YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
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 | 81.53 | 74.92 | 63.61 | 49.55 | 43.85 | 62.69 | g | |||||
1933 | 40.84 | 42.57 | 54.76 | 56.42 | 63.47 | 73.52 | 78.15 | 77.98 | 76.60 | a | 68.03 | 53.23 | 48.05 | 61.13 | ||||||||||||
1934 | 48.13 | 50.68 | 55.21 | 62.22 | 68.02 | 78.12 | 83.35 | 81.29 | 76.28 | 65.13 | 57.57 | 51.81 | 64.82 | |||||||||||||
1935 | 48.27 | 47.52 | 53.55 | 62.12 | 63.35 | 76.34 | a | 81.48 | 76.24 | 67.52 | 60.98 | 48.03 | 43.53 | a | 60.75 | |||||||||||
1936 | 41.79 | 45.71 | 52.31 | 60.17 | 69.82 | 78.12 | 80.94 | 79.22 | a | 72.03 | a | 62.34 | 49.85 | 43.89 | 61.35 | |||||||||||
1937 | 40.06 | 46.65 | a | 49.18 | 59.77 | 69.32 | 76.20 | 82.23 | 80.90 | 74.37 | 63.61 | 51.55 | 44.62 | a | 61.54 | |||||||||||
1938 | 44.40 | b | 48.41 | 53.02 | 59.32 | 66.95 | 78.25 | 76.87 | 77.13 | 70.53 | 63.52 | 46.10 | 44.03 | a | 60.71 | |||||||||||
1939 | 41.16 | 38.93 | 52.08 | 60.47 | 68.69 | 78.42 | 79.77 | 77.63 | 74.05 | 60.97 | 51.73 | 47.53 | 60.95 | |||||||||||||
1940 | 43.50 | 47.41 | 54.85 | 59.95 | 69.60 | 77.00 | 80.87 | 77.66 | 74.25 | 63.23 | 48.68 | 48.23 | 62.10 | |||||||||||||
1941 | 44.55 | a | 49.80 | 50.56 | 55.40 | a | 67.81 | 74.60 | 79.27 | 76.18 | 72.12 | 61.27 | 50.92 | 45.92 | g | 62.04 | a | |||||||||
1942 | 44.27 | 44.45 | 49.68 | 58.62 | b | 66.63 | 76.53 | 81.66 | 77.26 | 72.22 | 61.06 | 54.27 | 45.28 | a | 60.99 | |||||||||||
1943 | 43.90 | b | 48.83 | d | 54.24 | 62.17 | 66.58 | 76.79 | a | 78.38 | g | 79.02 | 71.08 | 62.03 | ----- | z | 41.23 | 60.59 | b | |||||||
1944 | 34.79 | 44.81 | 48.84 | 51.77 | 64.47 | 77.42 | 80.52 | a | 77.55 | 73.43 | 65.02 | 49.57 | 42.47 | 59.22 | ||||||||||||
1945 | 40.47 | 47.41 | 49.45 | 55.82 | 67.69 | 72.27 | 82.24 | 79.92 | 75.83 | 61.34 | 53.47 | 44.79 | q | 62.36 | a | |||||||||||
1946 | 43.18 | a | 45.79 | 54.40 | a | 63.90 | 67.05 | c | 80.80 | 80.41 | t | 79.08 | 76.55 | 64.81 | ----- | z | 49.71 | 62.53 | b | |||||||
1947 | 39.61 | 51.48 | 53.97 | ----- | z | 75.69 | 78.43 | a | 83.22 | a | 82.02 | c | 73.60 | 61.48 | 48.17 | 44.18 | 62.90 | a | ||||||||
1948 | 44.48 | h | 47.86 | 49.96 | r | 63.00 | p | 66.26 | 79.95 | 82.95 | j | 81.05 | t | 74.54 | b | 66.00 | ----- | z | ----- | z | 66.92 | g | ||||
1949 | ----- | z | 53.06 | t | 53.44 | f | 59.95 | a | 67.63 | a | 78.07 | 80.10 | e | 76.83 | e | 72.88 | 58.44 | 51.02 | 41.23 | 65.13 | c | |||||
