YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1909 | 35.86 | c | 45.18 | 49.81 | 54.45 | a | 58.93 | c | 68.73 | 68.94 | 71.03 | 68.73 | 57.58 | 48.77 | 38.68 | 55.56 | ||||||||||
1910 | 40.55 | 41.37 | a | 53.71 | 56.00 | b | 64.77 | 64.53 | 71.16 | 66.68 | 63.12 | f | 55.42 | 46.07 | 44.55 | 54.98 | a | |||||||||
1911 | 39.94 | 42.72 | c | 52.10 | 54.07 | 58.81 | 64.43 | 73.68 | 68.19 | 62.20 | 58.47 | n | 47.27 | 42.65 | 55.09 | a | ||||||||||
1912 | 45.17 | b | 46.90 | 49.84 | 53.80 | 65.29 | 67.90 | a | 71.10 | 66.87 | 65.52 | a | 54.77 | 49.00 | 43.74 | 56.66 | ||||||||||
1913 | 39.19 | 43.61 | 45.39 | 54.13 | 58.35 | 65.80 | 70.32 | 72.45 | 65.80 | 54.71 | 48.30 | 40.28 | f | 56.19 | a | |||||||||||
1914 | 47.66 | b | 43.39 | 47.54 | e | 60.97 | a | 67.45 | 66.77 | d | ----- | z | 70.63 | a | 60.80 | 59.26 | 53.17 | a | ----- | z | 57.76 | b | ||||
1915 | 46.26 | d | 51.89 | 58.84 | 63.27 | 65.00 | a | 68.73 | 73.26 | 76.90 | 65.77 | 59.74 | 46.33 | 48.10 | 60.34 | |||||||||||
1916 | 36.94 | 47.59 | 49.19 | 56.53 | 59.81 | 67.70 | 69.55 | 73.48 | 67.27 | 58.10 | 49.63 | 41.84 | 56.47 | |||||||||||||
1917 | 43.35 | 43.68 | 49.06 | 53.17 | 59.97 | 66.33 | 74.81 | 76.35 | 66.13 | 58.58 | 52.93 | 46.35 | 57.56 | |||||||||||||
1918 | 45.32 | 41.50 | 48.23 | 59.10 | ----- | z | 72.17 | 72.68 | 72.32 | 72.07 | 58.68 | 49.20 | 44.68 | 57.81 | a | |||||||||||
1919 | 45.93 | a | 46.68 | 52.94 | 59.90 | 64.52 | ----- | z | ----- | z | ----- | z | 68.66 | a | 53.70 | d | 45.50 | 38.35 | 52.91 | c | ||||||
1920 | 37.32 | 37.62 | 43.32 | 44.80 | 53.90 | 61.57 | g | 71.16 | 70.94 | 61.07 | ----- | z | 49.43 | 47.32 | 51.69 | b | ||||||||||
1921 | 45.96 | g | 48.96 | b | 51.77 | 56.40 | 63.74 | 69.93 | 71.81 | 73.00 | 66.97 | 61.68 | 51.87 | 45.74 | 60.17 | a | ||||||||||
1922 | 41.90 | 46.32 | 49.52 | 56.33 | 66.94 | 74.14 | a | 75.00 | 72.68 | 70.73 | 61.32 | 51.83 | 43.42 | 59.18 | ||||||||||||
1923 | 47.37 | d | 45.21 | 52.42 | 61.07 | 63.84 | 70.72 | a | 76.03 | a | 75.80 | a | 70.30 | 65.90 | a | 54.03 | 48.19 | 60.91 | ||||||||
1924 | 45.57 | a | 53.31 | 53.59 | b | 58.20 | e | 69.71 | j | 71.87 | g | 72.71 | c | 72.79 | b | 71.62 | d | 60.68 | 51.27 | 43.77 | a | 58.35 | b | |||
1925 | 47.87 | a | 50.75 | 52.39 | 60.13 | 69.06 | 71.20 | 76.29 | 71.84 | 68.77 | 59.45 | 51.90 | 50.94 | 60.88 | ||||||||||||
1926 | 46.52 | 51.50 | 58.37 | a | 65.50 | 64.58 | 72.73 | 77.16 | 73.32 | 67.00 | 61.81 | 54.93 | 45.03 | 61.54 | ||||||||||||
1927 | 43.90 | 50.43 | 49.94 | 57.30 | 59.03 | 70.03 | 74.39 | 75.16 | 64.97 | 60.00 | 50.73 | 42.77 | 58.22 | |||||||||||||
1928 | 45.68 | 48.48 | 55.03 | 56.20 | 67.74 | 67.87 | 74.68 | 71.94 | 67.53 | 57.16 | 51.43 | 45.63 | a | 59.11 | ||||||||||||
