YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 57.58 | s | 51.13 | 39.42 | 45.28 | j | ||
1952 | 36.66 | b | 43.79 | 45.00 | 67.17 | 72.00 | 76.73 | 91.13 | 90.65 | 82.57 | 76.71 | 50.14 | b | 42.23 | 64.56 | |||||||||||
1953 | 52.55 | 50.14 | 55.77 | 62.47 | 64.03 | 73.73 | 95.71 | 88.35 | 86.57 | 68.80 | a | 57.70 | 44.39 | 66.68 | ||||||||||||
1954 | 44.55 | 52.61 | 50.83 | b | 66.93 | a | 80.32 | 78.27 | 93.90 | 83.32 | 81.83 | 69.19 | 59.47 | 41.55 | 66.90 | |||||||||||
1955 | 37.23 | 42.07 | 51.32 | 56.10 | 71.10 | 81.67 | 88.42 | 95.90 | 81.00 | 70.10 | 52.73 | 46.23 | a | 64.49 | ||||||||||||
1956 | 44.81 | 41.52 | 56.35 | 64.03 | 71.03 | 81.87 | 92.23 | 88.06 | 84.03 | 63.13 | 54.43 | 45.74 | 65.60 | |||||||||||||
1957 | 35.26 | 48.64 | 54.26 | 61.50 | 67.43 | a | 84.47 | 91.32 | 87.90 | 83.77 | 59.87 | 48.41 | a | 47.35 | 64.18 | |||||||||||
1958 | 43.03 | 51.26 | a | 48.13 | a | 59.43 | 82.16 | 79.70 | 90.06 | 93.58 | 80.40 | 73.26 | 56.90 | 53.26 | 67.60 | |||||||||||
1959 | 47.30 | a | 45.50 | 57.16 | 69.50 | 66.55 | 85.87 | 96.00 | 89.13 | a | 75.63 | 69.97 | 59.17 | 44.39 | 67.18 | |||||||||||
1960 | 36.03 | 41.59 | 57.47 | a | 65.07 | 70.32 | 86.80 | 96.10 | 89.16 | 84.23 | 68.77 | 49.86 | a | 45.00 | 65.87 | |||||||||||
1961 | 47.68 | 50.86 | 54.16 | 63.59 | a | 70.81 | 88.40 | 94.55 | 92.00 | 74.30 | 66.13 | ----- | z | ----- | z | 70.25 | b | |||||||||
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 55.97 | 46.42 | 51.19 | j | ||
1963 | 44.42 | 55.75 | 52.35 | 55.40 | 72.74 | 76.13 | 89.32 | 89.94 | 83.67 | 73.43 | a | 52.75 | v | 44.71 | 67.08 | a | ||||||||||
1964 | 41.39 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 41.39 | k | |
1965 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1966 | ----- | z | ----- | z | ----- | z | 65.05 | i | 80.62 | b | 81.79 | a | 91.42 | 91.81 | 84.73 | 73.39 | 53.27 | 43.29 | 75.04 | d | ||||||
1967 | 46.58 | 52.68 | 54.13 | a | 53.03 | 78.04 | e | 77.87 | 96.10 | 95.25 | c | 76.66 | a | 67.52 | b | 56.60 | 41.35 | 66.32 | ||||||||
1968 | 47.87 | 51.72 | 60.97 | 65.53 | 74.83 | a | ----- | z | 93.00 | ----- | z | ----- | z | ----- | z | 57.30 | t | 41.23 | 62.17 | e | ||||||
1969 | ----- | z | ----- | z | ----- | z | 66.87 | 78.81 | 78.33 | 90.23 | 90.35 | 81.23 | 57.97 | 55.63 | 45.35 | 71.64 | c | |||||||||
1970 | 42.45 | 53.50 | 54.45 | 55.90 | 72.00 | 79.87 | 89.97 | 90.26 | 73.40 | 62.03 | 50.37 | 38.10 | 63.52 | |||||||||||||
