YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 39.46 | p | 29.42 | a | 29.42 | k |
1961 | 29.09 | b | 38.12 | b | 43.93 | a | 50.10 | 61.82 | 73.85 | 75.78 | a | 77.08 | k | 60.31 | a | 52.86 | f | 39.61 | b | 26.03 | 49.86 | b | ||||
1962 | 26.10 | 38.54 | 39.03 | a | 56.05 | a | 60.90 | a | 69.12 | a | 75.19 | b | 73.47 | 64.78 | 53.58 | 40.73 | 28.42 | 52.16 | ||||||||
1963 | 18.78 | a | 36.75 | 38.77 | 49.00 | 62.32 | 66.98 | a | 77.59 | b | 75.55 | 69.78 | g | 60.80 | a | 42.68 | 26.76 | 50.54 | a | |||||||
1964 | 26.10 | a | 29.91 | 38.58 | 50.55 | 62.76 | 67.95 | a | 77.55 | a | 71.96 | d | 63.92 | 54.78 | a | 35.72 | 33.23 | 51.08 | ||||||||
1965 | 34.27 | a | 34.98 | 42.94 | m | 51.74 | a | 59.02 | a | 67.12 | 75.63 | 73.66 | 60.27 | 55.02 | 44.05 | a | 33.71 | e | 53.59 | a | ||||||
1966 | 27.67 | e | 32.00 | 45.40 | 53.72 | 64.68 | a | 71.83 | 79.56 | 76.16 | c | 67.82 | 54.77 | 44.75 | 32.14 | c | 54.21 | |||||||||
1967 | 27.47 | 37.60 | b | 49.32 | 52.00 | 59.05 | a | 68.31 | a | 78.50 | 76.44 | 68.50 | 57.53 | 43.52 | 25.74 | 53.66 | ||||||||||
1968 | 23.60 | a | 39.45 | 44.79 | g | 49.38 | a | 59.68 | a | 72.32 | 76.00 | 70.92 | a | 65.34 | a | 55.20 | a | 39.90 | a | 26.94 | 52.61 | a | ||||
1969 | 33.11 | 35.02 | 40.56 | 55.27 | 65.60 | a | 68.47 | 78.71 | 79.23 | 68.72 | 50.27 | 39.45 | 32.90 | 53.94 | ||||||||||||
1970 | 31.66 | 41.64 | 41.60 | 47.42 | 63.37 | 70.70 | b | 77.74 | 77.36 | b | 64.59 | a | 50.42 | 41.54 | b | 33.40 | 53.45 | |||||||||
1971 | 30.73 | 36.79 | b | 43.27 | a | 51.12 | b | 60.35 | a | 69.87 | k | 80.79 | s | 76.45 | 64.41 | a | 55.02 | d | 39.45 | b | 28.76 | 48.63 | b | |||
1972 | 32.95 | a | 34.59 | b | 48.15 | a | 50.78 | 60.00 | b | 69.76 | e | 75.66 | 72.71 | 63.95 | 52.37 | a | 38.57 | 28.62 | b | 52.34 | ||||||
1973 | 23.34 | i | 34.82 | 42.40 | 48.70 | 61.00 | 67.86 | b | 75.44 | 74.63 | a | 63.80 | 53.87 | 41.95 | 30.95 | 54.13 | a | |||||||||
1974 | 22.73 | 28.00 | a | 46.67 | b | 50.52 | a | 64.98 | b | 70.78 | j | 76.48 | g | 73.97 | 66.83 | 56.66 | 42.14 | b | 29.37 | a | 48.19 | b | ||||
1975 | 24.65 | 33.37 | a | 41.40 | a | 47.82 | 58.35 | 66.98 | 76.21 | b | 73.62 | a | 66.40 | 53.08 | 39.37 | d | 32.53 | 51.15 | ||||||||
1976 | 24.40 | 39.78 | 42.05 | 53.09 | b | 63.22 | b | 70.45 | a | 79.50 | a | 73.66 | 66.02 | 52.03 | b | 41.48 | 28.29 | 52.83 | ||||||||
1977 | 23.55 | 35.45 | 41.70 | c | 54.92 | 60.37 | a | 74.88 | a | 77.87 | ----- | z | ----- | z | 56.89 | 43.57 | 37.11 | 50.63 | b | |||||||
1978 | 34.45 | 37.14 | 48.40 | 55.50 | 60.13 | 70.68 | 76.79 | b | 74.53 | b | 66.57 | 59.17 | j | 42.28 | 23.15 | 53.60 | a | |||||||||
1979 | 23.56 | 31.12 | 42.74 | 51.42 | 60.34 | 70.13 | 77.23 | 73.61 | 69.53 | a | 57.83 | a | 35.50 | a | 30.08 | 51.93 | ||||||||||
1980 | 33.53 | 39.95 | 41.73 | 51.72 | 57.87 | 71.83 | c | 78.48 | 74.50 | 66.50 | 53.63 | a | 41.89 | b | 38.12 | a | 54.15 | |||||||||
