YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1899 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 83.88 | 63.32 | 53.92 | 44.27 | 61.35 | h | ||||
1900 | 48.18 | 49.66 | 63.47 | 58.72 | 74.73 | 83.00 | 88.92 | 84.20 | h | 75.02 | 63.77 | 52.47 | 42.12 | j | 65.79 | b | ||||||||||
1901 | 41.10 | 45.73 | 55.68 | 64.05 | a | 74.32 | 78.78 | 86.37 | 84.63 | 78.83 | ----- | z | ----- | z | ----- | z | 67.72 | c | ||||||||
1902 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1903 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1904 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1905 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1906 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1907 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 46.92 | 46.92 | k | |
1908 | 44.94 | 46.97 | 56.18 | 62.27 | 65.76 | 76.20 | 82.42 | 80.53 | 72.98 | 58.35 | 49.98 | 41.31 | 61.49 | |||||||||||||
1909 | 47.35 | 45.84 | 51.61 | 60.88 | 68.34 | 79.87 | 81.61 | 79.05 | 73.03 | 63.94 | 50.70 | ----- | z | 63.84 | a | |||||||||||
1910 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1911 | ----- | z | ----- | z | 56.48 | 62.83 | 70.71 | 79.23 | 84.44 | 83.56 | 77.70 | 63.23 | 49.97 | ----- | z | 69.79 | c | |||||||||
1912 | 43.03 | a | 48.98 | 55.91 | h | 57.36 | a | 65.74 | 76.47 | a | 77.34 | 80.38 | b | 72.04 | b | 61.38 | b | 51.66 | a | 38.84 | 61.20 | a | ||||
1913 | 38.57 | b | 44.88 | 51.94 | 64.11 | c | 73.13 | a | 79.50 | 83.72 | a | 81.98 | a | 73.40 | 62.72 | a | 53.40 | a | 41.57 | a | 62.41 | |||||
1914 | 46.00 | e | 51.39 | a | 58.46 | d | 64.50 | 72.82 | 79.52 | 79.18 | 86.65 | 81.27 | ----- | z | ----- | z | 41.89 | 66.17 | b | |||||||
1915 | 41.39 | 47.89 | 55.29 | 63.28 | 66.81 | 77.90 | 82.67 | p | 82.33 | a | 72.75 | 65.05 | 51.17 | 43.74 | 60.69 | a | ||||||||||
1916 | 43.32 | 51.69 | 58.56 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 50.03 | 39.80 | f | 50.90 | h | ||||
1917 | 37.02 | a | 46.34 | 49.35 | a | 58.80 | b | 64.84 | b | 78.88 | 83.82 | 78.37 | a | ----- | z | ----- | z | ----- | z | ----- | z | 62.18 | d | |||
1918 | ----- | z | 52.88 | l | 56.03 | 61.90 | 66.76 | 82.50 | 80.03 | 77.82 | 75.74 | e | ----- | z | ----- | z | ----- | z | 71.54 | e | ||||||
1919 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 44.41 | h | ----- | z |
1920 | 45.74 | b | 50.43 | 55.03 | 59.30 | 71.80 | c | 79.37 | 84.85 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 63.79 | e | |||||
1921 | ----- | z | ----- | z | ----- | z | ----- | z | 69.98 | 79.76 | a | 84.27 | 78.10 | 75.30 | 67.52 | a | 54.40 | 45.34 | 69.33 | d | ||||||
1922 | 39.97 | a | 47.08 | b | 52.48 | a | 58.31 | a | 70.42 | a | 82.17 | 85.40 | 81.23 | ----- | z | 69.40 | 48.12 | b | ----- | z | 63.46 | b | ||||
1923 | 47.03 | a | 43.68 | 53.13 | 60.90 | ----- | z | ----- | z | 86.48 | 79.50 | ----- | z | ----- | z | ----- | z | 43.02 | c | 59.11 | e | |||||
1924 | 39.02 | 50.41 | 48.45 | b | 59.93 | 71.81 | 80.77 | 80.29 | 81.55 | 71.53 | 59.77 | 49.09 | b | 36.03 | 60.72 | |||||||||||
1925 | 35.28 | a | 48.46 | 52.57 | a | 60.68 | h | 70.88 | e | 73.22 | 78.95 | a | 73.47 | a | 67.80 | 56.02 | 44.62 | 40.65 | a | 58.36 | a | |||||
