YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1934 | 59.12 | w | 63.29 | b | 74.31 | 79.70 | b | 85.57 | a | 85.59 | c | 97.37 | 94.34 | c | 87.80 | 78.48 | 64.45 | b | 56.24 | 78.83 | a | |||||
1935 | 54.18 | c | 59.43 | e | 61.15 | 72.05 | 77.02 | 91.83 | a | 94.79 | 92.77 | 88.72 | 74.16 | 58.32 | 54.60 | 73.25 | ||||||||||
1936 | 54.10 | 57.00 | 66.68 | 75.52 | 83.63 | 91.52 | 96.85 | 94.58 | a | 87.38 | 75.88 | a | 63.73 | 54.12 | a | 75.08 | ||||||||||
1937 | 42.53 | b | 55.54 | 62.07 | a | 71.38 | 83.15 | 90.33 | 96.10 | 97.87 | 92.77 | 79.18 | 65.55 | 58.85 | 74.61 | |||||||||||
1938 | 57.03 | 57.13 | a | 61.15 | a | 72.67 | a | 79.97 | 90.18 | 94.95 | 94.19 | 91.42 | 75.15 | 58.08 | 55.32 | 73.94 | ||||||||||
1939 | 53.03 | 50.36 | 64.61 | 75.50 | 82.35 | 89.12 | 95.95 | 96.21 | ----- | z | 72.60 | 65.12 | b | 58.21 | 73.01 | a | ||||||||||
1940 | 56.00 | 57.43 | a | 68.21 | 74.50 | a | 86.50 | b | 93.83 | 96.32 | 96.77 | 86.77 | d | 77.48 | 60.07 | 55.53 | 75.79 | |||||||||
1941 | 54.02 | 60.38 | 63.07 | a | 66.37 | 81.24 | 86.48 | 95.16 | 90.73 | 82.85 | 71.03 | b | 63.20 | 55.23 | 72.48 | |||||||||||
1942 | 54.53 | b | 55.11 | 61.31 | 69.93 | 78.89 | 88.73 | 97.69 | 93.60 | 87.37 | 76.73 | 64.92 | 58.45 | a | 73.94 | |||||||||||
1943 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1944 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1945 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 94.50 | b | 95.00 | 89.17 | 76.74 | 59.25 | 51.21 | 77.64 | f | |||||
1949 | 43.13 | 51.91 | 61.97 | 74.15 | 79.31 | 89.68 | 95.24 | 93.02 | 92.08 | 73.34 | 67.48 | 52.37 | 72.81 | |||||||||||||
1950 | 49.66 | 60.41 | 65.24 | 76.18 | 78.90 | 88.12 | 93.03 | 94.65 | 85.53 | 80.98 | 66.33 | 60.13 | 74.93 | |||||||||||||
1951 | 52.95 | 57.11 | 63.50 | 71.78 | 80.68 | 87.33 | 95.48 | 91.44 | 89.53 | 75.11 | 60.20 | 50.69 | 72.98 | |||||||||||||
1952 | 49.61 | 55.81 | 56.55 | 71.30 | 82.95 | a | 85.97 | 93.23 | 95.74 | 89.98 | 82.76 | 59.12 | 53.11 | 73.01 | ||||||||||||
1953 | 57.59 | b | 56.96 | 64.56 | 70.53 | 72.97 | 87.53 | 96.19 | 93.71 | 90.32 | 76.45 | 64.43 | 52.85 | 73.68 | ||||||||||||
1954 | 53.06 | 64.25 | 60.66 | 76.53 | 82.44 | 87.10 | 96.44 | 91.55 | 89.00 | 77.61 | 65.98 | 53.02 | 74.80 | |||||||||||||
1955 | 49.15 | 52.48 | 63.38 | a | 68.48 | 77.61 | 87.28 | 92.24 | 92.55 | 89.35 | 80.31 | 62.77 | 57.32 | 72.74 | ||||||||||||
1956 | 57.13 | 52.95 | 64.66 | 70.77 | 81.06 | 90.97 | 94.56 | 93.10 | 90.13 | 75.16 | 59.86 | a | 55.19 | 73.80 | ||||||||||||
