YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1915 | ----- | z | ----- | z | ----- | z | ----- | z | 56.94 | 67.07 | 72.69 | b | 72.29 | 66.67 | 61.66 | 48.97 | 43.38 | a | 61.21 | d | ||||||
1916 | 39.31 | 48.32 | a | 52.82 | 55.25 | 58.56 | n | 66.02 | h | 72.73 | 70.84 | 65.83 | 53.39 | ----- | z | ----- | z | 57.31 | d | |||||||
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 | 49.44 | 49.44 | k | |
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 | 43.43 | 45.55 | 53.83 | 60.61 | 67.43 | 74.53 | 74.42 | 70.14 | a | 56.08 | 44.97 | 45.24 | b | 57.84 | a | |||||||||
1939 | 43.07 | a | 40.36 | 49.21 | 58.15 | 61.87 | 67.95 | a | 76.16 | 76.11 | 67.45 | 56.71 | 51.08 | 47.53 | 57.97 | |||||||||||
1940 | 46.48 | 45.61 | a | 52.13 | 56.08 | 64.26 | 73.25 | 72.45 | a | 75.92 | 64.52 | 59.31 | 46.25 | 45.15 | 58.45 | |||||||||||
1941 | 43.10 | 46.62 | 48.50 | 49.75 | 61.13 | 64.87 | 74.24 | 70.15 | 62.55 | 54.11 | 48.97 | 41.92 | 55.49 | |||||||||||||
1942 | 43.02 | 41.46 | 48.24 | 53.40 | 58.63 | 67.12 | a | 76.98 | 74.34 | 65.30 | 59.52 | 50.77 | 44.98 | b | 56.98 | |||||||||||
1943 | 43.48 | 46.96 | 51.69 | 56.83 | 62.21 | 63.95 | 72.87 | a | 72.24 | 70.57 | 60.13 | 48.55 | 40.61 | 57.51 | ||||||||||||
1944 | 40.89 | 40.10 | e | 47.55 | 51.18 | 60.32 | 62.33 | 70.60 | a | 73.15 | 69.18 | 59.50 | 46.28 | 43.48 | 55.38 | |||||||||||
1945 | 42.44 | 45.14 | 43.66 | 54.02 | 59.18 | 67.48 | 77.53 | 73.61 | 68.98 | 59.02 | 47.05 | 42.08 | 56.68 | |||||||||||||
1946 | 42.37 | 43.30 | 47.66 | 57.05 | a | 60.77 | 68.02 | 75.05 | 75.11 | 68.80 | 54.58 | 44.75 | 45.29 | 56.90 | ||||||||||||
1947 | 41.95 | 49.30 | 51.02 | 55.15 | 64.66 | 67.23 | 71.67 | d | 70.50 | 70.91 | a | 58.15 | 45.03 | 40.97 | b | 57.21 | ||||||||||
1948 | 46.73 | a | 42.05 | 42.55 | a | 54.52 | 57.92 | 67.22 | 75.60 | b | 74.87 | l | 68.92 | 58.66 | 47.83 | 39.95 | 54.72 | a | ||||||||
1949 | 29.39 | h | 38.54 | 45.08 | 57.07 | 59.31 | 70.50 | a | 74.71 | 71.19 | 70.05 | 57.27 | 55.12 | b | 40.55 | 58.13 | a | |||||||||
1950 | 38.26 | 48.20 | c | 50.15 | 57.87 | c | 60.85 | a | 66.97 | a | ----- | z | ----- | z | 66.25 | 63.46 | g | 53.62 | b | 49.13 | h | 55.27 | d | |||
1951 | 42.29 | c | 42.57 | g | 48.76 | d | 54.57 | 61.18 | 67.72 | 76.80 | c | 74.13 | 71.89 | b | 58.33 | a | 47.97 | 40.38 | c | 58.55 | a | |||||
1952 | 36.66 | c | 44.71 | h | 43.68 | 56.28 | a | 66.67 | b | 64.93 | c | 74.68 | 75.00 | a | 69.96 | b | 63.60 | 44.14 | b | 40.98 | d | 57.87 | a | |||
1953 | 47.89 | 42.58 | c | 48.33 | d | 53.50 | f | 54.29 | 65.13 | d | 78.21 | 72.44 | 70.40 | e | 58.44 | 52.41 | g | 43.02 | a | 58.07 | b | |||||
1954 | 41.29 | b | 49.16 | c | 44.37 | d | 57.70 | b | 62.10 | p | 67.09 | b | 77.13 | a | 70.50 | c | 67.28 | e | 58.87 | a | 51.32 | e | 41.07 | i | 58.47 | b |
