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 | 69.39 | 82.05 | 80.34 | 80.21 | 74.59 | b | 64.05 | 45.47 | a | 43.23 | a | 67.42 | d | |||||
1930 | 35.06 | 50.94 | a | 48.60 | a | 66.25 | 65.68 | a | 77.43 | a | 83.13 | 81.03 | 78.68 | 66.16 | 52.00 | 42.05 | 62.25 | |||||||||
1931 | 45.06 | 50.26 | a | 54.65 | a | ----- | z | ----- | z | 78.38 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 57.09 | h | ||
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | ----- | 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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | 83.16 | 84.47 | 76.82 | 69.31 | 55.87 | 45.16 | 69.13 | f | ||||||
1963 | 38.28 | a | 47.64 | 58.15 | 71.02 | a | 75.92 | 81.17 | 85.29 | 83.85 | 77.10 | 69.71 | 54.77 | 40.19 | 65.26 | |||||||||||
1964 | 40.69 | 41.76 | 54.79 | 67.00 | 75.66 | 81.22 | 84.97 | 85.42 | 74.55 | 64.35 | 55.78 | 45.82 | 64.33 | |||||||||||||
1965 | 47.48 | g | 43.71 | g | 49.42 | 68.50 | 73.95 | k | 80.07 | a | 83.42 | 80.23 | 75.85 | 64.89 | i | 58.00 | a | 49.66 | 68.14 | d | ||||||
1966 | 40.00 | a | 42.12 | b | 58.42 | 64.30 | 72.21 | 79.47 | 86.08 | 78.90 | 75.35 | 61.76 | 58.02 | 41.13 | a | 63.15 | ||||||||||
1967 | 43.85 | 49.64 | 62.62 | a | 71.28 | l | 72.40 | e | 81.82 | 81.47 | 79.18 | a | 71.35 | 65.19 | 54.70 | 42.88 | c | 64.10 | a | |||||||
1968 | 45.02 | b | 45.89 | b | 53.17 | k | ----- | z | ----- | z | 80.38 | 78.73 | 80.17 | j | 71.63 | 65.57 | a | 51.28 | 41.12 | a | 59.95 | d | ||||
1969 | 47.10 | f | 47.02 | d | 50.03 | l | 65.37 | 72.71 | 81.57 | 86.71 | 85.81 | 77.08 | 64.23 | 50.83 | c | 48.59 | b | 67.99 | b | |||||||
1970 | 43.18 | 49.50 | 50.78 | b | 64.75 | 71.52 | 78.71 | a | 83.16 | 82.97 | 74.48 | 60.34 | 52.00 | 52.72 | d | 63.67 | ||||||||||
1971 | 47.66 | 48.81 | a | 56.94 | 63.60 | 72.73 | 80.27 | 82.98 | c | 75.62 | f | 74.02 | 65.00 | b | 56.03 | 50.05 | 63.46 | a | ||||||||
1972 | 47.60 | a | 49.46 | b | 61.98 | 70.12 | d | 72.35 | 80.22 | a | 81.84 | b | ----- | z | 76.80 | 65.29 | 48.63 | 43.46 | e | 63.43 | a | |||||
1973 | 40.21 | b | 45.11 | a | 57.10 | 60.08 | 72.20 | a | 79.86 | a | 81.15 | 81.65 | 74.33 | a | 66.90 | 57.31 | a | 47.38 | g | 65.08 | a | |||||
1974 | 45.69 | 51.84 | 66.74 | 68.05 | 79.60 | 82.22 | 83.95 | b | 80.27 | a | 68.98 | 65.90 | 55.35 | 47.40 | 66.33 | |||||||||||
1975 | 47.55 | 50.62 | 57.05 | 65.37 | 73.84 | 82.09 | a | 79.11 | 80.20 | a | 72.28 | a | 67.44 | 56.96 | b | 48.27 | 65.06 | |||||||||
