YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1939 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1940 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 88.22 | 92.08 | 90.55 | 84.45 | 74.18 | 60.00 | 56.77 | a | 78.03 | e | ||||||
1941 | 53.82 | a | 57.82 | 58.90 | 61.22 | 74.90 | 81.30 | 89.03 | 86.47 | 80.48 | b | 68.03 | 63.12 | 53.76 | 69.07 | |||||||||||
1942 | 55.00 | 52.07 | 57.44 | 64.30 | 73.78 | a | 82.62 | 92.27 | 88.06 | 84.18 | 72.81 | 64.77 | 56.13 | a | 70.29 | |||||||||||
1943 | 52.90 | 59.89 | a | 62.19 | 70.85 | 77.19 | 83.21 | a | 90.35 | 86.39 | 85.66 | a | 73.65 | a | 64.16 | b | 54.37 | 71.73 | ||||||||
1944 | 51.87 | 51.79 | 55.97 | b | 62.50 | 73.05 | b | 79.15 | 89.23 | 90.98 | c | 83.02 | c | 75.72 | b | 58.11 | c | 54.61 | 68.83 | |||||||
1945 | 51.60 | a | 53.81 | d | 54.38 | a | 64.20 | c | 74.60 | 80.75 | b | 91.42 | a | 90.37 | 86.45 | a | 75.74 | 61.68 | 52.35 | 69.78 | ||||||
1946 | 51.50 | b | 53.76 | a | 59.83 | a | 73.05 | b | 73.05 | 85.24 | a | 89.19 | b | 89.12 | a | 84.43 | a | 67.55 | 57.07 | a | 58.07 | a | 70.15 | |||
1947 | 50.06 | 61.02 | a | 61.45 | 65.54 | b | 77.97 | 81.88 | a | 92.02 | a | 87.83 | k | 87.62 | 74.56 | 56.97 | 51.85 | 69.18 | a | |||||||
1948 | 54.29 | 52.64 | 54.73 | a | 67.92 | 75.25 | a | 82.33 | a | 89.21 | 90.33 | a | 86.97 | a | 75.89 | 58.10 | a | 53.00 | 70.05 | |||||||
1949 | 43.10 | 51.18 | 58.10 | 69.65 | 76.34 | 85.55 | 91.23 | 89.82 | 86.28 | 69.77 | 67.60 | 52.90 | 70.13 | |||||||||||||
1950 | 51.68 | 58.88 | 60.31 | 69.77 | 73.15 | 83.87 | 88.00 | 89.60 | 81.43 | 80.34 | 67.43 | 61.73 | 72.18 | |||||||||||||
1951 | 53.11 | 54.16 | c | 59.52 | 65.90 | 74.95 | 81.82 | 92.27 | 87.90 | 84.75 | 73.69 | 60.13 | 51.92 | 70.01 | ||||||||||||
1952 | 51.56 | 54.17 | 52.68 | 66.43 | 79.02 | 84.38 | 90.73 | 91.19 | 87.40 | 81.55 | 58.30 | 52.47 | 70.82 | |||||||||||||
1953 | 55.65 | 54.68 | 60.18 | 65.67 | 70.39 | 83.95 | 91.19 | 88.92 | 86.50 | 73.74 | 63.28 | 50.82 | 70.41 | |||||||||||||
1954 | 54.47 | 63.18 | 59.13 | 72.00 | 76.60 | 82.72 | 91.02 | 86.87 | 86.08 | 75.94 | 66.37 | 55.95 | 72.53 | |||||||||||||
1955 | 48.44 | 51.48 | 60.78 | a | 65.73 | 74.32 | 82.63 | 86.02 | 85.92 | 84.67 | 77.68 | a | 61.67 | 57.95 | a | 69.77 | ||||||||||
1956 | 57.55 | 50.91 | 62.94 | 66.35 | 77.29 | 87.28 | a | 90.32 | 87.03 | 88.23 | 73.11 | 60.22 | 54.74 | 71.33 | ||||||||||||
1957 | 53.60 | 61.57 | 60.58 | 66.32 | 72.24 | 85.63 | 91.21 | 87.74 | 83.97 | 70.53 | 57.38 | 58.31 | 70.76 | |||||||||||||
1958 | 55.21 | 58.71 | 55.42 | 65.77 | 81.21 | 86.45 | 91.26 | 90.27 | 83.98 | 74.50 | 60.37 | 59.61 | 71.90 | |||||||||||||
