YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1911 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 80.30 | 75.45 | 82.26 | 76.30 | 64.52 | 51.73 | 41.52 | 67.44 | e | |||||||
1912 | 48.13 | 48.24 | 53.84 | 57.80 | 72.74 | 77.47 | 80.16 | 77.16 | ----- | z | ----- | z | ----- | z | ----- | z | 64.44 | d | ||||||||
1913 | 44.65 | 45.29 | 51.90 | 62.57 | 73.13 | a | 74.90 | 81.32 | 77.97 | 69.97 | 65.81 | 57.03 | 41.87 | a | 62.20 | |||||||||||
1914 | 51.61 | 49.57 | 55.71 | 65.13 | 71.71 | 77.03 | 74.97 | 78.97 | 75.60 | 64.00 | a | 56.90 | 41.26 | 63.54 | ||||||||||||
1915 | 42.35 | 47.18 | 49.13 | 60.63 | 69.26 | 82.37 | 80.32 | 78.71 | 74.47 | 68.10 | 60.00 | 50.19 | 63.56 | |||||||||||||
1916 | 50.00 | 55.38 | 62.82 | c | 62.07 | 73.45 | 85.93 | 81.42 | 75.84 | ----- | z | ----- | z | ----- | z | ----- | z | 68.36 | d | |||||||
1917 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1918 | ----- | z | ----- | z | ----- | z | 61.36 | b | 71.00 | 83.10 | 80.03 | 76.39 | 75.83 | 65.13 | 48.27 | 42.65 | 67.08 | c | ||||||||
1919 | 43.29 | ----- | z | 55.73 | t | 63.52 | c | 71.74 | 77.33 | 76.74 | 81.17 | a | 72.50 | 63.19 | 54.80 | 52.10 | 65.64 | b | ||||||||
1920 | 50.37 | a | 53.21 | 55.50 | a | 61.18 | b | 75.61 | 78.80 | 82.13 | 79.16 | ----- | z | 65.68 | 53.23 | 38.81 | 63.06 | a | ||||||||
1921 | 52.13 | 51.64 | 59.70 | a | 62.23 | 73.58 | 79.45 | a | 78.71 | 77.13 | 76.45 | a | 71.61 | 58.10 | 54.39 | 66.26 | ||||||||||
1922 | 45.75 | k | 50.56 | a | 55.45 | 62.25 | f | 74.52 | b | 82.93 | 83.23 | ----- | z | 76.37 | 67.79 | c | 54.71 | i | 48.81 | j | 70.12 | e | ||||
1923 | 51.81 | 45.54 | 51.00 | a | 62.59 | a | 75.84 | 83.28 | a | 81.48 | b | 77.84 | 75.00 | h | 65.32 | 49.10 | a | 43.00 | 62.44 | a | ||||||
1924 | 43.94 | 54.21 | 50.67 | a | 61.07 | a | 75.42 | 83.97 | 78.58 | 80.55 | 74.38 | v | 66.84 | 59.50 | 44.26 | 63.54 | a | |||||||||
1925 | 44.26 | 53.89 | 61.44 | f | 69.17 | a | 73.14 | c | 79.83 | 80.63 | a | 75.77 | 73.80 | 64.26 | ----- | z | 44.21 | g | 68.31 | c | ||||||
1926 | 41.52 | 54.64 | 55.45 | 61.47 | 70.32 | 83.93 | 81.90 | a | 83.26 | 78.47 | 70.03 | 57.97 | 50.84 | f | 67.18 | a | ||||||||||
1927 | 58.52 | 50.70 | a | 63.90 | 69.30 | 81.13 | 80.70 | 84.74 | 80.13 | 72.90 | 68.19 | 68.93 | 44.03 | 68.60 | ||||||||||||
1928 | 44.47 | a | 44.34 | 60.16 | 64.83 | f | 71.10 | 82.10 | a | 85.23 | 77.45 | t | 73.00 | 67.48 | b | 50.34 | a | 47.27 | a | 62.55 | b | |||||
