YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1903 | 44.95 | 43.18 | 51.56 | 58.23 | 67.65 | 77.00 | 80.02 | 83.40 | 72.65 | 64.90 | 56.22 | 48.35 | 62.34 | |||||||||||||
1904 | 50.16 | b | 59.26 | 61.03 | 66.38 | 73.40 | 79.80 | 82.16 | 82.52 | 72.92 | 62.60 | 59.27 | 51.89 | 66.78 | ||||||||||||
1905 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1906 | 49.95 | 59.79 | 63.69 | 57.17 | 64.15 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 55.50 | 45.79 | 56.58 | e | |||||||
1907 | 48.02 | ----- | z | ----- | z | ----- | z | ----- | z | 78.96 | p | 84.24 | 80.94 | 73.25 | 63.53 | 52.40 | 48.35 | 64.39 | e | |||||||
1908 | 46.11 | 47.20 | a | 54.13 | 62.45 | 64.95 | 74.78 | 85.63 | 81.79 | 72.14 | a | 58.27 | 52.57 | 42.33 | a | 61.86 | ||||||||||
1909 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1910 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1911 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1912 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1913 | 44.87 | e | 49.91 | 54.76 | 61.33 | 64.92 | 73.80 | 84.13 | 83.48 | 79.45 | 72.56 | 64.43 | 52.35 | 65.50 | ||||||||||||
1914 | 49.35 | 50.77 | 57.92 | 61.72 | 70.40 | 76.70 | 83.95 | 83.73 | 75.75 | 65.55 | 54.95 | 40.95 | 64.31 | |||||||||||||
1915 | 42.03 | 46.88 | 56.20 | a | 63.40 | 66.52 | 77.95 | 83.92 | 82.97 | 74.50 | 65.90 | 52.62 | 46.02 | 63.24 | ||||||||||||
1916 | 43.15 | 50.07 | 59.66 | 64.52 | 64.73 | 77.18 | 82.61 | 78.73 | 71.75 | 57.45 | 50.63 | 41.68 | 61.85 | |||||||||||||
1917 | 42.18 | 48.16 | c | 49.65 | 59.73 | 64.18 | 79.75 | ----- | z | 81.77 | 73.32 | 66.48 | 52.30 | 47.94 | 60.50 | a | ||||||||||
1918 | 45.31 | 46.25 | 52.90 | 57.28 | 63.71 | 83.32 | 81.66 | 79.32 | 74.30 | 65.13 | 48.92 | 40.72 | f | 63.46 | a | |||||||||||
1919 | 42.18 | 47.45 | 49.73 | 62.00 | 73.33 | a | 79.33 | 84.87 | 82.58 | 73.14 | a | 56.63 | 48.42 | 42.61 | 61.86 | |||||||||||
1920 | 46.19 | 49.33 | 50.21 | 60.52 | 70.44 | 76.70 | 84.74 | 81.60 | 71.67 | 58.81 | 50.73 | 43.40 | 62.03 | |||||||||||||
1921 | 42.89 | 49.64 | 55.95 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 49.49 | i | |||
1922 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1923 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1924 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1925 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1926 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1927 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | ----- | 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 | 66.89 | c | 72.06 | 78.77 | 85.82 | 85.85 | 74.82 | 63.13 | 56.18 | 50.02 | 70.39 | c | ||||||||
1940 | 49.55 | 50.50 | 58.11 | 63.28 | 74.37 | 83.27 | 84.26 | 84.89 | 74.28 | 66.69 | 51.95 | 49.79 | 65.91 | |||||||||||||
1941 | 48.10 | 53.04 | 55.06 | 58.18 | 71.50 | 75.40 | 84.47 | 80.19 | 71.50 | 60.23 | 53.92 | 46.19 | 63.15 | |||||||||||||
