| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1901 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 76.00 | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1902 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1903 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1904 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1905 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1906 | ----- | z | ----- | z | ----- | z | ----- | z | 68.00 | z | ----- | z | ----- | z | 61.00 | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1907 | ----- | z | 20.00 | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1908 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1909 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1910 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1911 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1912 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1913 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1914 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1915 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1916 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1917 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1918 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1919 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1920 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1921 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1922 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1923 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1924 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1925 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1926 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1927 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1928 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1929 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1930 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1931 | 43.20 | a | 46.71 | 51.65 | 61.43 | 74.45 | 73.27 | 84.61 | 84.13 | 71.82 | b | 61.58 | 45.63 | 37.52 | 61.33 | |||||||||||
| 1932 | 37.89 | d | 40.28 | 47.87 | 59.67 | 66.17 | b | 77.77 | 76.90 | 78.42 | 77.80 | 62.77 | 51.43 | 38.81 | 59.65 | |||||||||||
| 1933 | 39.97 | 40.00 | d | 47.42 | 61.86 | b | 57.90 | 70.77 | 80.87 | 81.52 | 65.03 | 64.97 | 52.97 | 45.35 | 59.05 | |||||||||||
| 1934 | 47.55 | 52.61 | 62.74 | 70.60 | 68.77 | 73.27 | 77.87 | 83.06 | 71.33 | 63.26 | 49.83 | 42.03 | 63.58 | |||||||||||||
| 1935 | 39.10 | 49.89 | 50.06 | 63.47 | 72.46 | c | 77.20 | 80.87 | 79.69 | b | 79.07 | 61.26 | h | 45.27 | 38.58 | 61.42 | ||||||||||
| 1936 | 42.39 | 31.55 | 51.00 | 63.63 | 69.55 | 72.37 | 78.45 | 81.39 | 73.27 | 68.23 | 51.97 | 47.55 | 60.94 | |||||||||||||
| 1937 | 31.35 | 42.11 | 51.84 | 53.30 | 67.81 | 74.33 | 80.58 | 76.35 | 70.53 | 64.84 | 50.23 | 44.26 | 58.96 | |||||||||||||
| 1938 | 41.90 | 42.86 | 50.81 | 60.90 | 67.48 | 75.20 | 83.84 | 77.65 | 78.43 | 61.81 | 45.03 | 43.73 | a | 60.80 | ||||||||||||
| 1939 | 46.00 | 42.96 | 56.23 | 64.17 | a | 71.32 | 69.60 | 80.23 | 83.03 | 76.24 | a | 62.97 | a | 54.27 | 47.16 | 62.85 | ||||||||||
