YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1932 | ----- | z | ----- | z | 64.85 | a | 70.53 | 76.82 | 83.83 | 90.13 | 89.76 | 86.55 | 72.58 | 64.43 | 51.48 | a | 75.10 | b | ||||||||
1933 | 51.29 | 52.54 | 64.61 | 66.92 | 74.39 | ----- | z | 91.97 | 91.18 | 86.20 | 78.94 | 64.82 | 56.26 | 70.83 | a | |||||||||||
1934 | 56.85 | 63.32 | 72.94 | 75.25 | 82.34 | 82.70 | 94.48 | 94.92 | 86.48 | 78.00 | 65.17 | 56.77 | 75.77 | |||||||||||||
1935 | 54.22 | b | 59.00 | 61.16 | 69.63 | 74.27 | 87.30 | 90.34 | 91.21 | 87.98 | 72.71 | 58.77 | 55.37 | 71.83 | ||||||||||||
1936 | 54.21 | 58.97 | 66.71 | 73.13 | 80.29 | 88.40 | 93.39 | 92.56 | 84.90 | a | 74.35 | 62.60 | 55.21 | b | 73.73 | |||||||||||
1937 | 45.56 | 57.64 | 62.95 | 69.36 | a | 78.23 | 86.18 | 93.92 | 92.97 | 89.40 | a | 77.24 | 64.83 | a | 58.74 | 73.09 | ||||||||||
1938 | 57.26 | 57.05 | 62.05 | 70.50 | a | 78.28 | a | 85.43 | 91.79 | 91.23 | 88.07 | 74.33 | a | 58.07 | 57.60 | a | 72.64 | |||||||||
1939 | 53.94 | 52.34 | 64.33 | a | 73.93 | 80.79 | 86.13 | 93.50 | 94.08 | 83.61 | b | 73.39 | 65.95 | 60.16 | 73.51 | |||||||||||
1940 | 58.10 | 59.17 | 66.94 | 72.38 | b | 82.90 | 89.78 | 92.94 | 94.47 | 86.48 | 77.16 | 61.72 | 58.19 | 75.02 | ||||||||||||
1941 | 56.61 | 61.34 | 65.23 | 67.88 | a | 80.65 | 84.52 | a | 92.68 | 88.48 | a | 80.63 | 71.13 | 64.09 | a | 57.13 | 72.53 | |||||||||
1942 | 56.13 | 55.20 | 61.24 | 67.53 | 76.06 | 84.58 | 93.87 | 90.97 | a | 84.68 | 74.45 | 64.00 | 57.26 | 72.16 | ||||||||||||
1943 | 55.39 | 60.11 | a | 66.94 | 72.91 | a | 79.71 | 83.83 | 92.97 | 91.48 | 89.48 | a | 76.42 | a | 62.77 | 54.60 | 73.88 | |||||||||
1944 | 52.53 | 53.52 | 60.10 | 67.37 | 76.38 | a | 79.70 | 89.69 | 92.50 | 86.05 | 75.60 | 59.90 | 54.40 | 70.64 | ||||||||||||
1945 | 53.07 | b | 56.61 | 58.47 | a | 68.42 | 77.79 | 83.20 | 93.10 | 91.11 | 87.68 | 76.44 | 61.45 | 52.98 | 71.69 | |||||||||||
1946 | 53.56 | 54.72 | a | 62.39 | 73.28 | 77.18 | 70.07 | g | 92.05 | a | 92.66 | 86.85 | 70.32 | 59.00 | a | 57.58 | 70.87 | a | ||||||||
1947 | 51.89 | 61.86 | 65.13 | 70.77 | 80.40 | 84.53 | 93.10 | 91.26 | 89.59 | a | 75.50 | a | 59.38 | 54.82 | a | 73.18 | ||||||||||
1948 | 55.97 | a | 57.22 | 58.10 | 72.14 | a | 78.56 | e | 84.50 | 89.92 | 90.56 | 85.20 | 74.34 | 60.50 | a | 50.90 | 71.49 | |||||||||
