YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1893 | 34.65 | 35.64 | 38.10 | 38.73 | 45.52 | 46.97 | 52.10 | 55.97 | 48.00 | 41.26 | 37.13 | 35.60 | a | 42.47 | ||||||||||||
1894 | 29.39 | 30.21 | 35.00 | 37.97 | 41.87 | 45.30 | 55.39 | 56.65 | 51.37 | 45.52 | 39.80 | 38.94 | 42.28 | |||||||||||||
1895 | 36.16 | 38.14 | 40.06 | 41.57 | 48.42 | 47.27 | 50.84 | 53.06 | 47.43 | 46.94 | o | 38.77 | 31.13 | 42.99 | a | |||||||||||
1896 | 35.81 | 33.76 | h | 40.19 | 38.03 | 46.77 | 53.97 | 59.58 | 57.55 | 51.80 | 48.48 | 39.53 | 36.74 | 46.22 | a | |||||||||||
1897 | 36.35 | 36.74 | a | 37.58 | ----- | z | 46.29 | ----- | z | ----- | z | ----- | z | 51.83 | 44.48 | 37.17 | 28.71 | 39.90 | d | |||||||
1898 | 30.17 | a | 36.93 | 34.19 | ----- | z | ----- | z | ----- | z | 58.10 | 61.19 | 54.33 | 44.87 | 36.87 | 33.39 | 43.34 | c | ||||||||
1899 | 34.35 | 33.96 | 37.90 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 55.60 | 44.61 | 42.80 | 38.10 | 41.05 | e | |||||||
1900 | 39.65 | 38.00 | 40.87 | 41.70 | 48.94 | 54.27 | 57.48 | 53.90 | a | 48.33 | 47.87 | 44.87 | 35.84 | 45.98 | ||||||||||||
1901 | 37.03 | a | 41.30 | a | 39.68 | 39.03 | a | 49.65 | 52.73 | 58.35 | 61.16 | 48.87 | 48.10 | 40.53 | 34.68 | 45.93 | ||||||||||
1902 | 35.29 | c | 36.93 | 38.32 | 42.10 | 47.52 | 52.61 | b | 56.97 | 53.61 | 54.87 | 46.30 | a | 37.67 | c | 35.21 | b | 44.78 | ||||||||
1903 | 35.48 | b | 32.07 | 40.68 | 45.20 | 48.39 | 52.77 | 57.09 | i | 58.58 | 56.33 | 50.77 | 46.57 | ----- | z | 46.68 | b | |||||||||
1904 | ----- | z | ----- | z | ----- | z | ----- | z | 53.75 | c | 61.25 | b | 56.39 | 57.03 | 50.20 | 40.03 | 37.63 | 31.13 | 48.43 | d | ||||||
1905 | ----- | z | ----- | z | 41.77 | a | 47.23 | 48.16 | 49.67 | 55.26 | 56.26 | 50.40 | 46.39 | 40.83 | 33.00 | 46.90 | b | |||||||||
1906 | 35.10 | 44.32 | 43.00 | 44.21 | a | 48.94 | 53.73 | 62.29 | 58.52 | 53.20 | 49.16 | 37.70 | 38.10 | 47.35 | ||||||||||||
1907 | 36.52 | 41.54 | 40.07 | a | 45.67 | 47.26 | 51.63 | 56.00 | 53.58 | 47.57 | 50.84 | 38.87 | 35.81 | 45.44 | ||||||||||||
1908 | 36.13 | 37.03 | 39.94 | 42.87 | 43.32 | 53.67 | 59.50 | o | 58.29 | 53.60 | 42.81 | 39.67 | 32.77 | 43.64 | a | |||||||||||
1909 | 38.58 | 38.18 | 39.23 | 43.70 | 47.61 | 52.67 | 56.48 | 61.87 | 53.23 | 45.45 | 38.13 | 35.90 | 45.92 | |||||||||||||
