YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1897 | 16.65 | 16.50 | 21.29 | 32.07 | 42.87 | 48.77 | 53.61 | 55.10 | 49.07 | 36.39 | 27.40 | 13.10 | 34.40 | |||||||||||||
1898 | 11.06 | 22.43 | 20.81 | 37.23 | 39.58 | 50.93 | 58.13 | 56.06 | 47.03 | 34.06 | 25.77 | 10.23 | 34.44 | |||||||||||||
1899 | 10.19 | 18.32 | 26.52 | 33.63 | 38.58 | 50.67 | 55.65 | 54.61 | 49.83 | 35.77 | 25.23 | 23.35 | 35.20 | |||||||||||||
1900 | ----- | z | 22.39 | 27.32 | 28.73 | 41.86 | c | 50.33 | u | 56.44 | d | 52.48 | 46.00 | 36.74 | 26.67 | 16.35 | 35.50 | b | ||||||||
1901 | 17.97 | 22.50 | 23.53 | a | 31.20 | 43.48 | 50.10 | 57.77 | 56.00 | e | 48.73 | 33.07 | c | 28.17 | 16.17 | a | 35.72 | |||||||||
1902 | 19.77 | 22.75 | 22.79 | b | 35.80 | 41.03 | 44.73 | 51.13 | 54.84 | 45.63 | 37.23 | 26.70 | 21.39 | 35.32 | ||||||||||||
1903 | 20.90 | b | 16.88 | b | 17.29 | 24.97 | 32.10 | 49.63 | 54.35 | 55.35 | 45.50 | 35.29 | 27.70 | 14.57 | a | 32.88 | ||||||||||
1904 | 14.55 | 26.71 | a | 30.32 | 33.30 | 40.81 | 48.23 | 55.10 | 53.39 | 48.57 | 32.45 | 23.33 | 17.55 | 35.36 | ||||||||||||
1905 | 18.52 | 23.43 | 31.26 | 33.67 | 40.45 | 52.17 | 51.97 | 54.06 | 45.00 | 35.26 | 28.07 | 12.68 | 35.54 | |||||||||||||
1906 | 16.35 | 25.96 | 29.19 | 33.03 | 40.87 | 50.33 | 52.71 | 52.03 | 44.70 | 34.42 | 27.11 | b | 25.29 | 36.00 | ||||||||||||
1907 | 23.23 | 26.36 | 30.65 | 35.47 | 37.42 | 45.80 | 53.87 | 53.19 | 45.97 | 37.53 | a | 24.20 | 21.65 | 36.28 | ||||||||||||
1908 | 19.58 | 21.59 | 28.81 | 32.04 | b | 36.81 | 48.14 | b | 54.42 | 53.35 | 44.90 | a | 30.29 | 23.83 | 20.90 | 34.55 | ||||||||||
1909 | 25.63 | a | 21.52 | a | 24.94 | 31.53 | 38.59 | b | 49.93 | b | 55.16 | 53.35 | 44.13 | 34.74 | 26.77 | 9.27 | a | 34.63 | ||||||||
1910 | 18.10 | 19.61 | 28.42 | 33.47 | 43.94 | 55.00 | 54.81 | 54.74 | 48.80 | 34.61 | 25.37 | 20.19 | 36.42 | |||||||||||||
1911 | 24.52 | 21.54 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 23.03 | j | ||
1912 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1913 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1914 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1915 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1916 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1917 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1918 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1919 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1920 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1921 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1922 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1923 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1924 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1925 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1926 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1927 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1928 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1929 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1930 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1931 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1932 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1933 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1934 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1935 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1936 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1937 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1938 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1939 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 21.03 | 21.03 | k | |
1940 | 20.13 | a | 22.83 | 28.06 | 34.27 | 43.19 | 50.90 | 55.77 | 52.58 | 47.67 | 35.67 | a | 24.07 | 22.90 | b | 36.50 | ||||||||||
1941 | 20.84 | 25.82 | 26.55 | 29.87 | 40.87 | 44.43 | 50.61 | 51.55 | 43.76 | a | 35.16 | 24.00 | 20.77 | 34.52 | ||||||||||||
1942 | 17.19 | 16.68 | 21.06 | 33.00 | 38.42 | 50.20 | 53.87 | 51.87 | 44.17 | 35.90 | 27.29 | b | 21.45 | 34.26 | ||||||||||||
