| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1928 | 47.52 | 55.93 | 60.19 | 61.87 | 80.32 | 78.20 | 90.81 | 89.65 | 81.70 | 65.97 | 53.77 | 44.55 | 67.54 | |||||||||||||
| 1929 | 42.42 | 51.68 | 58.61 | 59.67 | 75.19 | 78.63 | 89.29 | 90.94 | 81.83 | 71.71 | 59.80 | 49.13 | 67.41 | |||||||||||||
| 1930 | 38.77 | 53.36 | 63.55 | 67.30 | 67.23 | 80.80 | 89.03 | 88.58 | 78.23 | 69.29 | 56.03 | 44.45 | 66.39 | |||||||||||||
| 1931 | 48.19 | 56.39 | 59.81 | 69.53 | 80.81 | 76.83 | 92.94 | 91.81 | 79.00 | 69.23 | 50.60 | 45.94 | 68.42 | |||||||||||||
| 1932 | 41.39 | 51.79 | 58.52 | 62.43 | 70.58 | 83.17 | 84.97 | 86.42 | 88.60 | 70.94 | 53.87 | 42.16 | 66.24 | |||||||||||||
| 1933 | 41.84 | 47.00 | 57.13 | 66.30 | 63.13 | 78.43 | 91.13 | 91.90 | 76.27 | 75.39 | 55.23 | 48.87 | 66.05 | |||||||||||||
| 1934 | 48.23 | 57.54 | 69.71 | 73.60 | 74.26 | 79.63 | 88.03 | 92.45 | 84.10 | 69.84 | 54.97 | 47.61 | 70.00 | |||||||||||||
| 1935 | 42.61 | 53.86 | 54.55 | 64.07 | 73.97 | 81.90 | 85.97 | 90.87 | 88.80 | 66.00 | 48.67 | 44.84 | 66.34 | |||||||||||||
| 1936 | 46.74 | 51.45 | 59.32 | 69.37 | 76.35 | 79.47 | 86.58 | 89.52 | 83.63 | 77.77 | 60.50 | 42.45 | 68.60 | |||||||||||||
| 1937 | 35.58 | 48.75 | 58.00 | 61.03 | 73.68 | 78.83 | 89.29 | 87.55 | 82.23 | 70.42 | 55.67 | 46.48 | 65.63 | |||||||||||||
| 1938 | 44.10 | 50.00 | 53.94 | 64.23 | 75.26 | 84.53 | 93.94 | 88.61 | 85.00 | 67.55 | 51.97 | 46.55 | 67.14 | |||||||||||||
| 1939 | 44.16 | 47.57 | 63.84 | 72.87 | 74.94 | 78.93 | 90.42 | 93.03 | 83.50 | 68.19 | 58.50 | 49.42 | 68.78 | |||||||||||||
| 1940 | 50.84 | 51.93 | 61.58 | 66.37 | 77.52 | 86.97 | 86.58 | 92.13 | 76.83 | 67.61 | 51.00 | 47.74 | 68.09 | |||||||||||||
| 1941 | 49.94 | 57.25 | 65.16 | 65.83 | 72.39 | 75.23 | 91.16 | 84.32 | 76.17 | 65.23 | 57.83 | 45.35 | 67.16 | |||||||||||||
| 1942 | 47.84 | 51.96 | 58.81 | 65.10 | 67.03 | 77.23 | 89.19 | 91.94 | 84.47 | 71.39 | 52.37 | 44.13 | 66.79 | |||||||||||||
| 1943 | 40.81 | 57.07 | 61.29 | 66.13 | 71.19 | 75.13 | 89.39 | 84.32 | 90.60 | 66.90 | 54.00 | 45.77 | 66.88 | |||||||||||||
| 1944 | 47.68 | 51.34 | 59.19 | 60.33 | 72.84 | 75.83 | 88.52 | 87.39 | 84.93 | 73.94 | 52.67 | 47.23 | 66.82 | |||||||||||||
| 1945 | 48.52 | 52.96 | 54.35 | 64.90 | 71.52 | 81.27 | 92.52 | 90.65 | 83.40 | 71.77 | 52.17 | 47.84 | 67.65 | |||||||||||||