1955 | 35.14 | c | 37.62 | g | 46.44 | d | 49.20 | c | 58.81 | 66.25 | 72.89 | 78.10 | a | 69.93 | 61.02 | 49.66 | a | 45.83 | b | 57.57 | a | |||||
1956 | 46.36 | c | 41.02 | c | 48.62 | a | 51.23 | h | 59.59 | h | 69.43 | c | 73.43 | a | 70.10 | b | 71.76 | c | 56.95 | 49.12 | 45.27 | a | 57.20 | b | ||
1957 | 37.66 | f | 49.28 | a | 49.00 | a | 51.17 | c | 56.98 | c | 71.72 | a | 74.28 | a | 73.88 | a | 68.92 | d | 55.00 | a | 45.67 | 44.24 | 58.20 | a | ||
1958 | 44.04 | h | 47.59 | a | 43.17 | a | 51.95 | a | 64.16 | i | 67.22 | c | 71.97 | b | 76.87 | 69.38 | 65.80 | u | ----- | z | 48.27 | a | 59.55 | d | ||
1959 | 45.88 | a | 42.46 | 51.74 | 59.58 | 59.53 | 71.62 | 79.53 | 73.05 | 65.73 | 61.14 | b | 51.93 | a | 45.27 | a | 58.96 | |||||||||
1960 | 38.40 | 44.09 | 52.31 | j | 55.76 | a | 61.27 | a | 74.16 | a | 77.95 | 75.74 | 72.43 | 58.63 | 47.40 | a | 43.17 | b | 59.00 | a | ||||||
1961 | 44.58 | 47.98 | 50.44 | f | 56.97 | 60.03 | a | 74.22 | 79.13 | 75.10 | a | 66.52 | a | 58.14 | b | 47.33 | 41.65 | a | 59.24 | a | ||||||
1962 | 42.93 | a | 45.06 | d | 43.87 | 57.71 | b | 56.53 | a | 67.07 | a | 72.83 | a | 74.33 | a | 68.59 | a | 58.65 | 50.00 | 44.76 | h | 57.96 | a | |||
1963 | 42.00 | o | 50.79 | 46.52 | 49.10 | 60.31 | 65.10 | a | 71.90 | b | 71.87 | 69.98 | f | 58.85 | d | 47.87 | c | 40.98 | i | 58.03 | c | |||||
1964 | 38.74 | f | 42.19 | 43.75 | a | 51.17 | a | 56.76 | 64.83 | 76.15 | d | 74.18 | a | 65.97 | 62.50 | a | 42.20 | b | 43.20 | a | 56.63 | a | ||||
1965 | 44.59 | b | 44.80 | 45.79 | 49.73 | ----- | z | 63.44 | e | 71.32 | f | 72.78 | f | 61.50 | d | 61.48 | b | 47.17 | f | 38.07 | j | 53.05 | e | |||
1966 | 38.52 | e | 37.71 | d | 47.69 | g | 55.14 | e | 60.98 | f | 66.13 | o | 71.92 | m | 75.11 | i | 66.95 | b | 57.25 | e | 49.27 | f | 41.19 | 49.46 | f | |
1967 | ----- | z | 44.40 | d | 45.85 | h | 41.66 | h | 58.41 | i | 62.67 | j | 76.70 | c | 76.89 | d | 67.60 | e | 61.03 | b | 54.15 | c | 37.94 | f | 63.46 | f |
1968 | 41.30 | h | 50.14 | h | 48.32 | l | 51.64 | l | ----- | z | 70.18 | p | 76.50 | t | 70.95 | j | ----- | z | 59.84 | 49.48 | c | ----- | z | 54.66 | j | |
1969 | 49.00 | q | 42.82 | q | ----- | z | ----- | z | ----- | z | ----- | z | 77.02 | f | 77.95 | 72.54 | c | 54.77 | 49.61 | h | 42.13 | p | 68.42 | i | ||
1970 | 41.69 | j | ----- | z | 48.00 | o | ----- | z | 62.30 | d | 68.35 | d | 77.55 | c | 77.50 | b | 67.39 | h | 57.67 | e | 51.08 | e | 41.03 | o | 65.74 | f |
1971 | 43.93 | p | 42.27 | o | 48.78 | m | 51.02 | g | 54.91 | t | 67.86 | e | 75.33 | a | 77.03 | b | 69.15 | 56.19 | b | 48.73 | b | 37.67 | p | 65.72 | f | |
1972 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 45.47 | 39.87 | d | 42.67 | j | |
