YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1933 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 89.34 | a | 80.98 | 66.33 | 55.90 | 73.14 | h | |||
1934 | 57.92 | a | 62.79 | 74.26 | 77.68 | 83.98 | 84.27 | 95.66 | 93.59 | c | 85.20 | 76.61 | 64.53 | 56.10 | 76.05 | |||||||||||
1935 | 52.97 | 59.16 | 60.42 | 70.13 | 74.60 | 90.10 | 91.65 | 91.42 | 87.73 | 72.48 | 58.35 | 54.40 | 71.95 | |||||||||||||
1936 | 53.92 | 56.65 | b | 66.35 | a | 73.92 | 81.63 | 90.23 | 94.66 | b | 93.35 | 84.48 | 74.18 | a | 62.33 | c | 53.93 | b | 73.80 | |||||||
1937 | 41.55 | c | 56.09 | 63.92 | a | 70.98 | a | 80.21 | 88.23 | 94.97 | 95.82 | 89.87 | 77.30 | a | 65.12 | 59.66 | 73.64 | |||||||||
1938 | 57.74 | b | 55.29 | 60.23 | 71.97 | a | 79.40 | 87.88 | b | 93.79 | 92.33 | a | 88.43 | 73.72 | b | 58.93 | a | 57.63 | 73.11 | |||||||
1939 | 53.50 | 50.91 | a | 65.21 | 75.66 | b | 81.81 | 88.21 | a | 93.95 | 95.40 | 83.37 | d | 73.20 | c | 65.03 | 59.00 | a | 73.77 | |||||||
1940 | 56.85 | a | 59.05 | 68.24 | 73.60 | a | 84.76 | 93.28 | 96.11 | h | 95.17 | g | 84.98 | b | 76.00 | b | 60.74 | a | 56.55 | 71.41 | b | |||||
1941 | 53.89 | 59.95 | 63.18 | 66.63 | 80.70 | a | 85.34 | a | 93.81 | 88.47 | a | 81.00 | a | 68.93 | c | 63.53 | 56.11 | 71.79 | ||||||||
1942 | 56.06 | 55.38 | 60.02 | a | 68.40 | 76.94 | 86.40 | 95.73 | a | ----- | z | 85.75 | 75.86 | b | 65.38 | 57.37 | 71.21 | a | ||||||||
1943 | 55.08 | 58.91 | 65.60 | 72.42 | 82.21 | 85.73 | o | 93.47 | a | 89.79 | 86.93 | a | 73.42 | a | 59.25 | 53.36 | b | 71.86 | a | |||||||
1944 | 52.88 | a | 53.55 | 60.72 | b | 69.10 | a | 78.46 | c | 82.24 | a | 91.85 | 92.95 | a | 85.86 | b | 77.23 | 59.45 | 55.84 | 71.68 | ||||||
1945 | 54.95 | 57.77 | 57.92 | 70.30 | 79.74 | 86.07 | 95.02 | 90.45 | 85.77 | h | 77.81 | 63.45 | 54.05 | 71.59 | a | |||||||||||
1946 | 55.16 | 55.98 | 63.68 | 75.08 | 79.40 | 90.07 | 92.55 | 92.44 | 88.02 | 71.52 | 59.15 | 58.63 | 73.47 | |||||||||||||
1947 | 54.55 | 63.77 | 66.48 | 73.22 | 83.26 | 87.00 | 94.90 | 89.89 | 89.65 | 75.89 | 59.30 | 53.10 | 74.25 | |||||||||||||
1948 | 56.90 | a | 55.61 | b | 57.89 | 70.98 | 78.40 | a | 86.32 | 92.50 | 92.80 | i | 87.98 | 75.11 | 59.55 | a | 50.53 | 70.16 | a | |||||||