| 1940 | 41.65 | 45.34 | 58.10 | 59.13 | 71.74 | 78.07 | 77.84 | 81.74 | 73.03 | 61.74 | 43.93 | 42.32 | 61.22 | |||||||||||||
| 1941 | 39.94 | 49.82 | 60.39 | 64.73 | 65.35 | 69.60 | 83.23 | 76.39 | 66.17 | 59.94 | 51.90 | 42.97 | 60.87 | |||||||||||||
| 1942 | 33.06 | 44.61 | 53.61 | 62.10 | 64.81 | 71.00 | 80.65 | 82.29 | 78.10 | 66.03 | 43.67 | 41.23 | 60.10 | |||||||||||||
| 1943 | 33.84 | 44.89 | 47.61 | 61.63 | 64.42 | 70.33 | 81.26 | 76.74 | 79.55 | a | 60.77 | 48.60 | 41.23 | 59.24 | ||||||||||||
| 1944 | 39.94 | 44.93 | 52.00 | 57.53 | 67.65 | 72.40 | 81.97 | 77.19 | 76.70 | 66.81 | 45.47 | 36.16 | 59.90 | |||||||||||||
| 1945 | 42.00 | 45.50 | 46.55 | 54.77 | 65.97 | 71.47 | 82.68 | 81.29 | 70.80 | 63.71 | 43.37 | 38.13 | 58.85 | |||||||||||||
| 1946 | 42.19 | 43.43 | 49.65 | 58.86 | a | 68.61 | 67.77 | 77.58 | 79.97 | 70.80 | 55.26 | 46.47 | 41.52 | 58.51 | ||||||||||||
| 1947 | 39.07 | c | 49.89 | 56.71 | 62.30 | 74.29 | 68.93 | 75.74 | 75.81 | 74.03 | 56.87 | 47.23 | 41.77 | 60.22 | ||||||||||||
| 1948 | 41.26 | 42.24 | 47.23 | 52.47 | 62.63 | a | 75.90 | 76.74 | 74.03 | 70.67 | 60.26 | 44.47 | 35.87 | 56.98 | ||||||||||||
| 1949 | 30.74 | 38.89 | 47.20 | f | 61.97 | 69.87 | 73.03 | 76.65 | 77.03 | 73.60 | 56.29 | 53.43 | 40.13 | 59.24 | ||||||||||||
| 1950 | 25.55 | 37.00 | 43.81 | 53.50 | 64.65 | 70.70 | 79.81 | 81.65 | 75.13 | 55.03 | 45.33 | 43.16 | 56.28 | |||||||||||||
| 1951 | 36.61 | 43.54 | 45.19 | 63.60 | 66.23 | 75.83 | 80.55 | 80.03 | a | ----- | z | 57.87 | 46.59 | a | 37.13 | 57.56 | ||||||||||
| 1952 | 33.42 | 43.07 | 46.52 | 62.93 | 67.74 | 67.63 | 82.39 | 79.81 | 79.03 | 71.90 | 45.77 | 37.00 | 59.77 | |||||||||||||
| 1953 | 46.84 | 47.29 | 50.71 | 55.43 | 60.94 | 64.77 | 79.84 | 75.97 | 73.80 | 62.77 | 49.80 | 44.39 | 59.38 | |||||||||||||
| 1954 | 37.94 | 43.71 | 48.61 | 56.90 | 66.52 | 65.17 | 74.84 | 70.94 | 70.07 | 60.87 | 53.03 | 37.00 | s | 58.96 | ||||||||||||
| 1955 | 38.74 | 42.11 | 42.48 | f | 50.90 | 61.65 | 71.03 | 71.55 | 79.00 | 71.73 | 58.23 | 40.60 | 36.48 | 56.55 | ||||||||||||
| 1956 | 36.68 | 35.69 | 44.42 | 60.67 | 69.97 | 67.20 | 82.06 | 77.84 | 71.83 | 55.00 | 43.50 | 38.84 | 56.97 | |||||||||||||
| 1957 | 28.61 | 42.00 | 47.90 | 59.20 | 67.23 | 71.41 | c | 76.50 | a | 75.07 | a | 78.70 | 57.00 | 48.67 | 43.55 | 57.99 | ||||||||||
| 1958 | 40.87 | 49.04 | e | 49.80 | f | 54.97 | a | 75.77 | a | 74.96 | e | 82.17 | a | 85.65 | 73.24 | a | 62.33 | g | 46.88 | d | 43.94 | 62.75 | ||||
| 1959 | 40.19 | 40.44 | a | 49.67 | d | 57.76 | a | 62.27 | e | 70.24 | a | 84.14 | b | 79.00 | 70.64 | s | ----- | z | 45.48 | a | 38.74 | 56.79 | ||||
| 1960 | 33.82 | c | 43.78 | k | 47.38 | j | 56.37 | k | 61.36 | t | 76.44 | e | 87.03 | a | 75.83 | a | 71.79 | b | 60.72 | m | 46.83 | l | 38.84 | l | 68.98 | |
| 1961 | 42.62 | g | 46.17 | j | 50.26 | h | 56.25 | j | 65.21 | g | 81.20 | 83.81 | 87.23 | 68.50 | 58.08 | g | 45.10 | j | 39.09 | i | 80.18 | |||||