1957 | 52.97 | a | 63.57 | 66.18 | 71.08 | 76.63 | 92.60 | 95.97 | a | 92.50 | 88.90 | 73.08 | 58.27 | 55.74 | 73.96 | |||||||||||
1958 | 55.40 | 60.38 | 59.60 | 70.93 | 85.71 | b | 90.77 | b | 94.95 | 95.65 | 89.57 | 80.84 | 62.67 | 59.47 | 75.49 | |||||||||||
1959 | 56.19 | 55.54 | 66.66 | 76.73 | d | 79.06 | 93.62 | 98.35 | a | 92.90 | 86.24 | c | 78.13 | 63.13 | 54.74 | 75.11 | ||||||||||
1960 | 49.56 | 54.39 | b | 67.71 | 74.02 | 80.26 | j | 93.93 | 96.81 | 94.65 | a | 89.60 | 75.95 | 62.78 | 53.31 | 73.88 | a | |||||||||
1961 | 55.52 | 60.12 | 63.87 | 73.25 | 79.24 | 92.90 | 95.97 | 93.58 | 84.50 | 75.77 | 60.22 | 52.71 | 73.97 | |||||||||||||
1962 | 53.12 | a | 58.32 | 59.32 | 78.68 | 76.69 | 88.15 | 95.15 | 96.73 | 89.62 | 77.20 | a | 67.90 | 56.97 | 74.82 | |||||||||||
1963 | 50.08 | a | 63.46 | 63.34 | 67.17 | 82.40 | 84.90 | 95.60 | 93.19 | 89.92 | 79.50 | 63.27 | 53.69 | 73.88 | ||||||||||||
1964 | 50.39 | 54.38 | 60.42 | 69.12 | a | 77.71 | 87.31 | a | 95.31 | 93.34 | 87.47 | 82.56 | 59.30 | 55.66 | 72.75 | |||||||||||
1965 | 55.56 | 58.93 | 61.69 | 69.30 | 77.93 | a | 83.70 | 94.50 | 94.71 | 83.90 | 79.77 | 66.07 | 53.21 | 73.27 | ||||||||||||
1966 | 50.73 | 53.66 | 65.52 | 75.50 | 82.45 | 89.82 | 94.97 | 95.31 | 89.50 | 75.48 | a | 65.23 | 55.71 | 74.49 | ||||||||||||
1967 | 54.06 | 60.09 | 66.45 | 64.32 | 79.68 | 85.77 | 96.53 | 96.50 | 87.07 | 79.18 | 68.50 | 50.89 | 74.09 | |||||||||||||
1968 | 54.31 | 63.34 | 66.79 | 70.53 | 80.68 | 90.12 | 94.02 | 90.85 | 88.65 | 76.82 | 64.17 | 50.66 | 74.25 | |||||||||||||
1969 | 57.19 | 55.54 | 62.03 | 73.20 | 83.23 | 87.03 | 95.15 | 98.60 | 90.77 | 72.77 | 64.27 | 56.71 | 74.71 | |||||||||||||
1970 | 53.08 | 61.46 | 62.74 | 66.75 | 82.05 | 90.47 | 97.48 | 96.08 | 86.30 | 73.44 | 64.38 | 52.90 | 73.93 | |||||||||||||
1971 | 53.61 | 58.84 | 64.95 | 69.63 | 75.69 | 87.82 | 96.74 | 92.11 | 88.17 | 71.08 | 60.87 | 51.85 | 72.61 | |||||||||||||
1972 | 52.13 | 60.76 | 73.61 | 73.65 | 80.69 | 90.33 | 97.45 | 92.74 | 87.12 | 71.61 | 58.27 | 50.84 | 74.10 | |||||||||||||
1973 | 50.47 | 56.80 | 57.63 | 69.65 | 82.98 | 91.98 | 95.97 | 92.97 | 86.43 | 76.47 | 61.88 | 56.58 | 73.32 | |||||||||||||
1974 | 51.52 | 57.16 | 66.08 | 71.00 | 81.35 | 93.87 | 94.03 | 93.84 | 90.45 | 77.50 | 63.33 | 52.35 | 74.37 | |||||||||||||
1975 | 52.58 | 55.84 | 60.37 | 63.75 | 78.60 | 88.28 | 95.31 | 94.06 | 89.76 | a | 75.24 | 62.37 | 56.56 | 72.73 | ||||||||||||
1976 | 55.45 | 60.48 | 62.42 | 68.55 | 82.77 | 89.02 | 94.68 | 92.27 | 85.24 | a | 74.89 | 64.25 | 54.00 | 73.67 | ||||||||||||
