YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1905 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1906 | ----- | z | 51.36 | 59.10 | 68.43 | 80.06 | 91.57 | 83.13 | 79.45 | 77.10 | 68.80 | a | 54.13 | 52.37 | a | 69.59 | a | |||||||||
1907 | 50.10 | 58.21 | 65.35 | 68.23 | 68.84 | 80.87 | 85.90 | 78.94 | 77.03 | 63.77 | 50.43 | 50.38 | b | 66.51 | ||||||||||||
1908 | 49.61 | 50.93 | 63.03 | 64.39 | b | 72.20 | f | 84.53 | 82.84 | 80.26 | 76.20 | 65.19 | 54.70 | 48.55 | 65.48 | a | ||||||||||
1909 | 54.26 | 52.54 | 56.87 | 69.93 | 77.42 | 85.87 | 87.32 | 81.52 | 75.97 | 71.42 | 59.27 | 39.19 | 67.63 | |||||||||||||
1910 | 49.81 | 51.14 | 65.23 | 68.30 | 78.10 | 87.67 | 89.10 | 84.52 | 80.57 | 69.65 | 61.03 | 52.63 | a | 69.81 | ||||||||||||
1911 | 54.29 | 48.33 | a | 60.42 | 65.33 | 77.29 | 83.67 | 80.16 | 84.77 | 77.97 | 64.84 | 52.37 | 39.68 | 65.76 | ||||||||||||
1912 | 49.13 | 51.24 | 55.71 | 59.73 | 74.65 | 80.70 | 84.58 | 82.65 | 75.53 | 64.26 | 55.47 | 39.27 | a | 64.41 | ||||||||||||
1913 | 40.90 | 47.46 | 54.77 | 64.40 | 76.06 | 81.33 | 87.26 | 82.84 | 72.63 | 67.68 | 57.07 | 40.90 | 64.44 | |||||||||||||
1914 | 51.71 | 52.50 | 59.97 | 68.33 | 80.35 | 85.17 | 76.77 | 83.03 | 78.37 | 66.26 | 60.27 | 40.68 | 66.95 | |||||||||||||
1915 | 43.10 | 48.39 | 50.94 | 61.93 | ----- | z | 88.57 | 87.48 | ----- | z | ----- | z | ----- | z | 61.56 | n | 51.57 | a | 61.71 | e | ||||||
1916 | 47.29 | g | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1917 | 39.38 | g | 51.11 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 51.11 | k | |
1918 | ----- | z | 54.88 | d | 57.88 | e | 65.00 | i | 71.54 | c | 77.08 | q | 85.00 | j | ----- | z | 78.20 | j | 74.89 | v | 42.10 | t | 41.38 | e | 56.42 | h |
1919 | 40.77 | i | 44.14 | g | 55.62 | j | 63.53 | m | 74.33 | m | 81.91 | h | 81.29 | j | 83.00 | g | 79.25 | r | 64.96 | h | 55.47 | o | 47.59 | i | ----- | z |
1920 | ----- | z | ----- | z | ----- | z | 62.05 | j | 75.67 | j | 81.89 | l | ----- | z | ----- | z | 76.42 | f | 68.20 | f | 60.71 | f | 51.16 | f | ----- | z |
1921 | 51.42 | g | 48.95 | g | 59.58 | e | 60.72 | e | 69.08 | f | 79.65 | g | 79.91 | i | 75.23 | e | 70.83 | f | 61.88 | g | 47.48 | g | 45.77 | e | 60.32 | h |
1922 | 39.36 | f | 49.86 | f | 38.79 | g | 52.71 | i | 72.70 | k | 86.44 | e | 87.42 | g | 83.08 | e | 76.96 | f | 62.62 | e | ----- | z | 42.88 | g | 77.38 | i |
1923 | 34.00 | g | ----- | z | 48.21 | c | 59.92 | e | ----- | z | 88.65 | g | 90.56 | m | 80.16 | f | 73.13 | 62.77 | 53.33 | 42.68 | 56.68 | f | ||||
1924 | 44.71 | 52.76 | 52.73 | a | 63.77 | 72.77 | 89.87 | 81.32 | 84.71 | 79.33 | 69.87 | a | 59.90 | a | 45.61 | 66.45 | ||||||||||
