YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 47.61 | 46.77 | 40.00 | a | 30.90 | a | 22.38 | a | 11.83 | a | 33.25 | f | ||
1949 | -6.71 | 14.21 | 25.57 | a | 31.97 | 40.84 | 42.73 | 49.47 | a | 50.26 | h | 41.27 | 26.26 | 29.13 | 18.03 | 28.43 | a | |||||||||
1950 | 15.03 | 22.33 | a | 24.26 | 29.52 | a | 33.79 | b | 41.37 | 50.68 | 46.81 | 42.27 | 36.61 | 29.54 | b | 28.00 | b | 33.35 | ||||||||
1951 | 15.40 | a | 22.68 | 19.26 | 32.00 | 37.84 | 39.67 | 52.74 | 49.43 | a | 38.90 | a | 31.42 | 23.40 | 13.61 | 31.36 | ||||||||||
1952 | 12.55 | 12.03 | 17.88 | e | 32.23 | d | 38.58 | 42.50 | 50.03 | 48.48 | 41.63 | c | 32.19 | 15.73 | 23.48 | 30.61 | ||||||||||
1953 | 30.03 | 21.18 | 25.06 | 28.37 | 31.06 | 39.47 | 50.65 | 47.52 | 41.33 | 31.58 | 31.28 | a | 16.39 | 32.83 | ||||||||||||
1954 | 22.42 | 24.68 | 21.39 | 31.70 | 37.38 | b | 38.63 | 50.84 | 46.29 | 36.96 | b | 30.32 | c | 26.50 | b | 14.29 | 31.78 | |||||||||
1955 | 5.00 | a | 10.78 | a | 19.11 | d | 26.90 | a | 33.74 | 43.03 | 49.68 | 50.84 | 39.50 | 30.77 | a | 23.17 | 23.00 | 29.63 | ||||||||
1956 | 23.81 | 14.31 | 25.13 | 30.67 | 40.55 | 41.83 | a | 51.23 | 47.13 | 39.07 | 30.74 | 19.70 | 18.13 | a | 31.86 | |||||||||||
1957 | 8.80 | a | 24.96 | 27.39 | 30.03 | 39.23 | 45.03 | 49.10 | a | 45.97 | 40.00 | 33.10 | 18.00 | 22.55 | 32.01 | |||||||||||
1958 | 15.58 | 28.04 | a | 23.61 | 30.63 | 44.29 | 46.63 | 49.39 | 53.19 | 40.07 | 32.35 | 25.93 | 26.13 | a | 34.65 | |||||||||||
1959 | 25.57 | a | 21.54 | 25.42 | 32.00 | 32.94 | 47.20 | 53.26 | 48.13 | 40.37 | 33.26 | 19.97 | 13.42 | 32.75 | ||||||||||||
1960 | 11.87 | 17.83 | 27.06 | 31.33 | 37.42 | 46.24 | a | 55.97 | 47.45 | 42.57 | 31.34 | b | 27.17 | 16.16 | 32.70 | |||||||||||
1961 | 18.71 | 26.29 | 27.19 | 28.07 | 38.32 | 49.80 | 52.16 | 55.55 | 37.03 | 32.23 | 23.37 | 18.32 | 33.92 | |||||||||||||
1962 | 9.61 | 22.68 | 20.84 | 32.60 | 37.16 | 44.07 | 47.80 | a | 47.19 | 41.97 | 32.87 | 26.97 | a | 22.06 | 32.15 | |||||||||||
1963 | 10.16 | 29.93 | 25.55 | 30.13 | 40.83 | a | 43.03 | 46.58 | 49.97 | 47.47 | 39.39 | 28.70 | 19.39 | 34.26 | ||||||||||||
1964 | 14.61 | 12.14 | 19.42 | 27.77 | 36.29 | 44.43 | 51.32 | 46.35 | 37.00 | 32.81 | 24.83 | 21.10 | 30.67 | |||||||||||||
1965 | 21.74 | 22.14 | 22.39 | 35.10 | 34.35 | 42.87 | 50.71 | 48.29 | 35.37 | 32.48 | 29.17 | 16.10 | 32.56 | |||||||||||||
1966 | 19.29 | 18.50 | 23.48 | 27.43 | 41.71 | 43.03 | 50.06 | 50.71 | 44.20 | 28.84 | 29.63 | 21.06 | 33.16 | |||||||||||||
1967 | 23.13 | 25.00 | 26.84 | 27.97 | 35.87 | a | 44.63 | 54.90 | 54.45 | 48.10 | 31.55 | 27.27 | 16.59 | d | 34.69 | |||||||||||
1968 | 17.23 | 29.55 | 25.45 | 26.70 | 35.94 | 44.13 | 54.58 | 48.29 | 40.37 | 32.13 | 26.97 | 20.42 | 33.48 | |||||||||||||
1969 | 23.35 | 21.54 | 18.19 | 31.27 | 40.45 | 47.23 | 51.61 | 52.00 | a | 42.60 | 27.13 | 23.13 | 21.61 | 33.34 | ||||||||||||
1970 | 23.19 | 26.96 | ----- | z | 25.03 | 36.97 | a | 46.17 | 52.68 | c | 54.33 | a | 35.08 | e | ----- | z | 30.60 | 18.67 | a | 34.97 | b | |||||
1971 | 22.48 | 20.18 | 22.52 | 31.57 | b | 39.10 | 43.89 | c | 51.58 | g | 53.92 | g | 36.54 | d | 28.62 | g | 26.04 | b | 15.00 | j | 30.29 | d | ||||
1972 | 16.15 | e | 25.48 | f | 31.76 | j | 27.95 | j | 37.55 | k | 48.19 | c | 49.85 | d | 50.69 | e | 34.89 | k | ----- | z | ----- | z | ----- | z | 41.22 | h |
