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 | 48.73 | o | 57.06 | 55.55 | 48.13 | 38.28 | f | 22.73 | 10.87 | 38.87 | g | |||||
1964 | 7.58 | 9.97 | 13.61 | 31.13 | 38.83 | b | ----- | z | 58.70 | a | 51.87 | 43.27 | 32.61 | 16.00 | 11.81 | 28.67 | a | |||||||||
1965 | 9.16 | 10.68 | 15.42 | 31.59 | a | 37.87 | 44.40 | 53.04 | g | 48.23 | 39.23 | 35.81 | 29.33 | 14.65 | 28.76 | a | ||||||||||
1966 | 8.14 | b | 11.04 | 22.06 | 28.43 | 38.65 | 35.34 | a | 53.77 | 49.68 | 43.93 | 31.32 | 26.77 | 5.48 | 29.55 | |||||||||||
1967 | ----- | z | 11.32 | 27.19 | 30.13 | 35.55 | 43.57 | 51.61 | 51.97 | 44.38 | a | 33.19 | 23.13 | 4.52 | 32.42 | a | ||||||||||
1968 | 2.90 | 15.72 | 25.48 | 27.20 | 38.58 | 49.37 | ----- | z | 49.87 | 41.83 | 34.52 | 22.00 | 8.00 | 28.68 | a | |||||||||||
1969 | 16.58 | 13.25 | 15.43 | a | 34.07 | a | 45.26 | 46.97 | 57.23 | 57.68 | 48.23 | 30.06 | 22.73 | 16.68 | 33.68 | |||||||||||
1970 | 12.35 | 23.25 | 23.23 | 24.00 | 40.13 | 50.63 | 56.42 | 58.67 | a | 42.00 | a | 30.48 | 27.07 | 14.90 | 33.59 | |||||||||||
1971 | 15.23 | 17.82 | 23.53 | a | 30.41 | a | 39.03 | 50.03 | 57.32 | 58.87 | 41.53 | 33.71 | 18.77 | 10.42 | 33.06 | |||||||||||
1972 | 14.10 | 18.66 | 28.48 | 32.87 | 41.32 | 52.10 | 57.77 | 55.48 | 45.93 | 37.87 | 23.07 | 4.42 | 34.34 | |||||||||||||
1973 | -2.29 | 3.32 | 21.10 | 29.63 | 39.87 | 48.13 | 54.84 | 55.84 | 44.30 | 36.29 | 21.67 | 11.55 | 30.35 | |||||||||||||
1974 | 1.39 | 7.21 | 26.19 | 30.47 | 40.71 | 51.87 | 57.26 | 52.71 | 44.40 | 37.55 | 25.60 | 12.03 | 32.28 | |||||||||||||
1975 | 10.23 | 14.21 | 25.10 | 26.86 | a | 36.47 | a | 46.10 | 58.26 | 53.29 | 44.50 | 31.84 | 19.90 | 12.03 | 31.57 | |||||||||||
1976 | 6.45 | 17.03 | 18.10 | 30.93 | 40.16 | 45.69 | a | 58.87 | 54.23 | 45.63 | 29.90 | 20.53 | 11.58 | 31.59 | ||||||||||||
1977 | 10.81 | 17.14 | 18.81 | 33.27 | 38.87 | 52.67 | 56.55 | 54.32 | 47.33 | 35.90 | 23.63 | 18.73 | e | 34.00 | ||||||||||||
1978 | 13.39 | 14.22 | a | 27.32 | 33.33 | 37.29 | 47.80 | 54.87 | 51.48 | 43.17 | 32.84 | 17.93 | -1.90 | 30.98 | ||||||||||||
1979 | -4.45 | 6.57 | 20.68 | 29.23 | 40.13 | 47.03 | 56.23 | a | 52.65 | 45.27 | 32.10 | 16.63 | 12.29 | 29.53 | ||||||||||||
1980 | 13.06 | 15.59 | 23.26 | 30.40 | 39.06 | 46.10 | 54.29 | 48.58 | 43.57 | 31.90 | 22.37 | 20.68 | 32.40 | |||||||||||||
1981 | 16.26 | 16.57 | 24.48 | 31.90 | 38.94 | 52.10 | 57.10 | 54.52 | 46.37 | 35.65 | 26.40 | 19.00 | 34.94 | |||||||||||||
1982 | 10.00 | 13.71 | 26.32 | 28.10 | 39.13 | 46.57 | 56.97 | 58.55 | 47.97 | 31.06 | 21.93 | 14.26 | 32.88 | |||||||||||||