1949 | 44.79 | 53.39 | 61.26 | 72.27 | 77.69 | 88.43 | 91.90 | 89.73 | 89.43 | 72.44 | 67.45 | 52.97 | 71.81 | |||||||||||||
1950 | 51.48 | 60.77 | 66.24 | 75.08 | 76.52 | 84.65 | 90.65 | 91.37 | 82.45 | 77.88 | b | 64.93 | 59.21 | 73.44 | ||||||||||||
1951 | 53.19 | 56.27 | 60.55 | 65.68 | 74.69 | 83.02 | a | 91.73 | 88.50 | 85.03 | 74.27 | 61.07 | 53.22 | a | 70.60 | |||||||||||
1952 | 52.35 | 57.78 | 59.92 | 70.77 | 83.24 | 84.16 | a | 92.48 | 93.47 | 88.68 | 79.87 | 58.82 | 54.55 | 73.01 | ||||||||||||
1953 | 59.66 | 57.46 | 64.19 | 69.62 | a | 73.08 | 84.57 | 94.55 | 91.40 | 85.92 | 74.66 | 64.57 | 53.84 | c | 72.79 | |||||||||||
1954 | 55.52 | k | 63.57 | 62.48 | 75.15 | 79.56 | 83.80 | 93.28 | b | 89.00 | 86.50 | 76.35 | 65.87 | 54.62 | b | 75.47 | a | |||||||||
1955 | 50.44 | 54.38 | 63.29 | 68.75 | 75.76 | 85.23 | b | 90.32 | 91.98 | 86.76 | a | 77.32 | 61.25 | 55.37 | 71.74 | |||||||||||
1956 | 56.02 | 53.09 | a | 63.48 | 68.84 | b | 79.39 | 88.83 | 91.60 | 88.68 | 90.00 | 72.92 | k | 59.82 | b | 54.18 | 72.17 | a | ||||||||
1957 | 52.92 | 62.85 | a | 64.97 | 70.02 | 74.19 | 88.08 | 91.98 | 89.05 | a | 84.80 | 71.12 | a | 59.18 | 56.05 | 72.10 | ||||||||||
1958 | 55.84 | 61.34 | 59.82 | 68.45 | 80.82 | 85.23 | 89.58 | a | 92.69 | b | 87.53 | a | 77.87 | 62.00 | 58.48 | 73.31 | ||||||||||
1959 | 56.56 | 55.46 | 65.13 | 72.73 | 74.57 | a | 87.52 | a | 93.33 | a | 89.46 | d | 82.00 | b | 73.24 | 61.35 | 52.45 | 71.98 | ||||||||
1960 | 48.65 | 54.67 | 65.79 | 70.90 | 76.13 | 87.53 | 90.85 | 89.60 | 86.87 | 72.61 | 59.27 | 50.84 | 71.14 | |||||||||||||
1961 | 55.90 | a | 59.36 | 63.19 | 70.20 | 74.45 | a | 85.83 | a | 90.54 | d | 89.97 | b | 79.73 | 70.63 | 56.93 | 50.65 | 70.61 | ||||||||
1962 | 53.94 | 57.66 | 57.87 | 72.70 | 71.68 | 83.02 | 89.27 | 92.40 | 86.58 | 75.40 | 65.20 | 56.58 | 71.86 | |||||||||||||
1963 | 51.37 | 64.36 | 60.81 | 64.42 | 76.87 | 81.07 | 89.84 | 89.87 | 86.25 | 75.82 | 62.68 | 53.18 | 71.38 | |||||||||||||
1964 | 50.29 | 54.40 | 59.76 | 67.17 | 74.94 | 83.08 | 91.26 | 90.00 | b | 82.93 | 78.71 | 58.65 | 55.32 | 70.54 | ||||||||||||
1965 | 55.13 | 56.95 | 60.02 | 67.98 | 74.07 | a | 78.53 | a | 89.55 | 90.21 | 80.63 | 76.63 | 64.53 | 53.79 | 70.67 | |||||||||||
1966 | 51.27 | 54.30 | 64.16 | 70.85 | c | 77.71 | 84.42 | 90.60 | 91.92 | a | 84.82 | 73.68 | 64.05 | 56.87 | 72.05 | |||||||||||
1967 | 54.28 | a | 58.89 | 63.63 | a | 61.58 | 74.42 | 80.88 | 92.86 | b | 93.10 | a | 83.88 | 75.56 | 65.50 | a | 51.10 | 71.31 | ||||||||