1925 | 47.55 | i | 56.89 | 63.84 | ----- | z | 77.71 | 85.40 | 84.16 | 79.72 | b | ----- | z | ----- | z | 55.21 | a | ----- | z | 71.85 | e | |||||
1926 | 39.29 | ----- | z | 55.50 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 86.50 | v | 72.35 | 63.77 | 43.13 | 54.81 | g | ||||
1927 | 55.10 | 53.18 | 54.44 | v | 61.23 | 71.77 | e | 76.67 | c | 78.79 | b | 72.33 | a | 66.35 | d | 61.94 | 58.80 | o | 35.56 | f | 66.37 | c | ||||
1928 | 44.48 | b | 43.90 | h | 61.32 | c | 64.53 | m | 71.57 | c | 83.57 | i | 86.13 | h | ----- | z | 80.17 | x | 70.69 | r | 53.18 | s | 43.16 | f | 59.13 | i |
1929 | 48.23 | a | 45.81 | b | 54.19 | e | 66.33 | o | 73.05 | j | ----- | z | ----- | z | 83.20 | k | 80.17 | a | ----- | z | ----- | z | ----- | z | 57.10 | h |
1930 | 53.97 | a | 56.93 | a | 55.39 | 70.61 | b | 71.58 | 86.17 | 78.80 | p | 84.55 | 78.83 | a | 67.97 | 51.11 | c | 45.27 | a | 65.67 | a | |||||
1931 | 45.23 | a | 47.07 | a | 56.70 | d | 48.12 | f | 75.65 | 85.33 | 86.37 | a | 81.00 | a | 77.00 | 61.39 | 49.60 | 35.12 | e | 63.68 | a | |||||
1932 | 38.79 | c | 51.10 | 43.21 | b | ----- | z | ----- | z | ----- | z | ----- | z | 83.74 | d | 77.93 | ----- | z | ----- | z | ----- | z | 58.95 | g | ||
1933 | 47.43 | x | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 60.56 | v | ----- | z |
1934 | ----- | z | ----- | z | 67.33 | d | 70.61 | b | 81.83 | g | 87.62 | f | 90.16 | l | 85.58 | ----- | z | ----- | z | ----- | z | ----- | z | 74.51 | i | |
1935 | ----- | z | 50.96 | e | 62.84 | 69.93 | 72.31 | b | 88.27 | 88.45 | 81.81 | 77.73 | d | 71.39 | 57.60 | 43.52 | 69.53 | a | ||||||||
1936 | 43.35 | 51.59 | 62.61 | 71.73 | 79.90 | 90.30 | 87.33 | a | 87.43 | a | 76.50 | 66.84 | 58.79 | b | 52.71 | 69.09 | ||||||||||
1937 | 36.71 | 48.71 | 50.97 | 69.60 | 76.29 | 87.21 | b | 85.71 | 84.81 | 74.38 | a | 66.87 | 56.13 | 48.67 | a | 65.51 | ||||||||||
1938 | 43.35 | 47.78 | a | 51.35 | 60.80 | 71.45 | 87.00 | 83.74 | 86.42 | 74.97 | 69.68 | 52.60 | 49.97 | 64.93 | ||||||||||||
1939 | 42.77 | 45.29 | 51.84 | 63.93 | 71.35 | 89.23 | 90.23 | 88.52 | 81.83 | 71.16 | 58.77 | 57.39 | 67.69 | |||||||||||||
1940 | 51.83 | a | 55.14 | a | 63.32 | 67.83 | a | 76.70 | a | 86.20 | 87.87 | 84.55 | 83.37 | 79.94 | 63.60 | 56.52 | 71.41 | |||||||||
1941 | 47.29 | 54.39 | 57.29 | 61.10 | a | 81.80 | a | 85.50 | 87.03 | 84.52 | 87.97 | a | 73.83 | a | 61.77 | ----- | z | 71.14 | a | |||||||
1942 | 53.65 | 52.25 | 59.26 | 66.03 | 75.68 | 85.80 | 86.35 | 82.26 | 76.73 | 65.83 | a | 62.12 | f | 51.90 | 68.70 | a | ||||||||||
1943 | 49.48 | 55.68 | 59.48 | 72.30 | 77.65 | 84.00 | a | 84.87 | 84.94 | 77.20 | 67.55 | 58.52 | a | 45.16 | 68.07 | |||||||||||
