YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1893 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1894 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1895 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1896 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1897 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1898 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | 41.67 | v | 51.72 | 56.29 | 66.77 | 72.56 | 71.60 | 65.63 | 55.89 | 47.77 | 34.66 | 58.10 | c | |||||||||
1910 | 40.50 | 41.46 | 51.79 | 55.20 | 62.24 | 67.65 | 74.13 | 74.48 | 69.27 | 57.60 | 50.05 | 44.63 | 57.42 | |||||||||||||
1911 | 43.87 | 40.91 | 50.48 | 51.67 | 56.76 | 65.47 | 69.82 | 72.15 | 67.10 | 55.69 | 46.30 | 35.27 | 54.62 | |||||||||||||
1912 | 40.98 | a | 41.29 | 43.73 | a | 46.74 | a | 55.69 | 66.48 | f | 70.35 | d | ----- | z | 61.77 | 52.26 | 47.08 | 37.95 | a | 49.79 | b | |||||
1913 | 35.90 | 39.25 | 42.63 | 51.53 | 56.88 | a | 63.90 | 70.58 | 70.52 | 62.98 | 54.40 | 47.69 | a | 38.39 | 52.89 | |||||||||||
1914 | 41.97 | 42.10 | d | 49.40 | 54.31 | a | 57.37 | e | 67.22 | a | 71.53 | 72.11 | 68.18 | 58.13 | 52.38 | 39.27 | 56.17 | |||||||||
1915 | 38.70 | a | 42.05 | 46.85 | a | 51.98 | 54.97 | 63.80 | 70.44 | 70.56 | 61.35 | 55.06 | 43.57 | 38.69 | 53.17 | |||||||||||
1916 | 34.47 | 44.79 | a | 47.83 | b | 49.92 | 55.24 | b | 63.72 | 72.11 | 69.60 | 63.32 | 51.34 | 40.78 | 31.68 | 52.07 | ||||||||||
1917 | 34.16 | 37.91 | a | 40.27 | 48.95 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 40.32 | h | |||
1918 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 72.59 | m | 71.84 | i | 68.30 | h | 65.83 | l | 55.18 | q | 41.04 | d | 33.68 | i | 41.04 | k |
1919 | 33.35 | d | 33.68 | c | 42.85 | a | 52.75 | h | 58.94 | n | ----- | z | 72.89 | d | 68.78 | v | 59.80 | y | 52.22 | o | 39.50 | p | 38.45 | b | 44.24 | g |
1920 | 40.22 | d | 42.98 | i | 41.20 | i | 46.97 | k | 58.92 | s | 64.78 | n | 73.60 | f | 73.64 | t | 60.59 | s | 45.69 | r | 44.07 | p | ----- | z | 40.22 | k |
1921 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 73.00 | t | 70.60 | p | 63.79 | p | 57.02 | k | 42.80 | t | 42.36 | m | ----- | z |
1922 | 32.52 | c | 36.58 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 48.04 | r | 39.03 | m | 39.96 | h | 34.55 | j |
1923 | 38.80 | f | 36.96 | 41.30 | c | 48.26 | m | 59.96 | g | 64.38 | n | 72.21 | c | 70.11 | 59.93 | g | 47.96 | r | 44.14 | b | 36.63 | a | 50.23 | f | ||
1924 | 34.48 | j | 41.21 | e | 37.48 | a | 47.19 | a | 57.16 | 65.53 | k | 72.02 | b | ----- | z | ----- | z | 51.20 | p | ----- | z | ----- | z | 51.01 | g | |
1925 | 38.88 | s | 41.41 | e | 44.96 | h | 50.94 | l | 59.48 | b | 66.96 | d | 74.45 | c | 72.55 | t | 68.17 | 53.54 | c | 41.87 | d | 36.43 | h | 57.98 | e | |