1968 | 53.50 | 62.87 | b | 63.43 | a | 66.52 | a | 76.29 | 84.45 | a | 90.48 | c | 87.60 | a | 84.55 | 74.67 | a | 63.48 | a | 50.21 | 71.50 | |||||
1969 | 58.32 | c | 55.59 | a | 61.40 | b | 68.47 | 78.56 | 81.83 | a | 91.85 | 94.95 | a | 88.47 | a | 71.23 | 62.98 | a | 56.15 | 72.48 | ||||||
1970 | 53.95 | 59.23 | 61.63 | 64.38 | 76.65 | a | 84.98 | a | 92.94 | 93.66 | 84.17 | a | 71.95 | b | 62.95 | 54.23 | 71.73 | |||||||||
1971 | 54.62 | a | 58.25 | 62.85 | 66.74 | a | 73.29 | 83.73 | 92.63 | 92.33 | b | 85.98 | 69.21 | 60.53 | 51.45 | 70.97 | ||||||||||
1972 | 51.79 | 60.47 | 69.61 | 69.55 | 77.08 | 85.85 | 93.32 | 89.57 | a | 83.60 | 72.86 | b | 59.16 | a | 52.77 | a | 72.14 | |||||||||
1973 | 51.38 | a | 57.91 | 58.48 | 66.93 | 80.12 | a | 87.15 | 91.24 | 90.77 | 82.88 | 74.68 | 62.88 | 56.08 | a | 71.71 | ||||||||||
1974 | 55.47 | b | 56.96 | e | 63.97 | a | 68.85 | 77.27 | 88.90 | 90.18 | a | 89.66 | 87.95 | ----- | z | 61.52 | 50.58 | 71.94 | a | |||||||
1975 | 52.42 | 56.04 | 59.06 | 60.80 | 73.74 | 83.10 | 90.35 | 89.77 | 85.82 | 71.66 | 60.72 | 54.00 | 69.79 | |||||||||||||
1976 | 53.89 | 59.00 | a | 60.27 | 65.10 | 79.00 | 85.25 | 89.03 | 89.79 | 82.60 | 73.19 | 62.97 | a | 52.90 | 71.08 | |||||||||||
1977 | 54.12 | b | 60.27 | 57.95 | 68.14 | a | 69.60 | 86.00 | a | 89.90 | 89.31 | b | 83.50 | 76.48 | a | 64.52 | c | 56.89 | 71.39 | |||||||
1978 | 55.70 | a | 58.68 | 65.47 | 68.47 | 77.13 | 89.29 | a | 92.61 | 90.07 | a | 82.70 | 78.52 | 60.57 | b | 50.74 | d | 72.50 | ||||||||
1979 | 51.69 | b | 56.15 | a | 61.92 | a | 69.23 | b | 76.57 | a | 86.12 | d | 90.88 | f | 87.61 | 88.74 | a | 75.33 | a | 59.71 | a | 56.25 | a | 69.94 | a | |
1980 | 57.77 | a | 60.76 | 61.45 | 68.40 | a | 72.76 | 85.68 | 93.08 | 88.74 | 85.20 | 74.66 | 63.37 | d | 59.00 | 72.57 | ||||||||||
1981 | 58.69 | 60.14 | 62.61 | 70.71 | a | 76.53 | 89.00 | 91.85 | 92.60 | 85.97 | 71.19 | 63.78 | a | 57.81 | 73.41 | |||||||||||
1982 | 54.22 | f | 61.00 | b | 61.70 | d | 71.11 | b | 76.41 | d | 83.02 | d | 89.96 | c | 92.14 | c | 84.88 | f | 72.14 | c | 60.64 | h | 52.97 | b | 73.38 | c |
1983 | 56.90 | b | 59.90 | d | 63.94 | f | 64.95 | h | 76.65 | e | 82.79 | d | 90.87 | e | 90.02 | g | 89.71 | i | 76.26 | d | 63.39 | b | 57.54 | c | 70.54 | d |