1981 | 34.77 | 38.44 | c | 43.66 | 55.58 | e | 61.71 | c | 75.50 | b | 77.85 | d | 75.05 | b | 67.90 | f | 53.30 | d | 43.07 | c | 32.96 | c | 53.81 | a | ||
1982 | 25.02 | i | 33.20 | a | 42.03 | b | 48.02 | f | 59.15 | e | 68.11 | c | 74.55 | a | 74.52 | b | 64.31 | a | 49.78 | b | 38.88 | b | 31.50 | e | 53.60 | b |
1983 | 31.44 | d | 36.23 | b | 42.98 | c | 44.92 | d | 54.16 | b | 65.90 | d | 73.93 | d | 75.32 | a | 67.85 | 54.19 | 41.11 | c | 32.24 | d | 51.69 | |||
1984 | 27.04 | e | 32.80 | b | 40.15 | d | 46.04 | d | 63.24 | 66.27 | b | 76.93 | c | 74.62 | b | 66.57 | 47.74 | 39.98 | ----- | z | 52.85 | a | ||||
1985 | 30.33 | p | 29.00 | h | 42.30 | d | 53.50 | b | 63.61 | d | 75.28 | 77.38 | b | 75.65 | d | 62.69 | a | 54.70 | d | 39.88 | 32.10 | b | 57.71 | b | ||
1986 | 34.09 | d | 40.59 | a | 49.10 | a | 52.89 | c | 60.42 | f | 71.16 | b | 73.97 | a | 76.25 | a | 61.13 | c | 51.07 | a | 42.00 | 31.98 | b | 53.11 | a | |
1987 | 26.63 | 36.30 | a | 40.65 | 54.36 | a | 60.67 | a | 74.07 | b | 75.02 | 72.85 | a | 65.03 | 56.13 | 39.23 | 29.75 | a | 52.56 | |||||||
1988 | 23.77 | a | 35.28 | 41.92 | 51.98 | b | 60.76 | 73.83 | 79.03 | 76.02 | a | 64.08 | 58.26 | 41.07 | 28.84 | 52.90 | ||||||||||
1989 | 21.70 | c | 33.70 | 47.16 | 56.53 | 64.16 | 71.19 | a | 79.63 | 73.92 | 67.90 | 54.17 | a | 42.13 | 29.18 | 53.45 | ||||||||||
1990 | 27.76 | 36.50 | 46.89 | 55.00 | 61.10 | 74.00 | a | 78.13 | 75.55 | 70.05 | 53.89 | 41.03 | 24.87 | a | 53.73 | |||||||||||
1991 | 22.21 | 34.71 | 42.18 | 48.80 | 61.63 | 70.75 | 76.92 | 76.35 | 67.22 | a | 55.61 | 39.47 | 28.39 | 52.02 | ||||||||||||
1992 | 24.35 | 37.69 | 46.85 | 58.05 | 64.47 | 71.53 | 73.98 | 75.58 | 67.33 | 57.98 | 36.82 | 27.52 | 53.51 | |||||||||||||
1993 | 35.00 | 37.43 | 45.53 | 50.40 | 61.95 | 69.80 | 75.89 | 73.39 | 65.07 | 52.50 | 37.03 | 30.98 | 52.91 | |||||||||||||
1994 | 31.68 | 33.23 | 47.13 | 52.85 | 63.77 | 75.68 | 79.92 | 79.25 | a | 67.58 | e | 53.98 | e | 38.13 | d | 33.74 | 54.75 | |||||||||
1995 | 33.69 | 43.30 | a | 46.05 | b | 49.24 | c | 56.88 | a | 67.53 | a | 74.09 | b | 77.76 | 68.19 | c | 53.89 | 43.80 | 34.14 | b | 54.05 | |||||
1996 | 30.21 | 40.00 | 44.44 | 51.55 | 65.05 | 73.33 | 77.97 | 77.05 | 63.52 | b | 52.20 | a | 40.72 | 31.87 | a | 53.99 | ||||||||||
1997 | 33.61 | 36.80 | 45.65 | 47.20 | 61.71 | 70.07 | 74.73 | 73.60 | b | 67.46 | b | 53.97 | a | 41.00 | 30.23 | 53.00 | ||||||||||
1998 | 34.84 | 36.86 | 42.43 | a | 48.23 | 60.17 | a | 67.31 | a | 78.55 | b | 75.85 | 69.80 | 53.00 | a | 41.67 | 30.72 | b | 53.29 | |||||||
1999 | 34.61 | 37.81 | a | 47.50 | 45.53 | 57.15 | 68.08 | 76.06 | 72.85 | 63.98 | 54.97 | 44.17 | a | 30.73 | a | 52.79 | ||||||||||
2000 | 32.53 | 38.98 | b | 43.50 | b | 54.77 | b | 64.39 | 72.59 | a | 78.23 | 77.44 | 66.70 | 54.71 | 35.83 | 32.31 | 54.33 | |||||||||
