YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1930 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1931 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1932 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1933 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1934 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1935 | 63.20 | u | 62.61 | 74.58 | 88.27 | 89.63 | a | 91.03 | 90.42 | 92.87 | 77.40 | 75.65 | 63.03 | 51.45 | 77.90 | a | ||||||||||
1936 | 57.97 | 60.90 | i | 68.00 | 75.20 | 80.41 | b | 92.23 | 90.84 | 91.37 | a | 82.03 | 72.00 | 64.47 | m | 61.24 | b | 77.13 | b | |||||||
1937 | 54.10 | a | 63.25 | 62.13 | 80.33 | 83.06 | 90.40 | 92.00 | 90.55 | 83.41 | c | 76.93 | a | 65.20 | 57.87 | 74.94 | ||||||||||
1938 | 58.43 | a | 63.29 | 68.19 | 76.90 | 84.32 | 89.53 | 86.32 | 88.87 | 80.57 | 77.90 | 64.77 | 59.19 | 74.86 | ||||||||||||
1939 | 57.68 | 58.04 | 69.23 | 77.10 | 87.35 | 93.27 | 89.45 | 87.23 | 86.71 | b | 76.90 | 57.78 | g | 61.65 | 76.78 | a | ||||||||||
1940 | 50.90 | 59.59 | 68.94 | 77.27 | 82.74 | 87.40 | 90.42 | 86.39 | 84.70 | 77.40 | a | 61.17 | 59.68 | 73.88 | ||||||||||||
1941 | 54.13 | 59.57 | 60.71 | 69.17 | 77.06 | 82.63 | 87.61 | 88.06 | 79.10 | 70.84 | 63.33 | 55.86 | b | 70.67 | ||||||||||||
1942 | 54.32 | 54.18 | 63.03 | a | 71.03 | 82.06 | 90.80 | 89.94 | 84.74 | 78.00 | 70.81 | 68.63 | 58.35 | 72.16 | ||||||||||||
1943 | 55.84 | 67.04 | 66.13 | 79.97 | 82.06 | 89.83 | 87.45 | 94.94 | 83.73 | 74.90 | 61.93 | 52.10 | 74.66 | |||||||||||||
1944 | 53.74 | 58.21 | 65.67 | a | 72.27 | 82.87 | 92.07 | 91.16 | 89.87 | 76.93 | 72.55 | 62.59 | a | 54.00 | 72.66 | |||||||||||
1945 | 57.21 | b | 63.83 | d | 68.76 | b | 75.27 | d | 86.73 | a | 92.14 | b | 86.47 | a | 91.46 | c | ----- | z | 71.71 | c | 72.36 | b | 59.77 | e | 75.07 | a |
1946 | 53.69 | e | 64.36 | c | 70.36 | c | 80.50 | b | 83.48 | d | 90.17 | 90.90 | 90.42 | 82.57 | b | 75.60 | a | 61.78 | c | 60.39 | c | 75.35 | ||||
1947 | 51.36 | c | 58.08 | d | 66.50 | c | 74.68 | b | 84.07 | a | 92.33 | 93.52 | 89.13 | 87.70 | 80.90 | 60.86 | h | 54.77 | 75.73 | a | ||||||
1948 | 49.26 | 57.14 | 62.71 | 80.57 | 84.35 | 92.43 | 91.90 | 92.77 | 85.37 | 73.23 | 63.10 | 62.16 | 74.58 | |||||||||||||
1949 | 44.16 | 59.75 | 68.10 | 69.50 | 83.03 | 89.76 | a | 90.42 | 87.65 | 80.00 | 71.61 | 71.04 | e | 59.26 | 72.86 | |||||||||||
1950 | 65.71 | 67.25 | 72.90 | 79.90 | 86.68 | 92.07 | a | 87.87 | a | 90.53 | a | 83.50 | 80.14 | b | 70.14 | b | 65.13 | 78.48 | ||||||||
1951 | 60.94 | 62.43 | 67.58 | 74.90 | 86.90 | b | 93.43 | b | 96.43 | a | 94.32 | 90.57 | 78.68 | 66.70 | 61.52 | 77.87 | ||||||||||
