YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1895 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 44.20 | 48.68 | 46.58 | 40.87 | 31.16 | 23.90 | 28.55 | 37.70 | e | |||||||
1896 | 31.80 | a | 31.10 | 30.52 | 34.53 | 40.16 | 47.47 | 53.77 | 49.26 | 41.30 | 34.00 | 27.70 | c | 35.48 | 38.09 | |||||||||||
1897 | 26.87 | a | 28.64 | 28.13 | a | 34.73 | 47.00 | k | 47.27 | 48.20 | a | 50.55 | 41.97 | 32.16 | 29.25 | b | 30.58 | 36.21 | a | |||||||
1898 | 20.70 | a | 33.37 | a | 24.97 | a | 36.53 | 39.06 | 47.30 | 48.90 | 51.45 | 41.60 | 34.97 | 27.69 | a | 20.66 | b | 35.60 | ||||||||
1899 | 29.72 | b | 25.84 | c | 30.94 | 35.93 | 38.39 | 43.07 | 49.71 | 46.61 | 41.70 | 34.48 | 38.37 | 27.47 | a | 36.85 | ||||||||||
1900 | 29.84 | 28.68 | 35.63 | a | 35.47 | 42.32 | 49.50 | 50.10 | 47.39 | 41.57 | 36.26 | 28.13 | 31.77 | 38.05 | ||||||||||||
1901 | 25.20 | f | 30.90 | g | 29.53 | a | 30.68 | b | 37.38 | w | 44.82 | h | 49.46 | c | 51.20 | a | 42.65 | g | 38.19 | d | 33.76 | a | 28.54 | c | 37.34 | e |
1902 | 21.10 | b | 32.11 | a | 31.77 | 36.90 | 43.23 | 44.30 | 46.84 | 47.55 | 40.10 | a | 35.23 | 32.00 | 29.61 | 36.73 | ||||||||||
1903 | 29.16 | 23.57 | 31.50 | a | 33.33 | 39.10 | 51.53 | 49.26 | 49.23 | 41.43 | 34.77 | 35.33 | 26.42 | 37.05 | ||||||||||||
1904 | 28.45 | 29.59 | 33.90 | a | 38.03 | 42.19 | 46.27 | 53.45 | 50.58 | 42.43 | 37.77 | 35.47 | 27.13 | 38.77 | ||||||||||||
1905 | 29.61 | 23.81 | a | 34.68 | 36.73 | 40.58 | 47.77 | 53.13 | 49.13 | 43.62 | a | 34.03 | 23.60 | 28.00 | 37.06 | |||||||||||
1906 | 29.67 | a | 30.43 | 27.29 | 36.63 | 42.23 | 44.40 | 53.19 | 48.84 | 42.47 | 35.90 | 30.90 | a | 30.60 | a | 37.71 | ||||||||||
1907 | 21.03 | a | 31.18 | 33.26 | 34.40 | 39.74 | 45.38 | a | 50.00 | 46.06 | 39.79 | b | 34.32 | f | 30.43 | g | 30.52 | b | 37.14 | b | ||||||
1908 | 28.40 | a | 26.64 | a | 30.61 | 33.07 | 37.45 | 43.87 | 50.77 | 46.35 | 40.30 | 35.43 | h | 29.50 | 23.37 | d | 35.49 | a | ||||||||
1909 | 21.93 | c | 32.14 | 29.19 | 31.23 | 36.84 | 45.47 | 48.60 | a | 42.42 | 43.79 | a | 33.68 | 34.59 | a | 21.39 | c | 35.11 | ||||||||
1910 | 20.62 | b | 26.04 | 35.15 | d | 38.17 | 41.03 | 43.59 | c | 48.48 | 41.13 | 38.10 | 34.97 | 31.53 | 28.27 | a | 35.59 | |||||||||
1911 | 27.32 | f | 20.42 | b | 27.40 | a | 31.75 | b | 36.59 | b | 46.53 | 47.29 | 43.81 | 39.77 | 30.23 | a | 28.40 | 23.83 | a | 34.18 | a | |||||