1910 | 33.32 | 34.39 | 42.52 | 46.67 | 50.10 | 50.83 | 59.68 | 57.97 | 55.27 | 49.16 | 42.93 | 36.03 | 46.57 | |||||||||||||
1911 | 38.65 | 35.89 | a | 45.16 | 45.90 | 45.55 | 52.00 | 59.94 | 55.71 | 52.43 | 46.26 | 39.00 | 31.77 | 45.69 | ||||||||||||
1912 | 35.35 | 34.10 | 41.19 | 42.80 | 48.81 | 53.80 | 56.90 | 55.32 | 52.57 | 47.58 | 42.17 | 32.23 | 45.24 | |||||||||||||
1913 | 30.90 | 38.54 | 38.10 | 42.93 | 47.74 | 52.53 | 59.45 | 60.19 | 57.97 | 46.77 | 43.90 | 36.13 | 46.26 | |||||||||||||
1914 | 39.23 | 39.82 | 43.35 | 46.57 | 50.48 | 53.90 | 58.87 | a | 56.84 | 55.13 | 52.19 | 44.63 | 34.39 | 47.95 | ||||||||||||
1915 | 35.19 | 38.54 | 41.55 | 47.03 | 48.35 | 52.37 | 57.42 | 57.35 | 53.83 | 46.00 | 39.20 | 36.13 | 46.08 | |||||||||||||
1916 | 37.84 | 40.83 | 43.87 | 46.33 | 52.71 | 59.87 | 60.26 | 58.61 | 50.40 | 42.00 | 34.20 | 32.00 | 46.58 | |||||||||||||
1917 | 32.29 | 34.64 | 33.90 | 40.77 | 45.32 | 52.67 | 62.16 | 58.32 | 55.47 | 50.13 | 40.24 | a | 36.61 | 45.21 | ||||||||||||
1918 | 34.65 | 38.04 | 43.87 | 45.53 | 48.68 | 59.17 | 57.77 | 60.48 | 56.97 | 53.35 | 41.57 | 33.84 | 47.83 | |||||||||||||
1919 | 34.39 | 35.75 | 38.52 | 43.87 | 53.03 | 54.77 | 62.55 | 61.10 | 55.17 | 45.23 | 40.73 | 37.32 | 46.87 | |||||||||||||
1920 | 39.16 | 39.97 | 39.06 | 41.40 | 48.84 | 52.47 | 58.19 | 60.19 | 53.80 | 43.58 | 39.33 | 34.13 | 45.84 | |||||||||||||
1921 | 34.90 | 35.64 | 41.74 | 40.63 | 49.42 | 54.30 | 60.81 | 59.19 | 51.77 | 52.35 | 40.27 | 41.03 | 46.84 | |||||||||||||
1922 | 32.77 | 37.89 | 36.58 | 40.47 | 48.23 | 55.50 | 59.48 | 61.74 | 59.50 | 45.45 | 34.70 | 41.65 | 46.16 | |||||||||||||
1923 | 36.67 | a | 36.04 | 38.52 | 46.50 | 48.19 | 50.13 | 56.87 | 55.74 | 57.43 | 44.03 | 41.57 | 37.37 | a | 45.75 | |||||||||||
1924 | 34.48 | 36.34 | 38.13 | 42.87 | 49.39 | 52.62 | a | 52.65 | 53.52 | 51.90 | 40.61 | 40.00 | 34.84 | 43.95 | ||||||||||||
1925 | 31.35 | 38.96 | 39.71 | 44.07 | 48.45 | 54.43 | 58.71 | 53.10 | 48.43 | 46.87 | 37.57 | 37.23 | 44.91 | |||||||||||||
1926 | 32.39 | 40.93 | 45.68 | 49.77 | 48.81 | 55.97 | 55.81 | 57.19 | 48.33 | 46.68 | 41.53 | 35.90 | 46.58 | |||||||||||||
1927 | 35.33 | a | 42.07 | 39.06 | 43.73 | 47.29 | 51.70 | 58.71 | 56.06 | 50.13 | 47.06 | 42.10 | 36.03 | 45.77 | ||||||||||||
1928 | 34.32 | 35.66 | 42.19 | 39.07 | 51.87 | 51.77 | 54.45 | 55.87 | 53.60 | 44.71 | 38.90 | 33.32 | 44.64 | |||||||||||||