1952 | 65.61 | 63.59 | 64.87 | 73.80 | 84.90 | 93.80 | 89.81 | 96.00 | 85.03 | 79.32 | 60.10 | 56.35 | k | 77.89 | a | |||||||||||
1953 | 66.23 | 61.54 | 69.45 | 73.13 | 82.52 | 95.40 | 93.45 | 91.61 | 89.17 | 76.10 | a | 66.23 | 54.71 | 76.63 | ||||||||||||
1954 | 62.87 | 68.29 | 67.77 | 80.83 | 81.77 | 91.53 | 93.58 | 89.52 | 88.00 | 76.97 | 68.87 | 61.90 | 77.66 | |||||||||||||
1955 | 54.61 | 60.82 | 70.68 | 78.20 | 83.84 | 90.97 | 89.58 | 89.40 | a | 86.67 | 76.60 | a | 65.14 | a | 63.35 | 75.82 | ||||||||||
1956 | 60.65 | 56.76 | 71.87 | 75.33 | 89.52 | 94.90 | 92.84 | 90.23 | 89.23 | 80.19 | 64.47 | 60.77 | 77.23 | |||||||||||||
1957 | 60.97 | 67.18 | 67.87 | 75.53 | 80.48 | 92.23 | 93.97 | 91.32 | 86.20 | 68.53 | a | ----- | z | 63.26 | 77.05 | a | ||||||||||
1958 | 53.06 | 58.93 | 58.19 | 73.20 | 84.00 | 93.50 | 94.32 | 91.10 | 80.37 | 66.84 | 66.00 | 62.58 | 73.51 | |||||||||||||
1959 | 60.35 | 60.29 | 69.48 | 74.34 | a | 84.71 | 91.96 | b | 89.84 | 91.10 | 89.63 | 78.19 | 63.30 | 58.84 | 76.00 | |||||||||||
1960 | 55.20 | a | 57.04 | a | 68.43 | a | 80.69 | a | 85.61 | 95.14 | a | 88.90 | 88.87 | 86.53 | 76.70 | a | 67.93 | b | 50.45 | 75.12 | ||||||
1961 | 53.65 | 63.64 | 68.94 | 78.80 | 87.39 | 90.83 | a | 90.58 | 89.23 | 84.72 | a | 77.94 | 57.87 | 58.58 | 75.18 | |||||||||||
1962 | 53.94 | 68.19 | a | 63.55 | 77.59 | c | 89.00 | b | 90.30 | 90.55 | 93.55 | 82.97 | 77.06 | 67.87 | 59.39 | 76.16 | ||||||||||
1963 | 56.45 | 65.14 | 69.65 | 78.90 | 85.68 | 91.23 | 94.55 | 90.37 | a | 85.43 | i | 78.80 | a | 67.90 | 57.00 | b | 75.97 | a | ||||||||
1964 | 55.68 | 57.14 | 67.47 | a | 77.03 | 85.16 | 89.77 | 93.03 | 92.52 | 83.77 | 78.40 | a | 65.80 | 61.03 | 75.57 | |||||||||||
1965 | 61.77 | 59.25 | 62.39 | 78.23 | 83.19 | 89.00 | 91.77 | 87.81 | 85.17 | 77.32 | 69.90 | 60.13 | 75.49 | |||||||||||||
1966 | 50.39 | 56.46 | 69.71 | 75.73 | 82.61 | 87.77 | 93.77 | 85.16 | 80.79 | b | 75.18 | c | 69.60 | 58.43 | a | 73.80 | ||||||||||
1967 | 61.45 | 63.96 | 74.97 | 80.10 | 84.03 | 88.10 | 89.97 | 87.03 | 81.13 | 79.68 | 66.79 | b | 54.68 | 75.99 | ||||||||||||
1968 | 56.58 | 58.89 | a | 62.90 | a | 72.83 | a | 82.10 | a | 90.03 | 85.84 | 87.90 | 81.50 | 77.94 | 62.03 | 58.00 | 73.05 | |||||||||
1969 | 61.16 | 59.57 | 56.77 | 76.17 | 82.68 | 88.60 | 93.71 | 92.45 | 81.53 | 69.68 | 60.87 | 58.97 | 73.51 | |||||||||||||
1970 | 55.97 | 57.57 | 59.32 | 73.80 | 82.58 | 87.33 | 87.77 | 90.00 | 81.47 | 68.45 | 66.48 | a | 64.35 | 72.93 | ||||||||||||
1971 | 58.97 | 59.25 | 69.42 | 73.60 | 81.83 | a | 90.30 | 90.60 | a | 81.65 | 80.73 | 72.74 | 65.28 | a | 56.94 | 73.44 | ||||||||||
1972 | 60.50 | a | 62.66 | 72.87 | 80.47 | 80.40 | a | 88.80 | 88.68 | 83.90 | 80.80 | 72.77 | 55.93 | 55.58 | 73.61 | |||||||||||