1912 | 24.71 | 29.04 | a | 27.19 | 34.17 | 40.13 | a | 45.87 | 48.48 | 46.45 | 34.60 | 30.84 | 32.00 | a | 24.03 | a | 34.79 | |||||||||
1913 | 23.10 | 23.89 | 29.42 | 35.70 | 40.03 | 47.40 | 49.39 | 49.19 | 39.47 | 31.42 | 34.00 | a | 21.81 | 35.40 | ||||||||||||
1914 | 31.70 | d | 28.59 | a | 31.61 | 36.60 | 39.39 | 44.70 | 49.32 | 45.68 | 38.07 | 36.32 | 26.57 | 17.21 | b | 35.48 | ||||||||||
1915 | 23.58 | 30.93 | 32.16 | 35.93 | 41.10 | 43.10 | 48.19 | 50.52 | 40.90 | 32.30 | a | 31.40 | 28.71 | 36.57 | ||||||||||||
1916 | 13.29 | 27.18 | a | 32.50 | a | 34.63 | 36.61 | 42.23 | 47.45 | 45.19 | 37.70 | 25.84 | 23.57 | 23.74 | 32.50 | |||||||||||
1917 | 19.25 | c | 25.54 | 25.97 | 35.17 | 40.70 | a | 41.57 | 49.52 | 46.42 | 43.50 | 29.71 | 29.48 | a | 37.68 | 35.37 | ||||||||||
1918 | 28.65 | 28.07 | 30.81 | 29.72 | a | 34.45 | 47.37 | 47.81 | 46.77 | 44.33 | 37.39 | 29.03 | 23.74 | 35.68 | ||||||||||||
1919 | 23.94 | 30.21 | 30.29 | 35.30 | 38.61 | 40.47 | 48.84 | 47.06 | 38.28 | a | 30.10 | 28.17 | 18.21 | b | 34.12 | |||||||||||
1920 | 22.20 | a | 21.17 | 31.10 | 32.17 | a | 34.77 | 44.20 | 48.35 | 46.68 | 41.50 | 36.67 | a | 29.30 | 29.81 | 34.83 | ||||||||||
1921 | 28.23 | 29.82 | 33.61 | 32.31 | a | 40.29 | 48.23 | 45.45 | 45.90 | 36.79 | b | 33.70 | a | 32.40 | 22.94 | 35.81 | ||||||||||
1922 | 16.00 | b | 24.85 | b | 30.48 | 32.37 | 38.29 | 46.10 | a | 49.52 | 49.81 | 38.23 | 36.19 | 27.50 | 23.33 | a | 34.39 | |||||||||
1923 | 28.90 | 19.93 | 26.53 | a | 34.93 | 40.58 | 45.10 | 52.03 | 52.81 | 44.81 | d | 34.89 | d | 28.62 | a | 25.27 | a | 36.20 | ||||||||
1924 | 21.80 | a | 32.24 | 28.58 | 32.27 | 39.00 | 43.00 | n | 46.10 | 44.39 | 40.80 | 36.65 | 31.27 | 19.00 | c | 33.83 | a | |||||||||
1925 | 32.40 | a | 33.22 | a | 30.26 | 37.33 | 42.07 | a | 47.17 | 51.06 | 46.35 | 43.17 | 30.94 | 29.34 | a | 28.35 | 37.64 | |||||||||
1926 | 23.74 | 33.25 | 30.26 | 39.43 | 40.39 | 48.03 | 54.00 | 48.52 | 37.70 | 33.84 | 34.27 | 26.71 | 37.51 | |||||||||||||
1927 | 25.94 | 32.22 | a | 30.03 | a | 32.90 | 39.87 | a | 48.23 | 49.57 | a | 48.94 | 43.60 | 35.97 | 36.55 | a | 19.10 | b | 36.91 | |||||||
1928 | 26.40 | a | 26.38 | 33.94 | 32.20 | 40.55 | 45.33 | 51.90 | 45.61 | 38.90 | 33.90 | 30.13 | 22.41 | b | 35.64 | |||||||||||
