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 | 48.31 | b | 48.31 | k |
1936 | 50.29 | 43.93 | 55.94 | 66.03 | 71.39 | 74.10 | 80.65 | 83.55 | 77.83 | 71.45 | 56.17 | 47.42 | 64.90 | |||||||||||||
1937 | 37.55 | 46.07 | 56.06 | 56.53 | 67.23 | 73.50 | 80.57 | a | 79.77 | 75.37 | 67.58 | 55.03 | 50.13 | a | 62.12 | |||||||||||
1938 | 46.61 | 48.43 | 53.94 | 62.27 | 69.84 | 77.87 | 86.00 | 80.07 | a | 80.23 | 65.13 | 50.43 | 48.77 | 64.13 | ||||||||||||
1939 | 48.68 | 46.57 | 57.61 | 65.90 | 70.48 | 70.27 | 83.29 | 84.19 | 79.03 | 65.58 | 54.93 | 50.16 | 64.73 | |||||||||||||
1940 | 46.84 | 51.90 | 58.97 | 63.97 | 72.06 | 79.50 | 81.10 | 85.16 | 77.17 | 66.29 | 52.07 | 48.84 | 65.32 | |||||||||||||
1941 | 48.48 | 55.57 | 62.87 | 64.97 | 67.61 | 71.17 | 86.39 | 80.45 | 70.77 | 64.42 | 53.10 | 47.90 | 64.48 | |||||||||||||
1942 | 41.55 | 50.04 | 55.48 | 61.53 | 64.90 | 69.50 | 81.35 | 84.32 | 79.87 | 68.52 | 52.57 | 48.61 | 63.19 | |||||||||||||
1943 | 41.84 | 53.68 | 54.42 | 63.77 | 65.00 | 69.70 | 80.61 | 78.84 | 81.80 | 65.16 | 54.80 | 47.65 | 63.11 | |||||||||||||
1944 | 45.29 | 50.28 | 55.42 | 59.03 | 67.10 | 71.93 | 81.84 | 80.90 | 80.53 | 68.97 | 52.63 | 45.71 | 63.30 | |||||||||||||
1945 | 48.26 | 50.75 | 50.94 | 57.60 | 68.61 | 73.57 | 83.52 | 82.94 | 74.03 | 67.32 | 51.97 | a | 47.29 | 63.07 | ||||||||||||
1946 | 45.53 | a | 49.21 | 54.58 | 60.97 | 70.26 | 69.93 | 80.48 | 84.16 | 74.77 | 60.65 | 51.73 | 47.45 | 62.48 | ||||||||||||
1947 | 43.58 | 54.93 | 59.68 | 64.30 | 73.84 | 70.03 | a | 76.55 | 77.60 | a | 78.70 | 62.84 | 55.63 | 48.87 | 63.88 | |||||||||||
1948 | ----- | z | 48.07 | 50.23 | 55.13 | 64.77 | ----- | z | 79.07 | b | 75.68 | 75.77 | 65.68 | 50.87 | 41.87 | a | 60.71 | b | ||||||||
1949 | 37.07 | d | 47.07 | 55.72 | b | 67.60 | 72.90 | 79.67 | 81.45 | 79.40 | a | 78.93 | a | 65.29 | 57.50 | 47.61 | 64.19 | |||||||||
1950 | 35.55 | 49.04 | a | 53.83 | b | 60.27 | 68.67 | a | 75.28 | a | 82.57 | a | 84.90 | 79.33 | 58.94 | 52.23 | 51.55 | 62.68 | ||||||||
1951 | 44.37 | a | 50.62 | b | 49.60 | a | 68.00 | 69.33 | a | 80.82 | b | 82.69 | b | 82.67 | a | 80.80 | 62.94 | 51.90 | 43.40 | a | 63.93 | |||||
1952 | 42.53 | a | 46.72 | 52.61 | 64.83 | a | 70.32 | 72.38 | a | 86.13 | 82.74 | 82.57 | 73.90 | 48.65 | j | 46.61 | 65.58 | a | ||||||||
1953 | 51.16 | 51.82 | 54.71 | c | 59.57 | 64.72 | b | 67.19 | c | 81.60 | a | 78.83 | a | 78.55 | a | 66.23 | e | 54.50 | 49.17 | a | 63.17 | |||||
1954 | 45.20 | a | 52.22 | a | 54.83 | b | 61.20 | 70.83 | b | 68.21 | a | 76.61 | 74.50 | a | 72.62 | a | 64.30 | a | 55.55 | a | 46.62 | b | 61.89 | |||
