YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1965 | ----- | z | 22.04 | 25.59 | b | 43.60 | 51.30 | a | 59.62 | a | 65.19 | 61.71 | 53.90 | 40.35 | 35.43 | 27.71 | 44.22 | a | ||||||||
1966 | 13.41 | n | 22.00 | 33.03 | 40.04 | b | 50.84 | 61.17 | 68.90 | b | 62.74 | 55.03 | 40.65 | 31.70 | 20.23 | 44.21 | a | |||||||||
1967 | 23.19 | 24.32 | 34.97 | 44.77 | 49.58 | 60.43 | 65.52 | 60.58 | 55.43 | 43.81 | 31.20 | 23.35 | 43.10 | |||||||||||||
1968 | 25.19 | 24.79 | 31.94 | 38.57 | 48.90 | 61.80 | 64.61 | 62.42 | 55.13 | 45.13 | 32.20 | 21.58 | 42.69 | |||||||||||||
1969 | 26.96 | c | 27.04 | 26.39 | 43.43 | 50.13 | a | 61.47 | 66.06 | 65.55 | 58.07 | b | 41.71 | 29.17 | 25.48 | 43.46 | ||||||||||
1970 | 20.10 | 30.39 | 33.52 | 39.23 | 54.48 | 60.47 | 67.45 | 65.03 | 51.97 | 37.87 | 32.83 | 29.71 | 43.59 | |||||||||||||
1971 | 21.81 | 27.29 | 30.94 | 41.33 | 48.10 | 62.83 | 65.35 | 59.61 | 55.03 | 41.87 | 32.20 | 26.48 | 42.74 | |||||||||||||
1972 | 22.42 | 24.79 | 36.65 | 49.73 | 53.87 | 61.03 | 61.55 | 61.84 | 55.33 | 44.97 | ----- | z | 25.84 | 45.27 | a | |||||||||||
1973 | 22.93 | a | 28.39 | 35.00 | 35.10 | 52.90 | b | 62.07 | 65.33 | a | 62.10 | 55.55 | a | 45.29 | 36.80 | 24.29 | 43.81 | |||||||||
1974 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 64.20 | j | 64.71 | 59.94 | 52.90 | 43.39 | 31.27 | 22.84 | 45.84 | f | ||||||
1975 | 22.71 | 24.89 | 31.77 | ----- | z | ----- | z | 59.23 | 63.71 | 62.16 | 50.43 | 37.52 | 35.41 | a | 23.23 | 41.11 | b | |||||||||
1976 | 22.87 | a | 32.41 | 38.13 | ----- | z | 49.81 | 59.93 | 62.10 | 62.84 | 55.13 | 39.32 | 26.10 | 22.77 | a | 42.86 | a | |||||||||
1977 | 15.17 | a | 27.75 | 32.23 | 44.37 | 55.00 | 63.60 | 66.48 | 65.52 | 58.73 | 44.61 | 32.17 | a | ----- | z | 45.97 | a | |||||||||
1978 | 23.26 | 23.39 | ----- | z | ----- | z | 50.10 | 62.13 | 67.10 | 62.39 | 56.50 | 44.80 | a | 37.40 | ----- | z | 47.45 | c | ||||||||
1979 | ----- | z | 27.00 | 33.65 | 41.57 | ----- | z | 57.45 | a | ----- | z | 61.06 | ----- | z | ----- | z | ----- | z | ----- | z | 44.14 | 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 | 25.83 | a | 25.83 | k |
2005 | 26.93 | a | 32.14 | 31.74 | 42.14 | a | 51.60 | a | 60.14 | b | 65.32 | 64.03 | 59.69 | a | 45.35 | 30.79 | a | 20.86 | c | 44.23 | ||||||
2006 | 23.50 | c | 19.71 | d | 34.57 | a | 46.75 | b | 54.42 | 63.87 | 67.26 | 65.93 | a | 52.90 | a | 42.55 | b | 31.29 | b | 22.90 | 43.80 | |||||
2007 | 17.74 | 23.96 | b | 34.28 | b | 39.59 | a | 51.10 | 59.24 | a | 65.52 | 67.39 | 59.79 | a | 43.24 | b | 30.59 | c | 24.21 | c | 43.05 | |||||
2008 | 21.86 | b | 24.88 | c | 31.07 | b | 37.74 | c | 50.43 | a | 60.10 | a | 65.90 | 63.26 | 54.97 | 43.33 | d | 32.48 | a | 22.28 | f | 44.19 | a | |||
2009 | 20.69 | b | 28.33 | a | 34.73 | e | 40.28 | a | 52.48 | b | 61.43 | 66.61 | 64.00 | 54.57 | 42.00 | h | 32.19 | d | 17.17 | b | 42.95 | a | ||||
2010 | 20.61 | c | 22.91 | f | 32.43 | h | 45.70 | c | 50.22 | d | 66.47 | 67.61 | 65.26 | 60.80 | 46.48 | d | 30.72 | e | 26.75 | c | 48.06 | b | ||||
2011 | 19.69 | e | 21.53 | i | 34.92 | e | 41.92 | d | 48.72 | f | 63.78 | c | 70.48 | b | 70.23 | a | 56.93 | c | 44.04 | c | 33.61 | g | 23.96 | h | 50.25 | d |
2012 | ----- | z | 27.42 | j | 37.96 | h | 46.40 | e | 53.89 | c | 65.53 | 69.29 | 66.06 | 56.47 | 42.90 | 33.77 | 23.29 | 50.85 | c | |||||||
2013 | ----- | z | 25.79 | 31.92 | g | 37.17 | 50.81 | 59.33 | 62.35 | 67.00 | 62.40 | 42.10 | 33.17 | a | 22.13 | 46.22 | b | |||||||||
2014 | 21.13 | 25.57 | 29.00 | e | 41.37 | c | 51.53 | a | 62.63 | 66.45 | 65.42 | 59.20 | 46.06 | 28.67 | 24.71 | 43.48 | ||||||||||
2015 | 24.16 | 26.36 | 34.32 | 42.00 | 50.68 | 62.97 | 66.06 | 64.29 | 62.20 | ----- | z | ----- | z | ----- | z | 48.12 | 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 | 25.78 | m | 28.40 | c | 31.63 | a | 40.70 | 49.55 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 37.57 | h | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 22.15 | 26.16 | 32.73 | 41.89 | 51.38 | 61.55 | 65.88 | 63.78 | 56.36 | 42.93 | 32.16 | 23.87 | 43.39 | |||||||||||||
S.D. | 2.80 | 3.11 | 3.00 | 3.42 | 1.92 | 2.10 | 2.11 | 2.51 | 3.09 | 2.48 | 2.60 | 2.78 | 0.50 | |||||||||||||
SKEW | -0.47 | 0.18 | -0.75 | 0.26 | 0.45 | 0.44 | -0.06 | 0.45 | 0.31 | -0.71 | 0.04 | -0.19 | 0.03 | |||||||||||||
MAX | 26.96 | 32.41 | 38.13 | 49.73 | 55.00 | 66.47 | 70.48 | 70.23 | 62.40 | 46.48 | 37.40 | 29.71 | 44.23 | |||||||||||||
MIN | 15.17 | 19.71 | 25.59 | 35.10 | 48.10 | 57.45 | 61.55 | 59.61 | 50.43 | 37.52 | 26.10 | 17.17 | 42.69 | |||||||||||||
YRS | 20 | 23 | 22 | 23 | 23 | 25 | 25 | 26 | 25 | 23 | 22 | 21 | 10 |