YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1915 | ----- | z | 41.60 | m | 54.84 | 65.50 | d | 67.30 | d | 76.80 | 87.57 | q | 89.71 | 73.07 | 67.42 | 38.57 | ----- | z | 66.65 | d | ||||||
1916 | ----- | z | 37.52 | 48.58 | 60.37 | 65.06 | 75.75 | b | 79.10 | 83.06 | 77.90 | 62.19 | 44.05 | k | 28.90 | a | 61.84 | b | ||||||||
1917 | 30.71 | 35.50 | 42.55 | 54.67 | 66.45 | 74.57 | 87.45 | 87.06 | 74.90 | 65.39 | 46.90 | 38.77 | a | 58.74 | ||||||||||||
1918 | 35.04 | e | 36.29 | 49.71 | 63.90 | 66.87 | 80.77 | 85.45 | 79.39 | 83.20 | 64.00 | ----- | z | ----- | z | 64.46 | b | |||||||||
1919 | 39.38 | g | 36.71 | 48.23 | 61.67 | 70.87 | 75.03 | 86.71 | 82.32 | ----- | z | 49.19 | e | 41.20 | 26.76 | b | 57.87 | b | ||||||||
1920 | 28.13 | 40.38 | 50.29 | 58.17 | 66.61 | 73.83 | 88.39 | 84.86 | b | 72.13 | 57.97 | a | 46.73 | 37.84 | 58.78 | |||||||||||
1921 | 35.81 | 38.04 | 51.47 | a | 56.53 | 70.84 | 79.17 | 84.77 | 84.52 | 67.93 | 63.00 | 41.17 | 31.97 | 58.77 | ||||||||||||
1922 | 23.74 | 29.79 | 43.77 | 56.60 | 67.23 | 83.83 | 87.19 | 83.94 | 76.37 | 63.29 | 40.14 | a | 25.97 | b | 56.82 | |||||||||||
1923 | 36.32 | 31.54 | 49.71 | 60.43 | 68.00 | 73.97 | 86.52 | 84.55 | 77.40 | 62.53 | a | 43.53 | 35.68 | 59.18 | ||||||||||||
1924 | 27.71 | 46.72 | 51.94 | 61.87 | 78.68 | 78.73 | 88.39 | 83.29 | 76.33 | 60.68 | 41.40 | 29.97 | a | 60.48 | ||||||||||||
1925 | 35.52 | 43.79 | 52.97 | 64.93 | 73.71 | 81.17 | 91.19 | 84.32 | 74.13 | 61.52 | 44.10 | 38.65 | 62.17 | |||||||||||||
1926 | 31.68 | 45.79 | 60.13 | 65.36 | p | 71.22 | v | 80.93 | ----- | z | 82.21 | b | 65.53 | 59.45 | 45.30 | 33.29 | c | 56.03 | c | |||||||
1927 | 29.23 | a | 37.67 | a | 48.06 | 58.45 | a | 65.37 | a | 77.70 | 85.94 | 83.35 | 69.10 | 59.71 | 43.47 | 29.15 | d | 57.27 | ||||||||
1928 | 31.21 | c | 40.24 | 52.71 | 58.00 | 76.90 | 77.13 | 87.52 | 84.35 | 77.70 | 60.00 | a | 47.40 | 33.90 | 60.59 | |||||||||||
1929 | 21.52 | 29.25 | 52.23 | a | 57.83 | 72.03 | 75.97 | 86.97 | 88.10 | 72.57 | 65.29 | 43.90 | 33.19 | 58.24 | ||||||||||||
1930 | 18.80 | a | 43.25 | 53.81 | 68.07 | 70.67 | a | 75.73 | 87.32 | 88.10 | 75.10 | 58.26 | 45.17 | 31.29 | 59.63 | |||||||||||
1931 | 34.91 | h | 36.81 | a | 51.55 | b | 63.73 | 75.48 | 78.00 | 88.03 | 86.61 | 73.10 | a | 63.94 | 39.63 | 32.17 | a | 62.64 | a | |||||||