1926 | 39.57 | a | 48.57 | 54.13 | 60.79 | a | 66.56 | 77.47 | 80.48 | 78.68 | 71.97 | 60.30 | a | 51.05 | 40.53 | 60.84 | ||||||||||
1927 | 46.37 | 49.09 | 53.18 | 63.63 | 71.57 | h | 78.98 | 84.71 | 79.17 | g | 73.64 | a | 66.55 | b | 55.60 | 41.02 | 61.28 | b | ||||||||
1928 | 44.79 | 49.29 | e | 63.04 | r | 64.00 | 75.35 | e | 82.03 | l | 85.77 | e | 83.65 | e | ----- | z | 60.43 | d | 44.96 | e | 41.08 | m | 63.53 | d | ||
1929 | 41.27 | a | 45.08 | i | 55.07 | j | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 68.10 | b | 51.25 | 53.45 | a | 53.52 | h | |
1930 | 44.37 | e | 52.65 | a | 56.34 | b | 67.50 | c | 65.44 | 84.00 | a | 83.48 | i | 81.55 | k | 77.27 | 63.32 | 51.53 | 37.39 | 59.98 | b | |||||
1931 | 39.23 | a | 48.34 | 55.67 | a | 65.33 | 70.62 | a | 77.68 | e | 82.21 | j | 80.39 | h | 77.68 | e | 63.47 | l | 46.06 | d | 35.29 | g | 60.08 | d | ||
1932 | 33.97 | 44.17 | b | 52.89 | c | 61.59 | h | 66.58 | 75.44 | c | 82.14 | i | 79.68 | i | 73.04 | e | 58.27 | a | 47.76 | g | 33.14 | i | 57.77 | e | ||
1933 | 33.17 | d | 38.10 | g | 52.00 | f | 57.69 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 45.88 | ----- | z | 39.52 | j | |
1934 | 36.48 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 36.48 | k |
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 | 81.82 | 79.02 | 79.15 | 65.92 | a | 48.12 | 44.13 | 66.36 | f | |||||
1957 | 44.16 | 53.77 | 56.37 | 60.35 | 65.68 | 80.18 | 84.03 | 80.65 | 76.30 | 62.45 | 47.32 | 46.00 | 63.10 | |||||||||||||
1958 | 44.24 | 51.36 | 50.18 | a | 59.93 | 73.24 | 81.32 | 84.31 | 83.79 | 75.08 | 67.11 | 51.07 | 47.95 | 64.13 | ||||||||||||
1959 | 44.73 | 47.30 | 57.39 | 66.77 | 70.61 | 82.73 | 87.06 | 79.02 | ----- | z | 63.97 | m | 48.58 | 41.32 | 62.55 | b | ||||||||||
1960 | 35.58 | 42.91 | 55.40 | 61.80 | 68.48 | 80.12 | 82.98 | 77.54 | q | 65.02 | f | 53.40 | a | 49.10 | t | 32.03 | m | 60.09 | d | |||||||
1961 | 33.69 | e | 42.77 | d | 46.89 | 55.86 | i | 63.66 | c | 75.93 | a | 79.12 | a | 75.04 | c | 66.16 | b | 58.20 | f | 40.80 | j | 30.08 | e | 57.04 | c | |
1962 | 34.55 | 41.67 | d | 44.29 | b | 61.97 | 63.07 | c | 72.48 | a | 77.82 | 77.21 | e | 70.96 | b | 59.77 | c | 49.17 | 37.94 | f | 59.36 | a | ||||
1963 | 32.26 | b | 47.10 | c | 45.95 | k | 58.25 | h | 72.83 | b | 77.77 | b | 87.71 | 81.98 | b | 76.57 | b | 69.31 | b | 53.12 | 41.84 | b | 64.05 | b | ||
1964 | 41.43 | a | 43.80 | b | 50.26 | 59.73 | 68.86 | b | 77.47 | 85.23 | a | 80.28 | b | 73.93 | b | 68.38 | c | 47.95 | t | 43.66 | 63.00 | a | ||||
1965 | 43.95 | a | 46.84 | 50.38 | a | 57.34 | b | 64.98 | a | 72.98 | a | 80.96 | g | 80.48 | b | 69.90 | ----- | z | ----- | z | 40.81 | b | 58.63 | c | ||
1966 | 37.98 | 39.54 | 55.36 | b | 62.53 | a | 71.63 | 77.80 | b | 80.58 | a | 81.82 | f | 74.63 | c | 60.73 | 50.06 | e | 39.72 | a | 59.14 | a | ||||
1967 | 39.27 | a | 46.52 | d | 54.73 | 54.00 | a | 66.53 | 72.75 | d | 81.63 | a | 80.12 | b | 70.50 | e | 61.94 | 51.39 | c | 32.68 | 59.34 | |||||
1968 | 35.45 | a | 48.07 | 52.31 | 56.80 | b | 72.13 | 81.87 | 84.64 | b | 79.16 | c | 77.50 | b | 65.56 | e | 56.19 | a | 38.62 | c | 62.36 | |||||
1969 | 46.30 | a | 44.84 | 50.88 | a | 63.41 | a | 72.74 | f | 78.28 | a | 84.72 | f | 82.90 | a | 74.67 | 59.13 | d | 47.17 | o | 53.96 | r | 62.55 | d | ||
