| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1943 | ----- | z | ----- | z | ----- | z | ----- | z | 60.61 | 67.80 | 84.52 | 81.42 | 81.33 | 61.39 | 47.63 | 38.10 | 65.35 | |||||||||
| 1944 | 34.35 | 38.93 | 46.52 | 56.60 | 68.71 | 70.10 | 82.55 | 82.52 | 76.33 | 70.35 | 42.77 | 35.90 | 58.80 | |||||||||||||
| 1945 | 34.94 | 41.07 | 45.77 | 54.83 | 65.26 | 70.00 | 87.65 | 85.03 | 70.77 | 66.74 | 43.17 | a | 34.17 | a | 58.28 | |||||||||||
| 1946 | 34.87 | 38.25 | 49.52 | 62.03 | 67.58 | 72.83 | 84.16 | 84.94 | 72.30 | 53.29 | 42.90 | 41.58 | 58.69 | |||||||||||||
| 1947 | 32.06 | 45.64 | 55.06 | 58.87 | 73.81 | 68.63 | 86.19 | 83.10 | 75.79 | a | 61.00 | 40.97 | 36.90 | 59.84 | ||||||||||||
| 1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 79.71 | 80.52 | 73.52 | a | 63.13 | 42.43 | 28.35 | 61.28 | ||||||
| 1949 | 19.00 | a | 35.04 | 48.58 | 63.93 | 70.39 | 75.60 | 84.71 | 85.74 | 76.83 | 55.87 | 53.50 | 36.32 | 58.79 | ||||||||||||
| 1950 | 26.68 | 38.89 | 45.29 | 55.37 | 66.13 | 71.63 | 84.13 | a | 85.26 | 74.83 | 62.45 | 46.63 | 40.10 | 58.12 | ||||||||||||
| 1951 | 32.45 | 39.82 | 43.00 | 62.43 | b | 67.90 | a | 73.67 | 87.17 | b | 83.45 | 77.03 | 57.29 | 44.13 | 30.50 | a | 58.24 | |||||||||
| 1952 | 28.53 | a | 33.62 | 41.67 | a | 62.59 | a | 67.32 | 72.40 | 84.93 | a | 84.10 | 78.57 | 70.94 | 43.07 | a | 34.39 | 58.51 | ||||||||
| 1953 | 42.87 | 40.11 | 48.00 | 55.03 | 61.52 | 66.23 | 85.65 | 81.87 | 79.50 | 64.03 | 50.67 | 36.65 | 59.34 | |||||||||||||
| 1954 | 38.58 | 46.68 | 46.39 | 58.97 | 70.52 | 68.03 | 85.32 | 77.19 | 71.73 | 60.48 | 51.03 | 35.42 | 59.20 | |||||||||||||
| 1955 | 28.29 | 33.64 | 39.65 | 50.23 | 62.35 | 76.17 | 80.58 | 85.97 | 73.20 | 61.00 | 37.90 | 35.35 | 55.36 | |||||||||||||
| 1956 | 34.55 | 32.03 | 47.13 | 61.27 | 67.35 | 70.90 | 84.06 | 80.16 | 75.77 | 56.39 | 44.57 | 34.42 | 57.38 | |||||||||||||
| 1957 | 23.52 | 37.39 | 47.84 | 57.70 | 65.90 | 74.30 | 83.42 | 81.19 | 78.53 | 55.68 | 42.63 | 37.32 | 57.12 | |||||||||||||
| 1958 | 35.42 | 45.04 | 45.94 | 54.70 | 75.65 | 74.80 | 85.77 | 87.39 | 71.97 | 66.00 | 44.33 | 40.23 | 60.60 | |||||||||||||
| 1959 | 37.97 | 40.14 | 48.16 | 59.87 | 60.87 | 76.40 | 86.29 | 80.16 | 66.77 | 58.23 | 44.67 | 37.35 | 58.07 | |||||||||||||
| 1960 | 29.58 | 35.48 | 48.84 | 57.63 | 62.03 | 78.14 | a | 90.26 | 78.84 | 77.43 | 61.61 | 45.10 | 36.61 | 58.46 | ||||||||||||
| 1961 | 37.48 | 44.71 | 49.23 | 58.10 | 66.10 | 84.13 | 89.61 | 90.68 | 68.37 | 59.16 | 44.80 | 35.32 | 60.64 | |||||||||||||
