YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1903 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 81.93 | p | 69.67 | 63.26 | 45.13 | 39.26 | 54.33 | h | ||||
1904 | 38.23 | a | 42.62 | 45.31 | o | 66.17 | 70.52 | 77.33 | 85.87 | 91.45 | b | 80.70 | ----- | z | ----- | z | ----- | z | 69.11 | d | ||||||
1905 | ----- | z | ----- | z | 58.58 | g | 69.70 | 73.16 | 79.37 | ----- | z | 94.47 | a | 78.80 | 53.65 | 41.03 | ----- | z | 70.02 | e | ||||||
1906 | ----- | z | ----- | z | ----- | z | 74.25 | b | ----- | z | ----- | z | 100.90 | 92.58 | 81.87 | 64.65 | 45.50 | 39.52 | 71.32 | e | ||||||
1907 | 31.45 | 44.54 | 52.87 | 64.17 | 76.52 | 75.97 | a | 90.90 | 84.97 | a | 79.80 | 77.20 | a | 51.31 | a | 37.61 | 63.94 | |||||||||
1908 | 39.23 | 43.79 | 52.10 | 67.93 | 67.81 | 76.90 | a | 95.13 | 91.84 | 80.82 | b | 62.16 | 51.90 | 37.48 | 63.92 | |||||||||||
1909 | 30.90 | b | 45.64 | 60.35 | 61.47 | 71.32 | 82.70 | 88.03 | a | 87.13 | 79.87 | 66.23 | 48.67 | 35.71 | 63.17 | |||||||||||
1910 | 35.97 | a | 38.71 | 62.00 | 72.25 | b | 75.84 | 81.67 | 92.68 | 85.68 | 79.03 | a | 68.00 | 46.38 | a | 40.58 | 64.90 | |||||||||
1911 | 37.77 | 42.61 | 59.90 | 64.77 | 65.90 | 79.66 | a | 90.93 | a | 87.16 | 74.93 | a | 63.32 | 42.93 | 36.45 | 62.20 | ||||||||||
1912 | 36.27 | a | 46.14 | a | 52.48 | 62.03 | 70.45 | 82.07 | 84.42 | 82.97 | 71.90 | 60.81 | 46.93 | 39.52 | 61.33 | |||||||||||
1913 | 33.70 | a | 37.21 | 46.61 | 63.27 | 70.65 | 78.07 | 85.06 | 87.32 | 81.37 | 58.14 | b | 46.23 | 36.93 | b | 60.38 | ||||||||||
1914 | 39.06 | 44.26 | a | 59.29 | 65.10 | 75.94 | 76.03 | 92.26 | 91.29 | 76.31 | a | 67.06 | 49.90 | 33.39 | 64.16 | |||||||||||
1915 | 36.03 | 48.61 | 60.03 | 69.37 | 68.42 | 76.03 | 85.29 | 96.71 | 77.43 | 65.55 | 44.17 | a | 38.87 | 63.88 | ||||||||||||
1916 | 27.71 | 43.34 | 54.77 | 63.21 | a | 66.74 | 77.40 | 83.81 | 87.84 | 77.00 | 62.06 | 43.00 | 33.71 | 60.05 | ||||||||||||
1917 | 34.97 | 41.50 | 45.58 | 58.43 | 70.46 | c | 77.93 | a | 93.47 | a | 92.77 | 81.90 | 64.32 | 52.30 | 43.19 | 63.07 | ||||||||||
1918 | 40.84 | 42.14 | 56.97 | 67.23 | 71.06 | 90.67 | 93.63 | a | 84.26 | 84.83 | 65.61 | c | 48.56 | c | 40.55 | k | 67.80 | a | ||||||||
1919 | 37.20 | p | 44.50 | j | 55.16 | f | 71.19 | i | 76.97 | 87.87 | 98.13 | 93.19 | 82.00 | g | 62.97 | 49.37 | 32.81 | 71.61 | e | |||||||