1929 | 14.86 | c | 15.56 | a | 32.03 | a | 31.63 | 38.00 | 45.43 | 50.87 | 49.10 | 38.30 | 33.45 | 21.47 | 31.19 | 33.49 | ||||||||||
1930 | 9.11 | d | 34.56 | a | 31.23 | 36.20 | 39.74 | 43.77 | 51.07 | a | 49.87 | 44.00 | 32.61 | 24.77 | 23.48 | b | 35.03 | |||||||||
1931 | 28.23 | a | 26.76 | c | 31.87 | a | 34.03 | 40.97 | 48.17 | 52.16 | 48.13 | 42.80 | 34.90 | 28.18 | b | 27.59 | b | 36.98 | ||||||||
1932 | 23.58 | 14.45 | g | 34.43 | a | 35.37 | 40.39 | 47.40 | 49.71 | 48.23 | a | 39.97 | 37.40 | a | 32.83 | a | 18.83 | h | 38.93 | b | ||||||
1933 | 25.80 | a | 22.00 | a | 32.69 | b | 31.72 | a | 37.87 | a | 50.13 | 52.35 | 50.65 | 41.27 | 39.54 | e | 26.83 | 35.55 | b | 37.20 | ||||||
1934 | 31.97 | 30.57 | 34.00 | 38.63 | 45.32 | 46.27 | 51.00 | 49.10 | 41.20 | 38.27 | a | 35.59 | a | 28.83 | a | 39.23 | ||||||||||
1935 | 28.08 | e | 27.96 | 27.77 | a | 34.10 | a | 37.26 | 45.24 | a | 52.07 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 36.07 | e | ||
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 | 52.32 | 44.10 | 47.24 | i | 44.50 | e | 32.96 | f | 27.75 | c | 42.17 | h | ||
1939 | 38.71 | g | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1940 | 32.50 | y | 34.34 | 34.03 | 38.13 | 43.35 | 49.77 | 52.61 | 48.52 | b | 47.43 | 39.10 | 29.40 | 27.48 | 40.38 | a | ||||||||||
1941 | 30.71 | 34.15 | b | 30.68 | 34.70 | 42.93 | a | 46.63 | 52.16 | 51.90 | 44.40 | j | 35.87 | a | 31.60 | 29.40 | a | 38.25 | a | |||||||
1942 | 19.90 | b | 27.32 | 28.06 | 35.17 | 39.94 | 42.90 | a | 51.68 | 48.74 | 39.77 | 34.23 | 31.70 | 28.35 | 35.65 | |||||||||||
1943 | 17.03 | 27.22 | a | 28.00 | 37.66 | a | 37.23 | 42.03 | 47.23 | 45.45 | 40.47 | 36.90 | 30.00 | 23.45 | 34.39 | |||||||||||
1944 | 22.23 | 27.07 | 27.43 | j | 34.47 | 38.97 | 45.77 | 50.71 | 47.03 | b | 41.83 | 35.90 | 28.53 | 23.42 | 35.99 | a | ||||||||||
1945 | 25.52 | b | 30.15 | a | 29.74 | 34.10 | 41.58 | 44.27 | 48.61 | 48.94 | 39.30 | 33.61 | 31.70 | 23.80 | a | 35.94 | ||||||||||
1946 | 24.81 | 26.54 | 30.71 | 31.23 | 38.45 | 44.70 | 50.10 | 47.32 | 40.27 | 32.57 | a | 26.47 | 25.55 | 34.89 | ||||||||||||
1947 | 18.19 | 27.82 | ----- | z | 34.00 | 42.23 | 46.40 | 50.35 | 45.81 | 43.27 | 41.38 | b | 32.47 | 28.19 | 37.28 | a | ||||||||||
1948 | 23.45 | 21.07 | 28.29 | 32.60 | 39.71 | 49.17 | a | 47.58 | 45.10 | 39.03 | a | 31.23 | a | 27.14 | a | 19.29 | 33.64 | |||||||||