1929 | 33.39 | 33.46 | 37.32 | 41.93 | 46.77 | 50.37 | 56.55 | 61.45 | 55.33 | 47.87 | 35.93 | 36.55 | 44.74 | |||||||||||||
1930 | 38.10 | 39.18 | 41.65 | 46.00 | 45.61 | 51.97 | 56.71 | 57.74 | 50.83 | 43.52 | 41.17 | 30.16 | 45.22 | |||||||||||||
1931 | 37.00 | 41.14 | 40.39 | 47.27 | 53.06 | 55.37 | 64.55 | 63.58 | 54.13 | 49.61 | 39.33 | 34.48 | 48.33 | |||||||||||||
1932 | 33.00 | 38.34 | 41.10 | a | 42.40 | 48.65 | 52.30 | 55.45 | 56.42 | 52.77 | 46.81 | 42.07 | 34.23 | 45.29 | ||||||||||||
1933 | 33.06 | 33.18 | 37.55 | 42.43 | 44.55 | 49.70 | 57.65 | 57.84 | 49.80 | 49.06 | 37.87 | 36.26 | 44.08 | |||||||||||||
1934 | 34.61 | 40.79 | 44.90 | 46.00 | 49.29 | 53.77 | 59.32 | 59.23 | 54.63 | 48.94 | 40.63 | 39.48 | 47.63 | |||||||||||||
1935 | 36.74 | 39.14 | 37.61 | 45.57 | 48.87 | 52.03 | 56.32 | 61.16 | 54.93 | 45.26 | 36.47 | 34.39 | 45.71 | |||||||||||||
1936 | 35.19 | 39.21 | 41.23 | 43.63 | 48.23 | 54.03 | 62.06 | 59.68 | 54.40 | 48.61 | 39.63 | 36.16 | 46.84 | |||||||||||||
1937 | 27.87 | 36.68 | 38.77 | 40.80 | 49.90 | 51.87 | 58.81 | 57.84 | 56.53 | 46.26 | 39.10 | 37.74 | 45.18 | |||||||||||||
1938 | 35.87 | 37.54 | 39.81 | 43.07 | 45.61 | 48.60 | 50.94 | ----- | z | ----- | z | ----- | z | 34.00 | 38.16 | 41.51 | c | |||||||||
1939 | 34.32 | 31.82 | 37.68 | ----- | z | 42.65 | 52.76 | a | 57.74 | 58.61 | 58.07 | 54.68 | 40.33 | 36.26 | 45.90 | a | ||||||||||
1940 | 39.68 | 38.14 | 40.90 | 46.73 | 50.10 | 52.13 | 53.10 | 54.61 | 50.47 | 45.52 | 38.27 | 39.77 | 45.78 | |||||||||||||
1941 | 38.29 | 41.54 | 42.45 | 43.23 | 50.87 | 50.87 | 57.23 | 56.16 | 47.30 | 45.00 | 39.43 | 36.29 | 45.72 | |||||||||||||
1942 | 36.84 | 33.18 | 37.48 | 44.80 | 46.26 | 51.10 | 58.55 | 57.42 | 49.17 | 46.71 | 38.97 | 36.03 | 44.71 | |||||||||||||
1943 | 37.68 | 40.36 | 45.26 | 47.20 | 49.19 | 49.63 | 55.06 | 56.84 | 54.47 | 49.00 | 37.57 | 39.26 | 46.79 | |||||||||||||
1944 | 35.71 | 36.72 | 39.45 | 42.03 | 48.71 | 50.33 | 50.58 | 53.97 | 53.90 | 44.42 | 41.20 | 37.65 | 44.56 | |||||||||||||
1945 | 35.19 | 39.46 | 37.58 | 39.67 | 46.45 | 52.00 | 58.26 | 61.81 | 56.80 | 50.52 | 38.33 | 36.00 | 46.01 | |||||||||||||
1946 | 35.23 | 34.43 | 39.77 | 45.67 | 49.45 | 51.57 | 57.55 | ----- | z | 53.96 | d | 44.94 | 37.90 | 37.42 | 44.35 | a | ||||||||||
1947 | 31.42 | 37.86 | 42.39 | 46.70 | 49.32 | 51.40 | 52.23 | 55.03 | 53.97 | 45.39 | 34.33 | 33.74 | 44.48 | |||||||||||||
