YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1965 | ----- | z | 39.50 | 42.48 | b | 60.10 | 65.67 | a | 73.62 | a | 79.39 | 75.83 | a | 68.72 | 59.18 | 51.87 | 42.76 | 59.92 | a | |||||||
1966 | 25.29 | n | 37.34 | 50.87 | 57.41 | c | 68.03 | 74.80 | 83.43 | b | 74.47 | 70.81 | a | 58.31 | 50.79 | a | 34.88 | a | 60.10 | a | ||||||
1967 | 40.95 | 41.55 | 54.15 | a | 61.71 | a | 65.45 | c | 75.02 | 78.29 | 74.44 | 69.27 | 61.08 | 47.08 | 34.94 | 58.66 | ||||||||||
1968 | 39.61 | 39.93 | 46.71 | 54.82 | 65.19 | 78.22 | 77.76 | 76.23 | 68.87 | 61.98 | 45.25 | 38.21 | 57.73 | |||||||||||||
1969 | 43.46 | c | 41.18 | 40.42 | 59.08 | 67.02 | b | 76.12 | 80.52 | 79.81 | 71.16 | b | 55.42 | 44.67 | 40.53 | 58.28 | ||||||||||
1970 | 34.83 | a | 46.77 | 46.97 | 55.80 | 69.53 | 75.63 | 79.77 | 79.40 | 67.22 | 51.80 | a | 46.88 | 44.72 | b | 58.28 | ||||||||||
1971 | 36.85 | 42.30 | 48.64 | c | 57.23 | 64.98 | 76.95 | 79.52 | 73.48 | 67.68 | 57.29 | 46.87 | 39.69 | 57.63 | ||||||||||||
1972 | 37.82 | 44.69 | 56.55 | 66.98 | 68.56 | 75.98 | 75.97 | 74.58 | 68.15 | 58.66 | ----- | z | 36.90 | 60.44 | a | |||||||||||
1973 | 34.88 | a | 39.39 | 47.15 | 49.03 | 67.98 | b | 77.02 | 79.38 | a | 76.39 | 70.48 | a | 60.84 | 53.67 | 37.47 | 57.81 | |||||||||
1974 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 79.97 | j | 79.47 | 74.42 | 67.88 | b | 58.63 | e | 47.10 | 34.53 | 60.34 | f | ||||
1975 | 33.02 | a | 37.54 | 47.56 | ----- | z | ----- | z | 75.03 | 76.48 | 77.31 | 65.77 | 53.85 | 50.66 | a | 39.56 | 55.68 | b | ||||||||
1976 | 35.82 | a | 47.10 | 52.45 | ----- | z | 65.90 | 76.50 | 77.24 | 77.61 | 69.53 | a | 55.32 | 43.27 | 40.82 | a | 58.32 | a | ||||||||
1977 | 31.38 | a | 44.41 | 48.71 | 59.05 | 69.53 | 80.10 | 81.55 | 78.97 | 75.79 | a | 62.03 | 50.10 | a | ----- | z | 61.97 | a | ||||||||
1978 | 32.95 | 37.68 | ----- | z | ----- | z | 65.55 | 76.57 | 83.03 | 77.48 | 70.37 | 61.23 | a | 48.10 | ----- | z | 61.44 | c | ||||||||
1979 | ----- | z | 42.70 | 49.82 | 57.28 | ----- | z | 72.40 | a | ----- | z | 74.71 | ----- | z | ----- | z | ----- | z | ----- | z | 59.38 | g | ||||
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1981 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1982 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1983 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1984 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1985 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1986 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1987 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1988 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1989 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1990 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1991 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1992 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1993 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1994 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1995 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1996 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1997 