| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1905 | ----- | z | 24.21 | 36.16 | 38.17 | 46.06 | 53.53 | 58.35 | 54.77 | 50.37 | 34.23 | 25.83 | 29.29 | 41.00 | ||||||||||||
| 1906 | 29.00 | 34.36 | 30.94 | 40.03 | 47.32 | 51.20 | 63.03 | 55.23 | 49.40 | 40.43 | a | 34.10 | 31.38 | o | 43.19 | |||||||||||
| 1907 | 18.80 | z | 30.36 | 34.00 | h | 36.83 | 47.52 | 51.43 | 57.48 | 53.27 | a | 45.75 | b | 39.42 | 31.37 | ----- | z | 43.71 | ||||||||
| 1908 | 27.97 | 27.31 | 36.35 | 39.10 | 44.68 | 52.00 | 59.00 | c | 55.03 | 46.97 | 37.33 | a | 32.50 | 26.81 | 40.42 | |||||||||||
| 1909 | 15.42 | 32.93 | 32.06 | 35.67 | 44.71 | 55.53 | 55.61 | 50.71 | 49.37 | 40.48 | 36.70 | 21.58 | 39.23 | |||||||||||||
| 1910 | 22.48 | 23.11 | 37.55 | 42.03 | 48.03 | 49.92 | d | 55.22 | d | 49.94 | 44.47 | 39.55 | 33.96 | b | 31.68 | 39.83 | ||||||||||
| 1911 | 26.79 | g | 25.50 | 31.84 | 35.31 | a | 43.29 | 55.37 | 58.75 | c | 52.17 | a | 47.86 | a | ----- | z | ----- | z | ----- | z | 43.76 | |||||
| 1912 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 27.00 | 27.00 | ||
| 1913 | 19.74 | 20.54 | 32.20 | f | 40.23 | 44.21 | b | 52.73 | 56.81 | 56.10 | 43.17 | 37.84 | 34.73 | 27.77 | 39.44 | |||||||||||
| 1914 | 31.55 | 30.64 | 34.97 | 40.90 | a | 46.10 | 50.63 | 54.71 | 52.33 | a | 47.07 | 41.55 | 33.17 | 17.74 | 40.11 | |||||||||||
| 1915 | 24.10 | 30.46 | 36.42 | 41.50 | 46.94 | 51.33 | 55.61 | 57.77 | 46.60 | 41.71 | 32.43 | 27.32 | 41.02 | |||||||||||||
| 1916 | 11.74 | 27.52 | 36.26 | 39.40 | 42.81 | 50.52 | g | 51.77 | 53.19 | 43.53 | 35.61 | 27.37 | 22.13 | 35.58 | ||||||||||||
| 1917 | 22.97 | 27.43 | 29.06 | 38.07 | 45.26 | 46.67 | 54.61 | 52.23 | 48.00 | 37.84 | 32.43 | 35.03 | a | 39.13 | ||||||||||||
| 1918 | 30.65 | 27.68 | 32.10 | 36.90 | 42.90 | 53.17 | 55.87 | 51.48 | 44.97 | 43.55 | 31.77 | 29.65 | 40.06 | |||||||||||||
| 1919 | 23.45 | 31.07 | 33.94 | 38.20 | 43.94 | 46.23 | 54.48 | ----- | z | 45.70 | 35.42 | 30.83 | 12.65 | 35.99 | ||||||||||||
| 1920 | 25.06 | 26.48 | 33.16 | 38.00 | 40.84 | 45.10 | 57.71 | 54.87 | 48.30 | 40.77 | 31.37 | 32.13 | 39.48 | |||||||||||||
| 1921 | 29.16 | 32.39 | 34.26 | 38.27 | 44.40 | a | 53.77 | 53.13 | 53.23 | 45.07 | 37.90 | 31.83 | 26.00 | 39.95 | ||||||||||||
| 1922 | 14.52 | 23.25 | 30.39 | 35.90 | 41.94 | 55.87 | g | 56.23 | 57.24 | j | 46.40 | 39.39 | 32.17 | 18.74 | 33.89 | |||||||||||
| 1923 | 32.13 | 20.68 | 32.81 | 38.03 | 46.19 | 52.31 | a | 58.16 | 55.61 | 46.80 | 39.97 | 33.63 | 28.77 | 40.43 | ||||||||||||
| 1924 | 19.03 | 35.00 | 32.52 | 34.40 | 44.81 | 51.73 | 55.90 | 52.71 | 47.23 | 40.35 | 33.40 | 19.20 | a | 38.86 | ||||||||||||
| 1925 | 30.10 | 35.00 | 34.94 | 40.30 | 47.23 | 51.90 | 56.48 | 53.29 | 46.67 | 36.10 | 29.77 | 32.61 | 41.20 | |||||||||||||
| 1926 | 30.42 | 33.86 | 33.13 | 40.00 | 44.58 | 52.50 | 56.00 | b | 51.90 | a | 41.50 | 38.87 | 31.67 | 22.58 | 39.75 | |||||||||||