| 1962 | 28.71 | 35.82 | 47.65 | 64.40 | 62.29 | 76.27 | 83.68 | 81.29 | 76.97 | 60.81 | 46.60 | 38.00 | 58.54 | |||||||||||||
| 1963 | 29.90 | 50.07 | 49.71 | 53.53 | 68.65 | 71.70 | 81.19 | 83.58 | 80.33 | 65.45 | 47.63 | 34.26 | 59.67 | |||||||||||||
| 1964 | 31.97 | 35.03 | 44.55 | 57.20 | 68.00 | 71.67 | 84.48 | 80.94 | 74.13 | 66.94 | 46.10 | 36.90 | 58.16 | |||||||||||||
| 1965 | 36.87 | 42.89 | 50.52 | 60.53 | 64.97 | 73.67 | 83.61 | 80.26 | 70.10 | 69.71 | 50.67 | 37.61 | 60.12 | |||||||||||||
| 1966 | 39.71 | 37.82 | 51.77 | 61.70 | 73.29 | 72.87 | 84.68 | 84.77 | 79.70 | 61.90 | 48.63 | 38.16 | 61.25 | |||||||||||||
| 1967 | 40.77 | 46.32 | 48.35 | 52.60 | 67.71 | 75.90 | 87.16 | 91.06 | 83.33 | 61.32 | 47.73 | 35.39 | 61.47 | |||||||||||||
| 1968 | 37.03 | 47.24 | 56.19 | 57.60 | 67.23 | 74.97 | 86.81 | 76.23 | 73.40 | 59.68 | 43.87 | 35.61 | 59.65 | |||||||||||||
| 1969 | 34.00 | 35.75 | 50.61 | 59.97 | 71.55 | 76.03 | 83.03 | 85.87 | 78.00 | 59.58 | 51.30 | 40.97 | 60.56 | |||||||||||||
| 1970 | 39.06 | 49.86 | 47.42 | 50.83 | 64.74 | 75.93 | 85.84 | 89.52 | 68.77 | 58.03 | 46.60 | 33.23 | 59.15 | |||||||||||||
| 1971 | 36.65 | 42.93 | 45.39 | 58.00 | 68.10 | 70.73 | 83.10 | 89.29 | 67.47 | 58.10 | 44.20 | 31.32 | 57.94 | |||||||||||||
| 1972 | 32.13 | 41.69 | 55.23 | 55.93 | 73.19 | 77.33 | 85.48 | 88.26 | 71.13 | 64.06 | 44.77 | 30.45 | 59.97 | |||||||||||||
| 1973 | 34.23 | 45.29 | 51.10 | 60.23 | 71.81 | 77.50 | 89.52 | 85.77 | 74.97 | 62.65 | 43.40 | 40.71 | 61.43 | |||||||||||||
| 1974 | 32.13 | 43.75 | 49.65 | 57.67 | 64.52 | 83.17 | 84.77 | 86.16 | 81.80 | 64.77 | 47.77 | 35.00 | 60.93 | |||||||||||||
| 1975 | 31.16 | 35.68 | 44.03 | 50.93 | 66.06 | 72.33 | 86.29 | 79.45 | 79.87 | 57.84 | 44.07 | 38.74 | 57.20 | |||||||||||||
| 1976 | 35.35 | 38.52 | 46.48 | 56.97 | 69.45 | 72.97 | 84.61 | 76.35 | 76.97 | 64.55 | 52.60 | 41.52 | 59.69 | |||||||||||||
| 1977 | 27.90 | 48.21 | 47.97 | 67.77 | 62.06 | 81.60 | 84.06 | 86.19 | 71.73 | 63.26 | 45.63 | 40.19 | 60.55 | |||||||||||||
| 1978 | 39.58 | 43.00 | 57.68 | 55.73 | 63.97 | 76.67 | 85.23 | 81.39 | 71.03 | 66.81 | 40.93 | 26.61 | 59.05 | |||||||||||||
| 1979 | 20.23 | 37.39 | 52.74 | 58.37 | 69.58 | 78.00 | 87.16 | 83.61 | 80.83 | 64.23 | 43.80 | 40.61 | 59.71 | |||||||||||||
| 1980 | 33.03 | 43.69 | 47.71 | 63.50 | 67.00 | 70.33 | 85.23 | 81.19 | 76.13 | 64.42 | 46.73 | 40.10 | 59.92 | |||||||||||||