1976 | 46.40 | f | 57.59 | 59.53 | a | 68.25 | 70.24 | 81.37 | 77.95 | 80.23 | a | 72.90 | 60.87 | a | 49.20 | 45.68 | a | 65.80 | a | |||||||
1977 | 44.00 | 52.66 | 58.58 | 66.48 | 77.27 | 82.70 | 85.40 | 86.50 | 83.42 | 69.08 | a | 57.98 | 52.81 | 68.07 | ||||||||||||
1978 | 42.44 | 45.88 | 60.97 | a | 72.40 | 77.61 | 81.68 | 86.05 | a | 81.65 | e | 74.33 | 66.22 | a | 57.12 | 47.45 | 66.15 | |||||||||
1979 | 41.50 | 48.71 | 58.37 | 68.17 | 74.07 | b | 79.23 | 83.77 | 81.53 | a | 75.62 | 70.76 | 53.53 | 48.84 | 65.34 | |||||||||||
1980 | 49.35 | a | 51.60 | 58.98 | 65.55 | 74.45 | 86.91 | a | 87.95 | 83.76 | 78.02 | a | 64.40 | 52.32 | 50.24 | 66.96 | ||||||||||
1981 | 47.56 | 52.86 | 56.94 | 68.30 | 71.67 | m | 79.55 | 83.82 | 80.74 | 78.28 | 67.74 | 59.78 | 54.17 | h | 67.56 | b | ||||||||||
1982 | 49.88 | b | 50.87 | a | 63.48 | a | 68.35 | 73.73 | a | 82.57 | 85.71 | 85.12 | b | 80.03 | 68.50 | 55.55 | b | 46.69 | 67.54 | |||||||
1983 | 47.29 | 52.67 | a | 60.08 | a | 64.57 | a | 75.83 | a | 81.33 | a | 85.55 | a | 84.77 | 79.83 | 71.07 | a | 60.27 | b | 42.53 | b | 67.15 | ||||
1984 | 43.52 | 52.18 | a | 59.87 | d | 66.59 | a | 77.31 | 82.68 | 83.35 | 83.87 | a | 74.75 | 65.18 | 54.87 | 52.00 | 66.35 | |||||||||
1985 | 42.68 | a | 49.32 | 60.84 | 69.57 | 77.63 | 79.88 | 81.92 | 84.90 | a | 76.81 | a | 67.24 | 59.53 | 45.71 | 66.34 | ||||||||||
1986 | 49.23 | 55.54 | 62.65 | 72.27 | 75.42 | 79.34 | a | 83.55 | 81.31 | 77.35 | 64.73 | 54.75 | 45.44 | 66.80 | ||||||||||||
1987 | 46.48 | a | 50.52 | 53.00 | 62.57 | 71.15 | a | 77.68 | 81.58 | a | 81.94 | 74.77 | 68.82 | 54.15 | 47.61 | 64.19 | ||||||||||
1988 | 43.47 | 51.09 | 56.92 | a | 66.33 | 71.76 | 80.67 | 80.97 | 81.02 | 75.60 | a | 67.56 | 58.65 | 47.03 | 65.09 | |||||||||||
1989 | 50.13 | 46.41 | a | 60.17 | a | 69.13 | 79.60 | a | 81.24 | a | 84.02 | 81.61 | 74.30 | 69.53 | a | 56.97 | 42.28 | a | 66.28 | |||||||
1990 | 49.36 | c | 55.35 | a | 57.98 | 67.84 | a | 74.68 | a | 86.22 | 79.32 | 79.02 | a | 75.62 | a | 66.19 | b | 57.22 | a | 47.10 | 66.33 | |||||
1991 | 44.58 | a | 53.65 | a | 60.74 | b | 67.38 | a | 77.45 | 81.87 | 81.32 | 79.75 | a | 71.36 | e | 66.47 | a | 52.36 | h | 49.18 | f | 68.46 | b | |||
1992 | 45.08 | a | 53.50 | b | 60.23 | a | 68.37 | c | 72.25 | y | 79.98 | 82.26 | 79.55 | a | 76.92 | 68.27 | 52.70 | g | 48.56 | o | 68.24 | c | ||||
1993 | 46.96 | f | 53.25 | f | 58.89 | d | 68.05 | b | 73.54 | e | 81.24 | c | 84.90 | 84.18 | 75.00 | b | 66.29 | c | 52.83 | f | 51.33 | d | 71.49 | c | ||
