YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1963 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 52.10 | 60.29 | 62.97 | 52.57 | 42.55 | k | 30.80 | 19.97 | 46.45 | f | ||||||
1964 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1965 | 24.61 | 22.89 | 26.55 | 40.80 | 41.84 | 51.27 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 34.66 | f | ||||||
1966 | 18.33 | a | 14.22 | a | ----- | z | ----- | z | 47.48 | 52.70 | 62.48 | 57.00 | 51.89 | b | 37.90 | 34.90 | 22.55 | 39.95 | b | |||||||
1967 | 23.58 | 26.64 | 34.00 | 34.07 | 43.58 | 50.80 | 61.03 | 59.45 | 50.55 | a | 36.87 | 30.13 | 17.03 | 38.98 | ||||||||||||
1968 | 14.87 | a | 28.24 | 30.77 | 32.70 | 41.71 | 50.83 | a | 59.26 | 53.61 | 44.33 | 36.42 | 26.87 | 19.48 | 36.59 | |||||||||||
1969 | 22.94 | 21.18 | 24.93 | a | 35.57 | 47.16 | 50.23 | 58.68 | 57.97 | a | 52.20 | 34.10 | 26.27 | 22.29 | 37.79 | |||||||||||
1970 | 23.84 | 27.39 | 28.23 | 31.53 | 42.32 | 52.30 | 59.19 | 59.93 | a | 42.83 | 32.48 | 32.53 | 20.35 | 37.75 | ||||||||||||
1971 | 23.17 | a | 24.04 | 28.26 | 34.63 | 43.16 | 50.10 | 58.81 | 59.63 | a | 43.67 | 34.81 | 27.40 | 16.65 | 37.03 | |||||||||||
1972 | 19.94 | 24.86 | 32.23 | 34.43 | 43.90 | 53.73 | 57.26 | 56.81 | 47.17 | a | 41.16 | 28.67 | 13.55 | 37.81 | ||||||||||||
1973 | 9.81 | 20.82 | 29.65 | 33.57 | 44.97 | 51.27 | 58.48 | 56.45 | b | 45.45 | a | 37.35 | 29.90 | 22.65 | 36.70 | |||||||||||
1974 | 18.52 | 19.79 | 33.29 | 34.53 | 42.45 | 52.43 | 60.03 | 53.65 | 46.40 | 39.32 | 28.90 | 20.00 | 37.44 | |||||||||||||
1975 | 15.65 | 24.54 | 29.68 | 32.40 | 39.19 | 47.87 | 60.61 | 53.97 | 46.63 | 36.52 | 24.90 | 22.81 | 36.23 | |||||||||||||
1976 | 18.81 | 22.00 | 23.10 | 35.00 | 45.26 | 46.93 | 59.13 | 53.32 | 49.93 | 34.39 | 25.90 | 15.06 | 35.74 | |||||||||||||
1977 | 15.94 | 20.82 | 25.13 | 37.80 | 40.84 | 56.07 | 58.35 | 57.97 | 48.83 | 38.74 | 28.73 | 28.16 | 38.12 | |||||||||||||
1978 | 26.77 | 28.36 | 34.58 | 36.67 | 41.39 | 49.87 | 57.19 | 54.26 | 47.00 | 38.06 | 27.40 | 17.77 | 38.28 | |||||||||||||
1979 | 13.48 | 22.25 | 31.06 | 36.40 | 45.06 | 52.33 | 58.74 | 57.58 | 51.10 | 40.45 | 23.80 | 21.23 | 37.79 | |||||||||||||
1980 | 23.97 | 25.14 | 29.26 | 38.43 | 44.32 | 51.17 | 62.23 | 58.74 | 50.77 | 38.42 | 30.13 | 25.68 | 39.85 | |||||||||||||
1981 | 25.35 | 25.71 | 33.00 | 42.07 | 45.45 | 54.77 | q | 62.41 | d | 61.93 | b | 54.07 | 39.13 | 33.63 | 27.39 | 40.92 | a | |||||||||
1982 | 20.16 | 20.82 | 32.03 | 34.70 | 44.42 | 52.73 | d | 59.90 | 61.96 | c | 50.00 | f | 37.17 | a | 28.72 | a | 23.82 | c | 37.86 | a | ||||||
