YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1903 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 51.40 | p | 43.13 | 37.42 | 31.13 | 25.90 | 34.40 | h | ||||
1904 | 26.87 | 27.34 | 30.56 | o | 35.83 | 41.45 | 44.23 | 52.68 | 50.00 | b | 43.03 | ----- | z | ----- | z | ----- | z | 40.18 | d | |||||||
1905 | ----- | z | ----- | z | 33.42 | g | 35.80 | 40.77 | 48.50 | ----- | z | 48.90 | a | 43.43 | 33.94 | 26.17 | ----- | z | 39.64 | e | ||||||
1906 | ----- | z | ----- | z | ----- | z | 34.04 | b | ----- | z | ----- | z | 48.68 | ----- | z | 40.67 | 39.06 | 32.10 | 31.48 | 37.67 | f | |||||
1907 | 18.26 | 27.57 | 32.81 | 35.87 | 41.10 | ----- | z | 52.42 | 47.94 | 44.97 | 36.42 | 27.48 | a | 25.53 | a | 35.49 | a | |||||||||
1908 | 24.00 | 27.36 | a | 31.13 | 36.13 | 41.47 | a | 44.48 | a | 52.61 | 49.00 | a | 44.07 | 35.23 | 29.37 | 24.04 | c | 36.57 | ||||||||
1909 | 15.60 | a | 29.15 | a | 30.03 | 31.37 | 39.63 | a | 45.77 | 49.48 | 46.52 | 44.53 | 35.52 | b | 32.60 | 22.74 | 35.24 | |||||||||
1910 | 17.07 | c | 20.43 | 32.16 | 37.66 | a | 42.29 | 44.73 | 49.94 | 43.90 | 42.10 | 36.84 | 33.50 | 28.81 | 35.79 | |||||||||||
1911 | 22.16 | 21.50 | 26.39 | 32.47 | 39.68 | 50.07 | 49.19 | 47.55 | 42.80 | 31.00 | 24.59 | a | 24.87 | 34.35 | ||||||||||||
1912 | 23.47 | a | 28.71 | a | 26.50 | a | 34.93 | 42.77 | 48.37 | 50.77 | 50.13 | a | 39.67 | 34.00 | 31.47 | 26.29 | 36.42 | |||||||||
1913 | 17.79 | b | 14.21 | 27.10 | 34.10 | 42.10 | 49.00 | 51.29 | 51.10 | 41.63 | 35.90 | a | 33.87 | 22.19 | 35.02 | |||||||||||
1914 | 28.13 | 26.61 | 33.23 | 37.07 | 43.42 | 47.77 | 53.29 | 49.26 | 44.20 | 40.13 | 32.10 | 17.23 | 37.70 | |||||||||||||
1915 | 21.52 | 27.68 | 34.06 | 39.27 | 43.94 | 46.53 | 50.35 | 53.97 | 43.43 | 37.71 | 31.60 | 25.84 | 37.99 | |||||||||||||
1916 | 7.94 | 23.86 | 33.29 | 35.77 | 37.32 | 46.50 | 51.87 | 48.32 | 44.60 | 30.29 | 25.13 | 18.84 | 33.64 | |||||||||||||
1917 | 18.81 | 25.89 | 25.10 | 35.13 | 41.29 | 44.43 | 51.00 | 47.55 | 46.63 | 34.19 | 31.97 | 33.45 | 36.29 | |||||||||||||
1918 | 28.39 | 24.46 | 31.81 | 33.97 | 39.10 | 50.33 | 54.29 | 52.23 | 48.40 | 41.44 | d | 32.23 | d | 27.55 | k | 39.70 | a | |||||||||