1950 | 43.33 | h | 47.54 | d | 53.28 | d | 58.65 | c | 63.02 | f | 74.93 | 78.61 | m | 76.94 | d | 67.60 | ----- | z | 50.47 | 45.97 | 59.42 | d | ||||
1951 | 41.18 | ----- | z | 53.75 | u | ----- | z | 68.42 | a | 76.69 | i | 84.84 | 78.03 | 72.34 | a | 63.58 | 49.60 | 44.63 | 62.83 | d | ||||||
1952 | 45.23 | 44.76 | 48.19 | 56.02 | a | 68.24 | l | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 48.55 | h | |||
1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1954 | 46.73 | p | 50.07 | ----- | z | ----- | z | 68.31 | 77.05 | a | 81.47 | 75.90 | a | 74.73 | 65.00 | 51.71 | a | 43.79 | 65.34 | c | ||||||
1955 | 39.63 | 40.12 | 52.42 | a | 58.23 | 65.74 | 75.15 | 78.05 | 76.69 | 72.67 | 65.03 | 50.14 | a | 45.60 | a | 59.96 | ||||||||||
1956 | 46.90 | a | 42.45 | 53.78 | a | 58.15 | 70.24 | 80.70 | 78.95 | 76.05 | 74.77 | 62.74 | 46.28 | 41.68 | 61.06 | |||||||||||
1957 | 46.61 | 54.70 | f | 51.82 | l | 58.27 | h | 65.26 | j | 73.59 | n | 81.10 | j | 76.73 | i | 67.25 | r | 58.84 | i | 44.56 | l | 43.33 | k | 46.61 | k | |
1958 | 42.77 | i | 46.79 | k | 47.00 | j | 59.02 | i | 70.75 | m | 81.10 | i | 81.07 | i | 78.12 | k | 73.06 | m | ----- | z | ----- | z | ----- | z | ----- | z |
1959 | 45.94 | o | 44.95 | g | 51.96 | g | 61.69 | d | 66.77 | g | 75.81 | n | 81.27 | g | 76.00 | i | 72.36 | l | 62.95 | j | 50.11 | g | 44.73 | g | 61.69 | k |
1960 | 39.36 | f | 44.24 | f | 56.34 | i | 59.70 | g | 66.44 | m | 80.10 | f | 80.40 | g | 79.79 | j | 74.95 | j | 61.22 | f | 52.93 | g | 41.02 | j | ----- | z |
1961 | 43.18 | n | 46.89 | j | 53.47 | l | 60.52 | i | 68.71 | s | 80.28 | j | 81.07 | j | 77.32 | i | 71.28 | g | 61.29 | e | 47.54 | e | 44.52 | h | 54.41 | j |
1962 | 41.62 | b | 47.57 | e | 49.21 | b | 63.41 | b | 65.81 | g | 73.54 | e | 79.17 | e | 79.58 | e | 74.44 | f | 64.07 | c | 54.63 | c | 46.46 | f | 61.42 | c |
1963 | 43.37 | d | 49.60 | b | 52.70 | f | 59.33 | j | 70.44 | d | 78.14 | b | 82.04 | c | 75.08 | 73.20 | h | 64.29 | b | 52.23 | j | 41.89 | i | 66.14 | e | |
1964 | 39.89 | c | 39.88 | d | 49.55 | b | 57.35 | c | 68.38 | e | 75.73 | f | 80.71 | b | 77.45 | a | 70.87 | d | 62.76 | d | 48.24 | k | 44.19 | e | 59.10 | b |
1965 | 45.57 | d | 43.90 | b | 49.50 | f | 61.23 | h | 65.79 | b | 72.58 | e | 79.72 | f | 78.08 | e | 70.20 | e | 61.94 | f | 55.00 | h | 45.80 | f | 62.69 | f |
1966 | 38.87 | h | 41.00 | e | 52.08 | f | 59.65 | f | 68.79 | g | 76.22 | e | 80.96 | h | 77.85 | h | 71.19 | f | 60.60 | e | 54.36 | i | 44.30 | f | 59.27 | i |
