YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1893 | ----- | z | 7.64 | 17.19 | 25.00 | 33.13 | 42.13 | 49.00 | 47.35 | ----- | z | ----- | z | ----- | z | ----- | z | 31.64 | e | |||||||
1894 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1895 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1896 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1897 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1898 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1899 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1900 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1901 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1902 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1903 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1904 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1905 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1906 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1907 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1908 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1909 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1910 | ----- | z | ----- | z | ----- | z | 47.20 | y | 39.45 | 48.37 | 55.32 | 51.70 | a | 45.77 | 35.10 | 26.80 | 19.48 | 40.25 | d | |||||||
1911 | 14.74 | 15.00 | 25.13 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 11.80 | a | 16.67 | h | |||
1912 | 12.77 | e | 14.30 | b | 12.47 | a | 30.00 | a | 37.58 | 45.37 | 52.35 | 51.33 | a | 38.54 | b | 31.00 | c | 23.52 | a | 12.40 | a | 30.14 | ||||
1913 | 6.14 | b | 2.61 | 18.29 | 28.77 | 39.39 | 46.33 | 50.30 | a | 51.79 | c | 39.40 | 26.19 | 21.43 | b | 7.87 | 28.21 | |||||||||
1914 | 16.71 | 10.39 | 20.04 | c | 28.93 | a | 37.97 | a | 47.52 | a | 52.41 | b | 50.80 | a | 41.14 | a | 31.97 | 21.17 | a | 3.48 | 30.21 | |||||
1915 | 7.45 | b | 17.00 | a | 17.33 | a | 33.45 | a | 35.30 | a | 44.25 | b | 49.34 | b | 47.52 | 42.03 | 31.32 | c | 21.37 | c | 12.74 | d | 29.93 | |||
1916 | 3.20 | a | 15.88 | d | 23.23 | 26.12 | d | 34.63 | a | 43.33 | 51.04 | c | 49.66 | b | 38.00 | c | 27.55 | 15.63 | 4.97 | a | 27.77 | |||||
1917 | 6.55 | 14.07 | 14.14 | b | 26.90 | a | 33.08 | f | 42.39 | b | 50.59 | b | 45.58 | e | 40.74 | c | 26.13 | 25.50 | b | 14.24 | b | 27.89 | a | |||
1918 | 2.93 | c | 11.30 | a | 23.31 | b | 24.00 | a | 35.00 | d | 49.55 | a | 48.94 | 50.00 | a | 38.78 | c | 33.97 | b | 16.12 | f | 13.70 | a | 30.13 | a | |
1919 | 12.38 | e | 10.07 | a | 20.10 | a | 30.83 | a | 35.24 | b | 43.83 | a | 53.77 | 49.90 | a | 44.80 | 25.62 | b | ----- | z | 7.14 | b | 30.34 | a | ||