1919 | 14.93 | q | 26.00 | j | 31.72 | f | 36.38 | i | 41.45 | 47.13 | 51.45 | 51.90 | 43.52 | g | 34.52 | 27.83 | 12.03 | b | 38.05 | e | ||||||
1920 | 19.61 | 26.17 | 29.71 | 34.06 | m | 38.32 | 46.83 | a | 54.10 | 53.06 | 44.45 | h | 36.04 | g | 31.73 | 27.90 | a | 36.38 | c | |||||||
1921 | 26.00 | 27.92 | b | 34.25 | c | 35.30 | 41.90 | 52.03 | a | 50.97 | 51.68 | 40.40 | 36.68 | 31.50 | 24.48 | 37.76 | ||||||||||
1922 | 15.13 | a | 17.12 | d | 27.65 | 33.03 | 37.94 | 48.70 | 52.52 | 53.55 | 42.77 | 36.81 | 26.46 | b | 19.32 | 34.25 | ||||||||||
1923 | 27.42 | 19.93 | 28.48 | 34.10 | 41.87 | 47.90 | 55.19 | 52.61 | 44.43 | 38.35 | 31.93 | 26.23 | 37.37 | |||||||||||||
1924 | 18.87 | 32.43 | a | 29.32 | 34.10 | 41.91 | i | 46.47 | 52.58 | 50.03 | 42.73 | 35.20 | a | 31.43 | 17.07 | a | 35.48 | a | ||||||||
1925 | 28.19 | 31.57 | 32.77 | 38.30 | 44.58 | 50.83 | a | 53.40 | a | 52.71 | c | 47.00 | a | 34.26 | 31.64 | b | 33.13 | 39.87 | ||||||||
1926 | 27.48 | 31.54 | 31.63 | a | 38.72 | a | 43.34 | b | 46.66 | a | 53.29 | c | 50.43 | a | 41.67 | 38.41 | b | 31.93 | b | 26.68 | c | 38.48 | ||||
1927 | 24.87 | a | 29.54 | b | 30.30 | a | 33.43 | b | 41.21 | c | 49.03 | a | 49.21 | b | 50.63 | a | 44.24 | e | 38.20 | f | 35.81 | c | 16.03 | 36.76 | a | |
1928 | 24.04 | d | 23.77 | c | 31.17 | h | 35.08 | d | 41.96 | e | 45.46 | b | 53.25 | c | 46.85 | d | 39.04 | b | 35.63 | a | 17.89 | l | 10.10 | u | 38.34 | c |
1929 | 14.21 | c | 10.65 | e | 29.00 | 31.63 | 37.90 | 46.03 | 48.39 | 50.96 | f | 40.73 | 34.03 | 24.27 | 30.23 | a | 31.55 | a | ||||||||
1930 | 7.74 | 29.43 | 30.90 | 40.45 | a | 41.87 | a | 46.13 | 53.29 | 54.42 | 46.33 | 38.03 | 28.21 | b | 20.16 | 36.41 | ||||||||||
1931 | 28.30 | a | 27.75 | 31.90 | 35.10 | 43.03 | 49.53 | 53.03 | 50.03 | 44.27 | 34.42 | 27.57 | 22.77 | 37.31 | ||||||||||||
1932 | 23.52 | 21.41 | 31.32 | 36.17 | 42.48 | 47.63 | 51.03 | 51.77 | 39.13 | 36.84 | 32.14 | b | 16.97 | b | 35.87 | |||||||||||
1933 | 24.42 | 19.26 | a | 31.16 | 35.60 | 40.55 | b | 51.73 | 53.10 | 52.65 | 43.70 | 39.61 | 35.27 | 34.16 | 38.43 | |||||||||||
1934 | 33.03 | 33.18 | 35.94 | 41.33 | 45.94 | 50.87 | 53.58 | 51.68 | 42.73 | 41.29 | ----- | z | 29.71 | 41.75 | a | |||||||||||
1935 | 23.23 | 26.21 | 29.90 | 34.80 | 43.06 | n | 47.53 | 52.87 | 49.48 | 43.77 | 36.60 | a | 28.53 | 25.97 | 36.26 | a | ||||||||||
