YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1900 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 51.63 | 44.55 | 23.30 | 17.70 | a | 34.30 | h | |||
1901 | 14.84 | 14.37 | a | 24.68 | 34.53 | 44.68 | 55.53 | 62.71 | 60.35 | 48.63 | 39.65 | 27.33 | 16.81 | 37.01 | ||||||||||||
1902 | 14.94 | 19.14 | 24.65 | 35.24 | a | 47.35 | 54.83 | 58.70 | a | 61.39 | 46.17 | 38.23 | 28.13 | 18.13 | 37.24 | |||||||||||
1903 | 19.68 | 11.93 | 23.10 | 33.27 | 40.23 | 54.53 | 64.77 | 61.87 | 51.30 | 39.93 | a | 26.03 | 18.97 | 37.13 | ||||||||||||
1904 | 14.52 | 17.97 | 26.10 | 31.83 | 45.77 | 53.93 | a | 60.87 | 59.74 | 50.50 | 41.63 | a | 24.43 | 18.48 | b | 37.15 | ||||||||||
1905 | 15.20 | a | 11.04 | a | 34.79 | b | 33.73 | 44.87 | a | 61.00 | 59.42 | 58.83 | b | 52.29 | b | 32.27 | a | 27.60 | ----- | z | 39.18 | a | ||||
1906 | 16.06 | 17.89 | 19.50 | a | 34.47 | 43.77 | 54.12 | d | 54.16 | 54.39 | 47.93 | 34.24 | n | 21.83 | 27.39 | c | 35.59 | a | ||||||||
1907 | 19.00 | 19.12 | d | 28.54 | c | 32.57 | b | 40.29 | 51.90 | a | 60.46 | c | 59.43 | a | 53.79 | b | 37.77 | i | 25.54 | b | 18.36 | i | 39.06 | b | ||
1908 | 19.00 | l | 19.96 | a | 27.16 | 34.87 | 40.16 | 52.93 | 58.26 | 60.52 | 52.23 | 42.00 | 28.43 | 21.94 | 39.86 | a | ||||||||||
1909 | 18.10 | a | 16.75 | 24.89 | c | 32.80 | 42.58 | 55.93 | 62.61 | 63.07 | c | 51.13 | 38.23 | 31.50 | 12.20 | a | 37.48 | |||||||||
1910 | 18.74 | 15.21 | 32.52 | 34.53 | 42.52 | 54.90 | a | 62.52 | 60.74 | 50.27 | 38.29 | 28.03 | a | 18.58 | 38.07 | |||||||||||
1911 | 20.03 | b | 16.64 | c | 29.07 | d | 36.30 | 47.61 | 56.97 | 61.87 | 58.48 | f | 55.58 | d | 39.45 | 23.23 | 13.94 | 36.43 | a | |||||||
1912 | 9.23 | 22.93 | 20.89 | c | 41.17 | 55.77 | e | 53.48 | c | 61.16 | 59.10 | ----- | z | 41.80 | a | 28.30 | 17.29 | 37.37 | a | |||||||
1913 | 14.39 | c | 12.50 | 26.82 | c | 37.13 | 51.60 | a | 55.40 | 62.48 | 60.94 | 46.10 | 35.90 | 30.90 | 16.39 | 37.55 | ||||||||||
1914 | 25.07 | a | 18.89 | 26.00 | 36.24 | a | 46.94 | 56.48 | a | 61.12 | n | 57.32 | 52.87 | 36.68 | 27.00 | 12.90 | a | 36.04 | a | |||||||
1915 | 14.39 | 22.50 | 22.26 | 40.72 | a | 40.66 | b | 52.03 | 56.74 | 53.10 | a | 49.13 | 35.32 | 24.47 | 18.52 | 35.82 | ||||||||||
1916 | 8.77 | 18.62 | 28.58 | 34.10 | 43.00 | 52.53 | 60.42 | 60.40 | a | 46.80 | 37.19 | 20.63 | 10.58 | 35.14 | ||||||||||||
1917 | 16.22 | d | 28.31 | b | 24.20 | a | 31.39 | b | 40.81 | d | 58.56 | c | 63.13 | a | 56.39 | 51.43 | 30.74 | 26.24 | a | 15.74 | 36.93 | |||||
1918 | 10.18 | c | 17.74 | a | 30.45 | b | 32.78 | c | 47.19 | e | 66.14 | a | 64.32 | 62.83 | a | 52.57 | b | 42.23 | 24.72 | a | 19.93 | a | 39.26 | |||
