| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1894 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 52.13 | 45.77 | 42.60 | 32.57 | a | 43.27 | ||||
| 1895 | 28.71 | 35.21 | 36.39 | 41.47 | 48.58 | 52.00 | 56.35 | 53.90 | 48.13 | 45.10 | 37.20 | 35.19 | 43.19 | |||||||||||||
| 1896 | 33.45 | 39.69 | 36.48 | 39.97 | 46.10 | 52.43 | 59.13 | 57.84 | 50.93 | 48.10 | 33.03 | 36.13 | 44.44 | |||||||||||||
| 1897 | 33.58 | 37.00 | 36.32 | 43.73 | 50.84 | 54.60 | 56.19 | 60.00 | 51.70 | 46.19 | 39.27 | 33.97 | 45.28 | |||||||||||||
| 1898 | 34.65 | 39.43 | 36.90 | 43.03 | 47.61 | 53.10 | 55.68 | 59.35 | 53.20 | 45.26 | 37.77 | 30.81 | 44.73 | |||||||||||||
| 1899 | 31.87 | 30.11 | 36.39 | 41.87 | 45.68 | 50.23 | 57.16 | 54.84 | 52.83 | 45.23 | 45.60 | 36.81 | 44.05 | |||||||||||||
| 1900 | 37.19 | 34.43 | 44.19 | 44.33 | 49.71 | 54.33 | 55.84 | 55.68 | 51.10 | 45.74 | 41.03 | 42.23 | 46.32 | |||||||||||||
| 1901 | 35.16 | 37.07 | 42.39 | 43.00 | 50.77 | 53.93 | 57.71 | 60.42 | 53.70 | 54.19 | 44.60 | 39.40 | a | 47.70 | ||||||||||||
| 1902 | 33.71 | 34.32 | 37.87 | 40.20 | 48.52 | 50.47 | 54.16 | 54.61 | 50.80 | 46.71 | 39.10 | 31.97 | 43.54 | |||||||||||||
| 1903 | 35.32 | 29.14 | 35.97 | 39.97 | 46.26 | 54.10 | 54.06 | 55.35 | 50.70 | 45.55 | 37.60 | 32.81 | 43.07 | |||||||||||||
| 1904 | 34.90 | 32.24 | 35.23 | 42.63 | 44.57 | a | 50.13 | 56.29 | 55.40 | a | 48.77 | q | 46.13 | 43.63 | 35.61 | 43.34 | ||||||||||
| 1905 | 32.26 | 30.46 | 41.52 | 43.60 | 44.26 | d | 52.20 | 56.68 | 54.77 | a | 51.93 | a | 35.13 | 33.77 | 31.90 | 42.37 | ||||||||||
| 1906 | 34.23 | 36.68 | 34.29 | 41.93 | 47.68 | 49.73 | 59.77 | 56.41 | b | 50.70 | 45.84 | 39.24 | a | 34.52 | 44.25 | |||||||||||
| 1907 | 23.39 | c | 32.71 | 36.00 | 40.17 | 48.74 | 52.56 | c | 56.10 | 54.93 | a | 53.15 | c | 49.03 | b | 40.96 | b | 34.90 | 43.55 | |||||||
| 1908 | 32.53 | a | 32.85 | c | 36.50 | e | 40.78 | c | 43.50 | a | 49.85 | c | 56.57 | c | 55.42 | 46.48 | c | 44.60 | a | 39.57 | 32.19 | 42.57 | ||||
| 1909 | 22.39 | 35.04 | 36.94 | 40.20 | 45.53 | a | 51.67 | 54.42 | 51.94 | 51.77 | 45.39 | 38.97 | 27.52 | 41.81 | ||||||||||||
| 1910 | 27.19 | 30.39 | 40.55 | 42.93 | 47.45 | 50.33 | 55.32 | 53.48 | 49.17 | 47.68 | 38.73 | 36.39 | 43.30 | |||||||||||||
| 1911 | 30.81 | 31.57 | 35.26 | 36.93 | 44.81 | 51.07 | 56.84 | 55.52 | 49.17 | 44.58 | 37.30 | 34.61 | 42.37 | |||||||||||||
| 1912 | 29.03 | 36.93 | 34.77 | 40.07 | 47.23 | 51.80 | 55.26 | 54.77 | 50.30 | 40.84 | 39.97 | 33.90 | 42.91 | |||||||||||||
| 1913 | 29.45 | 28.71 | 34.87 | 40.60 | 45.65 | 52.70 | 56.16 | 56.94 | 51.20 | 44.10 | 39.30 | 32.32 | 42.67 | |||||||||||||
| 1914 | 36.13 | 35.18 | 40.74 | 42.37 | 47.90 | 51.07 | 54.55 | 55.55 | 50.07 | 48.26 | 39.57 | 27.52 | 44.07 | |||||||||||||
| 1915 | 30.16 | 35.57 | 41.71 | 43.10 | 46.94 | 51.60 | 57.03 | 57.90 | 51.13 | 46.00 | 37.43 | 34.68 | 44.44 | |||||||||||||