1984 | 57.10 | g | 58.33 | e | 65.85 | g | 67.63 | d | 81.67 | e | 84.58 | e | 91.53 | l | 91.38 | f | 89.09 | h | 71.65 | h | 60.63 | c | 52.84 | f | 70.57 | g |
1985 | 52.85 | h | 55.04 | e | 60.86 | f | 72.85 | g | 78.22 | h | 87.59 | h | 93.28 | f | 91.81 | g | 80.44 | f | 74.56 | f | 61.59 | h | 58.06 | f | 55.04 | k |
1986 | 61.64 | f | 63.10 | b | 68.42 | g | 70.52 | g | 79.12 | g | 87.56 | c | 90.29 | g | 92.71 | g | 80.42 | e | 72.87 | d | 64.11 | g | 56.63 | d | 72.11 | g |
1987 | 55.79 | g | 60.55 | f | 63.10 | f | 75.38 | e | 78.33 | e | 87.48 | c | 89.16 | f | 91.23 | g | 86.43 | h | 80.02 | i | 63.36 | e | 53.19 | j | 76.14 | h |
1988 | 55.24 | h | 61.96 | e | 66.38 | f | 69.50 | g | 77.83 | g | 84.52 | h | 91.88 | e | 90.13 | e | 85.02 | e | 80.00 | f | 63.70 | g | 55.52 | f | 82.25 | h |
1989 | 53.60 | f | 60.90 | c | 70.17 | g | 76.60 | d | 79.15 | d | 86.07 | b | 93.25 | c | 89.82 | c | 85.91 | b | 75.90 | e | 64.56 | d | 57.21 | e | 76.94 | b |
1990 | 55.40 | f | 57.50 | b | 66.33 | h | 72.96 | d | 76.59 | h | 87.95 | j | 92.44 | g | 89.48 | d | 86.40 | d | 76.56 | g | 64.08 | e | 52.06 | e | 70.41 | f |
1991 | 55.67 | g | 63.90 | g | 60.80 | f | 70.56 | e | 75.78 | h | 82.08 | f | 88.73 | g | 90.24 | b | 86.60 | e | 79.29 | c | 63.17 | d | 55.66 | f | 77.97 | g |
1992 | 54.98 | c | 61.64 | 63.23 | e | 74.05 | b | 79.48 | a | 84.77 | f | 90.98 | f | 92.70 | c | 89.04 | d | 77.75 | e | 60.31 | d | 52.10 | e | 70.53 | b | |
1993 | 55.83 | h | 58.90 | b | 67.63 | e | 73.44 | d | 79.60 | e | 86.88 | d | 89.03 | a | 89.88 | f | 85.26 | c | 77.20 | f | 61.60 | e | 55.43 | c | 73.09 | c |
1994 | 57.54 | e | 56.48 | e | 67.02 | d | 71.06 | f | 77.20 | f | 89.66 | e | 92.26 | f | 94.55 | 88.43 | 75.06 | 57.58 | 54.27 | 71.18 | c | |||||
1995 | 56.08 | 65.00 | g | 65.35 | a | 70.10 | 75.07 | h | 84.17 | a | 91.81 | 94.37 | a | 89.98 | d | 77.52 | a | 69.88 | d | 58.62 | a | 75.79 | b | |||
1996 | 58.82 | 63.95 | 67.52 | g | 74.50 | f | 81.91 | d | 87.38 | 94.24 | f | 93.33 | e | 85.61 | b | 76.58 | e | 65.20 | c | 58.05 | c | 74.54 | c | |||
1997 | 59.00 | d | 59.78 | e | 68.94 | g | 71.52 | d | 84.43 | a | 83.87 | d | 89.54 | c | 92.88 | e | 88.42 | d | 73.41 | h | 66.15 | c | 54.11 | c | 74.97 | b |
1998 | 57.59 | c | 58.40 | d | 63.62 | g | 68.02 | e | 74.17 | e | 84.25 | f | 94.18 | f | 93.94 | e | 86.80 | g | 73.78 | f | 63.08 | d | 56.11 | d | 67.33 | e |
