YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1916 | ----- | z | ----- | z | ----- | z | 46.19 | l | 57.61 | 64.50 | 65.41 | d | 66.36 | q | 62.20 | 52.13 | 39.82 | 31.26 | 53.27 | e | ||||||
1917 | 29.93 | a | 36.39 | 36.12 | b | 42.88 | b | 46.73 | a | 66.38 | 73.69 | 69.28 | a | 65.53 | 56.97 | 46.81 | a | 42.19 | 51.08 | |||||||
1918 | 29.07 | a | 39.32 | 48.77 | 46.38 | 59.06 | 72.80 | 73.03 | a | 68.82 | 57.59 | a | 53.17 | b | 36.26 | a | 32.00 | b | 51.36 | |||||||
1919 | 29.23 | a | 30.30 | a | 36.89 | 47.18 | 55.65 | a | 61.93 | 69.45 | 69.98 | a | 64.18 | 50.10 | a | 39.41 | a | 34.40 | 49.06 | |||||||
1920 | 35.11 | 35.22 | 37.57 | h | 42.12 | b | 55.18 | a | 65.14 | b | 73.62 | f | 66.77 | 61.47 | 51.81 | 37.82 | 33.56 | 48.42 | b | |||||||
1921 | 35.90 | b | 34.86 | 44.08 | 44.10 | 55.82 | 61.87 | 67.77 | a | 69.28 | a | 65.12 | 58.03 | 45.48 | 41.50 | a | 51.98 | |||||||||
1922 | 28.35 | 33.06 | d | 37.61 | ----- | z | ----- | z | 70.78 | j | 72.64 | c | 72.87 | 65.77 | 53.50 | d | 39.34 | h | 37.33 | e | 50.14 | d | ||||
1923 | 34.23 | r | 32.55 | 33.40 | a | ----- | z | 55.29 | 65.16 | b | 70.47 | a | 65.02 | c | 59.40 | a | 44.37 | 39.71 | f | 30.35 | h | 53.21 | d | |||
1924 | 30.50 | b | 35.30 | b | 29.30 | c | 48.22 | 53.88 | a | 65.10 | a | 67.85 | 70.74 | d | 63.32 | 54.68 | 43.63 | 23.53 | n | 51.14 | a | |||||
1925 | 32.29 | e | 40.04 | a | 46.92 | 52.93 | 61.25 | a | 66.73 | 69.84 | 65.11 | 62.92 | 47.50 | 46.00 | y | 35.55 | c | 52.83 | a | |||||||
1926 | 28.98 | 41.07 | a | 35.64 | f | 42.52 | 49.50 | h | 60.48 | f | 65.82 | c | 67.82 | c | 67.11 | h | 45.25 | q | ----- | z | ----- | z | 49.24 | g | ||
1927 | 35.16 | b | 35.62 | b | 41.14 | b | 48.12 | e | 59.61 | c | 64.40 | 68.58 | a | 64.63 | a | 59.33 | 52.37 | d | ----- | z | ----- | z | 52.90 | b | ||
1928 | 35.70 | a | 33.59 | 42.24 | 44.47 | 56.02 | 58.15 | d | 63.16 | 64.40 | 60.53 | 51.56 | 33.40 | a | 28.85 | 47.67 | ||||||||||
1929 | 32.98 | 27.29 | g | 36.86 | b | 45.02 | 53.50 | 65.03 | 68.03 | a | 65.89 | 58.17 | 49.42 | 29.26 | a | 31.22 | b | 48.67 | a | |||||||
1930 | 22.65 | a | 39.02 | 32.68 | 49.48 | a | 51.24 | 64.38 | e | 67.88 | c | 65.44 | ----- | z | 50.65 | d | 39.47 | 27.98 | 46.44 | a | ||||||
1931 | 32.61 | 36.20 | 30.03 | b | 45.63 | c | 54.43 | a | 68.45 | 69.50 | a | 65.94 | 64.75 | 50.31 | 37.02 | 30.61 | 48.79 | |||||||||
