YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1906 | 38.67 | v | 35.82 | 34.55 | b | 41.75 | j | 43.68 | 46.43 | 53.07 | a | 49.83 | a | 47.89 | b | 43.68 | 37.70 | 36.48 | 42.91 | b | ||||||
1907 | 26.90 | a | 36.18 | 32.90 | 37.03 | 43.65 | 46.00 | 50.81 | 49.13 | 48.83 | 46.43 | a | 40.04 | b | 35.93 | a | 41.15 | |||||||||
1908 | 34.77 | 32.21 | 34.48 | 36.93 | 41.61 | 47.28 | a | 50.65 | 49.24 | b | 44.87 | 41.20 | a | 41.83 | 32.48 | 40.63 | ||||||||||
1909 | 29.32 | 34.25 | 34.58 | 36.14 | a | 39.94 | 45.33 | 47.81 | 47.87 | 47.23 | 43.52 | 36.80 | 29.74 | 39.38 | ||||||||||||
1910 | 30.77 | 30.89 | 36.45 | 37.93 | 44.10 | 44.13 | 48.42 | 46.81 | 46.20 | ----- | z | ----- | z | ----- | z | 40.63 | c | |||||||||
1911 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 43.20 | 49.06 | 49.52 | 44.97 | 40.68 | 36.40 | 34.00 | 42.55 | e | |||||||
1912 | 35.68 | 36.14 | 31.15 | d | 36.23 | 42.61 | 44.69 | a | 50.63 | a | 49.68 | 45.27 | 39.05 | l | 38.53 | 35.17 | a | 40.53 | a | |||||||
1913 | 30.23 | 31.83 | d | 32.94 | 37.17 | a | 42.61 | 48.17 | 51.10 | 50.74 | 48.75 | v | 41.52 | 38.63 | 37.00 | 40.18 | a | |||||||||
1914 | 36.68 | 36.50 | 38.60 | a | 40.47 | 43.43 | a | 47.60 | 48.67 | a | 49.77 | 48.27 | 47.33 | a | 40.86 | a | 32.71 | 42.57 | ||||||||
1915 | 33.74 | 36.22 | e | 40.45 | 40.90 | 45.70 | a | 47.23 | 52.06 | 53.23 | 48.70 | 43.85 | k | ----- | z | ----- | z | 44.25 | c | |||||||
1916 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1917 | ----- | z | 27.95 | f | 31.61 | 37.83 | 40.72 | m | 42.16 | e | ----- | z | 42.40 | a | 45.57 | 45.67 | j | 36.70 | 36.81 | j | 39.38 | f | ||||
1918 | 33.20 | f | 30.54 | 35.23 | 35.90 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 33.89 | i | |||
1919 | ----- | z | ----- | z | 33.13 | p | 40.29 | w | ----- | z | ----- | z | 48.00 | k | 50.67 | g | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1920 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1921 | ----- | z | 34.96 | c | 35.65 | h | ----- | z | ----- | z | ----- | z | 48.78 | v | 40.92 | f | ----- | z | 40.84 | 36.86 | i | ----- | z | 37.90 | j | |
1922 | ----- | z | 26.57 | e | 31.00 | 35.23 | d | 36.77 | a | 45.74 | g | 47.46 | e | 48.19 | j | 46.08 | r | 41.65 | ----- | z | 30.07 | b | 35.53 | e | ||
1923 | 29.87 | 23.82 | f | 30.18 | t | 35.12 | f | 37.38 | w | 38.92 | r | 36.06 | 46.00 | 43.27 | 38.06 | 32.63 | 26.74 | 36.09 | e | |||||||