1999 | 58.09 | b | 60.34 | c | 64.42 | f | 66.47 | k | 77.55 | i | 84.79 | d | ----- | z | 91.04 | d | 87.81 | f | 79.95 | c | 68.23 | d | 57.21 | e | 71.38 | e |
2000 | 59.08 | e | 61.48 | f | 64.72 | f | 74.58 | f | 82.46 | h | 88.82 | e | 91.61 | d | 92.60 | e | 86.24 | e | 73.34 | f | 58.96 | e | 57.95 | b | 76.46 | e |
2001 | 53.92 | e | 56.96 | e | 66.16 | c | 69.37 | c | 84.08 | f | 88.98 | d | 90.90 | f | 92.78 | h | 88.62 | b | 78.42 | g | 67.79 | d | 53.80 | d | 68.20 | d |
2002 | 55.83 | d | 59.52 | b | 63.30 | h | 71.95 | i | 78.63 | d | 88.18 | e | 93.28 | f | 90.50 | d | 87.32 | e | 74.45 | i | 66.52 | d | 56.62 | e | 72.89 | d |
2003 | 62.45 | c | 58.89 | e | 66.31 | d | 68.62 | e | 78.88 | c | 85.66 | e | 94.26 | d | 92.92 | g | 89.37 | c | 83.91 | h | 61.90 | e | 57.09 | d | 72.34 | b |
2004 | 57.09 | c | 56.98 | d | 72.65 | d | 73.72 | g | 80.63 | d | 85.74 | e | 91.86 | c | 91.38 | c | 86.63 | g | 74.85 | e | 60.52 | f | 57.30 | c | 74.27 | c |
2005 | 58.31 | g | 60.02 | e | 66.34 | f | 71.09 | h | 79.93 | a | 86.20 | g | 94.10 | e | 92.84 | c | 85.85 | c | 75.74 | f | 67.10 | e | 58.67 | d | 76.93 | e |
2006 | 57.87 | d | 61.88 | h | 61.81 | e | 70.40 | f | 82.16 | f | 90.62 | e | 95.77 | e | 92.59 | c | 86.43 | c | 74.33 | k | 66.94 | c | 55.76 | f | 78.86 | e |
2007 | 53.20 | a | 61.50 | d | 68.16 | f | 70.87 | 80.48 | c | 87.80 | e | 93.04 | e | 93.88 | e | 85.36 | i | 75.12 | f | 67.64 | a | 53.29 | 73.52 | c | ||
2008 | 54.48 | c | 60.27 | a | 66.33 | d | 70.09 | g | 75.78 | f | 88.42 | e | 92.79 | c | 92.06 | e | 88.55 | b | 77.83 | a | 68.70 | b | 56.21 | 74.56 | b | |
2009 | 58.79 | j | 60.05 | 65.37 | a | 69.17 | a | 82.98 | g | 83.68 | 96.05 | 92.92 | 90.47 | 73.94 | 66.17 | 55.23 | 75.30 | b | ||||||||
2010 | 57.79 | c | 60.07 | 64.02 | 67.40 | 75.80 | a | 86.63 | 94.24 | 93.34 | 89.03 | 75.75 | a | 63.69 | d | 60.16 | 73.99 | |||||||||
2011 | 57.31 | 56.77 | 66.58 | a | 72.77 | 74.50 | 86.18 | 92.54 | c | 95.40 | 89.43 | 78.13 | 63.33 | a | 53.65 | 73.88 | ||||||||||
2012 | 58.75 | a | 60.23 | a | 64.34 | 71.87 | 81.48 | 88.64 | a | 91.97 | 93.48 | a | 88.84 | h | 77.97 | b | 67.88 | 58.95 | a | 74.14 | a | |||||
2013 | 54.15 | a | 58.74 | a | 69.40 | b | 72.71 | a | 80.74 | 87.18 | s | 93.60 | k | 91.89 | 86.77 | 73.61 | 65.79 | b | 56.92 | a | 71.07 | b | ||||
