YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1928 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1929 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1936 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1937 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1938 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1939 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1940 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1941 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1942 | ----- | z | ----- | z | ----- | z | ----- | z | 81.96 | d | 89.33 | 89.81 | 86.97 | 80.09 | g | 71.18 | c | 70.23 | 60.10 | 78.51 | e | |||||
1943 | 56.06 | 62.18 | 65.97 | 80.47 | 79.74 | 89.63 | 89.61 | 97.06 | 86.17 | 74.81 | 61.52 | a | ----- | z | 76.66 | a | ||||||||||
1944 | 52.61 | 56.17 | 59.17 | b | 69.37 | 82.20 | a | 90.67 | 91.06 | 92.61 | 81.80 | 77.06 | 63.20 | 49.16 | 72.09 | |||||||||||
1945 | 53.06 | 58.57 | 68.10 | 69.40 | 88.23 | 92.40 | 92.26 | 91.55 | ----- | z | ----- | z | ----- | z | ----- | z | 76.70 | d | ||||||||
1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1947 | ----- | z | ----- | z | 58.11 | d | 70.47 | ----- | z | ----- | z | 92.23 | r | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 64.29 | j | |
1948 | 52.39 | h | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 98.38 | q | 96.73 | a | 96.52 | 90.50 | j | ----- | z | ----- | z | ----- | z | 96.62 | j | |
1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 53.17 | l | 56.42 | l | ----- | z |
1953 | 61.26 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 61.26 | k | |
1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1963 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1964 | 56.00 | 48.93 | 66.53 | a | 76.30 | 84.06 | 89.73 | 93.80 | a | 89.80 | a | 79.93 | a | 76.94 | 62.13 | 56.23 | 73.37 | |||||||||
1965 | 60.48 | 56.75 | 55.10 | 75.37 | 81.29 | 85.72 | a | 91.84 | 87.57 | a | 83.30 | 74.48 | 68.93 | 57.06 | 73.16 | |||||||||||
1966 | 44.23 | 51.25 | 67.35 | 70.27 | 79.13 | 85.70 | 93.90 | 83.03 | 79.57 | 71.68 | 67.13 | 53.16 | 70.53 | |||||||||||||
1967 | 56.37 | a | 56.61 | 70.77 | 77.53 | 80.61 | 85.90 | 86.48 | 86.13 | 79.37 | 76.97 | 62.57 | 49.61 | 72.41 | ||||||||||||
1968 | 51.81 | 52.41 | 61.26 | 69.50 | 78.23 | 88.57 | 87.10 | 87.00 | 81.83 | 76.68 | 58.30 | 55.19 | 70.66 | |||||||||||||
1969 | 57.84 | 54.37 | a | 51.94 | 73.47 | 80.00 | 86.97 | 94.71 | 91.29 | 78.80 | 65.68 | 63.04 | e | 56.13 | 71.19 | |||||||||||
1970 | 49.84 | 59.54 | 58.54 | c | 72.41 | c | 84.14 | b | 88.53 | 92.13 | 91.81 | 82.03 | 70.71 | 63.53 | 61.61 | 72.90 | ||||||||||