1994 | 49.26 | d | 51.34 | c | 62.22 | d | 68.48 | f | 75.41 | d | 86.85 | 85.88 | c | 83.93 | a | 75.77 | b | 69.07 | d | 59.02 | f | 52.34 | b | 69.21 | b | |
1995 | 48.46 | e | 55.83 | j | 58.54 | e | 68.17 | c | 75.02 | b | 80.39 | b | 85.21 | 83.63 | 76.58 | 70.62 | f | 59.59 | b | 48.92 | 68.45 | b | ||||
1996 | 48.50 | a | 55.79 | c | 55.88 | g | 68.96 | e | 83.09 | b | 84.45 | a | 86.00 | b | 81.62 | c | 73.81 | a | 67.10 | a | 59.23 | f | 50.67 | b | 70.00 | b |
1997 | 48.17 | h | 48.56 | a | 60.82 | 62.16 | a | 73.46 | c | 79.38 | a | 84.50 | 84.00 | a | 78.42 | 67.25 | a | 54.06 | d | 45.33 | d | 67.08 | a | |||
1998 | 51.89 | 52.24 | a | 56.50 | g | 65.77 | 82.00 | a | 87.32 | 88.02 | 82.60 | 80.62 | 70.96 | c | 59.06 | c | 47.79 | e | 69.84 | a | ||||||
1999 | 52.61 | c | 59.17 | e | 60.34 | b | 69.95 | a | 76.58 | a | 81.22 | 83.68 | a | 85.76 | 78.29 | b | 67.71 | 60.59 | c | 49.60 | e | 68.79 | ||||
2000 | 52.60 | a | 58.93 | f | ----- | z | 68.41 | a | 80.69 | d | 79.59 | c | 86.13 | a | 84.07 | a | 79.04 | b | 65.86 | f | 49.40 | e | 43.03 | b | 69.22 | c |
2001 | 42.95 | b | 51.83 | a | 53.11 | c | 67.40 | e | 77.00 | d | 84.60 | a | 86.05 | a | 82.93 | c | 75.42 | e | 67.67 | b | 58.04 | c | 45.90 | b | 66.07 | |
2002 | 47.85 | d | 46.04 | c | 55.22 | f | 70.05 | a | 75.16 | c | 82.36 | e | 81.66 | c | 84.67 | g | 75.02 | f | 63.09 | b | 50.00 | c | 46.72 | b | 62.55 | c |
2003 | 45.33 | a | 48.14 | 58.13 | d | 67.10 | f | 75.40 | a | 79.46 | f | 81.24 | d | 82.42 | f | 75.10 | e | 66.67 | d | 52.62 | f | 46.96 | g | 64.29 | e | |
2004 | 48.24 | n | 46.33 | f | 60.50 | e | 66.02 | f | 71.00 | b | 80.26 | g | 79.24 | b | ----- | z | 73.19 | d | ----- | z | ----- | z | 44.80 | c | 65.75 | g |
2005 | 49.90 | e | 48.89 | 55.16 | 65.52 | 73.22 | h | 80.23 | 82.15 | 78.87 | 79.25 | 65.50 | 56.00 | ----- | z | 66.15 | b | |||||||||
2006 | 51.12 | b | 50.45 | 60.92 | a | 72.03 | 78.54 | d | 81.96 | q | 83.18 | t | 81.30 | d | 72.23 | f | 65.24 | j | ----- | z | ----- | z | 65.73 | f | ||
2007 | ----- | z | ----- | z | ----- | z | ----- | z | 77.00 | y | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2008 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 84.10 | p | 80.63 | a | 72.37 | 66.18 | 55.12 | a | 47.81 | 64.42 | g | |||
2009 | 47.06 | 54.74 | a | 59.98 | 66.90 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 57.17 | h | |||
2010 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 66.81 | n | 65.91 | b | 55.78 | 48.50 | a | 56.73 | i | |