1942 | 47.03 | 47.05 | 53.87 | 60.42 | 67.21 | 79.20 | 88.02 | 84.18 | 74.37 | 65.69 | 56.47 | 49.56 | 64.42 | |||||||||||||
1943 | 46.77 | 52.27 | 58.13 | 64.82 | 72.08 | 74.18 | 84.44 | 83.18 | 79.30 | 67.58 | 52.85 | 46.42 | 65.17 | |||||||||||||
1944 | 45.15 | 46.72 | 53.87 | 58.13 | 68.37 | 71.50 | 81.56 | 82.27 | 77.53 | 66.65 | 52.52 | 46.91 | b | 62.60 | ||||||||||||
1945 | 46.08 | 50.86 | 51.37 | 62.43 | a | 68.73 | a | 77.25 | 87.42 | 85.11 | 82.65 | 72.06 | 54.98 | 47.32 | 65.52 | |||||||||||
1946 | 47.94 | 48.64 | 56.90 | 68.14 | a | 71.53 | 79.41 | a | 85.15 | 84.66 | 76.63 | 61.03 | 53.53 | a | 50.03 | 65.30 | ||||||||||
1947 | 45.77 | 52.98 | 58.39 | 64.73 | 74.39 | 77.45 | 83.68 | 80.05 | 80.20 | 66.71 | 49.63 | 45.42 | 64.95 | |||||||||||||
1948 | 48.37 | a | 48.95 | i | 52.50 | y | 62.28 | 67.45 | 76.57 | 80.69 | 79.40 | 74.82 | 63.11 | 49.33 | 40.10 | b | 64.21 | b | ||||||||
1949 | 30.72 | a | 42.23 | 49.52 | 62.07 | 69.11 | 80.64 | a | 84.24 | 80.20 | a | 77.45 | 63.26 | 58.68 | 44.46 | d | 61.88 | |||||||||
1950 | 43.13 | 52.39 | 57.55 | 66.57 | 70.88 | a | 77.32 | 85.50 | a | 83.18 | 75.31 | c | 68.62 | c | ----- | z | 53.18 | 66.69 | a | |||||||
1951 | 47.16 | 50.16 | 55.37 | a | 62.93 | 72.64 | f | 78.57 | 85.81 | 80.74 | j | 78.93 | 63.58 | a | 50.97 | 43.95 | 61.74 | b | ||||||||
1952 | 42.44 | 50.59 | 51.50 | 62.20 | 73.16 | 74.15 | 85.06 | 85.11 | 77.15 | 70.40 | 49.90 | 44.42 | 63.84 | |||||||||||||
1953 | 49.98 | 50.39 | i | 56.02 | 63.50 | o | 63.15 | a | 76.02 | f | 87.43 | b | 81.60 | a | 78.05 | 65.55 | a | 55.82 | b | 45.25 | c | 64.76 | c | |||
1954 | 47.37 | a | 55.26 | a | 52.15 | a | 67.38 | a | 74.29 | 76.77 | 87.13 | 79.56 | 76.05 | 65.93 | b | 56.98 | h | 45.15 | 66.09 | a | ||||||
1955 | 43.00 | 45.26 | a | 54.63 | d | 60.48 | f | 68.73 | 76.73 | 82.39 | 84.50 | 77.65 | 66.85 | 51.90 | a | 49.50 | b | 63.74 | a | |||||||
1956 | 49.47 | 46.43 | 55.45 | a | 59.90 | a | 68.66 | 79.71 | b | 83.21 | 80.15 | 79.30 | 62.68 | a | 51.97 | 47.39 | c | 63.69 | ||||||||
1957 | 43.65 | 55.77 | 57.44 | 62.66 | b | 66.63 | a | 81.75 | 84.83 | a | 83.11 | 80.70 | o | 61.23 | g | 50.32 | 46.23 | 63.24 | b | |||||||
1958 | 47.53 | a | 54.26 | a | 50.50 | 60.86 | b | 74.03 | a | 77.61 | c | 83.42 | 86.19 | 77.30 | 68.33 | a | 53.35 | 49.29 | 65.22 | |||||||
1959 | 48.74 | 47.74 | a | 58.83 | a | 68.25 | b | 67.63 | 82.18 | 89.71 | 83.36 | b | 75.67 | 68.37 | a | 54.03 | 46.28 | b | 65.90 | |||||||
1960 | 42.23 | 48.09 | 59.08 | 64.18 | 70.28 | a | 83.73 | 86.65 | 83.15 | 80.18 | 65.35 | a | 53.08 | 45.48 | b | 65.12 | ||||||||||
1961 | 47.18 | 51.91 | 56.52 | 64.50 | c | 68.24 | 83.32 | 88.11 | 83.66 | 74.00 | a | 65.00 | 51.75 | 44.76 | 64.91 | |||||||||||
1962 | 45.95 | 50.07 | 51.32 | a | 67.53 | 67.15 | 79.28 | 83.85 | 84.24 | h | 78.90 | j | 66.66 | 56.27 | 47.88 | a | 61.60 | b | ||||||||
1963 | 43.53 | a | 57.77 | 53.53 | 56.63 | 71.24 | 74.57 | 84.06 | 81.81 | b | 76.67 | 67.81 | ----- | z | 45.56 | 64.84 | a | |||||||||