1949 | 42.39 | 51.70 | 60.69 | 75.24 | a | 77.94 | 89.12 | 94.06 | 91.79 | 90.17 | 72.75 | a | 69.55 | 53.19 | 72.38 | |||||||||||
1950 | 50.27 | 60.96 | 65.52 | 75.48 | 78.42 | 86.77 | 92.03 | 93.00 | 84.67 | 79.90 | 67.75 | 62.26 | 74.75 | |||||||||||||
1951 | 55.48 | j | 57.42 | h | 62.63 | 70.35 | 79.15 | g | 86.72 | 94.37 | 91.48 | 89.23 | 75.63 | 61.21 | f | 52.12 | b | 77.82 | d | |||||||
1952 | 50.05 | 56.81 | 57.53 | 70.17 | 83.65 | 84.42 | 93.50 | 94.98 | 88.75 | 82.65 | 60.18 | 53.58 | 73.02 | |||||||||||||
1953 | 59.60 | 57.95 | 63.84 | 69.60 | 71.89 | 85.77 | 96.35 | 92.12 | a | 88.71 | a | 75.50 | a | 65.21 | a | 57.34 | i | 75.14 | a | |||||||
1954 | 53.08 | a | 65.05 | 60.70 | a | 76.32 | 81.08 | 86.23 | 94.55 | 89.85 | 86.88 | 77.34 | 67.23 | 54.90 | a | 74.44 | ||||||||||
1955 | 49.84 | 53.52 | 62.76 | 67.62 | 75.81 | 86.62 | 90.32 | 90.28 | a | 87.72 | 78.77 | 63.67 | 57.11 | 72.00 | ||||||||||||
1956 | 57.59 | h | 53.83 | 64.58 | 70.17 | 78.74 | 88.88 | 92.55 | 90.87 | 90.98 | 73.15 | 62.35 | 57.50 | 74.87 | a | |||||||||||
1957 | 51.89 | 62.57 | 64.82 | 70.23 | 74.65 | 91.78 | 95.13 | 90.71 | 86.37 | 70.95 | 58.90 | 57.24 | 72.94 | |||||||||||||
1958 | 56.19 | 59.70 | a | 57.66 | 70.53 | 83.82 | 88.22 | 92.89 | 93.60 | 87.85 | 79.15 | 63.02 | 60.24 | 74.41 | ||||||||||||
1959 | 56.97 | b | 55.59 | 66.77 | 75.60 | 77.39 | 91.83 | 96.71 | 91.10 | 84.74 | a | 77.03 | 64.32 | 55.45 | 74.46 | |||||||||||
1960 | 49.45 | b | 56.24 | 66.90 | 73.45 | 79.35 | 92.90 | 95.71 | 92.85 | 87.97 | 75.23 | 62.70 | 54.71 | 73.96 | ||||||||||||
1961 | 56.71 | 60.30 | 63.81 | 72.69 | a | 77.97 | 91.90 | 94.65 | 92.05 | 82.73 | 74.45 | 59.57 | 53.65 | a | 73.37 | |||||||||||
1962 | 54.61 | 58.80 | 58.74 | 77.92 | 75.87 | 87.93 | 93.81 | 95.23 | 87.72 | 75.77 | 67.32 | 57.48 | 74.27 | |||||||||||||
1963 | 50.65 | a | 65.04 | a | 62.32 | 66.53 | 80.50 | 84.87 | c | 94.11 | 91.00 | 86.73 | 77.08 | 63.13 | 56.48 | 73.20 | ||||||||||
1964 | 51.56 | 55.26 | 60.11 | 68.38 | a | 76.29 | 85.55 | 93.90 | 92.13 | 84.88 | a | 80.45 | 59.86 | b | 56.31 | 72.06 | ||||||||||
1965 | 55.79 | 58.84 | 60.03 | 68.04 | d | 75.98 | 81.89 | b | 87.40 | b | 87.94 | 80.93 | 80.30 | a | 65.48 | 55.43 | a | 71.50 | ||||||||
1966 | 51.32 | 53.71 | 63.63 | 73.92 | 81.55 | 87.83 | 92.50 | 93.29 | 85.98 | 73.76 | 64.33 | 56.40 | 73.19 | |||||||||||||