2014 | 62.00 | b | 64.04 | 68.69 | b | 73.29 | a | 78.50 | c | 88.25 | b | 93.29 | 90.68 | a | 89.90 | 78.64 | c | 65.50 | b | 58.00 | b | 75.90 | ||||
2015 | 57.94 | e | 64.85 | b | 70.21 | c | 71.44 | e | 72.81 | d | 88.80 | c | 90.75 | a | 95.18 | q | 88.26 | k | 81.14 | b | 62.77 | h | 53.98 | 72.44 | c | |
2016 | 55.61 | 64.86 | a | 67.04 | f | 71.70 | b | 75.10 | a | 88.07 | g | 93.14 | b | 93.91 | c | 85.92 | r | 77.75 | s | 67.18 | e | 55.96 | h | 74.50 | e | |
2017 | 53.16 | l | 59.80 | r | 67.00 | p | 74.26 | i | 78.83 | d | 88.98 | d | 94.63 | d | 94.02 | d | 85.02 | 78.48 | a | 69.86 | b | 58.69 | d | 81.06 | d | |
2018 | 60.84 | b | 58.67 | h | 64.79 | 75.55 | 75.75 | i | 87.36 | h | 93.60 | b | 94.48 | f | 89.67 | g | 74.72 | f | 67.00 | m | 57.45 | 70.45 | g | |||
2019 | 55.31 | e | 54.59 | a | 65.21 | b | 74.88 | 73.24 | 85.97 | a | 91.48 | i | 93.41 | b | 88.21 | k | 75.02 | a | 65.46 | b | 55.17 | j | 71.45 | c | ||
2020 | 58.26 | b | 60.04 | c | 61.94 | f | 72.07 | a | 82.92 | 87.29 | b | 93.79 | c | 96.60 | b | 90.20 | 80.64 | b | 66.34 | b | 56.98 | b | 76.83 | a | ||
2021 | 57.65 | 61.70 | a | 63.35 | a | 74.86 | a | 79.81 | 91.17 | c | 95.23 | 94.55 | a | 89.43 | a | 74.92 | a | 70.07 | a | 59.48 | b | 76.02 | ||||
2022 | 59.25 | e | 59.93 | a | 67.42 | 73.52 | 81.52 | f | 89.90 | a | 94.29 | b | 95.16 | 90.32 | b | 79.69 | e | 60.61 | c | 56.45 | a | 75.14 | a | |||
2023 | 56.15 | a | 55.59 | 62.53 | a | 73.88 | d | 79.35 | d | 84.92 | 96.63 | 93.77 | a | 87.34 | a | 78.57 | b | 66.55 | 59.73 | a | 74.58 | |||||
2024 | 57.70 | d | 60.85 | b | 63.72 | m | 72.91 | n | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 59.28 | j |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 55.20 | 58.75 | 63.76 | 70.29 | 77.57 | 85.83 | 92.18 | 91.71 | 86.34 | 75.41 | 63.35 | 55.48 | 72.44 | |||||||||||||
S.D. | 3.24 | 3.01 | 3.28 | 3.19 | 3.01 | 2.55 | 1.76 | 2.00 | 2.56 | 2.73 | 3.09 | 2.57 | 1.45 | |||||||||||||
SKEW | -0.58 | -0.07 | 0.44 | -0.43 | -0.08 | -0.26 | 0.16 | 0.07 | -0.49 | -0.06 | 0.07 | -0.25 | 0.72 | |||||||||||||
MAX | 62.45 | 64.86 | 72.94 | 76.60 | 84.43 | 91.17 | 96.63 | 96.60 | 90.47 | 81.14 | 70.07 | 60.16 | 76.02 | |||||||||||||
MIN | 44.79 | 52.34 | 57.87 | 60.80 | 69.60 | 78.53 | 89.03 | 87.60 | 79.73 | 69.21 | 56.93 | 50.21 | 69.79 | |||||||||||||
YRS | 78 | 85 | 72 | 78 | 77 | 80 | 76 | 82 | 78 | 73 | 85 | 84 | 48 |