1929 | 46.32 | 43.11 | 52.65 | 65.47 | 69.45 | 86.37 | 79.77 | 76.42 | 76.07 | 64.16 | 50.47 | 50.65 | 63.41 | |||||||||||||
1930 | 42.42 | 54.14 | 52.39 | 69.00 | 69.45 | 82.23 | 80.90 | 79.84 | 78.10 | 66.07 | q | 49.57 | 43.69 | e | 63.79 | a | ||||||||||
1931 | 44.24 | b | 48.14 | 52.71 | 61.57 | 70.68 | 83.33 | 84.06 | 76.97 | 78.40 | 71.13 | 57.50 | j | 47.77 | r | 67.12 | b | |||||||||
1932 | ----- | z | 56.34 | 53.45 | 66.90 | 73.03 | 85.07 | p | 82.03 | 82.71 | 74.40 | 64.26 | 57.07 | 43.39 | 65.36 | b | ||||||||||
1933 | 44.81 | 46.75 | 58.05 | j | 60.46 | q | 74.19 | 81.17 | 84.26 | 78.32 | 83.53 | 72.39 | 64.53 | 56.87 | 68.68 | b | ||||||||||
1934 | 48.29 | 61.82 | 65.32 | 74.07 | 79.71 | 87.45 | j | 82.73 | p | 84.35 | 79.00 | 82.52 | 58.00 | 51.55 | 68.46 | b | ||||||||||
1935 | 51.87 | 49.82 | 59.06 | 65.97 | 67.77 | 82.03 | 83.58 | 77.87 | 72.43 | 68.71 | 56.17 | 47.71 | 65.25 | |||||||||||||
1936 | 47.03 | 50.28 | 59.16 | 65.83 | 72.87 | 82.17 | 80.77 | 81.19 | 74.93 | 65.45 | 55.87 | 48.65 | 65.35 | |||||||||||||
1937 | 43.16 | 49.96 | 53.84 | 66.10 | 74.58 | 80.50 | 82.76 | b | 78.58 | l | 77.58 | f | 70.74 | 60.37 | 52.80 | p | 64.67 | c | ||||||||
1938 | 48.87 | 54.25 | 59.28 | b | 67.43 | 74.42 | 81.20 | 80.23 | ----- | z | 76.81 | i | 71.55 | 54.23 | 51.84 | 64.33 | b | |||||||||
1939 | 45.66 | b | 45.92 | b | 55.00 | u | ----- | z | 75.45 | 83.43 | 82.03 | 81.06 | 77.10 | 67.00 | 55.47 | 55.42 | 66.85 | b | ||||||||
1940 | 48.74 | 49.59 | 59.61 | 64.93 | 74.06 | 79.57 | 82.71 | 78.10 | 76.79 | a | 67.11 | d | 53.73 | 51.94 | m | 66.81 | a | |||||||||
1941 | 47.16 | f | 51.93 | a | 53.13 | 58.72 | a | 70.28 | b | 76.62 | a | 78.66 | b | 77.93 | b | 78.25 | v | 67.42 | l | 58.09 | g | 51.29 | c | 64.82 | d | |
1942 | 49.87 | 47.50 | b | 53.69 | b | 62.80 | 74.71 | 83.47 | 83.52 | 78.68 | c | 73.76 | a | 64.39 | c | 60.90 | 50.65 | 65.33 | ||||||||
1943 | 48.47 | a | 56.05 | f | 56.28 | m | 66.09 | s | 75.20 | a | 79.00 | c | 80.79 | c | 85.00 | p | 68.54 | q | 66.07 | a | 57.67 | f | 46.74 | h | 69.90 | g |
1944 | 46.73 | a | 49.72 | 54.70 | u | 64.73 | 73.67 | j | 84.54 | f | 77.10 | 80.48 | 73.90 | 67.23 | 54.23 | 50.06 | 62.69 | c | ||||||||
1945 | 48.03 | 55.19 | b | 57.35 | 65.47 | 64.55 | 80.89 | c | 83.03 | a | 80.86 | b | 76.37 | 66.35 | 60.40 | 47.16 | 65.47 | |||||||||
1946 | 43.13 | 53.68 | 57.68 | 69.07 | 71.16 | 84.53 | 81.94 | 79.65 | 75.97 | 67.32 | 55.75 | b | 53.06 | 66.08 | ||||||||||||