1944 | 44.00 | 51.17 | 57.19 | 63.58 | d | 73.87 | 84.07 | 83.71 | 83.48 | 77.20 | 66.42 | 51.83 | 48.39 | 65.41 | ||||||||||||
1945 | 47.81 | 55.32 | 56.23 | 65.73 | 76.77 | 83.30 | 84.87 | 83.90 | 80.87 | 72.61 | 60.63 | 47.65 | 67.97 | |||||||||||||
1946 | 40.52 | 51.71 | 59.20 | a | 71.57 | 73.61 | 86.83 | 84.23 | 81.32 | 78.54 | d | 67.90 | 52.54 | b | 53.10 | 66.76 | ||||||||||
1947 | 43.73 | a | 55.14 | 59.19 | d | 66.83 | a | 77.04 | d | 84.00 | 88.29 | 81.16 | 81.56 | c | 72.00 | e | 51.66 | a | 46.58 | 67.26 | ||||||
1948 | 51.67 | a | 48.81 | b | 53.03 | a | 70.83 | 76.87 | 83.83 | 86.77 | a | 85.19 | 80.33 | 67.06 | 54.03 | 50.84 | 67.44 | |||||||||
1949 | 37.77 | a | 49.33 | a | 60.17 | a | 66.70 | 76.12 | e | 83.77 | 85.16 | 83.65 | e | 79.97 | a | 65.09 | h | 65.52 | c | 48.26 | 66.95 | a | ||||
1950 | 51.60 | a | 56.22 | a | 61.45 | 70.93 | 76.84 | 88.50 | b | 85.28 | b | 85.03 | b | 79.61 | b | 77.39 | c | 63.92 | e | 58.38 | b | 71.26 | ||||
1951 | 50.83 | a | 51.73 | b | 57.93 | d | 64.81 | d | 76.87 | h | 84.86 | b | 88.84 | 83.70 | d | 81.74 | g | 69.93 | a | 57.48 | g | 48.66 | b | 66.81 | c | |
1952 | 52.48 | d | 50.79 | 52.78 | d | 63.97 | 74.48 | f | 85.09 | g | 85.68 | 85.71 | c | 78.43 | ----- | z | 38.83 | f | 46.03 | 64.48 | d | |||||
1953 | 55.30 | h | ----- | z | 56.18 | t | 66.19 | n | 71.96 | f | 84.78 | g | 82.25 | g | 86.37 | d | 82.79 | f | 70.45 | i | ----- | z | ----- | z | 86.37 | k |
1954 | ----- | z | 57.65 | e | 54.52 | j | 72.89 | b | 77.00 | c | 88.00 | i | 87.88 | e | 81.80 | f | 78.95 | j | 70.52 | f | 62.24 | e | 50.57 | h | 71.53 | g |
1955 | 44.38 | b | 49.04 | a | 60.04 | g | 67.76 | m | 74.28 | b | 85.57 | 82.93 | c | 83.09 | t | 81.63 | k | 72.52 | f | 60.06 | n | 58.15 | k | 67.24 | g | |
1956 | 53.43 | h | 31.38 | u | 60.29 | x | 65.97 | 78.19 | 85.90 | 84.90 | a | 86.50 | o | 86.89 | k | 71.57 | q | 57.28 | a | 53.68 | 70.99 | f | ||||
1957 | 51.31 | b | 61.09 | e | 59.55 | 65.50 | 71.62 | e | 87.18 | b | 88.32 | c | 81.44 | f | 82.09 | h | 66.85 | d | 52.09 | s | 56.37 | l | 68.93 | d | ||
1958 | 47.08 | e | 54.62 | g | 49.05 | j | 64.82 | h | 78.84 | 87.60 | 88.26 | 87.29 | g | 77.33 | c | 65.22 | h | 53.55 | h | 59.96 | h | 75.82 | g | |||
1959 | 53.65 | 51.47 | m | 60.42 | 69.80 | 76.45 | 87.47 | 89.14 | c | 81.87 | 81.80 | 71.71 | 57.17 | 47.90 | 70.67 | a | ||||||||||
1960 | 41.48 | 46.28 | 63.03 | 69.93 | 75.74 | 86.93 | 87.45 | 88.10 | 82.93 | 68.48 | 61.57 | 43.47 | a | 67.95 | ||||||||||||
1961 | 46.81 | 51.43 | 58.63 | a | 67.90 | 77.97 | a | 88.45 | a | 88.42 | 84.48 | 77.27 | 70.63 | a | 49.37 | 46.06 | 67.28 | |||||||||
