YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1913 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 64.04 | s | 60.47 | 52.17 | a | 42.89 | 35.42 | 27.02 | 43.59 | g | ||||
1914 | 30.69 | 28.45 | 38.53 | 42.15 | 49.38 | a | 53.19 | a | 58.37 | a | 60.34 | b | 49.95 | 44.58 | 34.62 | 21.63 | 42.66 | |||||||||
1915 | 25.37 | 33.20 | 39.32 | 44.75 | 45.20 | a | 51.81 | d | 58.08 | 63.15 | 49.97 | 42.98 | h | 33.00 | 29.53 | 43.03 | a | |||||||||
1916 | 19.42 | 35.67 | 38.62 | b | 42.75 | 43.15 | 51.45 | 56.45 | 58.37 | 53.75 | 43.07 | a | 28.43 | 22.45 | c | 41.13 | ||||||||||
1917 | 17.06 | 27.43 | 26.95 | 37.45 | 43.98 | 52.38 | 63.60 | 61.65 | 54.05 | 45.73 | 37.32 | 34.47 | 41.84 | |||||||||||||
1918 | 32.18 | 29.21 | 37.27 | a | 39.95 | 44.60 | 60.17 | 57.84 | 56.90 | 57.32 | b | 47.50 | 31.90 | 25.63 | 43.37 | |||||||||||
1919 | 28.24 | 30.39 | 34.10 | 41.05 | a | 48.98 | b | 52.38 | 63.24 | 61.23 | 51.62 | 38.45 | 32.26 | a | 23.43 | b | 42.11 | |||||||||
1920 | 29.02 | 31.72 | 33.13 | 37.62 | 45.23 | 53.69 | a | 60.06 | 61.42 | a | 52.48 | 40.89 | 32.79 | a | 28.16 | b | 42.18 | |||||||||
1921 | 27.26 | 30.61 | 38.00 | 39.50 | 46.08 | 54.63 | 59.74 | 58.11 | 48.42 | 47.18 | a | 36.68 | 26.55 | 42.73 | ||||||||||||
1922 | 16.55 | a | 24.98 | 29.40 | 35.83 | 47.31 | b | 57.43 | 61.93 | a | 57.77 | a | 54.04 | b | 45.42 | e | 31.70 | 26.57 | a | 40.74 | ||||||
1923 | 26.95 | 26.26 | a | 34.87 | 40.82 | 47.82 | 53.20 | h | 61.24 | 59.66 | 54.95 | 43.08 | 34.43 | g | 24.48 | 42.01 | b | |||||||||
1924 | 23.18 | 34.23 | a | 31.88 | g | 42.80 | 53.31 | 56.02 | 60.26 | 59.06 | 51.95 | 42.34 | 35.10 | 20.88 | a | 43.56 | a | |||||||||
1925 | 30.97 | 34.29 | 37.61 | 42.93 | 50.61 | 54.82 | 63.48 | 57.52 | 48.91 | b | 42.53 | a | 34.60 | 30.60 | a | 44.07 | ||||||||||
1926 | 28.95 | 35.91 | 41.52 | a | 45.06 | e | 48.24 | 58.55 | 62.27 | 58.52 | b | 46.98 | 44.89 | 39.93 | 28.20 | a | 44.92 | |||||||||
1927 | 30.13 | a | 30.42 | b | 35.66 | 39.66 | a | 44.23 | 55.65 | g | 59.31 | e | 56.83 | d | 50.20 | e | 43.60 | e | 37.42 | j | 22.25 | e | 41.23 | b | ||
1928 | 29.83 | a | 31.16 | 38.98 | 40.44 | c | 52.73 | 52.02 | 61.44 | 57.34 | 51.72 | a | 43.29 | 34.70 | 25.66 | 43.28 | ||||||||||
1929 | 23.48 | a | 26.29 | 35.87 | a | 37.37 | 47.42 | a | 52.78 | 60.60 | a | 61.47 | 50.35 | 46.12 | e | 34.83 | 35.20 | c | 42.65 | |||||||
1930 | 19.31 | 35.39 | 38.53 | 44.98 | 45.37 | 54.32 | 62.45 | 60.61 | 52.87 | 45.26 | 33.03 | 24.58 | 43.06 | |||||||||||||
