YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1911 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 65.07 | a | 64.89 | 66.85 | 62.77 | 50.69 | 38.75 | 28.72 | a | 53.96 | e | |||||
1912 | 34.47 | 33.84 | 41.39 | 44.53 | 56.84 | 62.53 | 66.18 | 64.53 | ----- | z | ----- | z | ----- | z | ----- | z | 50.54 | d | ||||||||
1913 | 30.76 | 34.20 | 38.39 | 46.52 | 55.70 | a | 60.25 | 65.82 | 63.92 | 56.10 | 49.87 | 43.52 | 28.83 | a | 47.82 | |||||||||||
1914 | 37.40 | 35.39 | 39.31 | 48.83 | 55.60 | 62.85 | 63.26 | 64.87 | 60.08 | 49.43 | a | 43.10 | 31.19 | 49.28 | ||||||||||||
1915 | 30.10 | 34.11 | 35.94 | 47.05 | 53.40 | 64.78 | 66.44 | 64.03 | 59.87 | 51.00 | 42.17 | 34.89 | 48.65 | |||||||||||||
1916 | 38.87 | 40.16 | 46.77 | c | 46.85 | 55.74 | 65.28 | 66.26 | 63.10 | ----- | z | ----- | z | ----- | z | ----- | z | 52.88 | d | |||||||
1917 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1918 | ----- | z | ----- | z | ----- | z | 47.52 | b | 55.97 | 67.12 | 67.16 | 64.11 | 61.02 | 52.56 | 36.93 | 30.97 | 53.71 | c | ||||||||
1919 | 30.13 | ----- | z | 48.56 | w | 49.57 | c | 56.42 | 62.05 | 64.61 | 66.42 | a | 60.65 | 52.45 | 42.58 | 39.19 | 52.41 | b | ||||||||
1920 | 37.75 | a | 41.07 | 41.42 | a | 46.27 | b | 58.55 | a | 63.35 | 66.53 | 64.42 | ----- | z | 50.44 | 41.98 | a | 23.50 | 48.66 | a | ||||||
1921 | 35.12 | c | 35.77 | 43.82 | a | 46.13 | 56.92 | 63.31 | a | 65.68 | 64.16 | 61.88 | a | 54.73 | 41.32 | 36.97 | l | 51.71 | a | |||||||
1922 | 32.95 | t | 37.35 | a | 40.98 | 47.88 | f | 58.16 | b | 65.68 | 68.23 | ----- | z | 62.17 | 52.20 | c | 39.43 | i | 37.48 | j | 54.97 | e | ||||
1923 | 38.68 | 34.84 | 37.77 | a | 48.12 | a | 58.11 | 65.57 | a | 66.69 | b | 65.05 | 57.09 | h | 45.71 | 32.84 | b | 27.24 | 47.33 | a | ||||||
1924 | 24.21 | 33.21 | 36.45 | c | 47.10 | a | 58.15 | 66.98 | 65.79 | 65.85 | 61.12 | v | 51.44 | 44.08 | 31.69 | 47.72 | a | |||||||||
1925 | 29.44 | 39.29 | 49.20 | h | 57.98 | e | 58.11 | q | 61.18 | 65.63 | a | 62.37 | p | 60.72 | 51.74 | ----- | z | 31.31 | g | 52.28 | e | |||||
1926 | 28.69 | 40.75 | 43.98 | 50.38 | 57.47 | 65.72 | a | 65.97 | a | 64.58 | 61.48 | 54.35 | 45.43 | 36.98 | h | 52.62 | a | |||||||||
1927 | 42.45 | 39.48 | a | 46.80 | a | 50.07 | 57.31 | 59.00 | 64.61 | 60.87 | 56.35 | 51.11 | 48.88 | 28.76 | 50.47 | |||||||||||
1928 | 31.65 | a | 30.41 | 44.65 | 50.07 | h | 56.74 | 65.11 | b | 67.88 | b | 61.68 | t | 58.50 | 53.29 | b | 38.81 | a | 32.98 | b | 48.00 | b | ||||