1967 | 55.02 | 60.69 | a | 64.94 | 61.48 | 78.52 | a | 83.70 | 95.55 | 94.97 | 85.02 | 78.50 | 67.18 | 51.32 | a | 73.07 | ||||||||||
1968 | 54.27 | a | 63.84 | a | 65.03 | 69.68 | 78.38 | a | 86.15 | 88.12 | a | 88.08 | 86.55 | 74.76 | 63.53 | 50.40 | 72.40 | |||||||||
1969 | 56.92 | 54.93 | 63.34 | 71.47 | a | 81.69 | 85.43 | 93.21 | 97.32 | 89.10 | 72.65 | 64.98 | 57.15 | 74.02 | ||||||||||||
1970 | 54.39 | 61.07 | 63.84 | 67.55 | 81.05 | 88.92 | 96.47 | 95.42 | 84.86 | a | 72.10 | 63.18 | 53.03 | 73.49 | ||||||||||||
1971 | 54.65 | 59.29 | b | 63.66 | 69.15 | 73.65 | 87.22 | 95.48 | a | 90.98 | 87.67 | 69.50 | 61.03 | 50.98 | 71.94 | |||||||||||
1972 | 53.40 | 61.98 | 73.37 | 73.07 | 79.82 | 88.50 | 96.89 | 91.34 | 84.48 | 70.11 | 59.88 | a | 52.87 | 73.81 | ||||||||||||
1973 | 51.60 | a | 57.43 | 58.56 | 70.29 | a | 82.47 | 91.23 | 95.18 | 92.73 | 86.02 | 76.47 | 63.03 | 58.31 | 73.61 | |||||||||||
1974 | 52.95 | 58.54 | 65.40 | a | 70.86 | a | 80.69 | 93.20 | 93.26 | 92.63 | 89.30 | 76.76 | 64.33 | 54.35 | 74.36 | |||||||||||
1975 | 55.34 | 56.07 | 61.05 | 63.23 | 78.35 | 88.03 | 94.15 | 92.89 | 88.47 | 74.58 | 64.76 | a | 58.42 | 72.94 | ||||||||||||
1976 | 57.38 | a | 60.20 | a | 62.50 | 67.35 | 81.34 | 88.63 | 93.23 | 89.71 | 82.28 | 75.11 | 66.38 | 56.90 | 73.42 | |||||||||||
1977 | 54.92 | 64.09 | 59.87 | 73.77 | 72.77 | 91.07 | 94.94 | 92.85 | 86.48 | 78.80 | a | 68.45 | 60.97 | 74.91 | ||||||||||||
1978 | 54.98 | a | 58.61 | 66.18 | 68.58 | 79.27 | a | 91.78 | 95.61 | 91.95 | 85.07 | 80.27 | a | 61.90 | a | 51.34 | 73.79 | |||||||||
1979 | 49.19 | 56.30 | 61.82 | 71.37 | 77.85 | 89.25 | 93.21 | 88.26 | 89.78 | 77.00 | 61.10 | 57.90 | 72.75 | |||||||||||||
1980 | 57.11 | 60.59 | a | 61.44 | 70.35 | 73.90 | 87.38 | 95.74 | 92.42 | 87.09 | a | 77.81 | 65.90 | 62.06 | 74.32 | |||||||||||
1981 | 60.39 | 61.29 | 62.79 | 74.53 | 79.77 | a | 93.53 | a | 95.73 | 94.79 | 89.13 | 72.77 | 65.93 | 59.06 | 75.81 | |||||||||||
1982 | 54.40 | 61.12 | 62.60 | 71.66 | b | 78.53 | 85.68 | 91.74 | 92.82 | 84.27 | 73.45 | 60.32 | 53.34 | 72.49 | ||||||||||||
1983 | 57.55 | 59.16 | 62.73 | 65.42 | 79.87 | 86.42 | 92.63 | 87.55 | 87.48 | 74.77 | 62.97 | 56.15 | 72.72 | |||||||||||||