1920 | 37.16 | 53.17 | 55.87 | 60.72 | l | 75.81 | 81.77 | 100.52 | 94.90 | 85.36 | h | 59.96 | g | 51.00 | 41.40 | a | 65.73 | c | ||||||||
1921 | 40.65 | 46.50 | b | 59.82 | c | 64.60 | 76.74 | 89.10 | a | 94.23 | 95.84 | 77.10 | 72.48 | 51.23 | 42.71 | 67.58 | ||||||||||
1922 | 35.79 | b | 41.54 | d | 51.68 | 61.63 | 74.29 | 91.13 | 97.29 | 94.13 | 86.50 | 69.68 | 46.75 | b | 34.55 | 65.41 | ||||||||||
1923 | 43.81 | 40.61 | 55.77 | 67.43 | 74.32 | 76.12 | f | 94.90 | a | 94.55 | 85.10 | 67.52 | 50.53 | 40.97 | 65.05 | a | ||||||||||
1924 | 34.39 | 51.00 | a | 54.29 | 66.23 | 88.42 | 86.57 | 95.00 | 90.71 | 83.07 | 65.52 | 47.27 | 32.42 | 66.24 | ||||||||||||
1925 | 40.48 | 48.57 | 56.87 | a | 73.33 | 81.00 | 85.17 | 99.13 | 93.75 | c | 81.76 | a | 63.03 | 48.70 | 44.84 | 68.05 | ||||||||||
1926 | 39.19 | 51.68 | 62.03 | 75.93 | a | 76.61 | 89.59 | a | 98.83 | b | 92.72 | b | 74.23 | 64.66 | b | 50.61 | b | 39.43 | c | 67.96 | ||||||
1927 | 38.73 | a | 48.38 | b | 54.43 | a | 66.32 | b | 69.72 | b | 84.48 | a | 96.14 | b | 93.00 | a | 73.84 | e | 65.24 | f | 49.41 | c | 32.00 | 64.22 | a | |
1928 | 38.59 | d | 47.04 | c | 57.35 | h | 62.65 | d | 86.19 | d | 84.25 | b | 96.89 | c | 94.15 | d | 85.82 | b | 65.27 | a | 37.14 | a | 29.90 | 66.17 | a | |
1929 | 32.30 | a | 36.46 | 54.97 | 62.60 | 73.97 | 78.43 | 96.29 | 99.68 | 80.03 | 70.61 | 49.00 | 43.19 | 64.80 | ||||||||||||
1930 | 27.00 | 48.63 | a | 57.43 | a | 73.53 | 74.03 | 81.59 | a | 96.52 | 97.77 | 81.90 | 60.84 | 46.24 | a | 33.94 | 64.95 | |||||||||
1931 | 41.00 | a | 46.59 | a | 54.71 | 65.23 | 81.06 | 86.13 | 98.81 | 96.23 | 76.53 | 61.23 | 33.90 | t | 36.48 | 67.64 | a | |||||||||
1932 | 37.58 | 42.38 | 53.13 | 68.60 | 75.94 | 88.03 | 95.03 | 94.67 | d | 86.37 | 71.97 | 55.27 | 42.52 | h | 69.91 | a | ||||||||||
1933 | 43.45 | 39.73 | b | 57.32 | 68.04 | d | 70.61 | 84.17 | 97.81 | 95.77 | 79.27 | 68.77 | 52.57 | 45.03 | 66.88 | |||||||||||
1934 | 48.19 | 56.32 | 67.26 | 77.77 | 83.71 | 85.63 | 97.61 | 96.77 | 80.10 | 64.81 | 54.17 | a | 43.24 | b | 71.30 | |||||||||||
1935 | 39.27 | a | 48.82 | 50.61 | 63.03 | a | 78.39 | m | 84.18 | b | 93.94 | 91.58 | 87.37 | 65.86 | b | 44.33 | 39.32 | 64.39 | a | |||||||