1931 | 27.84 | 33.50 | 38.47 | 44.73 | 54.11 | 55.08 | 65.87 | 62.47 | 51.80 | 44.19 | 30.05 | 24.98 | 44.43 | |||||||||||||
1932 | 22.10 | 24.88 | 38.15 | 40.83 | 48.27 | 57.27 | 58.74 | 57.63 | 56.35 | 45.40 | 38.47 | 22.08 | 42.51 | |||||||||||||
1933 | 22.48 | 21.30 | 34.95 | 41.02 | 42.34 | 55.58 | 62.98 | 61.53 | 50.85 | 48.35 | 36.52 | 33.60 | 42.63 | |||||||||||||
1934 | 34.82 | ----- | z | ----- | z | 44.80 | y | 52.40 | 54.28 | 60.76 | 63.16 | 52.98 | 44.87 | 37.05 | 29.48 | 47.76 | c | |||||||||
1935 | 25.60 | 30.89 | 31.58 | a | 42.10 | 47.44 | 53.72 | 59.28 | a | 60.47 | a | 55.67 | a | 41.93 | a | 31.15 | 30.32 | a | 42.51 | |||||||
1936 | 29.53 | a | 32.00 | 38.15 | g | 44.10 | 53.24 | 56.85 | 61.58 | a | 62.11 | 52.38 | 46.61 | c | 32.68 | 27.34 | 45.31 | a | ||||||||
1937 | 12.79 | 26.38 | 35.42 | 39.43 | 50.27 | a | 54.26 | a | 60.55 | 57.71 | 53.88 | 47.02 | 37.60 | 32.66 | 42.33 | |||||||||||
1938 | 30.74 | 29.16 | 33.90 | 43.58 | 49.38 | a | 55.29 | d | 63.26 | 58.40 | 56.86 | e | 44.03 | a | 31.03 | a | 29.44 | 43.76 | ||||||||
1939 | 26.10 | a | 27.96 | e | 36.77 | a | 46.23 | 50.02 | 53.13 | 62.11 | 62.61 | 53.93 | 44.35 | 34.83 | a | 32.95 | 44.25 | |||||||||
1940 | 31.77 | 34.57 | a | 39.38 | c | 43.28 | a | 52.68 | a | 59.58 | 59.75 | c | 62.95 | 53.14 | i | ----- | z | ----- | z | ----- | z | 48.00 | d | |||
1941 | 29.35 | n | 34.98 | 41.74 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 44.71 | 40.21 | b | 34.46 | d | 39.22 | g | |||
1942 | 29.29 | 30.89 | 37.71 | 42.77 | 47.44 | 54.48 | 63.56 | 63.73 | 56.30 | 48.58 | 36.90 | 33.08 | 45.39 | |||||||||||||
1943 | 29.68 | 34.94 | a | 38.77 | 46.60 | 49.02 | 53.15 | 63.81 | d | 60.92 | f | 60.74 | a | 45.60 | a | 39.79 | d | 31.77 | a | 44.90 | a | |||||
1944 | 26.00 | 32.00 | 37.24 | 41.22 | 50.44 | 58.55 | a | 63.07 | a | 60.30 | d | 56.18 | 50.39 | 35.15 | 31.89 | 45.20 | ||||||||||
1945 | 31.96 | g | 35.64 | 36.08 | 42.87 | 50.66 | 56.36 | a | 65.31 | 63.81 | 54.45 | 52.31 | g | 34.77 | 30.83 | a | 47.08 | b | ||||||||
1946 | 27.71 | 30.93 | a | 37.35 | a | 45.43 | a | 50.44 | 52.55 | 62.89 | 62.94 | 52.77 | 41.23 | 36.22 | 33.39 | 44.49 | ||||||||||
1947 | 28.58 | a | 38.50 | a | 42.05 | a | 45.67 | 54.18 | 52.72 | c | 60.52 | 58.21 | 54.83 | c | 47.26 | b | 35.38 | 31.44 | 45.78 | |||||||
1948 | 32.84 | 29.34 | 33.32 | 38.22 | 46.77 | 57.88 | a | 59.61 | 58.25 | a | 52.98 | c | 50.85 | r | 34.10 | ----- | z | 44.33 | b | |||||||
1949 | ----- | z | 31.17 | j | 36.24 | 43.95 | i | ----- | z | 57.00 | 60.68 | f | 59.61 | c | 55.93 | 44.95 | b | 43.83 | 28.18 | l | 49.59 | f | ||||
