75.98 | 84.02 | 87.83 | g | 78.05 | 72.50 | a | 57.02 | 50.61 | 64.04 | a | ||||||||
1959 | 50.52 | 50.04 | a | 59.74 | 68.82 | 68.37 | a | 81.43 | 89.18 | a | 82.55 | 74.57 | a | 69.14 | b | 57.27 | 48.92 | 66.71 | ||||||||
1960 | 46.11 | 50.84 | 59.07 | b | 62.52 | 67.53 | 84.92 | 87.74 | 82.89 | 79.05 | 65.94 | 53.52 | a | 44.65 | a | 65.40 | ||||||||||
1961 | 42.95 | a | 53.64 | 55.73 | a | 64.52 | 66.84 | 82.85 | 88.38 | a | 85.95 | a | 75.08 | 68.67 | a | 53.02 | 44.78 | a | 65.20 | |||||||
1962 | 40.35 | a | 48.73 | 53.16 | 66.97 | 67.81 | 79.35 | 84.82 | 83.48 | 78.10 | 65.87 | a | 57.90 | 47.22 | d | 64.48 | ||||||||||
1963 | 41.89 | 56.45 | 55.26 | 57.10 | 69.27 | a | 75.67 | 82.63 | 82.26 | 78.81 | a | 67.62 | a | 54.18 | 40.63 | a | 63.48 | |||||||||
1964 | 44.73 | 50.19 | 54.29 | 62.12 | 67.35 | 77.60 | 85.00 | 83.61 | 73.65 | 71.16 | 51.17 | 50.06 | 64.24 | |||||||||||||
1965 | 46.08 | 50.52 | 56.95 | 60.85 | 67.41 | b | 71.02 | 80.47 | a | 82.33 | d | 71.40 | 67.94 | 56.53 | 40.47 | a | 62.66 | |||||||||
1966 | 43.78 | a | 46.82 | 55.62 | a | 65.52 | 72.39 | 76.58 | 80.31 | 84.37 | 74.80 | 65.42 | a | 54.98 | b | 44.75 | c | 63.78 | ||||||||
1967 | 42.48 | ----- | z | ----- | z | 52.20 | 68.37 | a | 71.70 | ----- | z | 87.26 | 79.20 | 66.87 | 58.85 | 42.10 | 63.23 | c | ||||||||
1968 | 43.33 | b | 54.83 | 56.47 | 62.09 | a | 68.98 | 77.96 | d | 84.69 | 79.02 | 75.19 | f | 65.53 | 52.73 | j | 43.23 | 63.61 | b | |||||||
1969 | 45.53 | 47.96 | 53.92 | 60.42 | 71.84 | 74.63 | 83.06 | 82.65 | 76.48 | 63.03 | 55.10 | 48.19 | 63.57 | |||||||||||||
1970 | 50.56 | 52.66 | 55.65 | 58.11 | b | 70.47 | a | 77.33 | 85.21 | 82.19 | 74.92 | 64.76 | 55.05 | 48.90 | p | 66.08 | a | |||||||||
1971 | 44.24 | b | 47.05 | 54.55 | 58.97 | 65.16 | b | 75.75 | 84.03 | a | 84.16 | 76.10 | a | 62.20 | c | 51.61 | b | 43.77 | a | 62.30 | ||||||
1972 | 40.13 | 52.59 | 61.09 | b | 62.35 | 71.89 | 79.62 | a | 84.97 | b | 81.76 | 73.95 | 64.24 | 50.40 | a | 40.73 | c | 63.64 | ||||||||
1973 | 45.29 | 52.29 | 50.66 | 60.55 | 73.56 | 78.85 | 81.45 | 80.53 | b | 73.79 | a | 64.20 | c | 53.66 | a | 47.02 | c | 63.49 | ||||||||
1974 | 47.46 | c | 48.44 | b | 56.16 | b | 59.54 | d | 69.62 | a | 77.88 | 78.69 | m | 82.62 | f | ----- | z | 60.57 | x | 52.50 | b | 48.59 | t | 58.80 | e | |
1975 | 42.00 | i | 49.75 | 52.23 | a | 54.84 | e | 69.13 | 75.28 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 60.25 | g | ||
1976 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1978 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1981 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1982 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1983 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1984 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1985 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1986 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1987 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1988 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1989 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1990 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1991 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1992 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1993 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1994 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1995 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1996 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1997 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1998 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1999 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2000 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2001 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 67.65 | g | 57.62 | f | 46.93 | c | 46.93 | k |
2002 | 43.97 | m | 51.68 | f | 55.61 | c | 62.76 | i | 70.35 | a | 79.52 | d | 83.24 | d | 80.90 | k | 77.64 | e | 65.48 | f | 54.73 | b | 50.94 | g | 70.18 | f |