1973 | ----- | z | ----- | z | ----- | z | ----- | z | 39.33 | g | 44.07 | a | 52.21 | g | 51.21 | b | 40.43 | b | 31.86 | c | 29.04 | c | 22.43 | c | 36.50 | f |
1974 | 18.19 | 19.89 | 24.92 | e | 29.03 | 34.20 | p | 47.44 | c | 49.04 | f | 46.28 | f | 40.00 | a | 31.43 | h | 27.28 | e | 21.36 | i | 29.54 | e | |||
1975 | 16.14 | b | 19.07 | a | 25.00 | 27.27 | ----- | z | 43.07 | 56.18 | c | 47.21 | g | 40.93 | c | 34.97 | 25.17 | 26.45 | i | 31.98 | c | |||||
1976 | 17.06 | 22.62 | e | 20.46 | e | 29.60 | j | 41.40 | a | 42.88 | f | 52.76 | j | 46.62 | e | 41.73 | s | 30.50 | a | 24.66 | a | 15.97 | 27.41 | d | ||
1977 | 14.71 | 20.14 | n | 21.45 | 28.74 | g | 34.83 | b | 48.50 | v | 50.89 | c | 52.32 | 40.97 | a | 32.58 | 27.27 | 27.13 | 33.57 | c | ||||||
1978 | 24.06 | 25.62 | d | 30.46 | e | 31.03 | 34.00 | a | 44.37 | 50.48 | 46.58 | 39.96 | c | 31.63 | a | 23.13 | 12.84 | 32.85 | ||||||||
1979 | 9.39 | 25.14 | 24.37 | a | 29.47 | 38.19 | 45.33 | 51.32 | 51.42 | 44.27 | 37.16 | 20.48 | a | 22.63 | a | 33.26 | ||||||||||
1980 | 17.06 | 28.70 | b | 24.00 | 32.30 | 39.16 | 43.23 | 52.32 | 45.39 | c | 40.90 | 29.81 | 24.00 | 20.16 | 33.09 | |||||||||||
1981 | 21.29 | 20.07 | 22.97 | 32.87 | 37.10 | 44.47 | 48.58 | 50.95 | k | 42.38 | a | 29.86 | c | 27.93 | a | 30.41 | i | 32.75 | b | |||||||
1982 | 16.15 | d | 17.30 | a | 27.29 | ----- | z | 34.93 | b | 44.86 | a | 50.23 | 50.10 | 44.27 | d | 31.17 | a | 22.69 | a | 20.27 | a | 32.66 | a | |||
1983 | 24.03 | 25.11 | 30.63 | a | 28.20 | 36.61 | 43.63 | 47.68 | 54.74 | 41.80 | 34.35 | 28.97 | 18.71 | 34.54 | ||||||||||||
1984 | 11.45 | 14.66 | 25.97 | 29.87 | 40.58 | 42.93 | 53.97 | 54.33 | a | 37.17 | l | 29.58 | 26.42 | d | 8.05 | l | 32.98 | b | ||||||||
1985 | 6.61 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 6.61 | k | |
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 | ----- | z | ----- | z |
2005 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2006 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2007 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2008 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2009 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2010 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2011 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2012 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2013 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2014 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2015 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 16.53 | 21.44 | 23.96 | 30.03 | 37.55 | 44.09 | 51.05 | 49.64 | 40.75 | 31.93 | 25.43 | 19.37 | 32.73 | |||||||||||||
S.D. | 7.06 | 5.19 | 3.23 | 2.26 | 2.97 | 2.43 | 2.34 | 3.01 | 2.93 | 2.59 | 3.65 | 4.12 | 1.31 | |||||||||||||
SKEW | -0.89 | -0.38 | -0.07 | -0.13 | -0.00 | -0.01 | 0.40 | 0.46 | 0.32 | 0.62 | -0.68 | 0.13 | -0.51 | |||||||||||||
MAX | 30.03 | 29.93 | 30.63 | 35.10 | 44.29 | 49.80 | 56.18 | 55.55 | 48.10 | 39.39 | 31.28 | 28.00 | 34.69 | |||||||||||||
MIN | -6.71 | 10.78 | 17.88 | 25.03 | 31.06 | 38.63 | 46.58 | 45.39 | 35.08 | 26.26 | 15.73 | 11.83 | 29.63 | |||||||||||||
YRS | 36 | 33 | 33 | 31 | 32 | 34 | 33 | 32 | 34 | 33 | 36 | 31 | 24 |