1970 | 47.54 | h | 52.93 | 53.40 | a | 57.69 | c | 69.83 | e | 78.90 | 81.16 | 81.83 | b | 72.59 | b | 61.31 | b | 53.33 | a | 43.13 | 64.19 | a | ||||
1971 | 41.82 | 48.29 | 54.65 | a | 60.98 | 66.34 | 78.02 | a | 85.31 | 79.85 | a | 72.85 | 59.13 | a | 48.88 | 40.23 | a | 61.36 | ||||||||
1972 | 41.97 | 50.43 | a | 62.32 | 63.38 | 70.34 | 77.62 | 85.20 | a | 80.02 | b | 73.32 | 60.18 | 46.02 | 38.42 | 62.43 | ||||||||||
1973 | 36.40 | 45.70 | a | 47.63 | 57.75 | 70.44 | 77.32 | 82.65 | 80.48 | 73.07 | a | 63.66 | 51.08 | 43.32 | 60.79 | |||||||||||
1974 | 39.90 | 45.16 | 56.95 | 59.93 | 72.68 | 83.63 | 81.05 | 81.53 | 76.08 | 63.63 | 47.33 | 38.07 | a | 62.16 | ||||||||||||
1975 | 39.00 | ----- | z | 49.65 | 53.35 | 65.98 | 75.85 | 81.56 | 79.74 | 74.75 | 61.90 | 47.85 | 39.94 | 60.87 | a | |||||||||||
1976 | 40.23 | 47.74 | 50.08 | 58.22 | 69.76 | 76.05 | a | 80.10 | 77.62 | a | 70.93 | 58.19 | b | 49.08 | 38.44 | 59.70 | ||||||||||
1977 | 37.06 | 46.88 | 48.19 | 60.72 | 62.29 | 77.25 | 80.52 | 79.35 | 73.58 | 63.19 | 49.48 | 45.32 | 60.32 | |||||||||||||
1978 | 41.50 | 43.32 | 52.56 | 56.83 | 64.27 | 77.35 | 80.50 | 77.71 | 70.08 | 63.48 | 46.41 | a | 33.31 | 58.95 | ||||||||||||
1979 | 33.35 | 38.68 | 48.30 | a | 57.50 | 65.00 | 74.00 | 79.85 | 74.85 | 75.00 | 62.76 | 43.30 | 38.45 | 57.59 | ||||||||||||
1980 | 40.31 | 45.53 | 46.52 | 56.85 | 61.86 | b | 74.70 | 79.97 | 77.83 | a | 71.57 | 59.34 | c | 47.43 | b | 43.53 | a | 58.79 | ||||||||
1981 | 48.07 | d | 50.98 | 54.70 | a | 67.42 | 71.39 | 83.63 | 85.97 | 84.00 | b | 76.88 | 61.98 | b | 55.40 | a | 46.48 | 65.58 | ||||||||
1982 | 42.52 | 47.44 | a | 54.08 | a | 62.15 | 70.05 | 79.66 | a | 84.05 | 81.36 | c | 75.93 | 60.22 | a | 49.80 | 42.78 | a | 62.50 | |||||||
1983 | 44.32 | 49.92 | b | 53.61 | 57.73 | 71.06 | 80.07 | a | 83.53 | 81.83 | d | 79.88 | a | 67.02 | b | 54.52 | b | 47.84 | c | 64.28 | ||||||
1984 | 44.52 | 48.66 | 56.39 | 57.90 | a | 78.20 | c | 81.20 | b | 83.67 | b | 82.90 | a | 79.16 | b | 61.02 | a | 52.96 | d | 43.79 | b | 64.20 | ||||
1985 | 41.84 | b | 45.23 | b | 55.10 | b | 67.21 | b | 74.50 | b | 83.32 | 86.27 | c | 85.92 | a | 72.48 | b | 64.56 | 51.31 | c | 43.30 | c | 64.25 | |||
1986 | 49.60 | a | 53.19 | a | 59.76 | b | 63.55 | a | 73.81 | b | 83.31 | a | 83.97 | a | 85.00 | a | 74.20 | b | 61.58 | e | 54.52 | i | 44.52 | f | 68.80 | b |
1987 | 44.15 | g | 48.74 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 48.74 | k |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 41.00 | 47.39 | 53.51 | 60.88 | 69.26 | 78.71 | 82.94 | 80.50 | 74.43 | 62.57 | 50.11 | 41.65 | 61.70 | |||||||||||||
S.D. | 4.43 | 3.33 | 3.93 | 3.35 | 3.77 | 3.01 | 2.74 | 2.79 | 3.38 | 3.46 | 3.07 | 4.31 | 2.09 | |||||||||||||
SKEW | -0.17 | -0.35 | 0.04 | 0.06 | -0.01 | -0.16 | -0.04 | -0.12 | 0.28 | -0.03 | -0.06 | -0.20 | -0.07 | |||||||||||||
MAX | 49.60 | 53.77 | 63.47 | 67.50 | 78.20 | 84.00 | 88.92 | 86.65 | 83.88 | 69.40 | 56.19 | 53.45 | 65.58 | |||||||||||||
MIN | 32.26 | 38.68 | 44.29 | 53.35 | 61.86 | 72.48 | 77.34 | 73.47 | 66.16 | 53.40 | 43.30 | 30.08 | 57.59 | |||||||||||||
YRS | 53 | 51 | 50 | 48 | 50 | 51 | 48 | 46 | 48 | 46 | 45 | 42 | 22 |