1959 | 55.65 | 52.70 | 61.97 | 73.00 | 73.97 | 90.05 | 93.98 | 87.08 | 82.88 | 73.60 | 62.03 | 54.87 | 71.81 | |||||||||||||
1960 | 48.26 | 49.28 | 64.03 | 68.62 | 75.31 | 88.68 | 91.79 | 89.21 | 85.70 | 71.03 | 62.75 | 54.47 | 70.76 | |||||||||||||
1961 | 57.97 | 58.55 | 60.19 | 69.10 | 74.63 | 87.27 | 91.32 | 87.56 | 80.72 | 73.77 | 58.62 | 52.85 | 71.05 | |||||||||||||
1962 | 51.61 | 55.96 | 54.45 | 72.55 | 72.95 | c | 83.85 | 89.94 | 92.65 | 85.27 | 74.48 | 66.23 | 57.79 | 71.48 | ||||||||||||
1963 | 49.27 | 60.57 | 59.44 | 63.73 | 78.15 | 79.72 | 91.42 | 85.42 | 85.17 | 76.40 | 60.47 | 54.03 | 70.32 | |||||||||||||
1964 | 48.26 | 50.03 | 55.05 | 64.10 | 72.76 | 80.65 | 90.11 | 83.44 | 79.38 | 75.60 | 54.60 | 51.13 | 67.09 | |||||||||||||
1965 | 51.13 | 51.20 | 54.44 | 64.25 | 72.26 | 78.43 | 90.77 | 89.94 | 81.43 | 76.94 | 65.10 | 53.26 | 69.09 | |||||||||||||
1966 | 50.82 | a | 50.30 | 62.00 | 69.88 | a | 78.90 | 85.20 | 91.85 | 89.77 | 84.02 | 72.71 | 63.19 | d | 54.76 | 71.12 | ||||||||||
1967 | 53.88 | f | 57.77 | d | 61.68 | 60.29 | a | 74.53 | 81.17 | 89.68 | 89.34 | 83.93 | 76.23 | 64.40 | a | 49.27 | 71.66 | a | ||||||||
1968 | 53.89 | 61.80 | a | 60.77 | 65.87 | 74.68 | 86.17 | 88.17 | b | 84.65 | 83.60 | 74.23 | 61.22 | 51.34 | 70.53 | |||||||||||
1969 | 55.55 | 52.84 | 57.26 | 68.50 | 78.13 | a | 81.16 | a | 90.20 | a | 92.08 | 84.57 | a | 68.50 | a | 61.37 | 54.85 | a | 70.42 | |||||||
1970 | 51.62 | a | 59.29 | 56.85 | 62.20 | 76.24 | 85.86 | b | 91.50 | 91.34 | 81.13 | 69.23 | 62.71 | a | 53.77 | 70.14 | ||||||||||
1971 | 53.89 | 55.89 | 61.55 | a | 65.68 | 72.28 | a | 83.60 | 92.10 | a | 87.61 | 84.13 | 67.68 | 59.83 | a | 50.37 | 69.55 | |||||||||
1972 | 52.18 | 59.14 | 70.37 | 69.55 | 76.98 | 85.22 | 87.87 | 87.56 | 83.93 | a | 70.52 | 56.50 | 51.24 | 70.92 | ||||||||||||
1973 | 49.34 | 55.05 | 52.56 | 63.46 | b | 77.24 | 85.53 | 89.39 | 89.29 | 82.92 | 74.94 | 60.17 | 55.52 | 69.62 | ||||||||||||
1974 | 52.44 | 55.20 | 61.78 | a | 68.30 | 76.15 | 90.18 | 89.10 | 87.60 | 83.45 | 72.53 | 61.50 | 49.50 | 70.64 | ||||||||||||
1975 | 52.11 | 53.41 | 56.23 | 59.22 | 73.68 | 82.47 | 89.68 | 89.32 | 83.35 | 71.79 | 61.03 | 54.39 | 68.89 | |||||||||||||
1976 | 54.58 | a | 57.02 | 58.15 | 64.33 | 76.23 | 84.72 | 88.45 | 87.23 | 79.53 | 69.24 | 61.20 | ----- | z | 70.97 | a | ||||||||||
1977 | 50.57 | a | 58.54 | 56.34 | 68.98 | 71.44 | 87.70 | 91.85 | 89.84 | 82.95 | 75.32 | 63.87 | 57.74 | 71.26 | ||||||||||||