1971 | 55.71 | 53.44 | a | 66.52 | 72.53 | 81.57 | a | 90.67 | 91.32 | 82.68 | 81.53 | 72.97 | 63.64 | b | 52.48 | 72.09 | ||||||||||
1972 | 56.93 | c | 62.69 | 73.77 | 79.60 | 78.87 | 89.03 | 88.32 | 85.52 | 83.18 | b | 74.71 | 47.50 | f | ----- | z | 77.26 | b | ||||||||
1973 | 45.48 | 54.79 | 63.89 | c | 65.37 | ----- | z | 90.60 | 92.32 | 92.19 | ----- | z | ----- | z | ----- | z | ----- | z | 72.09 | e | ||||||
1974 | ----- | z | 60.57 | e | 70.79 | g | 75.00 | a | 85.07 | b | 89.45 | a | 90.94 | 82.90 | 71.03 | a | 69.68 | 59.59 | a | 50.16 | 73.44 | b | ||||
1975 | 51.50 | a | 49.50 | 61.42 | 70.62 | a | 79.50 | a | 89.32 | b | 83.97 | 86.90 | 77.70 | 76.50 | a | ----- | z | 57.44 | d | 71.31 | a | |||||
1976 | 54.90 | 65.85 | b | 65.45 | b | 74.62 | d | 76.65 | ----- | z | 82.07 | a | 88.38 | b | 79.17 | a | 65.38 | e | 54.62 | a | 55.64 | c | 69.34 | a | ||
1977 | 46.66 | b | 59.42 | b | 64.97 | b | 69.79 | b | 80.54 | c | 91.89 | b | 89.81 | 88.45 | 88.97 | 76.23 | a | 65.63 | 58.29 | 73.39 | ||||||
1978 | 43.93 | a | 41.41 | a | 65.27 | a | 81.54 | b | 81.87 | 90.37 | 94.13 | 86.55 | 80.27 | 74.33 | a | 56.37 | 49.67 | a | 70.47 | |||||||
1979 | 40.10 | 54.21 | 62.23 | a | 72.47 | 78.19 | 85.87 | 90.48 | 84.35 | 83.60 | 79.20 | a | 57.07 | a | 52.54 | c | 70.03 | |||||||||
1980 | 51.45 | 56.03 | 63.58 | ----- | z | 78.97 | a | 94.93 | 94.48 | 88.94 | 82.67 | 72.65 | 59.26 | c | 57.37 | a | 72.76 | a | ||||||||
1981 | 54.52 | d | 59.89 | ----- | z | 75.59 | a | 80.45 | 90.69 | a | 89.48 | 84.57 | q | 80.57 | 69.71 | 65.23 | 56.52 | 72.26 | b | |||||||
1982 | 52.97 | 52.14 | 64.58 | 69.86 | a | 79.07 | a | 82.40 | 90.39 | 90.16 | 85.87 | 72.83 | b | 58.89 | b | 47.71 | 70.57 | |||||||||
1983 | 44.03 | a | 50.88 | c | 61.59 | b | 66.10 | a | 78.69 | b | 83.69 | a | 92.11 | d | 92.96 | g | 87.22 | c | 72.82 | c | 62.14 | a | 41.70 | a | 67.36 | a |
1984 | 50.03 | b | 59.59 | b | 60.11 | l | 69.21 | a | 83.07 | b | 86.90 | a | 89.27 | a | 89.26 | h | 79.74 | c | 69.68 | f | 58.64 | b | 53.29 | c | 69.97 | c |
1985 | 46.96 | f | 49.79 | d | 64.36 | c | 76.00 | d | 83.00 | i | 84.59 | h | 89.88 | e | 89.19 | j | 80.41 | h | 69.71 | g | 59.50 | n | 47.92 | s | 70.01 | h |
1986 | ----- | z | ----- | z | ----- | z | 75.93 | b | 79.69 | b | 83.31 | a | 92.03 | 86.16 | 79.13 | 66.13 | 56.27 | 48.35 | 74.11 | c | ||||||
1987 | 48.32 | 52.75 | 58.39 | 71.60 | 77.87 | 86.23 | 90.17 | a | 86.81 | 78.96 | b | 73.45 | 61.53 | 48.00 | 69.51 | |||||||||||
1988 | 44.81 | 55.76 | 62.87 | 70.47 | 79.03 | 86.50 | 86.47 | a | 88.63 | a | 81.00 | 73.23 | 64.76 | a | 52.58 | 70.51 | ||||||||||