1932 | 27.84 | 35.34 | 45.87 | 59.40 | 70.74 | 82.17 | a | 81.43 | a | 84.23 | 76.82 | b | 60.35 | 48.10 | a | 30.62 | b | 58.58 | ||||||||
1933 | 35.00 | 31.46 | b | 46.90 | 61.07 | a | 64.32 | 77.40 | 85.13 | 85.27 | a | 70.57 | 63.97 | a | 42.37 | 40.30 | a | 58.65 | ||||||||
1934 | 39.19 | 43.57 | 55.40 | a | 71.80 | 74.00 | a | 79.73 | 86.19 | 88.03 | 69.33 | 61.19 | 47.87 | 34.30 | a | 62.55 | ||||||||||
1935 | 31.74 | 42.18 | 46.35 | 58.97 | a | 72.30 | a | 77.20 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 54.79 | f | ||||
1936 | 32.40 | a | 25.22 | b | 47.35 | 66.20 | 80.58 | 77.50 | 86.61 | 85.90 | 75.10 | 68.68 | 41.39 | b | 39.53 | a | 60.54 | |||||||||
1937 | 15.33 | a | 29.21 | 46.97 | 54.83 | a | ----- | z | 77.59 | a | 87.19 | 81.83 | a | 77.97 | 68.94 | 42.82 | b | 39.30 | a | 56.54 | a | |||||
1938 | 35.93 | a | 37.61 | 47.10 | 64.30 | 72.39 | 81.37 | 90.67 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 61.34 | e | |||||
1939 | 39.13 | 34.25 | 50.50 | a | 63.80 | 77.03 | a | 73.73 | 87.42 | 88.26 | 77.80 | 64.36 | c | 45.83 | 42.74 | 62.07 | ||||||||||
1940 | 33.13 | a | 38.79 | 54.32 | 61.80 | 74.97 | 83.33 | 88.10 | 88.58 | 79.20 | 64.56 | f | 38.79 | a | 36.52 | 61.59 | a | |||||||||
1941 | 35.23 | 43.79 | 59.81 | 65.37 | 68.97 | a | 75.87 | 90.55 | 83.39 | 66.50 | 63.19 | 53.00 | 44.74 | 62.53 | ||||||||||||
1942 | 31.71 | 40.00 | 52.29 | 63.76 | a | 65.55 | 74.67 | 88.29 | 87.97 | 80.77 | 66.48 | 40.69 | d | 34.52 | 60.56 | |||||||||||
1943 | 25.75 | c | 40.29 | 49.50 | c | 66.04 | b | 66.03 | a | 73.80 | 87.00 | 84.86 | c | 84.00 | 80.00 | t | 44.23 | 36.10 | b | 59.78 | a | |||||
1944 | 32.68 | f | 41.24 | d | 50.29 | c | 63.88 | d | 72.58 | 80.67 | 90.63 | a | 85.41 | b | 81.63 | c | 70.48 | 51.33 | x | 28.71 | g | 70.76 | c | |||
1945 | 35.61 | 42.86 | 49.03 | b | 58.60 | j | 73.83 | b | 77.67 | l | 90.56 | f | 91.25 | g | 74.07 | c | 66.71 | c | 42.87 | g | 36.14 | b | 54.04 | e | ||
1946 | 35.13 | 40.54 | 52.36 | c | 62.19 | i | 77.14 | c | 77.00 | n | 92.72 | b | 91.47 | a | 74.24 | m | 61.00 | k | 41.22 | c | 36.41 | d | 58.37 | d | ||
1947 | 31.89 | c | 44.58 | b | 57.85 | e | 63.96 | c | 78.82 | c | 77.00 | b | 88.57 | j | ----- | z | ----- | z | 61.37 | d | 44.54 | b | 35.10 | a | 55.01 | c |
1948 | 33.33 | d | 36.89 | b | 47.25 | g | 56.17 | f | 58.56 | m | 79.43 | 80.29 | c | 78.42 | 75.15 | c | 63.34 | b | 43.84 | e | 28.77 | 57.72 | c | |||