1977 | 53.06 | 61.30 | 59.21 | 73.17 | 73.87 | 92.15 | 96.60 | 94.10 | 87.83 | a | 79.55 | 65.47 | 59.65 | 74.66 | ||||||||||||
1978 | 53.89 | 57.23 | 65.97 | 68.20 | 78.94 | 92.07 | 96.79 | 93.61 | 86.50 | 80.32 | 60.60 | 48.92 | 73.59 | |||||||||||||
1979 | 47.15 | 54.62 | 61.97 | 72.43 | 79.58 | 90.73 | 95.20 | c | 90.77 | 93.32 | 78.63 | 59.55 | 55.68 | 73.30 | ||||||||||||
1980 | 56.45 | 59.86 | 61.27 | 71.32 | 75.81 | 88.92 | 96.57 | a | 92.87 | 88.32 | 76.52 | 64.87 | 60.07 | a | 74.40 | |||||||||||
1981 | 59.05 | 60.98 | 64.10 | 76.88 | 80.19 | 94.38 | 96.56 | 96.40 | 88.68 | 71.76 | 65.55 | 56.82 | 75.95 | |||||||||||||
1982 | 52.57 | a | 60.18 | 62.81 | 71.40 | 79.77 | 86.52 | a | 93.39 | 93.14 | b | 85.12 | 71.63 | a | 59.57 | 51.56 | 72.30 | |||||||||
1983 | 54.50 | 59.30 | 63.19 | b | 66.72 | 80.53 | 88.33 | 95.53 | 90.82 | 88.38 | 75.92 | a | 62.50 | b | 55.48 | 73.43 | ||||||||||
1984 | 55.63 | 58.21 | 66.26 | 70.70 | 87.08 | 88.98 | 93.21 | 92.18 | 88.80 | 69.84 | 59.78 | a | 50.87 | 73.46 | ||||||||||||
1985 | 51.55 | a | 55.43 | 62.32 | 75.27 | 82.32 | a | 92.52 | 95.79 | 94.63 | a | 80.65 | 74.48 | a | 59.98 | a | 55.08 | 73.34 | ||||||||
1986 | 59.73 | 60.54 | 70.16 | c | 71.38 | 80.81 | 91.98 | a | 90.68 | a | 93.37 | a | 81.28 | a | 72.60 | 62.24 | a | 53.29 | b | 74.00 | ||||||
1987 | 50.93 | c | 59.12 | b | 61.35 | e | 76.35 | g | 81.21 | c | 92.07 | 92.12 | f | 94.02 | b | 87.67 | d | 79.98 | b | 61.75 | d | 49.75 | e | 71.78 | b | |
1988 | 52.18 | f | 59.39 | b | 64.07 | c | 72.02 | f | 80.62 | g | 91.43 | b | 96.35 | a | 92.75 | c | 86.70 | b | 82.54 | d | 63.94 | d | 53.34 | b | 76.72 | c |
1989 | 51.79 | e | 59.32 | i | 68.16 | i | 80.44 | d | 82.48 | d | 90.78 | 97.48 | a | 92.27 | a | 87.85 | c | 75.54 | c | 65.09 | b | 55.28 | d | 77.90 | b | |
1990 | 51.66 | f | 55.89 | i | 66.16 | f | 72.41 | h | 78.23 | g | 92.56 | d | 94.59 | c | 92.48 | c | 88.33 | d | 76.65 | d | 62.98 | b | 49.82 | f | 84.60 | f |
1991 | 52.50 | f | 64.35 | d | 57.96 | e | 69.39 | g | 76.23 | e | 86.41 | c | 94.12 | c | 93.29 | e | 88.33 | c | 78.61 | c | 62.05 | h | 53.50 | e | 76.98 | c |
1992 | 53.00 | e | 60.50 | e | 62.89 | d | 76.20 | e | 83.45 | c | 89.22 | a | 93.41 | d | 93.39 | c | 89.88 | b | 77.39 | d | 59.25 | d | 50.17 | g | 76.23 | a |
1993 | 52.78 | h | 56.04 | d | 65.59 | h | 73.38 | d | 81.98 | b | 89.94 | e | 92.77 | 92.54 | d | 87.74 | e | 75.66 | c | 59.44 | d | 53.59 | d | 76.31 | b | |
1994 | 55.19 | d | 55.05 | f | 67.52 | g | 73.40 | f | 79.28 | d | 94.79 | a | 95.91 | c | 96.71 | 90.16 | a | 73.79 | 56.45 | 53.71 | 77.33 | c | ||||
