| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 39.81 | e | 39.81 | |
| 1955 | 34.26 | 41.32 | 51.16 | 56.57 | 71.00 | 83.23 | 89.29 | 95.32 | 81.87 | 70.74 | 49.67 | 43.35 | 63.98 | |||||||||||||
| 1956 | 41.87 | 39.14 | 55.06 | 64.73 | 71.97 | 82.50 | 92.52 | 88.35 | 83.07 | 63.10 | 53.10 | 43.68 | 64.92 | |||||||||||||
| 1957 | 35.87 | 50.21 | 54.68 | 61.57 | 69.61 | 84.87 | 92.87 | 88.90 | 84.77 | 60.03 | 46.83 | 44.26 | 64.54 | |||||||||||||
| 1958 | 41.74 | 50.75 | 48.45 | 59.70 | 81.87 | 81.27 | 91.52 | 94.10 | 81.73 | 74.00 | 54.57 | 50.06 | 67.48 | |||||||||||||
| 1959 | 45.52 | 45.25 | 56.45 | 69.53 | 67.65 | 88.10 | 97.00 | 90.29 | 76.97 | 68.35 | 57.43 | 42.81 | 67.11 | |||||||||||||
| 1960 | 36.13 | 41.41 | 57.68 | 65.03 | 71.48 | 89.20 | 96.90 | 90.06 | 85.33 | 68.87 | 49.00 | 43.42 | 66.21 | |||||||||||||
| 1961 | 46.55 | 49.29 | 54.19 | 64.57 | 71.35 | 88.90 | 95.77 | 92.45 | 74.37 | 66.81 | 50.27 | 39.52 | 66.17 | |||||||||||||
| 1962 | 34.52 | 38.61 | 51.00 | 71.23 | 68.81 | 85.80 | 93.19 | 90.65 | 84.40 | 68.58 | 54.10 | 45.23 | 65.51 | |||||||||||||
| 1963 | 40.74 | 55.32 | 52.94 | 56.73 | 74.90 | 76.70 | 88.58 | 89.84 | 83.50 | 70.68 | 50.90 | 43.06 | 65.32 | |||||||||||||
| 1964 | 39.71 | 45.17 | 51.81 | 61.23 | 71.32 | 75.43 | 92.97 | 89.45 | 78.43 | 73.65 | 48.27 | 42.03 | 64.12 | |||||||||||||
| 1965 | 39.39 | 49.07 | 55.58 | 64.20 | 68.97 | 80.77 | 91.77 | 84.45 | 74.73 | 74.97 | 52.30 | 39.97 | 64.68 | |||||||||||||
| 1966 | 42.65 | 43.86 | 58.23 | 68.87 | 81.16 | 83.43 | 92.68 | 92.26 | 82.03 | 68.48 | 51.70 | 38.32 | 66.97 | |||||||||||||
| 1967 | 42.77 | 50.68 | 53.10 | 51.97 | 73.90 | 78.97 | 93.81 | 94.90 | 83.77 | 68.84 | 54.07 | 37.29 | 65.34 | |||||||||||||
| 1968 | 42.26 | 54.59 | 59.48 | 62.40 | 73.32 | 84.97 | 96.48 | 82.45 | 80.43 | 66.74 | 46.30 | 38.84 | 65.69 | |||||||||||||
| 1969 | 39.32 | 41.61 | 51.71 | 65.77 | 79.13 | 78.97 | 93.13 | 92.97 | 82.47 | 58.84 | 54.07 | 43.03 | 65.08 | |||||||||||||
| 1970 | 40.32 | 53.00 | 53.65 | 56.03 | 73.90 | 82.50 | 92.90 | 93.90 | 77.10 | 63.48 | 50.63 | 35.94 | 64.45 | |||||||||||||
| 1971 | 42.55 | 49.36 | 51.74 | 61.57 | 69.39 | 78.40 | 91.42 | 93.26 | 75.67 | 59.45 | 48.93 | 34.94 | 63.06 | |||||||||||||
| 1972 | 34.55 | 47.31 | 60.74 | 62.20 | 78.00 | 84.03 | 93.26 | 91.61 | 77.13 | 63.39 | 47.03 | 32.90 | 64.35 | |||||||||||||
| 1973 | 35.13 | 47.57 | 50.68 | 62.13 | 77.97 | 85.33 | 93.65 | 89.48 | 79.70 | 66.61 | 48.47 | 44.16 | 65.07 | |||||||||||||
| 1974 | 37.77 | 47.14 | 54.26 | 61.00 | 74.13 | 89.43 | 90.45 | 90.48 | 86.37 | 66.90 | 53.13 | 39.68 | 65.90 | |||||||||||||
| 1975 | 39.10 | 43.14 | 49.10 | 52.90 | 71.29 | 80.67 | 92.19 | 85.16 | 84.90 | 64.48 | 49.27 | 45.19 | 63.12 | |||||||||||||
| 1976 | 43.58 | 51.24 | 53.29 | 62.40 | 79.29 | 79.37 | 91.10 | 81.03 | 79.63 | 67.61 | 57.93 | 44.03 | 65.88 | |||||||||||||