1978 | 53.37 | a | 54.39 | 62.39 | 64.63 | 74.94 | 86.63 | 90.76 | 87.74 | 82.53 | 76.50 | a | 58.20 | 48.74 | 70.07 | |||||||||||
1979 | 45.63 | 52.41 | 56.13 | 65.58 | 73.60 | 85.62 | 89.15 | a | 86.60 | 88.45 | 74.37 | 56.84 | b | 56.11 | 69.21 | |||||||||||
1980 | 53.24 | 56.28 | b | 54.95 | 65.78 | a | 69.82 | 84.72 | 90.95 | 85.34 | 84.82 | 74.47 | 64.13 | 61.62 | a | 70.51 | ||||||||||
1981 | 57.50 | 59.86 | 61.42 | f | 71.50 | 75.33 | a | 88.75 | 90.69 | 91.32 | 85.25 | 69.89 | 65.00 | 57.29 | 73.85 | a | ||||||||||
1982 | 51.03 | b | 56.76 | a | 57.65 | 67.07 | 73.61 | 81.08 | 88.53 | 89.19 | 82.50 | a | 71.48 | b | 58.43 | 50.67 | b | 69.00 | ||||||||
1983 | ----- | z | 53.73 | b | 55.92 | a | 59.24 | a | 74.19 | 80.15 | 88.60 | a | 86.63 | 84.45 | 71.03 | 57.50 | 51.00 | e | 69.31 | a | ||||||
1984 | 53.65 | a | 55.39 | b | 61.20 | a | 63.62 | a | 79.76 | 81.10 | 86.25 | a | 85.61 | 81.71 | b | 64.68 | 57.81 | a | 49.25 | a | 68.34 | |||||
1985 | 49.89 | 53.18 | 57.03 | 69.85 | 75.94 | 86.86 | a | 90.13 | a | 89.11 | 75.98 | b | 71.00 | 57.09 | a | 54.15 | 69.18 | |||||||||
1986 | 59.37 | 57.91 | a | 65.00 | 68.92 | 77.02 | 87.65 | 88.03 | a | 90.19 | 78.91 | a | 70.56 | 62.09 | b | 54.68 | a | 71.69 | ||||||||
1987 | 52.08 | 55.36 | 58.15 | 73.02 | 76.97 | a | 86.57 | 87.68 | 87.71 | 82.97 | 77.28 | a | 59.31 | a | 49.82 | 70.58 | ||||||||||
1988 | 51.86 | b | 59.16 | 61.71 | 67.63 | 76.48 | 87.32 | 91.90 | 88.32 | 83.55 | 79.52 | 62.03 | 54.50 | 72.00 | ||||||||||||
1989 | 53.31 | 57.54 | 65.68 | 74.83 | 77.31 | 84.97 | 92.87 | 88.37 | 85.15 | 74.29 | 65.06 | c | 55.57 | a | 72.91 | |||||||||||
1990 | 53.16 | 52.79 | 62.08 | 69.80 | 74.32 | 89.17 | a | 89.30 | a | 86.42 | 84.42 | 73.72 | a | 64.56 | f | 51.40 | 71.51 | a | ||||||||
1991 | 52.95 | 62.54 | 54.10 | a | 65.28 | 73.16 | 81.40 | 89.00 | 90.10 | 83.97 | 77.73 | 61.03 | 54.57 | a | 70.49 | |||||||||||
1992 | 53.13 | a | 58.86 | 59.87 | 71.64 | a | 78.03 | 83.10 | a | 87.10 | a | 87.47 | a | 85.02 | 76.52 | a | 59.30 | 51.67 | a | 70.98 | ||||||
1993 | 54.39 | 54.48 | 61.77 | a | 68.92 | 79.44 | 85.13 | 87.68 | 87.76 | 83.75 | 74.06 | d | 58.55 | 55.04 | c | 70.91 | ||||||||||
1994 | 55.65 | a | 54.13 | a | 62.55 | 69.00 | 74.62 | a | 88.60 | 90.73 | a | 93.18 | 85.50 | a | 71.87 | a | 56.96 | e | 56.09 | h | 72.98 | a | ||||
1995 | 52.14 | c | 61.16 | c | 61.34 | c | 64.77 | d | 71.55 | a | 81.85 | g | 91.00 | a | 92.42 | a | 87.17 | d | 76.29 | c | 67.58 | f | 59.31 | g | 73.09 | c |
1996 | 56.11 | m | 61.50 | i | 63.36 | j | 70.59 | s | 78.35 | k | 88.76 | k | 91.29 | n | 92.33 | j | 81.34 | k | 74.32 | n | 65.70 | h | 55.42 | m | ----- | z |