| 1927 | 23.73 | a | 31.21 | 31.81 | 35.63 | 43.74 | 51.57 | 54.26 | 54.94 | 48.69 | a | 39.87 | a | 36.27 | 20.03 | 39.31 | ||||||||||
| 1928 | 23.68 | 25.03 | 33.87 | 36.83 | 44.68 | 52.13 | 56.87 | 51.29 | 43.07 | 38.81 | 30.25 | b | 24.19 | 38.39 | ||||||||||||
| 1929 | 15.26 | 9.96 | 35.29 | 37.00 | a | 44.19 | 52.00 | 54.32 | 53.94 | 44.33 | 37.16 | 19.28 | a | 28.58 | 35.94 | |||||||||||
| 1930 | 2.23 | 32.68 | 35.13 | a | 40.24 | a | 44.87 | 49.66 | a | 55.23 | 55.03 | 48.03 | 34.77 | 30.60 | 28.10 | 38.05 | ||||||||||
| 1931 | 30.73 | i | 28.59 | a | 34.80 | a | 38.07 | a | 46.87 | 52.03 | 56.37 | a | 52.35 | 50.04 | c | 36.55 | 30.14 | b | 22.38 | b | 40.74 | |||||
| 1932 | 22.42 | 32.55 | i | 36.84 | 40.37 | 44.61 | 51.57 | 52.23 | 53.07 | a | 44.10 | 41.58 | 34.93 | 21.35 | 40.28 | |||||||||||
| 1933 | 28.10 | 21.57 | 33.74 | 36.55 | a | 42.52 | 50.07 | 52.79 | b | 53.26 | 46.03 | a | 39.53 | a | 33.30 | 35.19 | 39.39 | |||||||||
| 1934 | 31.87 | 31.43 | e | 34.23 | a | 43.87 | 47.32 | 51.17 | 55.13 | a | 54.00 | 47.57 | 44.97 | a | 40.60 | 33.15 | d | 42.94 | ||||||||
| 1935 | 28.94 | 30.21 | 33.58 | 34.83 | a | 44.13 | a | 51.79 | b | 56.45 | 50.58 | 47.70 | 36.77 | 26.77 | 29.03 | a | 39.23 | |||||||||
| 1936 | 31.03 | a | 13.26 | b | 33.39 | 42.40 | 48.90 | 55.40 | 55.52 | ----- | z | ----- | z | 37.87 | 19.83 | 28.55 | 36.62 | |||||||||
| 1937 | 5.27 | a | 21.86 | 35.94 | 40.43 | 44.87 | 53.67 | 58.26 | 51.55 | 47.93 | a | 39.61 | c | 38.94 | m | 31.90 | 39.21 | |||||||||
| 1938 | 28.64 | f | 27.93 | 32.00 | a | 35.86 | a | 42.55 | 52.00 | 57.61 | 51.03 | 51.07 | a | 41.63 | d | 27.17 | a | 26.52 | 40.49 | |||||||
| 1939 | 29.16 | 25.96 | 34.77 | 37.57 | 44.77 | 49.17 | a | 53.83 | y | 54.03 | 47.14 | h | 37.84 | ----- | z | 33.00 | z | 39.16 | ||||||||
| 1940 | 26.77 | ----- | z | 35.78 | v | 41.83 | 47.26 | 52.77 | 57.13 | 54.10 | a | 50.93 | 43.35 | 27.45 | a | 26.74 | 42.83 | |||||||||
| 1941 | ----- | z | 28.89 | a | 34.87 | a | 40.69 | a | 45.68 | 50.67 | 58.73 | a | 55.42 | 45.73 | 38.97 | 32.63 | 29.48 | 41.98 | ||||||||
| 1942 | 19.84 | 29.82 | ----- | z | ----- | z | ----- | z | 53.30 | t | 58.23 | 58.58 | 48.43 | 40.84 | 32.70 | 27.97 | 39.55 | |||||||||
| 1943 | 17.10 | b | 28.68 | c | 29.87 | 39.74 | c | 41.71 | 47.70 | 54.48 | 51.94 | 47.47 | 39.14 | b | ----- | z | 24.86 | b | 38.43 | |||||||
| 1944 | 22.17 | a | 27.33 | k | 27.52 | b | 36.80 | 43.65 | 49.38 | a | 53.96 | c | 50.70 | d | 46.79 | b | 39.03 | b | 29.36 | b | 23.97 | b | 38.48 | |||
| 1945 | 29.06 | ----- | z | ----- | z | ----- | z | ----- | z | 49.42 | d | 55.15 | d | 53.13 | 44.75 | b | 40.60 | f | 32.43 | p | ----- | z | 46.30 | |||
| 1946 | ----- | z | ----- | z | ----- | z | 38.94 | m | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 27.40 | p | 9999.00 | |
| 1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 56.23 | 54.00 | a | 54.16 | 47.20 | 35.93 | a | 31.52 | e | 21.19 | 42.89 | |||||