1936 | 39.93 | a | 31.43 | a | 52.50 | a | 70.43 | 82.37 | d | 86.73 | d | 96.13 | 94.52 | 83.12 | f | 71.10 | 43.28 | a | 39.60 | a | 64.36 | a | ||||
1937 | 26.40 | f | 41.11 | 58.63 | d | 59.33 | 76.74 | 81.96 | b | 95.79 | b | 89.61 | 85.27 | 67.29 | 51.67 | 42.87 | a | 68.21 | a | |||||||
1938 | 42.48 | b | 48.77 | b | 54.20 | a | 66.13 | 75.93 | c | 87.82 | b | 96.53 | a | 91.03 | 89.70 | 65.32 | 45.33 | 39.97 | a | 66.94 | ||||||
1939 | 42.68 | 43.11 | a | 60.00 | f | 69.83 | 79.72 | b | 80.25 | b | 94.97 | a | 96.26 | 85.21 | a | 63.94 | 52.37 | 44.07 | a | 68.40 | a | |||||
1940 | 38.94 | 48.62 | 59.61 | 65.43 | 81.36 | f | 88.55 | a | 94.52 | 95.90 | 82.61 | b | 67.87 | a | 44.72 | a | 39.93 | d | 66.06 | a | ||||||
1941 | 42.39 | 52.00 | a | ----- | z | 69.45 | a | 73.33 | a | 79.82 | b | 94.55 | 88.90 | b | 70.17 | 62.71 | 51.39 | b | 43.85 | d | 66.23 | a | ||||
1942 | 36.52 | 44.81 | b | 55.65 | 69.47 | 68.58 | 76.03 | 91.94 | 93.10 | 81.57 | 67.74 | 46.40 | 41.26 | 64.42 | ||||||||||||
1943 | 36.68 | f | 49.36 | 52.10 | 66.03 | a | 68.03 | 74.37 | 89.74 | 85.71 | 84.00 | 66.17 | a | 48.63 | 39.06 | 65.75 | a | |||||||||
1944 | 40.19 | 43.26 | f | 50.19 | 64.73 | 74.52 | 79.80 | 91.16 | 87.87 | 82.07 | 71.23 | 47.50 | 41.66 | b | 66.45 | a | ||||||||||
1945 | 41.66 | b | 47.25 | 52.79 | b | 60.40 | 73.48 | 79.07 | 95.74 | 94.87 | 76.40 | 68.55 | 46.57 | 38.77 | 64.63 | |||||||||||
1946 | 41.97 | 48.00 | 57.55 | 70.03 | 78.65 | 80.03 | a | 92.00 | 94.68 | 80.20 | 60.87 | 47.17 | 40.94 | 66.01 | ||||||||||||
1947 | 37.33 | a | 49.57 | 59.97 | 68.37 | 82.58 | 80.07 | 94.03 | a | 89.81 | 79.03 | a | 63.16 | 45.53 | 41.55 | 65.92 | ||||||||||
1948 | 40.16 | 44.66 | 51.52 | 63.87 | 72.52 | 84.70 | 87.42 | 86.26 | 80.13 | 63.90 | 46.37 | 32.90 | 62.87 | |||||||||||||
1949 | 25.71 | 42.50 | 55.19 | 70.83 | 78.94 | 83.23 | 91.23 | 93.68 | 81.73 | 55.69 | e | 52.13 | 37.00 | a | 63.99 | |||||||||||
1950 | 27.97 | a | 41.54 | 50.35 | 63.23 | 73.55 | 80.23 | 91.00 | 91.42 | 81.97 | 65.06 | 50.80 | 47.00 | 63.68 | ||||||||||||
1951 | 39.94 | 47.11 | 55.13 | h | 70.71 | b | 75.89 | c | 80.33 | 95.29 | 90.29 | 82.00 | c | 58.38 | b | 48.69 | a | 39.27 | a | 66.17 | a | |||||
1952 | 37.70 | a | 47.91 | f | 53.74 | 73.70 | c | 76.23 | 80.86 | b | 93.71 | 91.45 | b | 86.66 | a | 74.68 | 47.90 | 42.00 | b | 68.97 | a | |||||
