YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1877 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 50.74 | 51.23 | 47.60 | 43.77 | 40.10 | 37.94 | 45.23 | f | ||||||
1878 | 36.23 | a | 39.07 | 41.48 | 40.70 | 45.32 | 47.67 | 50.42 | 50.52 | 45.27 | 41.39 | 40.37 | 35.84 | 42.86 | ||||||||||||
1879 | 30.65 | 35.46 | 38.42 | 39.93 | 44.55 | 47.13 | 49.35 | 50.16 | 48.00 | 41.87 | 34.87 | 32.94 | 41.11 | |||||||||||||
1880 | 31.55 | 31.86 | h | 32.68 | 36.70 | 41.23 | 46.87 | 50.35 | 49.10 | 46.03 | 43.80 | u | 32.65 | d | 34.63 | a | 40.18 | b | ||||||||
1881 | 33.97 | 38.43 | 39.94 | 42.43 | 41.35 | 48.20 | 48.74 | ----- | z | 46.70 | 41.10 | 39.17 | 37.06 | 41.55 | a | |||||||||||
1882 | 33.10 | 31.50 | 35.23 | 37.40 | 42.13 | 49.93 | 50.32 | 49.61 | 45.80 | 43.65 | 35.40 | 38.26 | 41.03 | |||||||||||||
1883 | 31.29 | 27.29 | 37.48 | 39.90 | 42.97 | 45.60 | 48.23 | 55.10 | 48.13 | 42.87 | 41.87 | 35.39 | 41.34 | |||||||||||||
1884 | 35.23 | 27.52 | 34.42 | 41.70 | 43.94 | 48.97 | 49.90 | 53.84 | 48.60 | 43.74 | 43.30 | 28.10 | 41.60 | |||||||||||||
1885 | 35.55 | 39.89 | 37.74 | 36.33 | 44.26 | 49.30 | 50.77 | 48.97 | 49.73 | 41.19 | 39.93 | 37.81 | 42.62 | |||||||||||||
1886 | 30.61 | 37.04 | 35.90 | a | 38.87 | 43.29 | 47.80 | 50.00 | 51.71 | 46.57 | 41.68 | 35.63 | 40.06 | 41.60 | ||||||||||||
1887 | 36.52 | 24.00 | 37.16 | 38.83 | 43.77 | 45.17 | 48.03 | 49.06 | 45.53 | 42.00 | 37.70 | 36.71 | 40.37 | |||||||||||||
1888 | 26.10 | 37.31 | 36.06 | 40.60 | 43.06 | 50.40 | 49.23 | 50.16 | 49.37 | 47.23 | 38.00 | 37.23 | 42.06 | |||||||||||||
1889 | 31.80 | a | 36.68 | 39.97 | 39.33 | 45.42 | 46.93 | 50.26 | 48.90 | 44.23 | 45.77 | 39.57 | 32.10 | 41.75 | ||||||||||||
1890 | 27.77 | 29.96 | a | 36.68 | 37.07 | 43.45 | 47.20 | 49.03 | 49.52 | 43.67 | 41.55 | 39.30 | 39.65 | 40.40 | ||||||||||||
1891 | 37.66 | b | 30.85 | a | 34.71 | 40.57 | 44.74 | 48.37 | 49.52 | 51.35 | 48.03 | 45.84 | 42.27 | 35.97 | a | 42.49 | ||||||||||
1892 | 34.23 | 35.45 | 40.06 | 38.20 | 44.19 | 47.77 | 48.84 | 49.00 | 49.10 | 44.81 | 40.30 | 34.27 | a | 42.18 | ||||||||||||
1893 | 30.93 | b | 31.96 | 35.52 | 38.97 | 44.42 | 45.00 | 47.84 | 48.32 | 46.20 | 39.70 | a | 34.83 | 38.10 | 40.15 | |||||||||||
1894 | 33.52 | 31.54 | 33.73 | a | 39.13 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 34.48 | h | |||
1895 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 36.42 | e | 36.42 | k |
1896 | 35.61 | 37.25 | a | 34.26 | 36.82 | b | 43.50 | e | 45.43 | 50.23 | 50.74 | 44.50 | 42.10 | 31.65 | d | 39.00 | d | 40.92 | ||||||||
1897 | 33.65 | 35.79 | 32.71 | 38.90 | 43.42 | 47.97 | 48.29 | 51.84 | 45.27 | 41.06 | 38.03 | a | 38.20 | a | 41.26 | |||||||||||
1898 | 34.48 | 38.46 | 33.61 | 37.48 | a | 41.32 | 48.40 | 49.80 | a | 52.63 | a | 48.07 | 41.58 | 39.31 | a | 33.71 | 41.57 | |||||||||