1943 | 19.45 | 21.21 | 25.48 | 34.80 | 41.06 | 47.70 | 53.40 | a | 55.39 | 46.33 | 35.03 | 23.10 | 17.29 | 35.02 | ||||||||||||
1944 | 13.74 | 20.69 | 22.77 | 30.13 | 38.42 | 46.60 | 54.16 | 52.74 | 45.71 | m | 36.26 | ----- | z | ----- | z | 35.06 | c | |||||||||
1945 | 18.13 | 26.07 | 24.77 | a | 31.62 | a | 43.74 | 47.70 | 54.68 | 56.97 | 49.77 | 39.45 | 25.86 | a | 16.03 | 36.23 | ||||||||||
1946 | 16.65 | 20.44 | a | 28.87 | 39.97 | 42.03 | 53.30 | 56.32 | 55.32 | 49.87 | 36.17 | a | 25.00 | 23.94 | 37.32 | |||||||||||
1947 | 14.48 | 25.11 | 28.13 | 33.90 | a | 45.50 | a | 49.23 | 57.55 | 54.27 | a | 50.57 | 39.39 | 21.34 | a | 17.81 | 36.44 | |||||||||
1948 | 16.61 | 21.24 | 21.60 | a | 37.20 | 44.26 | 50.50 | 57.29 | 55.23 | 50.07 | c | 38.26 | 21.40 | 22.70 | a | 36.36 | ||||||||||
1949 | 14.90 | 15.96 | 26.77 | 35.00 | 41.10 | 50.20 | 56.42 | 54.34 | b | 51.67 | 34.81 | 29.20 | 18.07 | c | 35.70 | |||||||||||
1950 | 20.43 | c | 25.81 | b | 27.90 | a | 36.57 | 39.94 | 49.77 | 56.74 | 52.61 | 47.07 | 44.42 | 28.70 | 21.61 | 37.63 | ||||||||||
1951 | 18.33 | a | 20.64 | 25.35 | 34.63 | 43.13 | 49.93 | c | 58.71 | 55.84 | 47.57 | 36.87 | 24.37 | 17.13 | 36.04 | |||||||||||
1952 | 20.73 | a | 19.59 | 22.19 | 34.45 | a | 43.48 | 52.69 | a | 55.00 | 55.14 | b | 48.50 | 37.68 | 21.76 | a | 16.42 | 35.64 | ||||||||
1953 | 23.16 | 17.75 | 27.61 | 32.47 | 37.00 | a | 52.80 | 57.81 | 53.52 | b | 47.67 | 37.10 | a | 27.60 | 12.90 | a | 35.62 | |||||||||
1954 | 19.97 | 24.56 | a | 23.87 | 38.00 | 44.55 | 51.03 | 56.39 | 54.90 | 50.13 | 39.90 | 27.14 | a | 15.71 | 37.18 | |||||||||||
1955 | 12.84 | 12.89 | a | 25.74 | 30.90 | a | 40.26 | 48.43 | 54.94 | 54.90 | 49.00 | c | 39.23 | a | 25.48 | a | 24.13 | a | 34.90 | |||||||
1956 | 24.47 | a | 16.18 | a | 26.84 | 33.04 | b | 43.81 | 55.15 | d | 55.10 | a | 53.47 | a | 49.73 | 39.13 | 19.67 | 14.45 | 35.92 | |||||||
1957 | 23.07 | a | 28.54 | 28.03 | 32.93 | 39.26 | 51.87 | 55.19 | 54.06 | 46.63 | 38.19 | 24.41 | a | 22.10 | b | 37.02 | ||||||||||
1958 | 17.39 | 25.43 | 24.45 | 33.57 | 44.00 | 54.24 | a | 57.90 | a | 56.35 | 48.93 | 37.45 | 26.23 | 23.03 | 37.42 | |||||||||||
1959 | 18.19 | 20.50 | 24.45 | 35.93 | 42.84 | 53.07 | b | 57.74 | 55.13 | a | 48.63 | 36.58 | 25.20 | 22.00 | 36.69 | |||||||||||
1960 | 12.77 | 17.79 | 29.77 | 35.07 | 41.19 | 52.63 | 57.60 | a | 56.23 | 49.73 | 36.26 | 28.07 | 18.37 | a | 36.29 | |||||||||||
1961 | 16.10 | 23.04 | 28.29 | 34.03 | 41.77 | a | 54.03 | 57.10 | a | 57.55 | 46.67 | 36.06 | 26.20 | 13.83 | a | 36.22 | ||||||||||
1962 | 14.84 | 25.18 | 21.74 | 37.23 | 40.58 | 50.10 | 57.35 | 55.65 | 50.33 | 38.87 | 30.53 | 20.03 | 36.87 | |||||||||||||
1963 | 10.37 | a | 23.33 | a | 26.03 | 34.18 | b | 47.10 | 52.57 | 60.77 | 54.13 | 50.50 | 45.26 | 29.76 | a | 15.42 | 37.45 | |||||||||
1964 | 13.55 | 10.31 | 22.58 | 30.83 | a | 42.65 | 51.47 | 55.77 | 57.50 | c | 49.53 | 40.97 | a | 26.34 | a | 21.87 | 35.28 | |||||||||
1965 | 22.16 | 20.39 | 26.20 | a | 33.20 | 42.33 | a | 51.40 | 56.10 | ----- | z | 45.97 | 38.70 | a | 31.07 | a | 21.23 | 35.34 | a | |||||||
1966 | 15.55 | 16.43 | 25.32 | 35.79 | a | 46.81 | 54.97 | 56.86 | i | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 32.48 | f | |||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 17.88 | 21.26 | 25.70 | 33.63 | 41.41 | 50.53 | 55.64 | 54.51 | 47.80 | 36.92 | 25.90 | 18.62 | 35.82 | |||||||||||||
S.D. | 3.90 | 3.97 | 3.13 | 2.72 | 2.89 | 2.65 | 2.10 | 1.52 | 2.13 | 2.83 | 2.54 | 4.04 | 1.06 | |||||||||||||
SKEW | -0.03 | -0.53 | -0.42 | -0.50 | -0.64 | -0.31 | -0.23 | -0.01 | -0.27 | 0.73 | -0.27 | -0.44 | -0.40 | |||||||||||||
MAX | 25.63 | 28.54 | 31.26 | 39.97 | 47.10 | 55.15 | 60.77 | 57.55 | 51.67 | 45.26 | 31.07 | 25.29 | 37.63 | |||||||||||||
MIN | 10.19 | 10.31 | 17.29 | 24.97 | 32.10 | 44.43 | 50.61 | 51.55 | 43.76 | 30.29 | 19.67 | 9.27 | 32.88 | |||||||||||||
YRS | 41 | 42 | 41 | 41 | 41 | 40 | 40 | 39 | 39 | 40 | 39 | 40 | 37 |