2003 | 48.14 | b | 49.19 | g | 57.93 | b | 58.95 | 69.10 | 77.73 | d | 86.00 | f | 80.60 | 79.58 | f | 69.82 | c | 51.87 | c | 49.31 | d | 62.61 | c | |||
2004 | 47.62 | k | 44.12 | y | 63.10 | e | 64.50 | g | 70.69 | b | 77.61 | b | 83.76 | 81.23 | 75.86 | a | 66.25 | a | 50.77 | d | 45.34 | b | 68.29 | c | ||
2005 | 46.55 | a | 53.21 | b | 57.12 | a | 59.62 | a | 69.50 | 72.98 | a | 85.66 | b | 83.05 | 72.63 | 65.31 | d | 55.87 | c | 50.22 | a | 64.31 | ||||
2006 | 47.00 | 50.85 | b | 50.16 | b | 58.54 | b | 72.00 | c | 80.59 | a | 86.24 | 79.23 | c | 74.33 | d | 63.02 | c | 54.76 | a | 45.20 | a | 63.49 | |||
2007 | 42.19 | 52.39 | a | 60.52 | b | 62.94 | d | 71.52 | 77.57 | b | 82.35 | a | 82.35 | 73.30 | 63.58 | a | 57.04 | d | 45.35 | a | 64.26 | |||||
2008 | 46.52 | 50.68 | a | 56.52 | b | 61.23 | 69.78 | a | 78.35 | 84.23 | c | 84.82 | c | 77.60 | 67.31 | d | 57.02 | 44.42 | a | 64.87 | ||||||
2009 | 46.20 | d | 50.04 | b | 55.83 | d | 61.10 | a | 75.41 | d | 76.33 | d | 85.17 | b | 82.00 | a | 79.52 | d | 63.11 | c | 52.84 | b | 46.40 | b | 64.50 | |
2010 | 47.11 | 51.69 | a | 54.69 | 57.14 | e | 64.22 | a | 76.47 | a | 82.93 | a | 79.80 | c | 74.91 | a | 67.17 | b | 52.30 | 50.77 | 63.27 | |||||
2011 | 44.25 | a | 47.74 | a | 53.66 | 60.50 | 64.45 | 72.80 | 81.03 | 80.69 | 78.38 | 66.55 | a | 50.95 | 42.82 | 61.99 | ||||||||||
2012 | 46.63 | 51.16 | 54.68 | 61.82 | 70.24 | 75.75 | 80.98 | 85.10 | 79.55 | 66.95 | 55.70 | 47.32 | a | 64.66 | ||||||||||||
2013 | 44.08 | 48.57 | 59.37 | 66.12 | 71.12 | a | 77.88 | 85.82 | 81.50 | 74.77 | 63.95 | 55.70 | 44.66 | 64.46 | ||||||||||||
2014 | 50.53 | 54.05 | 60.21 | 64.23 | 72.83 | a | 79.23 | 86.08 | a | 83.71 | 79.57 | 69.39 | 57.22 | 51.37 | 67.37 | |||||||||||
2015 | 46.42 | 55.80 | 62.05 | 64.09 | a | 68.40 | a | 81.34 | a | 83.06 | 82.67 | b | 78.62 | 70.44 | 51.82 | 45.47 | 65.85 | |||||||||
2016 | 50.28 | a | 53.83 | 58.03 | a | 64.91 | a | 70.10 | 81.41 | b | 84.13 | 83.42 | 76.23 | 66.56 | 56.72 | a | 47.38 | a | 66.08 | |||||||
2017 | 46.11 | 52.25 | 56.89 | 60.59 | a | 70.56 | 79.66 | b | 85.25 | a | 84.59 | d | 77.29 | d | 65.04 | c | 57.10 | f | 45.07 | j | 67.82 | b | ||||
2018 | 49.67 | h | 49.48 | e | 53.93 | h | 65.00 | i | 69.42 | e | 76.45 | h | 86.00 | e | 81.86 | m | 75.82 | e | 66.89 | c | 55.88 | e | 47.91 | h | 67.25 | f |
2019 | 49.48 | e | 47.21 | d | 55.38 | g | 67.67 | o | 65.73 | i | 78.54 | b | 82.80 | a | 84.02 | g | 73.74 | k | 63.88 | f | 56.02 | c | 48.82 | i | 62.81 | g |
2020 | 47.02 | e | 51.54 | o | 54.91 | n | 61.78 | g | 71.37 | e | 77.53 | 82.29 | b | 84.46 | c | 80.96 | q | 69.92 | f | 52.54 | e | 45.71 | c | 65.85 | e | |
2021 | 48.39 | c | 52.05 | 54.62 | j | 63.61 | c | 71.02 | e | 80.42 | d | 87.19 | d | 81.76 | h | 78.46 | b | 64.31 | g | 55.10 | 48.03 | 64.92 | c | |||
2022 | 47.52 | c | 50.07 | a | 59.33 | e | 63.07 | b | 69.43 | h | 80.25 | f | 84.25 | c | 84.65 | h | 77.83 | j | 72.00 | i | 52.69 | q | 49.03 | o | 60.85 | g |
2023 | 49.23 | r | 47.39 | f | 51.21 | g | 60.60 | f | 67.21 | g | 72.52 | g | 83.06 | e | 82.05 | l | 75.30 | t | 70.44 | n | 56.28 | l | 54.12 | o | 83.06 | k |
2024 | 51.77 | k | 54.74 | h | 58.07 | j | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 45.92 | 51.08 | 56.41 | 61.35 | 69.73 | 77.84 | 84.21 | 82.75 | 76.53 | 66.45 | 54.47 | 46.14 | 64.37 | |||||||||||||
S.D. | 2.77 | 2.63 | 2.98 | 3.31 | 2.35 | 2.93 | 2.11 | 1.97 | 2.29 | 2.45 | 2.23 | 2.95 | 1.27 | |||||||||||||
SKEW | -0.12 | 0.15 | 0.15 | -0.30 | -0.26 | -0.15 | 0.18 | 0.23 | -0.34 | 0.46 | -0.10 | -0.08 | 0.37 | |||||||||||||
MAX | 50.56 | 56.45 | 63.10 | 68.82 | 75.41 | 84.92 | 89.18 | 87.26 | 79.57 | 72.50 | 58.85 | 51.37 | 67.37 | |||||||||||||
MIN | 40.13 | 46.82 | 50.16 | 52.20 | 64.22 | 71.02 | 80.31 | 79.02 | 71.40 | 62.20 | 50.40 | 40.47 | 61.99 | |||||||||||||
YRS | 37 | 37 | 37 | 37 | 40 | 40 | 39 | 34 | 35 | 35 | 38 | 35 | 26 |