1929 | 32.87 | 31.31 | a | 39.53 | 49.78 | 55.27 | 64.93 | 66.56 | 64.16 | 61.73 | 50.63 | 36.00 | 34.90 | 48.98 | ||||||||||||
1930 | 29.95 | a | 38.93 | 37.76 | 51.68 | 53.60 | 64.58 | 66.03 | 65.45 | 61.48 | 51.32 | q | 36.91 | a | 29.79 | e | 48.74 | a | ||||||||
1931 | 30.05 | b | 36.77 | 37.92 | 47.40 | 53.95 | 65.12 | 67.92 | 63.06 | 63.83 | 54.44 | 43.48 | j | 35.08 | r | 52.05 | b | |||||||||
1932 | ----- | z | 42.16 | 38.89 | 48.42 | 54.94 | 66.46 | p | 67.02 | 67.00 | 58.65 | 49.65 | 40.53 | 31.45 | 49.87 | b | ||||||||||
1933 | 32.48 | 32.80 | 42.62 | j | 44.85 | q | 55.84 | 64.10 | 65.84 | 60.71 | 62.60 | 53.53 | 46.77 | 39.26 | 51.39 | b | ||||||||||
1934 | 31.76 | 40.21 | 44.11 | 56.98 | 62.81 | 64.88 | j | 67.77 | p | 67.68 | 59.87 | 60.34 | 44.28 | 38.47 | 50.65 | b | ||||||||||
1935 | 38.23 | 37.02 | 45.37 | 50.70 | 52.73 | 64.68 | 68.26 | 66.35 | 58.77 | 53.48 | 42.62 | a | 35.19 | 51.12 | ||||||||||||
1936 | 33.58 | 38.26 | 44.08 | 50.05 | 57.69 | 65.70 | 66.55 | 66.02 | 60.60 | 50.82 | 41.27 | 35.32 | a | 50.83 | ||||||||||||
1937 | 30.71 | 36.46 | 39.63 | 49.63 | 58.13 | 63.77 | 66.74 | b | 64.89 | l | 61.96 | f | 54.52 | a | 44.20 | 39.10 | p | 49.31 | c | |||||||
1938 | 34.79 | 40.16 | 43.72 | b | 49.03 | a | 57.16 | 65.43 | 65.37 | ----- | z | 60.36 | i | 54.23 | 37.78 | 36.90 | 48.46 | b | ||||||||
1939 | 32.09 | c | 30.13 | b | 37.90 | u | ----- | z | 57.10 | 65.27 | 66.73 | 65.08 | 61.23 | 49.92 | 41.12 | 35.73 | 50.44 | b | ||||||||
1940 | 30.02 | 35.36 | 43.50 | a | 48.33 | 58.37 | 63.72 | a | 68.08 | 64.77 | 61.90 | a | 52.41 | d | 40.55 | 39.61 | m | 51.55 | a | |||||||
1941 | 35.92 | f | 39.72 | a | 40.39 | 45.21 | a | 56.60 | b | 61.22 | a | 64.12 | b | 64.40 | b | 63.06 | v | 53.00 | l | ----- | z | 37.41 | c | 51.13 | d | |
1942 | 36.47 | 34.48 | b | 38.62 | b | 48.65 | 58.12 | e | 65.42 | 69.08 | 65.38 | c | 59.53 | a | 49.91 | c | 45.18 | 36.69 | 50.63 | |||||||
1943 | 35.47 | a | 39.20 | f | 41.17 | m | 46.17 | u | 57.08 | a | 62.50 | c | 65.38 | c | 67.70 | p | 56.58 | q | 49.90 | a | 40.94 | f | 33.70 | h | 54.06 | g |
1944 | 32.72 | a | 37.00 | 38.00 | u | 47.42 | 56.14 | j | 64.92 | f | 63.24 | 65.39 | 57.78 | a | 50.65 | a | 37.82 | 32.97 | 47.22 | c | ||||||
1945 | 31.69 | 37.79 | b | 39.47 | 46.15 | 49.79 | 61.28 | c | 66.83 | a | 66.95 | b | 60.88 | 51.85 | 43.88 | 33.66 | 49.19 | |||||||||
1946 | 31.29 | 37.30 | 42.84 | 53.24 | a | 55.21 | 64.37 | 66.22 | a | 66.16 | 62.50 | 52.94 | 40.12 | b | 38.82 | 50.92 | ||||||||||