1932 | 23.00 | 36.50 | 33.72 | a | 47.78 | 56.82 | a | 62.35 | 72.07 | a | 70.45 | 60.87 | 51.40 | 41.17 | 28.43 | b | 48.71 | |||||||||
1933 | 34.27 | a | 29.38 | 41.23 | 45.03 | 55.32 | 67.85 | 71.35 | 67.16 | 66.39 | b | 54.31 | 42.83 | 41.42 | 51.38 | |||||||||||
1934 | 34.92 | 37.68 | 43.13 | a | 50.18 | 61.52 | 69.22 | 73.87 | 71.63 | 61.03 | 55.02 | 39.83 | 32.82 | 52.57 | ||||||||||||
1935 | 36.03 | 34.46 | 41.17 | a | 46.37 | 48.22 | a | 64.98 | 71.79 | 67.27 | a | 57.92 | 47.59 | c | 38.07 | 31.45 | 48.78 | |||||||||
1936 | 28.38 | a | 30.97 | 37.25 | a | 45.36 | b | 55.00 | e | 67.62 | b | 70.69 | 70.72 | a | 58.02 | b | 47.11 | 37.13 | 34.88 | f | 49.84 | a | ||||
1937 | 24.47 | 33.29 | 36.27 | 47.50 | 58.70 | a | 66.93 | 72.10 | 73.40 | 64.40 | a | 52.61 | 39.64 | a | 32.17 | b | 50.12 | |||||||||
1938 | 31.81 | 34.35 | a | 41.23 | a | 48.88 | 55.24 | 64.61 | k | 69.77 | a | 72.37 | 62.98 | 54.72 | b | 35.21 | b | 34.45 | 49.18 | a | ||||||
1939 | 27.98 | 26.13 | a | 40.95 | a | 49.07 | 58.29 | 67.86 | a | 71.31 | 68.32 | 65.33 | a | 52.12 | a | 38.53 | 37.16 | 50.25 | ||||||||
1940 | 26.70 | c | 32.48 | a | 42.15 | 46.84 | a | 57.56 | g | 65.98 | 72.00 | 66.58 | a | 62.98 | 54.08 | a | 36.25 | 31.42 | 48.86 | a | ||||||
1941 | 30.88 | a | 36.89 | 35.68 | 44.00 | 55.75 | c | 60.53 | a | 66.97 | 67.16 | 59.13 | 49.84 | 40.38 | 33.17 | a | 48.37 | |||||||||
1942 | 30.23 | a | 28.31 | b | 36.02 | b | 47.50 | a | 56.15 | h | 62.84 | a | 66.79 | 67.16 | 59.76 | a | 48.70 | c | 44.25 | 34.97 | 47.87 | a | ||||
1943 | 31.62 | c | 36.96 | 35.71 | g | ----- | z | 54.98 | i | 65.93 | a | 70.68 | 69.77 | 59.78 | 49.35 | a | 36.95 | b | 29.61 | i | 52.63 | d | ||||
1944 | 28.95 | a | 32.40 | 36.35 | a | 40.22 | 55.08 | 64.21 | a | 67.75 | a | 68.63 | 60.88 | b | 51.27 | 38.25 | 29.24 | 47.77 | ||||||||
1945 | 28.87 | 35.50 | c | 38.52 | c | 41.39 | c | 56.17 | a | 60.42 | 68.22 | d | 67.69 | e | 58.21 | d | 51.02 | f | 38.87 | c | 25.89 | d | 47.25 | a | ||
1946 | 25.18 | f | 28.74 | e | 37.63 | h | 52.54 | d | 52.38 | a | 68.47 | a | 71.30 | f | 66.66 | c | 62.12 | b | 48.77 | a | 31.11 | l | 38.14 | f | 54.24 | e |
1947 | 28.87 | e | 28.26 | a | 33.65 | h | 41.26 | g | 54.23 | i | 61.02 | 68.66 | 67.04 | d | 60.76 | e | 51.52 | a | ----- | z | 24.39 | c | 48.81 | d | ||