1983 | 13.87 | 15.11 | 26.19 | 27.87 | 36.23 | 47.40 | 54.94 | 59.35 | 48.57 | 35.42 | 22.87 | 10.19 | 33.17 | |||||||||||||
1984 | -1.71 | 3.28 | 20.58 | 29.47 | 41.87 | 46.53 | 54.35 | 51.63 | a | 43.10 | a | 32.61 | 22.43 | 10.94 | 29.59 | |||||||||||
1985 | 2.35 | 2.11 | 21.06 | 33.97 | 41.39 | 48.90 | 57.71 | 53.13 | 41.73 | 36.35 | 21.47 | 9.50 | a | 30.81 | ||||||||||||
1986 | 11.16 | 21.82 | 30.48 | 32.80 | 38.94 | 51.63 | 53.10 | 54.00 | 44.27 | 33.29 | ----- | z | 15.10 | 35.14 | a | |||||||||||
1987 | 10.16 | 20.57 | 21.26 | 32.87 | 41.19 | 49.20 | 52.52 | 50.19 | 41.87 | 34.55 | 22.07 | 10.26 | 32.23 | |||||||||||||
1988 | 0.35 | 9.21 | 17.61 | 28.20 | 35.52 | 49.87 | 52.00 | 50.68 | 40.37 | 39.61 | 25.03 | 12.03 | 30.04 | |||||||||||||
1989 | 5.16 | 6.25 | 27.42 | 36.27 | 42.03 | 50.03 | 59.26 | 54.32 | 46.30 | 36.16 | 25.14 | a | 14.35 | 33.56 | ||||||||||||
1990 | 15.90 | 14.25 | 29.35 | 37.27 | 41.13 | 52.47 | 58.42 | 55.58 | 51.83 | 35.55 | 24.87 | 3.71 | 35.03 | |||||||||||||
1991 | 3.61 | 16.43 | 26.81 | 31.10 | 42.26 | 50.33 | 56.55 | 55.90 | 45.10 | 35.32 | 23.55 | a | 13.39 | 33.36 | ||||||||||||
1992 | 7.45 | 20.54 | a | 30.55 | 37.77 | 46.74 | 50.93 | 54.77 | 56.19 | 47.53 | 39.52 | 21.87 | 10.68 | 35.38 | ||||||||||||
1993 | 8.77 | 9.93 | a | 25.29 | 32.60 | 43.32 | 47.83 | 53.16 | 53.48 | 43.73 | 35.65 | 18.57 | 14.65 | 32.25 | ||||||||||||
1994 | 16.74 | 16.14 | 26.52 | 33.47 | 43.42 | 52.53 | 55.52 | 53.61 | 47.30 | 36.19 | 18.62 | a | 18.30 | a | 34.86 | |||||||||||
1995 | 16.77 | 22.61 | 25.81 | 29.10 | 31.81 | 46.17 | 53.10 | 57.52 | 47.25 | b | 33.10 | a | 27.50 | 19.39 | 34.18 | |||||||||||
1996 | 13.61 | 18.66 | 26.23 | a | 33.00 | b | 43.10 | 52.03 | a | 58.90 | 56.48 | 45.23 | 34.19 | 25.38 | a | 17.47 | a | 35.36 | ||||||||
1997 | 12.58 | 14.07 | 25.53 | a | 28.70 | 41.97 | a | 50.62 | a | 55.35 | 55.45 | 48.59 | a | 33.52 | 23.27 | 11.94 | 33.47 | |||||||||
1998 | 19.45 | 22.89 | 24.58 | 32.23 | 41.87 | 45.70 | 59.61 | 56.77 | 52.00 | 36.71 | 27.33 | 10.94 | 35.84 | |||||||||||||
1999 | 20.68 | 21.36 | 28.79 | c | 32.10 | a | 38.13 | 48.60 | 57.97 | 55.71 | 44.20 | 33.83 | a | 26.20 | 15.68 | 35.27 | ||||||||||
2000 | 20.19 | 24.86 | a | 28.35 | 36.76 | a | 44.72 | b | 50.90 | a | 58.16 | 59.52 | 46.04 | b | 37.14 | c | 15.86 | a | 14.87 | 36.45 | ||||||
2001 | 12.90 | 19.96 | 29.68 | 35.60 | 43.25 | g | 50.60 | 58.61 | 57.03 | 48.17 | 37.32 | 26.37 | c | 11.48 | 35.25 | a | ||||||||||
2002 | 11.61 | 12.31 | b | 23.61 | c | 36.37 | 43.16 | 55.80 | 63.00 | 57.79 | b | 48.46 | d | 34.19 | 22.63 | 12.61 | 35.13 | |||||||||
