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 | 77.34 | b | 78.48 | 67.37 | 59.58 | 40.93 | 26.42 | 58.35 | f | |||||
1963 | 11.81 | 22.36 | 41.97 | 59.40 | 65.32 | 79.57 | 83.13 | 77.81 | 71.77 | 69.65 | 46.83 | 19.71 | 54.11 | |||||||||||||
1964 | 29.52 | 32.55 | 37.06 | 56.90 | 73.00 | 77.43 | 86.03 | a | 77.71 | 66.57 | 56.55 | 44.80 | 23.84 | 55.16 | ||||||||||||
1965 | 20.27 | a | 24.15 | a | 30.77 | 49.00 | 71.13 | 74.93 | a | 77.77 | 76.65 | 62.93 | 59.81 | 39.87 | 32.29 | 51.63 | ||||||||||
1966 | 16.77 | a | 29.11 | 42.81 | 50.43 | 63.87 | 77.97 | 84.71 | 75.16 | 69.07 | 57.03 | 37.66 | a | 25.97 | 52.55 | |||||||||||
1967 | 25.32 | 22.14 | 39.06 | 53.60 | 63.23 | 75.33 | 77.90 | 75.87 | 70.97 | 56.03 | 36.30 | 29.97 | a | 52.14 | ||||||||||||
1968 | 22.90 | 25.82 | a | 49.35 | 59.20 | 63.87 | 76.88 | m | ----- | z | ----- | z | 66.00 | y | 58.65 | 39.90 | 27.26 | 43.37 | d | |||||||
1969 | 20.84 | 29.14 | 34.71 | 57.57 | b | 68.55 | b | 66.83 | a | 78.70 | a | 81.80 | a | 70.83 | 52.97 | 40.37 | 27.52 | 52.49 | ||||||||
1970 | 16.39 | 27.54 | 35.74 | 55.53 | 68.79 | b | 78.17 | 82.50 | a | 79.52 | 68.37 | 58.29 | 37.83 | 26.97 | 52.97 | |||||||||||
1971 | 16.32 | 26.00 | a | 34.94 | 55.43 | 65.90 | a | 79.77 | 77.10 | 76.48 | 70.80 | 62.39 | 39.77 | 27.19 | 52.67 | |||||||||||
1972 | 17.97 | 22.41 | 34.68 | 50.30 | 73.13 | a | 76.30 | 77.87 | 77.13 | 67.41 | a | 53.55 | 36.57 | 21.65 | 50.75 | |||||||||||
1973 | 26.06 | 28.75 | 47.16 | 52.33 | 62.87 | 76.50 | 80.61 | 80.81 | 68.17 | 64.10 | 40.00 | 25.23 | 54.38 | |||||||||||||
1974 | 21.58 | 28.39 | 37.94 | 56.63 | 64.39 | 73.30 | 83.45 | 77.58 | 65.60 | 58.74 | 41.77 | 31.29 | 53.39 | |||||||||||||
1975 | 24.19 | 27.79 | 34.00 | 48.27 | 72.55 | 74.77 | 81.55 | 78.65 | 65.37 | 63.00 | 46.37 | 25.16 | 53.47 | |||||||||||||
1976 | 21.42 | 34.10 | 38.00 | 59.31 | a | 67.93 | a | 80.20 | 84.42 | 82.19 | 72.60 | 54.00 | 34.27 | 18.35 | 53.90 | |||||||||||
1977 | 11.55 | 29.71 | 45.71 | 64.00 | 78.16 | 74.53 | 81.94 | 74.52 | 67.70 | 58.10 | 39.77 | 23.61 | 54.11 | |||||||||||||
1978 | 18.45 | 22.61 | 39.48 | 54.40 | 71.42 | 75.68 | b | 76.77 | 78.48 | 74.23 | 55.55 | 39.07 | 22.48 | 52.39 | ||||||||||||
1979 | 12.48 | 20.96 | 37.84 | 50.53 | 63.58 | 74.33 | 79.48 | 74.81 | 70.67 | 52.16 | 36.93 | 31.10 | 50.41 | |||||||||||||
1980 | 20.16 | 23.66 | 34.52 | 57.13 | 71.90 | 74.83 | a | 81.10 | 75.90 | 66.83 | 50.55 | 40.00 | 24.90 | a | 51.79 | |||||||||||
1981 | 24.77 | 29.29 | 42.23 | 56.30 | 66.48 | 74.13 | 78.81 | 76.65 | 66.07 | 52.77 | 44.90 | 24.26 | 53.05 | |||||||||||||
1982 | 13.47 | a | 24.22 | a | 34.13 | 49.13 | 71.39 | 70.28 | a | 80.23 | a | 76.07 | c | 66.13 | 58.72 | b | 37.13 | 29.77 | 50.89 | |||||||