1929 | 38.77 | a | 41.04 | 50.97 | 54.50 | 62.87 | 66.87 | 73.93 | c | 74.32 | 71.17 | 64.63 | d | 50.73 | 46.97 | a | 58.06 | |||||||||
1930 | 38.35 | 49.93 | 53.67 | a | 61.10 | 62.42 | 67.07 | 72.45 | 75.50 | a | 66.87 | 58.20 | a | 50.07 | a | 47.58 | 58.60 | |||||||||
1931 | 50.77 | 51.33 | a | 54.32 | ----- | z | ----- | z | 70.20 | 77.06 | 77.00 | a | 67.52 | a | 60.86 | b | 48.28 | a | 45.83 | b | 60.32 | b | ||||
1932 | 42.90 | a | 46.96 | a | 53.10 | b | 60.67 | 65.52 | b | 75.14 | a | 72.07 | a | 76.19 | j | 72.67 | 62.67 | a | 54.03 | 43.29 | 59.00 | a | ||||
1933 | 43.61 | 43.64 | 53.23 | 60.90 | 61.83 | a | 69.38 | a | 74.39 | 76.71 | 64.86 | a | 61.90 | b | 50.80 | 48.74 | 59.17 | |||||||||
1934 | 50.13 | 56.07 | 60.97 | a | 68.00 | 68.65 | 73.60 | 73.32 | 76.71 | 67.67 | 63.10 | 53.72 | a | 47.39 | 63.28 | |||||||||||
1935 | 46.32 | 52.21 | 49.90 | 59.63 | 67.16 | 71.37 | 74.94 | 74.19 | 72.47 | 58.74 | 48.97 | 49.29 | 60.43 | |||||||||||||
1936 | 48.35 | 41.00 | 51.16 | 62.60 | 69.61 | 72.43 | 75.71 | 77.65 | 70.00 | a | 63.45 | 53.30 | 47.77 | 61.09 | ||||||||||||
1937 | 35.35 | 46.32 | 57.03 | 56.30 | 67.42 | 73.70 | 75.90 | 74.19 | 70.63 | 64.81 | 53.37 | 48.74 | 60.31 | |||||||||||||
1938 | 47.48 | 51.32 | 54.07 | a | 63.10 | 67.63 | a | 73.40 | 78.97 | 74.52 | 73.97 | 62.81 | 50.40 | 47.97 | 62.14 | |||||||||||
1939 | 48.32 | 45.96 | 54.06 | 64.10 | 67.48 | 67.74 | c | 77.19 | 77.65 | 69.53 | 60.65 | 57.62 | a | 51.55 | 61.82 | |||||||||||
1940 | 49.43 | a | 51.83 | 56.65 | 62.63 | 69.23 | 74.83 | 75.23 | 74.73 | a | 72.83 | 63.65 | 49.77 | 50.37 | a | 62.60 | ||||||||||
1941 | 50.43 | a | 55.04 | 61.58 | 64.70 | 65.68 | 71.67 | 80.71 | 75.39 | 67.11 | b | 62.03 | 55.33 | 48.19 | 63.15 | |||||||||||
1942 | 48.23 | 49.04 | 54.69 | b | 60.73 | 64.90 | 67.83 | 78.84 | 77.77 | 73.60 | 66.53 | a | 51.10 | a | 47.63 | a | 61.74 | |||||||||
1943 | 40.68 | 52.82 | 54.03 | b | 62.57 | b | 63.45 | 69.03 | a | 74.77 | a | 76.18 | c | 75.10 | a | 62.43 | a | 54.40 | 48.32 | 61.15 | ||||||
1944 | 49.73 | a | 49.17 | 52.77 | 59.38 | a | 66.23 | 70.83 | a | 77.06 | 73.67 | a | 73.70 | 66.32 | 52.73 | 46.71 | 61.53 | |||||||||
1945 | 48.68 | 49.18 | 51.20 | a | 54.80 | 67.87 | 69.50 | 78.97 | 75.84 | 67.38 | a | 62.61 | 49.37 | 46.71 | 60.18 | |||||||||||
1946 | 47.81 | 48.86 | 52.21 | b | 57.43 | 69.23 | a | 68.03 | 75.90 | 75.65 | e | 70.24 | a | 57.00 | b | 48.23 | h | 47.57 | j | 62.24 | b | |||||
1947 | 41.50 | a | ----- | z | 57.87 | 63.07 | c | 69.52 | 70.63 | 75.26 | d | 74.42 | g | ----- | z | ----- | z | 50.21 | b | 48.97 | 59.63 | d | ||||
1948 | 46.10 | 46.62 | 53.23 | 55.57 | 63.87 | 74.60 | 75.39 | c | 71.97 | a | 70.40 | 60.32 | c | 49.67 | 43.68 | 59.28 | ||||||||||
