YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1917 | 35.60 | e | 42.59 | 47.58 | 58.17 | 61.55 | 77.23 | 84.61 | 79.60 | 73.10 | 66.04 | c | 51.98 | d | 49.54 | h | 61.64 | a | ||||||||
1918 | 49.54 | d | 50.09 | 57.03 | 61.20 | 61.87 | 83.95 | 80.56 | 77.82 | 73.47 | 63.23 | ----- | z | ----- | z | 65.88 | b | |||||||||
1919 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1920 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1921 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | ----- | 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 | 43.06 | e | 48.62 | 47.23 | 58.78 | a | 64.76 | 73.47 | 84.55 | 79.00 | 74.28 | 62.42 | 49.45 | b | 42.31 | 60.66 | ||||||||||
1946 | 42.68 | a | 44.18 | 49.66 | 61.52 | 65.24 | 74.48 | 80.79 | 79.94 | 71.17 | 56.26 | 45.75 | 44.47 | 59.68 | ||||||||||||
1947 | 40.70 | a | 48.69 | d | 54.81 | d | 60.07 | 71.48 | a | 72.81 | a | 78.90 | 76.17 | b | 75.50 | a | 61.44 | 44.88 | f | 40.10 | g | 64.06 | b | |||
1948 | 44.29 | b | 43.63 | f | 45.34 | b | 57.16 | b | 64.40 | b | 73.58 | 80.66 | 77.74 | 72.88 | a | 61.45 | 46.07 | 40.92 | 60.41 | a | ||||||
1949 | 33.61 | h | 41.91 | 50.21 | 64.31 | a | 65.48 | 76.60 | 81.26 | 77.05 | 75.25 | 62.79 | l | 55.50 | 41.69 | 62.93 | b | |||||||||
1950 | 40.32 | 50.34 | 53.95 | 62.73 | 66.61 | 73.52 | 82.89 | 81.29 | 73.00 | 65.74 | 56.05 | 50.15 | a | 63.05 | ||||||||||||
1951 | 45.21 | 47.57 | 51.74 | 60.75 | 68.11 | 74.72 | 83.32 | 80.18 | 76.65 | 62.06 | d | 50.48 | 42.16 | 61.91 | ||||||||||||
1952 | 41.23 | 47.66 | 46.24 | 58.18 | 70.50 | 68.80 | 81.82 | 81.47 | 74.97 | 67.02 | 47.57 | 43.47 | 60.74 | |||||||||||||
1953 | 48.35 | 44.70 | 51.21 | 57.48 | a | 58.92 | 70.66 | a | 85.13 | 77.79 | 75.00 | 61.31 | 52.60 | 42.61 | 60.48 | |||||||||||
1954 | 43.09 | c | 51.52 | 48.98 | 63.43 | 70.81 | 73.15 | 84.82 | 76.60 | 72.82 | 62.29 | 52.58 | 42.44 | 61.88 | ||||||||||||
1955 | 40.22 | a | 42.55 | 52.32 | 54.83 | a | 64.23 | a | 72.43 | 79.47 | 83.69 | 74.93 | 63.48 | g | 49.78 | 47.48 | c | 60.18 | a | |||||||
1956 | 48.48 | 44.52 | 53.10 | 57.03 | 64.52 | 76.15 | 79.31 | 76.92 | 76.20 | 60.08 | 46.85 | 41.26 | 60.37 | |||||||||||||
1957 | 39.90 | 52.55 | 53.05 | b | 58.30 | b | 62.27 | 76.73 | 80.21 | 77.34 | 71.27 | 56.82 | 46.47 | 43.06 | 59.83 | |||||||||||
1958 | 43.32 | 50.23 | 46.48 | 56.40 | 67.97 | 72.25 | 78.60 | 81.53 | a | 72.67 | 64.52 | 49.00 | ----- | z | 62.09 | a | ||||||||||