1947 | 30.90 | 38.50 | 41.98 | 46.81 | i | ----- | z | 63.34 | h | 68.02 | 65.11 | 62.50 | 54.21 | 38.13 | 32.63 | 48.00 | c | |||||||||
1948 | 32.92 | a | 35.90 | 37.55 | 52.67 | 57.55 | 66.25 | 64.91 | b | 65.76 | ----- | z | ----- | z | ----- | z | ----- | z | 51.69 | d | ||||||
1949 | ----- | z | ----- | z | ----- | z | ----- | z | 57.48 | 64.45 | a | 66.72 | b | 65.15 | 62.75 | d | 49.78 | a | 44.03 | ----- | z | 58.62 | e | |||
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 64.68 | 65.08 | m | ----- | z | ----- | z | 46.67 | j | 38.75 | k | 64.68 | k | |
1951 | 33.70 | h | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 72.06 | m | 69.33 | s | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1952 | ----- | z | 40.16 | m | 38.68 | a | 48.52 | a | 56.18 | 65.43 | a | 66.11 | 68.19 | 61.21 | a | 53.18 | 40.68 | 34.58 | 53.28 | b | ||||||
1953 | 39.35 | 34.91 | 44.29 | 49.38 | a | 53.13 | 66.83 | 67.71 | 65.68 | 61.22 | 53.34 | 45.03 | 31.57 | a | 51.04 | |||||||||||
1954 | 38.18 | 42.57 | 44.82 | 54.12 | 57.63 | 65.35 | 68.84 | 65.23 | 63.73 | 54.65 | 44.78 | a | 37.69 | 53.13 | ||||||||||||
1955 | 32.65 | 33.39 | 43.10 | 50.21 | a | 56.02 | 62.71 | a | 65.74 | 64.87 | 62.92 | 52.68 | 43.70 | 40.42 | 50.70 | |||||||||||
1956 | 40.15 | 33.84 | 44.17 | a | 48.33 | 60.26 | 67.63 | 67.15 | a | 64.45 | a | 61.93 | 53.89 | 40.58 | 36.17 | a | 51.55 | |||||||||
1957 | 39.47 | 46.39 | 43.52 | a | 48.57 | 54.08 | 64.70 | 68.84 | 66.19 | 60.53 | 50.66 | 38.33 | 38.48 | 51.65 | ||||||||||||
1958 | 31.76 | 40.18 | 38.58 | 48.17 | 58.77 | g | 66.58 | 68.18 | 67.03 | 61.37 | 50.98 | 43.67 | a | 39.15 | 50.51 | a | ||||||||||
1959 | 36.48 | a | 38.21 | 40.90 | 51.37 | 56.74 | 66.25 | 66.73 | 66.98 | 61.82 | 53.03 | 41.73 | 37.26 | 51.46 | ||||||||||||
1960 | 32.15 | a | 32.78 | 45.11 | 50.30 | 55.38 | a | 66.60 | 65.74 | 66.77 | 62.02 | 52.00 | 44.75 | 34.17 | a | 50.65 | ||||||||||
1961 | 32.79 | g | 37.98 | b | 42.92 | 50.33 | g | 59.48 | e | 64.12 | 66.47 | 65.73 | 60.33 | a | 52.13 | 38.55 | ----- | z | 54.19 | c | ||||||
1962 | 31.16 | 42.45 | 38.00 | 52.20 | 57.52 | 63.07 | 65.95 | 66.81 | 62.08 | 52.55 | c | 44.64 | a | 38.16 | b | 51.21 | ||||||||||
1963 | 32.23 | 38.79 | 44.08 | 50.90 | e | 58.37 | l | 63.68 | b | 68.26 | 64.22 | a | 61.21 | b | 52.69 | g | 41.18 | 32.33 | a | 49.69 | b | |||||
1964 | 27.89 | 27.35 | b | 38.18 | 45.75 | 55.87 | 62.07 | 66.23 | a | 66.10 | 60.15 | 51.85 | 40.87 | 35.08 | 48.12 | |||||||||||