1926 | 32.24 | b | 39.41 | a | 43.03 | b | 48.89 | k | 56.94 | g | 66.42 | 71.54 | c | 72.03 | b | 69.76 | k | ----- | z | 44.79 | k | 41.19 | o | 54.11 | f | |
1927 | 39.65 | h | 40.50 | f | 42.47 | p | 48.78 | e | 57.73 | g | 64.48 | c | 73.20 | c | 69.73 | c | 67.77 | o | 54.73 | t | ----- | z | 35.46 | c | 58.33 | g |
1928 | 37.40 | k | 39.25 | i | 45.06 | d | 45.31 | n | 59.27 | i | 64.70 | b | 73.38 | c | 71.43 | c | 66.39 | g | 56.76 | n | 42.10 | j | 35.70 | i | 63.64 | h |
1929 | 31.52 | h | 34.06 | c | 41.58 | f | 45.12 | m | 58.40 | p | 66.78 | g | 74.00 | e | 71.48 | j | 65.00 | i | 51.57 | i | 40.88 | e | 37.87 | d | 46.70 | h |
1930 | 34.05 | j | 42.74 | e | 42.93 | b | 52.72 | g | 53.50 | i | 66.13 | c | 72.46 | h | 70.66 | o | 61.93 | c | 53.24 | l | 43.00 | p | 34.08 | e | 49.56 | g |
1931 | 35.16 | c | 40.92 | c | 44.65 | n | 51.77 | j | 59.29 | s | 65.82 | p | 75.48 | f | 70.57 | q | 64.38 | r | 52.88 | o | 34.61 | l | 32.66 | c | 36.25 | i |
1932 | 30.93 | h | 39.31 | h | 40.88 | w | 47.14 | w | 57.50 | s | 63.41 | g | 71.92 | m | 70.80 | u | 70.13 | k | 55.05 | j | ----- | z | 35.66 | l | ----- | z |
1933 | 32.55 | j | 32.18 | f | 43.89 | q | 46.93 | p | 53.83 | j | 66.05 | h | 74.08 | m | 72.09 | t | 73.06 | v | 55.55 | u | ----- | z | 41.20 | k | ----- | z |
1934 | 37.41 | h | 41.67 | d | 49.76 | l | 52.90 | i | 60.08 | s | 64.77 | o | 74.76 | f | 69.06 | w | 62.67 | u | 53.52 | h | 40.53 | k | 37.81 | r | 41.67 | k |
1935 | 34.36 | x | 37.86 | f | 38.45 | i | 46.68 | k | 49.19 | o | 63.80 | c | 71.19 | g | 67.25 | w | 62.61 | u | 50.19 | r | 35.73 | q | 31.77 | k | 63.80 | k |
1936 | ----- | z | 38.05 | h | 43.80 | k | 49.03 | n | 58.68 | f | 68.56 | d | 73.19 | 71.80 | d | 62.33 | f | 53.86 | c | 42.87 | c | 35.78 | d | 57.68 | f | |
1937 | 21.33 | b | 36.42 | b | 41.65 | d | 48.02 | i | 57.84 | 63.98 | 72.81 | 73.13 | 67.20 | 55.79 | 43.67 | a | 40.40 | u | 53.38 | b | ||||||
1938 | 37.83 | e | 38.93 | 42.58 | e | 48.83 | 55.39 | 64.93 | 70.44 | 69.85 | a | 66.78 | a | 52.95 | 37.62 | 38.82 | 52.08 | |||||||||
1939 | 35.03 | a | 28.38 | 44.27 | 54.08 | d | 57.69 | 63.50 | r | 74.17 | s | 72.78 | d | 64.61 | c | 49.38 | a | 43.66 | b | 42.18 | c | 49.21 | b | |||
1940 | 37.74 | 37.52 | c | 46.19 | d | 49.71 | p | 61.06 | d | 69.45 | a | 73.68 | 72.48 | 64.82 | b | 54.26 | 42.14 | e | 44.42 | r | 55.93 | b | ||||
1941 | 37.97 | l | 42.43 | e | 45.96 | c | 45.90 | a | 57.37 | a | 62.73 | 70.77 | 69.54 | c | 62.94 | c | 50.96 | c | 44.46 | f | 38.90 | k | 56.51 | c | ||
1942 | 37.06 | f | 36.50 | l | 39.93 | h | 47.64 | b | 53.63 | a | 63.42 | 74.68 | a | 71.29 | c | 65.57 | c | 54.69 | b | 46.63 | d | 40.28 | a | 57.54 | c | |