1984 | 57.63 | 59.38 | 67.15 | 69.69 | a | 85.42 | 87.42 | 91.37 | a | 90.85 | 88.18 | 71.60 | a | 60.83 | 52.27 | a | 73.48 | |||||||||
1985 | 53.32 | 55.77 | 61.94 | 75.30 | 80.21 | 91.27 | 95.11 | 93.11 | 79.53 | 74.40 | 59.97 | 56.87 | a | 73.07 | ||||||||||||
1986 | 60.48 | 61.04 | 68.68 | 71.74 | a | 80.63 | 91.28 | a | 89.79 | c | 94.07 | a | 80.38 | 72.10 | 65.22 | a | 55.82 | 74.27 | ||||||||
1987 | 53.40 | a | 59.07 | 61.89 | 75.58 | 79.06 | 90.53 | 90.37 | 92.13 | 86.45 | a | 78.37 | 60.88 | 50.24 | 73.17 | |||||||||||
1988 | 52.92 | e | 59.55 | j | 66.65 | a | 70.03 | a | 79.55 | 87.57 | 94.47 | 90.85 | 85.71 | a | 77.75 | c | 63.85 | 55.06 | 74.95 | a | ||||||
1989 | 52.03 | b | 57.15 | e | 69.44 | 79.57 | 80.82 | a | 89.88 | 95.27 | 90.16 | b | 86.38 | a | 75.83 | a | 66.10 | 57.13 | 74.98 | |||||||
1990 | 53.02 | b | 56.50 | 67.66 | 73.66 | n | 78.23 | 89.65 | 92.28 | f | 89.74 | 86.37 | 76.73 | g | 65.28 | c | 52.09 | b | 70.95 | c | ||||||
1991 | 53.47 | 64.89 | 58.34 | 69.97 | 76.88 | a | 84.38 | b | 92.12 | a | 91.68 | 87.57 | a | 79.98 | 64.60 | a | 55.20 | a | 73.26 | |||||||
1992 | 55.18 | a | 61.39 | a | 62.29 | 74.37 | 81.89 | 87.02 | a | 90.53 | b | 92.62 | b | 88.43 | a | 77.18 | 62.71 | d | 50.44 | 73.67 | ||||||
1993 | 53.02 | c | 56.61 | a | 67.53 | a | 74.40 | a | 81.58 | 87.77 | 89.85 | a | 91.53 | 86.95 | a | 76.37 | a | 60.52 | 55.22 | b | 73.45 | |||||
1994 | 58.45 | b | 56.00 | 67.38 | f | 70.44 | l | 78.30 | a | 93.10 | a | 94.62 | a | 94.61 | 87.97 | 73.00 | c | 56.57 | b | 53.59 | b | 74.62 | b | |||
1995 | 54.38 | b | 63.75 | b | 63.91 | b | 69.88 | 75.72 | a | 85.88 | 94.66 | 95.87 | a | 89.53 | a | 77.70 | a | 68.20 | b | 58.23 | c | 74.81 | ||||
1996 | 57.76 | b | 62.34 | a | 67.16 | c | 74.04 | c | 82.78 | b | 90.60 | a | 96.35 | a | 94.19 | d | 85.41 | b | 74.12 | a | 64.73 | 56.28 | b | 75.48 | ||
1997 | 56.02 | a | 59.40 | b | 70.34 | b | 71.55 | 86.98 | a | 86.86 | a | 92.00 | b | 94.52 | 87.78 | 73.86 | c | 64.63 | 53.33 | e | 74.77 | |||||
1998 | 55.34 | c | 55.00 | a | 62.80 | c | ----- | z | 73.65 | 83.78 | a | 95.24 | 94.23 | 85.29 | a | 73.48 | a | 62.91 | a | 55.92 | a | 72.51 | a | |||
1999 | 58.13 | e | 59.58 | h | 63.82 | c | 65.95 | b | 79.26 | b | 87.15 | 91.88 | a | 91.74 | b | 87.33 | a | 79.31 | g | 66.73 | f | 57.07 | c | 75.81 | c | |