1953 | 45.77 | 49.81 | a | 57.63 | a | 64.07 | c | 71.84 | 77.80 | 93.97 | 91.23 | 85.97 | 69.03 | b | 50.69 | a | 43.87 | 66.81 | ||||||||
1954 | 40.20 | a | 52.48 | a | 54.32 | 64.20 | 77.42 | 78.63 | 90.94 | 84.68 | 80.50 | 64.35 | 54.21 | a | 41.72 | f | 67.45 | a | ||||||||
1955 | 39.71 | c | 44.86 | 48.03 | 59.53 | 70.45 | 83.83 | 88.06 | 94.61 | 80.59 | a | 64.93 | d | 40.00 | a | 38.43 | a | 62.75 | ||||||||
1956 | 38.26 | 40.86 | 53.29 | 70.59 | a | 76.40 | a | 80.40 | 94.61 | 89.68 | 82.82 | b | 63.83 | b | 48.30 | c | 43.13 | 65.18 | ||||||||
1957 | 30.55 | 48.12 | d | 54.87 | 65.38 | a | 73.81 | 85.41 | a | 92.00 | a | 89.00 | c | 87.61 | b | 62.80 | f | 47.15 | d | 42.00 | a | 65.08 | a | |||
1958 | 43.47 | a | 52.04 | a | 55.54 | c | 63.44 | c | 84.61 | 85.87 | 94.19 | 95.71 | 79.39 | b | 68.66 | b | 48.71 | b | 43.73 | a | 67.95 | |||||
1959 | 40.80 | a | 45.75 | 54.65 | 66.72 | a | 71.32 | 82.77 | 95.90 | a | 88.67 | a | 71.26 | g | 62.58 | 45.62 | a | 41.42 | 63.29 | a | ||||||
1960 | 35.26 | 44.59 | 58.64 | c | 65.73 | 71.87 | 84.73 | 98.23 | 85.68 | 84.00 | 65.32 | 49.90 | 38.97 | 65.24 | ||||||||||||
1961 | 40.74 | 47.14 | 55.87 | 63.47 | 74.55 | 91.70 | 96.45 | 99.52 | 76.37 | 62.00 | 45.85 | d | 38.52 | 66.01 | ||||||||||||
1962 | 36.90 | 46.29 | 52.90 | 70.07 | 69.10 | 83.20 | 90.71 | 88.65 | 82.97 | 62.35 | 51.24 | a | 43.16 | 64.79 | ||||||||||||
1963 | 33.52 | 48.25 | 57.58 | 62.77 | 77.84 | 80.90 | 90.26 | 93.77 | 88.63 | 69.26 | 49.27 | 39.87 | 65.99 | |||||||||||||
1964 | 40.68 | 47.52 | 52.48 | 62.50 | 74.03 | 81.17 | a | 90.90 | 84.61 | 76.07 | 65.13 | 46.27 | 36.27 | a | 63.14 | |||||||||||
1965 | 39.19 | 46.43 | 54.35 | 67.47 | 71.97 | 81.37 | 91.97 | a | 87.58 | 74.20 | 67.77 | 51.03 | 41.77 | 64.59 | ||||||||||||
1966 | 41.35 | 46.18 | 55.84 | 65.13 | 78.84 | 78.03 | 90.87 | 91.03 | 84.63 | 62.10 | 49.50 | 42.90 | a | 65.53 | ||||||||||||
1967 | 43.97 | a | 49.04 | 50.87 | 59.67 | 71.42 | 83.07 | 94.35 | 98.29 | 87.37 | 62.71 | 49.87 | 38.03 | 65.72 | ||||||||||||
1968 | 38.77 | 51.45 | 59.84 | 60.60 | 72.35 | 79.83 | 93.23 | 85.00 | 76.40 | 61.16 | 48.00 | 36.81 | 63.62 | |||||||||||||
1969 | 32.45 | 43.86 | 55.94 | 64.93 | 76.81 | 84.60 | 90.39 | 91.97 | 78.73 | 58.81 | 49.77 | 39.74 | 64.00 | |||||||||||||
