YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1893 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | 29.56 | v | 34.37 | 37.16 | 45.10 | 58.48 | 61.52 | 51.40 | 34.52 | 27.40 | 20.06 | 41.11 | c | |||||||||
1910 | 23.13 | 22.75 | 32.00 | 36.07 | 41.77 | 47.37 | 57.97 | 60.23 | 51.50 | 37.84 | 31.13 | 26.74 | 39.04 | |||||||||||||
1911 | 28.90 | 28.36 | 34.06 | 34.20 | 36.03 | 45.67 | 57.65 | 59.06 | 52.27 | 39.26 | 25.77 | 14.10 | 37.94 | |||||||||||||
1912 | 19.73 | a | 19.69 | 30.90 | a | 31.93 | a | 37.00 | 48.75 | f | 55.39 | c | ----- | z | 42.37 | 35.55 | 24.93 | 21.35 | 31.89 | b | ||||||
1913 | 16.06 | 25.21 | 24.32 | 32.10 | 37.00 | 45.20 | 55.48 | 58.42 | 47.90 | 33.13 | 34.31 | a | 24.10 | 36.10 | ||||||||||||
1914 | 25.87 | 26.00 | b | 31.29 | 36.27 | 37.42 | e | 49.66 | a | 60.94 | 57.19 | 49.67 | 40.39 | 32.53 | 25.77 | 39.42 | ||||||||||
1915 | 23.03 | a | 27.68 | 30.03 | 36.00 | 38.77 | 44.90 | 55.13 | 54.77 | 44.30 | 34.10 | 26.43 | 23.81 | 36.58 | ||||||||||||
1916 | 22.94 | 28.29 | a | 31.14 | b | 30.70 | 35.76 | b | 41.13 | 57.13 | 55.39 | 48.07 | 35.84 | 20.23 | 8.65 | 34.60 | ||||||||||
1917 | 17.87 | 22.59 | a | 21.06 | 31.67 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 23.30 | h | |||
1918 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 54.41 | m | 56.65 | h | 51.65 | h | 42.67 | l | 35.21 | q | 24.00 | d | 17.57 | h | 24.00 | k |
1919 | 15.15 | d | 18.80 | c | 27.23 | a | 33.91 | h | 37.12 | n | ----- | z | 58.67 | d | 52.00 | v | 45.00 | y | 37.50 | o | 22.57 | p | 22.34 | b | 28.44 | g |
1920 | 24.48 | d | 32.00 | i | 25.26 | h | 28.89 | k | 37.75 | s | 43.25 | n | 52.56 | f | 57.64 | t | 39.73 | s | 28.38 | r | 22.50 | p | ----- | z | 24.48 | k |
1921 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 60.64 | t | 57.60 | p | 43.71 | p | 39.45 | k | 24.70 | t | 28.72 | m | ----- | z |
1922 | 18.39 | c | 19.76 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 27.62 | r | 21.47 | m | 25.87 | h | 19.08 | j |
1923 | 20.60 | f | 22.00 | 24.82 | c | 31.12 | m | 36.04 | g | 37.31 | n | 56.75 | c | 55.55 | 41.78 | g | 27.38 | r | 29.31 | a | 25.03 | a | 35.58 | f | ||
1924 | 17.48 | j | 21.21 | e | 22.13 | a | 30.41 | a | 35.81 | 44.21 | k | 55.28 | b | ----- | z | ----- | z | 33.13 | p | ----- | z | ----- | z | 32.97 | g | |
1925 | 16.64 | i | 22.78 | e | 23.96 | h | 30.84 | k | 38.48 | b | 48.85 | d | 58.11 | c | 57.64 | t | 54.80 | 38.46 | c | 24.58 | d | 18.96 | h | 40.87 | e | |
1926 | 14.10 | b | 20.19 | a | 27.07 | b | 36.32 | k | 37.88 | g | 44.00 | 53.71 | c | 53.72 | b | 53.26 | k | ----- | z | 25.21 | k | 29.25 | o | 35.47 | f | |