1955 | 44.31 | b | 48.41 | a | 49.75 | c | 54.17 | 65.29 | c | 73.17 | 74.50 | c | 81.96 | c | 75.59 | a | 62.97 | b | 49.89 | b | 46.52 | 60.54 | ||||
1956 | 46.19 | 42.41 | 51.28 | b | 64.80 | 74.07 | c | 71.00 | c | 84.87 | a | 80.20 | a | 77.87 | 61.17 | b | 51.59 | a | 46.57 | a | 62.67 | |||||
1957 | 39.00 | b | 51.40 | c | 54.14 | c | 62.76 | e | 69.61 | c | 74.47 | 79.47 | a | 78.06 | 82.67 | 63.69 | b | 55.26 | c | 49.55 | 63.34 | |||||
1958 | 49.45 | 54.93 | 54.74 | 59.59 | a | 74.06 | 75.13 | 88.55 | 87.77 | 77.27 | 70.23 | 52.97 | a | 51.26 | 66.33 | |||||||||||
1959 | 48.29 | 49.37 | a | 55.10 | b | 63.23 | 65.77 | 72.24 | a | 84.83 | a | 81.10 | a | 71.47 | 65.90 | 56.07 | a | 46.42 | 63.32 | |||||||
1960 | 42.84 | 49.86 | 54.39 | 61.07 | 64.32 | 78.27 | 87.32 | 79.48 | 78.27 | 67.10 | a | 53.63 | 47.10 | a | 63.64 | |||||||||||
1961 | 51.27 | a | 52.78 | a | 54.87 | 60.67 | 66.61 | 81.63 | 84.87 | 87.55 | 75.10 | 66.74 | 51.50 | 47.00 | 65.05 | |||||||||||
1962 | 45.43 | a | 50.11 | 53.16 | 64.72 | a | 62.16 | 75.72 | a | 82.69 | b | 78.97 | 77.13 | 64.03 | a | 59.66 | a | 51.71 | 63.79 | |||||||
1963 | 43.10 | 57.36 | 54.52 | b | 58.41 | a | 71.07 | a | 74.62 | a | 76.16 | 82.26 | 80.14 | a | 63.29 | ----- | z | 47.94 | 64.44 | a | ||||||
1964 | ----- | z | ----- | z | 52.58 | 61.50 | ----- | z | ----- | z | ----- | z | ----- | z | 76.07 | ----- | z | 51.76 | a | 48.57 | a | 58.09 | g | |||
1965 | 45.13 | 52.36 | 61.41 | b | 63.30 | 67.77 | 77.33 | 85.61 | 82.42 | 77.00 | 68.53 | a | 55.93 | 43.55 | 65.03 | |||||||||||
1966 | 47.39 | 50.44 | a | 54.29 | 63.83 | 72.87 | 75.63 | 81.00 | 83.74 | 77.47 | 65.37 | a | 55.43 | 49.26 | 64.73 | |||||||||||
1967 | 49.48 | 53.59 | a | 53.65 | 57.27 | 70.19 | 79.90 | 85.39 | 92.10 | 84.28 | a | 65.04 | c | 52.60 | ----- | z | 67.59 | a | ||||||||
1968 | 46.26 | 58.56 | b | 57.55 | 60.10 | a | 68.32 | 74.83 | 84.35 | 78.68 | 76.40 | 62.28 | b | 52.90 | 44.39 | 63.72 | ||||||||||
1969 | 40.55 | 47.00 | 59.74 | 60.33 | 73.57 | a | 78.37 | 79.83 | a | 81.10 | 75.67 | 62.71 | 53.53 | 47.45 | b | 63.32 | ||||||||||
1970 | 47.10 | 55.75 | 57.47 | a | 58.13 | 70.81 | 80.40 | 84.97 | 83.84 | 74.10 | 65.06 | 52.76 | a | 44.50 | a | 64.57 | ||||||||||
1971 | 45.07 | a | 48.86 | 51.00 | 60.87 | 70.43 | a | 68.52 | a | 83.39 | 85.71 | 74.17 | 63.00 | 51.87 | 44.93 | a | 62.32 | |||||||||
1972 | 45.10 | 50.55 | 57.29 | 56.93 | 72.13 | 75.97 | a | 87.03 | 87.55 | 74.13 | 66.19 | 52.97 | a | 41.32 | 63.93 | |||||||||||
1973 | 44.00 | a | 53.37 | a | 54.40 | a | 62.87 | 72.26 | 76.33 | 85.81 | 80.87 | 77.90 | 62.84 | 48.23 | 48.32 | 63.93 | ||||||||||