1936 | 27.74 | 16.91 | f | 30.74 | 39.03 | a | 46.81 | 54.47 | 56.06 | 53.94 | 44.76 | e | 34.97 | 22.23 | 28.35 | 39.92 | a | |||||||||
1937 | 5.03 | a | 21.43 | 31.61 | 36.23 | 41.65 | 44.97 | 57.48 | 51.29 | 47.60 | 41.42 | 35.83 | 30.03 | 37.05 | ||||||||||||
1938 | 28.90 | 29.54 | 34.45 | 37.80 | 43.03 | a | 52.30 | 57.42 | 50.90 | 51.50 | 43.10 | 28.33 | 25.65 | 40.24 | ||||||||||||
1939 | 30.42 | 25.43 | 33.68 | f | 37.73 | 44.26 | 48.72 | a | 56.29 | 52.58 | 46.24 | a | 39.97 | 29.23 | 32.10 | 40.27 | a | |||||||||
1940 | 26.35 | 30.52 | 34.06 | 39.77 | 42.16 | 48.03 | 54.03 | 49.42 | 52.70 | 43.68 | 29.70 | 26.78 | d | 39.77 | ||||||||||||
1941 | 26.58 | 29.29 | ----- | z | 39.10 | 47.00 | 53.17 | 57.71 | 58.94 | 45.30 | 39.23 | 31.27 | 26.23 | 41.25 | a | |||||||||||
1942 | 16.39 | 25.85 | a | 27.23 | 36.37 | 43.29 | 47.70 | 54.45 | 51.97 | 43.47 | 36.42 | 29.47 | 28.35 | 36.75 | ||||||||||||
1943 | 19.81 | 27.29 | 26.37 | a | 38.57 | 42.13 | 47.47 | 54.35 | 50.20 | a | 43.43 | 39.55 | 30.50 | 25.68 | 37.11 | |||||||||||
1944 | 21.10 | 26.31 | 27.42 | 37.43 | 44.71 | 50.93 | 53.77 | a | 49.77 | 45.50 | 37.26 | 32.73 | 29.16 | 38.01 | ||||||||||||
1945 | 29.07 | a | 30.82 | 30.61 | 35.83 | 44.13 | 48.90 | 53.06 | 51.87 | 45.37 | 38.84 | 33.47 | 26.48 | 39.04 | ||||||||||||
1946 | 26.77 | 30.46 | 34.23 | 37.55 | a | 39.94 | 47.33 | 52.87 | 51.48 | 46.07 | 35.16 | 31.57 | 29.29 | 38.56 | ||||||||||||
1947 | 19.87 | 28.25 | 33.39 | 38.13 | 45.74 | 50.13 | 52.81 | 50.26 | 48.13 | 45.03 | 34.37 | 31.94 | 39.84 | |||||||||||||
1948 | 23.48 | 27.28 | 29.87 | 37.67 | 45.97 | 54.93 | 52.42 | 52.23 | 44.63 | 36.35 | 31.97 | 18.03 | 37.90 | |||||||||||||
1949 | 3.77 | 23.89 | 31.06 | 37.77 | 45.42 | 48.10 | 51.68 | 52.81 | 45.50 | 33.85 | e | 34.57 | 25.80 | a | 36.18 | |||||||||||
1950 | 11.07 | a | 24.25 | 32.19 | 35.43 | 38.74 | 48.20 | 52.45 | 52.00 | 42.60 | 40.16 | 33.93 | 35.00 | 37.17 | ||||||||||||
1951 | 25.61 | 27.18 | 28.97 | 33.61 | b | 42.79 | b | 46.43 | 54.13 | 52.03 | 44.33 | c | 40.86 | i | 32.50 | h | 24.83 | a | 37.99 | b | ||||||
1952 | 22.20 | a | 26.21 | 30.87 | 36.59 | c | 44.57 | a | 49.97 | a | 49.94 | 50.38 | b | 41.97 | a | 34.42 | 26.73 | 29.21 | b | 36.92 | ||||||
