YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 28.31 | e | 28.31 | k |
1962 | 21.28 | a | 31.88 | 36.10 | 48.73 | 51.02 | 59.25 | 65.53 | a | 64.60 | 59.23 | 49.06 | 39.45 | 33.82 | 46.66 | |||||||||||
1963 | 22.88 | a | 41.48 | 38.31 | 42.02 | b | 56.76 | 57.25 | 66.02 | a | 66.15 | a | 62.10 | 53.26 | 39.52 | 27.97 | 47.81 | |||||||||
1964 | 27.98 | 31.38 | ----- | z | 43.43 | a | 51.45 | 57.39 | b | 67.57 | a | 64.11 | 55.88 | q | 48.55 | 35.70 | 31.60 | a | 45.92 | b | ||||||
1965 | 29.26 | b | 32.21 | k | 33.50 | 47.33 | 50.40 | 59.88 | 68.45 | 64.78 | a | 54.05 | 52.58 | 41.63 | 28.92 | 48.25 | a | |||||||||
1966 | 31.48 | 31.75 | 39.13 | 46.12 | 57.42 | 59.57 | 69.32 | 68.73 | 62.43 | 47.11 | 40.77 | 30.89 | 48.73 | |||||||||||||
1967 | 34.73 | 35.70 | 38.37 | 38.60 | 52.50 | 60.10 | a | 72.73 | 72.69 | 63.92 | 47.50 | 39.40 | 27.87 | 48.68 | ||||||||||||
1968 | 28.08 | a | 37.90 | 41.03 | 41.88 | 52.60 | 62.37 | 71.23 | 63.63 | a | 57.23 | 46.39 | 36.48 | 30.53 | 47.45 | |||||||||||
1969 | 31.63 | 30.64 | 36.65 | 45.57 | 57.06 | 61.30 | 68.79 | 68.42 | 58.95 | 42.87 | 37.27 | 32.90 | 47.67 | |||||||||||||
1970 | 34.02 | 37.43 | a | 38.29 | 39.63 | 52.44 | 64.08 | 70.10 | 69.81 | 52.05 | 43.82 | 39.13 | 29.15 | 47.49 | ||||||||||||
1971 | 32.79 | 34.00 | 35.19 | 43.75 | 54.31 | 58.52 | 68.90 | 73.22 | a | 53.32 | 44.48 | 36.15 | 27.55 | 46.85 | ||||||||||||
1972 | 28.90 | 33.88 | 41.77 | 43.00 | 54.35 | 62.12 | a | 68.56 | 69.47 | 54.15 | 47.58 | 35.88 | 23.67 | a | 46.95 | |||||||||||
1973 | 28.11 | 33.82 | 38.60 | 44.47 | 54.81 | 61.82 | 69.52 | a | 68.91 | b | 57.78 | 48.73 | 38.22 | 34.58 | 48.28 | |||||||||||
1974 | 27.55 | 33.98 | 37.60 | 43.57 | 50.34 | 66.13 | 67.97 | 67.37 | 60.77 | 47.68 | 37.55 | 31.40 | 47.66 | |||||||||||||
1975 | 28.24 | 32.38 | 35.95 | b | 38.22 | a | 49.60 | 58.63 | 72.18 | 63.63 | 59.02 | 47.18 | 35.69 | a | 33.84 | 46.21 | ||||||||||
1976 | 29.93 | a | 31.57 | a | 32.92 | 42.25 | 54.34 | 57.70 | 69.15 | 61.92 | 57.60 | 46.17 | a | 38.67 | 28.77 | c | 45.91 | |||||||||
1977 | 21.42 | 33.95 | 36.68 | 48.38 | 47.56 | 65.48 | 67.08 | 69.73 | 55.95 | a | 47.42 | ----- | z | 35.32 | 48.09 | a | ||||||||||
1978 | 33.16 | b | 34.73 | 44.20 | a | 44.35 | 49.73 | 60.67 | 67.87 | a | 65.98 | a | 56.18 | b | 48.32 | 32.87 | 25.19 | 46.94 | ||||||||
1979 | 17.02 | 33.96 | 39.40 | 44.23 | 54.18 | ----- | z | 70.11 | 66.65 | a | 61.79 | a | 51.45 | 32.85 | 33.63 | a | 45.94 | a | ||||||||
1980 | 28.62 | b | 36.20 | b | 36.79 | 48.35 | 53.50 | d | 56.97 | a | 68.45 | 64.52 | 58.20 | 48.23 | 38.19 | a | 31.92 | 47.49 | ||||||||