| 1981 | 39.65 | 43.89 | 52.97 | 58.93 | 63.35 | 72.87 | 84.06 | 90.52 | 77.57 | 58.48 | 48.97 | 39.06 | 60.86 | |||||||||||||
| 1982 | 31.84 | 36.11 | 49.06 | 56.20 | 66.55 | 76.70 | 81.26 | 84.81 | 71.23 | 58.87 | 42.27 | 35.48 | 57.53 | |||||||||||||
| 1983 | 40.19 | 45.11 | 51.68 | 55.83 | 68.26 | 73.37 | 80.29 | 85.42 | 71.43 | 64.03 | 45.50 | 26.90 | 59.00 | |||||||||||||
| 1984 | 28.00 | 32.45 | 46.87 | 53.97 | 64.23 | 70.63 | 85.81 | 86.81 | 71.20 | 56.16 | 44.83 | 29.26 | 55.85 | |||||||||||||
| 1985 | 25.90 | 31.11 | 44.52 | 64.27 | 69.03 | 78.97 | 92.00 | 82.03 | 66.53 | 59.68 | 32.83 | 27.03 | 56.16 | |||||||||||||
| 1986 | 38.77 | 46.04 | 57.58 | 59.40 | 68.97 | 81.47 | 79.55 | 88.52 | 65.77 | 64.71 | 44.83 | 34.84 | 60.87 | |||||||||||||
| 1987 | 31.26 | 44.14 | 51.13 | 67.10 | 70.19 | 79.33 | 80.32 | 82.90 | 80.07 | 69.42 | 46.73 | 36.90 | 61.63 | |||||||||||||
| 1988 | 32.42 | 42.83 | 51.16 | 60.83 | 66.74 | 75.50 | 84.81 | 84.45 | 74.80 | 72.26 | 42.57 | 31.42 | 59.98 | |||||||||||||
| 1989 | 27.48 | 25.93 | 47.13 | 61.83 | 64.16 | 76.80 | 85.58 | 77.55 | 75.00 | 60.23 | 47.37 | 41.61 | 57.56 | |||||||||||||
| 1990 | 38.55 | 40.82 | 54.13 | 64.60 | 63.77 | 74.97 | 86.16 | 82.87 | 82.73 | 57.39 | 46.33 | 25.90 | 59.85 | |||||||||||||
| 1991 | 31.00 | 48.46 | 48.10 | 55.50 | 61.61 | 68.17 | 83.74 | 86.81 | 77.77 | 63.74 | 41.87 | 39.68 | 58.87 | |||||||||||||
| 1992 | 39.74 | 50.97 | 60.13 | 63.67 | 75.87 | 79.23 | 80.77 | 85.68 | 74.67 | 65.97 | 39.77 | 31.29 | 62.31 | |||||||||||||
| 1993 | 27.45 | 31.96 | 46.52 | 55.73 | 72.10 | 69.83 | 72.68 | 79.55 | 77.03 | 63.45 | 41.70 | 38.13 | 56.34 | |||||||||||||
| 1994 | 40.42 | 40.07 | 57.29 | 61.87 | 68.48 | 76.07 | 87.90 | 88.06 | 80.00 | 61.35 | 38.20 | 34.10 | 61.15 | |||||||||||||
| 1995 | 39.81 | ----- | z | 50.61 | 56.67 | 66.71 | 71.60 | 82.71 | 82.26 | 78.83 | 58.71 | 49.13 | 39.19 | 61.48 | ||||||||||||
| 1996 | 37.39 | 43.07 | 53.19 | 59.40 | 62.84 | 76.00 | 88.94 | 85.58 | 73.20 | 61.87 | 47.27 | 38.55 | 60.61 | |||||||||||||
| 1997 | 37.71 | 43.07 | 53.77 | 56.53 | 72.55 | 73.00 | 81.84 | 87.68 | 78.77 | 61.71 | 50.40 | 37.06 | 61.17 | |||||||||||||
| 1998 | 40.16 | 45.04 | 52.06 | 59.37 | 63.45 | 73.33 | 89.77 | 89.23 | 81.40 | 61.55 | 46.33 | 34.42 | 61.34 | |||||||||||||
| 1999 | 40.29 | 39.89 | 50.97 | 57.63 | 64.77 | 74.13 | 84.48 | 86.81 | 77.07 | 65.68 | 53.47 | 33.58 | 60.73 | |||||||||||||