1973 | 49.06 | 52.00 | 63.03 | 69.10 | 79.55 | 87.13 | 86.81 | 88.42 | 80.17 | 76.16 | 68.13 | 60.58 | 71.68 | |||||||||||||
1974 | 55.19 | 60.64 | 73.77 | 76.17 | 85.90 | 90.17 | 88.13 | 81.71 | 71.77 | 68.42 | 62.07 | a | 52.55 | 72.21 | ||||||||||||
1975 | 56.77 | 58.68 | 64.61 | 71.33 | 79.97 | 90.63 | 82.60 | a | 86.16 | 77.43 | 77.32 | 67.33 | 58.42 | 72.61 | ||||||||||||
1976 | 55.71 | 67.11 | a | 67.03 | 74.59 | c | 76.61 | 88.47 | 82.90 | 87.97 | 77.27 | 67.06 | 56.50 | b | 55.45 | b | 71.39 | |||||||||
1977 | 50.90 | 60.37 | a | 64.20 | a | 72.43 | 82.42 | 91.17 | 91.97 | a | 92.68 | 89.59 | a | 73.47 | a | 66.79 | a | 62.50 | a | 74.87 | ||||||
1978 | 52.26 | 53.41 | a | 66.60 | a | 78.70 | 81.23 | 90.33 | 91.35 | 87.61 | 76.75 | b | 71.23 | 58.41 | a | 52.26 | 71.68 | |||||||||
1979 | 45.65 | 56.11 | 61.97 | 73.52 | a | 78.61 | 83.87 | 89.97 | 84.81 | 82.10 | 80.23 | 59.97 | 56.61 | 71.12 | ||||||||||||
1980 | 58.03 | 58.14 | 65.77 | 71.30 | 80.10 | a | 97.27 | 96.53 | a | 88.00 | a | 81.07 | 70.52 | 59.14 | a | 60.13 | 73.83 | |||||||||
1981 | 52.71 | 61.61 | 61.61 | 74.97 | 81.42 | 92.50 | 90.10 | 83.13 | 80.43 | 73.23 | 69.93 | a | 62.65 | 73.69 | ||||||||||||
1982 | 57.77 | 57.48 | a | 68.94 | 74.03 | a | 78.96 | c | 90.07 | c | 90.90 | b | 89.71 | 85.61 | b | 73.48 | 59.61 | b | 52.34 | b | 73.24 | |||||
1983 | 52.66 | b | 58.07 | a | 65.40 | a | 68.32 | b | 82.48 | b | 88.36 | b | 92.65 | e | 89.79 | b | 86.68 | b | 72.26 | 64.73 | 52.39 | 72.82 | ||||
1984 | 50.50 | c | 61.15 | b | 67.31 | b | 74.69 | a | 83.90 | a | 85.00 | 88.06 | 84.42 | 80.43 | 68.00 | 62.96 | e | 55.77 | e | 71.85 | ||||||
1985 | 48.66 | b | 53.93 | a | 67.06 | 76.14 | a | 82.33 | a | 88.72 | a | 90.52 | b | 92.70 | a | 81.97 | a | 69.87 | a | 66.63 | 58.39 | c | 73.08 | |||
1986 | 60.14 | b | 61.89 | 69.89 | d | 80.48 | c | 82.07 | b | 83.45 | a | 88.55 | 87.68 | c | 81.40 | 69.00 | 59.89 | b | 50.68 | 72.93 | ||||||
1987 | 51.96 | d | 56.77 | b | 61.37 | a | 70.62 | a | 76.97 | a | 84.67 | c | 89.80 | a | 89.19 | 80.55 | a | 77.00 | e | 64.83 | a | 56.87 | 71.72 | |||
1988 | 51.42 | 59.97 | 67.84 | 75.79 | b | 83.03 | a | 88.60 | 88.32 | 86.17 | b | 84.23 | 77.23 | a | 69.24 | a | 54.24 | f | 75.62 | a | ||||||
1989 | 60.15 | e | 57.61 | 71.48 | d | 79.40 | 87.13 | 90.53 | 91.65 | 88.58 | 80.33 | 77.58 | 66.53 | 52.16 | 75.26 | |||||||||||
1990 | 59.13 | 62.89 | 63.10 | b | 73.10 | 82.03 | 98.00 | 87.13 | 84.84 | 81.80 | 75.52 | 68.67 | 59.45 | b | 74.64 | |||||||||||
1991 | 51.74 | 61.59 | a | 67.94 | 74.40 | 84.61 | 91.00 | a | 85.35 | e | 86.03 | 77.57 | i | 75.77 | 59.38 | d | 55.24 | f | 73.78 | b | ||||||
