YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1912 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 43.29 | j | 31.20 | 26.13 | 28.66 | j | ||
1913 | 23.90 | 32.43 | 33.19 | 39.18 | b | 44.90 | 49.55 | s | 65.32 | ----- | z | ----- | z | 40.30 | h | 42.17 | 30.55 | 38.96 | d | |||||||
1914 | 30.71 | 30.82 | 36.48 | 43.73 | 48.84 | 59.53 | ----- | z | ----- | z | 57.82 | s | 48.90 | 39.31 | a | 33.22 | h | 42.29 | d | |||||||
1915 | 28.32 | c | 33.54 | 33.96 | c | 41.70 | 44.68 | 53.20 | 63.66 | b | 64.57 | x | 54.00 | p | 40.35 | 31.90 | 28.13 | 39.94 | b | |||||||
1916 | 35.68 | 36.24 | 39.32 | 40.50 | 41.11 | d | 51.10 | 65.32 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 44.18 | e | |||||
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 | 36.60 | f | 39.54 | 38.26 | 40.13 | 49.10 | 52.73 | 68.93 | c | 78.26 | 69.43 | 56.90 | a | 39.12 | d | 31.77 | 51.29 | a | ||||||||
1942 | 29.61 | 28.68 | 31.45 | 39.67 | 42.68 | 50.47 | 65.77 | 65.70 | a | 55.53 | 44.52 | 30.23 | 25.65 | 42.50 | ||||||||||||
1943 | 26.84 | 29.59 | a | 34.71 | 39.87 | 43.97 | a | 53.00 | a | 63.32 | 67.36 | f | 61.47 | 44.06 | 28.80 | 30.03 | 41.42 | a | ||||||||
1944 | 24.23 | 31.14 | 33.10 | 38.27 | 47.42 | 52.03 | 65.16 | 67.32 | 59.23 | 48.97 | 36.07 | 26.68 | 44.13 | |||||||||||||
1945 | 27.84 | 28.75 | 34.23 | a | 35.93 | 44.45 | 49.63 | 68.77 | 69.03 | 56.50 | 47.68 | 26.27 | 25.19 | 42.86 | ||||||||||||
1946 | 28.29 | 22.29 | 33.42 | 46.03 | 45.68 | 56.70 | 68.58 | 68.20 | a | 61.43 | 40.65 | 32.57 | 29.93 | a | 44.48 | |||||||||||
1947 | 26.00 | 29.74 | a | 35.39 | 39.23 | 53.48 | 56.10 | 66.03 | 68.59 | b | 59.20 | 47.26 | 28.73 | 26.23 | 44.67 | |||||||||||
1948 | 23.06 | 29.89 | a | 33.48 | 41.73 | 48.42 | 56.67 | 66.00 | a | 66.90 | 59.83 | 49.42 | 26.87 | 29.39 | 44.31 | |||||||||||
1949 | 29.29 | 27.14 | 32.81 | 43.40 | 44.52 | 57.03 | 66.81 | 60.74 | 60.80 | 41.90 | 30.53 | 27.68 | 43.55 | |||||||||||||
1950 | 26.68 | 32.46 | 34.79 | b | 40.33 | 43.55 | 54.17 | 68.97 | 61.71 | 52.97 | 46.00 | 30.47 | 23.84 | 42.99 | ||||||||||||
1951 | 23.97 | 29.25 | 32.68 | 39.90 | 47.87 | 55.20 | 69.32 | 68.71 | 56.63 | 48.06 | 35.50 | 31.35 | 44.87 | |||||||||||||
1952 | 31.03 | 29.41 | 32.29 | 44.10 | 49.06 | 55.00 | 67.00 | h | 67.90 | 58.57 | 43.75 | g | 33.62 | a | 26.78 | d | 42.78 | b | ||||||||
1953 | 25.83 | a | 26.94 | j | 35.16 | 39.87 | 41.35 | 54.30 | 70.13 | 63.94 | 51.50 | 41.61 | 31.45 | a | 17.52 | 42.97 | a | |||||||||
1954 | 23.94 | 30.75 | 35.87 | 39.33 | 46.68 | 56.70 | 70.80 | a | 65.93 | a | 61.60 | 46.42 | 31.96 | b | 25.58 | 44.63 | ||||||||||
1955 | 28.84 | 23.64 | 34.23 | 36.83 | 45.97 | 54.90 | 65.32 | 67.80 | a | 54.77 | 44.48 | 32.33 | 28.29 | 43.12 | ||||||||||||
1956 | 30.17 | a | 28.10 | 31.00 | 40.37 | 45.35 | 59.23 | 64.45 | 60.61 | 55.10 | a | 43.53 | a | 23.77 | 20.65 | 41.86 | ||||||||||
1957 | 34.71 | 40.04 | 38.77 | 39.00 | 46.87 | 58.80 | 68.77 | 66.23 | 52.27 | 48.42 | 30.30 | 26.71 | 45.91 | |||||||||||||
1958 | 21.87 | 32.07 | 36.13 | 40.70 | 50.58 | 59.73 | 65.23 | 67.45 | 60.03 | 46.52 | 29.90 | 18.84 | 44.09 | |||||||||||||
1959 | 22.58 | 26.43 | 28.65 | 41.63 | 44.61 | 61.83 | 70.19 | 68.39 | 56.73 | 46.13 | 36.33 | 33.23 | 44.73 | |||||||||||||