1964 | 44.05 | 47.26 | 51.95 | 59.77 | 67.75 | a | 76.38 | 85.13 | 83.85 | 74.78 | 71.39 | 49.47 | 49.52 | 63.44 | ||||||||||||
1965 | 47.73 | 50.66 | 54.60 | a | 59.67 | a | ----- | z | ----- | z | ----- | z | ----- | z | 69.89 | u | 68.21 | 54.90 | 44.00 | 54.25 | e | |||||
1966 | 42.89 | 45.86 | 56.34 | 64.28 | 71.40 | 77.08 | 82.45 | ----- | z | 74.47 | a | 63.68 | 53.42 | 45.77 | 61.60 | a | ||||||||||
1967 | 46.73 | 51.41 | 56.85 | 52.22 | 69.00 | 74.02 | 86.65 | 86.60 | 76.70 | 67.21 | 57.45 | a | 42.05 | 63.91 | ||||||||||||
1968 | 45.56 | 55.69 | 55.75 | a | 59.75 | 69.69 | 79.36 | a | 84.23 | 78.31 | 75.77 | 64.90 | 54.40 | 40.92 | 63.69 | |||||||||||
1969 | 49.17 | a | 46.16 | 53.63 | a | 61.62 | 71.62 | a | 76.00 | 84.32 | 85.58 | 78.43 | 61.45 | 53.27 | 47.32 | 64.05 | ||||||||||
1970 | 47.34 | 52.30 | 55.15 | 57.10 | 69.98 | 78.02 | 85.79 | 85.26 | 73.05 | 62.45 | b | 54.28 | 43.85 | 63.71 | ||||||||||||
1971 | 45.52 | 50.14 | 55.60 | 58.77 | 65.34 | 76.32 | 85.05 | 85.77 | 76.17 | 60.35 | 51.40 | a | 42.12 | a | 62.71 | |||||||||||
1972 | 42.50 | 51.12 | 61.89 | 61.87 | 69.52 | 77.95 | 86.19 | 81.92 | 73.95 | 61.27 | 50.28 | 41.45 | a | 63.33 | ||||||||||||
1973 | 42.52 | 48.91 | 50.89 | 60.02 | c | 71.81 | 80.12 | 84.32 | 82.63 | 73.70 | 63.87 | 52.82 | 46.53 | 63.18 | ||||||||||||
1974 | 44.79 | 49.79 | 57.64 | b | 59.29 | a | 70.63 | 80.92 | 83.90 | 81.26 | b | 79.33 | 64.95 | 52.08 | 43.68 | 64.02 | ||||||||||
1975 | 45.42 | 48.69 | a | 53.31 | 54.08 | 68.92 | 77.80 | 83.13 | 80.37 | 77.27 | 62.66 | 50.86 | a | 46.95 | 62.45 | |||||||||||
1976 | 46.38 | a | 51.21 | 53.28 | a | 58.41 | a | 72.45 | a | 77.32 | 83.90 | 77.60 | b | 74.22 | 64.68 | 55.00 | 42.71 | 63.10 | ||||||||
1977 | 44.66 | 51.25 | 49.37 | 63.13 | 62.19 | 79.20 | 83.82 | 82.42 | 75.17 | a | 66.94 | 54.35 | 51.35 | 63.66 | ||||||||||||
1978 | 47.39 | 50.82 | 57.29 | 58.29 | a | 68.80 | a | 78.73 | 83.29 | 81.82 | 73.12 | 69.23 | 50.67 | 42.03 | 63.46 | |||||||||||
1979 | 43.29 | 47.46 | 53.60 | 61.50 | 70.48 | 79.58 | 83.45 | 80.71 | 80.38 | 67.53 | 52.22 | 48.73 | 64.08 | |||||||||||||
1980 | 51.42 | 53.95 | 53.24 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 52.87 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 45.66 | 50.20 | 54.96 | 61.56 | 69.19 | 78.09 | 84.52 | 82.50 | 75.82 | 65.00 | 53.24 | 46.06 | 63.85 | |||||||||||||
S.D. | 3.23 | 3.64 | 3.29 | 3.51 | 3.15 | 2.67 | 1.88 | 2.20 | 2.64 | 3.51 | 2.95 | 3.18 | 1.29 | |||||||||||||
SKEW | -1.64 | 0.51 | 0.29 | -0.14 | -0.29 | 0.12 | 0.25 | -0.16 | 0.42 | -0.21 | 1.17 | 0.18 | 0.21 | |||||||||||||
MAX | 51.42 | 59.79 | 63.69 | 68.25 | 74.39 | 83.73 | 89.71 | 86.60 | 82.65 | 72.56 | 64.43 | 53.18 | 66.78 | |||||||||||||
MIN | 30.72 | 42.23 | 49.37 | 52.22 | 62.19 | 71.50 | 80.02 | 77.60 | 71.50 | 56.63 | 48.42 | 40.10 | 61.85 | |||||||||||||
YRS | 55 | 52 | 53 | 51 | 51 | 50 | 51 | 49 | 50 | 52 | 51 | 53 | 38 |