| 1916 | 19.19 | 30.79 | 36.16 | 41.00 | 42.97 | 48.63 | 53.35 | 54.10 | 50.53 | 41.26 | 33.97 | 31.26 | 40.27 | |||||||||||||
| 1917 | 31.26 | 33.00 | 33.10 | 39.37 | 45.77 | 48.47 | 55.00 | 56.23 | 53.53 | 46.16 | 40.17 | 41.00 | 43.59 | |||||||||||||
| 1918 | 38.06 | 32.54 | 36.68 | 39.83 | 43.97 | 51.37 | 55.06 | 56.00 | 55.60 | 47.74 | 38.03 | 34.32 | 44.10 | |||||||||||||
| 1919 | 31.03 | 34.43 | 37.03 | 41.87 | 45.35 | 48.43 | 53.97 | 56.03 | 51.57 | 41.32 | 37.43 | 21.97 | 41.70 | |||||||||||||
| 1920 | 30.26 | 32.07 | 36.90 | 38.83 | 42.58 | 51.00 | 56.45 | 56.45 | 51.33 | 45.13 | 36.87 | 36.26 | 42.84 | |||||||||||||
| 1921 | 33.35 | 35.21 | 38.06 | 40.57 | 44.35 | 53.53 | 53.94 | 54.90 | 47.93 | 44.74 | 37.90 | 30.35 | 42.90 | |||||||||||||
| 1922 | 24.84 | 30.25 | 34.26 | 38.97 | 45.10 | 52.00 | 55.23 | 56.32 | 51.63 | 46.42 | 36.53 | 26.90 | 41.54 | |||||||||||||
| 1923 | 35.19 | 27.21 | 35.10 | 41.70 | 46.61 | 51.64 | h | 56.29 | 56.55 | 50.97 | 45.35 | 40.77 | 33.35 | 42.65 | ||||||||||||
| 1924 | 28.48 | 37.66 | 35.29 | 40.13 | 46.52 | 50.77 | 55.13 | 55.32 | 49.83 | 44.68 | 36.97 | 25.52 | 42.19 | |||||||||||||
| 1925 | 34.48 | 37.57 | 36.26 | 42.27 | 47.26 | 52.47 | 56.45 | 54.35 | 51.50 | 42.81 | 37.33 | 38.06 | 44.23 | |||||||||||||
| 1926 | 34.65 | 38.86 | 40.03 | 45.70 | 46.39 | 53.50 | 56.35 | 56.03 | 49.17 | a | 47.39 | 40.43 | 31.55 | 45.00 | ||||||||||||
| 1927 | 29.48 | 35.36 | 35.39 | 39.03 | 44.61 | 52.23 | 55.52 | 56.35 | 52.23 | 45.39 | 42.13 | 30.03 | 43.15 | |||||||||||||
| 1928 | 28.90 | 32.59 | 41.32 | 41.93 | 46.71 | 53.00 | 56.84 | 54.29 | 50.20 | 45.45 | 38.77 | 31.52 | 43.46 | |||||||||||||
| 1929 | 24.71 | 23.89 | 38.71 | 39.47 | 45.77 | 50.80 | 53.48 | 56.00 | 49.03 | 45.42 | 34.37 | 36.45 | 41.51 | |||||||||||||
| 1930 | 17.42 | 35.61 | 37.35 | 43.43 | 45.52 | 49.07 | 55.03 | 56.39 | 51.43 | 42.45 | 37.93 | 32.62 | b | 42.02 | ||||||||||||
| 1931 | 34.19 | 34.39 | 38.19 | 41.13 | 47.61 | 51.13 | 54.45 | 54.16 | 49.37 | 44.52 | 36.00 | 28.81 | 42.83 | |||||||||||||
| 1932 | 30.87 | 30.48 | 38.74 | 41.90 | 45.77 | 52.07 | 53.35 | 54.03 | 49.10 | a | 46.16 | 40.30 | 28.84 | 42.64 | ||||||||||||
| 1933 | 33.16 | 27.86 | 36.13 | 39.60 | 44.77 | 50.60 | 53.61 | 55.42 | 48.70 | 45.00 | 38.67 | 38.81 | 42.69 | |||||||||||||
| 1934 | 38.55 | 39.36 | 42.45 | 47.03 | 49.68 | 52.10 | 55.55 | 56.45 | 51.80 | 47.26 | 43.27 | 37.77 | 46.77 | |||||||||||||
| 1935 | 30.71 | 35.18 | 35.87 | 39.33 | 44.48 | 51.53 | 55.10 | 54.26 | 52.07 | 43.97 | 33.37 | 33.32 | 42.43 | |||||||||||||
| 1936 | 35.32 | 23.30 | b | 35.29 | 44.00 | 48.74 | 53.50 | 56.06 | 57.06 | 50.40 | 46.77 | 34.07 | 37.71 | 43.52 | ||||||||||||
| 1937 | 19.97 | 30.21 | 38.90 | 41.63 | 46.45 | 53.10 | 57.29 | 54.81 | 52.77 | 48.97 | 42.67 | 36.52 | 43.61 | |||||||||||||
