YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1966 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 71.03 | m | 79.20 | a | 79.62 | a | 73.07 | 55.06 | 46.55 | b | 37.53 | 61.84 | f | |||
1967 | 36.55 | a | 39.39 | 43.32 | 47.67 | 60.02 | 69.02 | 82.05 | 83.47 | 74.28 | 54.50 | e | 44.08 | 31.97 | 55.53 | |||||||||||
1968 | 31.81 | 40.38 | a | 48.39 | 49.88 | 60.84 | 70.12 | 81.71 | 72.35 | 66.63 | 53.98 | 42.68 | 34.81 | 54.46 | ||||||||||||
1969 | 31.92 | 34.79 | 43.24 | 53.88 | 65.42 | 70.33 | g | 77.92 | 78.90 | 69.42 | 51.00 | a | 44.67 | 38.45 | 53.60 | a | ||||||||||
1970 | 35.40 | 40.64 | 43.44 | 47.75 | 60.31 | 71.90 | 79.71 | 81.47 | 62.52 | a | 52.19 | 43.40 | 33.66 | 54.37 | ||||||||||||
1971 | 33.27 | 38.45 | 40.66 | 51.38 | 62.93 | a | 65.43 | 79.16 | 84.02 | 63.75 | 52.32 | a | 40.47 | 32.27 | a | 53.68 | ||||||||||
1972 | 30.48 | 35.79 | 46.63 | 49.62 | 63.00 | 71.00 | 77.48 | a | 80.03 | 64.07 | a | 55.90 | a | 42.97 | 26.84 | 53.65 | ||||||||||
1973 | 29.55 | 38.35 | a | 45.45 | 52.66 | a | 63.29 | 70.32 | 80.79 | 78.18 | 66.72 | 53.69 | 41.35 | 37.05 | 54.78 | |||||||||||
1974 | 28.45 | a | 38.16 | 44.03 | 50.60 | 58.44 | 74.72 | a | 77.24 | 76.82 | 70.45 | 55.79 | 43.58 | 34.60 | 54.41 | |||||||||||
1975 | 29.21 | 34.45 | 40.73 | 44.95 | a | 56.15 | 65.97 | 81.35 | a | 72.34 | 69.00 | 52.50 | a | 39.82 | 32.87 | 51.61 | ||||||||||
1976 | 30.00 | 33.18 | a | 38.50 | 48.63 | 62.21 | 64.17 | 76.52 | 70.12 | a | 67.23 | 54.65 | 43.93 | 31.94 | 51.76 | |||||||||||
1977 | 24.31 | 35.89 | 40.26 | 55.33 | 55.08 | 74.16 | a | 75.94 | 78.50 | b | 63.42 | 53.68 | 39.92 | 36.18 | 52.72 | |||||||||||
1978 | 34.87 | 38.55 | 48.31 | b | 49.53 | 55.98 | 67.97 | 75.69 | 73.75 | a | 62.82 | 55.48 | 35.83 | 23.94 | 51.89 | |||||||||||
1979 | 15.05 | 31.54 | 44.39 | 49.45 | 59.52 | i | 70.19 | a | 78.50 | 76.73 | 70.70 | 57.03 | 37.83 | a | 34.05 | 51.40 | a | |||||||||
1980 | 30.22 | b | 37.29 | 44.52 | 57.50 | 61.84 | 65.98 | 77.29 | 73.56 | 66.69 | a | 55.37 | 42.85 | 35.65 | 54.06 | |||||||||||
1981 | 36.08 | 36.91 | q | 43.81 | 57.42 | k | 57.70 | a | 66.62 | b | 77.08 | 82.34 | 69.10 | 51.98 | 45.60 | 37.26 | 56.76 | b | ||||||||
1982 | 29.59 | c | 31.63 | a | 43.13 | e | 48.90 | 59.62 | a | 70.45 | 76.07 | c | 78.31 | 65.02 | a | 52.67 | b | 38.16 | a | 32.27 | a | 52.15 | ||||
1983 | 34.27 | c | 39.52 | b | 46.39 | c | 50.28 | a | 65.36 | m | 67.52 | a | 73.48 | b | 78.79 | 62.75 | b | 55.31 | 43.39 | b | 27.00 | b | 52.61 | a | ||
1984 | 28.09 | c | 31.20 | a | 44.34 | c | 50.65 | c | 58.05 | 66.12 | a | 79.42 | 80.37 | a | 65.92 | d | 52.48 | a | 42.04 | d | 27.42 | a | 52.17 | |||