1920 | 16.39 | c | 15.00 | c | 16.20 | a | 20.28 | e | 37.00 | 45.20 | 51.19 | 48.03 | 42.71 | b | 28.29 | 17.83 | 14.77 | 29.41 | ||||||||
1921 | 12.57 | h | 17.48 | a | 23.00 | c | 25.61 | b | 40.41 | d | 49.63 | c | 51.29 | c | 50.05 | j | 43.42 | k | 29.60 | u | 19.96 | e | 13.41 | n | 32.48 | e |
1922 | -0.19 | j | 4.19 | g | 20.82 | t | 27.10 | j | 38.37 | a | 46.73 | d | 50.92 | g | 53.71 | g | 42.27 | d | 31.04 | c | 20.61 | g | 16.52 | j | 39.60 | h |
1923 | 18.30 | a | 8.64 | 17.67 | a | 26.85 | d | 39.36 | f | 47.73 | d | 53.67 | d | 51.55 | b | 40.86 | a | 31.33 | a | 22.44 | c | 10.29 | c | 29.94 | a | |
1924 | 6.35 | 18.56 | b | 13.96 | c | 27.89 | b | 31.05 | k | 44.04 | f | 50.14 | b | 48.46 | c | 40.30 | c | 33.33 | a | 21.36 | b | 5.55 | 26.59 | b | ||
1925 | 9.75 | c | 18.46 | 21.04 | c | 31.48 | a | 40.41 | b | 48.31 | a | 54.38 | b | 48.81 | d | 44.66 | a | 27.64 | c | 21.18 | b | 13.89 | d | 31.67 | ||
1926 | 13.13 | 23.20 | c | 18.89 | c | 29.25 | b | 39.66 | b | 47.52 | c | 52.23 | a | 48.13 | a | 39.37 | c | 30.68 | ----- | z | 10.70 | a | 32.07 | a | ||
1927 | 15.52 | 18.63 | a | 20.80 | a | 29.57 | 39.39 | 47.66 | a | 51.84 | 50.58 | 44.67 | 36.27 | a | 27.52 | a | 7.87 | a | 32.52 | |||||||
1928 | 17.77 | 15.69 | 23.06 | 26.17 | 41.57 | a | 43.77 | 53.58 | 53.35 | 50.63 | ----- | z | 25.38 | a | 14.42 | 33.22 | a | |||||||||
1929 | 9.72 | b | 5.75 | 24.83 | a | 31.07 | 38.32 | 46.90 | ----- | z | 55.39 | 42.00 | a | 34.71 | 14.80 | 19.86 | b | 29.40 | a | |||||||
1930 | -0.10 | 24.29 | 19.55 | 37.60 | 38.00 | 47.63 | 56.45 | 55.10 | 44.07 | 33.32 | 27.68 | k | 14.58 | l | 35.59 | b | ||||||||||
1931 | 18.45 | 20.79 | 20.55 | 30.67 | 38.00 | 52.73 | 55.48 | 53.45 | 49.23 | 36.00 | 19.43 | 17.87 | 34.39 | |||||||||||||
1932 | 10.94 | 20.04 | a | 14.52 | 31.53 | 41.87 | 48.23 | 56.68 | 54.16 | 44.13 | 30.23 | a | 26.20 | 6.77 | 32.11 | |||||||||||
1933 | 15.71 | 7.33 | a | 23.23 | 27.40 | 38.06 | 52.33 | 57.06 | 52.74 | 47.80 | 34.71 | 25.86 | a | 22.29 | 33.71 | |||||||||||
1934 | 20.71 | 19.29 | 24.71 | 32.07 | 45.16 | 49.57 | 57.23 | 55.06 | ----- | z | 37.58 | 27.69 | a | 17.45 | 35.14 | a | ||||||||||
1935 | 16.65 | 18.29 | 22.21 | l | 28.03 | 36.84 | 47.43 | 56.71 | 55.29 | 45.10 | 32.55 | 21.93 | 17.71 | 34.23 | a | |||||||||||
1936 | 14.03 | 2.45 | 23.16 | 31.13 | ----- | z | 52.90 | 57.96 | h | 55.81 | 45.53 | 33.45 | 22.86 | a | 17.74 | 29.91 | b | |||||||||
1937 | -1.19 | ----- | z | 19.35 | n | 29.40 | 40.52 | 47.93 | 55.13 | 56.48 | 48.68 | b | ----- | z | 18.55 | s | 14.74 | 36.46 | d | |||||||