1971 | 45.84 | 50.30 | a | 51.35 | 60.07 | a | 67.32 | 73.47 | 86.94 | 89.10 | 72.13 | 58.71 | 49.60 | 37.13 | 61.83 | |||||||||||
1972 | 39.03 | 46.93 | 60.13 | 59.63 | 74.13 | 80.37 | 87.84 | 86.29 | 72.13 | 61.10 | 47.57 | 36.61 | 62.65 | |||||||||||||
1973 | 37.33 | a | 50.93 | 51.94 | 62.57 | ----- | z | 86.44 | e | 93.39 | 89.61 | 78.90 | a | ----- | z | 53.06 | l | 45.32 | c | 66.27 | c | |||||
1974 | 39.97 | 47.68 | 51.30 | a | 60.40 | 71.48 | 89.47 | 96.05 | i | 89.83 | a | 85.63 | 67.68 | 54.00 | 41.85 | e | 63.57 | a | ||||||||
1975 | 42.26 | 43.85 | a | 48.65 | 52.37 | 70.42 | 79.37 | 92.55 | 85.71 | 84.73 | 60.88 | e | 49.70 | c | 47.50 | c | 63.17 | |||||||||
1976 | 42.87 | a | 49.60 | i | 49.26 | 60.32 | e | 77.84 | 79.52 | a | 92.55 | 82.74 | 81.03 | 69.23 | 60.72 | a | 49.62 | g | 69.61 | b | ||||||
1977 | 40.65 | k | 52.14 | 50.61 | 69.10 | 64.97 | 87.77 | ----- | z | 86.60 | p | 79.00 | 69.94 | 54.27 | 45.90 | 63.74 | c | |||||||||
1978 | 42.84 | 46.36 | 55.58 | l | 58.40 | 69.03 | 81.55 | a | 92.52 | b | 88.74 | 75.43 | 77.29 | 49.72 | a | 38.83 | h | 68.19 | b | |||||||
1979 | 33.35 | 43.64 | 55.94 | 61.69 | a | 75.57 | a | 83.83 | a | 92.06 | 86.55 | 86.50 | f | 61.67 | m | 47.87 | 47.28 | b | 62.78 | b | ||||||
1980 | 41.70 | a | 49.54 | a | 50.16 | 65.20 | 69.74 | 77.17 | 91.17 | a | 88.13 | 79.80 | e | 69.63 | a | 53.83 | 49.00 | 65.42 | ||||||||
1981 | 40.03 | 48.46 | 54.81 | 65.93 | a | 70.13 | 83.77 | 93.04 | c | 95.23 | 83.23 | 61.68 | 53.97 | 46.26 | 66.38 | |||||||||||
1982 | 39.60 | a | 45.65 | b | 50.53 | a | 59.07 | a | 73.71 | c | 80.00 | 88.37 | a | 91.93 | b | 77.08 | d | 63.45 | b | 44.82 | b | 41.14 | c | 62.95 | ||
1983 | 43.19 | 48.61 | 50.47 | a | 56.50 | 70.32 | 78.00 | 87.78 | d | 89.00 | d | 80.15 | c | 69.90 | 48.67 | 39.89 | d | 63.54 | ||||||||
1984 | 35.24 | b | 43.57 | a | 54.16 | 57.54 | b | 72.62 | e | 76.73 | d | 94.28 | b | 92.00 | 80.63 | c | 58.69 | b | 47.18 | m | 37.43 | c | 63.90 | a | ||
1985 | 37.37 | a | 43.21 | 50.83 | a | 68.43 | 75.00 | a | 86.53 | 96.74 | d | 89.48 | 71.34 | a | 66.33 | a | 44.14 | a | 38.30 | a | 63.98 | |||||
1986 | 48.74 | 50.61 | 61.35 | 62.53 | 73.47 | a | 87.59 | a | 88.10 | b | 94.07 | b | 69.64 | b | 67.97 | b | 55.04 | b | 42.19 | 66.78 | ||||||
1987 | 38.87 | 47.43 | 52.86 | b | 71.89 | c | ----- | z | 86.15 | c | 89.41 | b | 90.70 | a | 82.50 | p | 73.13 | a | 48.35 | d | 40.17 | a | 63.90 | b | ||
1988 | 39.48 | d | 51.90 | 56.96 | c | 63.85 | d | 73.19 | d | 83.92 | d | 95.35 | 91.67 | a | 80.43 | 76.60 | a | 48.27 | 36.72 | b | 66.53 | |||||