1899 | 36.84 | 33.75 | 35.50 | a | 38.67 | 42.26 | 46.47 | 49.77 | 50.81 | 47.33 | 42.45 | 45.47 | 38.74 | 42.34 | ||||||||||||
1900 | 36.35 | 36.75 | 40.39 | 38.70 | 45.65 | 50.70 | 50.26 | 49.29 | 46.53 | 42.35 | 35.87 | 40.77 | 42.80 | |||||||||||||
1901 | 34.94 | 34.61 | 37.13 | 35.87 | 43.39 | 46.17 | 46.58 | 47.84 | 44.33 | 46.23 | a | 41.13 | 36.23 | 41.20 | ||||||||||||
1902 | 32.97 | 38.78 | a | 37.19 | 39.27 | 45.56 | d | 45.33 | 48.52 | 47.00 | 43.67 | 44.94 | 40.31 | a | 36.03 | 41.63 | ||||||||||
1903 | 37.94 | 29.07 | 31.87 | a | 36.30 | 42.70 | a | 49.90 | 47.58 | 49.87 | 46.07 | 43.77 | 40.70 | 35.84 | f | 41.43 | a | |||||||||
1904 | 36.61 | 32.86 | 35.47 | a | 40.23 | 39.87 | 43.80 | 49.61 | 46.29 | 43.53 | 43.68 | 41.07 | 35.81 | 40.74 | ||||||||||||
1905 | 32.71 | 30.82 | 39.10 | 37.59 | a | 41.42 | 48.90 | 51.10 | 49.10 | 46.87 | 36.67 | a | 34.73 | 34.55 | 40.30 | |||||||||||
1906 | 36.06 | 34.61 | 33.16 | 37.13 | 44.29 | g | 46.67 | 51.32 | 48.68 | 45.81 | c | 43.21 | g | 39.83 | 37.11 | c | 41.04 | b | ||||||||
1907 | 26.84 | 36.70 | a | 33.07 | a | 36.17 | a | 44.77 | 47.73 | 51.04 | c | 49.96 | f | 48.53 | 46.42 | 40.30 | 36.48 | 40.73 | a | |||||||
1908 | 35.45 | i | 33.76 | 35.16 | 36.43 | 40.03 | 44.93 | 50.00 | 47.81 | 42.20 | 40.06 | 40.60 | 34.00 | b | 40.45 | a | ||||||||||
1909 | 29.06 | 35.61 | 34.13 | 34.70 | 38.68 | 44.70 | 47.42 | 45.00 | 44.90 | 41.81 | 39.40 | 29.00 | 38.70 | |||||||||||||
1910 | 31.00 | 31.32 | 38.00 | a | 37.80 | 42.16 | 44.20 | 45.58 | 45.19 | 43.63 | 45.06 | 38.67 | 36.77 | a | 39.95 | |||||||||||
1911 | 32.10 | 31.18 | 32.90 | 32.17 | 40.71 | 43.27 | 48.16 | 47.32 | 44.07 | 39.20 | a | 37.47 | 34.65 | 38.60 | ||||||||||||
1912 | 34.94 | 35.24 | 31.35 | 36.47 | 42.55 | 45.43 | 50.06 | 48.23 | 43.70 | 37.94 | 38.07 | 35.65 | 39.97 | |||||||||||||
1913 | 30.74 | 30.68 | 32.45 | 37.53 | 41.74 | 47.67 | 48.32 | 48.03 | 44.03 | 41.39 | 38.73 | 34.87 | 39.68 | |||||||||||||
1914 | 37.10 | 35.89 | 38.06 | 40.40 | 42.77 | 47.50 | 49.26 | 49.26 | 47.17 | 45.23 | a | 40.53 | 30.10 | a | 41.94 | |||||||||||
1915 | 31.65 | 36.14 | 38.03 | 41.03 | 44.94 | 47.23 | 52.87 | 52.52 | 47.23 | 44.48 | b | 38.00 | c | 37.42 | 42.63 | |||||||||||
1916 | 25.17 | a | 33.97 | 37.84 | 40.10 | 41.55 | 46.50 | 50.32 | 50.55 | 47.50 | 37.65 | 37.37 | 34.29 | 40.23 | ||||||||||||
1917 | 32.50 | a | 34.25 | 33.71 | 39.13 | 42.23 | 45.10 | 46.03 | 47.19 | 46.43 | 44.23 | 41.83 | 40.26 | 41.07 | ||||||||||||
1918 | 32.23 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 32.23 | k | |
1919 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 46.52 | j | 46.13 | 39.10 | a | 36.83 | ----- | z | 40.69 | i | ||
1920 | 33.19 | 31.76 | 34.39 | ----- | z | 37.45 | 45.30 | 49.26 | 48.81 | 48.40 | 43.90 | 34.77 | 35.52 | 40.25 | a | |||||||||||