1927 | 25.09 | h | 27.82 | f | 27.20 | p | 31.84 | e | 36.04 | g | 44.85 | c | 56.82 | c | 55.11 | c | 51.80 | o | 31.64 | t | ----- | z | 22.96 | c | 42.32 | g |
1928 | 18.55 | k | 24.75 | i | 27.63 | d | 25.44 | n | 39.91 | i | 42.61 | b | 54.68 | c | 55.11 | c | 46.30 | g | 35.71 | n | 26.40 | j | 20.43 | h | 45.01 | h |
1929 | 16.78 | h | 18.00 | c | 24.88 | f | 28.12 | m | 38.80 | p | 41.70 | g | 59.12 | e | 55.76 | j | 48.52 | i | 32.59 | i | 21.24 | e | 15.63 | d | 28.50 | h |
1930 | 18.95 | j | 24.35 | e | 26.48 | b | 33.26 | g | 34.41 | i | 44.11 | c | 55.30 | h | 52.44 | o | 41.07 | c | 33.47 | l | 24.00 | p | 15.50 | e | 30.30 | g |
1931 | 17.07 | c | 28.76 | c | 23.29 | n | 31.55 | j | 38.25 | s | 42.14 | p | 57.16 | f | 55.57 | q | 45.42 | r | 33.31 | o | 20.67 | l | 16.54 | c | 20.79 | i |
1932 | 16.22 | h | 26.19 | h | 23.75 | w | 29.43 | w | 36.08 | s | 41.17 | g | 53.83 | m | 53.00 | u | 50.05 | k | 36.86 | j | ----- | z | 23.47 | l | ----- | z |
1933 | 17.67 | j | 15.55 | f | 24.36 | q | 27.43 | p | 33.76 | j | 43.91 | h | 57.78 | m | 52.18 | t | 57.62 | v | 38.20 | u | ----- | z | 20.80 | k | ----- | z |
1934 | 17.65 | h | 23.17 | d | 28.63 | l | 33.95 | i | 40.58 | s | 41.19 | n | 57.42 | e | 55.75 | w | 43.60 | t | 33.09 | h | 24.70 | j | 24.00 | q | 40.29 | j |
1935 | 22.00 | w | 25.68 | c | 25.92 | e | 29.95 | i | 33.47 | n | 42.79 | b | 54.08 | g | 57.11 | v | 44.78 | u | 33.35 | n | 22.69 | n | 20.86 | j | 31.46 | i |
1936 | ----- | z | 23.19 | h | 23.80 | k | 28.38 | n | 34.20 | f | 45.65 | d | 55.06 | 54.96 | d | 42.79 | f | 33.50 | c | 24.79 | b | 18.81 | d | 38.80 | f | |
1937 | 3.90 | a | 19.81 | b | 25.44 | d | 27.90 | i | 35.26 | 41.70 | 54.97 | 54.74 | 48.30 | 33.42 | 21.10 | a | 21.00 | u | 33.86 | b | ||||||
1938 | 18.54 | e | 24.25 | 27.00 | e | 29.27 | 34.61 | 42.50 | 51.65 | 52.61 | 46.31 | a | 30.48 | 14.77 | 20.87 | 32.74 | ||||||||||
1939 | 19.77 | a | 13.00 | 26.77 | 34.23 | d | 36.65 | 42.67 | r | 57.50 | s | 57.30 | d | 52.48 | c | 32.77 | a | 29.32 | b | 23.14 | c | 32.54 | b | |||
1940 | 24.71 | 24.96 | c | 26.86 | c | 30.93 | p | 40.48 | d | 48.93 | a | 55.10 | 55.55 | 49.14 | b | 36.13 | 24.88 | d | 28.85 | r | 38.67 | b | ||||
1941 | 25.30 | k | 30.33 | d | 29.61 | c | 31.45 | a | 40.10 | a | 42.93 | 52.39 | 52.76 | b | 44.74 | c | 34.57 | c | 25.42 | f | 21.82 | i | 39.88 | c | ||
1942 | 20.00 | c | 19.24 | k | 23.23 | e | 29.10 | a | 31.00 | a | 39.53 | 55.65 | 54.71 | c | 46.81 | c | 36.14 | b | 27.73 | d | 23.87 | a | 35.25 | a | ||
1943 | 23.10 | 27.73 | q | 29.10 | a | 32.17 | a | 38.13 | a | 46.38 | a | 55.56 | d | 58.85 | e | 47.46 | f | 36.55 | b | 24.15 | c | ----- | z | 38.22 | c | |