1924 | 22.23 | ----- | z | ----- | z | ----- | z | 33.94 | 43.50 | 42.10 | 53.42 | 47.23 | 43.54 | g | 35.79 | k | 30.55 | 38.99 | e | |||||||
1925 | 33.91 | h | 35.29 | g | 34.45 | 38.80 | 43.57 | a | 46.33 | 49.35 | e | 50.16 | 49.00 | c | 43.03 | 37.00 | b | 38.84 | 43.05 | b | ||||||
1926 | 34.29 | c | 37.36 | 38.31 | e | 42.24 | e | 45.13 | 49.60 | 50.08 | g | 52.58 | 46.27 | 42.74 | h | 41.72 | a | 34.77 | 42.23 | b | ||||||
1927 | 35.03 | 34.75 | 34.42 | 37.27 | 42.45 | 49.67 | 51.94 | 52.84 | 49.53 | 45.35 | 39.83 | 31.71 | 42.07 | |||||||||||||
1928 | 37.90 | 36.10 | 38.74 | 39.28 | a | 44.29 | 49.20 | 52.97 | 50.55 | 47.97 | 45.06 | 39.40 | 33.58 | 42.92 | ||||||||||||
1929 | 29.52 | 28.29 | 36.71 | 35.93 | 42.77 | 48.60 | 50.10 | 51.35 | 48.10 | 45.90 | 37.47 | 37.45 | 41.02 | |||||||||||||
1930 | 25.73 | a | 35.46 | 36.29 | 42.63 | 41.06 | 47.17 | 49.42 | 52.16 | 49.77 | 42.39 | 37.37 | 36.84 | 41.36 | ||||||||||||
1931 | 39.16 | 34.89 | 38.39 | 39.17 | 45.35 | 48.17 | 51.06 | 50.35 | 49.00 | 43.23 | 35.13 | 34.52 | 42.37 | |||||||||||||
1932 | 33.06 | 32.10 | 38.03 | 39.93 | 42.68 | 48.37 | 48.94 | 53.13 | 48.33 | 45.23 | 41.03 | 30.84 | 41.81 | |||||||||||||
1933 | 32.10 | 29.36 | 34.87 | 35.87 | 41.29 | 44.70 | 48.23 | 51.03 | 47.10 | 44.10 | 39.14 | a | 38.26 | 40.50 | ||||||||||||
1934 | 37.94 | 38.75 | 40.77 | 44.23 | 46.03 | 47.30 | 51.58 | 53.61 | c | 49.87 | 45.55 | 41.93 | 36.45 | 44.50 | ||||||||||||
1935 | 33.48 | 36.54 | 32.90 | 36.73 | 42.03 | 49.20 | 50.13 | 50.58 | 50.07 | 41.60 | a | 34.73 | 37.42 | 41.28 | ||||||||||||
1936 | 36.06 | 29.31 | 33.77 | 41.37 | 46.48 | 50.53 | 51.06 | 53.52 | 48.23 | 46.58 | 37.40 | 36.58 | 42.58 | |||||||||||||
1937 | 25.71 | 32.22 | a | 37.48 | 38.03 | 42.90 | a | 49.67 | 50.65 | 49.90 | 50.40 | 45.17 | a | 41.37 | 37.20 | a | 41.72 | |||||||||
1938 | 36.65 | 34.07 | 36.19 | 40.50 | 42.94 | 47.70 | 50.77 | a | 49.68 | 52.77 | 43.32 | 35.83 | 34.84 | 42.10 | ||||||||||||
1939 | 37.13 | 33.07 | 35.68 | 41.03 | 44.32 | 47.97 | a | 51.87 | a | 52.42 | 49.00 | 44.84 | 44.23 | 40.19 | 43.48 | |||||||||||
1940 | 37.81 | 38.69 | 39.80 | a | 42.45 | a | 46.29 | 48.52 | a | 52.74 | 53.40 | a | 52.54 | b | 47.90 | b | 35.90 | a | 37.70 | a | 44.48 | |||||
1941 | 37.97 | 38.04 | 41.87 | 41.33 | 45.03 | 49.10 | 54.32 | 52.87 | 48.43 | 45.94 | 40.43 | 35.74 | 44.26 | |||||||||||||
1942 | 35.74 | 35.50 | 34.94 | 41.36 | b | 45.55 | 48.73 | 55.19 | 53.55 | 49.73 | 46.97 | 37.10 | 36.61 | 43.41 | ||||||||||||
