| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1905 | ----- | z | 34.95 | 49.68 | 54.63 | 59.58 | 67.67 | 76.89 | 73.06 | 65.15 | 47.26 | 38.40 | 34.26 | 54.68 | ||||||||||||
| 1906 | 35.40 | 41.84 | 42.39 | 56.62 | 61.39 | 64.77 | 80.66 | 72.52 | 65.45 | 55.88 | a | 41.38 | 35.59 | o | 56.21 | |||||||||||
| 1907 | 26.70 | z | 37.48 | 42.61 | i | 51.23 | 63.29 | 66.62 | 74.32 | 68.77 | a | 62.27 | f | 57.35 | 44.23 | ----- | z | 57.91 | ||||||||
| 1908 | 35.55 | 38.69 | 48.47 | 54.62 | 58.60 | 68.45 | 76.11 | c | 72.08 | 65.08 | 51.17 | a | 44.20 | 33.50 | 53.88 | |||||||||||
| 1909 | 24.11 | 41.82 | 46.87 | 51.97 | 59.52 | 69.70 | 71.53 | 70.23 | 65.75 | 54.11 | 44.33 | 27.87 | 52.32 | |||||||||||||
| 1910 | 29.97 | a | 31.48 | 51.18 | a | 57.52 | 64.69 | 66.98 | g | 74.39 | d | 68.25 | a | 62.27 | 53.32 | a | 43.06 | d | 37.55 | b | 52.15 | |||||
| 1911 | 35.39 | i | 34.89 | 47.15 | 52.21 | a | 57.37 | 69.37 | 75.30 | d | 70.82 | c | 60.90 | a | ----- | z | ----- | z | ----- | z | 58.50 | |||||
| 1912 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 37.34 | 37.34 | ||
| 1913 | 28.37 | d | 29.52 | a | 42.93 | h | 53.86 | a | 59.45 | c | 67.18 | 73.06 | 72.90 | 61.10 | 52.02 | 43.52 | 33.16 | 52.19 | ||||||||
| 1914 | 39.15 | 37.54 | 48.09 | b | 54.55 | a | 62.32 | a | 65.50 | 74.84 | 71.97 | a | 62.55 | 53.79 | 43.12 | 25.48 | 53.24 | |||||||||
| 1915 | 29.03 | 40.38 | 49.92 | 56.30 | 60.16 | 67.05 | 71.76 | 76.11 | 63.37 | 55.40 | 41.35 | 34.79 | 53.80 | |||||||||||||
| 1916 | 19.63 | 33.00 | 46.92 | 53.30 | 55.40 | 65.04 | g | 66.66 | 71.50 | 61.75 | 49.55 | 36.02 | 27.95 | 47.43 | ||||||||||||
| 1917 | 29.55 | 35.07 | 39.76 | 50.17 | 58.81 | 63.78 | 73.95 | 72.76 | 64.72 | 55.31 | 43.42 | 44.03 | a | 52.61 | ||||||||||||
| 1918 | 38.66 | 37.18 | 45.87 | 53.47 | 58.19 | 71.30 | 74.08 | 68.81 | 66.37 | 56.56 | 41.17 | 34.48 | 53.84 | |||||||||||||
| 1919 | 32.79 | 38.89 | 46.77 | 54.08 | 60.63 | 64.43 | 74.03 | ----- | z | 62.27 | 50.39 | 40.73 | 21.29 | 49.66 | ||||||||||||
| 1920 | 31.97 | 36.91 | 46.15 | 51.40 | 58.13 | 63.07 | 76.23 | 72.15 | a | 62.88 | 52.77 | 42.10 | 39.05 | 52.73 | ||||||||||||
| 1921 | 37.39 | 41.05 | 47.71 | 53.15 | 60.29 | c | 69.68 | 72.34 | 71.98 | 60.17 | 54.76 | 42.25 | 33.10 | a | 53.66 | |||||||||||
| 1922 | 22.19 | 32.46 | 42.52 | 49.83 | 57.32 | 74.11 | g | 74.58 | 73.50 | j | 65.53 | 55.05 | 38.92 | 26.95 | 46.54 | |||||||||||
| 1923 | 39.58 | 30.91 | 47.16 | 53.75 | 61.13 | 66.71 | b | 75.00 | 74.35 | 64.50 | 53.08 | 45.00 | 37.42 | 54.05 | ||||||||||||
| 1924 | 28.85 | 46.43 | 46.57 | a | 52.77 | 65.00 | 69.43 | 73.55 | 70.90 | 64.37 | 54.52 | 41.32 | 27.23 | a | 53.41 | |||||||||||
| 1925 | 39.34 | 45.04 | 48.76 | 56.63 | 63.95 | 69.83 | 76.69 | 72.27 | 64.00 | a | 52.31 | 39.98 | a | 39.85 | 55.72 | |||||||||||
| 1926 | 35.53 | 45.00 | 49.77 | 58.37 | 61.08 | 70.85 | 75.72 | b | 70.27 | a | 58.42 | 53.90 | 42.48 | b | 32.30 | d | 54.47 | |||||||||