1983 | 26.86 | b | 29.30 | a | 34.42 | 34.33 | 43.45 | 52.97 | 60.27 | a | 62.77 | 52.60 | 42.10 | 31.86 | a | 22.10 | 41.09 | |||||||||
1984 | 15.97 | a | 15.96 | a | 27.52 | 34.14 | b | 47.37 | a | 52.50 | 60.16 | 60.03 | 49.60 | 36.26 | 30.77 | 19.24 | b | 37.46 | ||||||||
1985 | 15.27 | a | 15.43 | 27.90 | 41.17 | 47.48 | 55.80 | 62.71 | 58.26 | 47.07 | 38.42 | 28.47 | 20.77 | 38.23 | ||||||||||||
1986 | 21.61 | 32.14 | 36.71 | 38.50 | 45.45 | 59.13 | 59.87 | 62.19 | 48.40 | 38.48 | 31.47 | 21.19 | 41.26 | |||||||||||||
1987 | 18.57 | a | 27.07 | 31.26 | 43.03 | 49.26 | 56.03 | 59.48 | 57.71 | 48.67 | 42.39 | 32.07 | 19.87 | a | 40.45 | |||||||||||
1988 | 18.35 | 23.39 | a | 29.77 | 39.33 | 44.16 | 60.10 | 64.13 | 58.45 | 50.43 | 44.74 | 30.21 | b | 19.84 | 40.24 | |||||||||||
1989 | 13.10 | 16.81 | a | 35.00 | 42.48 | a | 47.45 | 53.47 | 62.29 | 58.68 | 50.50 | 40.70 | a | 29.83 | 21.42 | 39.31 | ||||||||||
1990 | 23.83 | a | 24.79 | 33.81 | 42.40 | 44.42 | 54.77 | 63.16 | 59.61 | 55.17 | 37.94 | 30.30 | 12.87 | 40.25 | ||||||||||||
1991 | 15.97 | 25.86 | 32.42 | 36.83 | 42.70 | a | 53.53 | 61.26 | 60.58 | 49.70 | 38.77 | 29.79 | a | 20.87 | 39.02 | |||||||||||
1992 | 17.34 | b | 29.00 | a | 36.81 | 43.37 | 49.42 | 55.87 | 59.52 | 59.19 | 49.73 | 41.81 | 25.37 | 20.62 | b | 40.67 | ||||||||||
1993 | 17.68 | 22.93 | a | 33.90 | 35.73 | 47.58 | 48.53 | 51.29 | 56.29 | 47.70 | 39.35 | 22.83 | 21.74 | 37.13 | ||||||||||||
1994 | 27.42 | 23.78 | a | 32.39 | 39.47 | 47.94 | 55.52 | a | 61.45 | 59.39 | 49.97 | 36.87 | 24.29 | b | 22.87 | 40.11 | ||||||||||
1995 | 24.40 | a | 29.57 | 32.61 | 36.20 | 43.84 | 50.83 | 58.03 | 58.07 | a | 50.17 | 36.81 | 35.47 | 29.07 | b | 40.42 | ||||||||||
1996 | 24.17 | b | 23.57 | a | 33.00 | 37.13 | 45.61 | 56.07 | 59.39 | 57.32 | 46.14 | a | 38.39 | 30.00 | a | 27.38 | b | 39.85 | ||||||||
1997 | 24.07 | c | 25.19 | a | 30.94 | 35.10 | 46.29 | 53.90 | 58.81 | 60.87 | 53.40 | 37.97 | 31.47 | 21.57 | a | 39.96 | ||||||||||
1998 | 26.83 | a | 30.26 | a | 30.32 | 36.53 | 44.64 | c | 46.97 | 60.68 | 56.33 | a | 54.80 | 40.10 | 32.27 | 17.76 | b | 39.79 | ||||||||
1999 | 22.10 | 23.78 | a | 27.58 | 37.52 | g | 44.10 | b | 54.14 | a | 62.10 | 61.13 | a | 46.63 | 37.68 | 33.62 | a | 22.80 | a | 39.61 | a | |||||
2000 | 26.32 | 30.34 | 31.48 | 43.40 | 49.10 | 56.93 | 64.35 | 63.97 | a | 51.04 | b | 40.65 | 23.80 | 23.72 | b | 42.09 | ||||||||||
2001 | 21.13 | 27.15 | a | 35.42 | 40.60 | 49.77 | 55.07 | b | 64.47 | a | 63.57 | a | 56.00 | a | 43.07 | a | 35.14 | b | 21.23 | 42.72 | ||||||
2002 | 21.16 | 19.50 | b | 30.03 | 42.00 | a | 46.55 | b | 57.15 | c | 65.45 | 59.87 | a | 52.93 | 38.32 | 29.38 | a | 27.77 | a | 40.84 | ||||||