1947 | 43.84 | 52.32 | 56.74 | 62.38 | i | ----- | z | 80.86 | h | 84.26 | 78.45 | 80.83 | 70.71 | 50.43 | 45.97 | 62.62 | c | |||||||||
1948 | 48.00 | 48.93 | 50.55 | 68.30 | 73.84 | 82.07 | 83.10 | b | 82.26 | ----- | z | ----- | z | ----- | z | ----- | z | 67.13 | d | |||||||
1949 | ----- | z | ----- | z | ----- | z | ----- | z | 75.32 | 81.90 | 81.03 | b | 79.90 | 77.81 | d | 65.57 | a | 60.40 | ----- | z | 74.56 | e | ||||
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 78.87 | 81.00 | h | ----- | z | ----- | z | 63.33 | i | 55.60 | k | 78.87 | k | |
1951 | 50.00 | h | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 88.06 | m | 84.50 | s | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1952 | ----- | z | 58.50 | m | 52.63 | a | 64.34 | a | 73.32 | 83.07 | a | 80.84 | 84.13 | 79.03 | a | 71.94 | 55.83 | 50.32 | 69.55 | b | ||||||
1953 | 56.45 | 53.04 | 59.87 | 66.07 | a | 70.19 | 85.03 | 82.55 | 81.87 | 78.57 | 69.55 | 61.43 | 46.67 | a | 67.61 | |||||||||||
1954 | 53.48 | 59.25 | 59.71 | 71.40 | 74.19 | 82.60 | 83.00 | 78.26 | 78.20 | 69.65 | 62.17 | a | 53.42 | 68.78 | ||||||||||||
1955 | 45.65 | 49.21 | 57.71 | 66.72 | a | 72.68 | 79.48 | a | 78.61 | 77.94 | 79.53 | 68.10 | 59.47 | 55.97 | 65.92 | |||||||||||
1956 | 54.55 | 49.03 | 62.90 | a | 65.43 | 78.55 | 84.07 | 81.20 | a | 77.90 | a | 79.27 | 69.68 | 57.40 | 51.10 | 67.59 | ||||||||||
1957 | 50.87 | 58.79 | 57.13 | a | 64.30 | 69.87 | 82.03 | 83.81 | 79.42 | 77.13 | 63.58 | 51.37 | 52.84 | 65.93 | ||||||||||||
1958 | 45.68 | 53.18 | 49.77 | 64.00 | 75.96 | g | 82.10 | 83.26 | 81.23 | 73.63 | 63.03 | 57.87 | 55.13 | 64.44 | a | |||||||||||
1959 | 52.65 | 52.29 | 57.81 | 66.73 | 73.77 | 81.83 | 81.35 | 80.23 | 78.43 | 68.81 | 59.87 | 51.52 | 67.11 | |||||||||||||
1960 | 45.13 | 46.55 | 61.39 | 67.50 | 73.03 | a | 83.40 | 79.29 | 82.03 | 77.73 | 67.52 | 61.23 | 46.43 | a | 65.94 | |||||||||||
1961 | 48.96 | f | 53.00 | a | 57.06 | 67.50 | f | 77.12 | e | 81.80 | 82.16 | 79.74 | 73.14 | a | 68.10 | 53.73 | ----- | z | 69.54 | c | ||||||
1962 | 43.65 | 56.11 | 52.84 | 68.47 | 77.45 | 81.13 | 78.58 | 84.26 | 75.33 | 67.64 | c | 59.47 | 51.72 | b | 66.39 | |||||||||||
1963 | 46.13 | 53.61 | 59.45 | 68.96 | e | 76.32 | l | 82.04 | b | 83.94 | 77.23 | a | 75.89 | b | 68.54 | e | 55.63 | 48.07 | a | 65.41 | a | |||||
1964 | 43.39 | 43.10 | 53.00 | 62.43 | 73.39 | 81.20 | 82.90 | a | 81.90 | 73.07 | 68.06 | 55.70 | 49.45 | 63.97 | ||||||||||||