| 1927 | 29.55 | a | 40.50 | c | 44.47 | 50.00 | 56.35 | 67.37 | 73.34 | 72.00 | 61.40 | a | 53.03 | b | 46.57 | 28.74 | 51.94 | |||||||||
| 1928 | 28.77 | 36.02 | 46.66 | 49.73 | b | 63.98 | 67.83 | 75.94 | 70.89 | 63.20 | 53.85 | 41.23 | b | 32.27 | 52.53 | |||||||||||
| 1929 | 22.00 | 22.16 | 48.77 | a | 51.41 | b | 61.24 | 67.53 | 73.74 | 74.32 | 61.83 | 55.27 | 35.21 | a | 36.82 | 50.86 | ||||||||||
| 1930 | 13.79 | 42.73 | 49.42 | a | 57.71 | a | 60.95 | 67.23 | b | 75.97 | 74.71 | ----- | z | 50.05 | 39.60 | d | 33.21 | c | 51.40 | |||||||
| 1931 | 39.63 | p | 39.23 | b | 46.93 | c | 53.06 | f | 65.02 | 68.23 | 76.20 | a | 72.71 | 67.58 | f | 52.23 | a | 40.10 | f | 32.68 | i | 60.08 | ||||
| 1932 | 29.56 | 43.75 | o | 46.97 | 55.08 | 60.50 | 70.30 | 71.21 | 71.67 | a | 64.05 | 55.29 | 45.75 | 31.44 | 54.71 | |||||||||||
| 1933 | 37.65 | 29.38 | 45.11 | 52.29 | a | 58.00 | 68.07 | a | 72.53 | b | 71.90 | a | 61.41 | b | 56.30 | c | 42.77 | 42.54 | c | 53.16 | ||||||
| 1934 | 40.40 | 42.47 | m | 49.75 | a | 59.32 | 64.02 | 67.58 | 73.72 | a | 73.61 | 63.87 | 57.30 | a | 48.53 | 39.98 | g | 59.81 | ||||||||
| 1935 | 35.48 | 39.05 | 44.90 | 50.60 | a | 62.03 | a | 68.52 | b | 74.16 | 70.42 | a | 67.71 | d | 52.24 | b | 35.66 | b | 34.36 | f | 54.62 | |||||
| 1936 | 37.31 | b | 21.54 | e | 45.61 | 59.08 | 65.73 | 70.52 | 74.05 | ----- | z | ----- | z | 56.65 | 32.98 | 36.70 | a | 50.02 | ||||||||
| 1937 | 13.57 | a | 32.07 | 48.63 | 54.55 | 62.65 | 68.32 | 76.42 | 68.87 | 65.43 | a | 55.71 | e | 46.43 | p | 38.60 | 53.16 | |||||||||
| 1938 | 35.14 | f | 36.52 | 45.45 | c | 52.71 | a | 59.55 | 68.52 | a | 75.34 | 69.53 | 68.55 | a | 55.78 | o | 38.35 | c | 36.18 | 55.07 | ||||||
| 1939 | 38.61 | 36.10 | b | 48.23 | 55.73 | 61.84 | 64.93 | a | ----- | z | 72.40 | 65.59 | h | 53.13 | ----- | z | 34.75 | z | 53.87 | |||||||
| 1940 | 31.97 | ----- | z | ----- | z | 55.67 | 63.79 | 69.98 | d | 73.79 | 72.18 | a | 66.68 | 55.73 | 35.23 | d | 34.58 | 55.96 | ||||||||
| 1941 | ----- | z | 39.81 | b | 50.53 | a | 55.90 | a | 59.76 | 65.73 | 76.28 | a | 71.03 | 60.20 | 50.65 | 43.17 | 37.87 | 55.54 | ||||||||
| 1942 | 25.27 | 38.70 | ----- | z | ----- | z | ----- | z | 68.70 | t | 75.50 | 76.18 | 65.78 | 54.67 | a | 40.89 | l | ----- | z | 56.02 | ||||||
| 1943 | 19.54 | q | 38.06 | c | 43.37 | 54.80 | c | 56.35 | 63.67 | 73.72 | b | 69.98 | 65.93 | 51.55 | b | ----- | z | 32.14 | b | 54.96 | ||||||
| 1944 | 30.98 | a | 37.25 | k | 42.68 | c | 51.57 | 60.27 | 66.24 | a | 72.80 | c | 69.65 | d | 63.95 | b | 54.48 | c | 38.52 | b | 30.96 | c | 52.92 | |||
| 1945 | 35.84 | ----- | z | ----- | z | ----- | z | ----- | z | 66.17 | d | 74.54 | d | 71.72 | a | 60.31 | c | 54.15 | g | 41.23 | s | ----- | z | 61.72 | ||
| 1946 | ----- | z | ----- | z | ----- | z | 54.56 | m | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 35.30 | p | 9999.00 | |
| 1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 70.92 | 70.28 | a | 69.84 | 62.32 | 49.68 | a | 40.96 | e | 29.16 | 56.17 | |||||