1938 | 17.43 | a | 17.68 | 27.27 | a | 31.00 | 39.71 | 49.10 | 55.00 | 56.71 | 48.07 | a | 37.40 | a | 20.83 | 15.35 | 34.63 | |||||||||
1939 | 20.26 | 7.77 | b | 23.90 | 32.13 | 42.06 | 46.93 | 56.90 | 51.84 | 48.07 | 35.73 | a | 25.37 | 22.90 | 34.49 | |||||||||||
1940 | 8.90 | 20.10 | 27.43 | a | 30.90 | 41.32 | 51.17 | 57.03 | 53.35 | 51.17 | 39.96 | f | 20.93 | p | 19.77 | 36.12 | b | |||||||||
1941 | 18.23 | a | 19.93 | 22.35 | 31.90 | 43.48 | 47.83 | 54.84 | 54.13 | 42.03 | 34.10 | 24.97 | a | 18.10 | 34.32 | |||||||||||
1942 | 11.97 | 10.00 | 22.07 | a | 34.70 | 37.13 | 49.33 | 54.74 | 53.32 | 43.87 | 36.60 | a | 23.77 | 19.93 | c | 33.12 | ||||||||||
1943 | 16.29 | 23.96 | a | 19.72 | b | 37.86 | a | 38.81 | 49.17 | 55.65 | 57.10 | 43.23 | 34.57 | a | 25.50 | 19.00 | 35.07 | |||||||||
1944 | 12.03 | 18.34 | 19.61 | 28.27 | 38.97 | a | 47.33 | 52.03 | 53.00 | 42.77 | 34.74 | 24.37 | 13.97 | a | 32.12 | |||||||||||
1945 | 16.90 | 17.86 | 22.43 | a | 24.60 | 36.65 | 43.27 | 51.52 | 52.61 | 39.87 | 33.68 | 23.60 | 14.19 | 31.43 | ||||||||||||
1946 | 14.03 | 15.11 | 23.74 | 34.20 | 36.97 | a | 48.90 | 55.10 | 53.06 | 43.17 | 32.48 | 21.31 | a | 20.76 | b | 33.24 | ||||||||||
1947 | 14.83 | a | 12.08 | c | 19.97 | 30.33 | 38.45 | 45.27 | 53.19 | 55.03 | a | 46.57 | 37.39 | 17.97 | a | 17.90 | 32.42 | |||||||||
1948 | 15.28 | b | 11.10 | 16.45 | 30.97 | 39.00 | 48.40 | 51.71 | 50.65 | 46.37 | 33.16 | 24.50 | 20.42 | 32.33 | ||||||||||||
1949 | -6.38 | w | 12.50 | 24.33 | a | 33.62 | a | 43.19 | 50.43 | 54.90 | 53.18 | i | 42.65 | g | 32.71 | 31.80 | 13.94 | 33.05 | c | |||||||
1950 | 7.90 | 20.43 | 20.84 | 28.70 | 36.00 | 48.30 | 51.39 | 48.42 | 43.83 | 36.81 | 21.87 | 20.22 | d | 32.06 | ||||||||||||
1951 | 9.65 | 14.59 | a | 15.42 | 25.80 | 38.71 | 41.80 | 52.29 | 49.60 | a | 39.30 | 30.90 | 18.30 | 10.90 | 28.94 | |||||||||||
1952 | 12.48 | 15.07 | 15.42 | 27.50 | 38.23 | 50.20 | 51.00 | 51.74 | 44.30 | 32.55 | 15.80 | 15.72 | b | 30.83 | ||||||||||||
1953 | 20.94 | 12.93 | 22.23 | 25.30 | 36.23 | 48.33 | 53.58 | 51.16 | 44.00 | 35.32 | 25.78 | c | 15.90 | j | 34.16 | a | ||||||||||
1954 | 11.21 | g | 22.25 | 17.00 | c | 31.43 | 37.16 | 47.63 | 56.58 | 51.90 | 46.63 | 31.97 | 26.11 | b | 18.45 | 35.19 | a | |||||||||
1955 | 10.19 | 9.52 | a | 14.96 | e | 30.77 | 41.48 | 47.10 | 56.62 | b | 55.33 | a | 45.50 | d | 37.81 | 18.43 | i | 18.48 | 33.43 | a | ||||||
1956 | 19.00 | 13.28 | 21.84 | 27.13 | 41.21 | b | 50.07 | 53.04 | c | 49.52 | 45.03 | 36.26 | d | 22.00 | a | 19.92 | f | 34.40 | a | |||||||