1974 | 44.52 | 48.00 | 55.35 | 59.90 | 64.84 | 78.00 | 80.90 | 84.07 | a | 85.73 | 69.58 | 53.23 | 49.71 | 64.49 | ||||||||||||
1975 | 48.45 | 49.32 | 52.90 | 57.13 | 69.55 | 73.27 | 82.03 | 77.77 | 83.27 | 60.94 | 52.17 | a | 49.00 | a | 62.98 | |||||||||||
1976 | 49.10 | 49.83 | 54.32 | 59.69 | a | 70.10 | 72.33 | 81.43 | a | 78.28 | b | 78.40 | 67.74 | 56.93 | a | 45.16 | 63.61 | |||||||||
1977 | 47.16 | 55.07 | a | 53.81 | 65.69 | a | 63.74 | 78.57 | 81.21 | b | 88.03 | 71.97 | 65.16 | 49.62 | a | 47.19 | 63.94 | |||||||||
1978 | 45.55 | 52.00 | 60.71 | 60.07 | 66.87 | 78.60 | 83.87 | 82.10 | 70.30 | 69.26 | 47.47 | 42.39 | 63.26 | |||||||||||||
1979 | 38.68 | 49.29 | 59.68 | 61.43 | 71.16 | 77.40 | 85.34 | b | 80.68 | 78.23 | 68.17 | a | 51.17 | 50.00 | c | 64.27 | ||||||||||
1980 | 43.81 | 50.93 | b | 53.97 | b | 64.83 | a | 67.39 | 68.79 | a | 83.26 | 80.70 | a | 78.25 | b | 69.00 | d | 53.57 | 48.00 | a | 63.54 | |||||
1981 | 50.13 | a | 51.57 | 58.14 | j | 57.56 | n | 60.21 | c | 70.90 | a | 80.64 | c | 80.44 | f | 76.96 | b | 62.50 | k | 53.65 | g | 46.87 | a | 62.47 | e | |
1982 | 42.21 | g | 48.23 | b | 54.62 | b | 58.00 | c | 68.93 | d | 77.21 | f | 78.42 | g | 81.00 | c | 76.31 | a | 64.55 | 49.76 | a | 45.90 | a | 60.81 | c | |
1983 | 48.81 | 51.64 | 56.10 | 62.53 | 71.67 | a | 71.80 | 76.07 | a | 81.90 | 74.20 | 65.25 | c | 53.33 | 38.57 | a | 62.66 | |||||||||
1984 | 49.33 | a | 51.26 | b | 58.35 | 57.90 | a | 65.06 | 71.53 | 84.23 | 82.43 | a | 75.21 | a | 60.58 | 50.61 | b | 43.03 | b | 62.46 | ||||||
1985 | 44.70 | a | 47.85 | a | 53.55 | 64.03 | ----- | z | 77.07 | 89.90 | 83.45 | 72.03 | 62.97 | 44.63 | 41.77 | a | 62.00 | a | ||||||||
1986 | 49.97 | 50.29 | 60.00 | 61.03 | 68.74 | d | 79.66 | a | 77.48 | 87.94 | 71.17 | 67.45 | b | 51.03 | a | 46.20 | a | 64.25 | ||||||||
1987 | 45.84 | 51.36 | 55.87 | 66.53 | 70.48 | 80.24 | a | 77.13 | 85.23 | 79.73 | 74.47 | a | 52.80 | 42.13 | a | 65.15 | ||||||||||
1988 | 43.67 | a | 53.14 | a | 56.76 | b | 61.72 | a | 65.42 | 71.61 | b | 83.00 | 83.84 | 78.86 | b | 69.00 | c | 50.97 | 45.19 | 63.60 | ||||||
1989 | 47.20 | a | 42.86 | 52.29 | 66.66 | a | 68.32 | 75.68 | b | 77.19 | 77.55 | 82.31 | a | 64.13 | 52.72 | a | 42.58 | 62.46 | ||||||||
1990 | 46.67 | a | 47.64 | 57.84 | 64.17 | a | 65.19 | 72.87 | 84.52 | 83.13 | 80.40 | 61.71 | 53.13 | 40.23 | a | 63.13 | ||||||||||
1991 | 46.57 | a | 55.11 | 53.00 | b | 58.34 | a | 62.00 | 69.14 | a | 82.97 | 81.83 | a | 83.83 | 70.03 | a | 52.38 | a | 46.10 | 63.44 | ||||||