| 2000 | 36.10 | 45.69 | 51.61 | 65.20 | 67.39 | 78.33 | 86.87 | 88.26 | 71.13 | 59.97 | 39.20 | 35.26 | 60.42 | |||||||||||||
| 2001 | 31.19 | 38.11 | 54.00 | 55.93 | 71.47 | a | 74.77 | 84.68 | 91.19 | ----- | z | 60.16 | 48.33 | 31.87 | 58.34 | |||||||||||
| 2002 | 32.19 | 35.43 | 45.74 | 57.80 | 65.00 | 75.37 | 86.77 | 80.87 | 75.57 | 59.68 | 48.87 | 40.10 | 58.62 | |||||||||||||
| 2003 | 40.97 | 41.21 | 53.29 | 55.60 | 65.84 | 77.77 | 90.26 | 86.81 | 77.00 | 66.61 | 41.93 | 38.16 | 61.29 | |||||||||||||
| 2004 | 30.45 | 36.41 | 56.00 | 62.43 | 63.42 | 75.07 | 85.29 | 83.45 | 71.93 | 60.52 | 44.70 | 39.48 | 59.10 | |||||||||||||
| 2005 | 35.42 | 44.07 | 53.61 | 57.37 | 65.42 | 71.23 | 86.81 | 86.19 | 72.93 | 61.23 | 42.77 | 30.90 | 59.00 | |||||||||||||
| 2006 | 37.35 | 39.82 | 46.35 | 57.53 | 69.68 | 76.80 | 90.10 | 84.19 | 75.73 | 60.16 | 46.20 | 36.10 | 60.00 | |||||||||||||
| 2007 | 34.26 | 44.07 | 55.00 | 58.57 | 69.84 | 76.87 | 91.42 | 84.71 | 74.27 | 58.26 | 44.83 | 32.84 | 60.41 | |||||||||||||
| 2008 | 29.58 | 37.07 | 44.39 | 52.50 | 66.06 | 72.77 | 84.42 | 83.94 | 75.97 | 61.58 | 49.10 | 32.23 | 57.47 | |||||||||||||
| 2009 | 32.48 | 40.18 | 45.29 | 57.37 | 68.68 | 73.23 | 86.65 | 84.03 | 79.90 | 53.65 | 44.97 | 31.13 | 58.13 | |||||||||||||
| 2010 | 37.23 | 41.68 | 50.71 | 55.57 | 58.74 | 69.93 | 82.90 | 81.84 | 76.00 | 62.61 | 42.93 | 35.42 | 57.96 | |||||||||||||
| 2011 | 31.74 | 38.29 | 46.13 | 51.43 | 60.71 | 69.27 | 81.26 | 86.42 | 82.21 | b | 60.68 | 41.93 | 37.81 | 57.32 | ||||||||||||
| 2012 | 38.90 | 41.41 | 51.32 | 60.13 | 65.45 | 72.30 | 86.77 | 87.61 | 78.40 | 59.10 | 47.27 | 35.74 | 60.37 | |||||||||||||
| 2013 | 26.57 | a | 40.36 | 51.00 | 70.00 | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 39.31 | |||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 33.83 | 40.62 | 49.63 | 58.39 | 66.89 | 74.31 | 84.99 | 84.25 | 75.41 | 61.84 | 45.28 | 35.60 | 59.28 | |||||||||||||
| S.D. | 5.15 | 5.05 | 4.12 | 3.87 | 3.74 | 3.69 | 3.16 | 3.55 | 4.18 | 3.95 | 3.73 | 3.89 | 1.55 | |||||||||||||
| SKEW | -0.58 | -0.28 | 0.23 | 0.18 | 0.23 | 0.26 | -0.59 | -0.16 | -0.29 | 0.40 | -0.24 | -0.62 | -0.36 | |||||||||||||
| MAX | 42.87 | 50.97 | 60.13 | 67.77 | 75.87 | 84.13 | 92.00 | 91.19 | 83.33 | 72.26 | 53.50 | 41.61 | 62.31 | |||||||||||||
| MIN | 19.00 | 25.93 | 39.65 | 50.23 | 58.74 | 66.23 | 72.68 | 76.23 | 65.77 | 53.29 | 32.83 | 25.90 | 55.36 | |||||||||||||
| NO YRS | 69 | 68 | 69 | 68 | 69 | 69 | 70 | 70 | 69 | 70 | 70 | 70 | 66 | |||||||||||||