1983 | 25.77 | 31.54 | 39.41 | b | 49.33 | 61.39 | 75.87 | 82.94 | 80.95 | i | 69.60 | 56.43 | a | 39.10 | a | 14.47 | a | 49.62 | a | |||||||
1984 | 20.57 | a | 35.41 | 33.97 | 56.62 | a | 64.55 | 75.77 | 78.61 | 80.60 | a | 67.21 | a | 58.60 | a | 39.93 | 26.61 | 53.20 | ||||||||
1985 | 18.58 | 24.04 | 43.40 | a | 59.90 | a | 71.72 | b | 73.17 | 78.81 | 73.93 | a | 66.40 | 57.28 | b | 31.07 | b | 14.61 | 51.08 | |||||||
1986 | 24.13 | a | 23.11 | 40.80 | a | 59.38 | a | 70.77 | 75.86 | a | 80.89 | c | 74.30 | a | 66.80 | 54.83 | b | 34.97 | a | 28.00 | 52.82 | |||||
1987 | 27.26 | 36.82 | 46.39 | 63.69 | d | 73.23 | 79.34 | a | 82.32 | 75.13 | 70.50 | b | 49.96 | c | 42.73 | 30.55 | 56.49 | |||||||||
1988 | 18.84 | 21.97 | 38.68 | 57.43 | b | 75.60 | a | 81.14 | a | 85.68 | 81.63 | a | 69.25 | b | 51.32 | 39.73 | 25.87 | a | 53.93 | |||||||
1989 | 30.00 | a | 19.61 | 33.50 | a | 51.45 | a | 67.55 | b | 74.46 | b | 81.39 | 77.68 | 69.37 | 60.52 | b | 35.07 | 16.32 | 51.41 | |||||||
1990 | 32.42 | 30.41 | a | 43.48 | 56.83 | 64.84 | 75.54 | b | ----- | z | ----- | z | 69.10 | 56.39 | 45.90 | 24.65 | 49.96 | b | ||||||||
1991 | 18.71 | 31.82 | 42.45 | 59.27 | 69.26 | 79.50 | 77.03 | 78.63 | a | 65.62 | a | 54.61 | 32.40 | 28.52 | b | 53.15 | ||||||||||
1992 | 26.13 | 31.76 | 38.47 | a | 49.27 | 69.71 | 72.66 | a | 73.19 | 73.77 | 67.03 | 54.50 | a | 34.83 | 26.87 | 51.52 | ||||||||||
1993 | 22.97 | 25.71 | 40.00 | 51.10 | 65.58 | 70.53 | 77.03 | 77.90 | 61.77 | 54.10 | a | 35.17 | 26.71 | 50.71 | ||||||||||||
1994 | 12.47 | a | 22.07 | a | 41.03 | a | 54.87 | 69.71 | 78.10 | a | 75.68 | 74.32 | 70.43 | 57.94 | 43.54 | b | 31.77 | 52.66 | ||||||||
1995 | 23.00 | 24.57 | 41.55 | 47.13 | 65.45 | 79.87 | 78.73 | a | 79.61 | 67.03 | 54.55 | 29.30 | c | 22.52 | 51.11 | |||||||||||
1996 | 19.35 | 24.10 | 31.23 | a | 49.37 | 64.45 | b | 74.24 | a | 74.07 | c | 78.66 | b | 67.63 | 62.88 | o | 29.40 | e | 22.06 | 48.60 | a | |||||
1997 | 17.93 | a | 28.36 | 36.00 | 52.93 | 61.29 | 76.43 | 76.74 | 73.13 | 68.00 | 56.23 | a | 34.70 | 30.84 | 51.05 | |||||||||||
1998 | 25.06 | 38.26 | a | 37.87 | a | 60.87 | 74.73 | a | 71.90 | a | 78.80 | a | 79.00 | a | 75.17 | a | 58.03 | a | 42.30 | 32.42 | 56.20 | |||||
1999 | 18.67 | a | 34.25 | 42.41 | d | 57.63 | 69.58 | 77.40 | j | 82.80 | u | 75.03 | a | 66.59 | a | 56.11 | c | 47.57 | 29.80 | a | 49.76 | b | ||||
2000 | 22.00 | a | 33.86 | 48.03 | 53.97 | 67.84 | 72.29 | b | 76.40 | a | 76.78 | d | 66.93 | 60.00 | a | 36.50 | 15.40 | a | 52.50 | |||||||
2001 | 26.65 | 21.92 | c | 36.55 | 56.00 | 65.93 | b | 74.36 | b | 79.80 | a | 78.23 | e | 66.60 | 55.23 | 50.57 | 31.87 | a | 53.64 | |||||||