1943 | 28.81 | 34.64 | 34.06 | 40.77 | 42.13 | 46.60 | 51.23 | 51.77 | 51.47 | 45.58 | 40.67 | 34.10 | 41.82 | |||||||||||||
1944 | 35.29 | 34.21 | 35.06 | 39.53 | 43.84 | 47.37 | 51.06 | 52.48 | 51.47 | 47.94 | 40.73 | 33.06 | 42.67 | |||||||||||||
1945 | 33.74 | h | 35.52 | a | 34.48 | 36.27 | 45.39 | 46.13 | 50.23 | 51.84 | 47.70 | 45.16 | 37.43 | 35.68 | 42.35 | a | ||||||||||
1946 | 35.84 | 35.64 | 35.87 | 39.37 | 46.06 | 47.87 | 51.77 | 52.23 | 49.63 | 40.77 | 35.38 | a | 35.84 | 42.19 | ||||||||||||
1947 | 30.48 | 36.36 | 39.58 | 41.43 | 46.42 | 49.55 | a | 55.57 | a | 52.38 | b | 49.92 | d | 45.55 | i | 38.54 | d | 37.50 | g | 44.02 | b | |||||
1948 | 33.64 | i | 32.06 | l | 33.62 | j | 36.68 | h | 44.80 | k | 51.33 | f | 51.32 | 54.69 | b | 48.58 | f | 43.05 | k | 35.56 | n | ----- | z | 53.01 | j | |
1949 | 26.24 | f | 30.76 | k | 36.61 | h | 39.10 | j | 44.42 | e | 47.17 | 49.89 | c | 53.35 | 51.21 | a | 41.21 | c | 44.93 | 33.20 | k | 47.46 | e | |||
1950 | ----- | z | 33.73 | m | 33.62 | o | 36.56 | l | 40.59 | n | 49.05 | h | 50.52 | d | 52.61 | 49.38 | f | 43.86 | q | 34.40 | y | ----- | z | 51.57 | j | |
1951 | 31.67 | j | 33.88 | k | 30.06 | m | 38.70 | j | 42.41 | i | 48.19 | i | 51.87 | a | 51.39 | 48.19 | i | ----- | z | 37.42 | r | 33.80 | u | 51.63 | j | |
1952 | 32.69 | o | 33.94 | l | 34.09 | t | 36.79 | k | 43.29 | j | 46.06 | n | 51.35 | 51.66 | b | 50.76 | i | 47.38 | j | 36.22 | u | ----- | z | 51.51 | j | |
1953 | ----- | z | 37.40 | w | 35.43 | q | 37.70 | j | 44.24 | n | 46.50 | j | 51.32 | 53.52 | 51.78 | c | 43.90 | k | 40.00 | k | 36.27 | i | 52.21 | i | ||
1954 | 30.25 | o | 33.56 | l | 31.89 | l | 34.74 | k | 43.28 | m | 47.17 | l | 52.68 | f | 53.74 | h | 51.75 | f | 45.95 | l | 45.65 | m | 37.31 | o | ----- | z |
1955 | 34.43 | q | 31.50 | j | 30.83 | h | 35.19 | i | 40.32 | l | 48.00 | i | 50.61 | 50.03 | 49.15 | c | 42.22 | m | 33.39 | l | 32.74 | l | 49.93 | i | ||
1956 | 33.33 | j | 28.45 | i | 32.29 | j | 38.35 | j | 45.96 | e | 47.62 | i | 52.87 | a | 52.70 | a | 50.07 | 42.65 | 35.06 | n | 34.81 | 46.51 | f | |||
1957 | 29.26 | 33.04 | 36.39 | 41.00 | 47.39 | 50.10 | 50.58 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 41.11 | e | |||||||
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 | 46.19 | n | 44.03 | 37.93 | a | 35.08 | g | 40.98 | j | |
1964 | 33.70 | d | 31.43 | h | ----- | z | 35.74 | c | 39.33 | d | 46.44 | c | 48.74 | h | 48.75 | g | 43.85 | j | 39.62 | j | 32.94 | l | 32.05 | l | 38.81 | h |