1981 | 29.40 | 33.50 | 39.73 | 46.75 | 53.28 | a | 60.28 | 68.15 | 72.45 | 60.68 | 45.56 | 40.08 | 34.45 | 48.69 | ||||||||||||
1982 | 26.98 | i | 29.22 | a | 37.00 | 39.76 | a | 50.23 | 60.29 | a | 64.39 | c | 68.85 | a | 56.83 | a | 45.45 | c | 31.47 | a | 29.67 | b | 46.65 | a | ||
1983 | 32.86 | b | 37.28 | a | 41.47 | 42.10 | a | 52.32 | 58.48 | 64.14 | b | ----- | z | 57.59 | c | 48.00 | j | 40.32 | b | 24.53 | b | 45.11 | b | |||
1984 | 22.90 | a | 27.53 | 37.70 | a | 41.83 | a | 50.18 | 57.57 | 69.15 | a | 69.83 | a | 55.13 | 42.90 | a | 35.57 | 23.87 | a | 44.51 | ||||||
1985 | 22.44 | 27.16 | 34.29 | 50.27 | 55.66 | 63.47 | 74.35 | 65.73 | 51.87 | 46.00 | 29.38 | a | 18.34 | 44.91 | ||||||||||||
1986 | 33.18 | ----- | z | 45.32 | 45.67 | 55.36 | b | 68.23 | 66.16 | 72.29 | 53.97 | 49.02 | 40.40 | a | 25.48 | 50.46 | a | |||||||||
1987 | 27.34 | 34.61 | 40.21 | 52.68 | 58.31 | 65.03 | 66.24 | 66.80 | a | 61.55 | 51.95 | 37.70 | 30.24 | 49.39 | ||||||||||||
1988 | 27.78 | a | 34.17 | 40.32 | 49.03 | a | 54.16 | 66.57 | 71.71 | 68.50 | a | 58.10 | 56.24 | 38.29 | a | 27.13 | 49.33 | |||||||||
1989 | 27.02 | a | 24.89 | 41.21 | 49.63 | 53.35 | 64.48 | 71.00 | 66.17 | a | 60.22 | 48.60 | 37.52 | a | 32.21 | 48.02 | ||||||||||
1990 | 33.77 | 30.61 | 41.10 | 52.20 | 52.24 | 62.72 | 72.61 | 69.58 | 65.18 | 47.73 | 39.38 | 17.60 | b | 48.73 | ||||||||||||
1991 | 26.29 | 37.82 | 38.03 | 45.22 | 50.29 | 57.80 | 70.61 | 72.10 | 61.77 | 50.48 | 36.27 | b | 31.02 | a | 48.14 | |||||||||||
1992 | 31.71 | 39.50 | 44.68 | a | 50.77 | 60.31 | 65.48 | 67.18 | 70.47 | 58.95 | a | 52.29 | 32.88 | 28.52 | 50.23 | |||||||||||
1993 | 24.39 | 29.38 | 39.05 | 45.19 | a | 58.87 | 57.53 | 60.95 | 63.48 | b | 59.13 | 49.53 | 31.55 | a | 31.82 | 45.91 | ||||||||||
1994 | 34.58 | 31.34 | 43.93 | a | 49.40 | a | 57.41 | b | 61.80 | 72.73 | 71.24 | 62.78 | 47.55 | a | 31.43 | 29.47 | 49.47 | |||||||||
1995 | 34.89 | 38.68 | 39.32 | 43.97 | a | 52.71 | 58.97 | 69.15 | 65.70 | a | 61.00 | 45.13 | 43.20 | 30.55 | 48.60 | |||||||||||
1996 | 31.13 | 33.74 | 41.39 | 46.03 | a | 51.34 | 61.67 | 70.50 | 68.29 | 56.77 | 48.63 | a | 39.28 | 36.74 | 48.79 | |||||||||||
1997 | 32.13 | 34.77 | 42.29 | 44.80 | 57.45 | 60.98 | 67.73 | 69.50 | 61.95 | 47.73 | 39.58 | 29.53 | a | 49.04 | ||||||||||||
1998 | 36.80 | a | 35.07 | 40.37 | 44.97 | 51.58 | a | 58.33 | 73.78 | a | 71.27 | 64.20 | 46.82 | 40.23 | 29.76 | b | 49.43 | |||||||||
1999 | 35.44 | 35.48 | 39.03 | 43.88 | 51.68 | 61.02 | 67.73 | 69.13 | 58.78 | 50.66 | 43.98 | 30.89 | 48.97 | |||||||||||||