1997 | 52.50 | i | 56.00 | f | 67.39 | h | 67.07 | i | 82.84 | o | 83.58 | j | 90.89 | l | 91.29 | l | 88.45 | i | 74.00 | k | 65.25 | n | 52.93 | p | ----- | z |
1998 | 56.04 | q | 50.34 | l | 60.05 | l | 62.20 | h | 72.95 | j | 77.16 | k | 93.15 | e | 93.50 | l | 85.46 | d | 74.08 | k | 63.26 | i | 54.52 | k | 89.31 | j |
1999 | 57.52 | e | 58.36 | j | 61.80 | k | 62.17 | f | 74.59 | h | 85.26 | e | 89.05 | l | 90.83 | j | 84.03 | m | 78.50 | o | 72.33 | u | 55.77 | t | 71.39 | j |
2000 | 58.25 | o | 59.73 | p | 61.96 | q | 72.89 | p | 80.32 | n | 88.62 | n | 91.57 | q | 90.07 | p | 88.68 | p | 72.50 | n | 54.27 | s | 56.33 | v | ----- | z |
2001 | 53.19 | r | 53.12 | p | 60.38 | r | 67.90 | o | 82.89 | m | 87.62 | n | 91.58 | m | 90.19 | m | 88.82 | p | 77.25 | s | 64.46 | q | 51.68 | q | ----- | z |
2002 | 54.57 | q | 58.69 | o | 62.89 | q | 72.35 | m | 76.31 | o | 87.87 | o | 92.09 | n | 88.79 | q | 87.09 | n | 73.97 | p | 65.12 | q | 56.44 | v | ----- | z |
2003 | 62.85 | r | 56.71 | n | 59.84 | o | 62.46 | p | 81.22 | v | 84.66 | n | 93.04 | q | 91.33 | p | 87.75 | n | 83.75 | s | 60.21 | r | 56.35 | u | ----- | z |
2004 | 55.25 | o | 54.17 | q | 70.57 | p | 70.57 | p | 76.80 | p | 83.56 | m | 90.65 | r | 88.97 | p | 82.42 | q | 73.57 | p | 58.30 | o | 53.92 | r | ----- | z |
2005 | 53.50 | n | 56.00 | k | 58.47 | l | ----- | z | 77.75 | q | 86.73 | q | 93.14 | x | 88.53 | p | 87.91 | s | 73.75 | q | 66.75 | p | 55.67 | s | ----- | z |
2006 | 57.29 | q | 59.54 | o | 59.19 | o | 68.30 | t | 80.96 | r | 89.04 | p | 93.14 | t | 89.68 | l | 82.54 | p | 74.23 | p | 67.04 | p | 54.86 | x | ----- | z |
2007 | 53.27 | r | 57.82 | n | 64.10 | p | 68.50 | m | 79.07 | p | 87.00 | o | 93.20 | u | 92.41 | o | 85.18 | p | 77.15 | n | 71.67 | o | 52.50 | u | ----- | z |
2008 | 50.37 | p | 54.50 | o | 62.73 | p | 66.93 | p | 72.75 | u | 85.88 | r | 90.97 | p | 90.50 | r | 86.88 | q | 78.00 | o | 67.72 | u | 57.25 | u | ----- | z |
2009 | 57.92 | r | 56.50 | o | 63.41 | o | 67.65 | m | 82.42 | r | 84.33 | l | 93.97 | p | ----- | z | 88.64 | s | 72.88 | s | 69.35 | q | 51.75 | s | ----- | z |
2010 | 55.50 | s | 56.33 | p | 58.88 | n | 66.79 | p | 70.85 | r | 81.62 | v | 94.00 | r | 90.67 | s | 86.39 | u | 75.96 | q | 62.53 | o | 61.83 | v | ----- | z |
2011 | 54.69 | r | 54.50 | q | 63.88 | r | 69.73 | s | 71.97 | n | 85.36 | p | ----- | z | ----- | z | ----- | z | 78.36 | q | 61.57 | o | 49.21 | x | ----- | z |
2012 | 56.00 | v | 56.27 | r | 60.58 | s | ----- | z | 81.61 | v | 89.12 | v | 91.45 | u | 92.70 | u | ----- | z | 79.94 | w | 66.50 | w | ----- | z | ----- | z |