1921 | 30.19 | 32.14 | 35.39 | 33.87 | 37.52 | 45.53 | 44.19 | 46.45 | 43.20 | 40.35 | 38.40 | 30.00 | 38.10 | |||||||||||||
1922 | 27.50 | s | ----- | z | 30.97 | 34.50 | 40.39 | 46.79 | a | 46.39 | ----- | z | 49.10 | 43.00 | 32.53 | 27.23 | 38.99 | c | ||||||||
1923 | ----- | z | ----- | z | ----- | z | 39.07 | 43.74 | 46.77 | 50.24 | b | 50.71 | 46.03 | 41.81 | 37.70 | 35.57 | a | 43.51 | c | |||||||
1924 | 32.30 | a | 38.45 | 32.87 | 36.77 | 41.77 | 45.37 | ----- | z | 59.84 | ----- | z | ----- | z | ----- | z | ----- | z | 41.05 | e | ||||||
1925 | ----- | z | 37.83 | d | 36.35 | 40.32 | b | 45.39 | 46.83 | 50.68 | 49.93 | a | 47.32 | h | 40.27 | a | 35.87 | 38.40 | a | 42.19 | b | |||||
1926 | 35.14 | b | 38.33 | a | 37.50 | a | 42.60 | 45.37 | a | 47.54 | b | 50.23 | 50.65 | 43.68 | b | 44.73 | a | 40.57 | b | 34.47 | a | 42.57 | ||||
1927 | 33.33 | a | 32.68 | 34.39 | 37.69 | a | 42.32 | 49.90 | 51.20 | a | 51.35 | 46.70 | c | 44.59 | b | 40.07 | 30.68 | 41.24 | ||||||||
1928 | 34.90 | a | 33.41 | 39.06 | 37.53 | 43.52 | 48.53 | 51.26 | 49.23 | 45.45 | a | 44.71 | 39.10 | a | 32.81 | 41.63 | ||||||||||
1929 | 28.27 | a | 25.00 | 34.62 | b | 35.25 | b | 42.10 | 47.86 | a | 48.84 | 50.48 | 45.33 | 42.24 | b | 35.03 | a | 35.89 | c | 39.24 | ||||||
1930 | 20.21 | b | 33.81 | a | 34.93 | a | 40.07 | b | 40.97 | 47.10 | 48.03 | 50.71 | 47.97 | 38.70 | d | 36.66 | a | 32.40 | a | 39.30 | ||||||
1931 | 36.77 | a | 32.96 | 37.03 | a | 38.55 | a | 44.29 | 47.24 | a | 50.35 | 49.10 | 48.80 | 43.07 | c | 35.91 | g | 33.43 | a | 41.96 | a | |||||
1932 | 33.07 | b | 31.03 | 37.13 | 40.44 | c | 43.94 | 47.76 | a | 50.57 | a | 53.65 | 47.48 | a | 43.23 | 40.13 | 29.39 | 41.48 | ||||||||
1933 | 32.97 | b | 28.50 | 34.59 | b | 36.24 | a | 42.00 | 45.97 | 49.06 | 51.23 | 46.83 | 43.30 | a | 39.90 | 37.73 | a | 40.69 | ||||||||
1934 | 37.06 | 36.00 | 38.53 | a | 42.30 | 45.57 | a | 47.20 | 50.58 | 51.87 | 47.34 | a | 43.16 | 41.57 | 36.21 | b | 43.12 | |||||||||
1935 | 32.06 | 32.70 | a | 32.80 | a | 35.77 | 40.90 | 48.14 | b | 49.74 | 49.59 | b | 47.76 | a | 41.23 | 32.83 | a | 34.35 | 39.82 | |||||||
1936 | 35.29 | 26.64 | a | 33.39 | 41.41 | a | 45.23 | 50.03 | 50.26 | 51.03 | 45.83 | 43.35 | 32.97 | 37.03 | a | 41.04 | ||||||||||
1937 | 22.42 | 31.11 | 36.83 | a | 38.80 | 42.26 | 49.73 | 51.16 | 50.71 | 48.43 | 48.81 | 45.60 | e | 38.23 | 42.01 | |||||||||||
1938 | 35.32 | 34.00 | d | 35.77 | a | 39.93 | 43.71 | 48.00 | 51.55 | 47.65 | 45.93 | 41.84 | 34.24 | a | 34.40 | a | 41.03 | |||||||||
1939 | 36.58 | 30.75 | 34.74 | 39.47 | 42.47 | a | 47.33 | 50.71 | 49.97 | 45.87 | 43.84 | 39.21 | a | 38.87 | 41.65 | |||||||||||
1940 | 34.47 | a | 37.21 | 38.81 | 41.62 | a | 45.29 | 48.13 | 50.97 | 51.58 | 51.34 | a | 45.63 | a | 34.77 | 35.70 | a | 42.96 | ||||||||