1948 | 23.07 | c | 26.38 | e | 29.32 | f | 48.37 | 52.50 | i | 60.52 | 66.94 | 65.23 | 60.98 | h | ----- | z | ----- | z | ----- | z | 48.42 | f | ||||
1949 | 20.81 | b | 24.87 | i | ----- | z | ----- | z | ----- | z | 62.86 | e | 68.66 | 68.03 | 59.88 | i | 49.27 | a | 44.79 | i | 30.29 | 49.99 | f | |||
1950 | 33.16 | 34.89 | i | 35.42 | 46.90 | 54.17 | e | 66.75 | 65.71 | j | 64.60 | a | 59.39 | c | 58.45 | c | 41.83 | d | 37.33 | j | 51.19 | c | ||||
1951 | ----- | z | 33.71 | 37.26 | 44.86 | a | 53.62 | f | 61.73 | 70.85 | 68.97 | 62.97 | k | 50.06 | 34.62 | e | 31.60 | 48.19 | c | |||||||
1952 | 34.15 | 31.02 | 30.89 | c | 45.52 | 53.45 | c | 70.62 | a | 69.29 | c | 69.81 | 60.88 | 49.68 | 32.03 | 29.71 | 48.09 | |||||||||
1953 | 35.21 | c | 30.73 | b | 41.88 | a | 43.86 | a | 52.12 | a | 69.98 | 71.44 | 67.08 | 63.74 | a | 50.98 | 39.60 | 26.95 | b | 49.47 | ||||||
1954 | 33.56 | 38.89 | a | 35.02 | b | 51.87 | 53.92 | 67.27 | 73.45 | 68.45 | 66.12 | 52.69 | 41.58 | 33.40 | 51.35 | |||||||||||
1955 | 29.48 | 27.81 | b | 36.23 | 45.84 | a | 55.62 | b | 63.03 | a | 70.35 | 68.85 | 63.32 | 53.05 | a | 39.69 | a | 37.55 | 49.24 | |||||||
1956 | 35.28 | a | 28.10 | 39.71 | 46.23 | 61.33 | a | 70.07 | 69.34 | 68.29 | 66.35 | 54.71 | 36.08 | 34.13 | 50.80 | |||||||||||
1957 | 33.55 | 42.21 | 38.65 | 43.84 | a | 53.03 | 63.77 | 71.77 | 68.34 | 61.22 | 51.11 | 32.17 | 36.52 | 49.68 | ||||||||||||
1958 | 30.73 | 37.25 | 32.85 | 43.40 | 59.27 | 68.23 | 68.77 | 69.56 | 63.22 | 51.16 | 40.78 | 35.32 | 50.05 | |||||||||||||
1959 | 27.50 | 33.75 | 38.24 | 46.22 | 57.47 | 67.23 | 69.05 | 70.39 | 61.65 | 49.23 | 38.73 | 34.47 | a | 49.49 | ||||||||||||
1960 | 27.11 | 25.34 | 40.31 | 49.80 | 56.63 | 67.33 | 67.92 | 70.74 | 63.13 | 50.83 | a | 42.07 | 28.77 | a | 49.17 | |||||||||||
1961 | 28.94 | 33.11 | 38.69 | 45.95 | 58.23 | 66.35 | 68.24 | 67.44 | 58.22 | 49.85 | 36.07 | 28.95 | 48.34 | |||||||||||||
1962 | 26.27 | 37.89 | 35.63 | 50.13 | 59.42 | 63.12 | 68.85 | 71.02 | 63.07 | 53.81 | 41.02 | 34.66 | 50.41 | |||||||||||||
1963 | 24.81 | 35.00 | 40.50 | 51.97 | 59.95 | 67.87 | 73.84 | 68.74 | 64.60 | 56.61 | 43.23 | 30.45 | 51.46 | |||||||||||||
1964 | 30.24 | 24.57 | 35.48 | 46.18 | 58.48 | 67.28 | 74.02 | 68.85 | 62.13 | 51.42 | 39.75 | 31.27 | 49.14 | |||||||||||||