1992 | 48.42 | 57.04 | a | 63.82 | c | 62.77 | 75.68 | 79.55 | a | 83.17 | a | 86.53 | a | 75.41 | a | 66.71 | c | 51.07 | b | 44.04 | c | 66.18 | ||||
1993 | 41.66 | b | 47.17 | d | 56.55 | b | 58.86 | a | 72.19 | e | 70.64 | e | 72.83 | a | 81.80 | a | 81.96 | b | 69.80 | a | 48.17 | 46.14 | c | 62.31 | ||
1994 | 50.39 | c | 49.63 | a | 60.70 | a | 62.52 | a | 70.22 | d | 71.32 | h | 86.38 | e | 80.90 | a | 81.45 | a | 63.41 | b | 46.41 | a | 47.00 | e | 63.55 | a |
1995 | 49.15 | d | 54.67 | g | 56.39 | 60.57 | b | 70.79 | b | 76.27 | d | 82.77 | a | 80.48 | b | 78.53 | 62.62 | b | 56.40 | 46.55 | 65.50 | a | ||||
1996 | 45.68 | 50.79 | e | 59.04 | c | 62.40 | 62.48 | b | 72.43 | b | 86.77 | 84.90 | a | 73.50 | 62.68 | 51.11 | c | 46.03 | b | 63.15 | ||||||
1997 | 45.78 | d | 51.00 | b | 54.70 | a | 59.79 | b | 73.62 | b | 72.21 | b | 80.42 | 84.39 | 77.17 | a | 60.90 | a | 54.30 | c | 44.13 | a | 63.20 | |||
1998 | 47.33 | a | 51.31 | b | 55.73 | a | 60.83 | 62.70 | a | 72.19 | d | 84.20 | a | 85.13 | 80.87 | 62.41 | b | 51.96 | c | 43.71 | 63.20 | |||||
1999 | 46.50 | a | 47.82 | 51.68 | 62.23 | 64.60 | a | 70.47 | 80.74 | 80.45 | 81.33 | 68.10 | a | 54.79 | a | 47.40 | a | 63.01 | ||||||||
2000 | 46.29 | c | 49.64 | a | 54.77 | 64.57 | 65.97 | b | 77.60 | 80.45 | 81.23 | 75.53 | 64.84 | 48.70 | 45.84 | 62.95 | ||||||||||
2001 | 47.50 | a | 51.81 | a | 57.72 | b | 58.53 | 72.30 | a | 71.47 | 79.16 | 82.14 | b | 78.57 | 65.13 | 52.96 | b | 46.38 | b | 63.64 | ||||||
2002 | 45.42 | 52.27 | b | 51.97 | b | 61.80 | 65.70 | a | 74.38 | a | 84.37 | d | 83.90 | a | 79.07 | 65.87 | 55.55 | a | 48.13 | 64.04 | ||||||
2003 | 51.03 | 52.81 | a | 56.13 | 57.57 | 69.30 | a | 79.20 | 86.58 | 85.28 | b | 81.77 | 68.00 | 51.69 | a | 47.10 | b | 65.54 | ||||||||
2004 | 43.55 | b | 51.61 | a | 61.42 | 66.18 | b | 68.87 | a | 75.73 | 85.30 | a | 84.33 | a | 74.20 | 66.28 | b | 51.13 | 47.89 | c | 64.71 | |||||
2005 | 48.06 | 53.61 | 59.71 | 61.14 | b | 69.26 | 69.93 | 83.71 | 86.68 | 76.57 | 62.38 | b | 50.83 | 44.13 | 63.83 | |||||||||||
2006 | 47.77 | a | 50.39 | 53.10 | 63.07 | b | 71.23 | 75.87 | 84.40 | f | 82.45 | i | 79.10 | i | 65.22 | h | 50.52 | a | 44.96 | d | 57.11 | d | ||||
2007 | 44.93 | b | 51.52 | a | 58.25 | g | 60.30 | g | 69.88 | f | 72.91 | h | 83.04 | h | 80.68 | l | 75.96 | e | 60.38 | e | 50.27 | d | 45.25 | g | 56.61 | g |
2008 | 42.60 | f | 51.15 | b | 51.72 | f | 55.04 | f | 67.91 | i | 71.61 | l | 83.52 | h | 82.50 | k | 78.67 | f | 62.90 | j | 54.90 | i | 41.96 | d | 46.56 | j |
2009 | 46.72 | f | 48.35 | b | 51.67 | g | 60.28 | e | 70.56 | d | 72.57 | 83.71 | 79.35 | 75.90 | 60.94 | 52.17 | 41.45 | 64.53 | b | |||||||