1967 | 43.12 | s | 49.39 | f | 56.88 | e | 59.46 | e | 67.14 | f | 78.03 | n | 79.78 | f | 77.06 | e | 70.61 | h | 61.78 | h | 52.42 | f | 42.40 | j | 64.47 | i |
1968 | 44.22 | f | 51.12 | e | 52.46 | f | 57.17 | d | 65.48 | f | 76.07 | h | 78.29 | g | 74.07 | h | 70.74 | g | 62.38 | e | 50.54 | g | 41.10 | g | 56.89 | i |
1969 | 47.87 | e | 47.50 | f | 47.72 | f | 61.10 | e | 67.36 | f | 74.75 | f | 80.54 | g | 80.86 | f | 72.43 | g | 62.79 | e | 49.53 | l | 44.84 | i | 57.25 | i |
1970 | 42.24 | h | 49.48 | e | 50.79 | g | 56.98 | f | 68.75 | g | 77.17 | g | 80.98 | h | 77.69 | e | 71.58 | f | 58.28 | f | 51.08 | j | 45.26 | h | 63.59 | j |
1971 | 43.73 | i | 46.79 | i | 53.74 | f | 58.20 | e | 66.88 | g | 76.63 | g | 82.12 | f | 76.52 | e | 73.00 | e | 59.05 | i | 50.98 | e | 43.61 | i | 64.67 | h |
1972 | 43.65 | g | 46.48 | f | 58.15 | d | 60.06 | m | 65.38 | f | 75.33 | d | 80.90 | g | 77.43 | d | 71.64 | e | 63.91 | h | 46.96 | f | 43.67 | h | 70.64 | h |
1973 | 39.80 | h | 45.97 | i | 48.21 | e | 53.26 | g | 67.25 | g | 76.14 | e | 80.10 | f | 76.59 | i | 73.60 | f | 61.74 | f | 51.00 | i | 42.86 | i | 62.18 | j |
1974 | 43.58 | g | 44.68 | f | 55.86 | f | 61.04 | g | 68.62 | f | 81.54 | e | 78.28 | f | 75.85 | d | 70.65 | g | 61.10 | e | 51.21 | f | 40.50 | h | 72.83 | i |
1975 | 43.23 | g | 46.69 | g | 51.92 | f | 54.88 | e | 63.21 | g | 74.87 | g | 78.58 | f | 78.66 | f | 69.86 | h | 61.74 | f | 50.67 | f | 45.02 | f | 54.88 | k |
1976 | 42.52 | g | ----- | z | 52.12 | f | 57.76 | g | 67.23 | g | 76.25 | d | 78.60 | f | 77.94 | f | 71.06 | e | 57.72 | h | 48.07 | g | 41.09 | h | 73.66 | j |
1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 78.90 | g | 78.19 | 71.95 | j | 62.75 | s | 50.71 | p | 46.11 | l | 78.19 | k | |
1978 | 45.33 | h | 45.67 | g | 57.37 | p | 58.13 | g | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 43.07 | 46.28 | 52.32 | 58.98 | 67.77 | 76.84 | 80.76 | 77.94 | 72.92 | 62.95 | 50.65 | 45.02 | 61.21 | |||||||||||||
S.D. | 3.26 | 3.56 | 2.82 | 2.83 | 2.56 | 2.34 | 1.95 | 1.75 | 2.37 | 1.98 | 2.74 | 2.74 | 1.35 | |||||||||||||
SKEW | -0.30 | -0.52 | 0.12 | -0.41 | 0.87 | -0.00 | -0.00 | 0.78 | -0.49 | 0.26 | 0.52 | 0.79 | 1.44 | |||||||||||||
MAX | 48.27 | 51.48 | 58.15 | 63.90 | 75.69 | 81.54 | 84.84 | 82.02 | 76.60 | 68.03 | 57.57 | 51.81 | 64.82 | |||||||||||||
MIN | 34.79 | 38.93 | 48.19 | 51.77 | 63.35 | 72.27 | 76.87 | 75.08 | 67.52 | 58.44 | 46.10 | 41.23 | 59.22 | |||||||||||||
YRS | 25 | 28 | 24 | 27 | 24 | 29 | 21 | 32 | 28 | 30 | 23 | 21 | 12 |