YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1923 | ----- | z | ----- | z | 55.62 | o | 67.39 | b | 76.47 | a | 83.28 | a | 89.68 | 88.67 | a | 79.07 | a | 61.11 | c | 54.31 | a | 41.88 | f | 75.00 | d | |
1924 | 45.33 | a | 52.04 | c | 49.33 | a | 68.52 | c | 73.67 | a | 91.27 | 87.06 | 90.68 | 80.83 | a | 72.19 | 60.90 | a | 43.96 | c | 67.98 | |||||
1925 | 47.13 | a | 58.78 | a | 66.94 | 75.71 | b | 79.89 | c | 90.67 | 90.80 | a | 83.26 | 77.83 | a | 60.82 | c | 58.17 | 48.41 | d | 69.87 | |||||
1926 | 45.67 | a | 58.36 | 53.21 | b | 60.52 | a | 73.29 | 83.14 | a | 87.94 | 91.10 | a | 83.41 | c | 71.17 | a | 58.10 | a | 47.82 | c | 67.81 | ||||
1927 | 53.55 | b | 57.96 | c | 61.17 | a | 74.57 | 86.83 | a | 87.50 | b | 90.55 | 84.39 | 80.29 | b | 72.26 | 63.83 | a | 46.44 | d | 71.61 | |||||
1928 | 52.58 | 50.59 | b | 63.71 | c | 66.59 | a | 76.45 | b | 83.57 | 90.03 | a | 84.58 | 81.47 | 72.87 | a | 51.31 | a | 46.59 | b | 68.36 | |||||
1929 | 48.07 | a | 40.56 | a | 59.48 | 72.07 | 73.04 | c | 87.48 | a | 91.19 | 89.55 | 78.53 | 70.69 | b | 48.54 | b | 54.13 | a | 67.78 | ||||||
1930 | 40.28 | f | 61.00 | 55.86 | b | 76.63 | 77.70 | a | 89.63 | 91.27 | a | 90.23 | 82.90 | 63.17 | b | 54.55 | a | 46.00 | 71.72 | a | ||||||
1931 | 46.87 | a | 53.41 | a | 56.00 | d | 65.18 | b | 73.60 | a | 89.37 | 91.10 | 85.77 | 87.77 | 72.03 | a | 55.72 | a | 47.53 | a | 68.70 | |||||
1932 | 42.47 | a | 59.41 | 56.97 | b | 72.45 | a | 80.26 | 82.57 | 92.47 | a | 89.43 | a | 76.43 | 69.50 | c | 58.76 | a | 39.87 | a | 68.38 | |||||
1933 | 53.20 | a | 49.11 | a | 63.28 | b | 69.30 | c | 80.61 | 93.03 | 94.80 | a | 86.87 | a | 84.27 | 73.73 | a | 61.89 | b | 58.87 | 72.41 | |||||
1934 | 51.70 | a | 53.62 | b | 62.21 | c | 71.86 | a | 82.97 | b | 92.23 | 98.16 | 92.97 | 82.03 | a | 75.35 | 57.90 | 50.52 | 72.63 | |||||||
1935 | 54.90 | b | 55.15 | a | 64.83 | b | 69.89 | b | 71.71 | c | 87.90 | 94.58 | 91.17 | a | 79.52 | c | 73.64 | c | 57.93 | c | 48.17 | b | 70.78 | |||
1936 | 46.30 | d | 49.67 | b | 64.39 | c | 73.22 | c | 77.40 | a | 88.72 | a | 91.03 | 94.03 | a | 79.43 | b | 69.48 | d | 57.50 | b | 51.10 | b | 70.19 | ||
1937 | 43.79 | b | 51.12 | c | 56.46 | c | 70.89 | c | 78.87 | 85.50 | 93.65 | 94.58 | 83.57 | 73.20 | a | 57.03 | 49.93 | c | 69.88 | |||||||
1938 | 50.97 | a | 53.12 | b | 64.48 | b | 70.59 | a | 79.03 | a | 87.21 | a | 90.77 | 95.35 | 83.00 | 73.48 | 56.63 | 51.42 | 71.34 | |||||||
1939 | 49.84 | 47.11 | 64.13 | 69.60 | 79.10 | 90.03 | 92.48 | 88.29 | 86.53 | 72.94 | 57.40 | 53.55 | 70.92 | |||||||||||||
1940 | 38.94 | 50.93 | 63.45 | 71.53 | 80.48 | 87.20 | 97.29 | 87.35 | 88.43 | 76.52 | 56.21 | a | 51.37 | a | 70.81 | |||||||||||
1941 | 50.48 | 52.82 | 54.94 | 66.13 | 73.87 | 81.10 | 86.19 | 86.61 | 80.10 | 67.39 | 61.13 | 51.19 | 67.66 | |||||||||||||
1942 | 50.87 | 51.22 | a | 60.77 | 67.83 | 78.81 | 87.34 | a | 91.84 | 87.26 | 78.17 | 66.90 | 65.47 | 52.42 | 69.91 | |||||||||||