1949 | 20.48 | 36.21 | 52.66 | b | 67.43 | b | 75.46 | c | 81.45 | a | 86.61 | 86.71 | 79.20 | e | 59.23 | e | 50.90 | a | 35.62 | b | 61.00 | |||||
1950 | 17.77 | 36.57 | 47.40 | a | 57.82 | b | 67.60 | a | 77.07 | 87.53 | a | 88.00 | 81.13 | 56.86 | b | 44.33 | c | 36.46 | e | 58.21 | ||||||
1951 | 32.63 | d | 39.56 | a | 42.93 | c | 64.54 | b | 72.10 | a | 77.43 | 91.23 | a | 85.35 | 78.03 | 57.97 | b | 43.18 | b | 31.33 | d | 59.69 | ||||
1952 | 28.20 | f | 39.14 | 49.16 | 66.66 | a | 72.61 | 78.30 | 88.84 | 86.94 | 80.37 | 69.29 | 44.92 | e | 35.48 | d | 64.70 | a | ||||||||
1953 | 42.94 | 46.54 | 55.11 | d | 59.27 | 68.73 | a | 72.40 | 89.53 | n | 86.52 | d | 81.00 | 67.48 | b | 53.60 | e | 39.39 | h | 63.36 | b | |||||
1954 | 32.00 | a | 42.28 | c | 50.32 | c | 58.87 | 72.48 | b | 73.40 | 86.40 | a | 82.57 | a | 74.83 | a | 60.13 | h | 49.33 | 36.19 | e | 59.88 | a | |||
1955 | 32.32 | 36.12 | c | 42.97 | 55.71 | i | 65.38 | b | 80.40 | 82.06 | 87.45 | 78.10 | 59.97 | b | 35.97 | 30.74 | 57.41 | a | ||||||||
1956 | 33.13 | 30.96 | a | 45.81 | 65.60 | 75.35 | 75.00 | 89.43 | a | 85.42 | 77.23 | 59.52 | d | 36.31 | d | 35.57 | c | 59.11 | ||||||||
1957 | 20.65 | 35.17 | j | 49.45 | 62.79 | a | 74.58 | 79.50 | 84.71 | 81.84 | 81.80 | 57.61 | 45.20 | 38.87 | 61.55 | a | ||||||||||
1958 | 37.45 | 46.79 | 51.52 | 59.10 | 80.93 | b | 83.64 | b | 91.47 | a | 92.04 | d | 74.43 | g | 64.83 | b | 42.07 | 34.81 | 62.24 | a | ||||||
1959 | 33.52 | 36.43 | 51.23 | 63.27 | 67.16 | 79.65 | d | 90.65 | 84.10 | a | 71.20 | 58.80 | a | 42.33 | 34.61 | 59.41 | ||||||||||
1960 | 28.84 | 40.69 | 51.55 | 62.80 | 66.84 | 81.67 | 95.17 | a | 84.36 | c | 80.66 | a | 66.65 | 44.53 | 30.71 | 61.20 | ||||||||||
1961 | 36.52 | 44.21 | 52.03 | 60.21 | a | 69.63 | a | 87.21 | b | 90.77 | 93.43 | a | 74.28 | a | 60.83 | a | 40.17 | 34.03 | 61.94 | |||||||
1962 | 30.03 | 41.32 | 48.87 | 67.11 | b | 67.16 | 79.70 | 88.20 | a | 83.90 | 81.47 | 61.16 | 47.50 | 39.61 | 61.34 | |||||||||||
1963 | 31.61 | 45.00 | 54.77 | 58.67 | 71.97 | 79.80 | 84.42 | 88.87 | 85.30 | 67.39 | 46.27 | 32.42 | 62.21 | |||||||||||||
1964 | 36.00 | 41.14 | 49.32 | 61.20 | 70.67 | a | 78.15 | d | 87.74 | 81.67 | a | 74.93 | c | 65.80 | a | 43.86 | h | 30.67 | g | 64.66 | b | |||||
1965 | 34.76 | f | 42.19 | b | 50.58 | 64.38 | f | 70.31 | b | 81.23 | 89.19 | 86.26 | 73.89 | c | 66.69 | e | 48.20 | 37.77 | a | 64.63 | b | |||||
