YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1899 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1900 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1901 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1902 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1903 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1904 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1905 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1906 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | 35.39 | 35.61 | 45.10 | 54.28 | a | 64.87 | 73.10 | 75.42 | 76.97 | 72.93 | a | 59.58 | 54.63 | 32.23 | 56.67 | |||||||||||
1915 | 33.50 | a | 40.14 | 41.32 | 58.30 | 60.29 | 70.53 | 79.29 | 77.50 | a | 68.69 | a | 61.42 | 44.70 | 36.55 | 56.02 | ||||||||||
1916 | 34.00 | 40.79 | 47.55 | 54.28 | a | 61.63 | d | 74.97 | a | 78.87 | 74.04 | c | 69.68 | b | 57.16 | 44.13 | 29.68 | 55.56 | ||||||||
1917 | 29.87 | 35.39 | 37.00 | 48.20 | 55.26 | 72.50 | 81.61 | ----- | z | 70.13 | o | 60.07 | d | 51.80 | 40.58 | 51.23 | b | |||||||||
1918 | 28.16 | 37.46 | 47.77 | 49.33 | 64.37 | a | 78.77 | 77.65 | 77.58 | 68.07 | b | 58.71 | 39.63 | 33.35 | 55.07 | |||||||||||
1919 | 34.13 | 33.43 | 43.67 | a | 56.07 | 67.28 | b | 74.19 | i | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 46.91 | g | |||
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 | 77.48 | e | 83.48 | 80.48 | 69.24 | a | 64.26 | 45.45 | a | 36.77 | 65.31 | e | ||||
1935 | 39.55 | 40.29 | 43.19 | 50.43 | 57.55 | 74.60 | 80.87 | 78.16 | 71.70 | 58.68 | 44.07 | 37.35 | 56.37 | |||||||||||||
1936 | 31.68 | 34.21 | a | 44.68 | 55.70 | 69.23 | 77.37 | 81.97 | 77.19 | 70.20 | 59.54 | e | 43.90 | 37.55 | 56.93 | |||||||||||
1937 | 26.90 | 35.19 | a | 42.20 | a | 52.03 | 67.26 | 72.50 | 76.84 | 79.48 | 72.73 | 59.39 | 44.87 | 37.84 | 55.60 | |||||||||||
1938 | 35.97 | 37.75 | 42.62 | b | 53.53 | 59.48 | 73.03 | 77.81 | 78.55 | 70.67 | 60.77 | 41.00 | 36.52 | 55.64 | ||||||||||||
1939 | 33.23 | 26.93 | 44.45 | 57.70 | 68.13 | a | 73.60 | 84.19 | 80.30 | a | 72.23 | 59.16 | 51.40 | 44.00 | 57.94 | |||||||||||
1940 | 32.06 | 36.76 | 45.06 | 54.00 | c | 66.84 | 77.23 | 82.90 | 78.81 | 69.20 | 55.00 | c | 34.97 | 38.29 | 55.93 | |||||||||||
1941 | 34.68 | 40.71 | 41.94 | 47.47 | 63.23 | 68.63 | 77.71 | 76.90 | 68.30 | 55.77 | 45.00 | 38.10 | 54.87 | |||||||||||||
1942 | 32.81 | 30.46 | 38.65 | 54.42 | f | 67.17 | g | 74.40 | 80.42 | 80.74 | 73.21 | b | 70.04 | c | 41.85 | q | 38.86 | i | 60.09 | d | ||||||
1943 | 33.07 | a | 42.25 | 45.90 | 65.43 | 65.94 | 75.10 | 81.10 | 77.13 | 73.00 | h | 59.45 | 47.03 | 37.50 | a | 57.26 | a | |||||||||
1944 | 33.55 | 35.59 | 39.06 | 48.20 | 62.30 | a | 73.13 | 78.84 | 80.13 | 75.20 | 61.90 | 45.10 | 37.35 | 55.86 | ||||||||||||