1989 | 35.71 | 37.48 | a | 55.66 | b | 67.37 | c | 70.57 | a | 82.83 | 94.13 | a | 85.71 | c | 79.81 | d | 64.55 | b | 54.40 | 46.87 | 64.59 | |||||
1990 | 44.48 | 42.71 | 58.07 | a | 70.13 | 67.32 | c | 82.29 | b | 92.03 | b | 88.38 | b | 84.52 | a | 69.41 | d | 51.28 | a | 34.10 | a | 65.39 | ||||
1991 | 42.37 | d | 56.33 | a | 49.35 | 59.96 | b | 63.36 | c | 75.67 | c | 91.45 | b | 90.03 | 82.30 | c | 70.24 | b | 50.19 | c | 42.80 | a | 64.50 | |||
1992 | 43.48 | 52.83 | 60.62 | b | 70.41 | c | 82.28 | b | 82.00 | b | 88.10 | 90.59 | b | 81.46 | b | 70.54 | e | 45.59 | a | 35.47 | a | 66.95 | ||||
1993 | 32.00 | d | 35.24 | c | 54.72 | b | 58.78 | c | 74.28 | b | 73.74 | c | 81.00 | c | 83.31 | e | 80.79 | f | 66.31 | e | 46.34 | a | 40.90 | a | 58.78 | a |
1994 | 47.13 | 44.50 | 59.69 | b | 63.96 | e | 73.13 | a | 85.72 | e | 92.26 | d | 91.69 | e | 83.04 | d | 65.14 | c | 41.00 | b | 36.03 | a | 65.27 | |||
1995 | 41.41 | b | 57.44 | a | 51.07 | b | 60.54 | f | 66.07 | b | 75.25 | b | 88.00 | d | 89.04 | d | 81.38 | f | 67.65 | e | 59.38 | a | 40.96 | f | 66.15 | c |
1996 | 42.68 | f | 45.96 | a | 57.76 | b | 62.62 | i | 68.48 | f | 84.36 | h | 92.62 | e | 90.65 | e | 77.65 | d | 65.46 | c | 52.32 | b | 44.13 | 65.82 | d | |
1997 | 42.62 | b | 46.75 | d | 59.41 | b | 58.20 | e | 77.00 | d | 79.35 | d | 88.08 | g | ----- | z | ----- | z | 64.22 | h | 53.30 | c | 39.57 | a | 57.02 | d |
1998 | 44.71 | c | 42.92 | d | 52.96 | e | 57.89 | c | 61.96 | g | 74.08 | e | 91.30 | d | 93.70 | h | 80.04 | d | 61.32 | i | 47.07 | b | 38.11 | d | 58.79 | c |
1999 | 42.31 | b | 43.85 | b | 51.89 | d | 58.43 | g | 69.93 | d | 80.87 | g | 91.07 | c | 86.57 | h | 79.90 | a | 73.11 | c | 58.00 | a | 44.45 | 61.61 | c | |
2000 | 43.17 | g | 46.96 | a | 52.54 | g | 67.52 | c | 72.79 | g | 86.12 | d | 90.54 | c | 91.18 | c | 78.92 | d | 62.90 | a | 42.96 | c | 41.45 | b | 67.62 | c |
2001 | 36.83 | a | 39.92 | b | 57.92 | g | 57.32 | e | 86.33 | v | 82.80 | e | 88.07 | b | 92.32 | c | 82.81 | d | 69.41 | d | 51.11 | b | 37.92 | e | 63.85 | b |
2002 | 40.13 | 47.40 | c | 50.59 | d | 63.89 | b | 72.96 | c | 83.62 | a | 94.26 | 87.43 | h | 79.67 | c | 63.93 | c | 52.96 | b | 44.07 | c | 63.04 | a | ||
2003 | 49.90 | b | 44.33 | d | 57.10 | a | 55.79 | b | 69.64 | c | 83.48 | c | 95.61 | 88.89 | c | 80.80 | 71.45 | b | 45.25 | b | 41.63 | d | 65.32 | |||
2004 | 38.67 | a | 40.93 | a | 61.65 | 64.29 | b | 72.41 | b | 81.86 | b | 91.80 | a | 87.32 | 78.85 | c | 63.07 | b | 48.04 | b | 42.26 | l | 66.26 | a | ||