1949 | 39.00 | 45.39 | 54.47 | a | 62.20 | 70.84 | 72.70 | 76.43 | a | 75.06 | 72.57 | 57.32 | 56.73 | 46.00 | 60.73 | |||||||||||
1950 | 33.43 | a | 48.00 | 49.81 | 57.27 | 63.48 | 72.93 | 77.19 | 78.81 | 72.13 | 59.13 | 51.07 | a | 51.06 | 59.53 | |||||||||||
1951 | 44.26 | 49.18 | 49.32 | 65.37 | 68.13 | 77.03 | 80.81 | 78.13 | 73.03 | 60.68 | 52.13 | 43.26 | 61.78 | |||||||||||||
1952 | 42.71 | 49.03 | 51.81 | 62.30 | 68.06 | 67.78 | g | 77.57 | a | 77.19 | 75.17 | 65.39 | 49.10 | 48.19 | 60.59 | a | ||||||||||
1953 | 50.71 | 49.86 | 53.27 | a | 57.17 | 67.65 | 68.30 | 79.90 | 78.19 | 71.43 | 63.13 | 54.33 | 49.32 | 61.94 | ||||||||||||
1954 | 43.23 | 51.71 | 53.39 | 55.93 | 65.12 | e | 67.53 | 70.77 | 71.14 | b | 67.33 | 61.97 | 56.50 | b | 49.68 | 59.52 | ||||||||||
1955 | 45.52 | b | 46.89 | 49.40 | a | 56.33 | 63.00 | 71.48 | a | 73.52 | 76.37 | a | 71.13 | 61.61 | c | 45.57 | 44.87 | 58.81 | ||||||||
1956 | 45.35 | 43.14 | 49.63 | a | 62.41 | a | 72.55 | 68.40 | 80.26 | 78.13 | 71.17 | 59.63 | d | 52.66 | a | 49.39 | 61.06 | |||||||||
1957 | 41.77 | a | 49.07 | 54.19 | 61.55 | a | 71.55 | 75.08 | f | ----- | z | ----- | z | 79.55 | h | 64.17 | g | 53.23 | 52.64 | c | 54.86 | e | ||||
1958 | ----- | z | 56.59 | a | 54.90 | a | 60.77 | 73.07 | a | 74.96 | c | 82.90 | a | 78.86 | c | 70.46 | f | 63.30 | d | 52.05 | h | ----- | z | 68.17 | d | |
1959 | 47.33 | a | 47.60 | c | 52.77 | a | 60.33 | 65.23 | a | 69.50 | 78.54 | g | 73.72 | b | 65.72 | a | 58.79 | b | 50.45 | a | 45.73 | a | 57.93 | a | ||
1960 | 43.71 | 48.67 | b | 51.39 | 59.03 | 61.48 | b | 71.04 | c | 80.52 | d | 71.93 | b | 66.63 | 59.58 | g | 50.55 | a | 48.23 | r | 60.50 | b | ||||
1961 | 49.79 | g | 46.32 | 50.96 | e | ----- | z | 71.29 | q | 73.91 | h | 81.59 | n | 79.73 | i | 70.42 | k | 57.38 | e | 50.76 | e | 45.93 | p | 51.36 | h | |
1962 | 44.93 | b | 50.50 | 51.85 | k | 61.97 | 61.10 | 69.91 | h | 74.27 | e | 75.70 | k | 70.86 | i | 60.81 | 52.68 | b | 48.35 | 56.83 | d | |||||
1963 | 40.55 | 56.50 | 53.85 | d | 58.87 | 69.16 | 68.07 | b | 70.62 | e | 72.63 | a | 72.27 | d | 62.26 | d | 50.66 | a | 45.70 | d | 60.09 | |||||
1964 | ----- | z | ----- | z | 52.00 | a | 57.31 | a | 63.70 | a | 68.34 | a | ----- | z | ----- | z | 66.60 | 60.97 | 45.52 | i | 42.45 | 58.77 | e | |||
1965 | 44.58 | 48.21 | 55.74 | 59.47 | 62.71 | 70.80 | 78.77 | 75.03 | 67.07 | 64.10 | 55.10 | 46.19 | 60.65 | |||||||||||||
1966 | 45.58 | 50.18 | 52.80 | a | 59.37 | 65.74 | 69.23 | 73.03 | 76.68 | 71.70 | 60.77 | 52.63 | 49.40 | a | 60.59 | |||||||||||
1967 | 47.58 | 50.29 | 50.19 | 55.20 | 64.77 | 74.37 | 78.16 | 83.58 | 77.30 | 61.84 | 53.97 | 45.52 | 61.90 | |||||||||||||
1968 | 45.32 | 55.72 | 55.55 | 57.07 | 66.29 | 69.67 | 79.13 | 73.16 | 68.60 | 59.58 | 52.47 | 42.52 | 60.42 | |||||||||||||
