YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1911 | ----- | z | ----- | z | 38.32 | 43.83 | a | 50.68 | 62.80 | 70.87 | a | 70.87 | 60.90 | 48.26 | 35.96 | b | 25.86 | b | 50.83 | b | ||||||
1912 | 27.13 | a | 32.33 | b | 35.61 | 41.97 | 50.87 | a | 63.57 | 68.23 | 68.61 | 54.11 | c | 46.39 | 39.28 | a | 29.10 | 46.43 | ||||||||
1913 | ----- | z | 27.07 | a | 32.06 | 43.63 | 53.84 | 62.36 | b | 68.59 | b | 71.68 | 62.40 | 46.03 | 40.77 | 27.68 | 48.74 | a | ||||||||
1914 | 27.65 | 29.75 | 39.32 | ----- | z | 56.87 | a | 59.03 | 70.87 | 72.84 | 58.83 | 50.87 | 40.77 | 27.29 | 48.55 | a | ||||||||||
1915 | 25.33 | a | 31.25 | 38.97 | 51.23 | 50.84 | 58.73 | 68.94 | 71.63 | a | 57.90 | 51.19 | 38.70 | 30.97 | b | 47.97 | ||||||||||
1916 | 22.73 | a | 25.69 | 29.94 | 38.20 | 47.23 | 58.70 | 69.90 | 71.20 | a | 62.47 | 44.90 | 32.38 | a | 25.43 | a | 44.06 | |||||||||
1917 | 17.94 | 24.68 | 28.19 | 40.57 | 50.03 | a | 61.17 | 74.94 | 72.13 | 62.31 | a | 48.77 | 31.87 | 26.58 | 44.93 | |||||||||||
1918 | 20.81 | 26.25 | 38.52 | b | 43.28 | a | 50.61 | 69.40 | 70.90 | 67.65 | 63.70 | 54.10 | 37.41 | a | 28.13 | 47.56 | ||||||||||
1919 | 24.58 | 30.50 | 37.23 | 47.63 | 57.93 | a | 65.59 | a | ----- | z | 73.11 | d | 62.53 | 41.33 | a | 32.23 | 18.42 | 44.64 | a | |||||||
1920 | 22.23 | 28.72 | 32.26 | 34.32 | e | 50.77 | 61.41 | a | 72.71 | 71.26 | 60.59 | a | 44.71 | 36.55 | a | 28.58 | 45.34 | |||||||||
1921 | 26.84 | 28.61 | 37.00 | 40.17 | a | 53.29 | 65.03 | 68.45 | 61.10 | 52.93 | 51.39 | 34.50 | 26.39 | 45.47 | ||||||||||||
1922 | 16.77 | 23.07 | ----- | z | 37.64 | e | 51.65 | 58.53 | 74.34 | b | 75.92 | e | 67.20 | 48.39 | 36.24 | a | 30.65 | 47.31 | a | |||||||
1923 | 30.97 | 23.54 | 33.70 | a | 44.48 | a | 54.87 | 60.27 | 75.13 | 72.50 | a | 63.04 | b | 45.52 | j | 39.73 | d | 27.27 | a | 47.77 | a | |||||
1924 | 23.29 | 33.14 | 33.29 | 44.13 | 58.48 | 64.47 | 72.55 | 71.26 | 61.37 | 48.68 | 37.77 | 22.83 | b | 47.60 | ||||||||||||
1925 | 24.06 | 33.50 | 39.26 | 47.60 | 59.06 | 61.87 | 75.35 | 70.29 | 60.38 | a | 49.29 | 35.57 | 34.34 | b | 49.22 | |||||||||||
1926 | 28.39 | c | 33.77 | b | 39.13 | 52.07 | 57.22 | d | 67.96 | c | 73.33 | a | 71.52 | 57.89 | b | 51.23 | 42.77 | 29.27 | a | 50.38 | ||||||
1927 | 26.90 | 31.57 | 36.23 | 42.03 | 50.81 | 62.73 | 72.32 | 69.19 | 58.69 | a | 51.03 | b | 42.93 | a | 27.97 | b | 47.70 | |||||||||
1928 | 25.84 | 30.52 | 39.61 | 42.20 | 59.45 | 58.64 | b | 71.10 | 68.70 | a | 61.48 | a | 52.50 | q | 37.60 | 23.90 | 47.19 | a | ||||||||
1929 | 21.09 | t | 26.60 | r | 34.58 | 40.50 | 52.97 | a | 59.79 | a | 74.11 | c | ----- | z | 61.27 | 55.34 | b | ----- | z | ----- | z | 54.08 | e | |||
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 | ----- | z | ----- | z | ----- | z |