| 1946 | 44.42 | 50.89 | 55.16 | 67.00 | 77.13 | 76.20 | 88.58 | 90.84 | 80.47 | 62.32 | 52.87 | 45.65 | 65.96 | |||||||||||||
| 1947 | 43.87 | 56.54 | 63.45 | 69.07 | 78.42 | 75.13 | 81.94 | 83.71 | 84.10 | 66.94 | 51.80 | 44.26 | 66.60 | |||||||||||||
| 1948 | 47.00 | 49.10 | 53.94 | 56.97 | 67.10 | 79.53 | 84.48 | 83.39 | 78.63 | 69.00 | 51.90 | 42.58 | 63.64 | |||||||||||||
| 1949 | 40.71 | 48.68 | 57.06 | 71.27 | 73.84 | 83.63 | 88.29 | 85.52 | 82.53 | 64.29 | 56.83 | 44.13 | 66.40 | |||||||||||||
| 1950 | 39.48 | 52.39 | 54.87 | 64.07 | 74.52 | 77.67 | 90.39 | 91.16 | 81.03 | 64.87 | 54.93 | 48.65 | 66.17 | |||||||||||||
| 1951 | 45.77 | 51.39 | 56.42 | 73.40 | 73.13 | 86.57 | 90.32 | 89.42 | 86.70 | 64.65 | 53.87 | 41.16 | 67.73 | |||||||||||||
| 1952 | 41.39 | 48.90 | 52.23 | 70.23 | 73.90 | 75.07 | 93.35 | 88.55 | 87.03 | 76.97 | 50.83 | 44.35 | 66.90 | |||||||||||||
| 1953 | 48.58 | 52.82 | 56.97 | 64.03 | 64.61 | 71.93 | 89.48 | 84.00 | 85.40 | 66.87 | 56.63 | 44.48 | 65.49 | |||||||||||||
| 1954 | 45.94 | 57.18 | 57.29 | 67.90 | 76.77 | 73.93 | 88.68 | 81.68 | 77.40 | 69.52 | 56.43 | 46.16 | 66.57 | |||||||||||||
| 1955 | 43.45 | 48.11 | 55.90 | 55.73 | 70.26 | 80.27 | 83.52 | 91.39 | 80.30 | 68.10 | 50.50 | 48.42 | 64.66 | |||||||||||||
| 1956 | 47.10 | 46.34 | 55.84 | 67.20 | 72.61 | 76.60 | 90.74 | 86.52 | 81.57 | 63.39 | 48.97 | 40.39 | 64.77 | |||||||||||||
| 1957 | 41.58 | 54.96 | 54.97 | 65.57 | 73.42 | 82.67 | 86.03 | 84.58 | 84.50 | 62.42 | 50.47 | 43.23 | 65.37 | |||||||||||||
| 1958 | 46.29 | 55.82 | 54.97 | 63.47 | 80.06 | 78.37 | 93.06 | 94.06 | 80.50 | 75.35 | 52.47 | 49.71 | 68.68 | |||||||||||||
| 1959 | 48.35 | 51.18 | 59.00 | 69.10 | 69.06 | 80.73 | 94.26 | 88.87 | 76.87 | 71.29 | 59.10 | 43.19 | 67.58 | |||||||||||||
| 1960 | 46.58 | 52.79 | 61.26 | 63.03 | 67.71 | 86.97 | 94.06 | 87.94 | 86.07 | 70.35 | 53.70 | 45.94 | 68.03 | |||||||||||||
| 1961 | 50.32 | 53.18 | 56.06 | 65.93 | 69.03 | 87.63 | 93.55 | 94.16 | 78.63 | 67.03 | 53.50 | 41.39 | 67.54 | |||||||||||||
| 1962 | 39.03 | 52.14 | 56.58 | 69.77 | 67.03 | 83.40 | 91.55 | 85.68 | 84.43 | 63.42 | 52.50 | 44.65 | 65.85 | |||||||||||||
| 1963 | 41.97 | 57.18 | 55.90 | 56.33 | 70.58 | 78.00 | 83.32 | 87.77 | 88.90 | 67.29 | 50.47 | 43.16 | 65.07 | |||||||||||||