1943 | 52.16 | 60.54 | 62.10 | a | 75.30 | 77.47 | a | 88.77 | 91.19 | 94.74 | 82.60 | 72.26 | 59.39 | b | 40.52 | 71.42 | ||||||||||
1944 | 40.87 | 51.38 | 61.13 | 67.43 | 78.00 | 85.27 | 90.61 | 92.55 | 81.93 | 71.16 | 58.43 | 45.52 | 68.69 | |||||||||||||
1945 | 49.61 | 54.64 | 65.77 | 68.37 | 83.93 | a | 88.77 | 89.94 | 89.32 | 83.53 | 70.29 | 62.43 | 51.55 | 71.51 | ||||||||||||
1946 | 48.61 | 58.07 | 66.55 | 79.34 | a | 78.00 | a | 92.00 | 94.90 | 90.94 | 80.10 | 69.65 | 56.03 | 55.61 | 72.48 | |||||||||||
1947 | 47.06 | 49.79 | 57.13 | 66.67 | 74.90 | 88.63 | 93.70 | d | 92.10 | 88.93 | 79.19 | 55.80 | 50.90 | 70.40 | ||||||||||||
1948 | 45.61 | 47.97 | 55.90 | 79.27 | 80.71 | 90.52 | a | 94.16 | 91.16 | 86.90 | 74.84 | 58.47 | 55.74 | 71.77 | ||||||||||||
1949 | 40.71 | 51.57 | 64.42 | 66.87 | 77.29 | 85.43 | 90.87 | 88.97 | 82.33 | 73.87 | 71.03 | 52.84 | 70.52 | |||||||||||||
1950 | 58.21 | b | 64.68 | 67.10 | 74.57 | 81.48 | 89.20 | 85.48 | 86.39 | 77.20 | 79.71 | 64.72 | a | 56.74 | 73.79 | |||||||||||
1951 | 50.77 | 57.68 | 60.87 | 70.10 | 78.03 | 83.60 | 94.03 | 94.06 | 86.57 | 74.84 | 58.50 | 54.06 | 71.93 | |||||||||||||
1952 | 56.10 | 58.76 | 60.74 | 69.47 | 80.77 | 94.40 | 92.26 | 94.42 | 83.97 | a | 76.32 | 56.10 | 49.19 | 72.71 | ||||||||||||
1953 | 62.45 | 56.68 | 68.65 | 72.83 | 81.81 | 98.97 | 94.90 | 90.52 | 90.10 | 73.97 | 62.30 | 48.65 | 75.15 | |||||||||||||
1954 | 56.16 | 67.32 | 63.35 | 78.67 | 74.97 | 92.33 | 96.81 | 92.00 | 89.57 | 76.35 | 65.87 | 58.48 | h | 77.58 | a | |||||||||||
1955 | 53.10 | 55.18 | 67.00 | 74.13 | 79.72 | b | 86.97 | 91.35 | 90.87 | 84.60 | 76.90 | 62.97 | 59.35 | 73.51 | ||||||||||||
1956 | 54.77 | 49.38 | c | 68.41 | b | 71.97 | 87.45 | 93.70 | 93.84 | 92.61 | 89.70 | 79.55 | 60.93 | 56.67 | a | 74.92 | ||||||||||
1957 | 55.68 | f | 62.32 | 60.35 | 63.03 | a | 70.19 | 85.00 | 97.29 | 91.39 | 82.67 | 67.61 | 50.93 | b | 59.39 | 71.83 | a | |||||||||
1958 | 49.23 | 51.29 | 45.52 | 63.27 | 79.68 | 91.33 | 91.65 | 92.42 | 82.23 | 69.97 | 62.13 | 54.35 | 69.42 | |||||||||||||
1959 | 47.97 | a | 51.89 | 60.10 | 68.57 | 80.16 | 89.53 | 89.58 | 91.00 | 86.00 | 67.77 | 56.10 | 50.29 | 69.91 | ||||||||||||
1960 | 41.84 | 43.45 | 56.29 | 72.97 | 80.10 | 87.24 | a | 85.58 | 88.13 | 82.30 | 70.65 | 61.83 | 44.35 | 67.89 | ||||||||||||
1961 | 49.84 | 53.36 | 58.94 | 65.19 | d | 80.90 | 85.93 | 87.06 | 87.58 | 80.00 | 74.68 | 50.50 | 47.81 | 68.48 | ||||||||||||
1962 | 45.10 | 61.68 | 58.71 | 70.30 | 86.03 | 83.73 | 87.90 | 89.58 | 82.00 | b | 74.97 | 61.30 | 53.03 | 71.19 | ||||||||||||
1963 | 45.84 | 55.29 | 63.74 | 76.70 | 82.47 | a | 84.10 | a | 92.10 | 88.00 | 83.27 | 79.77 | a | 63.43 | 46.10 | 71.73 | ||||||||||
1964 | 51.58 | 42.17 | 59.00 | a | 72.70 | 82.16 | 87.10 | 94.13 | 89.35 | 79.80 | 73.90 | a | 57.47 | 50.10 | 69.96 | |||||||||||
1965 | 54.94 | 50.96 | a | 49.29 | 72.30 | 78.35 | 82.57 | 88.90 | 85.71 | 80.76 | a | 73.00 | 65.23 | 54.13 | 69.68 | |||||||||||
1966 | 42.26 | 46.79 | 64.42 | 69.20 | 77.32 | 84.07 | 94.13 | 81.32 | 78.73 | 69.81 | 64.97 | 48.39 | 68.45 | |||||||||||||