1957 | ----- | z | 22.04 | a | 22.07 | a | 28.50 | 38.45 | 50.14 | h | 55.61 | 54.65 | 42.80 | 37.32 | c | 23.24 | a | 22.10 | 34.68 | b | ||||||
1958 | 18.10 | 20.64 | f | 20.04 | h | 31.13 | 45.16 | 50.83 | 52.03 | 56.06 | 45.83 | 37.47 | a | 23.43 | 21.32 | 38.14 | b | |||||||||
1959 | 16.07 | a | 15.68 | 22.26 | 27.60 | 40.97 | 50.77 | 52.48 | 55.19 | 44.07 | 31.87 | 19.00 | 19.84 | 32.98 | ||||||||||||
1960 | 13.45 | 13.24 | 19.87 | a | 32.07 | 39.77 | 48.83 | 55.16 | 53.06 | 47.43 | ----- | z | ----- | z | ----- | z | 35.88 | c | ||||||||
1961 | 16.16 | 18.25 | 21.55 | 26.90 | a | 38.29 | 49.13 | 53.29 | c | 54.87 | a | 39.07 | 33.29 | 22.30 | 14.58 | e | 32.31 | |||||||||
1962 | 5.84 | 16.36 | 19.13 | 33.03 | 42.94 | 47.90 | 53.03 | 52.48 | 44.33 | 40.28 | f | 28.60 | 22.06 | 33.25 | a | |||||||||||
1963 | 4.61 | 25.18 | 23.77 | 32.40 | 43.84 | 52.50 | 58.52 | 57.06 | 51.57 | 43.00 | 27.30 | 15.06 | 36.23 | |||||||||||||
1964 | 19.06 | 14.52 | 17.52 | 31.10 | 43.26 | 49.03 | 59.48 | 54.10 | 45.13 | 36.52 | 25.10 | 17.42 | 34.35 | |||||||||||||
1965 | 21.03 | 15.46 | 12.58 | 35.66 | a | 40.90 | 49.57 | 55.52 | 53.23 | 39.93 | 39.68 | 31.07 | 22.00 | 34.72 | ||||||||||||
1966 | 11.81 | 15.32 | 26.19 | 28.45 | a | 42.26 | 49.37 | 59.68 | 52.55 | 47.63 | 34.87 | 25.43 | 16.90 | 34.21 | ||||||||||||
1967 | 19.39 | 20.43 | 27.55 | 31.34 | a | 39.58 | 48.73 | 54.65 | 51.13 | 44.37 | 35.13 | 23.03 | 10.90 | a | 33.85 | |||||||||||
1968 | 14.68 | 19.66 | 25.19 | 27.37 | 36.74 | 47.77 | 53.71 | 51.52 | 43.93 | 37.90 | 23.00 | 13.61 | 32.92 | |||||||||||||
1969 | 15.52 | 18.54 | 16.90 | 34.70 | 43.00 | 46.33 | 55.32 | 57.45 | 49.00 | 29.19 | 25.37 | 19.65 | 34.25 | |||||||||||||
1970 | 14.90 | 18.71 | ----- | z | ----- | z | 40.73 | e | 48.97 | 54.94 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 35.65 | g | ||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 13.13 | 15.52 | 20.50 | 29.78 | 39.33 | 47.89 | 53.91 | 52.45 | 44.11 | 33.59 | 23.21 | 15.47 | 32.45 | |||||||||||||
S.D. | 5.41 | 5.16 | 3.83 | 3.36 | 2.69 | 2.56 | 2.54 | 2.80 | 3.34 | 3.56 | 3.62 | 4.91 | 2.10 | |||||||||||||
SKEW | -0.75 | -0.50 | -0.23 | -0.01 | 0.13 | -0.46 | 0.09 | -0.25 | 0.18 | -0.21 | -0.15 | -0.60 | -0.54 | |||||||||||||
MAX | 21.03 | 25.18 | 27.55 | 37.86 | 45.16 | 52.90 | 59.68 | 57.45 | 51.57 | 43.00 | 31.80 | 22.90 | 36.23 | |||||||||||||
MIN | -1.19 | 2.45 | 12.47 | 20.28 | 33.13 | 41.80 | 48.94 | 45.58 | 38.00 | 25.62 | 14.80 | 3.48 | 27.77 | |||||||||||||
YRS | 55 | 58 | 56 | 58 | 57 | 59 | 58 | 57 | 56 | 53 | 50 | 54 | 33 |