1945 | 37.45 | 39.07 | 43.23 | 47.43 | 64.55 | 69.48 | a | 80.29 | 76.00 | 69.93 | 61.45 | 48.03 | 33.65 | 55.88 | ||||||||||||
1946 | 34.97 | 41.36 | 48.13 | 61.17 | a | 61.47 | a | 76.77 | 80.94 | 79.00 | 74.93 | 57.82 | c | 47.70 | 43.17 | a | 58.95 | |||||||||
1947 | 33.29 | 40.57 | 43.19 | 51.97 | a | 65.84 | 68.63 | 80.03 | 77.74 | 73.60 | 64.29 | 39.13 | 36.16 | 56.20 | ||||||||||||
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 77.71 | 76.67 | 61.55 | 37.48 | a | 35.97 | 57.88 | g | ||||
1949 | 29.53 | a | 35.54 | 44.45 | 56.07 | 62.50 | a | 69.03 | 77.16 | 75.84 | 69.93 | 57.75 | g | 53.33 | 34.90 | 55.30 | a | |||||||||
1950 | 35.08 | g | 38.46 | 39.74 | 52.80 | 60.35 | 75.37 | 76.38 | b | 74.67 | a | 67.00 | a | 66.10 | a | 49.43 | 40.71 | 58.27 | a | |||||||
1951 | 32.71 | 38.25 | 40.90 | 50.47 | 63.35 | 68.30 | 80.23 | 74.93 | a | 71.30 | 55.83 | a | 42.41 | a | 31.26 | 54.16 | ||||||||||
1952 | 33.90 | b | 33.59 | 37.00 | b | 54.00 | a | 61.97 | 75.61 | b | 77.55 | 74.73 | a | 71.82 | b | 64.68 | 40.57 | 33.87 | a | 54.94 | ||||||
1953 | 39.10 | 36.04 | 43.29 | 48.75 | b | 58.35 | 76.20 | 79.48 | 76.74 | 74.37 | 61.10 | 47.60 | 35.10 | 56.34 | ||||||||||||
1954 | 42.48 | 44.71 | 40.58 | 59.03 | 66.06 | 76.03 | 81.35 | 78.29 | 69.23 | 60.48 | 49.63 | 35.58 | 58.62 | |||||||||||||
1955 | 32.06 | 31.93 | 41.06 | 51.60 | 62.10 | 70.00 | 80.48 | 78.32 | 73.77 | 61.93 | b | 40.50 | d | 37.94 | 55.14 | |||||||||||
1956 | 38.68 | 32.97 | 44.53 | a | 52.30 | 66.48 | 76.80 | 78.20 | a | 75.70 | a | 75.07 | a | 62.35 | 37.90 | 33.90 | 56.24 | |||||||||
1957 | 30.57 | a | 42.18 | 41.84 | 47.20 | 57.07 | a | 69.27 | 76.00 | 76.27 | a | 69.07 | 57.13 | 37.63 | 37.23 | 53.45 | ||||||||||
1958 | 33.52 | 40.14 | 39.10 | 47.50 | 66.50 | a | 75.10 | 78.30 | a | 81.23 | 71.57 | 61.35 | 46.60 | 43.58 | 57.04 | |||||||||||
1959 | 40.19 | ----- | z | 48.87 | 55.73 | 64.73 | a | 76.90 | 80.10 | a | 76.74 | 67.97 | a | 56.55 | 47.93 | 42.39 | 59.83 | a | ||||||||
1960 | 35.03 | a | 32.38 | 45.60 | a | 58.37 | 64.71 | 76.50 | 81.62 | b | 80.52 | 73.10 | 59.19 | 47.43 | 38.06 | 57.71 | ||||||||||
1961 | 38.13 | 40.29 | 45.16 | 50.87 | 65.97 | a | 76.47 | 79.74 | 78.55 | 62.41 | a | 59.00 | 42.67 | 32.40 | a | 55.97 | ||||||||||
1962 | 32.65 | 42.11 | 42.16 | 58.86 | a | 63.35 | 73.17 | 77.77 | 78.29 | 70.60 | 61.94 | 47.37 | 37.65 | 57.16 | ||||||||||||
1963 | 29.26 | 40.32 | 41.52 | 53.63 | 65.71 | 72.77 | 82.90 | 75.03 | 74.17 | 66.10 | 47.33 | 34.42 | 56.93 | |||||||||||||
1964 | 28.84 | 30.07 | 36.06 | 49.67 | 64.00 | 71.93 | 82.58 | 74.71 | 69.23 | 63.23 | 41.97 | 32.35 | 53.72 | |||||||||||||