1962 | 44.35 | 60.57 | 57.07 | c | 72.13 | 77.45 | 84.80 | 81.00 | 86.97 | 81.87 | 71.48 | 64.47 | 58.52 | 70.06 | ||||||||||||
1963 | 48.77 | 54.61 | 62.87 | 71.80 | 79.81 | 85.70 | 89.94 | 83.03 | 77.90 | 73.68 | 62.83 | 52.39 | 70.28 | |||||||||||||
1964 | 44.19 | 42.24 | 54.45 | 63.53 | 76.71 | ----- | z | 88.48 | 85.81 | 77.63 | 73.00 | 57.33 | 49.65 | 64.82 | a | |||||||||||
1965 | 50.17 | a | 48.07 | 54.55 | 66.70 | 74.29 | 82.30 | 85.87 | 84.32 | 76.23 | 73.19 | 62.27 | 49.29 | c | 67.27 | |||||||||||
1966 | 42.73 | a | 44.32 | 62.16 | 69.30 | 79.42 | 84.97 | 88.52 | 84.16 | 76.93 | 69.74 | 64.62 | d | 50.23 | 68.09 | |||||||||||
1967 | 49.71 | 54.32 | 65.52 | 68.50 | 74.23 | 80.87 | 85.48 | 81.94 | 78.33 | 71.90 | 61.20 | 43.13 | 67.93 | |||||||||||||
1968 | 45.42 | 53.24 | 55.06 | 62.37 | 74.68 | 86.23 | 84.26 | 80.13 | 79.00 | 72.48 | 55.07 | 46.03 | 66.16 | |||||||||||||
1969 | 52.19 | 51.32 | 50.84 | 69.70 | 75.81 | 84.20 | 86.42 | 85.03 | 77.93 | 67.03 | 54.50 | 51.52 | 67.21 | |||||||||||||
1970 | 44.74 | h | ----- | z | 54.69 | b | 64.50 | 77.58 | 82.50 | d | 85.61 | 83.95 | i | 77.81 | d | 65.13 | 62.29 | f | 53.93 | d | 70.22 | d | ||||
1971 | 51.94 | 53.79 | 64.90 | a | 65.14 | a | 74.84 | ----- | z | ----- | z | ----- | z | 78.53 | 69.26 | 61.73 | ----- | z | 65.02 | d | ||||||
1972 | 50.00 | a | 56.66 | 70.29 | 74.35 | j | 77.27 | a | 85.23 | 87.11 | c | 83.90 | a | 79.77 | 69.57 | a | 54.40 | 50.27 | a | 69.50 | a | |||||
1973 | 45.47 | a | 48.25 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 62.10 | 54.81 | 52.66 | h | |||
1974 | 49.42 | 54.86 | 65.27 | a | 68.70 | 81.60 | a | 90.30 | 86.08 | g | 81.48 | 74.76 | a | 64.39 | 56.93 | 46.12 | f | 68.77 | b | |||||||
1975 | 50.05 | j | 53.19 | g | 61.08 | g | 64.13 | 73.58 | 85.37 | 83.79 | b | 84.74 | 74.77 | 71.94 | 59.86 | a | 52.13 | h | 74.77 | d | ||||||
1976 | 53.21 | g | 59.54 | c | 60.29 | 67.41 | c | 76.13 | a | 85.48 | g | 86.85 | e | 83.53 | a | 76.35 | d | 64.83 | a | 55.11 | c | 48.64 | f | 70.00 | c | |
1977 | 48.16 | l | 54.79 | i | 56.62 | g | 66.96 | b | 75.89 | c | 85.96 | e | 84.17 | a | 85.42 | 80.07 | a | 71.29 | 59.18 | b | 55.41 | d | 73.82 | c | ||
1978 | 49.33 | g | 50.95 | g | 60.54 | e | 70.54 | b | 76.61 | c | 88.96 | c | 89.77 | 84.89 | c | ----- | z | 71.63 | a | 56.22 | c | ----- | z | 74.90 | d | |
1979 | 43.19 | d | 51.71 | 57.68 | c | 68.50 | 73.03 | a | 83.11 | b | 87.75 | c | 82.28 | b | 78.46 | b | 75.84 | 52.89 | b | 55.68 | f | 68.59 | a | |||
1980 | 52.33 | g | 54.93 | a | 57.76 | b | 66.83 | 74.19 | 91.66 | a | 91.13 | 85.40 | a | 79.63 | 68.26 | 57.61 | b | 55.22 | d | 71.15 | a | |||||