1966 | 33.10 | k | 41.68 | i | 51.87 | 63.13 | g | 78.15 | k | 76.46 | b | 83.25 | c | 87.58 | 82.44 | c | 63.06 | n | 48.48 | g | 39.00 | c | 70.10 | f | ||
1967 | 41.48 | f | 48.92 | b | 51.30 | d | 57.21 | f | 70.78 | d | 83.21 | a | 90.13 | a | 95.10 | a | 86.73 | 63.05 | j | 48.73 | h | 33.50 | e | 69.96 | d | |
1968 | 35.93 | a | 48.00 | 56.22 | d | 61.41 | h | 72.62 | j | 80.38 | d | 90.67 | a | 81.85 | d | 78.48 | a | 60.14 | b | 45.67 | 37.92 | f | 64.15 | c | ||
1969 | 22.23 | 35.29 | 48.67 | d | 62.29 | i | 75.56 | m | 86.17 | g | 87.40 | a | 86.53 | a | 79.59 | a | 61.70 | k | 49.83 | r | 36.63 | l | 59.95 | f | ||
1970 | 33.30 | k | 43.26 | i | 51.06 | m | 59.43 | i | 75.16 | l | 85.33 | f | 89.93 | d | 89.87 | a | 71.96 | c | 57.38 | r | 39.38 | n | 34.06 | 71.46 | h | |
1971 | 36.23 | a | 43.41 | a | 48.10 | ----- | z | 75.10 | a | 82.04 | e | 90.50 | a | 93.73 | a | ----- | z | 59.91 | t | 43.65 | d | 30.17 | a | 60.33 | c | |
1972 | 31.32 | 38.69 | 53.61 | 57.00 | 72.67 | a | 82.27 | h | 85.93 | b | 93.87 | a | 72.82 | b | 62.75 | k | 42.68 | b | 30.48 | j | 60.95 | c | ||||
1973 | 34.78 | h | 40.42 | d | 54.62 | e | 64.24 | i | 75.16 | f | 80.13 | 89.35 | 88.55 | 77.50 | b | 60.68 | i | 41.90 | i | 40.61 | m | 71.76 | f | |||
1974 | 34.30 | k | 44.71 | k | 52.71 | j | 61.79 | f | 68.13 | a | 84.11 | c | 84.61 | c | 88.39 | 81.57 | 67.30 | a | 47.40 | j | 39.65 | k | 79.02 | f | ||
1975 | 33.20 | k | 36.83 | j | 45.10 | j | 56.86 | h | 71.08 | f | 76.83 | 90.10 | 81.13 | 79.86 | a | 60.81 | 47.58 | d | 37.69 | e | 67.71 | e | ||||
1976 | 35.47 | a | 41.25 | a | 48.61 | h | 60.42 | f | 69.45 | b | 75.00 | e | 85.74 | 79.42 | 80.90 | 64.45 | b | 49.59 | h | 38.07 | p | 66.46 | d | |||
1977 | 28.80 | k | 45.63 | i | 53.09 | h | 70.67 | i | 68.00 | d | 82.59 | c | 86.31 | b | 91.42 | 72.18 | b | 63.06 | m | 47.87 | o | 39.00 | m | 80.10 | g | |
1978 | 35.00 | j | 39.58 | i | 54.04 | h | 60.73 | h | 68.43 | a | 81.63 | 87.87 | a | 82.87 | 71.48 | a | ----- | z | 41.27 | 33.08 | f | 72.26 | f | |||
1979 | 22.28 | b | 37.14 | 55.65 | e | 62.24 | a | ----- | z | 81.97 | 89.84 | 88.77 | 80.43 | 64.86 | c | 39.97 | 41.00 | c | 60.38 | a | ||||||
1980 | 30.25 | c | 36.76 | 49.07 | a | 65.76 | a | 68.63 | a | 73.37 | 86.10 | 83.81 | 75.80 | 67.67 | j | 49.41 | m | 36.72 | m | 63.28 | c | |||||