1959 | 46.54 | c | 44.07 | 56.32 | 64.35 | 63.27 | a | 77.48 | 85.03 | 78.69 | 71.47 | 65.83 | a | 52.63 | 43.90 | 62.47 | ||||||||||
1960 | 41.68 | 46.36 | 56.19 | 59.33 | 67.16 | 80.65 | 83.15 | 79.03 | 76.79 | a | 62.35 | 49.67 | 43.65 | 62.17 | ||||||||||||
1961 | 44.05 | a | 49.12 | 53.02 | 60.73 | 62.71 | 79.07 | 84.56 | 81.26 | 69.63 | 61.21 | 49.12 | 43.85 | a | 61.53 | |||||||||||
1962 | 42.40 | 46.91 | 48.13 | 62.65 | 62.48 | 74.37 | 79.58 | 79.68 | 73.48 | 63.10 | 53.63 | 45.37 | 60.98 | |||||||||||||
1963 | 42.10 | 55.00 | 50.42 | 53.17 | 66.10 | 69.73 | 79.45 | 76.89 | 73.83 | 63.90 | 51.03 | 44.08 | 60.48 | |||||||||||||
1964 | 42.19 | 44.19 | 48.44 | 55.85 | 63.37 | 72.42 | 81.02 | 79.90 | 70.52 | 67.23 | 45.85 | 45.94 | 59.74 | |||||||||||||
1965 | 45.00 | 47.09 | 51.60 | 56.38 | 63.73 | 68.78 | 78.02 | 78.97 | 67.50 | 65.11 | 52.67 | 42.28 | a | 59.76 | ||||||||||||
1966 | 41.74 | 43.83 | a | 53.85 | 61.70 | 67.27 | 74.47 | 78.71 | 81.08 | 72.55 | 61.90 | 51.83 | 42.29 | 60.94 | ||||||||||||
1967 | 42.85 | a | 47.62 | 52.06 | 48.20 | 64.97 | 69.78 | 83.08 | 83.37 | 73.63 | 63.74 | 55.00 | 40.06 | 60.37 | ||||||||||||
1968 | 42.85 | 51.88 | 52.27 | 56.73 | 65.94 | 76.12 | 81.05 | 75.89 | 72.30 | 62.37 | 51.40 | 39.29 | 60.67 | |||||||||||||
1969 | 47.63 | 44.21 | 49.97 | 57.18 | 68.42 | 71.52 | 80.73 | 81.15 | 75.02 | 58.26 | 50.78 | 45.13 | 60.83 | |||||||||||||
1970 | 45.90 | 49.48 | 51.74 | 53.52 | 66.69 | 74.05 | 83.73 | 82.15 | 70.13 | 60.31 | 52.12 | 42.45 | 61.02 | |||||||||||||
1971 | 43.29 | 47.66 | 52.31 | 54.77 | 60.27 | 72.55 | 81.71 | 81.87 | 72.52 | 57.02 | 49.23 | 38.56 | 59.31 | |||||||||||||
1972 | 41.00 | 50.16 | 59.39 | 58.40 | 66.35 | 74.08 | 81.44 | 78.39 | 70.42 | 65.08 | y | ----- | z | ----- | z | 64.40 | c | |||||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 43.28 | 47.42 | 51.49 | 58.44 | 65.25 | 74.19 | 81.60 | 79.41 | 73.10 | 62.33 | 50.56 | 43.16 | 60.86 | |||||||||||||
S.D. | 2.99 | 3.34 | 3.37 | 3.62 | 3.01 | 3.40 | 2.17 | 2.15 | 2.20 | 2.96 | 2.92 | 2.49 | 0.97 | |||||||||||||
SKEW | 0.09 | 0.20 | 0.20 | -0.51 | 0.14 | 0.76 | 0.19 | 0.17 | -0.40 | -0.36 | -0.03 | 0.71 | 0.53 | |||||||||||||
MAX | 49.54 | 55.00 | 59.39 | 64.35 | 71.48 | 83.95 | 85.13 | 83.69 | 76.79 | 67.23 | 56.05 | 50.15 | 63.05 | |||||||||||||
MIN | 35.60 | 41.91 | 45.34 | 48.20 | 58.92 | 68.78 | 78.02 | 75.89 | 67.50 | 56.26 | 45.75 | 38.56 | 59.31 | |||||||||||||
YRS | 29 | 29 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 27 | 27 | 25 | 22 |