2005 | 34.90 | 43.26 | a | 56.28 | b | 60.21 | b | 66.52 | 75.79 | b | 94.03 | a | 91.48 | d | 76.96 | d | 65.10 | a | 50.07 | a | 40.13 | 62.89 | ||||
2006 | 43.64 | c | 46.42 | b | 45.56 | d | 59.67 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 45.21 | i |
2007 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2008 | ----- | z | ----- | z | ----- | z | 61.57 | w | 70.33 | s | 82.85 | c | 94.11 | c | 92.71 | g | 83.25 | b | 67.90 | 54.23 | 40.06 | 70.40 | f | |||
2009 | 44.17 | a | 47.29 | 53.86 | c | 62.77 | 75.90 | 76.80 | 93.06 | 90.03 | a | 85.67 | 61.61 | 53.10 | 36.55 | 65.07 | ||||||||||
2010 | 42.81 | 47.64 | 54.58 | 59.33 | 63.48 | 79.70 | 92.87 | a | 88.13 | a | 81.09 | h | 66.73 | a | 46.38 | a | 41.84 | 62.14 | a | |||||||
2011 | 41.16 | 43.89 | 51.00 | b | 56.13 | 66.03 | b | 77.10 | 91.52 | 93.68 | 85.83 | a | 69.27 | p | 48.30 | c | 43.35 | 63.45 | a | |||||||
2012 | 45.94 | 47.07 | a | 56.42 | 65.90 | 73.74 | 81.79 | a | 95.52 | 94.77 | 86.17 | a | 67.94 | 53.44 | c | 40.65 | 67.45 | |||||||||
2013 | 32.00 | 46.14 | 60.48 | 65.11 | b | 74.77 | 86.43 | 98.32 | c | 92.77 | 79.96 | b | 63.26 | 53.93 | 38.68 | f | 68.47 | a | ||||||||
2014 | 52.39 | 53.07 | a | 59.23 | a | 66.90 | 77.39 | 84.59 | a | 95.43 | a | 89.74 | 83.93 | 73.16 | 53.87 | 45.13 | 69.57 | |||||||||
2015 | 49.17 | a | 56.41 | a | 65.06 | 65.33 | 71.04 | c | 91.43 | 90.58 | 93.65 | 85.53 | 74.52 | 47.93 | a | 40.13 | 69.23 | |||||||||
2016 | 39.71 | 53.55 | 56.84 | 69.70 | 72.74 | 89.10 | 93.48 | 93.26 | 82.43 | 68.35 | 57.17 | 39.03 | a | 67.95 | ||||||||||||
2017 | 34.29 | 46.61 | 59.58 | 61.63 | 75.04 | e | 81.80 | y | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 55.43 | g | ||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 41.71 | 47.40 | 54.52 | 62.44 | 72.17 | 81.54 | 91.98 | 90.06 | 80.47 | 67.49 | 51.58 | 42.09 | 65.46 | |||||||||||||
S.D. | 4.87 | 4.75 | 4.29 | 4.73 | 4.56 | 4.49 | 3.05 | 2.97 | 4.09 | 4.79 | 4.46 | 3.88 | 1.88 | |||||||||||||
SKEW | 0.05 | -0.01 | 0.10 | -0.05 | 0.16 | 0.05 | -0.71 | -0.33 | -0.76 | -0.02 | -0.06 | 0.22 | 0.17 | |||||||||||||
MAX | 52.55 | 57.44 | 65.06 | 71.89 | 82.28 | 91.43 | 98.32 | 95.90 | 86.57 | 77.29 | 60.72 | 53.26 | 69.57 | |||||||||||||
MIN | 32.00 | 35.24 | 45.00 | 52.37 | 63.36 | 73.47 | 81.00 | 82.74 | 69.64 | 57.97 | 41.00 | 34.10 | 61.83 | |||||||||||||
YRS | 57 | 58 | 56 | 56 | 54 | 57 | 57 | 53 | 53 | 54 | 57 | 56 | 33 |