| 1964 | 41.90 | 52.34 | 55.00 | 62.57 | 70.23 | 77.93 | 87.87 | 87.81 | 80.67 | 72.90 | 49.33 | 47.48 | 65.50 | |||||||||||||
| 1965 | 43.16 | 54.79 | 64.52 | 65.40 | 72.97 | 81.37 | 92.19 | 86.45 | 81.80 | 74.29 | 55.60 | 42.48 | 67.92 | |||||||||||||
| 1966 | 45.61 | 51.29 | 59.97 | 69.97 | 75.45 | 78.97 | 85.48 | 89.90 | 81.67 | 69.26 | 53.77 | 46.42 | 67.31 | |||||||||||||
| 1967 | 46.00 | 50.96 | 55.06 | 56.17 | 75.13 | 85.77 | 94.19 | 98.71 | 88.03 | 67.65 | 56.30 | 42.19 | 68.01 | |||||||||||||
| 1968 | 45.23 | 59.83 | 61.65 | 65.10 | 72.94 | 85.70 | 92.65 | 83.77 | 85.03 | 70.16 | 50.50 | 44.48 | 68.09 | |||||||||||||
| 1969 | 40.94 | 48.00 | 59.35 | 62.07 | 78.48 | 80.57 | 90.65 | 89.13 | 81.07 | 62.35 | 53.93 | 46.58 | 66.09 | |||||||||||||
| 1970 | 48.52 | 56.11 | 58.84 | 58.53 | 73.81 | 84.97 | 95.23 | 94.16 | 81.33 | 69.42 | 55.53 | 44.26 | 68.39 | |||||||||||||
| 1971 | 42.26 | 49.68 | 54.10 | 61.23 | 68.90 | 75.77 | 91.00 | 92.03 | 79.13 | 63.55 | 49.63 | 41.35 | 64.05 | |||||||||||||
| 1972 | 42.55 | 52.24 | 61.52 | 60.70 | 73.19 | 82.27 | 95.26 | 92.68 | 78.87 | 67.74 | 53.30 | 38.84 | 66.60 | |||||||||||||
| 1973 | 45.68 | 57.71 | 55.90 | 67.63 | 78.77 | 84.23 | 94.90 | 90.97 | 84.67 | 67.29 | 51.67 | 49.90 | 69.11 | |||||||||||||
| 1974 | 46.58 | 49.54 | 54.45 | 60.23 | 70.84 | 84.87 | 88.55 | 91.26 | 91.57 | 71.65 | 53.57 | 44.61 | 67.31 | |||||||||||||
| 1975 | 41.23 | 51.21 | 52.52 | 57.03 | 73.68 | 80.23 | 89.29 | 85.68 | 89.77 | 62.77 | 49.27 | 43.61 | 64.69 | |||||||||||||
| 1976 | 47.39 | 52.00 | 54.58 | 60.73 | 73.71 | 78.17 | 88.45 | 81.00 | 81.87 | 71.32 | 52.70 | 38.42 | 65.03 | |||||||||||||
| 1977 | 43.61 | 58.57 | 54.48 | 70.37 | 65.19 | 86.40 | 90.16 | 93.32 | 77.93 | 65.68 | 50.77 | 48.45 | 67.08 | |||||||||||||
| 1978 | 52.10 | 54.57 | 61.87 | 60.67 | 71.32 | 82.50 | 90.39 | 86.68 | 71.80 | 75.45 | 50.47 | 40.00 | 66.48 | |||||||||||||
| 1979 | 45.65 | 49.93 | 61.42 | 61.97 | 73.23 | 83.60 | 91.29 | 86.16 | 87.03 | 71.94 | 50.60 | 46.74 | 67.46 | |||||||||||||
| 1980 | 47.84 | 56.14 | 55.94 | 65.60 | 70.42 | 74.53 | 91.48 | 87.97 | 84.37 | 72.06 | 52.50 | 44.81 | 66.97 | |||||||||||||
| 1981 | 48.68 | 52.21 | 58.90 | 65.87 | 70.65 | 81.20 | 90.45 | 94.81 | 84.60 | 65.48 | 54.20 | 48.23 | 67.94 | |||||||||||||
| 1982 | 40.00 | 51.46 | 55.32 | 62.17 | 74.58 | 81.90 | 88.52 | 89.55 | 78.53 | 68.32 | 52.47 | 46.74 | 65.80 | |||||||||||||