1967 | 53.68 | 52.89 | 67.48 | 72.37 | 76.13 | 82.83 | 84.10 | 84.19 | 77.27 | 74.39 | 57.83 | 43.19 | 68.86 | |||||||||||||
1968 | 47.32 | 49.17 | 58.32 | 65.83 | 72.48 | 87.30 | 86.32 | 85.74 | 80.83 | 74.58 | 55.87 | 52.13 | 67.99 | |||||||||||||
1969 | 56.15 | d | 52.32 | 48.71 | 69.50 | 77.81 | 82.50 | 92.13 | 90.58 | 78.77 | 63.81 | 59.10 | 52.48 | 68.65 | ||||||||||||
1970 | 45.65 | 57.25 | 53.55 | 66.33 | 80.55 | 86.40 | 89.48 | 91.00 | 80.63 | 64.61 | 59.17 | 57.94 | 69.38 | |||||||||||||
1971 | 51.74 | 49.61 | 61.48 | 69.43 | 77.65 | 89.33 | 89.23 | 82.23 | 77.83 | 69.74 | 59.07 | 48.87 | 68.85 | |||||||||||||
1972 | 53.16 | 57.97 | 69.19 | 74.60 | 76.48 | 88.47 | 86.42 | 85.48 | 79.07 | 69.97 | 47.45 | a | 46.27 | a | 69.54 | |||||||||||
1973 | 42.77 | 50.21 | 56.26 | 60.37 | 74.32 | 86.67 | 89.55 | 90.52 | 80.43 | 75.84 | 64.13 | 52.16 | 68.60 | |||||||||||||
1974 | 48.16 | 58.00 | 67.97 | 73.83 | 85.74 | 88.50 | 91.10 | 82.71 | 73.13 | 69.39 | 57.53 | 48.45 | 70.38 | |||||||||||||
1975 | 49.10 | 44.89 | 58.68 | 66.87 | 77.55 | 86.77 | 85.84 | 89.13 | 78.80 | 75.81 | 60.30 | 55.39 | 69.09 | |||||||||||||
1976 | 52.94 | 62.59 | 61.06 | 71.17 | 74.55 | 87.67 | 86.39 | 88.71 | 80.63 | 63.58 | 55.27 | 53.35 | 69.83 | |||||||||||||
1977 | 42.84 | 57.89 | 62.16 | 69.40 | 80.97 | 93.10 | 92.55 | 88.16 | 85.73 | 74.74 | 63.50 | 55.65 | 72.22 | |||||||||||||
1978 | 42.06 | 40.61 | 60.19 | 76.60 | 77.55 | 86.47 | 93.61 | 88.26 | 81.13 | 73.48 | 54.70 | 46.65 | 68.44 | |||||||||||||
1979 | 36.00 | 54.93 | 61.06 | 69.60 | 75.71 | 83.10 | 92.74 | 86.55 | 86.07 | 77.97 | 53.17 | 54.30 | a | 69.27 | ||||||||||||
1980 | 47.90 | 51.79 | 59.81 | 68.17 | 73.81 | 92.87 | 97.29 | 91.61 | 83.40 | 71.23 | 54.97 | 56.65 | 70.79 | |||||||||||||
1981 | 54.42 | 59.67 | a | 59.65 | 74.87 | 77.42 | 90.83 | 90.48 | 84.42 | 78.77 | 67.71 | 62.93 | 55.19 | 71.36 | ||||||||||||
1982 | 52.42 | 47.46 | 61.19 | 68.67 | 76.94 | 82.70 | 88.39 | 88.87 | 83.07 | 71.29 | 56.70 | 46.60 | a | 68.69 | ||||||||||||
1983 | 45.42 | 45.71 | 57.06 | 64.07 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 53.07 | h | ||||
1984 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1985 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1986 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1987 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1988 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1989 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1990 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1991 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1992 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1993 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1994 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1995 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1996 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1997 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1998 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1999 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2000 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2001 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2002 | ----- | z | ----- | z | ----- | z | ----- | z | 82.03 | 92.63 | 89.48 | 90.10 | 81.17 | 65.23 | 55.60 | 46.71 | 75.37 | d | ||||||||