2002 | 31.32 | c | 34.78 | a | 31.32 | 50.87 | 60.87 | 75.23 | 81.52 | 76.00 | 69.47 | 47.23 | 37.21 | a | 30.23 | 52.17 | ||||||||||
2003 | 20.30 | a | 22.07 | 38.07 | c | ----- | z | ----- | z | 73.77 | 77.55 | 80.70 | a | 68.80 | 57.50 | a | 37.67 | 31.50 | a | 50.79 | b | |||||
2004 | 17.06 | 29.62 | 39.57 | a | 56.62 | a | 63.32 | 71.63 | 77.29 | 71.37 | a | 74.97 | 56.39 | c | 42.04 | b | 27.31 | b | 52.27 | |||||||
2005 | 20.68 | 31.46 | 36.77 | a | 59.47 | 62.35 | 79.04 | d | 82.59 | b | 78.07 | a | 74.80 | 59.33 | a | 41.33 | 23.58 | 54.12 | ||||||||
2006 | 31.77 | 25.96 | 40.35 | 62.18 | b | 67.70 | a | 76.67 | 85.68 | 76.80 | a | 65.37 | 51.26 | 43.21 | a | 32.73 | a | 54.97 | ||||||||
2007 | 25.00 | 18.89 | 43.43 | a | 53.87 | 70.19 | 78.38 | a | 80.06 | 76.74 | 69.97 | a | 59.93 | a | 37.90 | 23.00 | a | 53.11 | ||||||||
2008 | 23.31 | b | 23.07 | 34.81 | 52.73 | 63.84 | 72.47 | 78.81 | 77.58 | 69.14 | a | 55.94 | 39.23 | 21.47 | a | 51.03 | ||||||||||
2009 | 15.65 | 28.85 | a | 40.29 | 54.23 | 67.52 | b | 72.17 | 73.03 | 74.10 | a | 72.47 | 47.66 | b | 47.28 | a | 23.40 | a | 51.39 | |||||||
2010 | 22.73 | a | 29.39 | 50.58 | 63.03 | 68.87 | 72.54 | b | 79.97 | a | 81.11 | c | 65.73 | 59.68 | 40.90 | 23.57 | a | 54.84 | ||||||||
2011 | 17.67 | a | 26.79 | 37.42 | 50.79 | a | 65.23 | a | 75.47 | 82.35 | 77.00 | 65.93 | 59.84 | 43.67 | 30.42 | 52.71 | ||||||||||
2012 | 28.06 | 33.11 | a | 54.16 | 57.23 | 70.93 | a | 77.33 | 84.48 | 79.40 | a | 71.00 | 53.74 | 41.50 | 29.19 | 56.68 | ||||||||||
2013 | 22.97 | 24.79 | 32.74 | 45.23 | 66.10 | 72.67 | 78.71 | 78.94 | 71.50 | 54.42 | 36.67 | 19.13 | 50.32 | |||||||||||||
2014 | 13.97 | 16.18 | 31.58 | 48.10 | 66.80 | a | 75.83 | a | 74.90 | 75.90 | 68.07 | 54.53 | a | 30.00 | 26.42 | 48.52 | ||||||||||
2015 | 21.52 | 15.82 | 42.32 | 57.23 | 67.90 | 73.33 | o | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 40.96 | g | |||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 21.41 | 27.00 | 39.26 | 54.89 | 67.74 | 75.38 | 79.73 | 77.29 | 68.61 | 56.47 | 39.33 | 25.79 | 52.74 | |||||||||||||
S.D. | 5.18 | 5.17 | 5.15 | 4.56 | 3.96 | 2.94 | 3.22 | 2.42 | 2.89 | 4.02 | 4.70 | 4.75 | 1.70 | |||||||||||||
SKEW | 0.10 | 0.06 | 0.63 | -0.01 | 0.37 | -0.25 | 0.05 | -0.00 | 0.36 | 0.33 | -0.03 | -0.64 | 0.25 | |||||||||||||
MAX | 32.42 | 38.26 | 54.16 | 64.00 | 78.16 | 81.14 | 86.03 | 82.19 | 75.17 | 69.65 | 50.57 | 32.73 | 56.68 | |||||||||||||
MIN | 11.55 | 15.82 | 30.77 | 45.23 | 60.87 | 66.83 | 73.03 | 71.37 | 61.77 | 47.23 | 29.30 | 14.47 | 48.52 | |||||||||||||
YRS | 53 | 53 | 53 | 52 | 52 | 50 | 50 | 50 | 52 | 52 | 53 | 53 | 46 |