| 1983 | 47.81 | 53.04 | 57.52 | 61.00 | 74.35 | 78.37 | 84.06 | 88.10 | 79.40 | 67.84 | 50.50 | 45.81 | 65.65 | |||||||||||||
| 1984 | 46.84 | 52.55 | 60.00 | 59.47 | 72.77 | 79.07 | 92.81 | 88.84 | 82.20 | 61.68 | 51.23 | 42.32 | 65.81 | |||||||||||||
| 1985 | 49.00 | 52.82 | 56.23 | 71.23 | 72.55 | 85.23 | 95.10 | 89.06 | 75.53 | 67.71 | 46.27 | 44.65 | 67.11 | |||||||||||||
| 1986 | 52.42 | 54.43 | 64.39 | 64.10 | 73.61 | 86.23 | 87.29 | 95.90 | 73.33 | 71.16 | 52.57 | 43.84 | 68.27 | |||||||||||||
| 1987 | 48.16 | 55.07 | 59.58 | 72.90 | 77.58 | 88.23 | 84.29 | 94.29 | 85.27 | 79.84 | 56.20 | 46.19 | 70.63 | |||||||||||||
| 1988 | 46.68 | 58.93 | 61.74 | 66.43 | 70.61 | 80.60 | 94.77 | 93.45 | 87.23 | 79.84 | 52.70 | 46.39 | 69.95 | |||||||||||||
| 1989 | 45.65 | 49.57 | 56.32 | 70.57 | 71.74 | 84.67 | 86.10 | 87.03 | 83.30 | 69.29 | 55.43 | 44.74 | 67.03 | |||||||||||||
| 1990 | 48.77 | 52.14 | 61.84 | 71.40 | 71.13 | 81.97 | 94.29 | 89.84 | 87.77 | 67.87 | 50.37 | 40.32 | 68.14 | |||||||||||||
| 1991 | 48.58 | 59.75 | 56.16 | 61.40 | 67.19 | 78.03 | 91.84 | 91.06 | 91.97 | 75.71 | 56.17 | 43.84 | 68.48 | |||||||||||||
| 1992 | 50.71 | 61.07 | 66.16 | 69.80 | 84.90 | 85.07 | 90.90 | 94.97 | 85.83 | 72.68 | 54.93 | 43.58 | 71.72 | |||||||||||||
| 1993 | 45.71 | 51.82 | 61.84 | 62.30 | 73.94 | 78.07 | 82.42 | 87.32 | 87.77 | 74.45 | 53.20 | 48.74 | 67.30 | |||||||||||||
| 1994 | 48.42 | 51.68 | 64.26 | 66.87 | 75.74 | 81.27 | 96.03 | 89.74 | 87.37 | 68.97 | 46.17 | 47.74 | 68.69 | |||||||||||||
| 1995 | 53.16 | 60.39 | 57.68 | 62.87 | 74.26 | 78.63 | 88.87 | 87.55 | 86.63 | 72.26 | 57.70 | 51.29 | 69.27 | |||||||||||||
| 1996 | 46.03 | 58.07 | 62.16 | 66.60 | 70.23 | 81.57 | 94.26 | 93.23 | 81.03 | 68.13 | 55.83 | 47.65 | 68.73 | |||||||||||||
| 1997 | 47.48 | 53.68 | 61.71 | 64.33 | 79.48 | 78.03 | 89.32 | 89.68 | 81.77 | 66.84 | 55.90 | 45.06 | 67.77 | |||||||||||||
| 1998 | 50.39 | 51.89 | 57.23 | 62.93 | 62.74 | 80.13 | 92.65 | 93.10 | 85.80 | 65.90 | 51.80 | 41.97 | 66.38 | |||||||||||||
| 1999 | 46.94 | 49.46 | 54.74 | 63.50 | 70.10 | 79.13 | 89.23 | 86.74 | 87.07 | 73.03 | 58.73 | 46.13 | 67.07 | |||||||||||||
| 2000 | 46.29 | 54.28 | 56.61 | 67.93 | 71.13 | 85.33 | 87.10 | 90.35 | 81.53 | 68.00 | 48.23 | 45.10 | 66.82 | |||||||||||||