2000 | 58.29 | b | 59.50 | g | 63.17 | d | 75.80 | b | 84.00 | 90.62 | 93.76 | 91.83 | e | 85.67 | d | 71.96 | c | 57.78 | a | 57.77 | 75.51 | a | ||||
2001 | 52.55 | 54.70 | a | 66.17 | b | 69.83 | c | 86.52 | 90.88 | 91.65 | 93.48 | a | 89.30 | c | 78.19 | 65.85 | 51.94 | 74.26 | ||||||||
2002 | 54.26 | 58.61 | 61.38 | a | 72.52 | 79.32 | 90.88 | 95.32 | 91.94 | 87.33 | 72.92 | a | 65.55 | 53.75 | a | 73.65 | ||||||||||
2003 | 61.39 | 57.85 | b | 64.52 | 67.03 | a | 80.06 | 89.12 | a | 95.92 | 91.05 | 88.57 | 82.00 | 58.50 | b | 54.13 | a | 74.18 | ||||||||
2004 | 54.71 | e | 54.65 | c | 71.75 | a | 71.21 | a | 80.69 | 88.57 | a | 93.31 | 91.65 | a | 84.61 | c | 72.28 | a | 58.27 | 54.45 | a | 73.01 | ||||
2005 | 55.07 | b | 56.37 | a | 62.91 | d | 68.19 | a | 80.42 | 86.08 | 95.06 | 91.26 | 84.21 | a | 74.50 | a | 65.57 | 56.08 | 72.98 | |||||||
2006 | 55.40 | 60.39 | 58.20 | a | 67.38 | 82.50 | a | 91.88 | 96.05 | 91.27 | a | 84.42 | 73.03 | a | 65.52 | 53.85 | 73.32 | |||||||||
2007 | 51.39 | 59.36 | 66.77 | a | 71.33 | a | 80.81 | 88.45 | b | 94.35 | a | 93.66 | 85.10 | a | 73.82 | 66.55 | b | 50.82 | 73.53 | |||||||
2008 | 51.35 | 57.21 | a | 66.23 | a | 71.22 | a | 76.45 | a | 91.07 | a | 93.76 | 92.45 | 87.25 | d | 75.35 | d | 67.13 | 53.50 | c | 73.58 | |||||
2009 | 57.87 | a | 56.37 | a | 64.07 | d | 68.09 | c | 85.09 | b | 84.71 | a | 95.29 | 92.05 | a | 89.14 | b | 69.36 | j | 64.68 | b | 52.21 | 73.60 | a | ||
2010 | 54.50 | e | 57.34 | 61.34 | b | 67.54 | c | 74.88 | c | 87.55 | a | 94.74 | 91.81 | 87.30 | 73.60 | 61.38 | a | 56.66 | 72.39 | |||||||
2011 | 55.23 | a | 54.31 | a | 64.13 | 71.12 | a | 75.02 | 86.45 | a | 91.69 | 94.78 | b | 87.96 | c | 76.03 | a | 59.22 | a | 51.67 | a | 72.30 | ||||
2012 | 57.37 | 58.38 | a | 61.87 | d | 71.10 | 82.47 | a | 89.29 | a | 91.47 | 91.65 | a | 87.54 | b | 76.97 | a | 65.64 | a | 54.76 | 74.04 | |||||
2013 | 51.71 | 56.14 | 68.09 | d | 73.64 | b | 80.77 | c | 90.98 | c | 93.74 | 90.19 | d | 84.43 | 71.30 | a | 62.62 | 55.68 | c | 73.27 | ||||||
2014 | 60.60 | a | 62.50 | a | 67.12 | b | 72.79 | a | 79.77 | a | 89.76 | a | 94.24 | 88.98 | a | 87.25 | 77.70 | a | 64.38 | 55.71 | c | 75.07 | ||||