1948 | 32.06 | 33.48 | 35.87 | 41.48 | a | 45.43 | a | 50.00 | 50.23 | 49.29 | n | ----- | z | ----- | z | ----- | z | ----- | z | 41.22 | e | |||||
1949 | 31.29 | n | 34.36 | 36.84 | 43.47 | 47.58 | 50.47 | 52.68 | 53.16 | 51.90 | 43.23 | 42.10 | 33.23 | 44.45 | a | |||||||||||
1950 | 32.10 | 38.50 | 38.39 | 45.63 | 45.13 | 47.40 | 57.84 | 51.65 | 52.27 | 46.35 | 41.73 | 37.59 | i | 45.18 | a | |||||||||||
1951 | 34.43 | c | 34.25 | 37.13 | 44.70 | 44.84 | 48.23 | 55.77 | 54.77 | 49.77 | 43.06 | 38.67 | 34.81 | 43.37 | ||||||||||||
1952 | 32.74 | 34.76 | 37.00 | 42.87 | 44.48 | 46.20 | 52.90 | 53.84 | 50.73 | 40.29 | 34.73 | 33.81 | 42.03 | |||||||||||||
1953 | 35.83 | a | 28.79 | 36.17 | a | 39.63 | 40.71 | 47.34 | a | 57.45 | 51.97 | 47.93 | 40.23 | 36.50 | 27.81 | 40.86 | ||||||||||
1954 | 31.33 | a | 35.36 | 34.97 | 42.27 | 44.90 | 47.10 | 56.71 | 49.87 | 45.60 | 37.90 | 36.08 | d | 29.20 | f | 42.01 | a | |||||||||
1955 | 31.68 | 31.25 | 36.94 | 36.63 | 44.57 | a | 50.57 | 54.84 | 60.27 | i | 53.80 | 44.06 | 38.63 | 37.13 | 41.83 | a | ||||||||||
1956 | 36.23 | 31.97 | 33.97 | 42.77 | 49.00 | 51.00 | a | 56.81 | 51.84 | 54.03 | 43.58 | 34.50 | 31.94 | 43.14 | ||||||||||||
1957 | 37.68 | 43.39 | 41.45 | 43.55 | a | 48.48 | 54.30 | 56.84 | 56.52 | 52.67 | 47.97 | 37.90 | 37.03 | 46.48 | ||||||||||||
1958 | 32.48 | 41.29 | 39.55 | 42.63 | 48.71 | 50.60 | 52.42 | 60.35 | 54.10 | a | 50.10 | 36.00 | 33.77 | 45.17 | ||||||||||||
1959 | 35.52 | 34.82 | 38.52 | 46.53 | 47.00 | 52.30 | 60.29 | 58.35 | 54.27 | 46.77 | 39.70 | 36.74 | 45.90 | |||||||||||||
1960 | 32.06 | 36.21 | 41.68 | 42.23 | 48.03 | 52.93 | 57.55 | 55.13 | 57.08 | d | 46.55 | 37.63 | 29.97 | 44.75 | ||||||||||||
1961 | 32.84 | 34.04 | 36.55 | 41.60 | 45.29 | 54.40 | 59.94 | 60.94 | 52.73 | 46.32 | 37.77 | 35.39 | 44.82 | |||||||||||||
1962 | 33.35 | 39.04 | 35.61 | 43.23 | 46.06 | 49.80 | 52.45 | 54.26 | 50.87 | 44.16 | 36.83 | 32.74 | 43.20 | |||||||||||||
1963 | 32.40 | a | 42.36 | 37.06 | 39.73 | 48.65 | 51.23 | 52.45 | 55.35 | 56.47 | 47.42 | 39.53 | 29.39 | 44.34 | ||||||||||||
1964 | 29.00 | 30.07 | 36.13 | 41.70 | 44.42 | 49.50 | 55.71 | 56.39 | 48.30 | 49.71 | 35.77 | 35.77 | 42.71 | |||||||||||||
1965 | 33.84 | 32.25 | 41.00 | 43.53 | 46.48 | 49.93 | 54.48 | 58.77 | 49.70 | 47.32 | 43.23 | 36.29 | 44.74 | |||||||||||||
