YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 92.38 | n | 98.03 | 93.52 | 85.73 | 68.16 | 52.47 | 41.84 | 73.29 | f | ||||||
1961 | 41.68 | 50.96 | 54.19 | d | 65.97 | 76.39 | 91.97 | 96.71 | 92.06 | 76.97 | 64.77 | 44.53 | 40.03 | 66.35 | ||||||||||||
1962 | 34.35 | 43.39 | 50.26 | 70.13 | 72.71 | 85.07 | 93.42 | 94.78 | h | 85.53 | 70.10 | 55.10 | a | 40.37 | a | 63.68 | a | |||||||||
1963 | 37.26 | 53.92 | b | 53.73 | a | 59.67 | 79.32 | 76.10 | i | 97.27 | t | 93.32 | c | 85.00 | a | 74.33 | a | 51.87 | 35.42 | 62.38 | b | |||||
1964 | 37.83 | b | 41.81 | b | 49.77 | 61.52 | a | 72.24 | b | 80.70 | 97.73 | a | 92.67 | a | 82.67 | ----- | z | 51.07 | 45.19 | 64.84 | a | |||||
1965 | 44.48 | 49.46 | 53.03 | ----- | z | 70.52 | 83.20 | 93.38 | b | 88.42 | 74.67 | 71.71 | 57.13 | 37.52 | 65.77 | a | ||||||||||
1966 | 40.74 | 43.71 | 58.32 | 67.00 | 84.00 | s | 87.90 | 97.00 | a | 94.10 | 84.63 | 67.23 | 56.73 | 34.39 | 66.52 | a | ||||||||||
1967 | 39.77 | 50.82 | 59.29 | 60.07 | 71.71 | 75.97 | a | 94.30 | a | 94.35 | 80.50 | 68.61 | 55.32 | b | 35.84 | 65.55 | ||||||||||
1968 | 35.89 | d | 51.10 | h | 56.42 | 57.63 | 72.19 | 81.67 | 94.32 | 85.55 | 77.83 | 66.40 | a | 52.74 | c | 37.77 | a | 65.31 | a | |||||||
1969 | 44.67 | a | 42.65 | b | 48.56 | d | 66.68 | e | 82.96 | d | 80.00 | i | 95.07 | d | 97.33 | g | ----- | z | 64.61 | c | 51.35 | d | 40.37 | a | 59.66 | c |
1970 | 42.96 | f | 51.00 | a | 52.76 | b | 57.78 | g | 76.73 | e | 83.77 | 93.61 | 94.68 | 79.97 | 62.94 | 54.63 | 35.61 | 68.57 | b | |||||||
1971 | 43.80 | a | 46.96 | 56.68 | 63.33 | 72.19 | 85.80 | 95.10 | 94.03 | 79.90 | 62.00 | 48.30 | 39.23 | 65.61 | ||||||||||||
1972 | 44.52 | 52.72 | 67.03 | 66.63 | 78.00 | 87.63 | 96.55 | 91.35 | 79.97 | 66.42 | 48.60 | 34.68 | 67.84 | |||||||||||||
1973 | 30.35 | 43.18 | 50.74 | 61.37 | 77.74 | 86.77 | 94.03 | 94.97 | 82.73 | 70.81 | 51.70 | 46.81 | 65.93 | |||||||||||||
1974 | 41.65 | 49.11 | 62.68 | 65.77 | 79.74 | 93.23 | 96.00 | 93.16 | 86.07 | 67.13 | 54.57 | 40.81 | 69.16 | |||||||||||||
1975 | 39.81 | 47.46 | 53.90 | b | 57.07 | 71.90 | 83.20 | 95.29 | 91.87 | 84.33 | 69.35 | 49.37 | 45.81 | 65.78 | ||||||||||||
1976 | 42.68 | 50.10 | 52.48 | 64.63 | 78.77 | 86.43 | 96.81 | 90.03 | 82.37 | 66.90 | 56.10 | 41.81 | 67.43 | |||||||||||||
1977 | 40.48 | 51.68 | 53.39 | 70.63 | 68.90 | 91.47 | 95.10 | 92.16 | 84.97 | a | 71.65 | 57.43 | 52.39 | 69.19 | ||||||||||||
1978 | 45.45 | 49.61 | 59.87 | 64.07 | 73.90 | 87.00 | 95.74 | 91.48 | 80.63 | 71.71 | 48.53 | 37.58 | 67.13 | |||||||||||||
1979 | 30.47 | a | 43.18 | 54.90 | b | ----- | z | 75.83 | b | 87.38 | d | 94.57 | a | 90.23 | a | 85.93 | 70.96 | c | 44.59 | c | 45.42 | g | 67.80 | b | ||
1980 | 41.67 | a | 45.83 | 52.82 | c | 67.41 | c | 69.63 | a | 84.24 | e | 95.24 | b | 91.81 | d | 80.92 | e | 68.48 | 54.00 | a | 43.87 | 66.33 | ||||