2010 | 49.39 | 52.32 | 55.03 | 57.50 | 62.03 | 67.57 | 79.61 | 79.42 | 72.57 | 62.55 | 50.07 | 46.13 | 61.18 | |||||||||||||
2011 | 45.42 | 45.96 | 51.23 | 54.37 | 60.58 | 67.97 | 76.19 | 80.32 | 79.20 | 60.97 | 49.60 | 42.65 | 59.54 | |||||||||||||
2012 | 45.94 | 48.76 | 49.81 | 59.90 | 65.90 | 67.27 | 76.77 | 82.84 | 79.50 | 65.45 | 52.63 | 46.32 | 61.76 | |||||||||||||
2013 | 42.26 | 49.79 | ----- | z | 60.43 | 68.52 | 72.97 | 83.19 | 81.97 | 73.03 | 63.19 | 51.57 | 41.00 | 62.54 | a | |||||||||||
2014 | 46.68 | 46.82 | 58.26 | 61.37 | 70.39 | 72.53 | 87.03 | 85.90 | 79.97 | 68.65 | 52.43 | 49.19 | 64.93 | |||||||||||||
2015 | 47.97 | 54.39 | 61.16 | 60.67 | 68.42 | 80.90 | 85.52 | 83.68 | 75.03 | 69.23 | 51.87 | 47.19 | 65.50 | |||||||||||||
2016 | 45.97 | 54.31 | 56.32 | 68.10 | 71.06 | 76.33 | 79.00 | 86.45 | 75.90 | 61.06 | 55.77 | 41.39 | 64.31 | |||||||||||||
2017 | 40.19 | 48.25 | 54.00 | 58.17 | 71.00 | 74.60 | 84.06 | 88.71 | 79.60 | 64.00 | 52.23 | 45.65 | 63.37 | |||||||||||||
2018 | 49.90 | 48.50 | 53.55 | 61.40 | 70.97 | 75.47 | 86.87 | 84.58 | 75.17 | 66.48 | 54.50 | 47.39 | 64.56 | |||||||||||||
2019 | 48.26 | 42.96 | 55.61 | 60.90 | 70.61 | 76.20 | 80.23 | 83.81 | 72.47 | 60.42 | 54.57 | 46.29 | 62.69 | |||||||||||||
2020 | 49.00 | 51.34 | 55.03 | 63.87 | 68.29 | 73.53 | 81.26 | 82.74 | 76.53 | 64.55 | 50.90 | 47.48 | 63.71 | |||||||||||||
2021 | 47.61 | 47.00 | 52.90 | 64.43 | 68.13 | 79.60 | 85.58 | 85.81 | 78.03 | 61.26 | 54.63 | 45.87 | 64.24 | |||||||||||||
2022 | 48.45 | 51.61 | 56.97 | 56.20 | 63.16 | 71.97 | 85.29 | 86.55 | 80.37 | 72.13 | 48.83 | 45.19 | 63.89 | |||||||||||||
2023 | 46.97 | 46.21 | 50.55 | 58.23 | 74.81 | 78.00 | 85.97 | 87.74 | 75.73 | 64.32 | 53.03 | 50.81 | 64.36 | |||||||||||||
2024 | 47.13 | 50.55 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 48.84 | j | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 45.96 | 50.41 | 55.44 | 61.37 | 68.57 | 74.28 | 82.43 | 82.67 | 77.43 | 65.26 | 52.48 | 46.27 | 63.61 | |||||||||||||
S.D. | 3.28 | 3.16 | 3.12 | 3.13 | 3.50 | 3.78 | 3.45 | 3.20 | 3.33 | 3.24 | 2.51 | 2.75 | 1.18 | |||||||||||||
SKEW | -0.94 | -0.05 | 0.43 | 0.00 | -0.36 | 0.05 | -0.47 | 0.12 | 0.05 | 0.50 | -0.15 | -0.46 | -0.52 | |||||||||||||
MAX | 51.27 | 58.56 | 63.82 | 68.10 | 75.68 | 81.63 | 89.90 | 92.10 | 85.73 | 74.47 | 59.66 | 51.71 | 66.33 | |||||||||||||
MIN | 35.55 | 42.41 | 49.60 | 54.17 | 60.21 | 67.19 | 72.83 | 74.50 | 70.30 | 58.94 | 44.63 | 38.57 | 59.54 | |||||||||||||
YRS | 84 | 87 | 83 | 85 | 84 | 82 | 83 | 83 | 86 | 84 | 84 | 87 | 73 |