1943 | 37.92 | a | 44.45 | r | 44.93 | b | 52.10 | a | 58.40 | a | 66.21 | a | 73.30 | d | 71.29 | e | 66.40 | f | 54.60 | b | 44.67 | c | ----- | z | 55.93 | c |
1944 | 37.21 | c | 36.18 | a | 40.92 | 46.25 | 55.13 | a | 61.67 | 70.84 | 72.63 | 65.47 | 56.74 | 42.18 | 38.19 | 51.95 | ||||||||||
1945 | 35.53 | a | 39.80 | 43.08 | 46.18 | b | 54.70 | a | 61.78 | 73.65 | 71.98 | a | 64.59 | b | 57.50 | 42.33 | 33.86 | c | 52.08 | |||||||
1946 | 36.23 | 36.46 | 43.78 | b | 55.07 | a | 56.13 | 67.15 | 73.65 | a | 71.40 | 65.93 | 51.27 | 40.95 | 41.81 | 53.32 | ||||||||||
1947 | 34.98 | 41.79 | 44.15 | 48.52 | a | 60.35 | 64.20 | 73.66 | 70.69 | 66.50 | 55.48 | 39.32 | 34.58 | 52.85 | ||||||||||||
1948 | 37.37 | 37.07 | a | 38.81 | 49.55 | 56.48 | 64.88 | a | 72.78 | b | 72.60 | b | 67.19 | a | 56.33 | e | 39.89 | c | 35.26 | f | 53.90 | a | ||||
1949 | 25.97 | a | 29.37 | e | 41.82 | 53.56 | c | 56.52 | h | 65.35 | f | 72.00 | q | 66.43 | q | 68.42 | q | 48.13 | p | 47.53 | m | 35.00 | g | 37.68 | h | |
1950 | 35.78 | f | 41.68 | i | 43.65 | h | 51.94 | f | 55.77 | k | 64.15 | g | 71.06 | e | 68.67 | e | 63.19 | i | 59.67 | s | 45.83 | i | 41.05 | i | 69.87 | j |
1951 | 34.86 | f | 37.24 | e | 39.85 | k | 48.50 | h | 54.03 | m | 61.00 | d | 74.39 | c | 70.08 | f | 62.84 | n | 52.17 | s | 44.38 | q | 36.45 | l | 57.54 | i |
1952 | 35.97 | b | 36.91 | b | 35.46 | d | 49.48 | c | 57.88 | c | 63.61 | c | 71.25 | a | 73.02 | c | 66.34 | h | 57.95 | k | 38.32 | m | 34.24 | h | 52.95 | d |
1953 | 38.85 | e | 35.15 | k | 42.45 | k | 48.22 | l | 50.52 | k | 63.25 | h | 73.83 | e | 69.10 | k | 64.27 | q | 53.11 | i | 43.25 | p | 31.60 | j | 56.34 | j |
1954 | 36.45 | t | 42.66 | 41.63 | e | 53.40 | f | 57.15 | d | 64.63 | d | 73.50 | c | 69.24 | d | 66.79 | d | 57.05 | c | 46.46 | e | 36.57 | b | 55.57 | b | |
1955 | 31.85 | h | 34.55 | 41.76 | b | 46.86 | a | 55.53 | a | 63.38 | b | 69.82 | 69.93 | b | 64.64 | a | 57.89 | i | 44.41 | b | 39.44 | d | 53.03 | b | ||
1956 | 39.05 | c | 34.71 | 44.25 | a | 48.62 | a | 58.91 | b | 70.33 | 73.00 | a | 68.34 | 69.66 | a | 54.98 | 41.08 | 37.30 | d | 53.35 | ||||||
1957 | 37.87 | a | 46.31 | a | 45.23 | 48.28 | 53.76 | b | 67.60 | 74.90 | 70.50 | 64.18 | 54.27 | 40.91 | c | 39.54 | c | 53.61 | ||||||||
1958 | 36.88 | c | 42.32 | 40.30 | a | 48.45 | 61.37 | a | 69.37 | 74.03 | b | 74.52 | a | 66.87 | 55.90 | 43.30 | b | 42.30 | c | 54.63 | ||||||
1959 | 38.59 | b | 36.83 | b | 44.24 | 52.88 | b | 55.90 | 70.67 | a | 76.57 | a | 70.76 | 64.43 | 55.39 | 45.21 | f | 40.52 | b | 55.16 | a | |||||
1960 | 32.77 | c | 35.90 | e | 48.21 | 52.12 | a | 58.32 | 71.62 | 76.40 | 75.02 | 68.68 | 55.37 | a | 44.87 | 36.87 | 54.68 | |||||||||