1981 | 36.76 | b | 52.31 | b | 55.19 | d | 66.00 | f | 72.75 | g | 89.53 | 96.32 | c | 94.79 | c | 85.59 | c | 62.24 | b | 56.43 | b | 51.16 | f | 69.91 | c | |
1982 | 41.16 | 48.15 | b | 54.77 | a | 63.11 | c | 72.44 | d | 82.97 | a | 91.21 | b | 93.30 | a | 75.90 | 58.65 | 47.13 | 37.90 | 63.89 | ||||||
1983 | 42.03 | a | 47.18 | 53.74 | 54.73 | 68.55 | 81.07 | 92.03 | 89.13 | 82.07 | 67.06 | 51.97 | 36.87 | 63.87 | ||||||||||||
1984 | 25.23 | 27.93 | 46.74 | 59.07 | 75.58 | 80.63 | 92.10 | 89.03 | 80.10 | 60.42 | 51.76 | a | 37.00 | b | 60.47 | |||||||||||
1985 | 31.68 | 38.18 | 50.84 | 69.17 | 77.13 | 87.83 | 95.90 | 92.68 | 76.63 | 65.32 | 48.37 | 29.61 | 63.61 | |||||||||||||
1986 | 36.06 | 52.04 | 63.27 | a | 62.33 | 73.52 | 91.60 | 92.32 | 94.90 | 75.33 | 64.10 | 53.90 | 38.94 | 66.53 | ||||||||||||
1987 | 32.42 | 44.86 | 54.87 | 71.73 | 76.13 | 88.43 | 90.45 | 90.71 | 83.07 | 69.52 | 48.03 | 38.26 | 65.71 | |||||||||||||
1988 | 32.39 | 42.93 | 54.55 | 65.90 | 75.13 | 90.13 | 97.13 | 92.65 | 79.53 | 74.68 | 53.50 | 37.76 | b | 66.36 | ||||||||||||
1989 | 34.19 | e | 37.11 | 60.64 | c | 70.63 | 74.29 | 83.52 | a | 97.79 | c | 92.23 | e | 81.89 | b | 68.32 | 53.28 | a | 41.27 | a | 66.26 | |||||
1990 | 45.52 | 43.15 | a | 56.61 | 69.07 | a | 72.00 | a | 87.45 | a | 95.30 | a | 92.59 | b | 85.16 | e | 68.55 | 52.23 | 32.53 | a | 66.68 | |||||
1991 | 35.09 | h | 53.35 | h | 53.36 | f | 61.65 | d | 69.84 | f | 83.64 | e | 94.62 | b | 93.52 | b | 79.58 | d | 70.35 | k | 49.38 | d | 35.93 | a | 71.19 | e |
1992 | 35.34 | b | 49.48 | d | 60.00 | a | 73.00 | a | 80.31 | b | 87.24 | e | 90.43 | c | 93.73 | a | 81.61 | b | 71.17 | b | 44.69 | a | 38.71 | c | 67.14 | |
1993 | 29.94 | 35.11 | a | 53.63 | a | 62.97 | a | 77.34 | b | 80.47 | 88.61 | 90.45 | 82.19 | d | 65.50 | c | 44.63 | 40.76 | b | 62.63 | ||||||
1994 | 47.07 | a | 45.78 | a | 58.93 | b | 64.43 | b | 78.13 | a | 89.60 | 96.90 | a | 95.35 | 86.65 | d | 63.81 | 42.85 | d | 41.77 | 67.61 | |||||
1995 | 42.48 | d | 54.71 | 56.53 | a | 62.70 | c | 67.93 | a | 77.90 | 93.21 | b | 93.87 | 86.38 | f | 69.07 | c | 59.93 | a | 46.43 | a | 65.89 | a | |||
1996 | 46.50 | a | 44.38 | 57.38 | b | 65.61 | b | 74.40 | a | 91.08 | d | 96.79 | b | 93.80 | a | 79.15 | c | 68.43 | c | 53.41 | a | 45.86 | b | 68.07 | ||
1997 | 41.00 | 44.56 | a | 60.37 | a | 60.52 | a | 77.43 | a | 85.37 | 91.22 | d | 95.14 | b | 81.57 | 68.10 | 54.17 | a | 38.61 | c | 66.50 | |||||
1998 | 48.52 | 46.14 | 56.79 | b | 61.31 | a | 73.13 | 79.60 | 97.65 | 96.10 | 83.41 | a | 64.32 | 55.33 | 41.55 | 66.99 | ||||||||||
1999 | 48.35 | 50.57 | 61.45 | 57.93 | 71.74 | 85.57 | 96.68 | 93.39 | 81.10 | a | 73.16 | 60.87 | 45.16 | 68.83 | ||||||||||||
2000 | 47.45 | 50.38 | 56.23 | 70.93 | 79.81 | 90.07 | 99.29 | ----- | z | ----- | z | ----- | z | 44.33 | 43.84 | 64.70 | c | |||||||||