2001 | 29.43 | c | 36.20 | a | 44.78 | a | 52.38 | 63.40 | a | 71.77 | b | 78.02 | 74.05 | 67.88 | 54.97 | 44.13 | 28.66 | 53.81 | ||||||||
2002 | 27.79 | 30.52 | 40.05 | a | 55.09 | a | 60.96 | d | 74.43 | 79.20 | a | 73.34 | b | 66.05 | a | 51.84 | 41.74 | i | 32.05 | j | 55.93 | b | ||||
2003 | 36.70 | a | 36.11 | f | 43.73 | e | 52.00 | d | 63.11 | c | 72.27 | 83.34 | 79.64 | c | 66.87 | c | 59.90 | f | 40.88 | d | 31.76 | j | 59.84 | c | ||
2004 | 26.89 | d | 33.85 | f | 50.92 | 54.13 | 62.90 | e | 73.05 | a | 77.68 | c | 75.42 | a | 64.84 | b | 54.83 | a | 41.89 | b | 32.79 | 55.94 | a | |||
2005 | 39.05 | 40.09 | a | 44.38 | a | 50.98 | a | 62.47 | 68.75 | 80.53 | 74.60 | a | 65.43 | a | 55.00 | 43.15 | 31.27 | 54.64 | ||||||||
2006 | 33.10 | 35.77 | 42.45 | 53.37 | 64.19 | 73.55 | 78.72 | a | 73.37 | 60.45 | 50.23 | 33.36 | e | 29.11 | 52.31 | |||||||||||
2007 | 27.16 | 38.88 | 46.18 | 53.18 | 62.74 | 73.90 | 81.95 | 78.53 | 69.10 | 53.81 | 45.23 | 30.73 | 55.12 | |||||||||||||
2008 | 26.29 | 33.43 | 43.55 | 49.20 | 59.24 | 71.15 | 80.27 | 77.16 | 66.80 | 55.16 | 45.20 | 31.02 | 53.21 | |||||||||||||
2009 | 31.50 | 38.57 | 46.13 | a | 50.83 | 65.63 | 68.84 | a | 79.58 | 75.87 | 69.18 | 51.47 | 45.23 | b | 25.19 | 54.00 | ||||||||||
2010 | 27.52 | 33.50 | 42.32 | 51.42 | 58.74 | 73.35 | 78.85 | 74.26 | 68.42 | 57.18 | 40.35 | 37.98 | 53.66 | |||||||||||||
2011 | 24.58 | 32.86 | 45.95 | 51.15 | 57.84 | 71.38 | 78.34 | 78.71 | 68.20 | 54.24 | 41.43 | 29.71 | 52.87 | |||||||||||||
2012 | 31.92 | 36.76 | 46.69 | 55.87 | 64.87 | ----- | z | 79.98 | 77.98 | 68.20 | 54.95 | 45.00 | 31.69 | 53.99 | a | |||||||||||
2013 | 22.02 | 33.00 | 44.66 | 50.50 | 62.15 | 75.25 | 80.68 | 75.31 | 67.98 | 50.84 | 42.10 | 27.06 | 52.63 | |||||||||||||
2014 | 32.85 | 39.36 | 45.63 | 50.60 | 60.95 | 71.23 | 80.26 | 73.50 | 69.58 | 56.44 | 42.12 | 36.44 | 54.91 | |||||||||||||
2015 | 34.74 | 41.41 | 49.13 | 52.38 | 58.98 | 73.48 | 75.76 | 75.71 | 69.73 | 58.90 | 41.20 | 27.95 | 54.95 | |||||||||||||
2016 | 30.19 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 30.19 | k | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 29.25 | 36.25 | 44.16 | 51.69 | 61.48 | 71.03 | 77.65 | 75.26 | 66.22 | 54.22 | 41.05 | 30.55 | 53.30 | |||||||||||||
S.D. | 4.66 | 3.20 | 2.93 | 2.92 | 2.49 | 2.71 | 2.13 | 1.95 | 2.51 | 2.51 | 2.64 | 3.19 | 1.04 | |||||||||||||
SKEW | -0.14 | -0.25 | 0.16 | -0.18 | -0.43 | -0.08 | 0.15 | 0.36 | -0.66 | -0.01 | -0.65 | 0.21 | -0.24 | |||||||||||||
MAX | 39.05 | 43.30 | 50.92 | 58.05 | 65.63 | 75.68 | 83.34 | 79.64 | 70.05 | 60.80 | 45.23 | 38.12 | 55.12 | |||||||||||||
MIN | 18.78 | 28.00 | 38.58 | 44.92 | 54.16 | 65.90 | 73.93 | 70.92 | 60.27 | 47.74 | 33.36 | 23.15 | 51.08 | |||||||||||||
YRS | 53 | 52 | 53 | 54 | 54 | 52 | 53 | 53 | 52 | 52 | 54 | 53 | 37 |