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 | 64.18 | p | 74.06 | 70.24 | 63.15 | 55.02 | f | 36.60 | 23.21 | 53.45 | g | |||||
1964 | 20.47 | 22.47 | 27.85 | 44.18 | 54.03 | b | ----- | z | 75.08 | a | 69.02 | 60.47 | 50.37 | 27.77 | 21.24 | 43.00 | a | |||||||||
1965 | 20.23 | 22.59 | 26.92 | 43.59 | a | 52.57 | a | 59.95 | 69.04 | h | 65.50 | 53.66 | a | 51.74 | 40.23 | 24.35 | 41.94 | a | ||||||||
1966 | 19.71 | c | 23.29 | 36.50 | 45.42 | 56.32 | a | 58.00 | a | 71.47 | a | 67.76 | 60.80 | 47.35 | 38.38 | 15.52 | 45.04 | |||||||||
1967 | ----- | z | 24.55 | 39.52 | 44.40 | a | 50.83 | a | 58.70 | 69.05 | 69.42 | a | 60.78 | a | 48.42 | 36.98 | 14.62 | a | 47.02 | a | ||||||
1968 | 14.61 | 26.36 | 38.27 | a | 39.88 | a | 52.40 | 65.70 | ----- | z | 63.92 | a | 57.71 | a | 49.13 | a | 33.13 | 20.42 | 41.96 | a | ||||||
1969 | 26.45 | 24.34 | 27.78 | b | 47.64 | a | 61.06 | 61.15 | 72.84 | 73.53 | a | 63.43 | 41.16 | 34.42 | 28.03 | 46.82 | ||||||||||
1970 | 23.39 | 34.68 | 34.31 | 39.08 | 56.21 | 65.30 | 72.16 | 74.03 | a | 58.84 | b | 43.65 | 36.95 | a | 25.63 | 47.02 | ||||||||||
1971 | 25.24 | 28.46 | 36.17 | a | 45.41 | a | 53.42 | 66.65 | 74.00 | c | 74.20 | a | 57.62 | 46.50 | 28.48 | 19.89 | 46.34 | |||||||||
1972 | 25.71 | 31.79 | 43.87 | 47.32 | 56.55 | a | 67.37 | 73.84 | 71.15 | 60.70 | 49.08 | 31.67 | 14.81 | 47.82 | ||||||||||||
1973 | 8.47 | 15.09 | 31.31 | 41.68 | 55.35 | 64.05 | 70.85 | 71.90 | a | 59.95 | 51.19 | 32.17 | 22.76 | 43.73 | ||||||||||||
1974 | 12.81 | 19.82 | 40.08 | 44.18 | 58.42 | 68.75 | 73.31 | 69.71 | 61.95 | 50.94 | 36.52 | a | 22.47 | 46.58 | ||||||||||||
1975 | 22.34 | 25.73 | 35.98 | 40.45 | a | 51.52 | a | 61.48 | 73.84 | 69.73 | 61.27 | 48.45 | 32.43 | 24.48 | 45.64 | |||||||||||
1976 | 19.76 | 29.91 | 32.02 | 45.70 | 56.40 | 64.09 | a | 75.92 | 70.66 | 62.20 | 46.70 | a | 36.03 | 26.06 | 47.12 | |||||||||||
1977 | 23.87 | 31.98 | a | 33.90 | 49.65 | 55.45 | 72.27 | 73.85 | 71.16 | 63.57 | 51.65 | 35.97 | 31.06 | f | 51.21 | a | ||||||||||
1978 | 24.34 | 26.70 | a | 39.71 | 48.12 | 53.44 | 66.73 | 74.44 | 70.82 | a | 61.10 | 51.23 | 29.75 | 11.77 | 46.51 | |||||||||||
1979 | 9.00 | 20.93 | 33.08 | 45.45 | 55.15 | 66.35 | 74.08 | a | 70.58 | 65.57 | 50.37 | 28.88 | 24.40 | 45.32 | ||||||||||||
1980 | 22.40 | 27.91 | 35.48 | 45.73 | 53.39 | 66.87 | 74.02 | 69.34 | 61.25 | 47.84 | 36.25 | 33.75 | a | 47.85 | ||||||||||||
1981 | 31.05 | 32.30 | 38.05 | 50.34 | a | 54.45 | 70.26 | a | 74.95 | 72.11 | 64.02 | a | 47.73 | 38.30 | 30.18 | 50.31 | ||||||||||
1982 | 22.24 | 26.84 | 38.26 | 43.71 | a | 54.24 | 65.09 | a | 74.10 | 74.52 | 62.22 | 44.63 | a | 32.40 | a | 24.40 | b | 46.89 | ||||||||