1919 | 12.20 | a | 17.57 | 35.81 | 40.03 | a | 46.17 | a | 54.17 | a | 61.61 | 56.71 | 52.73 | 34.97 | a | 20.20 | 11.90 | 37.01 | ||||||||
1920 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1921 | ----- | z | ----- | z | 30.35 | 35.23 | 47.48 | 58.83 | 62.06 | 61.03 | 52.63 | 42.37 | a | 26.80 | 20.42 | 43.72 | b | |||||||||
1922 | 11.23 | 15.68 | 25.77 | 35.47 | 45.00 | 55.63 | 58.65 | 59.68 | 53.03 | 34.45 | 20.30 | 12.43 | a | 35.61 | ||||||||||||
1923 | 17.83 | a | 12.46 | 21.31 | b | 35.45 | a | 41.17 | a | 59.23 | 74.37 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 37.40 | e | ||
1924 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 60.66 | b | 47.23 | 43.57 | a | 27.37 | 8.13 | 37.39 | g | |||
1925 | 16.23 | a | 26.43 | 33.26 | 38.67 | 51.52 | ----- | z | 63.45 | 60.77 | 55.93 | 34.00 | 29.69 | a | ----- | z | 41.00 | b | ||||||||
1926 | ----- | z | 31.46 | ----- | z | ----- | z | ----- | z | 56.80 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 44.13 | j | ||
1927 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 41.65 | ----- | z | ----- | z | 41.65 | k | |
1928 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 53.90 | 60.39 | c | 59.67 | g | 50.90 | a | 40.32 | 28.27 | 21.57 | a | 42.56 | f | |||
1929 | 15.11 | c | 14.29 | 27.77 | 36.53 | 42.42 | 55.70 | 62.48 | 61.43 | a | 48.83 | 36.37 | a | 20.90 | a | 19.41 | b | 36.77 | ||||||||
1930 | 3.81 | 27.07 | 23.43 | c | 38.27 | 42.48 | 54.40 | 62.90 | a | 61.29 | 56.57 | i | ----- | z | 25.52 | g | 11.61 | 36.14 | c | |||||||
1931 | 21.20 | a | 26.14 | ----- | z | 36.00 | 39.19 | 56.10 | a | 62.19 | 59.94 | 58.13 | 42.90 | 25.23 | 22.83 | a | 40.90 | a | ||||||||
1932 | 15.61 | ----- | z | 18.94 | 36.97 | a | 48.03 | 54.50 | 64.42 | 61.45 | 48.87 | 33.17 | a | 23.93 | 9.65 | 37.78 | a | |||||||||
1933 | 20.37 | a | 11.61 | 27.47 | a | 31.80 | 42.29 | 58.33 | 62.10 | 59.03 | a | 56.20 | 37.74 | 29.00 | a | 25.71 | 38.47 | |||||||||
1934 | 18.84 | 19.75 | 23.29 | 35.20 | 48.55 | 59.50 | 67.32 | c | 63.32 | 47.69 | a | 43.61 | 30.40 | 18.68 | 39.68 | |||||||||||
1935 | 20.74 | 22.29 | 31.13 | 34.77 | 43.71 | 58.43 | 67.52 | 62.39 | 52.30 | 41.06 | 25.77 | 21.58 | 40.14 | |||||||||||||
1936 | 17.50 | a | 9.34 | 29.58 | 32.33 | 51.68 | 56.50 | x | 64.52 | h | 62.16 | 52.63 | 36.90 | 25.57 | 21.94 | 33.96 | b | |||||||||
1937 | 8.06 | 18.71 | 26.29 | 35.57 | 49.10 | 56.50 | 62.52 | 62.48 | 53.10 | 39.77 | 25.27 | 18.03 | a | 37.95 | ||||||||||||