1989 | 58.13 | 48.21 | 68.87 | 76.37 | 83.71 | 81.13 | 90.10 | a | 86.90 | 79.17 | 76.52 | 67.03 | 47.58 | 71.98 | ||||||||||||
1990 | 55.17 | a | 59.00 | 59.29 | 70.40 | 79.45 | 96.70 | 87.74 | 87.16 | 82.57 | 72.97 | 64.62 | a | 51.45 | 72.21 | |||||||||||
1991 | 44.48 | 60.79 | 65.29 | 76.00 | a | 84.77 | 88.57 | 88.26 | 87.54 | e | 76.34 | a | 76.13 | 55.07 | 50.27 | a | 71.13 | |||||||||
1992 | 47.19 | 59.24 | 67.16 | 72.40 | 77.21 | c | 82.77 | 88.87 | 86.11 | c | 82.63 | 77.97 | 58.63 | c | 50.94 | 70.93 | ||||||||||
1993 | 46.97 | 54.00 | 64.19 | 73.50 | 80.10 | 89.21 | k | 90.23 | 89.61 | 83.63 | 71.90 | 57.60 | 58.73 | i | 71.17 | b | ||||||||||
1994 | 53.90 | a | 56.96 | 65.97 | 73.20 | 77.35 | 94.50 | f | 91.90 | 89.00 | 85.70 | 73.68 | 62.50 | 57.92 | e | 71.64 | a | |||||||||
1995 | 53.65 | 61.57 | 63.13 | 71.63 | 77.07 | a | 87.27 | 92.73 | i | 89.74 | 79.50 | 76.39 | 66.07 | 56.32 | f | 72.60 | b | |||||||||
1996 | 55.84 | 61.41 | 62.90 | 74.83 | 89.29 | 88.44 | e | 89.45 | 86.55 | 80.04 | c | 74.23 | 63.20 | 57.91 | h | 75.11 | a | |||||||||
1997 | 47.87 | a | 50.64 | 68.97 | 64.80 | 77.48 | 84.97 | 92.70 | d | 88.72 | b | 85.52 | a | 72.90 | 61.63 | c | 47.81 | 70.33 | ||||||||
1998 | 57.06 | 55.54 | 59.97 | a | 71.14 | b | 87.93 | b | 94.93 | 95.16 | 87.26 | 88.53 | 74.61 | 63.53 | 52.38 | e | 74.00 | |||||||||
1999 | 57.10 | 63.61 | 60.26 | 70.48 | g | 76.39 | 86.04 | b | 89.58 | 91.00 | 79.20 | 74.42 | 70.60 | 52.26 | 72.77 | a | ||||||||||
2000 | 58.06 | 66.10 | 66.97 | 73.25 | b | 86.00 | c | 86.00 | g | 92.48 | f | 91.42 | 87.73 | 71.48 | 53.44 | e | 47.26 | 70.17 | b | |||||||
2001 | 44.97 | 56.63 | a | 55.83 | b | 77.10 | a | 80.52 | 89.88 | e | 94.55 | 88.65 | 83.18 | b | 75.10 | 62.96 | d | 55.16 | 72.04 | |||||||
2002 | 54.35 | 54.75 | 62.58 | 73.11 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 61.20 | h | |||
2003 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2004 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 89.10 | 88.26 | 82.37 | 72.61 | 54.40 | 55.58 | 73.72 | f | ||||||
2005 | 55.71 | 56.57 | 62.97 | 73.23 | 78.35 | 90.57 | 90.26 | 86.94 | 87.57 | b | 73.10 | 68.47 | 55.10 | b | 73.24 | |||||||||||
2006 | 62.29 | 60.46 | 66.33 | g | 79.03 | 86.00 | a | 92.04 | b | 93.43 | c | 88.06 | 77.33 | 70.22 | d | 63.93 | b | 51.06 | 74.90 | a | ||||||
2007 | 41.26 | d | 55.82 | 65.58 | 66.67 | f | 74.77 | e | 83.90 | 86.86 | b | 88.71 | j | 82.06 | l | 78.36 | f | 67.32 | k | 52.89 | m | 68.03 | f | |||
2008 | 52.52 | j | 61.74 | j | 66.70 | k | 72.21 | f | 81.25 | k | 92.00 | h | 86.00 | i | 86.73 | i | 78.17 | g | 70.91 | i | 68.06 | l | 54.70 | k | ----- | z |