1941 | 35.13 | 33.75 | 37.26 | 40.33 | 44.48 | 48.79 | a | 53.35 | 52.29 | 48.28 | a | 44.48 | 39.34 | a | 35.10 | 42.72 | ||||||||||
1942 | 28.90 | a | 32.42 | b | 32.52 | 39.07 | a | 44.53 | a | 47.10 | 54.10 | a | 53.10 | 46.83 | 41.48 | 35.57 | 36.10 | 40.98 | ||||||||
1943 | 26.19 | 31.96 | 31.94 | 38.43 | 41.23 | 46.17 | 49.65 | 48.39 | 45.10 | 41.81 | 35.13 | 30.45 | 38.87 | |||||||||||||
1944 | 30.58 | 31.79 | 32.74 | 38.37 | 40.45 | 45.68 | b | 50.26 | 50.19 | 49.10 | 43.87 | 38.33 | 29.16 | 40.04 | ||||||||||||
1945 | 34.35 | 33.79 | 34.03 | 36.80 | 45.16 | 45.40 | 50.37 | a | 49.52 | 45.70 | 41.00 | 36.73 | 33.60 | a | 40.54 | |||||||||||
1946 | 34.26 | 34.21 | 36.06 | 38.90 | a | 44.03 | a | 47.37 | 51.47 | a | 50.55 | 46.50 | 39.61 | 32.60 | 32.30 | a | 40.66 | |||||||||
1947 | 28.71 | 32.70 | a | 36.20 | a | 39.59 | a | 44.84 | 48.27 | 49.60 | a | 48.68 | 47.57 | 44.61 | 37.97 | a | 34.87 | a | 41.13 | |||||||
1948 | 31.50 | a | 30.89 | b | 33.16 | 36.39 | b | 44.07 | b | 50.30 | 49.87 | 51.03 | 45.43 | 39.10 | b | 35.47 | 29.68 | 39.74 | ||||||||
1949 | 21.58 | 29.46 | 33.81 | 37.77 | 43.94 | 43.40 | 47.87 | 50.03 | 45.87 | 37.33 | a | 41.90 | 33.00 | 38.83 | ||||||||||||
1950 | 20.87 | 31.93 | 33.84 | 34.60 | 39.45 | 48.07 | 51.19 | 50.35 | 46.60 | 41.87 | 36.73 | 38.12 | g | 39.59 | a | |||||||||||
1951 | 32.29 | 32.96 | 31.77 | 36.17 | 41.16 | 47.33 | 49.90 | 47.58 | 46.10 | 43.42 | 37.83 | 32.94 | 39.96 | |||||||||||||
1952 | 31.77 | a | 35.64 | a | 36.23 | 38.37 | 42.23 | 46.47 | 50.35 | 51.26 | 48.13 | 43.16 | 34.03 | 34.23 | 40.99 | |||||||||||
1953 | 39.13 | 34.82 | 36.30 | a | 38.80 | 43.77 | 46.63 | 49.97 | 52.03 | 48.27 | 43.74 | 40.73 | ----- | z | 43.11 | a | ||||||||||
1954 | 31.13 | 35.07 | 31.45 | 37.47 | 43.10 | 46.00 | a | 49.35 | 51.45 | 50.07 | 40.16 | 41.23 | 33.74 | 40.85 | ||||||||||||
1955 | 34.43 | a | 31.93 | 34.00 | a | 37.45 | a | 44.33 | a | 50.38 | a | 52.34 | b | 51.40 | a | 48.52 | a | 43.33 | a | 32.57 | 33.19 | 41.16 | ||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 32.40 | 33.46 | 35.46 | 38.33 | 42.91 | 47.17 | 49.71 | 50.06 | 46.56 | 42.55 | 38.10 | 34.98 | 40.99 | |||||||||||||
S.D. | 4.03 | 3.35 | 2.46 | 2.10 | 1.90 | 1.72 | 1.66 | 2.25 | 1.85 | 2.38 | 3.07 | 3.04 | 1.19 | |||||||||||||
SKEW | -1.15 | -0.42 | 0.29 | -0.28 | -0.73 | -0.01 | -0.57 | 0.96 | -0.03 | -0.18 | -0.08 | -0.50 | -0.31 | |||||||||||||
MAX | 39.13 | 39.89 | 41.48 | 42.60 | 45.65 | 50.70 | 54.10 | 59.84 | 51.34 | 48.81 | 45.60 | 40.77 | 43.12 | |||||||||||||
MIN | 20.21 | 24.00 | 30.97 | 32.17 | 37.45 | 43.27 | 44.19 | 45.00 | 42.20 | 36.67 | 31.65 | 27.23 | 38.10 | |||||||||||||
YRS | 72 | 72 | 74 | 74 | 73 | 74 | 74 | 72 | 74 | 73 | 74 | 72 | 60 |