1995 | 54.16 | 62.90 | c | 63.55 | 69.47 | 75.73 | e | 88.53 | a | 96.24 | d | 96.53 | 90.41 | c | 76.89 | 68.75 | d | 57.39 | c | 75.05 | ||||||
1996 | 56.90 | a | 63.10 | 66.83 | g | 74.61 | c | 83.14 | b | 91.30 | g | 97.27 | e | 96.00 | b | 86.25 | d | 75.52 | 63.33 | f | 56.44 | d | 76.58 | c | ||
1997 | 55.40 | g | 57.41 | f | 70.33 | b | 72.74 | e | 87.55 | c | 87.88 | d | 93.78 | b | 94.70 | d | 88.54 | d | 74.78 | d | 64.22 | c | 51.96 | f | 81.61 | c |
1998 | 55.48 | f | 54.09 | f | 60.58 | m | 66.50 | g | 75.18 | c | 85.28 | c | 96.64 | b | 96.84 | b | 85.98 | c | ----- | z | 62.65 | 53.33 | e | 79.41 | e | |
1999 | ----- | z | ----- | z | 65.09 | c | 65.83 | f | 80.15 | g | 89.44 | c | 93.23 | a | 93.63 | d | 87.40 | d | 79.34 | c | 66.45 | b | 55.20 | c | 78.72 | d |
2000 | 57.80 | f | 60.88 | e | 64.74 | d | 77.04 | f | 85.59 | b | 93.43 | c | ----- | z | 95.70 | d | 89.52 | e | 75.06 | f | 56.79 | d | 57.16 | f | 78.09 | e |
2001 | 53.25 | c | 55.98 | d | 67.12 | e | 69.76 | c | 88.95 | c | 92.30 | c | 94.44 | d | 96.08 | e | 92.50 | e | 78.88 | g | 67.54 | b | 52.92 | 75.53 | a | |
2002 | 53.25 | e | 60.14 | f | 63.38 | f | 75.08 | d | 83.52 | f | ----- | z | 97.96 | d | 94.82 | c | 88.94 | c | 74.63 | d | ----- | z | 54.72 | b | 77.06 | e |
2003 | 60.78 | f | 57.88 | c | 65.85 | d | 68.83 | g | 83.27 | g | 91.08 | 97.57 | a | 95.65 | e | 90.88 | e | 82.96 | c | 60.33 | a | 54.48 | d | 77.41 | c | |
2004 | 54.50 | e | 54.90 | d | 73.93 | d | 74.52 | e | 83.84 | c | 92.03 | a | 96.53 | a | 95.09 | d | 86.48 | e | 74.09 | b | 58.72 | e | 55.07 | c | 74.98 | |
2005 | 56.90 | g | 58.00 | e | 64.27 | 70.58 | f | 82.85 | e | 88.56 | e | 97.62 | b | 93.73 | c | 87.17 | f | 76.29 | c | 64.52 | d | 55.18 | f | 78.23 | d | |
2006 | 55.54 | e | 60.00 | b | 61.58 | e | 69.39 | g | 85.52 | h | 94.73 | d | 98.75 | e | 94.89 | c | 86.44 | d | 73.62 | c | 65.37 | d | 54.77 | g | 76.77 | c |
2007 | 54.17 | p | 60.56 | b | 69.58 | f | 73.54 | f | ----- | z | 91.18 | 95.73 | ----- | z | ----- | z | 73.67 | d | 65.81 | c | 49.98 | b | 72.82 | f | ||
2008 | 50.93 | a | 56.70 | f | 64.66 | b | ----- | z | ----- | z | 91.52 | a | 91.69 | e | 89.60 | e | 84.76 | g | 73.45 | 66.12 | e | 51.29 | 72.41 | d | ||
2009 | 55.26 | 56.33 | a | 63.98 | 69.40 | 86.18 | 85.27 | 96.42 | 93.35 | 89.78 | 71.18 | 64.73 | 51.77 | 73.64 | ||||||||||||
2010 | 55.21 | 58.39 | a | 62.35 | 69.12 | 76.77 | 90.18 | 97.60 | 94.61 | 90.80 | 76.06 | 63.22 | 57.55 | 74.32 | ||||||||||||
2011 | 54.27 | 55.05 | 65.53 | 72.35 | 77.21 | 89.72 | 95.35 | 98.35 | 90.65 | 77.69 | 62.19 | a | 50.75 | e | 74.09 | |||||||||||