1938 | 19.52 | 22.82 | 31.00 | j | 36.37 | 47.55 | 59.40 | 62.29 | 62.74 | 53.93 | 44.06 | 23.37 | 22.10 | 41.29 | a | |||||||||||
1939 | 23.52 | 14.89 | 27.77 | 38.07 | 47.65 | 55.20 | 62.29 | 58.52 | 55.50 | 39.35 | 24.47 | 22.23 | 39.12 | |||||||||||||
1940 | 7.97 | 24.28 | 28.23 | 35.07 | 46.48 | 54.87 | 63.68 | 58.65 | 54.63 | 42.03 | 24.35 | d | 21.26 | h | 40.02 | a | ||||||||||
1941 | 22.68 | 25.78 | a | 27.84 | 38.97 | a | 51.19 | 57.17 | 67.48 | j | 59.11 | m | 50.64 | h | 43.13 | 29.33 | 22.52 | 35.40 | c | |||||||
1942 | 15.32 | 18.86 | 27.35 | 40.67 | 47.13 | 57.33 | 61.71 | 60.77 | 52.48 | a | 39.19 | 27.37 | 17.61 | 38.82 | ||||||||||||
1943 | 18.06 | 23.39 | 22.19 | 40.60 | 42.68 | 56.10 | 61.71 | 63.39 | 48.30 | 35.68 | 25.47 | 19.39 | 38.08 | |||||||||||||
1944 | 17.65 | 22.31 | 22.45 | 33.23 | 46.55 | 54.73 | 59.00 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 36.56 | e | ||||||
1945 | ----- | z | ----- | z | ----- | z | 38.36 | b | ----- | z | 58.93 | c | ----- | z | ----- | z | 42.24 | a | 37.53 | a | ----- | z | ----- | z | 44.26 | h |
1946 | 9.34 | b | 18.50 | 31.96 | c | 39.47 | 43.07 | a | ----- | z | ----- | z | 50.13 | 49.73 | 40.58 | 22.87 | 20.19 | 32.58 | b | |||||||
1947 | 15.94 | 17.43 | 26.87 | a | 36.93 | 46.23 | a | ----- | z | ----- | z | ----- | z | 49.67 | ----- | z | ----- | z | ----- | z | 32.18 | f | ||||
1948 | ----- | z | 14.90 | 18.83 | a | 39.07 | 45.97 | 55.83 | 58.87 | 58.63 | a | 52.20 | 36.35 | 23.43 | 18.74 | 38.44 | a | |||||||||
1949 | 8.93 | b | ----- | z | 27.42 | ----- | z | 49.00 | m | 54.67 | 58.94 | 56.74 | 47.60 | 36.32 | 29.63 | 15.81 | 37.34 | c | ||||||||
1950 | 12.19 | 19.96 | 22.64 | i | 34.07 | 42.65 | 55.60 | 59.77 | 55.94 | 52.40 | 44.19 | 24.67 | 20.03 | 38.32 | a | |||||||||||
1951 | 14.84 | 20.79 | 22.42 | 34.17 | 46.10 | 51.07 | 61.19 | 60.13 | 48.43 | 36.68 | 21.97 | 14.43 | a | 36.02 | ||||||||||||
1952 | 19.35 | 20.38 | 22.10 | 35.33 | 45.87 | 62.07 | 61.90 | 63.10 | 51.43 | 36.39 | 29.21 | p | 19.23 | a | 39.74 | a | ||||||||||
1953 | 24.03 | 19.21 | 29.65 | 32.83 | 43.68 | 59.87 | 63.39 | 59.74 | 51.87 | 40.06 | 29.57 | 19.94 | 39.49 | |||||||||||||
1954 | 19.00 | 27.14 | 24.65 | 39.23 | 44.97 | b | 56.87 | 63.83 | a | 60.10 | 55.43 | 39.94 | 28.13 | 21.48 | 40.06 | |||||||||||
1955 | 17.35 | 14.61 | 22.84 | 36.57 | 47.19 | e | 52.20 | 61.87 | 60.42 | 51.27 | 38.71 | 23.90 | 20.00 | 37.24 | ||||||||||||
1956 | 18.19 | 17.97 | 32.25 | w | 32.17 | 48.48 | 57.47 | 57.03 | 54.16 | 47.03 | 39.61 | 27.10 | 22.32 | 38.32 | a | |||||||||||
1957 | 15.77 | 26.61 | 28.90 | 36.03 | 47.58 | 53.67 | 62.53 | a | 60.83 | a | 48.67 | 43.13 | 28.27 | 24.42 | 39.70 | |||||||||||