1965 | 34.34 | 31.25 | 30.90 | 50.35 | 56.32 | 61.98 | 69.48 | 66.08 | 58.33 | 51.53 | 44.38 | 35.94 | 49.24 | |||||||||||||
1966 | 26.39 | 28.98 | 42.39 | 48.72 | 59.55 | 65.65 | 72.71 | 66.97 | 62.10 | 49.79 | 43.77 | 31.37 | 49.86 | |||||||||||||
1967 | 33.19 | 33.55 | 45.48 | 51.50 | 54.53 | 63.65 | 67.89 | 64.84 | 58.38 | 52.85 | 41.00 | 26.85 | 49.48 | |||||||||||||
1968 | 32.15 | 34.64 | 38.35 | 45.07 | 54.24 | 67.28 | 68.11 | 66.40 | 60.38 | 52.65 | 36.85 | 32.69 | 49.07 | |||||||||||||
1969 | 37.89 | 34.16 | 30.02 | 49.08 | 57.45 | 60.68 | 69.84 | 69.39 | 62.48 | 45.69 | 38.13 | 33.26 | 49.01 | |||||||||||||
1970 | 30.63 | 37.41 | 34.37 | 43.83 | 57.87 | 63.98 | 70.55 | b | 70.26 | 60.48 | 45.47 | 39.78 | 35.53 | 49.18 | ||||||||||||
1971 | 33.08 | 31.89 | 41.77 | g | 46.80 | 54.44 | 67.13 | 69.77 | 66.10 | 58.98 | 49.85 | 40.93 | 31.79 | 50.07 | a | |||||||||||
1972 | 33.63 | 37.83 | 45.37 | 50.07 | a | 56.47 | 66.97 | 68.76 | 67.10 | 61.28 | 51.58 | 31.07 | 31.24 | 50.11 | ||||||||||||
1973 | 30.42 | 33.52 | 36.11 | 39.55 | 54.45 | c | 64.58 | 69.00 | b | 68.58 | 59.24 | a | 53.15 | 43.80 | 31.60 | 48.67 | ||||||||||
1974 | 29.23 | 34.79 | 44.97 | 47.18 | 61.29 | 65.38 | 70.47 | 65.68 | a | 58.03 | 52.44 | 39.28 | 28.66 | 49.78 | ||||||||||||
1975 | 29.87 | 30.38 | 37.60 | 44.38 | 53.89 | 62.57 | b | 67.44 | 69.24 | 58.41 | a | 54.48 | 36.35 | 34.85 | 48.29 | |||||||||||
1976 | 30.65 | 39.10 | 39.03 | 48.75 | 54.40 | a | 66.22 | 69.23 | 68.63 | 60.93 | 45.95 | 36.25 | 32.74 | 49.32 | ||||||||||||
1977 | 28.37 | 34.22 | a | 38.34 | b | 47.05 | a | 57.83 | a | 68.75 | 71.32 | a | 68.47 | 63.60 | 53.76 | 41.50 | 37.16 | 50.86 | ||||||||
1978 | 29.55 | 31.24 | a | 41.79 | 50.10 | 53.90 | a | 66.50 | 72.41 | b | 68.06 | 63.22 | 51.93 | h | 39.71 | a | 27.29 | 49.43 | a | |||||||
1979 | 21.65 | a | 32.25 | 38.50 | a | 47.85 | 54.85 | a | 62.84 | b | 69.77 | a | 67.15 | 63.33 | 53.76 | 33.68 | 35.98 | 48.47 | ||||||||
1980 | 29.52 | 36.41 | 38.31 | 44.58 | 52.38 | a | 69.28 | 74.89 | 70.32 | a | 63.47 | 50.22 | a | 39.33 | 41.40 | 50.84 | ||||||||||
1981 | 34.89 | 36.02 | 38.84 | 54.50 | 54.81 | 69.13 | 70.39 | 66.10 | 61.17 | 51.69 | 43.47 | 34.05 | 51.25 | |||||||||||||
1982 | 30.44 | 31.77 | 40.33 | a | 46.72 | 54.48 | a | 62.40 | 70.24 | b | 68.95 | a | 63.00 | a | 50.32 | 38.12 | 30.69 | 48.96 | ||||||||