2009 | 54.24 | n | 65.12 | k | 68.25 | g | 74.22 | g | 79.52 | 87.97 | 90.00 | a | 90.06 | 80.27 | 69.26 | 66.67 | 45.87 | 76.20 | d | |||||||
2010 | 52.26 | 46.07 | 61.55 | 71.60 | 78.35 | 91.30 | 85.13 | 90.06 | 86.33 | 75.68 | 63.60 | 57.55 | 71.62 | |||||||||||||
2011 | 53.61 | 53.86 | 69.77 | 79.30 | 82.94 | 96.83 | 95.13 | 96.58 | 84.23 | 74.42 | 62.63 | 43.97 | 74.44 | |||||||||||||
2012 | 58.84 | 54.31 | 71.16 | 79.57 | 83.35 | 90.83 | 91.39 | 90.97 | 82.73 | 72.19 | 68.43 | 55.90 | 74.97 | |||||||||||||
2013 | 51.03 | 54.07 | 65.26 | 71.90 | 81.90 | 89.97 | 86.61 | 88.65 | 84.77 | 73.32 | 57.90 | 50.26 | 71.30 | |||||||||||||
2014 | 53.55 | 53.89 | 63.87 | 73.43 | 80.29 | 87.00 | 86.42 | 88.06 | 77.57 | 75.68 | 57.43 | 52.26 | 70.79 | |||||||||||||
2015 | 47.29 | 56.18 | 62.23 | 72.83 | 73.58 | 85.43 | 88.97 | 89.16 | 86.63 | 72.39 | 62.10 | 55.03 | 70.99 | |||||||||||||
2016 | 51.65 | 61.83 | 69.32 | 72.10 | 76.77 | 87.87 | 94.68 | 86.61 | 80.43 | 78.13 | 66.03 | 51.87 | 73.11 | |||||||||||||
2017 | 52.42 | 64.21 | 71.39 | 73.30 | 80.77 | 90.97 | 91.55 | 83.94 | 81.90 | 73.42 | 67.93 | 55.29 | 73.92 | |||||||||||||
2018 | 53.74 | 59.00 | 68.90 | 72.47 | 89.19 | 94.07 | 92.94 | 90.16 | 82.07 | 68.00 | 57.30 | 52.10 | 73.33 | |||||||||||||
2019 | 54.03 | 58.46 | 60.35 | 73.73 | 76.35 | 86.57 | 92.13 | 95.23 | 86.73 | 67.84 | 58.33 | 57.06 | 72.24 | |||||||||||||
2020 | 56.32 | 52.79 | 65.94 | 72.70 | 85.32 | 91.40 | 96.29 | 94.81 | 81.87 | 73.58 | 67.47 | 55.42 | 74.49 | |||||||||||||
2021 | 50.32 | 48.25 | 65.87 | 70.00 | 78.19 | 88.87 | 87.52 | 88.42 | 88.40 | 78.06 | 67.07 | 65.16 | 73.01 | |||||||||||||
2022 | 52.81 | 52.89 | 66.19 | 76.87 | 87.55 | 91.57 | 97.19 | 89.10 | 85.47 | 70.26 | 57.30 | 52.84 | 73.34 | |||||||||||||
2023 | 56.16 | 57.21 | 65.81 | 72.13 | 79.68 | 87.87 | 93.16 | 94.61 | 88.03 | 74.35 | 63.37 | 56.84 | 74.10 | |||||||||||||
2024 | 48.42 | 60.93 | 65.23 | 73.57 | 78.67 | s | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 62.04 | h | ||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 52.20 | 56.12 | 64.19 | 73.21 | 80.84 | 88.74 | 90.74 | 88.94 | 82.35 | 73.34 | 62.21 | 53.12 | 72.17 | |||||||||||||
S.D. | 5.09 | 4.95 | 4.24 | 3.54 | 3.60 | 3.43 | 3.14 | 3.28 | 3.61 | 3.14 | 4.36 | 4.46 | 1.44 | |||||||||||||
SKEW | -0.39 | -0.33 | -0.39 | 0.13 | 0.61 | 0.15 | -0.24 | 0.58 | -0.22 | -0.61 | -0.09 | -0.05 | 0.09 | |||||||||||||
MAX | 62.29 | 66.10 | 73.77 | 81.54 | 89.29 | 96.83 | 97.19 | 97.06 | 88.97 | 79.20 | 70.60 | 65.16 | 74.97 | |||||||||||||
MIN | 40.10 | 41.41 | 51.94 | 64.80 | 73.58 | 81.13 | 82.07 | 82.68 | 71.03 | 65.38 | 53.44 | 41.70 | 69.51 | |||||||||||||
YRS | 58 | 59 | 56 | 58 | 58 | 55 | 60 | 57 | 56 | 56 | 55 | 52 | 37 |