1953 | 35.10 | 31.48 | a | 31.90 | 36.58 | d | 40.61 | 46.97 | 51.61 | 53.35 | 44.27 | 37.28 | b | 35.10 | a | 31.74 | 39.67 | |||||||||
1954 | 26.10 | a | 31.56 | a | 28.84 | 37.17 | 43.32 | 47.23 | 53.16 | 50.97 | 45.70 | 34.23 | 34.76 | a | 24.85 | e | 38.16 | |||||||||
1955 | 28.28 | b | 25.14 | 25.32 | 34.90 | 41.13 | 48.13 | 54.45 | 49.19 | 43.90 | 39.46 | c | 25.68 | b | 24.03 | 36.64 | ||||||||||
1956 | 24.87 | 22.04 | a | 28.90 | 35.50 | 44.55 | 47.67 | 54.00 | 51.77 | 44.79 | b | 38.62 | b | 30.11 | b | 28.74 | 37.63 | |||||||||
1957 | 14.16 | 27.50 | d | 31.87 | 36.07 | 48.87 | 50.87 | 51.97 | a | 50.14 | c | 44.39 | b | 40.04 | d | 28.85 | d | 29.50 | a | 37.85 | ||||||
1958 | 27.33 | a | 34.37 | a | 30.18 | c | 37.32 | b | 47.55 | 54.37 | 55.90 | 54.10 | 45.14 | b | 36.07 | b | 32.33 | 33.13 | a | 40.65 | ||||||
1959 | 28.60 | a | 31.11 | 33.03 | 37.34 | a | 40.23 | 49.93 | 52.42 | 51.52 | 48.17 | g | 40.94 | 27.18 | b | 26.42 | 38.06 | a | ||||||||
1960 | 21.68 | 28.14 | 31.55 | b | 38.90 | 43.33 | a | 48.80 | 55.26 | 50.52 | 44.70 | 37.94 | 31.07 | 25.55 | 38.12 | |||||||||||
1961 | 26.71 | 33.68 | 34.19 | 37.83 | 44.68 | 51.83 | 54.77 | 54.68 | 41.87 | 36.77 | 26.81 | c | 27.13 | 39.25 | ||||||||||||
1962 | 21.55 | 28.11 | 31.06 | 37.90 | 44.58 | 48.87 | 50.90 | 52.97 | 45.97 | 41.71 | 36.07 | 31.45 | 39.26 | |||||||||||||
1963 | 17.26 | 31.39 | 33.10 | 37.17 | 44.68 | 52.73 | 52.03 | 53.68 | 50.47 | 41.71 | 34.63 | 27.90 | 39.73 | |||||||||||||
1964 | 28.13 | 27.10 | 30.68 | 36.30 | 43.29 | 49.53 | 54.48 | 51.81 | 43.77 | 38.81 | 33.33 | 25.52 | 38.56 | |||||||||||||
1965 | 30.03 | 30.93 | 26.32 | 39.87 | 42.58 | 47.77 | 53.61 | 54.84 | 42.93 | 39.97 | 37.10 | 28.50 | a | 39.54 | ||||||||||||
1966 | 28.58 | 28.75 | 30.20 | a | 35.83 | 43.26 | 48.20 | 53.39 | 53.90 | 49.87 | 35.81 | 33.23 | 31.97 | 39.42 | ||||||||||||
1967 | 31.45 | 29.07 | 32.39 | 34.83 | 43.16 | 52.03 | 54.68 | 54.65 | 49.73 | 38.68 | 32.83 | 24.87 | 39.86 | |||||||||||||
1968 | 22.94 | 31.69 | 33.55 | 35.70 | 43.35 | 51.73 | 54.03 | 53.23 | 48.30 | 36.00 | 32.70 | 24.61 | 38.99 | |||||||||||||
1969 | 19.52 | 27.21 | 29.13 | 38.70 | 45.32 | 52.97 | 52.32 | 51.29 | 47.57 | 35.29 | 32.17 | 30.10 | 38.47 | |||||||||||||