1961 | 39.34 | 41.00 | 44.20 | a | 51.93 | 58.13 | 71.09 | a | 75.95 | a | 73.09 | c | 62.64 | a | 53.03 | 42.93 | b | 37.58 | 54.24 | |||||||
1962 | 36.48 | 40.21 | b | 38.84 | 53.98 | b | 56.03 | 66.03 | a | 73.83 | a | 74.32 | a | 67.97 | 56.59 | b | 48.09 | c | 41.02 | d | 54.45 | |||||
1963 | 34.52 | 43.73 | 42.64 | b | 47.03 | a | 60.44 | 64.32 | ----- | z | 71.52 | a | 67.48 | 58.13 | a | 46.34 | e | 37.90 | a | 52.19 | a | |||||
1964 | 33.45 | c | 34.94 | c | 39.06 | d | 48.33 | c | 56.32 | a | 64.05 | a | 75.18 | 71.20 | c | 64.95 | 57.78 | b | 40.14 | a | 37.06 | 51.87 | ||||
1965 | 39.53 | a | 37.69 | b | 40.81 | 47.93 | a | 53.94 | 61.40 | 73.80 | d | 71.33 | b | 62.17 | 56.60 | b | 46.64 | b | 37.20 | c | 52.42 | |||||
1966 | 33.48 | c | 33.81 | a | 44.29 | 50.62 | e | 59.22 | b | 65.13 | 74.89 | 71.59 | d | 67.30 | 54.06 | 44.67 | i | 35.82 | 53.66 | a | ||||||
1967 | 37.34 | b | 38.71 | b | 44.92 | g | 44.76 | c | 55.53 | b | 64.02 | 74.31 | 71.43 | b | 66.18 | 57.33 | b | 47.75 | ----- | z | 55.74 | b | ||||
1968 | 36.37 | 44.89 | a | 43.74 | 48.14 | a | 56.30 | c | 65.62 | 71.05 | 67.62 | a | 63.55 | 55.42 | 44.02 | a | 33.98 | a | 52.56 | |||||||
1969 | 41.34 | b | 38.05 | 40.26 | 51.00 | 57.61 | 64.42 | 73.88 | b | 76.03 | b | 67.22 | 52.05 | 44.65 | 40.07 | a | 53.88 | |||||||||
1970 | 35.92 | a | 42.93 | 42.61 | 46.03 | 57.89 | 67.05 | 76.15 | 72.81 | 61.97 | 49.57 | a | 43.52 | 37.98 | d | 52.87 | ||||||||||
1971 | 37.02 | b | 38.54 | d | 44.27 | 47.00 | c | 53.13 | a | 64.43 | 75.10 | 71.13 | 64.00 | 50.27 | 41.75 | 32.86 | b | 51.63 | ||||||||
1972 | 35.13 | 38.72 | 48.74 | b | 49.20 | e | 56.38 | f | 66.04 | e | 74.39 | c | 71.57 | c | 64.97 | 54.98 | d | 40.40 | a | 36.70 | a | 52.80 | a | |||
1973 | 34.63 | a | 39.55 | 38.45 | c | 47.48 | c | 58.73 | 65.98 | a | 72.69 | 71.61 | 64.02 | a | 54.68 | 43.19 | a | 38.89 | 52.49 | |||||||
1974 | 36.71 | c | 38.46 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 37.59 | j |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 36.28 | 38.87 | 43.32 | 49.66 | 57.10 | 65.57 | 73.11 | 71.54 | 65.39 | 54.66 | 43.81 | 37.58 | 53.39 | |||||||||||||
S.D. | 3.84 | 3.66 | 3.37 | 2.78 | 2.14 | 2.53 | 1.74 | 1.73 | 2.21 | 2.32 | 3.10 | 2.83 | 1.43 | |||||||||||||
SKEW | -1.45 | -0.53 | 0.28 | 0.38 | 0.39 | 0.58 | -0.13 | 0.25 | -0.05 | -0.61 | 0.51 | 0.11 | 1.13 | |||||||||||||
MAX | 43.87 | 46.31 | 51.79 | 55.20 | 62.24 | 71.62 | 76.57 | 76.03 | 69.66 | 58.13 | 52.38 | 44.63 | 57.42 | |||||||||||||
MIN | 21.33 | 28.38 | 35.46 | 44.76 | 53.13 | 61.00 | 69.82 | 67.62 | 61.35 | 49.38 | 37.62 | 31.68 | 51.63 | |||||||||||||
YRS | 45 | 52 | 46 | 42 | 42 | 47 | 51 | 46 | 41 | 41 | 42 | 41 | 24 |