2011 | 43.95 | 47.02 | 64.13 | 72.19 | c | 76.26 | 88.63 | 87.76 | 88.19 | b | 78.95 | 67.84 | 55.85 | 42.90 | 67.81 | |||||||||||
2012 | 47.71 | 50.29 | c | ----- | z | 77.45 | s | 76.23 | a | 85.73 | 82.71 | l | 83.81 | m | 77.97 | 69.34 | o | ----- | z | ----- | z | 67.59 | g | |||
2013 | 43.94 | 48.98 | 59.08 | 65.88 | 74.56 | 83.79 | d | 80.79 | 84.67 | a | 76.80 | 66.19 | 50.57 | 43.18 | 64.87 | |||||||||||
2014 | 44.13 | 48.73 | 55.00 | 65.36 | b | 73.60 | 82.65 | 83.05 | 83.02 | 74.42 | 68.79 | 49.32 | 48.62 | a | 64.72 | |||||||||||
2015 | 41.44 | 47.20 | 54.10 | 66.13 | 72.39 | 79.70 | 84.84 | 84.98 | 79.24 | a | 68.93 | a | 53.35 | 48.03 | 65.03 | |||||||||||
2016 | 44.65 | 52.60 | 60.60 | 67.10 | 73.66 | 79.97 | 87.37 | 81.98 | 77.42 | 72.47 | 58.88 | 47.58 | 67.02 | |||||||||||||
2017 | 47.92 | 55.68 | 64.18 | c | 71.08 | l | 73.53 | a | 84.24 | g | ----- | z | 78.73 | p | 78.40 | 66.15 | 59.17 | 46.37 | 61.42 | d | ||||||
2018 | 43.17 | b | 52.43 | 62.16 | 67.57 | 81.80 | a | 86.50 | b | 85.87 | 85.15 | 75.25 | 65.26 | 50.82 | 46.48 | 66.87 | ||||||||||
2019 | 47.18 | 52.48 | 55.52 | 66.50 | 72.55 | 80.88 | 84.39 | 88.76 | 81.62 | 66.88 | a | 52.63 | 50.16 | 66.63 | ||||||||||||
2020 | 49.69 | 47.00 | 62.71 | 66.92 | 78.26 | 83.65 | 88.69 | 86.90 | 74.25 | 68.02 | a | 61.90 | 47.23 | 67.93 | ||||||||||||
2021 | 44.76 | 42.88 | 59.60 | 64.45 | 75.40 | 82.25 | 81.94 | 81.61 | 79.42 | 71.34 | 57.68 | 57.44 | 66.56 | |||||||||||||
2022 | 44.11 | 44.46 | 59.16 | f | 71.47 | 80.08 | 86.15 | j | 86.84 | 83.56 | 77.33 | 66.26 | 51.88 | 48.28 | a | 65.43 | b | |||||||||
2023 | 54.89 | l | 53.16 | c | 60.81 | 66.93 | 75.47 | 85.80 | 88.82 | 89.37 | 85.42 | 70.85 | 57.60 | 53.10 | 71.58 | a | ||||||||||
2024 | 46.55 | 57.57 | 60.09 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 54.74 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 45.80 | 50.33 | 58.74 | 67.31 | 75.09 | 81.80 | 83.77 | 82.89 | 76.32 | 66.90 | 55.14 | 47.13 | 65.97 | |||||||||||||
S.D. | 3.63 | 3.80 | 3.67 | 2.60 | 3.33 | 2.57 | 2.63 | 2.57 | 2.97 | 2.50 | 3.62 | 3.52 | 1.50 | |||||||||||||
SKEW | -0.38 | -0.05 | -0.70 | -0.14 | 0.13 | 0.84 | -0.14 | 0.47 | 0.37 | -0.21 | -0.45 | 0.27 | -0.46 | |||||||||||||
MAX | 52.61 | 59.17 | 66.74 | 72.40 | 83.09 | 88.63 | 88.82 | 89.37 | 85.42 | 72.47 | 61.90 | 57.44 | 68.79 | |||||||||||||
MIN | 35.06 | 41.76 | 48.60 | 60.08 | 65.68 | 77.43 | 77.95 | 78.87 | 68.98 | 60.34 | 45.47 | 40.19 | 62.25 | |||||||||||||
YRS | 54 | 56 | 53 | 52 | 54 | 55 | 57 | 53 | 59 | 56 | 53 | 54 | 31 |