1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1963 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1964 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1965 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1966 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1967 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1968 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 25.59 | n | ----- | z |
1969 | 26.22 | d | 28.57 | 32.97 | b | 42.43 | 56.25 | c | 60.87 | 69.42 | 73.87 | 63.57 | 44.00 | 34.80 | 28.65 | 46.80 | ||||||||||
1970 | 28.33 | a | 32.64 | 35.97 | a | 37.90 | 51.10 | a | 62.23 | 70.55 | 73.23 | 55.43 | 44.00 | a | 38.00 | 27.77 | 46.43 | |||||||||
1971 | 25.71 | c | 29.35 | b | 33.87 | 43.03 | 51.87 | 62.79 | b | 72.42 | 72.56 | d | 56.04 | c | 44.70 | a | 33.00 | 24.25 | c | 45.80 | ||||||
1972 | 26.00 | e | 28.00 | a | 36.71 | 43.70 | 56.19 | 65.70 | 71.72 | b | 71.87 | 59.20 | 52.60 | p | 36.82 | b | 19.60 | a | 46.87 | a | ||||||
1973 | 20.65 | 27.14 | 36.00 | a | 41.25 | b | 53.74 | 63.10 | 69.94 | 70.97 | b | 58.23 | 50.77 | a | ----- | z | 31.00 | 47.53 | a | |||||||
1974 | 22.90 | ----- | z | 38.00 | o | 42.87 | 54.43 | a | 63.81 | i | 72.23 | 69.93 | a | 61.63 | 53.27 | i | 41.23 | 30.45 | 49.46 | d | ||||||
1975 | 22.06 | 29.00 | b | 32.92 | s | 40.12 | v | 46.56 | d | 55.93 | a | 71.00 | f | 67.71 | 59.97 | a | 52.06 | o | 27.60 | t | 22.56 | d | 43.40 | e | ||
1976 | 21.61 | 27.10 | 29.56 | d | 41.87 | 54.62 | b | 59.27 | 72.33 | m | 66.50 | i | 61.30 | ----- | z | 37.20 | 24.06 | 39.62 | c | |||||||
1977 | 22.26 | 28.30 | a | 31.17 | a | 46.80 | 49.30 | a | 66.87 | 69.97 | 69.43 | c | 58.89 | l | 52.11 | c | ----- | z | 33.48 | 46.97 | b | |||||
1978 | 32.03 | 33.12 | b | 39.65 | 43.00 | 48.77 | 60.77 | d | 69.97 | 66.19 | 52.70 | 48.00 | 42.03 | 30.06 | 47.19 | |||||||||||
1979 | 25.42 | 28.86 | 38.04 | c | 43.43 | p | ----- | z | 59.83 | 72.74 | 70.05 | i | 64.71 | f | 51.10 | 32.13 | 22.90 | k | 44.02 | e | ||||||
1980 | 25.40 | a | 30.56 | d | 35.19 | e | 45.73 | 51.04 | h | 60.82 | b | 69.58 | 68.04 | e | 62.61 | l | 50.00 | 39.25 | f | 30.62 | o | 48.17 | d | |||
1981 | 28.11 | l | 31.54 | 37.10 | 43.90 | a | 48.31 | b | 64.96 | g | ----- | z | 75.54 | c | ----- | z | ----- | z | ----- | z | ----- | z | 47.28 | g | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 24.65 | 29.25 | 35.50 | 43.03 | 52.95 | 62.01 | 71.47 | 70.72 | 59.93 | 48.66 | 37.24 | 27.23 | 46.86 | |||||||||||||
S.D. | 3.50 | 2.93 | 3.28 | 3.78 | 3.57 | 3.09 | 2.10 | 2.94 | 3.40 | 3.45 | 3.35 | 3.72 | 1.65 | |||||||||||||
SKEW | -0.15 | -0.33 | -0.56 | 0.29 | 0.19 | 0.50 | 0.29 | -1.06 | -0.48 | -0.21 | -0.01 | -0.43 | 0.37 | |||||||||||||
MAX | 32.03 | 33.77 | 39.65 | 52.07 | 59.45 | 69.40 | 75.35 | 75.92 | 67.20 | 55.34 | 42.93 | 34.34 | 50.38 | |||||||||||||
MIN | 16.77 | 23.07 | 28.19 | 34.32 | 46.56 | 55.93 | 68.23 | 61.10 | 52.70 | 41.33 | 31.87 | 18.42 | 44.06 | |||||||||||||
YRS | 28 | 29 | 29 | 29 | 30 | 30 | 28 | 29 | 28 | 25 | 26 | 28 | 15 |