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1998 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1999 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2000 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2001 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2002 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2003 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2004 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 40.08 | a | 40.08 | k |
2005 | 41.31 | b | 44.81 | a | 47.77 | a | 57.27 | b | 65.38 | a | 76.82 | b | 80.35 | 77.19 | 74.17 | a | 60.35 | 49.98 | b | 39.30 | d | 59.56 | ||||
2006 | 43.27 | c | 41.12 | d | 50.28 | a | 63.18 | b | 70.92 | 79.85 | 81.52 | 77.82 | a | 66.50 | a | 58.48 | b | 49.54 | b | 37.37 | a | 59.99 | ||||
2007 | 31.24 | 40.81 | b | 51.17 | b | 55.86 | b | 65.65 | 74.62 | a | 80.23 | 81.74 | 74.71 | a | 62.03 | b | 48.44 | c | 37.32 | c | 58.65 | |||||
2008 | 36.81 | b | 42.02 | c | 48.59 | b | 55.35 | c | 66.05 | a | 77.17 | a | 78.03 | 76.97 | 69.48 | 58.28 | d | 48.66 | a | 38.76 | f | 59.76 | a | |||
2009 | 39.33 | b | 46.59 | a | 51.50 | e | 56.12 | a | 66.91 | b | 76.83 | 80.94 | 78.76 | 69.12 | 55.74 | h | 49.94 | d | 31.52 | d | 58.87 | a | ||||
2010 | 35.93 | c | 33.95 | f | 46.00 | h | 59.81 | c | 65.11 | d | 81.37 | 80.71 | 79.79 | 76.15 | 63.46 | d | 48.08 | e | 41.43 | c | 63.18 | b | ||||
2011 | 37.50 | e | 37.63 | i | 52.31 | e | 60.33 | d | 66.85 | g | 80.91 | c | 85.71 | b | 84.87 | a | 72.00 | c | 59.84 | c | 48.48 | h | 33.24 | h | 66.68 | d |
2012 | ----- | z | 41.86 | k | 55.57 | i | 63.30 | e | 69.18 | c | 81.10 | 83.40 | 81.24 | 72.38 | 59.16 | 51.77 | 40.13 | 66.85 | c | |||||||
2013 | ----- | z | 41.02 | 49.42 | g | 55.31 | a | 67.03 | 76.18 | 76.03 | 81.60 | 74.48 | 57.56 | 46.76 | a | 36.89 | 61.29 | b | ||||||||
2014 | 38.11 | 40.82 | 46.73 | e | 57.83 | c | 67.83 | a | 77.22 | 79.71 | 80.71 | 71.63 | 62.19 | 44.55 | 38.06 | 58.78 | ||||||||||
2015 | 36.52 | 41.66 | 51.23 | 58.63 | 63.61 | 77.37 | 80.24 | 78.10 | 76.12 | ----- | z | ----- | z | ----- | z | 62.61 | c | |||||||||
2016 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2017 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2018 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2019 | 41.06 | m | 43.70 | c | 46.25 | a | 56.75 | 64.20 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 52.72 | h | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 37.08 | 41.94 | 49.01 | 58.18 | 66.75 | 76.94 | 79.95 | 77.84 | 70.74 | 59.00 | 48.36 | 38.43 | 58.54 | |||||||||||||
S.D. | 3.54 | 2.84 | 3.61 | 3.60 | 1.90 | 2.29 | 2.39 | 2.79 | 3.07 | 2.89 | 2.65 | 3.02 | 0.77 | |||||||||||||
SKEW | 0.14 | 0.23 | -0.30 | 0.11 | 0.47 | 0.39 | 0.33 | 0.49 | 0.40 | -0.73 | -0.03 | -0.18 | 0.62 | |||||||||||||
MAX | 43.46 | 47.10 | 56.55 | 66.98 | 70.92 | 81.37 | 85.71 | 84.87 | 76.15 | 63.46 | 53.67 | 44.72 | 59.99 | |||||||||||||
MIN | 31.24 | 37.34 | 40.42 | 49.03 | 63.61 | 72.40 | 75.97 | 73.48 | 65.77 | 51.80 | 43.27 | 31.52 | 57.63 | |||||||||||||
YRS | 20 | 23 | 22 | 23 | 23 | 25 | 25 | 26 | 25 | 23 | 22 | 21 | 10 |