1958 | 20.23 | 24.29 | 25.52 | 37.33 | 51.52 | 57.37 | 59.90 | 60.10 | 53.57 | 38.84 | 25.97 | 21.35 | 39.66 | |||||||||||||
1959 | 14.97 | 20.61 | 24.74 | 33.87 | 46.55 | 55.38 | a | 58.13 | a | 60.68 | 48.00 | 36.90 | 23.93 | 23.80 | a | 37.30 | ||||||||||
1960 | 17.55 | 16.21 | 24.94 | 39.97 | 44.33 | a | 56.03 | 58.29 | 59.42 | 51.20 | 40.55 | 27.64 | b | 23.23 | a | 38.28 | ||||||||||
1961 | 18.77 | 24.25 | 30.19 | 34.17 | 46.87 | 56.70 | 60.90 | 59.45 | 47.23 | 36.94 | 25.10 | a | 17.87 | 38.20 | ||||||||||||
1962 | 12.10 | 22.50 | 22.55 | 37.90 | 48.77 | 55.07 | 60.06 | 58.52 | 50.33 | 40.97 | 28.27 | 22.23 | 38.27 | |||||||||||||
1963 | 5.13 | 24.43 | 28.42 | 38.90 | 49.32 | 55.73 | 62.03 | 61.97 | 55.57 | 44.35 | 28.13 | 14.97 | 39.08 | |||||||||||||
1964 | 18.29 | 17.59 | 22.43 | a | 33.57 | 44.52 | 53.03 | 63.65 | 54.29 | ----- | z | 36.45 | 28.67 | 14.24 | n | 37.25 | b | |||||||||
1965 | 23.03 | b | 17.93 | 17.71 | 36.27 | 42.35 | 53.67 | 59.03 | 55.61 | 48.40 | 40.35 | 34.00 | 22.13 | 37.54 | ||||||||||||
1966 | 10.90 | a | 18.52 | a | 29.77 | 33.97 | a | 47.77 | 55.97 | 63.57 | h | 58.12 | e | 45.63 | ----- | z | 23.40 | 17.93 | a | 34.20 | b | |||||
1967 | 24.52 | h | 21.07 | 33.17 | a | 41.87 | 42.26 | 60.09 | g | 63.16 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 40.30 | g | ||||
1968 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1969 | ----- | z | ----- | z | ----- | z | 41.64 | h | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1970 | ----- | z | ----- | z | ----- | z | ----- | z | 45.71 | g | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1971 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 41.80 | o | 38.90 | a | 27.72 | a | 21.97 | 29.53 | i | |
1972 | 15.20 | a | 18.65 | c | 28.00 | e | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 20.62 | i |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 15.93 | 19.50 | 26.34 | 35.98 | 45.66 | 56.02 | 61.64 | 59.55 | 50.92 | 39.05 | 26.15 | 18.67 | 37.92 | |||||||||||||
S.D. | 4.66 | 4.68 | 4.05 | 2.67 | 3.42 | 2.66 | 2.98 | 2.76 | 3.13 | 3.21 | 2.91 | 4.11 | 1.32 | |||||||||||||
SKEW | -0.47 | 0.18 | 0.09 | 0.35 | 0.35 | 1.06 | 1.15 | -1.17 | -0.14 | -0.27 | 0.02 | -0.55 | -0.11 | |||||||||||||
MAX | 25.07 | 31.46 | 35.81 | 41.87 | 55.77 | 66.14 | 74.37 | 63.39 | 58.13 | 44.55 | 34.00 | 27.39 | 40.14 | |||||||||||||
MIN | 3.81 | 9.34 | 17.71 | 31.39 | 39.19 | 51.07 | 54.16 | 50.13 | 42.24 | 30.74 | 20.20 | 8.13 | 35.14 | |||||||||||||
YRS | 58 | 60 | 58 | 61 | 60 | 59 | 56 | 56 | 58 | 59 | 59 | 56 | 33 |