1981 | 41.50 | k | 44.35 | k | 56.64 | i | 61.64 | h | 68.39 | h | 72.28 | a | 82.71 | 91.58 | 78.50 | 59.77 | e | 49.10 | 36.07 | a | 67.14 | e | ||||
1982 | 31.93 | a | 42.31 | b | 52.70 | a | 57.83 | a | 69.78 | d | 82.17 | a | 82.90 | a | 85.45 | 76.10 | 62.07 | b | 42.36 | b | 36.52 | h | 62.33 | a | ||
1983 | 40.50 | m | 45.35 | h | 53.88 | f | 62.05 | j | 75.30 | h | 76.54 | b | 79.45 | 87.16 | 74.20 | 63.48 | 48.14 | b | 27.65 | h | 71.50 | f | ||||
1984 | 37.15 | k | 41.63 | j | 54.23 | i | 59.26 | k | 64.32 | f | 74.44 | c | 86.23 | a | 87.68 | 74.43 | b | 59.75 | c | 44.22 | c | 27.13 | h | 71.13 | f | |
1985 | 28.48 | j | 34.26 | i | 48.17 | m | 63.54 | b | 72.90 | b | 79.80 | 95.20 | a | 83.03 | 69.23 | 60.12 | e | 36.12 | m | 26.77 | r | 74.83 | e | |||
1986 | 36.18 | n | 38.84 | i | 55.39 | m | 62.25 | j | 69.38 | j | 84.56 | c | 81.83 | a | 92.21 | b | 71.85 | c | 65.64 | c | 48.00 | l | 34.32 | l | 79.22 | g |
1987 | 34.88 | o | 44.83 | j | 54.21 | g | 68.23 | h | 74.68 | l | 83.78 | c | 84.83 | a | 85.87 | a | 83.64 | b | 70.00 | f | 52.69 | q | 37.22 | m | 84.53 | h |
1988 | 34.00 | m | 48.44 | k | 54.61 | h | 66.32 | k | 71.35 | k | 78.79 | f | 89.19 | 89.55 | 81.42 | f | 67.67 | m | 48.25 | n | 35.50 | m | 89.37 | j | ||
1989 | 39.55 | k | 36.12 | l | 50.40 | k | 65.42 | k | 69.64 | i | 82.72 | a | 89.23 | a | 84.03 | b | 79.84 | e | 65.63 | l | 50.69 | q | 40.57 | x | 83.96 | h |
1990 | 42.17 | m | 39.94 | l | 56.84 | l | 68.95 | k | 69.59 | i | 75.31 | n | ----- | z | 90.29 | n | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1991 | 31.58 | s | 52.18 | q | 48.40 | p | 63.94 | m | 67.43 | j | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 31.06 | 39.23 | 50.70 | 61.95 | 71.11 | 78.70 | 87.35 | 86.17 | 76.54 | 62.70 | 44.12 | 34.87 | 60.01 | |||||||||||||
S.D. | 5.96 | 5.02 | 3.78 | 3.75 | 4.11 | 3.42 | 3.25 | 3.60 | 4.59 | 3.85 | 3.71 | 4.00 | 1.64 | |||||||||||||
SKEW | -0.83 | -0.47 | 0.11 | 0.12 | 0.46 | 0.07 | -0.28 | 0.35 | -0.17 | -0.47 | 0.26 | 0.00 | -0.02 | |||||||||||||
MAX | 42.94 | 48.92 | 60.13 | 71.80 | 80.93 | 87.21 | 95.20 | 95.10 | 86.73 | 70.48 | 53.60 | 44.74 | 62.55 | |||||||||||||
MIN | 15.33 | 25.22 | 42.55 | 54.67 | 64.32 | 72.28 | 79.10 | 78.42 | 65.53 | 49.19 | 35.97 | 25.97 | 56.82 | |||||||||||||
YRS | 52 | 59 | 60 | 50 | 58 | 69 | 69 | 71 | 67 | 56 | 54 | 51 | 27 |