1992 | 52.00 | e | 58.29 | a | 68.10 | 75.83 | a | 78.13 | 85.93 | 90.81 | 88.90 | 87.37 | 79.06 | 59.21 | a | 57.47 | a | 73.42 | ||||||||
1993 | 55.61 | 58.04 | e | 68.71 | c | 75.57 | 83.33 | a | 91.70 | 92.90 | 91.77 | a | 85.12 | d | 73.64 | c | 60.90 | a | 59.45 | 74.73 | ||||||
1994 | 58.19 | 60.75 | 67.03 | 75.40 | 80.62 | b | 97.10 | a | 95.32 | 92.16 | 84.33 | 76.14 | b | 64.93 | 58.81 | 75.90 | ||||||||||
1995 | 55.73 | a | 64.32 | 66.03 | a | 71.37 | 82.77 | a | 88.30 | 92.42 | 90.13 | 80.30 | 78.23 | a | 67.10 | a | 57.48 | 74.52 | ||||||||
1996 | 60.32 | 63.41 | 64.77 | 74.07 | 92.65 | 93.23 | 90.13 | 87.45 | 79.47 | 75.26 | 66.60 | 62.33 | a | 75.81 | ||||||||||||
1997 | 51.90 | 54.00 | a | 70.63 | a | 69.17 | 79.97 | 90.10 | 93.55 | 92.26 | 86.40 | 74.06 | 63.47 | 53.16 | 73.22 | |||||||||||
1998 | 61.97 | 59.43 | 65.32 | 73.03 | 89.71 | 97.70 | 95.12 | f | 89.50 | a | 89.90 | a | 76.84 | 67.00 | a | 57.73 | a | 75.28 | a | |||||||
1999 | 62.77 | 69.04 | a | 68.00 | b | 76.36 | b | 84.10 | a | 88.68 | b | 90.29 | 94.08 | g | 83.75 | b | 77.50 | a | 71.47 | 56.86 | c | 75.35 | a | |||
2000 | 61.93 | a | 67.70 | f | 72.10 | b | 78.34 | a | 91.54 | e | 88.61 | b | 93.79 | b | 92.60 | a | 88.28 | a | 73.30 | a | 58.75 | b | 59.19 | d | 78.04 | a |
2001 | 53.31 | e | 62.04 | c | 62.84 | f | ----- | z | 88.86 | i | 94.61 | b | 95.65 | 91.10 | 86.48 | a | 78.90 | 65.24 | a | 57.34 | b | 76.07 | c | |||
2002 | 60.60 | a | 56.52 | a | 66.73 | a | 79.90 | 87.17 | h | 95.39 | b | 90.97 | a | 91.55 | 85.11 | b | 70.36 | c | 60.17 | 54.43 | a | 73.79 | a | |||
2003 | 59.87 | 58.52 | c | 68.04 | c | 77.37 | c | 84.96 | d | 90.48 | e | 93.65 | h | 92.04 | d | 84.12 | e | 77.58 | g | 66.17 | a | 60.45 | b | 74.20 | b | |
2004 | 56.21 | b | 54.28 | d | 69.18 | c | 71.77 | d | 85.36 | f | 90.75 | f | 85.41 | n | 87.05 | j | 79.58 | k | 71.86 | i | 58.59 | h | 56.32 | f | 62.86 | h |
2005 | 58.54 | e | 55.27 | f | 66.14 | j | 74.40 | t | 78.33 | j | 94.71 | w | 93.90 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 76.22 | j | |
2006 | ----- | z | 66.92 | c | 64.55 | ----- | z | 87.97 | a | 92.07 | c | 91.48 | d | ----- | z | 79.03 | a | 73.13 | 71.28 | a | 56.38 | b | 75.87 | c | ||
2007 | 48.32 | ----- | z | 71.23 | a | 73.27 | 78.13 | ----- | z | 88.97 | 91.87 | ----- | z | ----- | z | 66.83 | a | ----- | z | 74.09 | e | |||||
2008 | ----- | z | ----- | z | 67.10 | 76.57 | 82.60 | a | 94.13 | 86.19 | 87.65 | 78.14 | a | 76.37 | a | 65.97 | 58.19 | j | 79.41 | c | ||||||
2009 | 61.09 | h | 67.22 | a | 70.32 | 75.57 | 84.38 | b | 91.30 | 91.35 | 90.81 | 81.53 | 74.77 | 66.17 | a | 50.58 | 76.73 | a | ||||||||
