YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1903 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 47.19 | l | 36.95 | 36.95 | k | |
1904 | 32.26 | 43.34 | 47.50 | 54.28 | 60.40 | a | 69.27 | 71.47 | 70.16 | 62.88 | 53.53 | 45.55 | 36.85 | 53.96 | ||||||||||||
1905 | 37.94 | 39.29 | 44.24 | 49.90 | 59.18 | 70.63 | 71.52 | 70.19 | 63.50 | 52.61 | 43.38 | 31.10 | 52.79 | |||||||||||||
1906 | 33.94 | 45.70 | 47.72 | a | 52.22 | 60.39 | 69.28 | 70.68 | 66.24 | 62.68 | 53.27 | 43.24 | a | ----- | z | 55.03 | a | |||||||||
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1910 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1911 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1912 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1913 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1914 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1915 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1916 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1917 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1918 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1919 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1920 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1921 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1922 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1923 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1924 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1925 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1926 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1927 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1928 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1929 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1930 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1931 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1932 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1933 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1934 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1935 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1939 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1940 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1941 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1942 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1943 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1944 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1945 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 44.73 | s | 39.21 | 39.21 | k | |
1960 | 31.65 | 35.60 | 46.39 | 52.38 | 58.13 | 69.22 | 71.95 | 70.24 | 65.27 | 51.82 | 42.05 | 36.90 | b | 52.63 | ||||||||||||
1961 | 35.88 | a | 39.21 | 42.60 | 49.78 | 56.90 | 69.22 | 71.23 | 69.44 | 62.17 | a | 52.98 | 41.35 | 35.05 | 52.15 | |||||||||||
1962 | 36.24 | 40.62 | 38.35 | 53.37 | 56.06 | 64.02 | 69.42 | 69.90 | 65.38 | 54.55 | 46.08 | 39.32 | 52.78 | |||||||||||||
1963 | 33.32 | 41.50 | 42.69 | 50.33 | a | 59.68 | 63.77 | 71.61 | 67.24 | 64.93 | 56.53 | 44.03 | 36.55 | 52.68 | ||||||||||||
1964 | 31.73 | 32.79 | 39.60 | 46.48 | 57.32 | 64.22 | a | 72.23 | a | 70.05 | 62.70 | 55.31 | 41.50 | 36.71 | 50.89 | |||||||||||
1965 | 38.60 | 36.75 | 40.19 | 49.33 | 55.00 | 62.55 | 70.66 | 69.03 | 61.88 | 54.81 | 46.27 | 37.08 | a | 51.85 | ||||||||||||
1966 | 32.38 | a | 33.80 | 44.98 | 51.37 | 59.53 | 66.07 | 73.77 | 68.63 | 63.02 | 52.35 | 45.78 | 35.85 | 52.30 | ||||||||||||
1967 | 35.61 | 40.52 | 46.69 | 48.08 | 56.48 | 64.75 | 71.74 | 66.92 | 62.23 | 53.74 | 45.57 | 32.87 | 52.10 | |||||||||||||