| 1949 | 4.90 | 21.61 | 33.32 | 37.68 | b | 48.30 | a | 49.87 | 52.84 | 52.77 | 50.30 | 33.97 | b | 35.03 | 25.48 | f | 38.24 | |||||||||
| 1950 | 5.15 | d | 22.21 | 30.74 | 34.60 | 41.10 | 52.63 | 54.60 | a | 55.56 | d | 47.86 | a | 40.57 | c | 31.62 | d | ----- | z | 37.88 | ||||||
| 1951 | 26.18 | c | 27.20 | c | 27.48 | f | 35.07 | b | 43.38 | e | 51.00 | c | 55.06 | 52.42 | 46.35 | g | 39.94 | o | 27.67 | 20.03 | a | 37.56 | ||||
| 1952 | 18.43 | a | 26.76 | 30.48 | b | 34.90 | a | 44.26 | 49.79 | a | 54.61 | 53.39 | 46.93 | 38.83 | m | 22.28 | a | 28.00 | 37.26 | |||||||
| 1953 | 34.96 | c | 29.31 | b | 31.36 | c | 35.47 | 39.79 | b | 46.00 | 52.79 | g | 53.65 | n | 46.60 | 40.43 | j | 34.96 | c | 30.97 | b | 36.60 | ||||
| 1954 | 22.30 | a | 32.44 | a | 29.84 | 36.50 | 44.90 | 47.79 | b | 54.03 | b | 52.68 | 47.50 | 36.06 | m | 37.52 | c | 26.23 | 39.25 | |||||||
| 1955 | 26.06 | 26.43 | 27.68 | 33.93 | 42.32 | 52.37 | 55.03 | 52.65 | 48.48 | a | 38.87 | h | 31.05 | j | 23.59 | b | 38.85 | |||||||||
| 1956 | 25.06 | 17.55 | 32.84 | 38.75 | b | 48.65 | 49.07 | 58.34 | b | 54.26 | 47.37 | 38.06 | o | 28.94 | l | 28.79 | b | 40.07 | ||||||||
| 1957 | 10.35 | 25.21 | 32.68 | 38.40 | 50.74 | 53.17 | 53.77 | 52.34 | b | 49.70 | 40.80 | k | 28.69 | n | 31.26 | h | 40.71 | |||||||||
| 1958 | 30.16 | 35.54 | 31.21 | c | 38.50 | 50.87 | 56.41 | a | 59.19 | e | 56.32 | 46.23 | 40.69 | o | 32.22 | g | 28.38 | b | 43.28 | |||||||
| 1959 | 24.03 | 25.39 | 29.72 | f | 37.63 | 42.77 | a | 52.10 | 56.33 | d | 52.19 | 47.89 | c | 37.56 | m | 26.17 | g | 25.39 | 40.41 | |||||||
| 1960 | 13.86 | b | 26.82 | a | 29.74 | 37.03 | 43.23 | 50.00 | 57.20 | f | 51.94 | 45.80 | 39.48 | f | 29.57 | i | 24.13 | 35.84 | ||||||||
| 1961 | 28.52 | 35.64 | 34.28 | b | 37.77 | 45.90 | 54.03 | 59.38 | b | 59.07 | b | 45.70 | ----- | z | 23.15 | j | 26.16 | 42.64 | ||||||||
| 1962 | 22.97 | 28.46 | 30.00 | 39.40 | 43.94 | 48.27 | 53.48 | 52.45 | 48.53 | 41.00 | l | 32.55 | h | 31.76 | b | 39.93 | ||||||||||
| 1963 | 16.03 | a | 29.07 | 31.83 | a | 37.11 | b | 43.52 | 50.40 | 51.42 | 53.39 | 50.27 | 41.87 | p | 31.72 | l | 25.52 | b | 38.86 | |||||||
| 1964 | 26.87 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 26.87 | ||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 22.64 | 27.38 | 32.97 | 38.09 | 44.90 | 51.29 | 55.84 | 53.47 | 47.06 | 38.95 | 31.26 | 26.34 | 39.64 | |||||||||||||
| S.D. | 7.92 | 5.36 | 2.40 | 2.29 | 2.36 | 2.50 | 2.23 | 1.96 | 2.09 | 2.51 | 4.28 | 4.69 | 1.38 | |||||||||||||
| SKEW | -0.90 | -0.93 | -0.25 | 0.29 | 0.43 | -0.28 | 0.51 | 0.81 | -0.28 | 0.05 | -0.88 | -0.46 | -0.27 | |||||||||||||
| MAX | 34.96 | 35.64 | 37.55 | 43.87 | 50.87 | 56.41 | 63.03 | 59.07 | 51.07 | 44.97 | 40.60 | 35.19 | 42.94 | |||||||||||||
| MIN | 2.23 | 9.96 | 27.52 | 33.93 | 39.79 | 45.10 | 51.42 | 49.94 | 41.50 | 33.97 | 19.28 | 12.65 | 35.94 | |||||||||||||
| NO YRS | 50 | 51 | 48 | 53 | 53 | 53 | 53 | 52 | 53 | 41 | 42 | 49 | 20 | |||||||||||||