1949 | 3.81 | 25.11 | 29.81 | 28.93 | 40.10 | 43.38 | a | 48.13 | 47.61 | 40.80 | 26.39 | 28.40 | 25.67 | a | 32.34 | |||||||||||
1950 | 19.34 | b | 27.46 | 28.74 | 29.77 | 36.32 | 47.07 | 49.87 | 48.77 | 40.87 | 40.80 | a | 34.60 | 34.74 | 36.53 | |||||||||||
1951 | 25.45 | 29.11 | 26.06 | ----- | z | ----- | z | ----- | z | 49.13 | a | 44.97 | 38.34 | a | 34.16 | 28.10 | a | 24.16 | 33.28 | c | ||||||
1952 | 23.74 | 25.34 | 28.20 | f | 33.73 | 41.87 | a | 44.87 | 48.26 | 47.77 | 40.57 | 32.81 | 17.97 | 27.77 | 34.97 | a | ||||||||||
1953 | 35.39 | 27.93 | 28.97 | 31.93 | 38.65 | 41.43 | 46.42 | 49.13 | a | 40.14 | a | 32.10 | 35.43 | 26.42 | 36.16 | |||||||||||
1954 | 26.90 | a | 29.13 | e | 23.29 | 33.00 | 38.29 | 42.63 | 46.32 | 44.77 | 39.27 | 31.45 | 30.77 | 21.90 | 33.98 | |||||||||||
1955 | 21.87 | a | 23.11 | 24.87 | 31.43 | 37.00 | 45.67 | 47.87 | 45.16 | 40.33 | 36.36 | i | 28.63 | 27.58 | 33.96 | a | ||||||||||
1956 | 26.80 | a | 20.41 | 28.23 | 29.63 | 43.06 | 44.23 | 50.48 | 47.90 | 39.00 | 35.26 | 25.04 | e | 23.67 | a | 34.48 | ||||||||||
1957 | 11.58 | 27.54 | 34.85 | d | 34.43 | 42.83 | a | 49.75 | b | 49.18 | c | 47.14 | c | 41.62 | a | 38.13 | 25.18 | b | 29.23 | 35.96 | ||||||
1958 | 29.47 | a | 36.46 | 27.68 | 34.79 | a | 44.07 | a | 50.26 | c | 50.45 | 51.70 | a | 41.30 | 31.81 | 30.63 | 30.14 | b | 38.23 | |||||||
1959 | 30.23 | 29.32 | 29.94 | 33.93 | 37.53 | a | 47.00 | b | 48.94 | 46.71 | 42.21 | a | 36.42 | 22.97 | 22.35 | 35.63 | ||||||||||
1960 | 21.45 | 27.07 | 30.29 | 35.50 | 37.90 | 45.20 | 52.13 | 46.71 | 40.67 | 34.61 | 30.83 | 23.77 | 35.51 | |||||||||||||
1961 | 27.32 | 34.29 | 34.24 | b | 34.90 | a | 41.39 | 49.20 | 51.94 | 52.81 | 39.73 | 35.45 | 25.30 | 27.61 | 37.85 | |||||||||||
1962 | 19.97 | 28.14 | 30.16 | 36.87 | 40.84 | 44.00 | 48.81 | 47.94 | 40.70 | 35.16 | 32.69 | a | 26.71 | 36.00 | ||||||||||||
1963 | 15.42 | 33.57 | 30.23 | 34.37 | 42.10 | 46.27 | 47.03 | 47.68 | 46.80 | 38.35 | 33.63 | 25.48 | 36.74 | |||||||||||||
1964 | 27.81 | 21.79 | 28.23 | 30.20 | 37.23 | 46.30 | 50.58 | 46.57 | a | 38.60 | 33.16 | 29.37 | 29.03 | a | 34.90 | |||||||||||
1965 | 28.84 | 30.04 | 23.19 | 36.63 | 37.71 | 45.50 | 49.97 | 50.06 | 36.63 | 34.94 | 33.27 | 23.32 | 35.84 | |||||||||||||