1965 | 31.41 | i | 34.71 | k | 32.29 | c | 37.40 | j | 38.53 | l | ----- | z | 48.18 | n | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 32.29 | k |
1966 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1967 | ----- | z | 35.70 | e | 35.30 | a | 36.48 | a | 43.96 | f | 53.62 | f | 54.58 | 55.81 | 53.59 | c | 45.81 | d | 39.30 | 34.54 | c | 43.46 | c | |||
1968 | 35.03 | b | 38.50 | a | 38.79 | c | 38.03 | 45.83 | a | 49.86 | b | 54.48 | 52.06 | 49.83 | g | 43.70 | h | 41.16 | k | 32.33 | j | 44.07 | d | |||
1969 | 28.41 | b | 32.04 | a | 34.59 | d | 38.77 | 44.97 | 52.59 | c | 50.65 | 50.10 | 48.65 | d | 40.96 | h | 39.48 | g | 38.17 | g | 42.31 | c | ||||
1970 | 35.57 | a | 37.15 | a | 36.11 | c | 35.92 | d | 41.52 | d | 52.27 | 53.84 | 53.29 | 47.55 | a | 42.00 | d | 39.28 | a | 33.08 | f | 43.14 | a | |||
1971 | 32.64 | c | 34.62 | b | 31.76 | f | 36.63 | 42.64 | c | 46.00 | 49.43 | a | 53.83 | b | 46.93 | b | 43.13 | 38.50 | b | 32.14 | b | 41.50 | a | |||
1972 | 30.06 | 33.18 | a | 37.61 | 35.08 | d | 44.66 | b | 50.68 | b | 54.43 | a | 54.84 | 47.17 | 41.68 | 41.21 | a | 32.27 | e | 41.90 | ||||||
1973 | 33.68 | c | 33.85 | a | ----- | z | 38.07 | 42.48 | j | 48.20 | e | 49.90 | a | 49.13 | 48.83 | f | 43.16 | 33.82 | b | 36.52 | f | 41.23 | d | |||
1974 | 32.48 | d | 34.36 | 35.32 | 39.53 | 40.19 | d | 48.37 | c | 51.13 | 52.87 | 51.97 | 42.68 | c | 39.75 | j | 36.38 | j | 42.89 | b | ||||||
1975 | 31.67 | j | 33.00 | j | 31.81 | j | 34.33 | i | 41.57 | j | 44.90 | j | 52.50 | g | 52.57 | a | 49.81 | d | 42.62 | j | 37.42 | k | 33.24 | j | 51.19 | j |
1976 | 34.33 | j | 31.79 | j | 32.23 | i | 36.82 | h | 41.55 | k | 44.38 | f | 48.90 | 49.77 | 49.61 | b | 37.00 | j | 31.53 | m | 30.85 | k | 49.43 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 32.92 | 34.31 | 35.88 | 38.69 | 43.39 | 47.68 | 50.67 | 51.41 | 48.77 | 43.82 | 38.62 | 34.67 | 42.17 | |||||||||||||
S.D. | 3.96 | 2.79 | 2.61 | 2.37 | 2.63 | 2.23 | 3.03 | 2.35 | 2.19 | 2.29 | 2.68 | 2.86 | 1.27 | |||||||||||||
SKEW | -0.62 | -0.74 | 0.26 | 0.31 | -1.35 | -0.27 | -2.33 | -1.23 | -0.12 | -0.15 | 0.10 | -0.59 | 0.10 | |||||||||||||
MAX | 39.16 | 38.75 | 41.87 | 44.23 | 47.39 | 52.59 | 55.57 | 55.81 | 53.59 | 47.94 | 44.93 | 40.19 | 44.50 | |||||||||||||
MIN | 22.23 | 26.57 | 31.00 | 35.08 | 33.94 | 42.16 | 36.06 | 42.40 | 43.27 | 38.06 | 32.63 | 26.74 | 39.38 | |||||||||||||
YRS | 40 | 43 | 43 | 44 | 44 | 45 | 53 | 54 | 47 | 40 | 40 | 37 | 24 |