2003 | 30.10 | 27.04 | a | 34.83 | a | 40.72 | a | 48.67 | a | 55.43 | 66.28 | b | 64.45 | b | 50.50 | p | 43.79 | b | 30.25 | b | 27.04 | d | 42.60 | a | ||
2004 | 15.81 | d | 20.90 | 36.04 | c | 42.14 | a | 47.03 | a | 55.73 | d | 62.73 | a | 58.83 | b | 51.00 | 42.15 | e | 30.87 | 24.94 | 40.68 | |||||
2005 | 27.97 | 26.07 | a | 32.50 | a | 38.63 | c | 48.43 | c | 53.43 | 63.57 | a | 61.90 | a | 50.34 | a | 42.87 | 34.00 | b | 23.30 | a | 41.92 | ||||
2006 | 26.43 | a | 24.33 | a | 30.53 | a | 40.72 | a | 50.32 | 58.48 | a | 66.97 | 60.52 | d | 49.16 | e | 40.31 | b | 32.93 | 23.34 | b | 42.01 | ||||
2007 | 13.31 | b | 26.93 | a | 34.82 | c | 41.46 | d | 48.87 | a | 56.86 | a | 67.55 | 65.90 | k | ----- | z | ----- | z | 30.79 | f | 21.71 | 38.94 | d | ||
2008 | 15.68 | 22.59 | 27.00 | q | 31.00 | u | ----- | z | ----- | z | 63.03 | 61.00 | 51.60 | 40.58 | 33.40 | 21.23 | 38.64 | d | ||||||||
2009 | 20.68 | 24.54 | 30.77 | 38.33 | 48.71 | 53.97 | a | 62.84 | 60.32 | 57.93 | 37.26 | ----- | z | ----- | z | 43.53 | b | |||||||||
2010 | 20.39 | 27.25 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 63.97 | 52.87 | 44.97 | 29.41 | c | 28.13 | 38.14 | e | ||||||
2011 | ----- | z | 27.39 | 29.88 | e | 34.96 | b | 42.27 | a | 51.83 | a | 64.90 | 63.45 | 52.83 | ----- | z | ----- | z | ----- | z | 45.94 | d | ||||
2012 | ----- | z | ----- | z | 42.00 | x | 40.70 | 48.13 | 57.04 | c | 68.16 | 68.17 | a | 56.13 | 38.92 | r | 34.74 | g | 30.09 | h | 56.39 | f | ||||
2013 | 10.87 | 19.18 | 31.48 | 37.70 | 47.71 | 56.52 | g | 65.71 | 64.08 | f | 54.86 | h | 38.29 | 31.83 | g | 12.95 | l | 35.85 | e | |||||||
2014 | 20.45 | i | 30.29 | 34.94 | 38.80 | 48.52 | 54.58 | f | 64.71 | 58.69 | r | 55.27 | 43.32 | 30.13 | 25.90 | 41.32 | c | |||||||||
2015 | 26.00 | a | 30.75 | 35.87 | 39.47 | 48.68 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 36.15 | g | ||||
2016 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 20.61 | 24.46 | 31.50 | 37.89 | 45.68 | 53.41 | 61.42 | 59.45 | 50.29 | 39.08 | 29.76 | 21.89 | 39.21 | |||||||||||||
S.D. | 4.94 | 4.14 | 3.20 | 3.30 | 2.73 | 3.06 | 3.14 | 3.16 | 3.41 | 2.81 | 3.15 | 3.73 | 1.84 | |||||||||||||
SKEW | -0.20 | -0.46 | -0.50 | 0.02 | -0.26 | -0.08 | -0.19 | 0.13 | -0.03 | 0.11 | -0.33 | -0.17 | -0.02 | |||||||||||||
MAX | 30.10 | 32.14 | 36.81 | 43.40 | 50.32 | 60.10 | 68.16 | 68.17 | 57.93 | 44.97 | 35.47 | 29.07 | 42.72 | |||||||||||||
MIN | 9.81 | 14.22 | 23.10 | 31.53 | 39.19 | 46.93 | 51.29 | 53.32 | 42.83 | 32.48 | 22.83 | 12.87 | 35.74 | |||||||||||||
YRS | 48 | 50 | 47 | 47 | 49 | 46 | 49 | 47 | 46 | 46 | 45 | 46 | 36 |