1970 | 27.65 | 32.29 | 30.97 | 34.20 | 43.94 | 53.43 | 56.06 | 51.84 | 42.77 | 36.97 | 32.97 | 26.19 | 39.11 | |||||||||||||
1971 | 28.71 | 28.96 | 30.68 | 36.03 | 44.90 | 49.63 | 52.97 | 55.81 | 41.63 | 35.74 | 32.53 | 27.23 | 38.74 | |||||||||||||
1972 | 24.00 | 28.38 | 35.23 | 35.03 | 45.23 | 51.83 | 52.65 | 54.29 | 44.33 | 38.42 | 33.90 | 22.74 | 38.84 | |||||||||||||
1973 | 23.84 | 28.07 | 33.42 | 36.37 | 42.87 | 49.70 | 53.84 | 54.29 | 48.27 | 38.94 | 34.03 | 33.35 | 39.75 | |||||||||||||
1974 | 22.68 | 32.32 | 33.03 | 39.47 | 40.81 | 52.07 | 55.39 | 52.68 | 44.03 | 35.81 | 35.57 | 29.39 | 39.44 | |||||||||||||
1975 | 27.35 | 27.75 | 31.71 | 35.33 | 42.42 | 48.07 | 59.42 | 51.97 | 43.17 | 40.39 | 29.70 | 28.43 | a | 38.81 | ||||||||||||
1976 | 27.71 | 26.55 | 29.42 | 36.73 | 43.52 | 47.57 | 54.84 | 53.90 | 47.63 | 35.45 | 33.33 | 24.58 | 38.44 | |||||||||||||
1977 | 21.94 | 28.89 | 32.45 | 37.47 | 44.32 | 52.80 | 54.10 | 55.16 | 47.97 | 37.90 | 29.67 | 30.90 | 39.46 | |||||||||||||
1978 | 29.87 | 33.96 | 35.87 | 39.73 | 43.87 | 49.37 | 55.61 | 54.06 | 47.70 | 34.48 | 27.63 | 20.68 | 39.40 | |||||||||||||
1979 | 11.55 | 27.32 | 32.19 | 38.87 | 45.03 | 49.47 | 54.58 | 54.61 | 46.10 | 39.87 | 28.93 | 30.84 | 38.28 | |||||||||||||
1980 | 20.35 | 31.07 | 33.55 | 41.23 | 46.84 | 50.50 | 54.71 | 48.23 | 46.97 | 35.77 | 33.70 | 32.13 | 39.59 | |||||||||||||
1981 | 32.23 | 29.71 | 31.29 | ----- | z | ----- | z | ----- | z | 48.97 | 51.23 | 44.30 | ----- | z | ----- | z | 25.16 | l | 39.62 | f | ||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 23.07 | 27.31 | 31.03 | 36.53 | 42.85 | 49.03 | 53.15 | 51.61 | 44.70 | 37.41 | 31.13 | 26.56 | 37.98 | |||||||||||||
S.D. | 6.46 | 4.37 | 2.51 | 2.12 | 2.36 | 2.54 | 2.16 | 2.43 | 2.72 | 2.80 | 3.16 | 4.70 | 1.61 | |||||||||||||
SKEW | -0.97 | -1.30 | -0.40 | -0.01 | -0.10 | 0.29 | 0.10 | -0.26 | 0.49 | 0.23 | -0.57 | -0.70 | -0.73 | |||||||||||||
MAX | 35.10 | 34.37 | 35.94 | 41.33 | 48.87 | 54.93 | 59.42 | 58.94 | 52.70 | 45.03 | 37.10 | 35.00 | 40.65 | |||||||||||||
MIN | 3.77 | 10.65 | 25.10 | 31.37 | 37.32 | 44.23 | 48.39 | 43.90 | 39.04 | 30.29 | 22.23 | 12.03 | 33.64 | |||||||||||||
YRS | 75 | 74 | 71 | 75 | 74 | 75 | 77 | 76 | 76 | 74 | 74 | 74 | 59 |