2015 | 56.55 | 64.61 | a | 69.82 | a | 71.05 | 74.84 | b | 90.30 | 89.55 | a | 94.08 | 87.79 | a | 77.98 | a | 60.79 | a | 52.69 | b | 74.17 | |||||
2016 | 53.65 | 61.74 | j | 68.00 | h | 71.93 | b | 76.15 | d | 92.78 | c | 95.41 | b | 92.69 | 83.04 | d | 78.27 | e | 65.63 | 54.85 | e | 76.44 | b | |||
2017 | 53.96 | c | 59.19 | j | 68.86 | b | 73.25 | b | 79.06 | 91.78 | 95.61 | c | 91.64 | m | 75.83 | x | 77.24 | d | 67.50 | e | 57.17 | g | 75.91 | d | ||
2018 | 58.50 | e | 59.38 | t | 64.08 | m | 74.47 | n | 79.75 | g | 88.26 | k | 93.57 | j | 90.84 | l | 86.37 | k | 72.85 | n | 61.95 | j | 53.54 | h | 58.50 | k |
2019 | 54.69 | o | 48.53 | l | 62.54 | q | 71.85 | m | 71.00 | s | ----- | z | 92.75 | q | ----- | z | 79.43 | p | 69.09 | c | 62.48 | e | 52.04 | e | 61.20 | i |
2020 | 55.59 | i | 53.83 | n | 56.61 | m | 66.83 | g | 74.63 | l | 82.95 | i | 94.00 | u | 97.00 | p | 89.68 | h | 75.27 | a | 64.04 | d | 55.94 | d | 65.08 | i |
2021 | 55.32 | f | 59.96 | a | 57.85 | e | 73.10 | i | 76.56 | d | 91.16 | a | 95.37 | 90.52 | a | 85.22 | c | 72.59 | c | 69.45 | a | 55.52 | e | 75.42 | b | |
2022 | 56.02 | i | 58.74 | c | 67.47 | b | 74.28 | a | 77.24 | j | 87.33 | l | 93.50 | i | 93.26 | l | 88.45 | t | 74.00 | p | 61.21 | r | 54.26 | n | 66.83 | i |
2023 | 54.79 | n | 54.35 | e | 60.73 | p | 71.98 | i | 73.30 | d | 80.80 | g | 96.02 | j | 89.68 | q | 82.39 | g | 75.19 | m | 62.94 | c | 57.57 | j | 63.53 | i |
2024 | 53.93 | h | 58.29 | c | 59.76 | n | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 58.29 | k |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 54.55 | 58.42 | 63.90 | 71.26 | 79.34 | 88.42 | 93.74 | 92.15 | 86.55 | 75.43 | 63.31 | 55.23 | 73.54 | |||||||||||||
S.D. | 3.33 | 3.22 | 3.61 | 3.27 | 3.21 | 2.71 | 1.99 | 1.98 | 2.31 | 2.96 | 2.97 | 2.67 | 0.99 | |||||||||||||
SKEW | -1.07 | 0.18 | 0.40 | -0.15 | -0.05 | -0.10 | -0.91 | 0.01 | -0.75 | 0.09 | -0.14 | 0.24 | 0.14 | |||||||||||||
MAX | 61.39 | 65.05 | 74.26 | 79.57 | 86.98 | 93.53 | 96.89 | 97.32 | 90.98 | 82.65 | 69.55 | 62.26 | 76.05 | |||||||||||||
MIN | 41.55 | 50.91 | 57.53 | 61.48 | 71.89 | 81.89 | 87.40 | 87.55 | 79.53 | 68.93 | 56.57 | 50.24 | 71.50 | |||||||||||||
YRS | 83 | 82 | 84 | 82 | 85 | 84 | 83 | 81 | 84 | 85 | 87 | 86 | 67 |