1973 | 38.47 | 43.98 | b | 44.17 | a | 53.38 | 64.47 | a | 71.13 | d | 75.23 | i | 74.00 | f | 66.61 | b | 58.34 | b | 47.87 | 44.30 | f | 54.27 | c | |||
1974 | 40.80 | d | 44.31 | a | 51.44 | f | 52.66 | a | 63.10 | 72.53 | 75.71 | 74.10 | a | 73.53 | 59.79 | b | 48.71 | a | 40.97 | a | 58.75 | a | ||||
1975 | 43.33 | a | 44.50 | 46.71 | e | 46.26 | c | 61.15 | a | 69.56 | c | 74.18 | a | 71.79 | 70.78 | c | 57.47 | a | 48.07 | a | 45.64 | b | 56.62 | |||
1976 | 44.57 | a | 44.76 | d | 47.15 | a | 50.79 | a | 63.83 | b | 68.71 | a | 74.75 | a | 68.52 | a | 65.85 | d | 58.34 | 52.36 | b | 43.07 | a | 56.89 | ||
1977 | 41.87 | 49.59 | 43.37 | a | 56.53 | a | 53.66 | b | 70.81 | a | 74.09 | b | 74.33 | a | 66.25 | 60.82 | a | 51.89 | b | 48.16 | 57.61 | |||||
1978 | 43.84 | 46.33 | a | 51.87 | 51.02 | 61.35 | a | 70.04 | c | 74.21 | c | 73.77 | 67.31 | c | ----- | z | 46.72 | 38.95 | c | 56.86 | a | |||||
1979 | 36.96 | e | 41.16 | 47.27 | c | 53.57 | a | 62.39 | c | 69.96 | c | 72.42 | e | 69.91 | b | 71.75 | d | 59.69 | d | 46.05 | a | 44.87 | e | 56.33 | ||
1980 | 46.29 | c | 47.86 | a | 46.24 | 54.21 | a | 57.54 | h | ----- | z | 73.34 | l | 73.67 | v | 69.00 | f | 61.30 | d | 50.67 | c | 47.48 | e | 50.58 | e | |
1981 | 45.28 | b | 46.81 | a | 47.53 | 57.11 | c | 62.75 | g | 75.18 | h | 76.53 | m | 77.70 | i | 70.89 | c | 55.74 | h | 50.54 | c | 45.73 | i | 53.03 | f | |
1982 | 39.96 | c | 46.38 | b | 45.61 | c | 52.41 | g | 62.22 | f | 66.11 | g | 74.70 | h | 75.03 | p | 68.74 | i | 55.93 | j | 44.83 | j | 41.18 | c | 43.28 | h |
1983 | 43.30 | d | 47.00 | d | 47.57 | b | 47.73 | d | 58.50 | g | 67.40 | j | 71.62 | g | 72.50 | e | 71.12 | f | 59.20 | c | 48.67 | a | 46.02 | c | 51.50 | d |
1984 | 44.17 | e | 45.74 | b | 52.25 | a | 52.76 | c | 66.20 | c | 69.26 | c | 76.70 | i | 74.81 | d | 72.91 | c | 54.24 | d | 49.10 | i | 34.52 | h | 59.15 | c |
1985 | 40.58 | a | 46.05 | 45.34 | o | 60.32 | m | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 43.32 | j | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 42.30 | 44.95 | 47.36 | 53.90 | 60.57 | 68.19 | 74.86 | 73.70 | 68.54 | 58.50 | 48.64 | 43.59 | 57.07 | |||||||||||||
S.D. | 3.09 | 3.14 | 2.91 | 3.22 | 3.05 | 2.87 | 2.24 | 2.43 | 2.76 | 2.35 | 2.83 | 2.72 | 1.00 | |||||||||||||
SKEW | -0.38 | -0.31 | 0.23 | -0.42 | -0.19 | 0.26 | 0.23 | -0.09 | -0.34 | -0.26 | 0.14 | 0.28 | 0.08 | |||||||||||||
MAX | 47.89 | 50.79 | 52.82 | 59.58 | 66.67 | 74.22 | 79.53 | 78.10 | 73.53 | 63.60 | 55.12 | 49.44 | 58.96 | |||||||||||||
MIN | 35.14 | 37.71 | 42.55 | 46.26 | 53.66 | 62.33 | 70.60 | 68.52 | 61.50 | 53.39 | 42.20 | 38.95 | 55.38 | |||||||||||||
YRS | 37 | 41 | 38 | 39 | 34 | 39 | 37 | 39 | 42 | 43 | 41 | 36 | 14 |