2000 | 33.44 | 38.91 | a | 39.37 | 49.93 | b | 55.08 | 63.28 | a | 70.89 | 70.73 | 58.47 | 47.89 | 31.10 | 29.61 | 49.06 | ||||||||||
2001 | 27.03 | 31.68 | 42.61 | 44.65 | d | 57.58 | a | 61.95 | 69.18 | 73.42 | 62.72 | 50.72 | b | 39.78 | 29.22 | a | 49.21 | |||||||||
2002 | 31.41 | b | 31.64 | 37.73 | 46.50 | 53.92 | 63.83 | 73.95 | 66.42 | 60.67 | 45.82 | 37.23 | 34.70 | a | 48.65 | |||||||||||
2003 | 37.28 | a | 33.31 | a | 42.40 | e | 44.79 | b | 54.30 | a | 64.50 | 75.50 | 71.46 | c | 61.63 | 54.24 | 34.48 | 34.77 | a | 50.72 | ||||||
2004 | 28.10 | 31.76 | 45.26 | 49.26 | a | 54.06 | 63.35 | 72.24 | 69.69 | 58.08 | 48.97 | 36.22 | a | 33.73 | 49.23 | |||||||||||
2005 | 30.82 | 33.54 | 42.30 | a | 46.20 | 53.90 | 57.98 | 72.07 | a | 70.31 | 58.13 | 48.61 | 36.30 | 29.16 | 48.28 | |||||||||||
2006 | 35.03 | 31.48 | 37.76 | 46.38 | 55.45 | a | 65.10 | 75.08 | 67.87 | 59.40 | 47.10 | 40.30 | 29.69 | 49.22 | ||||||||||||
2007 | 26.50 | 37.84 | 44.34 | 46.92 | 56.92 | 64.43 | 76.76 | 70.10 | 59.52 | 47.16 | 38.22 | 29.98 | a | 49.89 | ||||||||||||
2008 | 28.77 | a | 34.86 | 37.10 | 41.30 | 54.82 | 61.53 | 71.45 | a | 69.94 | 59.83 | 49.37 | ----- | z | 29.55 | 48.96 | a | |||||||||
2009 | 31.44 | 32.76 | a | 37.58 | 45.62 | 56.00 | 61.03 | 71.15 | 68.52 | 64.83 | 44.63 | 36.90 | 25.23 | 47.97 | ||||||||||||
2010 | 34.77 | 35.59 | 39.47 | 43.72 | 48.58 | 60.37 | 69.13 | 66.95 | 61.32 | 52.08 | 35.70 | 33.71 | 48.45 | |||||||||||||
2011 | 30.45 | 32.23 | 39.71 | 41.50 | 49.40 | 57.33 | 67.21 | 70.29 | 63.22 | 48.11 | 34.65 | 28.60 | 46.89 | |||||||||||||
2012 | 32.31 | 33.67 | 41.97 | 47.70 | 52.11 | 59.55 | 72.55 | 71.24 | 62.35 | 47.05 | 39.10 | 30.90 | 49.21 | |||||||||||||
2013 | 20.89 | 32.54 | 39.79 | 45.10 | 54.06 | 63.18 | 74.10 | 71.56 | 60.00 | 44.77 | 37.00 | 25.61 | 47.38 | |||||||||||||
2014 | 29.87 | 36.39 | 41.24 | 45.12 | 54.34 | 60.28 | 73.77 | 67.39 | 60.73 | 51.74 | 35.18 | 34.21 | 49.19 | |||||||||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 29.60 | 33.72 | 39.53 | 45.33 | 53.62 | 61.30 | 69.86 | 68.49 | 59.27 | 48.25 | 37.18 | 29.78 | 48.14 | |||||||||||||
S.D. | 4.46 | 3.22 | 2.92 | 3.28 | 2.82 | 2.85 | 3.14 | 2.82 | 3.19 | 2.82 | 3.16 | 3.87 | 1.34 | |||||||||||||
SKEW | -0.64 | -0.14 | 0.01 | 0.06 | 0.11 | 0.33 | -0.17 | -0.33 | -0.42 | 0.50 | -0.41 | -0.94 | -0.70 | |||||||||||||
MAX | 37.28 | 41.48 | 45.32 | 52.68 | 60.31 | 68.23 | 76.76 | 73.42 | 65.18 | 56.24 | 43.98 | 36.74 | 50.72 | |||||||||||||
MIN | 17.02 | 24.89 | 32.92 | 38.22 | 47.56 | 56.97 | 60.95 | 61.92 | 51.87 | 42.87 | 29.38 | 17.60 | 44.51 | |||||||||||||
YRS | 52 | 51 | 52 | 53 | 53 | 52 | 53 | 52 | 52 | 52 | 51 | 54 | 45 |