1985 | 24.20 | a | 28.70 | 40.53 | 57.37 | 63.28 | a | 71.83 | a | 84.32 | 74.12 | a | 60.88 | a | 51.56 | 31.55 | 24.18 | 51.04 | ||||||||
1986 | 28.97 | a | 39.25 | b | 50.23 | 52.82 | 61.07 | a | 75.82 | 74.53 | b | 81.66 | 61.79 | b | 56.27 | 42.60 | 33.45 | 54.87 | ||||||||
1987 | 28.67 | b | 38.36 | 46.06 | 60.09 | a | 66.92 | 72.85 | 75.02 | 74.32 | 67.58 | f | 54.75 | a | 39.83 | 35.18 | a | 53.82 | a | |||||||
1988 | 30.69 | 37.97 | 45.98 | c | 55.68 | 62.43 | a | 73.50 | 79.94 | 79.61 | h | 67.57 | a | 64.18 | 43.48 | 32.50 | 53.99 | a | ||||||||
1989 | 28.53 | 24.36 | 43.79 | 57.32 | 60.82 | 72.53 | 79.78 | a | 73.57 | a | 67.67 | 54.73 | 44.12 | 36.19 | 53.62 | |||||||||||
1990 | 37.03 | 35.66 | 47.37 | 59.38 | 59.70 | a | 69.27 | 81.24 | 78.29 | 75.15 | 53.16 | 43.60 | d | 28.60 | f | 58.17 | a | |||||||||
1991 | 27.68 | a | 40.79 | 44.71 | 51.27 | 58.02 | 66.28 | 80.52 | 80.61 | 71.71 | a | 57.45 | 40.57 | a | 35.08 | 54.56 | ||||||||||
1992 | 35.30 | a | 43.62 | 52.34 | 57.42 | 68.45 | 74.20 | 75.81 | 79.70 | a | 67.07 | a | 59.79 | b | 40.03 | 31.37 | 57.09 | |||||||||
1993 | 28.93 | a | 32.11 | a | 43.05 | b | 52.08 | 66.56 | 65.88 | 68.38 | a | 73.28 | b | 67.60 | a | 57.77 | 36.86 | b | 35.48 | c | 52.33 | |||||
1994 | 35.60 | 34.79 | 47.98 | 55.77 | b | 63.24 | 69.37 | 81.48 | 81.34 | 71.95 | 55.74 | 36.87 | c | 33.45 | b | 55.63 | ||||||||||
1995 | 36.43 | d | 42.28 | a | 44.66 | c | 51.17 | d | 61.27 | a | 67.07 | b | 76.57 | d | 74.10 | b | 71.38 | a | 51.77 | g | 44.16 | n | 39.06 | m | 58.33 | c |
1996 | 34.14 | j | 35.57 | o | 47.50 | v | 54.00 | u | ----- | z | 72.25 | x | 79.60 | u | 79.21 | s | ----- | z | 50.59 | i | 44.12 | b | ----- | z | 44.12 | k |
1997 | 34.37 | a | 38.15 | a | 46.65 | 51.86 | a | 65.37 | a | 70.03 | 75.60 | 78.89 | 69.55 | a | 54.50 | 44.24 | c | 34.21 | b | 55.28 | ||||||
1998 | 36.26 | 40.61 | f | 45.58 | f | 52.28 | a | 59.48 | a | 66.23 | 82.79 | 81.05 | 73.78 | a | 54.52 | 45.90 | 34.36 | c | 58.66 | b | ||||||
1999 | 36.47 | a | 36.40 | d | 44.91 | b | 50.80 | 58.92 | 67.98 | a | 77.32 | 79.68 | a | 68.41 | a | 56.98 | a | 47.41 | c | 35.10 | 55.03 | |||||
2000 | 34.24 | 41.19 | 45.06 | 57.62 | 62.98 | 71.67 | a | 83.23 | i | 81.12 | b | 66.91 | b | 55.73 | 38.52 | a | 34.90 | 53.63 | a | |||||||
2001 | 31.15 | 35.15 | a | 46.90 | a | 50.60 | 64.28 | a | 69.07 | a | 78.67 | b | 81.95 | a | 71.78 | a | 56.60 | 46.72 | 34.20 | a | 55.59 | |||||
2002 | 34.70 | a | 33.58 | c | 41.98 | a | 54.30 | b | 60.42 | a | 71.72 | a | 82.36 | c | 76.28 | b | 69.96 | d | 53.95 | 43.75 | 39.57 | a | 55.21 | |||