1983 | 24.83 | a | 28.16 | 37.45 | 40.45 | 51.05 | 63.72 | 72.07 | a | 75.13 | 65.22 | a | 50.88 | a | 33.48 | d | 19.34 | b | 46.82 | |||||||
1984 | 8.93 | a | 17.21 | 32.23 | a | 43.67 | a | 58.74 | 63.67 | 72.62 | a | 69.60 | b | 61.24 | a | 44.87 | a | 34.74 | c | 22.10 | 44.14 | |||||
1985 | 14.43 | a | 15.96 | 34.09 | b | 49.63 | 58.11 | 67.74 | a | 73.98 | 72.05 | 58.03 | a | 49.62 | b | 32.91 | a | 21.63 | a | 45.68 | ||||||
1986 | 23.81 | 33.81 | b | 44.12 | a | 46.59 | a | 54.45 | 70.07 | 70.85 | a | 71.77 | 58.27 | d | 47.19 | ----- | z | 27.30 | a | 49.84 | a | |||||
1987 | 22.65 | a | 31.32 | 34.82 | a | 49.82 | 57.22 | b | 68.67 | 70.92 | 68.73 | 61.53 | 51.79 | 33.88 | 21.62 | a | 47.75 | |||||||||
1988 | 14.47 | 24.96 | a | 33.32 | 46.45 | b | 55.85 | a | 70.05 | 73.73 | c | 70.61 | 59.13 | 55.47 | 35.68 | 22.50 | 46.85 | |||||||||
1989 | 17.55 | 17.62 | 41.21 | 51.68 | 58.90 | 66.65 | 76.52 | a | 69.89 | 62.68 | 50.34 | 38.19 | c | 25.69 | 48.08 | |||||||||||
1990 | 27.83 | a | 25.46 | 41.24 | 51.93 | 56.76 | 69.72 | a | 74.48 | 72.03 | 66.12 | a | 49.40 | 35.77 | 15.11 | 48.82 | ||||||||||
1991 | 14.03 | a | 28.41 | 37.29 | 44.18 | 57.58 | a | 67.72 | a | 73.50 | 72.34 | 61.73 | 49.94 | 33.09 | b | 21.53 | a | 46.78 | ||||||||
1992 | 17.95 | 31.09 | a | 42.16 | c | 53.76 | a | 61.60 | 67.13 | 70.67 | a | 72.50 | 63.38 | 53.60 | 31.02 | 21.08 | 48.83 | |||||||||
1993 | 18.23 | a | 20.23 | b | 36.50 | 45.41 | b | 57.79 | 64.29 | a | 70.74 | b | 69.45 | a | 61.73 | d | 47.76 | 29.60 | 24.27 | a | 45.50 | |||||
1994 | 28.24 | 27.86 | 41.34 | 48.45 | 60.89 | 71.95 | a | 74.84 | b | 72.57 | b | 63.90 | 47.66 | 29.91 | b | 26.29 | b | 49.49 | ||||||||
1995 | 25.05 | 35.00 | 39.48 | a | 43.83 | 47.81 | 61.97 | a | 70.67 | a | 73.78 | a | 62.86 | b | 48.03 | a | 40.10 | 29.67 | b | 48.19 | ||||||
1996 | 24.62 | a | 30.00 | 39.25 | a | 47.33 | c | 59.05 | a | 69.00 | b | 75.55 | a | 73.69 | 59.88 | 47.07 | a | 35.78 | a | 26.97 | a | 49.02 | ||||
1997 | 21.77 | a | 23.93 | 39.32 | a | 40.84 | b | 56.53 | a | 66.69 | a | 71.72 | a | 70.29 | 61.36 | a | 47.97 | 33.78 | 20.92 | 46.26 | ||||||
1998 | 29.27 | 31.32 | 37.26 | 44.59 | b | 56.13 | a | 60.95 | a | 74.37 | 72.20 | a | 66.31 | a | 49.09 | b | 37.37 | 22.57 | a | 48.45 | ||||||
1999 | 30.19 | 32.39 | a | 43.46 | c | 43.29 | b | 52.00 | b | 64.57 | a | 73.18 | 69.56 | 60.52 | e | 51.50 | d | 40.96 | e | 26.78 | b | 49.03 | ||||
2000 | 29.27 | e | 33.52 | e | 39.79 | c | 51.75 | b | 61.06 | d | 68.74 | c | 75.27 | 74.71 | c | 62.23 | h | 49.52 | f | 26.56 | c | 26.50 | b | 48.72 | b | |
2001 | 24.58 | e | 30.78 | c | 41.19 | b | 48.45 | 59.41 | i | 68.38 | 74.80 | a | 72.68 | c | 65.21 | b | 52.29 | b | 38.24 | g | 21.70 | d | 50.01 | b | ||