1944 | 19.19 | 23.45 | 24.77 | 29.63 | 35.35 | 40.17 | 51.16 | 53.55 | 48.33 | 38.65 | 27.27 | 21.68 | 34.43 | |||||||||||||
1945 | 19.03 | a | 24.39 | 25.03 | 27.50 | b | 33.27 | a | 37.43 | 56.42 | 56.97 | a | 44.61 | b | 38.74 | 20.60 | 15.54 | c | 33.29 | |||||||
1946 | 21.00 | 16.07 | 24.97 | b | 35.34 | a | 35.19 | 43.27 | 56.74 | 57.68 | 49.17 | 34.03 | 25.20 | 24.16 | 35.24 | |||||||||||
1947 | 18.94 | 22.75 | 25.26 | 29.53 | 39.68 | 43.00 | 53.87 | 55.87 | 47.10 | 35.81 | 23.47 | 19.55 | 34.57 | |||||||||||||
1948 | 18.10 | 21.41 | 23.90 | 28.67 | 32.52 | 41.10 | a | 53.28 | b | 55.94 | 47.03 | 36.62 | e | 21.41 | c | 19.48 | f | 34.54 | a | |||||||
1949 | 13.13 | a | 10.04 | e | 25.26 | 34.00 | b | 36.09 | h | 46.75 | f | 57.00 | q | 48.13 | p | 50.93 | p | 31.24 | n | 25.78 | l | 17.56 | f | 20.61 | h | |
1950 | 16.65 | e | 24.30 | h | 24.83 | h | 30.88 | d | 33.48 | j | 40.19 | d | 56.39 | c | 48.59 | d | 42.71 | i | 35.76 | n | 23.76 | i | 18.41 | i | 38.54 | g |
1951 | 16.56 | f | 22.00 | e | 22.23 | i | 31.83 | g | 36.16 | l | 37.33 | c | 55.23 | a | 53.65 | e | 40.85 | j | 34.94 | o | 26.14 | p | 20.96 | h | 42.06 | h |
1952 | 21.55 | b | 19.75 | a | 22.18 | c | 33.52 | c | 37.64 | c | 42.93 | b | 53.03 | a | 55.82 | c | 47.29 | f | 33.14 | i | 21.00 | k | 18.81 | e | 33.91 | c |
1953 | 20.37 | d | 15.05 | g | 24.65 | h | 29.06 | l | 29.95 | i | 39.18 | h | 57.11 | d | 49.52 | h | 39.12 | m | 30.00 | g | 23.58 | k | 11.88 | g | 38.74 | j |
1954 | 14.71 | q | 21.36 | 26.77 | e | 31.84 | e | 36.93 | c | 43.31 | d | 56.61 | c | 52.93 | c | 47.31 | d | 35.32 | c | 23.27 | d | 16.48 | b | 35.65 | a | |
1955 | 16.33 | g | 16.29 | 20.48 | b | 24.24 | a | 34.43 | a | 42.04 | b | 52.84 | 56.17 | a | 41.17 | a | 35.24 | f | 24.52 | a | 22.21 | c | 33.44 | b | ||
1956 | 20.86 | c | 18.79 | 21.00 | a | 30.38 | a | 36.66 | b | 48.07 | 55.53 | a | 49.74 | 46.17 | a | 33.94 | 18.07 | 16.15 | d | 32.95 | ||||||
1957 | 26.13 | a | 31.07 | a | 30.68 | 30.97 | 35.93 | b | 46.57 | 56.94 | 55.97 | 42.03 | 39.94 | 25.85 | c | 21.41 | b | 36.96 | ||||||||
1958 | 17.32 | c | 25.43 | 26.40 | a | 29.83 | 39.53 | a | 46.97 | 51.41 | b | 56.97 | a | 51.07 | 39.10 | 24.50 | b | 20.00 | c | 35.71 | ||||||
1959 | 19.03 | b | 19.58 | b | 21.94 | 31.50 | b | 33.35 | 48.47 | 57.93 | a | 56.35 | 44.87 | 35.10 | 27.25 | f | 25.10 | a | 35.75 | a | ||||||
1960 | 16.82 | c | 19.92 | d | 29.03 | 31.55 | a | 36.71 | 48.47 | 55.35 | 55.58 | 48.70 | 37.90 | a | 26.47 | 18.97 | 35.46 | |||||||||