1983 | 33.35 | 32.09 | 37.47 | b | 41.10 | 51.48 | b | 61.08 | 70.87 | a | 71.74 | 66.08 | 53.47 | 40.07 | 23.74 | 48.55 | ||||||||||
1984 | 28.34 | 33.47 | 36.10 | 43.18 | 58.79 | c | 65.03 | 69.82 | 68.71 | 62.20 | 45.45 | 40.03 | 36.06 | 48.93 | ||||||||||||
1985 | 25.55 | 31.66 | 40.81 | 49.32 | 56.61 | 66.22 | 70.12 | a | 69.61 | 59.32 | 50.10 | 39.85 | 30.84 | 49.17 | ||||||||||||
1986 | 38.40 | 36.23 | 45.82 | 50.18 | 55.70 | a | 63.90 | 69.13 | 68.00 | 61.52 | 48.52 | 38.17 | a | 31.48 | 50.59 | |||||||||||
1987 | 29.95 | 32.64 | 36.87 | 48.32 | 55.34 | 64.18 | 71.10 | 66.89 | 59.63 | 54.13 | 38.55 | 28.92 | 48.88 | |||||||||||||
1988 | 26.21 | 35.60 | 36.70 | a | 49.22 | a | 55.50 | 66.78 | 68.87 | 69.13 | 60.68 | 54.00 | 39.71 | b | 32.35 | 49.56 | ||||||||||
1989 | 34.27 | 28.93 | 46.48 | 50.88 | 58.34 | 62.86 | a | 70.39 | 67.50 | 61.27 | 51.10 | 43.14 | a | 28.89 | 50.34 | |||||||||||
1990 | 31.60 | 32.52 | a | 40.18 | 48.73 | 53.30 | a | 71.55 | 67.84 | 67.16 | 63.50 | 52.89 | 42.47 | a | 28.36 | b | 50.01 | |||||||||
1991 | 29.77 | 38.45 | 39.03 | 47.12 | 57.65 | a | 65.55 | 68.26 | 67.19 | 60.89 | b | 51.21 | 34.47 | 32.42 | 49.33 | |||||||||||
1992 | 31.74 | b | 36.09 | 41.15 | 52.69 | a | 57.27 | a | 61.65 | 67.61 | 66.23 | 62.82 | 53.73 | a | 32.35 | 29.81 | d | 49.43 | ||||||||
1993 | 32.65 | a | 31.35 | a | 40.53 | a | 47.24 | c | 54.48 | c | 65.54 | b | 71.00 | f | 65.70 | c | 60.21 | b | 49.68 | 33.79 | a | 32.85 | 46.73 | a | ||
1994 | 32.57 | a | 32.08 | d | 43.07 | d | 48.45 | b | 58.17 | a | 70.17 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 47.42 | f | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 30.53 | 33.61 | 38.59 | 47.06 | 55.89 | 65.39 | 69.81 | 68.11 | 61.68 | 51.45 | 38.91 | 32.41 | 49.66 | |||||||||||||
S.D. | 3.77 | 3.75 | 4.19 | 3.13 | 2.84 | 2.96 | 2.18 | 2.02 | 2.37 | 2.83 | 3.59 | 3.85 | 1.10 | |||||||||||||
SKEW | -0.40 | -0.19 | 0.02 | -0.08 | -0.38 | 0.04 | -0.02 | 0.32 | 0.16 | -0.13 | -0.38 | 0.38 | 0.55 | |||||||||||||
MAX | 38.40 | 42.21 | 48.77 | 54.50 | 61.52 | 72.80 | 74.89 | 73.40 | 66.39 | 58.45 | 46.81 | 42.19 | 52.57 | |||||||||||||
MIN | 20.81 | 24.57 | 29.30 | 39.55 | 46.73 | 58.15 | 63.16 | 64.40 | 57.59 | 44.37 | 29.26 | 23.74 | 47.67 | |||||||||||||
YRS | 75 | 75 | 70 | 73 | 70 | 76 | 74 | 77 | 73 | 74 | 69 | 69 | 53 |