1965 | 36.92 | 32.59 | 37.89 | 49.30 | 56.53 | 61.65 | 66.97 | a | 63.98 | 59.23 | 51.10 | 45.22 | 36.85 | a | 49.85 | |||||||||||
1966 | 28.74 | 29.55 | 42.82 | 49.03 | 57.61 | 62.82 | 67.65 | 63.97 | 59.10 | 49.73 | a | 43.38 | e | 33.84 | 49.02 | |||||||||||
1967 | 32.94 | 37.93 | 46.63 | 50.50 | 54.66 | 62.70 | 67.40 | 63.68 | 59.03 | 51.35 | 43.10 | 31.98 | 50.16 | |||||||||||||
1968 | 34.06 | 38.57 | 39.61 | 46.83 | 56.53 | a | 64.74 | a | 65.26 | 63.08 | 57.92 | 53.16 | 39.80 | 32.53 | 49.34 | |||||||||||
1969 | 38.94 | 36.18 | 36.45 | 50.93 | 56.45 | 64.38 | 69.19 | 67.69 | 60.57 | 51.77 | 40.40 | 36.45 | 50.78 | |||||||||||||
1970 | 33.00 | 38.57 | 38.18 | 46.60 | 55.89 | 62.75 | 66.90 | 65.61 | 60.95 | 47.13 | 41.28 | 36.50 | 49.45 | |||||||||||||
1971 | 33.23 | 35.70 | 42.61 | 47.30 | 55.77 | 63.77 | 68.44 | 62.24 | 60.18 | 49.97 | 41.25 | 35.34 | 49.65 | |||||||||||||
1972 | 34.53 | 38.14 | 47.55 | 50.50 | a | 55.42 | 63.30 | 66.89 | 64.16 | 59.77 | 53.39 | 35.77 | 35.15 | 50.38 | ||||||||||||
1973 | 31.18 | 34.16 | 38.82 | 44.13 | 55.40 | 63.07 | 66.44 | 64.82 | 61.28 | 52.94 | 45.27 | 36.16 | 49.47 | |||||||||||||
1974 | 36.98 | 34.68 | 47.45 | 50.17 | 59.68 | 66.68 | 65.76 | 63.11 | 58.38 | 51.85 | 40.15 | 32.08 | 50.58 | |||||||||||||
1975 | 33.63 | 35.46 | 41.47 | 45.78 | 53.77 | 64.38 | 66.03 | 66.34 | 58.88 | 52.31 | 41.13 | 36.27 | 49.62 | |||||||||||||
1976 | 33.16 | 41.69 | 42.68 | 48.26 | a | 55.11 | 64.09 | a | 64.05 | 64.39 | 58.52 | 46.82 | 37.63 | 33.21 | 49.13 | |||||||||||
1977 | 32.76 | 36.62 | 39.40 | 48.90 | 55.76 | 66.12 | 66.73 | 67.69 | 62.83 | 53.18 | a | 44.20 | 39.05 | 51.10 | ||||||||||||
1978 | 34.94 | 34.91 | 44.71 | 51.62 | 56.74 | 67.58 | 69.16 | 64.55 | 59.77 | ----- | z | ----- | z | ----- | z | 53.77 | c | |||||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 33.58 | 36.67 | 41.53 | 49.11 | 56.41 | 64.29 | 66.53 | 65.10 | 60.64 | 51.89 | 41.58 | 34.46 | 50.18 | |||||||||||||
S.D. | 3.56 | 3.57 | 3.15 | 2.70 | 2.00 | 1.84 | 1.37 | 1.55 | 1.71 | 2.23 | 3.10 | 3.53 | 1.14 | |||||||||||||
SKEW | 0.24 | -0.07 | 0.11 | 0.94 | -0.11 | -0.45 | -0.11 | -0.44 | -0.51 | 0.29 | -0.35 | -0.69 | 0.09 | |||||||||||||
MAX | 42.45 | 46.39 | 47.55 | 57.98 | 62.81 | 67.63 | 69.19 | 68.19 | 63.83 | 60.34 | 48.88 | 40.42 | 53.13 | |||||||||||||
MIN | 24.21 | 27.35 | 35.94 | 44.13 | 49.79 | 59.00 | 63.24 | 60.71 | 56.10 | 45.71 | 32.84 | 23.50 | 47.82 | |||||||||||||
YRS | 57 | 59 | 56 | 56 | 59 | 61 | 65 | 59 | 55 | 58 | 56 | 51 | 32 |