1966 | 30.58 | 33.50 | 38.10 | 43.33 | 49.13 | 51.40 | 54.16 | 57.06 | 52.47 | 45.81 | 40.87 | 35.61 | 44.33 | |||||||||||||
1967 | 32.94 | 33.79 | 41.45 | 37.37 | 46.32 | 47.93 | 60.13 | 62.71 | 57.93 | 45.97 | a | 44.27 | 32.68 | 45.29 | ||||||||||||
1968 | 33.10 | 43.83 | 39.32 | 42.50 | 49.16 | 53.10 | 60.35 | 57.32 | 54.63 | 47.45 | 43.10 | 32.26 | 46.34 | |||||||||||||
1969 | 41.74 | 38.14 | 37.68 | 44.70 | 50.65 | 55.70 | 59.77 | 60.26 | 56.77 | 42.74 | 40.67 | 34.58 | 46.95 | |||||||||||||
1970 | 35.87 | 37.82 | 39.65 | 38.07 | 47.32 | 52.00 | a | 59.16 | 60.81 | 49.73 | 45.68 | 38.90 | 34.55 | 44.96 | ||||||||||||
1971 | 33.48 | 34.29 | 36.42 | 41.50 | 47.97 | 51.57 | 58.16 | 61.23 | 55.97 | 43.87 | 37.30 | 32.61 | 44.53 | |||||||||||||
1972 | 29.06 | 36.72 | 41.16 | 40.90 | 48.97 | 55.63 | 58.94 | 60.19 | 55.17 | 48.26 | 38.77 | 34.29 | 45.67 | |||||||||||||
1973 | 32.48 | 38.54 | 38.81 | 40.60 | 48.77 | 53.10 | 54.65 | 57.52 | 51.43 | 43.61 | 38.93 | 33.87 | 44.36 | |||||||||||||
1974 | 37.48 | 33.07 | 42.77 | 41.03 | 49.19 | 52.87 | 58.35 | 55.84 | 55.73 | 49.52 | 37.77 | 32.45 | 45.51 | |||||||||||||
1975 | 32.35 | 34.89 | 38.71 | 40.60 | 44.94 | 50.00 | 55.42 | 51.29 | 55.83 | 44.19 | 36.63 | 32.97 | 43.15 | |||||||||||||
1976 | 32.71 | 38.57 | a | 37.55 | 41.70 | 49.90 | 51.57 | 57.06 | 52.10 | 60.53 | 48.06 | 40.00 | 30.39 | 45.01 | ||||||||||||
1977 | 36.00 | 35.29 | 33.81 | 43.60 | 46.87 | 54.50 | 57.03 | 61.23 | 55.63 | 50.03 | 40.33 | 42.03 | 46.36 | |||||||||||||
1978 | 41.00 | 39.64 | 46.00 | a | 45.33 | 48.17 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 44.03 | g | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 34.67 | 36.88 | 39.40 | 43.03 | 47.79 | 52.00 | 56.98 | 57.24 | 53.04 | 46.33 | 39.24 | 35.03 | 45.29 | |||||||||||||
S.D. | 2.79 | 3.32 | 2.80 | 2.70 | 2.40 | 2.80 | 2.98 | 3.08 | 3.14 | 3.11 | 2.60 | 2.81 | 1.45 | |||||||||||||
SKEW | 0.06 | -0.04 | 0.24 | -0.10 | -0.24 | 0.41 | -0.23 | -0.16 | -0.14 | -0.00 | 0.26 | -0.06 | -0.57 | |||||||||||||
MAX | 41.74 | 44.32 | 46.00 | 49.77 | 53.75 | 61.25 | 64.55 | 63.58 | 60.53 | 54.68 | 46.57 | 42.03 | 48.33 | |||||||||||||
MIN | 27.87 | 28.79 | 33.81 | 36.63 | 40.71 | 45.30 | 50.23 | 49.87 | 45.60 | 37.90 | 34.00 | 27.81 | 40.86 | |||||||||||||
YRS | 83 | 83 | 85 | 81 | 84 | 82 | 81 | 79 | 83 | 82 | 84 | 81 | 68 |