1950 | 22.67 | b | 33.54 | 35.69 | ----- | z | 50.48 | 55.58 | 65.06 | g | 63.34 | 51.29 | a | 43.69 | 35.59 | h | 32.34 | 43.18 | c | |||||||
1951 | 24.05 | a | ----- | z | ----- | z | 43.47 | 48.74 | 56.75 | l | 64.37 | l | 62.85 | k | 58.45 | h | 43.78 | d | ----- | z | ----- | z | 40.01 | h | ||
1952 | 24.95 | b | 29.64 | a | 31.83 | b | 45.82 | 50.96 | f | 55.09 | a | 70.12 | e | 68.13 | e | 64.76 | i | 50.93 | d | 30.39 | g | 22.82 | k | 47.06 | d | |
1953 | 30.62 | e | 31.95 | 36.05 | 41.81 | a | 44.30 | a | 51.86 | h | 63.52 | g | 58.93 | d | 59.40 | 45.65 | a | 39.98 | 32.65 | 42.13 | b | |||||
1954 | 30.17 | a | 35.52 | 33.95 | 45.13 | c | 51.71 | c | 52.62 | 63.26 | b | 56.31 | 50.57 | a | 43.00 | b | 38.95 | 28.11 | 44.11 | |||||||
1955 | 24.90 | 27.23 | 33.87 | 37.53 | a | 46.47 | a | 56.28 | 58.58 | 61.83 | b | 53.48 | a | 46.87 | 33.19 | a | 29.33 | d | 42.46 | |||||||
1956 | 33.23 | g | 28.34 | m | 34.76 | 44.67 | a | 52.02 | a | 53.46 | e | 61.66 | 57.63 | 52.78 | c | 42.27 | 33.45 | k | 30.88 | b | 47.79 | c | ||||
1957 | 17.26 | 28.74 | e | 37.69 | b | 41.92 | 49.68 | 56.32 | 58.39 | 56.42 | g | 55.52 | 43.26 | d | 32.44 | d | 31.56 | 41.16 | a | |||||||
1958 | 29.79 | 37.35 | a | 33.74 | 40.62 | 52.53 | b | 56.04 | g | 62.69 | 62.54 | c | 51.35 | 47.27 | 37.21 | b | 34.63 | 44.52 | a | |||||||
1959 | 30.12 | c | 31.09 | 37.27 | 44.22 | 44.61 | d | 54.95 | 62.27 | 57.73 | 50.15 | 44.02 | f | 34.71 | b | 26.12 | a | 43.02 | a | |||||||
1960 | 26.00 | 29.24 | 39.26 | 40.47 | 43.69 | e | 56.79 | b | 64.95 | 57.63 | a | 55.80 | 46.21 | c | 34.53 | 30.06 | 43.72 | |||||||||
1961 | 31.79 | 34.36 | 35.74 | 41.30 | 45.47 | 59.20 | 61.84 | 62.90 | 50.47 | 43.74 | d | 33.38 | 27.31 | 43.96 | ||||||||||||
1962 | 22.10 | 30.36 | 33.53 | 44.12 | 44.32 | 53.63 | 58.55 | 58.18 | 56.25 | b | 45.90 | b | 37.67 | 32.35 | 43.08 | |||||||||||
1963 | 25.73 | 38.71 | 35.40 | 36.07 | 50.53 | b | 52.97 | a | 55.48 | f | 58.65 | 56.65 | 44.63 | 34.54 | e | 29.85 | 42.16 | a | ||||||||
1964 | 25.50 | b | 25.52 | 30.94 | 38.50 | 44.61 | 52.17 | d | 60.20 | d | 56.73 | 49.18 | 48.68 | c | 32.62 | 30.73 | 41.28 | |||||||||
1965 | 29.86 | b | 32.55 | 36.11 | 42.80 | 45.55 | 54.12 | 59.35 | 58.63 | 49.82 | 49.23 | k | 38.03 | 25.35 | 42.93 | a | ||||||||||
1966 | 26.84 | 28.16 | 37.03 | a | 42.03 | m | 52.71 | g | 53.02 | f | 57.74 | b | 61.22 | d | 54.43 | i | 43.81 | j | 36.38 | i | 31.37 | h | 42.20 | g | ||
1967 | 30.50 | i | 32.20 | h | 34.16 | i | 34.28 | g | 48.48 | c | 54.29 | k | 61.58 | k | 64.24 | h | 57.53 | l | 42.94 | n | 37.13 | c | 21.46 | g | 42.81 | j |