| 1938 | 34.26 | 33.14 | 36.39 | 42.63 | 45.84 | 52.00 | 57.45 | 54.00 | 54.00 | 47.39 | 36.57 | 34.90 | 44.05 | |||||||||||||
| 1939 | 36.61 | 32.43 | 37.16 | 42.93 | 47.81 | 50.57 | 54.94 | 55.26 | 51.57 | 47.23 | 39.77 | 38.26 | 44.54 | |||||||||||||
| 1940 | 32.48 | 37.72 | 40.65 | 44.50 | 48.35 | 53.70 | 57.84 | 56.84 | 54.93 | 49.81 | 36.27 | 34.70 | a | 45.65 | ||||||||||||
| 1941 | 33.03 | 36.11 | 40.74 | 43.50 | 48.58 | 53.07 | 58.94 | 57.58 | 52.03 | 46.55 | 39.77 | 35.87 | 45.48 | |||||||||||||
| 1942 | 26.23 | 34.50 | 36.61 | 43.80 | 46.68 | 51.27 | 58.52 | 58.65 | 52.47 | 46.52 | 37.90 | 35.48 | 44.05 | |||||||||||||
| 1943 | 25.87 | 33.50 | 35.84 | 43.73 | 45.00 | 50.10 | 55.94 | 54.84 | 53.37 | 46.87 | 38.80 | 32.97 | 43.07 | |||||||||||||
| 1944 | 30.97 | 34.66 | 35.71 | 42.07 | 46.74 | 50.80 | 56.87 | 56.55 | 52.13 | 48.68 | 38.90 | 32.90 | a | 43.91 | ||||||||||||
| 1945 | 37.00 | 35.61 | 36.77 | 41.07 | 48.35 | 50.20 | 56.32 | 56.10 | 49.93 | 45.00 | 38.53 | 32.68 | 43.96 | |||||||||||||
| 1946 | 34.23 | 34.82 | 38.16 | 40.33 | 48.81 | 50.07 | 56.23 | 55.29 | 51.33 | 42.74 | 35.60 | 36.13 | 43.64 | |||||||||||||
| 1947 | 29.90 | 35.96 | 39.84 | 43.00 | 49.52 | 52.00 | 56.16 | 55.13 | 51.90 | 48.48 | 41.27 | 36.55 | 44.98 | |||||||||||||
| 1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 54.58 | 56.35 | 49.77 | 45.10 | 38.23 | 31.06 | 45.85 | |||||||
| 1949 | 19.42 | 31.36 | 37.55 | 42.50 | 48.74 | 49.87 | 54.77 | 56.10 | 52.20 | 40.42 | 43.07 | 35.52 | 42.63 | |||||||||||||
| 1950 | 18.45 | 27.25 | 36.52 | 40.13 | 44.06 | 52.83 | 55.39 | 57.19 | 50.63 | 45.58 | 39.27 | 38.87 | 42.18 | |||||||||||||
| 1951 | 32.19 | 33.18 | 33.32 | 41.70 | 45.55 | 51.83 | 56.13 | 54.53 | a | 52.17 | 46.52 | 38.47 | 31.60 | a | 43.10 | |||||||||||
| 1952 | 27.81 | 32.72 | 36.77 | 40.27 | 45.35 | 50.83 | 55.84 | 56.39 | 51.57 | 48.97 | 34.27 | 33.97 | 42.90 | |||||||||||||
| 1953 | 41.10 | 36.89 | 38.29 | 41.47 | 44.45 | 48.77 | 52.26 | 53.97 | 50.10 | 44.87 | 40.00 | 37.10 | 44.10 | |||||||||||||
| 1954 | 29.90 | 33.52 | a | 31.75 | c | 38.93 | 44.23 | 47.79 | p | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 35.67 | ||||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 30.84 | 33.49 | 37.30 | 41.60 | 46.50 | 51.53 | 55.81 | 55.78 | 51.21 | 45.67 | 38.68 | 33.82 | 43.53 | |||||||||||||
| S.D. | 5.25 | 3.55 | 2.51 | 1.89 | 1.93 | 1.53 | 1.48 | 1.55 | 1.69 | 2.67 | 2.75 | 3.75 | 1.35 | |||||||||||||
| SKEW | -0.83 | -0.67 | 0.62 | 0.27 | 0.24 | -0.10 | 0.21 | 0.74 | -0.08 | -0.70 | 0.13 | -0.54 | 0.63 | |||||||||||||
| MAX | 41.10 | 39.69 | 44.19 | 47.03 | 50.84 | 54.60 | 59.77 | 60.42 | 55.60 | 54.19 | 45.60 | 42.23 | 47.70 | |||||||||||||
| MIN | 17.42 | 23.30 | 31.75 | 36.93 | 42.58 | 48.43 | 52.26 | 51.94 | 46.48 | 35.13 | 33.03 | 21.97 | 40.27 | |||||||||||||
| NO YRS | 59 | 59 | 59 | 59 | 59 | 57 | 59 | 59 | 59 | 60 | 60 | 60 | 56 | |||||||||||||