| 1977 | 35.97 | 49.75 | 50.74 | 69.60 | 63.45 | 87.07 | 92.29 | 89.61 | 79.20 | 70.26 | 53.37 | 44.87 | 65.51 | |||||||||||||
| 1978 | 41.94 | 46.61 | 59.45 | 58.37 | 68.45 | 81.47 | 91.29 | 89.26 | 74.43 | 74.06 | 47.50 | 37.52 | 64.20 | |||||||||||||
| 1979 | 33.68 | 42.68 | 55.55 | 61.17 | 74.68 | 84.20 | 91.29 | 86.16 | 83.57 | 69.29 | 47.63 | 42.68 | 64.38 | |||||||||||||
| 1980 | 38.94 | 48.52 | 50.39 | 65.37 | 69.35 | 77.90 | ----- | z | 89.26 | ----- | z | ----- | z | 53.54 | d | 46.84 | 60.01 | |||||||||
| 1981 | 46.43 | a | 47.86 | 54.43 | a | 67.57 | b | 69.67 | d | 85.80 | e | 93.36 | c | 94.15 | e | 84.38 | d | 59.38 | g | 53.50 | 46.87 | a | 67.64 | |||
| 1982 | 38.29 | 46.00 | a | 51.13 | 60.44 | c | 73.07 | d | 80.08 | f | 89.45 | i | 90.55 | 74.17 | 62.23 | 44.73 | 39.65 | e | 58.03 | |||||||
| 1983 | 42.57 | a | 47.68 | 50.39 | 57.33 | 71.19 | 78.70 | 86.35 | 86.19 | 79.13 | 67.16 | 48.47 | 38.45 | 62.80 | ||||||||||||
| 1984 | 30.81 | 41.31 | 54.61 | 60.07 | 74.00 | 78.67 | 94.13 | 91.68 | 80.00 | 59.00 | 48.30 | 37.68 | 62.52 | |||||||||||||
| 1985 | 35.10 | 42.71 | 49.93 | a | 69.10 | 77.84 | 89.07 | b | 94.62 | b | 88.16 | 71.30 | 65.58 | 41.57 | 34.68 | 63.31 | ||||||||||
| 1986 | 47.45 | 50.86 | 60.39 | 62.87 | 73.55 | 86.70 | 87.55 | 92.48 | 69.97 | 68.19 | 55.20 | 42.97 | 66.51 | |||||||||||||
| 1987 | 38.29 | 49.32 | 53.35 | 72.73 | 74.23 | 84.97 | 86.77 | 90.35 | 84.63 | 74.26 | 51.33 | 39.87 | 66.68 | |||||||||||||
| 1988 | 37.29 | 49.62 | 59.03 | 67.07 | 73.45 | 84.93 | 96.29 | 92.84 | 81.23 | 76.65 | 50.10 | 39.42 | 67.33 | |||||||||||||
| 1989 | 34.03 | 38.79 | 56.55 | 70.90 | 72.77 | 83.67 | 94.29 | 85.84 | 80.57 | 65.16 | 54.07 | 43.23 | 64.99 | |||||||||||||
| 1990 | 44.13 | 42.79 | 59.10 | 70.93 | 69.77 | 82.63 | 94.13 | 88.61 | 85.93 | 69.55 | 52.33 | 33.10 | 66.08 | |||||||||||||
| 1991 | 39.19 | 56.68 | 50.65 | 60.13 | 65.84 | 78.90 | 94.35 | 91.48 | 83.80 | 70.03 | 51.57 | 42.26 | 65.41 | |||||||||||||
| 1992 | 43.90 | 53.48 | 61.71 | 71.40 | 83.77 | 85.63 | 89.71 | 91.90 | 83.13 | 69.26 | 48.20 | 36.90 | 68.25 | |||||||||||||
| 1993 | 32.13 | 38.86 | 57.19 | 60.93 | 75.97 | 76.83 | 84.06 | 86.42 | 84.13 | 67.19 | 49.03 | 41.84 | 62.88 | |||||||||||||
| 1994 | 46.45 | 45.04 | 61.52 | 66.57 | 76.52 | 86.87 | 96.13 | 93.23 | 84.07 | 65.61 | 40.93 | 35.00 | 66.49 | |||||||||||||
| 1995 | 41.55 | 58.29 | 52.71 | 60.13 | 67.87 | 78.27 | 89.81 | 88.58 | 83.10 | 68.42 | 61.07 | 44.94 | 66.23 | |||||||||||||
| 1996 | 43.61 | 49.17 | 58.00 | 65.43 | 71.65 | 84.00 | 93.58 | 92.48 | 79.67 | 66.84 | 51.83 | 43.10 | 66.61 | |||||||||||||
| 1997 | 40.61 | 47.61 | 60.65 | 61.67 | 80.03 | 81.77 | 91.42 | 92.90 | 83.37 | 67.87 | 55.83 | 40.65 | 67.03 | |||||||||||||