| 1949 | 15.60 | 31.80 | 44.31 | 54.48 | b | 63.60 | a | 66.65 | 70.40 | 70.15 | 64.98 | 47.50 | b | 44.02 | 35.30 | f | 52.14 | |||||||||
| 1950 | 15.09 | d | 30.61 | 41.56 | 48.48 | 56.92 | 65.27 | 72.45 | a | 73.50 | d | 65.28 | a | 50.84 | c | 40.10 | d | ----- | z | 50.92 | ||||||
| 1951 | 33.91 | c | 37.00 | c | 39.68 | f | 52.02 | b | 59.38 | e | 66.00 | c | 73.19 | 70.39 | 62.43 | g | 51.62 | o | 37.62 | 28.87 | a | 50.93 | ||||
| 1952 | 25.65 | a | 36.90 | 42.98 | b | 52.29 | a | 59.79 | 64.03 | a | 72.55 | 70.92 | 64.25 | 54.86 | m | 32.28 | a | 34.16 | 50.53 | |||||||
| 1953 | 43.36 | c | 40.06 | b | 44.76 | d | 48.93 | 54.81 | b | 60.33 | 71.46 | g | 68.35 | n | 63.40 | 53.86 | j | 43.98 | c | 39.72 | b | 48.82 | ||||
| 1954 | 30.80 | a | 39.24 | a | 41.44 | 50.47 | 59.73 | 61.89 | b | 70.45 | b | 67.77 | 61.58 | 47.50 | m | 45.91 | c | 33.63 | 51.17 | |||||||
| 1955 | 31.34 | 36.11 | 39.02 | 46.35 | 55.94 | 67.63 | 69.29 | 70.97 | 63.69 | a | 51.04 | h | 39.30 | j | 30.09 | b | 51.04 | |||||||||
| 1956 | 31.85 | 25.11 | a | 43.23 | 54.61 | b | 62.35 | 63.92 | 74.93 | b | 70.77 | 63.43 | 51.12 | o | 36.06 | l | 36.03 | b | 52.62 | |||||||
| 1957 | 17.68 | 34.64 | 43.10 | 51.87 | 63.45 | 68.42 | 70.11 | 68.66 | c | 64.95 | 48.78 | k | 39.28 | n | 39.05 | i | 53.65 | |||||||||
| 1958 | 37.39 | 44.41 | 42.48 | c | 49.92 | 66.40 | 71.09 | a | 76.42 | e | 75.11 | 61.63 | 54.97 | o | 42.30 | g | 34.45 | b | 55.93 | |||||||
| 1959 | 32.13 | 34.88 | 43.68 | f | 52.90 | 56.58 | a | 66.98 | 73.87 | d | 69.26 | 61.15 | c | 50.97 | m | 37.54 | g | 33.08 | 53.43 | |||||||
| 1960 | 21.53 | b | 37.71 | a | 42.98 | 51.22 | 57.48 | 67.07 | 75.88 | f | 68.27 | 62.92 | 54.16 | f | 40.62 | i | 29.60 | 48.75 | ||||||||
| 1961 | 35.26 | 44.70 | 45.17 | b | 51.13 | 58.82 | 71.13 | 76.14 | b | 76.09 | b | 60.55 | ----- | z | 33.95 | j | 35.00 | 55.40 | ||||||||
| 1962 | 32.11 | 38.04 | 41.31 | 54.82 | 56.08 | 65.02 | 71.29 | 68.50 | 64.35 | 52.32 | l | 43.07 | h | 37.67 | b | 52.92 | ||||||||||
| 1963 | 26.03 | a | 38.02 | 45.45 | a | 48.88 | b | 58.79 | 66.03 | 67.92 | 70.98 | 67.02 | 55.17 | p | 42.11 | l | 30.69 | b | 51.98 | |||||||
| 1964 | 36.58 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 36.58 | ||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 30.49 | 36.63 | 45.77 | 53.17 | 60.35 | 67.20 | 73.78 | 71.47 | 63.57 | 53.37 | 41.13 | 33.60 | 53.26 | |||||||||||||
| S.D. | 7.50 | 5.39 | 2.96 | 2.85 | 2.90 | 2.50 | 2.48 | 2.10 | 2.18 | 2.54 | 3.70 | 4.59 | 1.12 | |||||||||||||
| SKEW | -0.69 | -0.74 | -0.24 | 0.11 | 0.14 | -0.39 | -0.43 | 0.42 | 0.00 | -0.57 | -0.54 | -0.18 | 0.05 | |||||||||||||
| MAX | 43.36 | 46.43 | 51.18 | 59.32 | 66.40 | 71.30 | 80.66 | 76.18 | 68.55 | 57.35 | 48.53 | 44.03 | 55.72 | |||||||||||||
| MIN | 13.57 | 21.54 | 39.02 | 46.35 | 54.81 | 60.33 | 66.66 | 67.77 | 58.42 | 47.26 | 32.28 | 21.29 | 50.86 | |||||||||||||
| NO YRS | 49 | 50 | 48 | 52 | 53 | 52 | 53 | 52 | 50 | 40 | 40 | 45 | 16 | |||||||||||||