2001 | 37.26 | 45.96 | a | 75.16 | l | ----- | z | ----- | z | 79.64 | b | 98.58 | g | 97.80 | a | 80.75 | b | 73.66 | b | 55.60 | 35.87 | 63.32 | d | |||
2002 | 40.83 | b | 41.82 | ----- | z | 68.07 | ----- | z | 90.86 | b | 99.50 | a | 94.14 | c | 82.10 | 62.29 | 49.93 | a | 44.65 | 67.42 | b | |||||
2003 | 49.90 | 45.87 | e | 59.66 | b | 64.86 | b | 76.65 | 68.80 | y | 102.16 | 96.16 | 84.93 | a | 75.37 | a | 47.75 | b | 45.46 | c | 68.07 | a | ||||
2004 | 32.13 | 39.66 | 62.59 | b | 66.97 | a | 78.77 | a | 89.14 | a | ----- | z | 91.00 | ----- | z | 65.48 | 48.68 | b | 42.52 | 61.69 | b | |||||
2005 | ----- | z | 46.37 | a | 56.19 | 64.21 | b | 75.06 | 82.37 | 99.81 | 91.00 | a | ----- | z | ----- | z | 53.63 | 43.97 | 68.07 | c | ||||||
2006 | 45.90 | a | 46.57 | 55.95 | j | 68.17 | 78.48 | 90.60 | 100.13 | 94.55 | 79.00 | 64.32 | 54.60 | ----- | z | 72.23 | b | |||||||||
2007 | ----- | z | 50.82 | 62.00 | 67.07 | ----- | z | ----- | z | 100.94 | 96.76 | b | 82.97 | a | 64.43 | a | 55.10 | a | 35.36 | c | 68.38 | c | ||||
2008 | 37.24 | n | 45.00 | 54.07 | a | 57.43 | i | 71.97 | b | 88.61 | b | 96.71 | 94.43 | a | 82.23 | 66.87 | 54.80 | 41.32 | 69.60 | b | ||||||
2009 | 41.81 | 48.61 | 54.55 | 61.60 | 77.45 | 79.34 | a | 94.23 | 91.74 | 85.13 | 61.58 | 51.90 | a | 30.84 | 64.90 | |||||||||||
2010 | 36.45 | i | 44.68 | 53.68 | 62.30 | 68.13 | 85.27 | 94.97 | 92.94 | 87.20 | 66.74 | 47.83 | 40.45 | 67.65 | a | |||||||||||
2011 | 33.65 | 43.57 | 54.84 | 59.07 | a | 65.00 | 81.70 | 93.68 | 95.52 | 82.62 | i | 67.06 | 51.00 | 32.90 | 61.64 | a | ||||||||||
2012 | 43.19 | 45.41 | 60.06 | 68.83 | 76.68 | 89.87 | 95.74 | 95.00 | c | ----- | z | 68.68 | 56.30 | 40.71 | 67.32 | a | ||||||||||
2013 | 20.55 | 31.71 | 56.29 | 62.80 | 75.00 | f | 91.52 | c | 97.31 | b | 94.16 | 78.47 | 63.07 | a | 50.11 | l | 31.48 | 62.74 | b | |||||||
2014 | 38.11 | c | 50.96 | 59.48 | b | 65.81 | d | 74.17 | g | 86.82 | b | 97.83 | a | 88.97 | 84.90 | 72.03 | a | 53.00 | j | 46.29 | 69.12 | b | ||||
2015 | 42.81 | 55.96 | 62.39 | 67.20 | 71.19 | 92.59 | a | 92.81 | 93.94 | 85.70 | 71.68 | 47.97 | 39.94 | 68.68 | ||||||||||||
2016 | 31.27 | t | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 39.34 | 46.14 | 56.26 | 64.56 | 74.59 | 85.99 | 95.47 | 92.93 | 81.94 | 67.50 | 51.80 | 39.77 | 66.24 | |||||||||||||
S.D. | 6.31 | 5.49 | 4.16 | 4.18 | 3.85 | 4.26 | 2.76 | 2.31 | 3.16 | 3.85 | 4.15 | 4.64 | 1.98 | |||||||||||||
SKEW | -0.69 | -0.99 | 0.19 | -0.13 | -0.25 | -0.30 | -0.04 | -0.68 | -0.40 | -0.00 | -0.22 | 0.08 | -0.89 | |||||||||||||
MAX | 49.90 | 55.96 | 67.03 | 73.00 | 82.96 | 93.23 | 102.16 | 97.80 | 87.20 | 75.37 | 60.87 | 52.39 | 69.19 | |||||||||||||
MIN | 20.55 | 27.93 | 46.74 | 54.73 | 65.00 | 75.97 | 88.61 | 85.55 | 74.67 | 58.65 | 42.85 | 29.61 | 60.47 | |||||||||||||
YRS | 49 | 53 | 51 | 49 | 47 | 51 | 53 | 53 | 49 | 52 | 54 | 53 | 29 |