1965 | 33.71 | 36.11 | 35.30 | a | 52.63 | 61.94 | 70.33 | 77.35 | 74.00 | 62.13 | 64.23 | 46.20 | 36.84 | 54.23 | ||||||||||||
1966 | 31.23 | ----- | z | 47.42 | 55.63 | 66.90 | 73.83 | a | 81.58 | 78.71 | 72.67 | 58.77 | a | 49.03 | a | 31.26 | 58.82 | a | ||||||||
1967 | 33.03 | 37.54 | 48.74 | 55.14 | a | 59.94 | 69.13 | 79.61 | 78.06 | 71.23 | 61.81 | 47.00 | 30.47 | a | 55.98 | |||||||||||
1968 | 34.10 | 37.48 | 44.06 | 47.13 | 61.23 | 75.50 | 78.77 | 72.16 | 67.73 | 61.26 | 38.80 | 31.71 | 54.16 | |||||||||||||
1969 | 37.77 | 36.81 | a | 38.94 | 57.67 | 68.17 | b | 68.23 | 80.35 | 81.77 | 69.87 | 48.93 | a | 42.10 | 35.52 | 55.51 | ||||||||||
1970 | 31.94 | 41.50 | 39.71 | 46.33 | 65.32 | 72.86 | a | 79.90 | 80.16 | 66.67 | 51.94 | 42.40 | 34.42 | 54.43 | ||||||||||||
1971 | 33.06 | 34.75 | 42.19 | 54.17 | 60.77 | 75.60 | 80.68 | 80.40 | a | 68.03 | 58.19 | 42.27 | 28.55 | 54.89 | ||||||||||||
1972 | 32.45 | 39.28 | 49.06 | ----- | z | 64.71 | 75.07 | 80.84 | 77.80 | a | 67.97 | 55.79 | b | 36.40 | 28.97 | 55.30 | a | |||||||||
1973 | 30.16 | 37.61 | 42.20 | a | 46.20 | 62.84 | 71.53 | 76.45 | 77.48 | 68.23 | 61.97 | a | 46.93 | 32.29 | 54.49 | |||||||||||
1974 | 28.00 | 35.71 | 47.58 | 51.30 | 69.23 | a | 76.27 | 79.21 | b | 76.61 | 69.97 | 60.26 | 42.87 | 29.35 | 55.53 | |||||||||||
1975 | 32.03 | 34.21 | 40.71 | 48.27 | 59.77 | 70.40 | 79.71 | c | 78.53 | a | 71.03 | 63.26 | 43.27 | 36.43 | a | 54.80 | ||||||||||
1976 | 32.61 | 41.93 | a | 41.81 | 55.40 | 63.61 | 75.33 | 82.19 | 76.52 | 69.85 | c | 58.50 | a | 47.60 | 38.65 | 57.00 | ||||||||||
1977 | 32.40 | a | 40.79 | 42.00 | a | 58.60 | 65.71 | 80.52 | a | 80.42 | 78.58 | 73.12 | f | 61.48 | b | 45.45 | a | 36.42 | e | 56.58 | a | |||||
1978 | 37.75 | o | 35.00 | l | ----- | z | ----- | z | ----- | z | 79.50 | h | 83.23 | 79.94 | 72.17 | 62.72 | b | 46.55 | a | 26.13 | 61.79 | f | ||||
1979 | 24.90 | 32.96 | 43.13 | h | 52.86 | b | 62.07 | b | 74.03 | a | 82.42 | ----- | z | 75.23 | 61.94 | 36.21 | a | ----- | z | 55.85 | c | |||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 33.30 | 37.23 | 42.84 | 53.06 | 63.56 | 73.67 | 79.86 | 77.67 | 70.64 | 60.28 | 44.47 | 35.53 | 55.84 | |||||||||||||
S.D. | 3.51 | 3.78 | 3.43 | 4.35 | 3.23 | 3.06 | 2.11 | 2.11 | 3.03 | 3.59 | 4.50 | 3.96 | 1.29 | |||||||||||||
SKEW | 0.28 | -0.42 | -0.07 | 0.40 | -0.41 | -0.19 | -0.09 | -0.27 | -0.49 | -0.41 | -0.09 | -0.02 | 0.38 | |||||||||||||
MAX | 42.48 | 44.71 | 49.06 | 65.43 | 69.23 | 80.52 | 84.19 | 81.77 | 76.67 | 70.04 | 54.63 | 44.00 | 58.95 | |||||||||||||
MIN | 24.90 | 26.93 | 35.30 | 46.20 | 55.26 | 68.23 | 75.42 | 72.16 | 62.13 | 48.93 | 34.97 | 26.13 | 53.45 | |||||||||||||
YRS | 48 | 47 | 48 | 47 | 48 | 49 | 50 | 49 | 48 | 50 | 50 | 49 | 38 |