2013 | 56.25 | y | 51.94 | s | 66.32 | t | 68.90 | t | 77.27 | t | 87.36 | s | 91.50 | r | 90.25 | y | ----- | z | 72.56 | v | 66.75 | t | 55.50 | w | ----- | z |
2014 | 57.17 | y | 60.95 | q | 64.62 | s | 70.55 | t | 75.60 | u | 86.00 | s | 92.00 | v | 84.70 | u | 84.57 | w | 76.78 | v | ----- | z | ----- | z | ----- | z |
2015 | 58.62 | w | 60.85 | r | 65.10 | u | 70.38 | r | ----- | z | 90.14 | s | 90.91 | t | ----- | z | 83.57 | w | 73.62 | w | 58.58 | x | ----- | z | ----- | z |
2016 | ----- | z | ----- | z | 64.40 | u | 70.91 | s | 74.65 | u | ----- | z | 92.88 | w | 89.45 | u | ----- | z | ----- | z | 69.08 | x | 58.25 | y | ----- | z |
2017 | 54.50 | x | 59.56 | t | 64.83 | s | ----- | z | 75.75 | s | 92.42 | x | 91.03 | p | 91.67 | m | 84.60 | o | 79.53 | o | 70.61 | p | 61.04 | s | ----- | z |
2018 | 61.29 | n | 57.77 | o | 63.15 | r | 74.53 | o | 76.97 | m | 87.94 | n | 94.04 | s | 89.78 | m | 88.07 | p | 72.88 | o | 62.64 | p | 56.90 | u | ----- | z |
2019 | 55.22 | o | 51.09 | l | 62.63 | p | 69.38 | n | 70.91 | n | 84.50 | n | 92.77 | r | 93.12 | n | 84.84 | n | 73.43 | p | 67.58 | q | 55.17 | s | ----- | z |
2020 | 55.97 | o | 54.28 | m | 59.98 | k | 69.28 | l | 79.40 | p | 86.31 | n | 96.07 | x | 96.50 | n | 88.44 | n | 79.59 | n | 66.70 | t | 60.00 | u | ----- | z |
2021 | 54.57 | p | 58.62 | p | 58.84 | l | 71.04 | q | 77.91 | o | 89.64 | l | 89.36 | t | 88.17 | m | 85.09 | m | 70.50 | w | ----- | z | ----- | z | ----- | z |
2022 | ----- | z | 56.78 | l | 66.35 | u | 71.50 | n | 76.50 | p | 89.22 | l | 93.50 | q | 90.25 | w | 87.33 | o | 76.00 | o | 59.96 | p | 51.67 | v | ----- | z |
2023 | 53.62 | s | 52.75 | l | 57.28 | m | 67.23 | q | 77.77 | p | 81.44 | n | ----- | z | 93.43 | q | 85.25 | t | 76.25 | w | 69.36 | w | 61.45 | t | ----- | z |
2024 | 50.90 | u | 58.38 | p | 59.79 | q | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 52.67 | 55.86 | 59.21 | 67.02 | 75.23 | 84.48 | 90.19 | 88.58 | 83.97 | 73.55 | 60.98 | 54.05 | 70.43 | |||||||||||||
S.D. | 2.97 | 3.56 | 3.55 | 3.60 | 2.44 | 2.91 | 1.73 | 2.10 | 2.37 | 3.33 | 3.10 | 3.03 | 1.15 | |||||||||||||
SKEW | -0.49 | 0.18 | 0.33 | -0.03 | 0.12 | -0.02 | -0.31 | 0.01 | -0.78 | -0.19 | 0.23 | 0.44 | -0.30 | |||||||||||||
MAX | 59.37 | 63.18 | 70.37 | 74.83 | 81.21 | 90.18 | 93.98 | 93.18 | 88.45 | 81.55 | 67.60 | 61.73 | 72.91 | |||||||||||||
MIN | 43.10 | 49.28 | 52.56 | 59.22 | 69.82 | 78.43 | 86.02 | 83.44 | 75.98 | 64.68 | 54.60 | 48.74 | 67.09 | |||||||||||||
YRS | 54 | 55 | 54 | 55 | 55 | 56 | 57 | 55 | 57 | 56 | 54 | 53 | 47 |