1981 | 51.38 | b | 58.19 | a | 57.87 | a | 71.17 | 77.14 | b | 88.38 | a | 85.68 | 83.42 | 78.07 | 67.52 | 62.86 | a | 56.69 | e | 69.86 | ||||||
1982 | 52.41 | d | 52.50 | b | 60.23 | a | 69.11 | c | 73.96 | e | 85.82 | b | 87.86 | c | 81.59 | b | 78.16 | e | 69.18 | i | 56.52 | i | 50.00 | l | 71.29 | c |
1983 | 50.80 | k | 53.38 | l | 61.05 | k | 62.30 | g | 74.43 | c | 85.23 | d | 86.81 | 83.03 | 80.83 | a | 67.68 | f | 58.67 | f | 52.43 | h | 82.07 | g | ||
1984 | 48.65 | k | 57.45 | i | 59.44 | f | 66.90 | a | 82.31 | b | 85.07 | b | 87.58 | 83.00 | c | 79.96 | e | 63.13 | a | 58.68 | b | 48.86 | c | 72.83 | c | |
1985 | 44.64 | i | 52.63 | i | 61.05 | j | 69.17 | a | 76.37 | a | 87.39 | b | ----- | z | 86.32 | 77.14 | h | 67.61 | 60.17 | a | 53.90 | b | 71.56 | e | ||
1986 | 59.06 | n | 61.70 | h | 61.85 | k | 70.07 | a | 75.80 | a | 81.63 | c | 83.20 | a | 85.53 | a | 74.89 | l | 66.32 | l | 55.87 | o | 48.76 | n | 79.25 | g |
1987 | 52.73 | t | 51.68 | i | 56.96 | h | 67.33 | f | 74.77 | e | 86.17 | f | 89.96 | g | 83.66 | b | 80.00 | m | 78.80 | p | 66.54 | q | ----- | z | 79.21 | j |
1988 | 48.28 | m | 52.79 | j | 65.62 | o | 64.73 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 61.60 | 51.08 | e | 59.14 | i | ||
1989 | 49.81 | 56.70 | a | 69.68 | 76.93 | 85.97 | 88.87 | 89.53 | a | 84.55 | 80.96 | b | 71.26 | 60.86 | a | 53.83 | b | 72.41 | ||||||||
1990 | 54.95 | l | 57.53 | i | 63.68 | i | 68.47 | 77.52 | 92.77 | 84.80 | f | 83.40 | f | 81.14 | a | 67.58 | e | 55.76 | a | 45.33 | g | 73.87 | f | |||
1991 | 44.16 | 54.82 | 56.81 | 69.53 | 81.13 | 87.69 | a | 86.94 | 84.20 | a | 76.45 | a | 71.34 | b | 54.74 | g | 44.03 | a | 68.83 | a | ||||||
1992 | 43.39 | m | 49.71 | a | 58.77 | 70.43 | 70.32 | 84.31 | a | 87.48 | 85.29 | 82.03 | a | 75.61 | 52.43 | 41.83 | m | 71.64 | b | |||||||
1993 | 49.21 | l | 50.72 | j | 61.63 | l | 68.05 | i | 78.18 | n | 84.50 | n | 84.32 | f | 73.06 | 69.77 | 63.52 | j | ----- | z | ----- | z | 71.42 | j | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 47.40 | 52.25 | 58.50 | 67.30 | 76.07 | 85.86 | 86.06 | 83.34 | 78.16 | 69.07 | 57.73 | 48.73 | 67.72 | |||||||||||||
S.D. | 4.67 | 3.99 | 5.03 | 3.57 | 3.11 | 2.87 | 2.75 | 2.94 | 3.19 | 3.86 | 4.24 | 5.37 | 2.02 | |||||||||||||
SKEW | -0.34 | -0.05 | -0.19 | -0.17 | 0.32 | -0.23 | -0.96 | -1.63 | -0.59 | 0.22 | -0.12 | -0.27 | 0.47 | |||||||||||||
MAX | 55.10 | 61.09 | 70.29 | 76.93 | 85.97 | 92.77 | 91.13 | 88.52 | 87.97 | 79.94 | 65.52 | 58.52 | 72.41 | |||||||||||||
MIN | 36.71 | 42.24 | 43.21 | 59.73 | 68.84 | 76.67 | 76.77 | 72.33 | 66.35 | 61.39 | 49.37 | 35.12 | 64.41 | |||||||||||||
YRS | 57 | 62 | 65 | 67 | 68 | 65 | 64 | 67 | 63 | 61 | 60 | 57 | 31 |