1968 | 25.62 | a | 37.04 | d | ----- | z | 39.55 | b | 46.38 | g | 54.13 | d | 62.29 | n | ----- | z | 55.86 | p | 43.85 | d | 33.61 | b | ----- | z | 38.97 | f |
1969 | ----- | z | 27.24 | e | 32.89 | d | 40.43 | b | 51.88 | f | 55.90 | a | 60.82 | l | 57.17 | k | 55.04 | d | 39.96 | f | 37.38 | n | 31.48 | c | 40.50 | f |
1970 | 30.03 | 35.29 | 35.68 | a | 35.24 | a | 48.63 | 58.15 | 62.16 | 60.60 | 49.32 | 42.52 | 38.42 | d | 27.31 | e | 43.61 | |||||||||
1971 | 28.45 | a | 32.17 | a | 31.15 | 38.90 | 46.42 | 51.82 | h | 62.21 | 63.10 | 49.75 | 41.56 | 35.88 | n | 24.22 | h | 43.74 | c | |||||||
1972 | 26.07 | b | 32.78 | 40.24 | 38.05 | 49.87 | 57.58 | 61.90 | 63.55 | i | 47.83 | o | 44.13 | 34.77 | ----- | z | 42.82 | c | ||||||||
1973 | 27.33 | d | 34.15 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 44.42 | a | 35.50 | 32.95 | k | 35.35 | h | |
1974 | 24.24 | 30.04 | 35.50 | a | 39.15 | 45.97 | 58.54 | f | 60.91 | i | 61.53 | p | 55.13 | k | 45.21 | 36.83 | 33.63 | p | 36.71 | e | ||||||
1975 | 26.31 | g | 27.89 | a | 32.24 | 34.50 | 46.98 | 53.50 | 60.86 | j | 57.20 | f | 56.50 | 43.08 | 32.98 | 32.39 | m | 40.96 | d | |||||||
1976 | 31.40 | g | 32.03 | 32.35 | 37.85 | 47.42 | 50.69 | c | 60.90 | 56.38 | k | ----- | z | 47.44 | 40.67 | 27.95 | a | 41.92 | c | |||||||
1977 | 23.29 | c | ----- | z | ----- | z | 42.25 | 42.65 | 59.82 | e | ----- | z | ----- | z | 47.30 | y | 44.63 | l | 37.52 | g | ----- | z | 42.00 | h | ||
1978 | ----- | z | 34.32 | i | 39.07 | p | 39.31 | l | 43.50 | o | 54.97 | n | 61.71 | q | 60.43 | i | 49.29 | k | 47.58 | k | 29.65 | q | 21.68 | k | ----- | z |
1979 | 25.21 | l | 31.69 | l | 37.82 | q | 40.20 | j | 50.10 | j | 54.33 | j | 59.59 | o | 57.21 | l | 56.25 | t | 44.23 | k | 32.43 | 29.88 | f | 32.43 | k | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 26.50 | 31.31 | 35.90 | 41.36 | 48.14 | 55.02 | 61.39 | 60.20 | 53.09 | 44.81 | 35.30 | 28.92 | 43.23 | |||||||||||||
S.D. | 4.46 | 3.72 | 3.06 | 3.01 | 3.14 | 2.36 | 2.45 | 2.49 | 2.92 | 2.36 | 2.97 | 3.79 | 1.25 | |||||||||||||
SKEW | -0.88 | -0.19 | -0.38 | -0.28 | 0.11 | 0.41 | 0.72 | 0.57 | 0.27 | 0.22 | 0.35 | -0.36 | 0.09 | |||||||||||||
MAX | 34.82 | 38.71 | 42.05 | 46.60 | 54.18 | 60.17 | 70.12 | 68.13 | 60.74 | 50.93 | 43.83 | 35.20 | 45.78 | |||||||||||||
MIN | 12.79 | 21.30 | 26.95 | 34.50 | 42.34 | 50.69 | 56.45 | 56.31 | 46.98 | 38.45 | 28.43 | 20.88 | 40.74 | |||||||||||||
YRS | 56 | 58 | 56 | 57 | 57 | 53 | 51 | 52 | 53 | 55 | 55 | 51 | 31 |