2003 | 15.84 | 18.71 | 27.67 | g | 32.12 | f | 42.65 | 49.66 | a | 62.06 | 59.29 | 46.93 | b | 39.84 | 23.60 | 16.10 | a | 37.47 | b | |||||||
2004 | 11.32 | 14.79 | 31.29 | 36.30 | 44.94 | 52.00 | a | 58.61 | 54.42 | 48.53 | 38.77 | 26.37 | 18.68 | 36.34 | ||||||||||||
2005 | 23.03 | 22.36 | 29.90 | 33.14 | a | 41.37 | a | 47.86 | a | 59.16 | 56.06 | 47.87 | 38.60 | a | 27.07 | 15.77 | 36.85 | |||||||||
2006 | 18.26 | 16.26 | a | 25.23 | a | 32.32 | k | 44.42 | 55.73 | 62.45 | 54.90 | b | 43.93 | 35.77 | 26.00 | 13.13 | 36.01 | a | ||||||||
2007 | 3.55 | 20.43 | 29.00 | a | 34.73 | 43.35 | 54.77 | ----- | z | ----- | z | ----- | z | 35.96 | g | 26.40 | 10.26 | l | 30.32 | e | ||||||
2008 | 3.82 | i | 13.43 | h | 23.10 | 30.41 | a | 39.13 | a | 44.22 | l | 59.50 | k | 54.53 | n | 46.63 | 37.07 | a | 28.80 | 13.90 | 31.29 | e | ||||
2009 | 14.67 | a | 21.79 | 25.97 | b | 32.17 | 45.16 | 48.32 | b | 56.06 | 53.35 | 48.77 | 30.61 | 23.07 | a | 3.23 | 33.60 | |||||||||
2010 | 8.52 | 8.43 | 24.29 | 32.28 | a | 37.58 | 51.77 | 58.32 | 55.23 | 47.33 | 37.94 | 23.10 | 21.10 | 33.82 | ||||||||||||
2011 | 4.23 | 8.54 | 26.90 | 30.93 | 36.83 | a | 48.40 | 57.19 | 57.32 | 48.77 | 35.06 | 23.70 | 10.05 | j | 34.35 | a | ||||||||||
2012 | 16.52 | f | 17.22 | t | 29.63 | a | 36.13 | 44.00 | 53.87 | 59.42 | 58.00 | 48.00 | 35.77 | 27.57 | 11.87 | 40.43 | b | |||||||||
2013 | -1.71 | 9.29 | 26.16 | 29.57 | 42.42 | 53.57 | 60.19 | 57.03 | 51.81 | d | ----- | z | 26.70 | 8.11 | c | 33.01 | a | |||||||||
2014 | 15.65 | 23.82 | 29.42 | 34.97 | 45.61 | 52.73 | 62.61 | 56.19 | 51.27 | 40.87 | 25.03 | 21.39 | 38.30 | |||||||||||||
2015 | 20.42 | 26.89 | 33.13 | 35.93 | 43.03 | 57.80 | 58.42 | 59.11 | l | ----- | z | ----- | z | ----- | z | ----- | z | 39.38 | e | |||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 10.54 | 15.22 | 25.01 | 31.96 | 40.69 | 49.62 | 57.07 | 54.80 | 45.93 | 35.00 | 23.46 | 12.65 | 33.41 | |||||||||||||
S.D. | 6.67 | 6.03 | 4.29 | 3.05 | 3.07 | 3.70 | 2.70 | 2.88 | 2.96 | 2.73 | 3.25 | 4.86 | 2.16 | |||||||||||||
SKEW | -0.39 | -0.26 | -0.70 | -0.11 | -0.34 | -0.88 | 0.07 | -0.40 | 0.02 | 0.03 | -0.53 | -0.55 | -0.07 | |||||||||||||
MAX | 23.03 | 26.89 | 33.13 | 37.77 | 46.74 | 57.80 | 63.00 | 59.52 | 52.00 | 40.87 | 29.33 | 21.39 | 38.30 | |||||||||||||
MIN | -4.45 | 2.11 | 13.61 | 24.00 | 31.81 | 35.34 | 51.61 | 48.23 | 39.23 | 29.90 | 15.86 | -1.90 | 29.53 | |||||||||||||
YRS | 49 | 50 | 51 | 50 | 51 | 50 | 49 | 50 | 51 | 49 | 51 | 50 | 38 |