2003 | 39.35 | a | 39.59 | 48.53 | b | 52.64 | a | 61.10 | b | 72.81 | a | 84.00 | 81.36 | b | 70.75 | 61.00 | a | 40.37 | 38.73 | 57.52 | ||||||
2004 | 31.71 | b | 36.20 | a | 49.94 | 57.25 | 60.91 | c | 71.71 | a | 81.12 | a | 79.02 | a | 67.16 | a | 57.26 | 43.79 | a | 38.27 | a | 56.19 | ||||
2005 | 35.09 | b | 38.75 | 47.55 | b | 52.96 | c | 62.19 | d | 67.32 | b | 80.10 | 80.21 | 67.84 | a | 56.10 | b | 41.10 | d | 31.25 | a | 55.04 | ||||
2006 | 37.02 | b | 35.79 | b | 44.20 | a | 54.47 | a | 65.48 | b | 73.40 | a | 85.34 | b | 78.47 | a | 69.78 | 57.44 | f | ----- | z | 33.93 | b | 57.79 | b | |
2007 | 30.28 | a | 40.04 | a | 50.00 | 55.78 | c | 64.48 | 73.07 | a | 86.33 | b | 78.41 | b | 69.07 | a | 53.70 | c | 42.07 | a | 35.58 | 56.57 | ||||
2008 | 29.13 | d | 35.78 | b | 42.25 | a | 48.93 | a | 62.58 | e | 69.96 | c | 79.53 | 78.11 | 68.05 | 54.31 | 45.78 | a | 33.00 | a | 53.95 | |||||
2009 | 30.80 | d | 35.70 | 42.07 | c | 53.14 | a | 63.08 | 69.10 | 80.45 | 78.15 | 73.63 | 50.69 | 41.93 | a | 29.73 | a | 54.04 | ||||||||
2010 | 37.21 | 39.91 | 45.90 | 50.66 | a | 55.62 | a | 66.40 | 76.89 | 76.40 | 68.25 | b | 58.48 | d | 42.07 | a | 35.83 | a | 54.47 | |||||||
2011 | 33.08 | a | 36.24 | a | ----- | z | 49.12 | a | 57.26 | 65.82 | 76.53 | a | 80.84 | 74.20 | 56.30 | a | 41.98 | 34.42 | 55.07 | a | ||||||
2012 | 35.57 | j | 39.02 | 46.85 | 56.68 | 61.21 | e | 67.90 | 82.10 | 79.79 | 69.40 | 54.74 | 46.17 | c | ----- | z | 60.39 | b | ||||||||
2013 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2014 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2015 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2016 | ----- | z | 40.29 | a | 46.87 | a | 58.03 | 62.05 | a | ----- | z | 76.35 | a | ----- | z | ----- | z | 57.10 | a | 48.41 | a | ----- | z | 55.59 | e | |
2017 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 83.50 | a | ----- | z | ----- | z | ----- | z | 44.95 | ----- | z | 64.22 | j | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 31.86 | 36.79 | 45.13 | 52.80 | 61.36 | 69.65 | 79.00 | 78.23 | 68.33 | 55.18 | 42.30 | 33.62 | 54.23 | |||||||||||||
S.D. | 4.43 | 3.73 | 2.95 | 3.56 | 3.10 | 2.99 | 3.39 | 3.26 | 3.56 | 2.59 | 3.29 | 3.58 | 1.63 | |||||||||||||
SKEW | -1.20 | -0.98 | 0.10 | 0.19 | -0.02 | 0.14 | -0.30 | -0.57 | -0.12 | 1.00 | -0.83 | -1.00 | -0.12 | |||||||||||||
MAX | 39.35 | 43.62 | 52.34 | 60.09 | 68.45 | 75.82 | 86.33 | 84.02 | 75.15 | 64.18 | 48.41 | 39.57 | 57.52 | |||||||||||||
MIN | 15.05 | 24.36 | 38.50 | 44.95 | 55.08 | 64.17 | 68.38 | 70.12 | 60.88 | 50.69 | 31.55 | 23.94 | 51.04 | |||||||||||||
YRS | 44 | 44 | 44 | 45 | 44 | 44 | 47 | 45 | 45 | 45 | 47 | 43 | 32 |