2003 | 54.32 | 50.50 | 63.48 | 73.67 | 82.03 | 81.13 | 93.16 | 92.13 | 78.80 | 74.58 | 59.07 | 56.13 | 71.58 | |||||||||||||
2004 | 51.84 | 50.10 | 63.23 | 65.73 | 82.65 | 87.80 | 86.19 | 84.61 | 80.90 | 70.03 | 50.21 | a | 51.32 | 68.72 | ||||||||||||
2005 | 50.90 | a | 52.04 | 56.74 | 66.00 | 73.77 | 87.13 | 91.06 | 86.19 | 85.47 | 71.65 | 64.20 | 50.19 | 69.61 | ||||||||||||
2006 | 58.42 | 56.68 | 63.00 | 76.83 | 84.58 | 92.23 | 92.68 | 86.52 | 76.70 | 71.74 | 63.40 | 47.26 | 72.50 | |||||||||||||
2007 | 40.10 | 50.39 | 64.81 | 64.03 | 74.81 | 84.03 | 89.19 | 92.77 | 85.23 | 76.26 | 61.97 | 49.03 | 69.39 | |||||||||||||
2008 | 49.48 | 55.62 | 61.68 | 71.23 | 81.74 | 92.87 | 86.32 | 87.16 | 79.83 | 69.90 | b | 63.87 | 52.48 | 71.02 | ||||||||||||
2009 | 54.97 | a | 61.32 | c | 62.52 | h | 68.81 | d | 76.45 | 89.77 | 89.68 | 89.74 | 79.80 | 67.37 | a | 65.10 | 45.03 | 71.64 | a | |||||||
2010 | 49.13 | 39.04 | 58.71 | 70.43 | 76.77 | 93.23 | 89.23 | 92.06 | 89.13 | 75.47 | a | 61.69 | a | 54.35 | 70.77 | |||||||||||
2011 | 52.52 | 49.85 | a | 66.61 | 77.60 | 82.00 | 96.53 | 97.61 | 96.77 | 84.07 | 74.10 | a | 60.80 | 40.87 | 73.28 | |||||||||||
2012 | 56.68 | 51.00 | 65.33 | g | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 53.84 | j | ||
2013 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2014 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2015 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2016 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2017 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2018 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2019 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2020 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2021 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2022 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2023 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2024 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 49.38 | 53.12 | 60.72 | 70.37 | 78.55 | 88.01 | 91.08 | 89.19 | 82.09 | 71.91 | 58.97 | 50.64 | 70.33 | |||||||||||||
S.D. | 5.25 | 5.77 | 4.98 | 4.32 | 3.70 | 3.82 | 3.29 | 3.36 | 3.60 | 4.26 | 4.51 | 4.54 | 1.80 | |||||||||||||
SKEW | -0.20 | -0.09 | -0.73 | 0.00 | 0.18 | 0.32 | 0.09 | -0.16 | 0.37 | -0.53 | -0.22 | -0.19 | 0.60 | |||||||||||||
MAX | 62.45 | 67.32 | 69.19 | 79.34 | 87.45 | 98.97 | 98.16 | 96.77 | 90.10 | 79.77 | 71.03 | 59.39 | 75.15 | |||||||||||||
MIN | 36.00 | 39.04 | 45.52 | 60.37 | 70.19 | 81.10 | 84.10 | 81.32 | 73.13 | 60.82 | 47.45 | 39.87 | 67.66 | |||||||||||||
YRS | 68 | 70 | 68 | 70 | 70 | 70 | 70 | 70 | 70 | 70 | 70 | 68 | 64 |