| 2001 | 50.16 | 51.93 | 60.55 | 61.27 | 81.97 | 79.53 | 89.61 | 91.32 | 85.87 | 71.55 | 56.60 | 46.94 | 68.94 | |||||||||||||
| 2002 | 46.77 | 56.61 | 58.13 | 66.27 | 72.52 | 83.80 | 93.81 | 89.81 | 84.70 | 70.26 | 56.83 | 47.61 | 68.93 | |||||||||||||
| 2003 | 51.39 | 53.57 | 58.74 | 57.60 | 71.58 | 86.30 | 94.61 | 89.42 | 86.33 | 72.65 | 51.20 | 49.06 | 68.54 | |||||||||||||
| 2004 | 48.19 | 53.93 | 65.77 | 69.70 | 72.00 | 83.03 | 93.16 | 91.32 | 79.87 | 68.35 | 51.93 | 46.94 | 68.68 | |||||||||||||
| 2005 | 45.90 | 58.25 | 63.55 | 63.07 | 71.03 | 76.00 | 93.65 | 93.97 | 80.33 | 69.03 | 51.30 | 47.81 | 67.82 | |||||||||||||
| 2006 | 46.94 | 56.14 | 53.00 | 64.80 | 76.74 | 83.63 | 93.00 | 90.16 | 84.93 | 70.32 | 52.10 | 47.94 | 68.31 | |||||||||||||
| 2007 | 45.26 | 51.25 | 62.55 | 65.37 | 77.06 | 81.17 | 90.84 | 89.10 | 79.80 | 64.55 | 55.07 | 44.45 | 67.20 | |||||||||||||
| 2008 | 45.13 | 54.07 | 54.71 | 61.90 | 74.39 | 81.97 | 92.03 | 90.35 | 88.43 | 70.45 | 52.80 | 43.35 | 67.47 | |||||||||||||
| 2009 | 47.74 | 54.61 | 55.81 | 65.23 | 77.23 | 80.93 | 95.55 | 90.90 | 86.47 | 65.00 | 51.13 | 41.55 | 67.68 | |||||||||||||
| 2010 | 52.58 | 56.04 | 59.03 | 60.93 | 66.48 | 76.90 | 93.03 | 89.65 | 81.67 | 70.06 | 51.80 | 49.52 | 67.31 | |||||||||||||
| 2011 | 47.65 | 51.32 | 54.74 | 58.87 | 66.35 | 78.23 | 86.00 | 91.32 | 89.73 | 69.81 | 53.77 | 45.65 | 66.12 | |||||||||||||
| 2012 | 48.03 | 53.66 | 55.42 | 64.77 | 74.61 | 77.20 | 89.77 | 94.39 | 90.13 | 70.16 | 54.53 | 44.39 | 68.09 | |||||||||||||
| 2013 | 44.55 | 50.86 | 61.71 | 60.00 | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 52.37 | ||||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 45.97 | 53.24 | 58.50 | 64.71 | 72.90 | 80.64 | 90.23 | 89.59 | 83.21 | 69.25 | 53.25 | 45.27 | 67.23 | |||||||||||||
| S.D. | 3.48 | 3.26 | 3.63 | 4.27 | 4.18 | 3.67 | 3.37 | 3.37 | 4.21 | 3.93 | 2.90 | 2.70 | 1.44 | |||||||||||||
| SKEW | -0.41 | 0.30 | 0.56 | 0.04 | 0.03 | 0.08 | -0.43 | -0.15 | -0.22 | 0.41 | 0.15 | -0.25 | 0.13 | |||||||||||||
| MAX | 53.16 | 61.07 | 69.71 | 73.60 | 84.90 | 88.23 | 96.03 | 98.71 | 91.97 | 79.84 | 60.50 | 51.29 | 71.72 | |||||||||||||
| MIN | 35.58 | 46.34 | 52.23 | 55.73 | 62.74 | 71.93 | 81.94 | 81.00 | 71.80 | 61.68 | 46.17 | 38.42 | 63.64 | |||||||||||||
| NO YRS | 86 | 86 | 86 | 85 | 85 | 85 | 85 | 85 | 85 | 85 | 85 | 85 | 85 | |||||||||||||