2012 | 56.89 | 59.84 | 65.23 | 74.08 | 84.39 | 92.42 | 93.90 | 94.48 | 87.78 | 74.48 | 62.26 | e | 51.98 | c | 74.81 | |||||||||||
2013 | 47.39 | c | 52.45 | 64.48 | e | 71.48 | 79.95 | 91.28 | j | 93.15 | 91.40 | b | 83.47 | 69.87 | a | 60.65 | 50.81 | 69.55 | a | |||||||
2014 | 56.11 | 62.07 | 65.34 | b | 71.40 | a | 79.21 | 89.02 | g | 93.61 | 88.26 | 87.05 | 76.65 | 63.67 | j | 53.65 | 73.33 | b | ||||||||
2015 | 54.23 | 62.59 | 68.23 | 69.71 | a | 74.66 | 91.48 | 90.31 | j | 95.94 | 90.93 | 80.97 | a | 64.71 | f | 53.57 | a | 74.23 | b | |||||||
2016 | 54.21 | 64.12 | 69.88 | b | 72.61 | p | 78.94 | 92.11 | k | 96.98 | 94.22 | a | 87.10 | f | 80.08 | a | 68.35 | c | 59.29 | n | 75.85 | d | ||||
2017 | 53.92 | 63.50 | d | 69.79 | b | 71.29 | m | 78.63 | h | 93.41 | c | 97.55 | 95.78 | f | 87.70 | e | 78.18 | 69.38 | 59.77 | k | 76.68 | d | ||||
2018 | 60.03 | a | 59.59 | 63.20 | d | 76.63 | c | 80.66 | f | 91.08 | 95.81 | e | 99.78 | v | 92.04 | d | 75.34 | b | 64.65 | c | 55.81 | o | 75.38 | c | ||
2019 | 54.08 | 52.29 | b | 63.14 | c | 74.73 | f | 74.30 | a | 89.48 | b | 95.62 | b | 96.67 | d | 87.08 | 73.58 | a | 69.20 | j | 54.59 | n | 76.25 | c | ||
2020 | 55.05 | b | 58.48 | 62.02 | 72.45 | 85.15 | 90.08 | 96.82 | a | 99.29 | 91.37 | 80.40 | 64.82 | 54.50 | 75.87 | |||||||||||
2021 | 54.26 | 61.41 | q | 61.41 | d | 75.95 | 82.53 | 95.08 | 96.82 | 95.19 | 90.10 | 73.37 | 69.20 | 56.89 | 77.35 | a | ||||||||||
2022 | 55.27 | 59.11 | 67.28 | a | 74.43 | 82.53 | 92.95 | 96.66 | 93.44 | 91.47 | 77.94 | 58.95 | 54.34 | 75.36 | ||||||||||||
2023 | 53.15 | 54.30 | 59.90 | 72.63 | 81.55 | 85.37 | 99.60 | 95.39 | 87.22 | 76.84 | 64.15 | 57.21 | 73.94 | |||||||||||||
2024 | 53.29 | 57.79 | c | 63.58 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 58.22 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 53.52 | 58.39 | 64.16 | 72.17 | 80.68 | 90.00 | 95.60 | 94.12 | 88.32 | 76.29 | 63.02 | 54.37 | 74.03 | |||||||||||||
S.D. | 3.13 | 3.33 | 3.47 | 3.39 | 3.45 | 2.69 | 1.66 | 2.02 | 2.44 | 3.09 | 3.10 | 2.60 | 0.91 | |||||||||||||
SKEW | -1.03 | -0.18 | 0.70 | -0.01 | -0.01 | -0.20 | -0.41 | -0.02 | -0.66 | 0.11 | -0.03 | 0.20 | 0.16 | |||||||||||||
MAX | 60.03 | 64.35 | 74.31 | 80.44 | 88.95 | 95.08 | 99.60 | 99.29 | 93.32 | 82.96 | 69.38 | 60.13 | 75.95 | |||||||||||||
MIN | 42.53 | 50.36 | 56.55 | 63.75 | 72.97 | 83.70 | 90.68 | 88.26 | 80.65 | 69.84 | 56.45 | 48.92 | 72.30 | |||||||||||||
YRS | 73 | 76 | 77 | 68 | 73 | 79 | 82 | 82 | 80 | 82 | 79 | 75 | 53 |