1969 | 37.48 | 48.04 | 55.45 | 57.97 | 68.48 | 75.07 | 75.10 | 72.87 | 68.90 | 60.94 | 52.90 | 49.10 | 60.19 | |||||||||||||
1970 | 46.68 | 55.36 | 54.84 | 55.50 | 64.94 | 74.90 | 76.52 | 75.16 | 67.18 | b | 59.71 | 53.77 | 44.61 | 60.76 | ||||||||||||
1971 | 45.32 | 47.96 | 48.81 | 57.60 | 64.84 | 65.70 | 77.74 | 80.55 | 68.83 | 58.00 | 51.13 | 42.84 | 59.11 | |||||||||||||
1972 | 42.52 | 48.52 | 53.87 | 55.00 | 68.16 | 69.00 | 78.52 | 80.71 | 68.67 | 60.97 | 53.40 | 43.32 | 60.22 | |||||||||||||
1973 | 45.68 | 52.71 | 53.29 | 59.67 | 67.97 | 68.03 | 76.90 | 72.26 | 71.03 | 59.58 | 48.20 | 49.23 | 60.38 | |||||||||||||
1974 | 44.68 | 47.96 | 52.39 | 56.57 | 62.16 | 71.20 | 74.26 | 77.45 | 77.40 | 64.19 | 52.77 | 49.42 | 60.87 | |||||||||||||
1975 | 45.48 | 47.93 | 51.61 | 54.77 | 65.48 | 68.50 | 76.84 | 71.19 | 73.07 | 58.61 | 50.93 | 48.03 | 59.37 | |||||||||||||
1976 | 47.87 | 48.48 | 50.39 | 59.43 | 65.94 | 67.73 | 75.61 | 70.23 | 71.50 | 62.65 | 54.30 | 49.16 | 60.27 | |||||||||||||
1977 | 44.39 | 55.25 | 51.45 | 63.07 | 62.58 | 72.90 | 74.55 | 82.03 | a | 68.43 | 61.29 | 50.33 | 48.19 | 61.21 | ||||||||||||
1978 | 48.94 | 52.18 | 58.55 | 60.00 | 67.00 | 78.92 | f | 79.47 | a | 76.32 | 66.57 | 64.07 | b | 47.97 | 44.00 | b | 60.46 | a | ||||||||
1979 | 42.97 | 48.25 | 60.94 | 58.58 | d | 69.77 | 76.10 | ----- | z | 76.89 | m | 76.60 | 65.84 | 52.27 | 50.65 | 60.20 | b | |||||||||
1980 | 43.10 | a | 51.90 | 54.19 | 66.13 | 68.61 | 68.81 | c | 78.71 | 75.61 | 72.93 | 66.35 | 53.50 | 50.19 | 62.50 | |||||||||||
1981 | 52.10 | a | 51.50 | 60.48 | 61.25 | b | 66.68 | 69.57 | 77.06 | 84.74 | 74.73 | 60.58 | 55.37 | 47.19 | 63.44 | |||||||||||
1982 | 45.06 | 50.33 | a | 55.16 | 59.93 | a | 69.10 | b | 79.11 | b | 76.57 | a | 78.35 | 74.41 | a | 63.13 | a | 50.31 | a | 47.48 | 62.41 | |||||
1983 | 51.48 | 55.44 | a | 58.07 | a | 64.28 | a | 73.65 | 71.34 | a | 76.52 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 64.40 | e | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 44.57 | 48.77 | 53.04 | 59.08 | 65.65 | 70.45 | 75.60 | 74.97 | 69.70 | 60.95 | 51.48 | 46.63 | 60.37 | |||||||||||||
S.D. | 4.09 | 4.03 | 3.46 | 3.77 | 3.69 | 3.11 | 3.01 | 3.49 | 3.61 | 2.89 | 2.63 | 2.95 | 1.70 | |||||||||||||
SKEW | -0.58 | -0.22 | 0.24 | -0.45 | -0.45 | 0.43 | -0.06 | 0.21 | -0.10 | -0.19 | -0.12 | -0.51 | -0.63 | |||||||||||||
MAX | 52.10 | 56.59 | 61.58 | 68.00 | 73.65 | 79.11 | 82.90 | 84.74 | 77.40 | 66.53 | 57.62 | 52.64 | 63.44 | |||||||||||||
MIN | 33.43 | 37.62 | 43.32 | 44.80 | 53.90 | 64.43 | 68.94 | 66.68 | 60.80 | 53.70 | 45.50 | 38.35 | 55.56 | |||||||||||||
YRS | 71 | 73 | 74 | 73 | 71 | 67 | 68 | 66 | 68 | 69 | 71 | 68 | 51 |