2002 | 21.81 | d | 25.75 | h | 36.39 | d | 51.35 | g | 59.02 | b | 73.00 | e | 79.39 | d | 73.02 | h | 60.43 | g | 47.74 | d | 32.48 | b | 22.22 | f | 49.98 | e |
2003 | 24.27 | a | 28.24 | e | 39.69 | j | 46.35 | f | 57.71 | 65.45 | a | 79.13 | e | 74.55 | c | 62.92 | d | 56.48 | b | 33.02 | a | 26.37 | e | 50.81 | b | |
2004 | 21.07 | c | 26.11 | a | 45.87 | d | 50.30 | g | 60.30 | c | 68.08 | f | 74.05 | c | 70.04 | g | 62.26 | g | 49.15 | h | 34.98 | f | 28.88 | g | 45.48 | g |
2005 | 30.74 | 32.22 | a | 38.62 | b | 46.50 | a | 57.02 | d | 63.72 | c | 76.33 | a | 71.64 | b | 62.57 | 51.82 | a | 37.42 | 25.73 | 49.53 | |||||
2006 | 28.02 | e | 29.41 | a | 36.59 | b | 48.16 | k | 60.50 | 72.12 | 77.73 | 70.15 | e | 59.28 | c | 47.29 | 37.00 | a | 22.39 | c | 49.13 | a | ||||
2007 | 15.66 | b | 32.00 | 43.13 | a | 49.07 | 58.92 | 71.75 | ----- | z | ----- | z | ----- | z | 49.58 | k | 40.88 | d | 18.78 | o | 44.49 | e | ||||
2008 | 14.91 | i | 24.73 | i | 35.13 | 44.40 | a | 53.48 | a | 61.31 | n | 76.30 | k | 70.41 | n | 62.41 | b | 52.12 | b | 41.12 | 23.48 | a | 44.59 | e | ||
2009 | 25.91 | b | 32.36 | 40.50 | b | 46.05 | b | 59.18 | a | 62.12 | e | 72.97 | b | 69.17 | a | 63.86 | a | 43.50 | a | 35.90 | a | 13.23 | 47.06 | |||
2010 | 18.10 | 19.68 | 36.58 | 46.14 | a | 51.94 | 67.22 | 74.44 | 70.55 | 64.55 | 51.66 | 33.40 | 28.76 | 46.92 | ||||||||||||
2011 | 14.23 | 19.82 | 37.66 | 43.93 | 50.43 | a | 64.93 | 72.19 | 73.47 | 64.10 | 48.31 | 35.28 | 18.90 | j | 47.67 | a | ||||||||||
2012 | 27.58 | f | 28.33 | t | 43.67 | a | 51.33 | 60.05 | 71.77 | 74.58 | 73.89 | 63.28 | 48.79 | 39.38 | a | 21.10 | 54.78 | b | ||||||||
2013 | 8.08 | 19.77 | 37.24 | 41.97 | 56.24 | 70.13 | 75.42 | 71.34 | 63.31 | d | ----- | z | 34.13 | 15.36 | c | 44.82 | a | |||||||||
2014 | 24.58 | 32.84 | 41.13 | 46.85 | 58.98 | 68.42 | 77.02 | 68.40 | 63.88 | 52.71 | 34.77 | 28.19 | 49.81 | |||||||||||||
2015 | 28.24 | 37.14 | 45.32 | 48.72 | 54.06 | 71.78 | 72.19 | 72.47 | l | ----- | z | ----- | z | ----- | z | ----- | z | 51.07 | e | |||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 21.44 | 27.03 | 37.69 | 46.02 | 56.09 | 66.59 | 73.83 | 71.17 | 61.87 | 49.21 | 34.71 | 22.90 | 47.24 | |||||||||||||
S.D. | 6.12 | 5.51 | 4.35 | 3.42 | 3.21 | 3.73 | 2.15 | 2.33 | 2.49 | 2.99 | 3.56 | 4.69 | 1.60 | |||||||||||||
SKEW | -0.56 | -0.40 | -0.43 | 0.11 | -0.31 | -0.31 | 0.32 | -0.62 | -0.72 | -0.18 | -0.20 | -0.40 | -0.10 | |||||||||||||
MAX | 31.05 | 37.14 | 45.87 | 53.76 | 61.60 | 73.00 | 79.39 | 75.13 | 66.31 | 56.48 | 41.12 | 33.75 | 50.31 | |||||||||||||
MIN | 8.08 | 15.09 | 26.92 | 39.08 | 47.81 | 58.00 | 69.05 | 63.92 | 53.66 | 41.16 | 26.56 | 11.77 | 43.73 | |||||||||||||
YRS | 49 | 49 | 51 | 48 | 51 | 49 | 49 | 48 | 48 | 47 | 49 | 47 | 34 |