1961 | 20.26 | 21.82 | 26.33 | a | 30.87 | 35.10 | 47.28 | a | 56.50 | a | 57.43 | c | 45.24 | a | 33.35 | 26.89 | b | 22.42 | 35.29 | |||||||
1962 | 20.58 | 25.50 | b | 22.16 | 33.18 | b | 34.74 | 42.45 | a | 54.33 | a | 53.39 | 50.80 | 36.34 | b | 28.67 | c | 23.52 | d | 35.47 | ||||||
1963 | 17.61 | 24.57 | 23.83 | b | 26.45 | a | 37.35 | 40.83 | ----- | z | 58.83 | a | 50.23 | 39.20 | a | 30.28 | e | 17.97 | a | 33.38 | a | |||||
1964 | 14.90 | b | 15.38 | c | 22.33 | d | 30.11 | c | 34.87 | a | 41.93 | a | 58.35 | 56.11 | c | 49.30 | 37.48 | b | 21.41 | a | 21.94 | 33.68 | ||||
1965 | 23.83 | a | 20.41 | a | 25.29 | 31.69 | a | 35.06 | 41.47 | 56.48 | d | 52.24 | b | 44.63 | 33.59 | b | 29.36 | b | 22.25 | c | 34.69 | |||||
1966 | 18.14 | c | 18.07 | a | 24.42 | 29.77 | d | 38.03 | b | 43.13 | 57.16 | 54.97 | b | 52.27 | 34.35 | 24.29 | i | 18.03 | 35.30 | a | ||||||
1967 | 18.10 | b | 16.54 | b | 22.29 | g | 24.56 | c | 32.93 | b | 44.10 | 58.29 | 55.41 | b | 48.37 | 34.57 | a | 28.77 | ----- | z | 36.16 | b | ||||
1968 | 20.23 | 29.82 | a | 27.42 | 30.55 | a | 36.62 | b | 42.23 | 53.68 | 50.90 | 41.77 | 34.68 | 27.70 | 16.43 | a | 34.34 | |||||||||
1969 | 28.52 | b | 23.00 | 22.39 | 30.77 | 36.13 | 42.70 | 56.76 | b | 58.31 | b | 48.83 | 34.13 | 28.13 | 23.33 | a | 36.08 | |||||||||
1970 | 17.97 | a | 25.57 | 26.32 | 26.90 | 35.45 | 45.10 | 57.52 | 57.55 | 44.50 | 30.30 | a | 23.90 | 21.48 | d | 34.38 | ||||||||||
1971 | 16.53 | a | 20.92 | c | 22.94 | 25.70 | c | 32.16 | 41.70 | 56.48 | 57.52 | 45.03 | 34.03 | 23.77 | 19.31 | b | 33.01 | |||||||||
1972 | 15.77 | 17.14 | 25.31 | b | 27.28 | e | 33.76 | f | 45.77 | d | 55.76 | b | 54.89 | c | 46.83 | 42.22 | d | 25.90 | a | 22.81 | 34.52 | a | ||||
1973 | 21.43 | a | 27.64 | 27.10 | b | 30.30 | c | 40.26 | 45.60 | 54.94 | 54.19 | 42.59 | a | 32.71 | 25.34 | a | 20.10 | 35.18 | ||||||||
1974 | 22.50 | c | 19.00 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 20.75 | j |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 19.60 | 22.18 | 25.99 | 30.89 | 36.37 | 43.91 | 55.87 | 55.55 | 47.29 | 35.73 | 25.46 | 20.45 | 35.30 | |||||||||||||
S.D. | 4.25 | 4.40 | 3.15 | 2.88 | 2.37 | 2.92 | 2.05 | 2.53 | 3.41 | 2.65 | 3.79 | 3.69 | 1.77 | |||||||||||||
SKEW | -0.62 | -0.20 | 0.42 | -0.25 | 0.06 | -0.01 | -0.29 | -0.34 | -0.02 | 0.30 | -0.26 | -0.82 | 0.74 | |||||||||||||
MAX | 28.90 | 31.07 | 34.06 | 36.27 | 41.77 | 49.66 | 60.94 | 61.52 | 54.80 | 42.22 | 34.31 | 26.74 | 39.42 | |||||||||||||
MIN | 3.90 | 10.04 | 20.48 | 24.24 | 31.00 | 37.33 | 51.16 | 48.59 | 41.07 | 30.30 | 14.77 | 8.65 | 32.74 | |||||||||||||
YRS | 47 | 53 | 48 | 44 | 42 | 48 | 52 | 47 | 41 | 41 | 42 | 42 | 24 |