1970 | 38.87 | 53.71 | 54.58 | 58.80 | 76.32 | 85.77 | 93.97 | 97.23 | 71.90 | 62.58 | 48.37 | 38.39 | 65.04 | |||||||||||||
1971 | 39.83 | a | 48.25 | 52.13 | 66.27 | 77.74 | 77.23 | 92.16 | 97.97 | 76.10 | 63.16 | 45.90 | 38.00 | 64.56 | ||||||||||||
1972 | 38.03 | 44.52 | 58.10 | 60.03 | 77.97 | 82.67 | 89.90 | 93.97 | 74.43 | 63.97 | 47.87 | 33.87 | 63.78 | |||||||||||||
1973 | 36.74 | 49.25 | 56.71 | 65.53 | 78.45 | 82.83 | 95.55 | 92.19 | 79.70 | 61.90 | a | 43.90 | 41.94 | 65.39 | ||||||||||||
1974 | 35.26 | 48.25 | 55.16 | 63.40 | 70.94 | 87.37 | 91.00 | 91.39 | 85.17 | 69.00 | 49.73 | 42.32 | 65.75 | |||||||||||||
1975 | 37.97 | a | 43.36 | 52.35 | 58.40 | 68.26 | 76.00 | 92.29 | 83.58 | 81.17 | 59.23 | 46.50 | 38.71 | 61.48 | ||||||||||||
1976 | 39.42 | 45.97 | 49.84 | 62.07 | 75.55 | 74.47 | 87.55 | 83.71 | 82.43 | 65.13 | 49.63 | 38.19 | 62.83 | |||||||||||||
1977 | 35.29 | 49.46 | 50.90 | 70.67 | 66.71 | 85.87 | 86.84 | 91.97 | 72.90 | 61.45 | 45.00 | 39.90 | 63.08 | |||||||||||||
1978 | 38.94 | 47.57 | 59.16 | 62.37 | 65.23 | 81.90 | 87.81 | 85.10 | 74.80 | 66.87 | 42.70 | 34.58 | 62.25 | |||||||||||||
1979 | 27.84 | 41.25 | 57.45 | 60.83 | 72.71 | 82.30 | 90.94 | 90.68 | 83.60 | 65.71 | 46.23 | 42.13 | 63.47 | |||||||||||||
1980 | 35.58 | 44.93 | 51.03 | 67.23 | 70.39 | 75.23 | 86.90 | 84.00 | 76.73 | 66.13 | 48.60 | 42.42 | 62.43 | |||||||||||||
1981 | 42.68 | 46.89 | 59.72 | b | ----- | z | ----- | z | ----- | z | 86.19 | 94.45 | 81.53 | ----- | z | ----- | z | 42.11 | l | 68.58 | f | |||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 37.85 | 45.98 | 55.19 | 65.87 | 74.46 | 82.12 | 92.90 | 91.40 | 80.41 | 64.95 | 47.94 | 39.39 | 64.60 | |||||||||||||
S.D. | 4.43 | 4.28 | 3.83 | 4.30 | 4.77 | 4.20 | 3.93 | 4.26 | 4.51 | 4.05 | 3.31 | 3.57 | 2.05 | |||||||||||||
SKEW | -0.72 | -0.49 | 0.17 | 0.47 | 0.51 | 0.23 | -0.33 | -0.23 | -0.25 | 0.21 | -0.47 | -0.48 | 0.43 | |||||||||||||
MAX | 48.19 | 56.32 | 67.26 | 77.77 | 88.42 | 91.70 | 100.90 | 99.68 | 89.70 | 77.20 | 55.27 | 47.00 | 71.30 | |||||||||||||
MIN | 25.71 | 31.43 | 45.58 | 58.40 | 65.23 | 74.37 | 83.81 | 82.97 | 69.67 | 53.65 | 37.14 | 29.90 | 60.05 | |||||||||||||
YRS | 73 | 73 | 70 | 75 | 74 | 75 | 77 | 78 | 75 | 74 | 76 | 73 | 53 |