| 1998 | 45.74 | 44.18 | 55.45 | 60.97 | 65.74 | 77.37 | 96.68 | 96.00 | 81.13 | 65.35 | 48.47 | 37.52 | 64.55 | |||||||||||||
| 1999 | 43.00 | 46.79 | 55.84 | 61.43 | 74.26 | 82.27 | 95.26 | 89.00 | ----- | z | 70.23 | 57.27 | 43.00 | 65.30 | ||||||||||||
| 2000 | 42.03 | 47.07 | 54.55 | 69.53 | 75.03 | 87.43 | 90.94 | 90.52 | 78.80 | 62.84 | 44.20 | 41.55 | 65.37 | |||||||||||||
| 2001 | 38.74 | 41.71 | 59.10 | 61.07 | 80.94 | 83.90 | 90.26 | 91.71 | 81.07 | 68.74 | 50.47 | ----- | z | 67.97 | ||||||||||||
| 2002 | ----- | z | ----- | z | ----- | z | 64.73 | 73.10 | 84.73 | ----- | z | ----- | z | 81.07 | 65.35 | ----- | z | 44.35 | 68.89 | |||||||
| 2003 | ----- | z | 47.11 | 57.68 | 57.83 | 72.97 | 86.40 | 95.71 | 88.81 | 81.80 | 70.81 | 45.53 | 40.52 | 67.74 | ||||||||||||
| 2004 | 38.45 | 42.41 | 65.55 | 68.87 | 72.42 | 83.27 | 92.35 | 88.29 | 79.70 | 63.74 | 49.27 | 45.84 | 65.85 | |||||||||||||
| 2005 | 37.32 | 43.18 | 62.39 | 63.27 | 71.48 | 75.07 | ----- | z | ----- | z | 75.47 | 63.23 | 50.57 | 39.94 | 58.19 | |||||||||||
| 2006 | 43.68 | 45.07 | 45.03 | ----- | z | 72.86 | j | 82.10 | ----- | z | ----- | z | ----- | z | 58.93 | p | 51.17 | 42.00 | 51.51 | |||||||
| 2007 | 40.68 | ----- | z | ----- | z | 65.08 | e | 77.52 | 87.83 | f | 93.06 | 89.84 | 76.20 | 61.00 | t | 51.37 | 38.19 | 66.49 | ||||||||
| 2008 | 35.23 | 46.62 | 52.81 | 58.57 | 69.10 | 79.89 | k | 88.97 | 87.63 | l | 78.60 | 63.16 | 52.93 | 37.94 | 58.39 | |||||||||||
| 2009 | 42.39 | 49.18 | 53.10 | 59.97 | 74.39 | 76.17 | ----- | z | 84.67 | g | 80.40 | 58.90 | 48.47 | ----- | z | 60.33 | ||||||||||
| 2010 | 47.19 | 53.46 | 52.18 | c | 59.55 | a | 60.77 | 75.70 | 88.87 | 83.32 | 77.57 | 66.16 | 49.57 | 49.61 | 63.66 | |||||||||||
| 2011 | 45.29 | x | ----- | z | ----- | z | ----- | z | ----- | z | 83.18 | s | 87.00 | b | 87.56 | d | 82.60 | 62.52 | 47.62 | a | 40.97 | a | 68.04 | |||
| 2012 | 43.35 | 46.72 | 53.06 | m | 0.00 | 57.03 | 81.07 | 90.80 | a | 90.10 | 82.40 | 66.65 | 51.23 | 38.35 | 58.88 | |||||||||||
| 2013 | 25.77 | 43.57 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 34.67 | |||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 39.86 | 46.89 | 54.93 | 62.02 | 72.72 | 82.52 | 92.21 | 89.98 | 80.45 | 67.02 | 50.63 | 41.12 | 65.26 | |||||||||||||
| S.D. | 4.50 | 4.58 | 4.12 | 9.67 | 5.02 | 3.92 | 2.92 | 3.23 | 3.75 | 4.18 | 3.82 | 3.77 | 1.38 | |||||||||||||
| SKEW | -0.57 | 0.25 | 0.26 | -4.74 | -0.40 | -0.14 | -0.49 | -0.60 | -0.74 | 0.03 | 0.02 | -0.03 | -0.20 | |||||||||||||
| MAX | 47.45 | 58.29 | 65.55 | 72.73 | 83.77 | 89.43 | 97.00 | 96.00 | 86.37 | 76.65 | 61.07 | 50.06 | 68.25 | |||||||||||||
| MIN | 25.77 | 38.61 | 45.03 | 0.00 | 57.03 | 75.07 | 84.06 | 81.03 | 69.97 | 58.84 | 40.93 | 32.90 | 62.52 | |||||||||||||
| NO YRS | 56 | 56 | 54 | 56 | 56 | 54 | 52 | 53 | 55 | 54 | 57 | 57 | 44 | |||||||||||||