| 1962 | 39.81 | j | 45.39 | j | 48.71 | g | 61.77 | h | 58.90 | j | 76.29 | f | 80.47 | a | 76.45 | 73.14 | b | 61.35 | h | 49.47 | k | 43.53 | n | 76.69 | ||
| 1963 | 38.00 | j | 50.42 | i | 52.76 | j | 52.45 | h | 67.64 | i | 70.58 | d | 73.71 | 78.52 | 77.57 | 62.50 | g | 46.68 | h | 38.00 | j | 75.09 | ||||
| 1964 | 40.90 | j | 46.58 | j | 47.50 | i | 55.67 | i | 63.40 | k | 70.09 | h | 78.16 | 74.97 | 67.50 | 61.57 | h | 44.47 | k | 37.64 | i | 73.54 | ||||
| 1965 | 38.10 | k | ----- | z | 52.70 | h | 62.36 | h | 64.90 | k | 76.35 | g | 83.80 | a | 78.13 | a | 69.03 | 62.83 | g | 49.45 | j | 37.81 | j | 76.99 | ||
| 1966 | 36.00 | j | ----- | z | 46.13 | h | 57.75 | z | 73.29 | j | 72.85 | c | 81.52 | 83.77 | 78.17 | 62.80 | f | 49.16 | k | 41.82 | i | 79.08 | ||||
| 1967 | 43.65 | k | 48.62 | l | 46.82 | i | 55.65 | j | 70.09 | i | 82.23 | d | 86.52 | 92.61 | 82.38 | a | 60.67 | j | 49.00 | j | 38.35 | k | 85.93 | |||
| 1968 | 38.73 | i | 49.85 | b | 54.55 | 59.54 | b | 69.16 | 74.92 | d | 84.74 | 76.58 | 74.26 | g | 58.77 | i | 46.11 | k | 34.00 | j | 67.05 | |||||
| 1969 | 30.27 | i | 36.39 | j | 47.33 | m | 55.43 | 73.50 | a | 79.30 | 82.00 | 80.81 | 74.57 | 59.57 | c | 49.00 | 38.24 | f | 69.27 | |||||||
| 1970 | 37.40 | f | 48.29 | d | 52.67 | g | 53.00 | r | 73.35 | e | 81.10 | 85.79 | b | 85.97 | a | 70.31 | d | 59.19 | 46.63 | 36.32 | 65.22 | |||||
| 1971 | 37.97 | 43.54 | b | 44.35 | 57.62 | d | 68.26 | d | 67.07 | a | 84.00 | b | 88.23 | 73.07 | 58.52 | 45.27 | 37.00 | c | 58.74 | |||||||
| 1972 | 37.64 | c | 42.22 | b | 53.83 | a | 52.70 | c | 75.19 | 75.93 | b | 85.74 | 88.27 | e | 69.48 | e | 62.62 | g | 47.24 | i | 36.00 | k | 64.56 | |||
| 1973 | 37.65 | n | 48.79 | i | 51.39 | 61.55 | h | 72.60 | f | 73.28 | a | ----- | z | 76.89 | l | 75.04 | g | 60.40 | p | 42.86 | h | 40.69 | o | 62.33 | ||
| 1974 | 34.46 | e | 41.68 | 48.97 | 55.87 | 64.96 | e | 79.77 | 81.90 | 79.65 | k | 79.72 | a | 64.74 | 45.63 | 42.35 | 58.19 | |||||||||
| 1975 | 37.61 | 39.82 | 46.55 | 54.60 | 67.16 | 70.97 | 82.45 | 73.33 | a | 78.83 | 58.61 | 44.17 | 42.36 | c | 58.04 | |||||||||||
| 1976 | 41.81 | 41.52 | 45.81 | 56.77 | h | 73.55 | 74.90 | 81.20 | a | 75.94 | 77.37 | 66.13 | 49.83 | 41.85 | k | 62.80 | ||||||||||
| 1977 | 36.62 | e | 43.68 | 45.13 | 60.77 | 56.65 | 73.97 | a | 78.90 | 90.10 | j | ----- | z | ----- | z | ----- | z | ----- | z | 56.53 | ||||||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 38.29 | 43.59 | 50.26 | 59.08 | 67.79 | 73.08 | 80.74 | 79.76 | 73.86 | 61.36 | 47.47 | 40.86 | 59.59 | |||||||||||||
| S.D. | 4.87 | 4.30 | 4.65 | 4.28 | 4.61 | 4.22 | 3.44 | 4.47 | 4.13 | 4.08 | 3.41 | 3.31 | 1.75 | |||||||||||||
| SKEW | -0.47 | -0.27 | 0.87 | 0.17 | -0.30 | 0.22 | -0.44 | 0.70 | -0.02 | 0.41 | 0.36 | 0.14 | 0.27 | |||||||||||||
| MAX | 47.55 | 52.61 | 62.74 | 70.60 | 75.77 | 82.23 | 87.03 | 92.61 | 82.38 | 71.90 | 54.27 | 47.55 | 63.58 | |||||||||||||
| MIN | 25.55 | 31.55 | 43.81 | 50.90 | 56.65 | 64.77 | 71.55 | 70.94 | 65.03 | 55.00 | 40.60 | 35.87 | 56.28 | |||||||||||||
| NO YRS | 36 | 37 | 34 | 36 | 38 | 44 | 46 | 44 | 42 | 32 | 35 | 32 | 24 | |||||||||||||