1968 | 36.05 | 42.57 | 42.72 | a | 47.23 | 56.16 | 65.33 | a | 67.53 | 64.35 | 60.22 | 53.85 | 41.20 | 32.35 | 50.80 | |||||||||||
1969 | 39.34 | 37.77 | 38.39 | 50.33 | 57.27 | 64.63 | 73.66 | b | 72.52 | 63.60 | 51.92 | 42.85 | 39.73 | 52.67 | ||||||||||||
1970 | 34.44 | 40.64 | 39.94 | 43.78 | 58.02 | 65.28 | 72.66 | 70.66 | 62.27 | 47.80 | a | 42.15 | 36.37 | 51.17 | ||||||||||||
1971 | 36.02 | 39.05 | 44.63 | 48.12 | 52.32 | 65.72 | 72.39 | 67.65 | 62.65 | 49.66 | 42.97 | 33.26 | 51.20 | |||||||||||||
1972 | 36.55 | 39.98 | 49.32 | 49.53 | 56.19 | 64.97 | 72.06 | 68.10 | 61.83 | 53.63 | 39.35 | 35.50 | 52.25 | |||||||||||||
1973 | 32.56 | 37.95 | 39.84 | 45.95 | 57.77 | 65.20 | 68.55 | 68.03 | 63.17 | 54.47 | n | 39.86 | i | 36.18 | 51.52 | b | ||||||||||
1974 | 35.23 | 36.75 | 45.30 | a | 48.20 | 58.23 | 69.58 | 68.89 | 66.29 | 60.03 | 53.02 | 42.48 | 33.50 | 51.46 | ||||||||||||
1975 | 35.69 | 37.23 | 41.47 | 44.67 | 54.35 | 64.38 | 68.18 | 68.68 | 61.23 | 53.47 | 43.30 | 39.66 | 51.03 | |||||||||||||
1976 | 35.53 | 43.64 | 43.68 | 50.35 | 58.24 | 66.18 | 69.06 | 67.66 | 63.08 | 51.50 | 44.83 | 36.82 | 52.55 | |||||||||||||
1977 | 37.13 | 42.41 | 42.37 | 51.40 | 57.08 | 66.88 | 71.29 | 70.16 | 65.50 | 56.56 | 47.00 | 42.94 | 54.23 | |||||||||||||
1978 | 37.85 | 39.95 | 46.39 | 51.00 | ----- | z | 67.60 | 72.40 | 67.10 | 63.27 | ----- | z | ----- | z | ----- | z | 55.69 | d | ||||||||
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 68.85 | m | 71.40 | 66.21 | 64.90 | 56.02 | 40.47 | 38.53 | a | 56.25 | f | |||||
1980 | 40.10 | 42.14 | 41.73 | 48.97 | 53.84 | 67.33 | 71.23 | 66.42 | 61.92 | 47.97 | 39.35 | 38.55 | 51.63 | |||||||||||||
1981 | 37.58 | 37.96 | 39.08 | a | 49.85 | 52.61 | 60.98 | 62.24 | 68.42 | 64.32 | 52.97 | 43.38 | 38.74 | j | 51.76 | a | ||||||||||
1982 | 37.77 | 41.24 | a | 44.05 | 51.37 | 56.65 | a | 64.98 | 71.32 | 69.93 | a | 64.83 | 52.12 | a | 42.97 | 35.61 | 52.74 | |||||||||
1983 | 38.32 | 39.70 | a | 43.70 | a | 45.76 | a | 55.89 | 63.85 | 70.26 | 69.39 | 66.29 | a | 54.65 | 42.90 | a | 38.77 | a | 52.46 | |||||||
1984 | 37.23 | 38.64 | d | 44.94 | d | 49.52 | c | 63.28 | a | 66.35 | c | 69.78 | a | 66.81 | 62.67 | 47.69 | b | 41.25 | 39.21 | j | 53.47 | a | ||||
1985 | 35.52 | 37.59 | a | 44.39 | 53.36 | b | 58.17 | b | 67.52 | 74.73 | t | 65.83 | y | 59.24 | c | 51.59 | n | 42.28 | 35.28 | o | 49.76 | d | ||||
1986 | 38.36 | x | ----- | z | 46.65 | a | 51.53 | 57.77 | 66.50 | c | 67.97 | a | ----- | z | 65.95 | s | ----- | z | 43.93 | o | 38.03 | 54.74 | f | |||
1987 | 36.76 | b | 38.89 | 41.77 | 53.98 | 57.00 | i | 68.55 | 70.39 | 69.18 | 62.98 | 58.37 | 43.10 | 34.60 | a | 52.60 | a | |||||||||
1988 | 37.09 | c | 42.47 | 44.77 | 50.95 | 59.74 | 68.15 | 71.65 | 70.15 | 62.34 | a | 58.76 | 44.73 | 36.34 | 53.93 | |||||||||||
1989 | 36.21 | 43.12 | 49.18 | 57.73 | 61.87 | 68.47 | 72.98 | 69.69 | ----- | z | ----- | z | ----- | z | ----- | z | 57.41 | d | ||||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 35.89 | 39.64 | 43.60 | 50.03 | 57.49 | 66.29 | 70.69 | 68.56 | 63.00 | 53.27 | 43.15 | 36.59 | 52.27 | |||||||||||||
S.D. | 2.23 | 2.91 | 3.04 | 2.96 | 2.49 | 2.29 | 2.22 | 1.76 | 1.65 | 2.78 | 1.99 | 2.54 | 0.95 | |||||||||||||
SKEW | -0.36 | -0.27 | -0.01 | 0.09 | 0.01 | -0.06 | -1.78 | -0.22 | -0.10 | -0.24 | 0.05 | 0.01 | 0.33 | |||||||||||||
MAX | 40.10 | 45.70 | 49.32 | 57.73 | 63.28 | 70.63 | 73.77 | 72.52 | 66.29 | 58.76 | 47.00 | 42.94 | 54.23 | |||||||||||||
MIN | 31.65 | 32.79 | 38.35 | 43.78 | 52.32 | 60.98 | 62.24 | 64.35 | 59.24 | 47.69 | 39.35 | 31.10 | 50.80 | |||||||||||||
YRS | 31 | 31 | 32 | 32 | 30 | 32 | 32 | 31 | 31 | 28 | 29 | 29 | 23 |