2010 | 52.07 | b | 54.42 | b | 64.58 | 74.30 | 83.52 | 96.67 | 85.58 | 90.74 | 85.53 | 78.61 | 67.80 | 62.23 | 74.67 | |||||||||||
2011 | 58.32 | 60.89 | 76.87 | 84.73 | 86.97 | 100.63 | c | 95.61 | 95.94 | 85.89 | b | 76.77 | 65.93 | 46.87 | 77.95 | |||||||||||
2012 | 59.39 | 57.83 | 71.84 | 80.97 | 83.32 | 94.70 | 88.73 | a | 96.33 | s | 82.04 | e | 74.82 | n | 68.07 | 63.71 | x | 76.32 | c | |||||||
2013 | 58.00 | w | ----- | z | 64.60 | u | 76.23 | 84.06 | 96.12 | e | 88.03 | 90.35 | 84.94 | l | 73.90 | b | 63.07 | b | 53.78 | d | 78.19 | d | ||||
2014 | 57.00 | b | 60.43 | 65.55 | t | 73.46 | d | 81.03 | 93.77 | 91.42 | e | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 76.19 | f | |||
2015 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2016 | ----- | z | ----- | z | 72.13 | p | 75.77 | d | 84.35 | 93.07 | 97.94 | 86.81 | 79.87 | 78.74 | 65.63 | 57.77 | 79.99 | c | ||||||||
2017 | 56.52 | 67.04 | 75.06 | 79.03 | 82.58 | 93.07 | 90.65 | 84.97 | 83.80 | 76.18 | c | 69.50 | 59.90 | 76.52 | ||||||||||||
2018 | 55.39 | 62.57 | 70.74 | 79.27 | 89.52 | 95.70 | 93.29 | j | 91.16 | 80.90 | 69.23 | 60.23 | 54.00 | l | 75.47 | b | ||||||||||
2019 | 54.77 | 61.44 | a | 62.65 | 76.73 | 80.32 | 89.50 | 92.32 | 95.68 | 87.27 | 71.71 | 63.97 | 58.13 | 74.54 | ||||||||||||
2020 | 56.74 | 57.79 | 65.45 | 75.10 | 88.77 | i | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 63.77 | h | ||||
2021 | ----- | z | ----- | z | ----- | z | ----- | z | 82.97 | 90.07 | o | 85.58 | 86.57 | q | ----- | z | ----- | z | ----- | z | ----- | z | 84.27 | j | ||
2022 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 84.00 | f | 71.10 | 58.63 | 55.94 | 61.89 | i | |||
2023 | 56.77 | 57.18 | 67.87 | 74.67 | 83.10 | ----- | z | 97.58 | 93.42 | 89.10 | 75.71 | 62.23 | 58.77 | 74.22 | a | |||||||||||
2024 | 54.55 | 63.10 | 66.26 | 72.60 | y | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 61.30 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 56.11 | 60.50 | 67.30 | 75.83 | 83.45 | 91.18 | 90.67 | 89.50 | 83.13 | 74.83 | 64.70 | 57.73 | 74.27 | |||||||||||||
S.D. | 4.47 | 3.90 | 3.88 | 3.58 | 3.22 | 3.40 | 3.11 | 3.14 | 3.75 | 3.55 | 3.82 | 3.73 | 1.84 | |||||||||||||
SKEW | -0.09 | 0.24 | -0.15 | 0.42 | 0.43 | 0.05 | -0.08 | -0.30 | -0.13 | -0.45 | -0.24 | -0.48 | 0.24 | |||||||||||||
MAX | 66.23 | 69.04 | 76.87 | 88.27 | 92.65 | 100.63 | 97.94 | 96.00 | 90.57 | 80.90 | 72.36 | 65.13 | 78.48 | |||||||||||||
MIN | 44.16 | 52.00 | 56.77 | 68.32 | 76.61 | 82.63 | 82.60 | 81.65 | 71.77 | 66.84 | 55.93 | 46.87 | 70.67 | |||||||||||||
YRS | 81 | 80 | 82 | 83 | 82 | 81 | 82 | 79 | 77 | 80 | 79 | 76 | 57 |