1966 | 26.52 | 26.32 | 29.55 | 32.90 | 39.71 | 45.10 | 48.26 | 46.94 | 44.93 | 34.45 | 34.47 | 29.58 | 36.56 | |||||||||||||
1967 | 30.35 | 27.36 | 29.00 | 30.27 | 38.45 | 46.93 | 50.00 | 49.26 | 43.83 | 35.65 | 30.27 | 22.61 | 36.16 | |||||||||||||
1968 | 24.68 | 32.38 | 30.90 | 31.90 | 39.65 | 47.57 | 50.55 | 50.06 | 42.17 | 34.90 | 33.00 | 27.16 | 37.08 | |||||||||||||
1969 | 22.39 | 26.25 | 26.48 | 33.27 | 41.58 | 48.73 | 47.68 | 45.29 | 42.50 | 30.94 | 25.33 | 28.29 | 34.89 | |||||||||||||
1970 | 29.52 | 27.75 | 28.45 | 28.53 | 38.74 | 49.70 | 49.94 | 46.35 | 38.27 | 32.10 | 33.17 | 26.00 | 35.71 | |||||||||||||
1971 | 25.81 | 24.89 | 27.48 | 31.60 | 40.39 | 44.23 | 49.16 | 51.65 | 37.53 | 32.19 | 31.23 | 25.39 | 35.13 | |||||||||||||
1972 | 23.94 | 29.55 | 32.48 | 31.30 | 39.42 | 45.87 | 48.52 | 48.48 | 38.40 | 30.94 | 30.97 | 20.26 | 35.01 | |||||||||||||
1973 | ----- | z | 28.75 | 29.77 | 31.67 | 40.26 | 46.57 | 48.16 | 46.39 | 42.23 | 34.10 | ----- | z | ----- | z | 38.65 | c | |||||||||
1974 | 21.81 | 29.00 | 30.84 | ----- | z | 37.52 | 47.50 | 49.19 | 47.35 | 36.93 | 29.55 | 31.00 | 25.35 | 35.10 | a | |||||||||||
1975 | 26.87 | 27.46 | 27.39 | 30.07 | 37.42 | 44.70 | 54.35 | 46.29 | 37.97 | ----- | z | ----- | z | 28.00 | 36.05 | b | ||||||||||
1976 | 25.19 | 25.79 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 42.17 | 30.10 | ----- | z | 18.68 | 28.39 | g | |||||
1977 | 15.45 | 25.39 | 27.81 | 32.87 | 38.03 | 47.00 | 48.32 | 50.45 | 42.10 | ----- | z | ----- | z | ----- | z | 36.38 | c | |||||||||
1978 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 40.93 | ----- | z | ----- | z | ----- | z | 40.93 | k | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 24.24 | 27.89 | 30.02 | 33.86 | 39.70 | 45.97 | 49.73 | 47.75 | 40.77 | 34.35 | 29.93 | 26.16 | 35.91 | |||||||||||||
S.D. | 5.73 | 3.95 | 2.76 | 2.50 | 2.15 | 2.30 | 1.97 | 2.31 | 2.36 | 3.19 | 3.79 | 4.11 | 1.43 | |||||||||||||
SKEW | -0.99 | -0.40 | -0.12 | 0.00 | 0.07 | 0.02 | 0.30 | -0.06 | 0.21 | 0.18 | -0.46 | 0.20 | -0.09 | |||||||||||||
MAX | 35.39 | 36.46 | 35.63 | 39.43 | 45.32 | 51.53 | 54.35 | 52.81 | 47.43 | 44.50 | 38.37 | 37.68 | 39.23 | |||||||||||||
MIN | 3.81 | 15.56 | 23.19 | 28.53 | 34.45 | 40.47 | 45.45 | 41.13 | 34.60 | 25.84 | 17.97 | 17.21 | 32.34 | |||||||||||||
YRS | 74 | 76 | 74 | 75 | 74 | 75 | 79 | 78 | 77 | 74 | 73 | 76 | 58 |