1965 | 50.35 | 47.07 | 51.58 | 65.47 | 72.06 | 78.87 | 81.70 | a | 78.74 | 73.27 | 68.39 | 59.80 | 48.81 | 64.68 | ||||||||||||
1966 | 42.39 | 42.61 | 58.65 | 64.97 | 74.23 | 78.43 | 82.42 | 77.06 | 74.03 | 65.90 | a | 59.24 | e | 47.77 | 63.97 | |||||||||||
1967 | 48.90 | 52.29 | 62.74 | 67.00 | 72.58 | 78.87 | 81.58 | 77.16 | 72.53 | 67.74 | 56.63 | 43.45 | 65.12 | |||||||||||||
1968 | 45.77 | 50.90 | 52.45 | 60.73 | 72.32 | 82.38 | a | 78.58 | 75.94 | 74.20 | 69.48 | 52.50 | 46.74 | 63.50 | ||||||||||||
1969 | 51.13 | 49.21 | 51.81 | 66.77 | 73.45 | 80.70 | 83.00 | 81.58 | 73.77 | 64.06 | 54.27 | 48.19 | 64.83 | |||||||||||||
1970 | 47.90 | 52.04 | 52.13 | 63.70 | 74.26 | 79.53 | 81.68 | 80.16 | 75.80 | 60.74 | 56.53 | 50.42 | 64.57 | |||||||||||||
1971 | 47.68 | 51.04 | 59.74 | 63.17 | 72.03 | 82.27 | 83.06 | 74.87 | 75.27 | 63.13 | 54.20 | 46.52 | 64.41 | |||||||||||||
1972 | 49.13 | 53.72 | 63.81 | 68.34 | a | 72.84 | 79.27 | 81.00 | 77.48 | 72.23 | 65.77 | 48.27 | 47.26 | 64.93 | ||||||||||||
1973 | 43.45 | 45.50 | 51.61 | 59.07 | 70.42 | 80.70 | 79.74 | 79.84 | 75.93 | 69.23 | 58.63 | 49.39 | 63.63 | |||||||||||||
1974 | 49.35 | 50.04 | 62.45 | 65.83 | 77.10 | 84.43 | 78.35 | 74.77 | 70.90 | 63.77 | 53.00 | 43.87 | 64.49 | |||||||||||||
1975 | 45.71 | 47.89 | 54.84 | 60.90 | 70.13 | 82.23 | 77.74 | 80.16 | 72.33 | 67.77 | 56.70 | 50.06 | 63.87 | |||||||||||||
1976 | 47.74 | 55.90 | 56.68 | 64.48 | a | 70.77 | 81.17 | 76.84 | 78.55 | 71.33 | 61.06 | 51.47 | 47.26 | 63.60 | ||||||||||||
1977 | 44.71 | 50.61 | 53.77 | 64.03 | 72.74 | 82.83 | 80.48 | 80.87 | 77.57 | 68.30 | a | 59.77 | 53.74 | 65.79 | ||||||||||||
1978 | 46.16 | 48.00 | 58.45 | 68.03 | 73.16 | 85.20 | 84.65 | 78.77 | 72.73 | ----- | z | ----- | z | ----- | z | 68.35 | c | |||||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 47.45 | 50.81 | 56.32 | 64.92 | 73.10 | 81.48 | 81.15 | 79.32 | 75.56 | 67.29 | 56.35 | 48.57 | 65.20 | |||||||||||||
S.D. | 3.74 | 4.06 | 4.14 | 3.25 | 2.80 | 2.33 | 2.31 | 2.30 | 2.72 | 3.35 | 4.18 | 4.21 | 1.55 | |||||||||||||
SKEW | 0.70 | 0.18 | 0.27 | 0.15 | 0.11 | -0.42 | -0.59 | 0.22 | 0.35 | 1.42 | 0.17 | -0.17 | 0.53 | |||||||||||||
MAX | 58.52 | 61.82 | 65.32 | 74.07 | 81.13 | 86.37 | 85.23 | 84.35 | 83.53 | 82.52 | 68.93 | 56.87 | 68.78 | |||||||||||||
MIN | 41.52 | 42.61 | 49.13 | 57.80 | 64.55 | 74.90 | 74.97 | 74.77 | 69.97 | 60.74 | 48.27 | 38.81 | 62.20 | |||||||||||||
YRS | 57 | 59 | 56 | 56 | 60 | 61 | 65 | 60 | 55 | 59 | 56 | 52 | 33 |