1960 | 26.84 | 28.48 | 36.58 | 39.87 | 45.68 | 58.53 | 66.65 | 66.16 | 59.03 | a | 46.81 | 33.07 | 26.39 | 44.51 | ||||||||||||
1961 | 29.68 | 30.21 | 37.42 | 40.73 | 46.10 | 61.03 | 70.19 | 68.48 | 57.53 | 44.71 | 36.23 | 32.19 | 46.21 | |||||||||||||
1962 | 29.39 | 35.14 | 31.84 | 42.87 | 46.44 | v | 53.67 | 67.48 | 65.16 | 62.67 | 46.26 | 36.33 | 31.61 | 45.67 | a | |||||||||||
1963 | 24.19 | 32.18 | 32.07 | a | 36.57 | 48.39 | 51.70 | 68.97 | 68.29 | 62.30 | 47.52 | 37.17 | 22.87 | 44.35 | ||||||||||||
1964 | 20.55 | 21.76 | 32.94 | 39.53 | 48.10 | 56.23 | 70.19 | 67.45 | 59.23 | d | 48.52 | 32.90 | 29.42 | 43.90 | ||||||||||||
1965 | 32.10 | 30.68 | 34.55 | 41.47 | 43.48 | 52.27 | 70.06 | 65.90 | a | 56.45 | a | 41.71 | 38.27 | 33.43 | a | 45.03 | ||||||||||
1966 | 26.35 | 28.68 | 33.97 | 39.07 | 50.32 | 55.72 | a | 68.60 | a | 66.80 | a | 59.70 | c | 40.10 | a | 34.20 | 24.10 | 43.97 | ||||||||
1967 | 19.57 | a | 27.29 | 34.63 | a | 37.80 | 46.83 | a | 55.90 | a | 66.57 | a | 63.07 | c | 57.70 | 40.58 | 32.70 | c | 25.23 | 42.32 | ||||||
1968 | 25.32 | 38.07 | 38.39 | 40.97 | a | 46.29 | 54.70 | c | 65.84 | 63.52 | 54.13 | 42.94 | 34.37 | 24.13 | 44.05 | |||||||||||
1969 | 34.26 | 32.18 | 30.45 | 41.59 | a | 49.32 | 52.58 | f | 69.08 | e | 70.68 | 62.88 | f | 43.81 | e | 37.03 | a | 30.34 | b | 43.87 | b | |||||
1970 | 26.03 | a | 32.25 | 34.39 | 33.03 | 47.54 | e | ----- | z | ----- | z | ----- | z | 45.17 | r | 38.29 | 30.38 | a | 28.55 | 33.81 | d | |||||
1971 | 23.34 | b | 27.59 | a | 33.44 | d | 40.71 | m | 46.75 | g | ----- | z | ----- | z | 71.68 | 61.76 | a | 51.39 | c | 41.47 | 34.87 | 43.19 | d | |||
1972 | 28.39 | 32.19 | b | 39.93 | b | 41.93 | 49.42 | 60.57 | 67.31 | o | 68.61 | 60.97 | 53.06 | ----- | z | 30.45 | 46.55 | b | ||||||||
1973 | 27.45 | 33.26 | a | 34.52 | ----- | z | 51.16 | ----- | z | 67.63 | a | 65.68 | 53.70 | 39.50 | a | 31.44 | e | 20.87 | h | 44.93 | c | |||||
1974 | 29.34 | b | 25.33 | j | 37.07 | c | 38.97 | a | 46.24 | f | 57.79 | f | 68.26 | 64.74 | 59.60 | 53.79 | l | ----- | z | 24.13 | p | 49.66 | f | |||
1975 | 27.54 | g | 31.96 | c | 35.52 | b | 36.22 | c | 46.00 | a | 54.23 | 68.84 | 62.60 | a | 56.79 | a | 40.06 | m | 27.00 | d | 26.50 | k | 46.57 | c | ||
1976 | 23.30 | d | 31.90 | 35.29 | j | 43.47 | ----- | z | 58.83 | 70.68 | 66.93 | a | 61.53 | 46.93 | d | 34.03 | 23.94 | 46.15 | b | |||||||
1977 | 32.68 | 31.61 | 31.55 | 49.07 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 36.23 | h | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 27.24 | 30.70 | 34.47 | 40.37 | 46.66 | 55.63 | 67.60 | 66.74 | 58.43 | 45.54 | 33.05 | 27.43 | 44.04 | |||||||||||||
S.D. | 3.84 | 3.94 | 2.51 | 2.85 | 2.75 | 3.15 | 2.13 | 3.31 | 3.62 | 4.04 | 4.17 | 3.99 | 1.07 | |||||||||||||
SKEW | 0.21 | 0.14 | 0.20 | 0.37 | 0.14 | 0.12 | -0.27 | 0.85 | 0.39 | 0.44 | 0.14 | -0.43 | -0.15 | |||||||||||||
MAX | 35.68 | 40.04 | 39.93 | 49.07 | 53.48 | 61.83 | 70.80 | 78.26 | 69.43 | 56.90 | 42.17 | 34.87 | 46.21 | |||||||||||||
MIN | 19.57 | 21.76 | 28.65 | 33.03 | 41.11 | 49.63 | 63.32 | 60.61 | 51.50 | 38.29 | 23.77 | 17.52 | 41.86 | |||||||||||||
YRS | 39 | 39 | 40 | 39 | 36 | 34 | 35 | 34 | 34 | 35 | 38 | 36 | 23 |