YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 49.00 | t | 43.48 | 43.48 | k | |
1956 | 41.61 | 38.83 | 54.06 | 62.30 | 70.74 | 81.10 | 90.03 | 85.97 | 82.81 | c | 62.58 | 51.87 | 44.06 | 63.83 | ||||||||||||
1957 | 33.65 | 47.25 | 52.94 | 58.69 | a | 66.97 | a | 81.67 | 89.74 | 87.65 | 82.30 | 59.50 | a | 45.87 | 44.90 | 62.59 | ||||||||||
1958 | 39.81 | 49.43 | 46.68 | 57.20 | 79.23 | 77.69 | a | 87.87 | 91.55 | 79.80 | 72.37 | a | 53.97 | 51.33 | a | 65.58 | ||||||||||
1959 | 45.10 | 44.46 | 54.07 | c | 67.14 | a | 64.65 | 83.63 | 93.68 | 87.07 | a | 72.54 | b | 68.00 | 58.04 | b | 41.03 | a | 64.95 | |||||||
1960 | 33.77 | a | 40.10 | 55.26 | 61.80 | 67.03 | 85.90 | 94.81 | 88.00 | a | 82.37 | 66.32 | 47.73 | 42.60 | a | 63.81 | ||||||||||
1961 | 45.74 | 48.82 | 51.45 | 60.67 | 70.71 | 87.67 | 93.23 | 91.23 | 72.21 | a | 64.43 | a | 49.93 | a | 39.19 | 64.61 | ||||||||||
1962 | 34.16 | 40.82 | 47.10 | a | 66.27 | 64.26 | 79.60 | 87.10 | 85.90 | 81.30 | 65.48 | 51.93 | 43.62 | b | 62.30 | |||||||||||
1963 | 40.57 | a | 51.89 | a | 49.23 | a | 53.43 | 69.77 | a | 73.27 | 87.47 | a | 89.10 | a | 81.77 | 69.74 | 49.23 | 40.03 | 62.96 | |||||||
1964 | 39.84 | 45.79 | 49.00 | a | 57.77 | 67.97 | a | 73.87 | 91.50 | a | 87.52 | b | 77.83 | 72.58 | 48.63 | 42.00 | 62.86 | |||||||||
1965 | 39.50 | a | 48.93 | a | 52.90 | b | 61.17 | 65.13 | a | 76.30 | 88.77 | 83.20 | a | 71.97 | a | 73.68 | 53.10 | a | 41.65 | 63.02 | ||||||
1966 | 41.42 | 42.07 | a | 55.90 | 65.36 | b | 78.61 | 78.90 | a | 90.90 | 89.79 | b | 82.03 | 68.47 | a | 53.14 | a | 41.16 | 65.65 | |||||||
1967 | 43.30 | a | 50.86 | 51.52 | 50.57 | 73.00 | 77.31 | a | 93.13 | 93.97 | 83.60 | 70.35 | 53.38 | a | 39.42 | 65.03 | ||||||||||
1968 | 43.47 | a | 51.83 | 57.42 | 58.31 | a | 70.00 | a | 80.50 | 93.35 | 79.90 | 78.27 | 67.57 | a | 48.43 | 40.26 | 64.11 | |||||||||
1969 | 42.48 | b | 40.86 | 51.19 | 63.90 | 75.19 | 76.77 | 90.93 | a | 92.42 | 82.63 | 61.13 | a | 54.03 | 44.32 | 64.66 | ||||||||||
1970 | 43.00 | 52.64 | 49.87 | 54.30 | 71.07 | b | 79.10 | 91.10 | 94.32 | 76.20 | 63.52 | 50.20 | 36.45 | 63.48 | ||||||||||||
1971 | 45.42 | 48.25 | 50.68 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 49.24 | e | 36.00 | e | 45.92 | g | |||
1972 | 38.41 | b | 47.62 | 59.07 | a | 57.40 | 73.77 | 81.27 | 91.24 | b | 89.68 | 73.50 | 63.87 | 46.83 | ----- | z | 65.70 | a | ||||||||
1973 | 38.03 | 47.71 | 49.03 | 58.97 | a | 70.32 | 82.63 | 92.10 | 86.94 | 77.87 | 64.97 | 47.07 | 44.57 | a | 63.35 | |||||||||||
1974 | 39.52 | 47.39 | 52.13 | 59.47 | 69.68 | 88.60 | 90.42 | 88.03 | 83.70 | 65.93 | a | 52.90 | 41.39 | 64.93 | ||||||||||||
1975 | 40.52 | 42.29 | 48.23 | 50.17 | a | 69.07 | a | 76.87 | 91.58 | ----- | z | ----- | z | ----- | z | 49.03 | a | 45.40 | a | 57.02 | c | |||||
1976 | 44.10 | 47.32 | a | 48.48 | 59.38 | a | 76.10 | 78.90 | a | 91.03 | 80.77 | a | 79.07 | 68.87 | 61.28 | a | 49.42 | 65.39 | ||||||||
1977 | 35.16 | 51.96 | 49.17 | a | 68.53 | 63.17 | a | 85.07 | 90.39 | 87.87 | 78.73 | 68.97 | 51.10 | 46.42 | 64.71 | |||||||||||
1978 | 43.19 | 46.71 | 58.68 | 57.63 | 67.06 | 80.10 | a | 91.03 | 87.58 | 73.37 | 72.00 | 49.40 | 38.48 | 63.77 | ||||||||||||
1979 | 31.29 | 42.50 | 57.29 | 59.53 | 72.00 | 83.47 | 91.77 | 84.97 | 83.90 | 68.93 | b | 46.47 | 47.58 | 64.14 | ||||||||||||
1980 | 40.81 | 48.21 | 49.35 | 65.27 | 68.10 | 76.57 | 91.58 | 87.97 | 78.90 | 67.65 | 54.03 | 47.71 | 64.68 | |||||||||||||
1981 | 38.84 | 48.79 | 53.94 | 64.93 | a | 69.26 | 81.00 | 92.32 | 93.81 | 81.97 | 61.74 | 53.27 | 46.71 | 65.55 | ||||||||||||
1982 | 40.40 | a | 44.14 | 50.63 | a | 58.33 | 71.35 | 77.69 | a | 86.74 | 91.23 | 76.20 | 63.03 | 42.83 | 38.68 | 61.77 | ||||||||||
1983 | 44.13 | 47.81 | a | 49.87 | 55.14 | a | 68.77 | 78.50 | b | 88.22 | d | 88.19 | 80.70 | g | 69.68 | 48.93 | 35.45 | b | 61.34 | a | ||||||
1984 | 32.84 | 43.15 | b | 53.29 | 56.41 | c | 69.52 | f | 74.37 | c | 92.03 | 90.69 | b | 78.75 | b | 59.30 | d | 47.52 | c | 36.75 | c | 60.46 | a | |||
1985 | 35.73 | a | 40.71 | d | 48.42 | e | 68.43 | b | 73.60 | a | 85.56 | c | 94.67 | a | 87.54 | c | 70.88 | f | 65.15 | k | 42.81 | c | 34.44 | d | 61.19 | b |
1986 | 45.65 | 50.22 | a | 59.75 | c | 60.86 | a | 74.93 | d | 90.50 | d | 91.68 | 95.70 | d | 70.74 | g | 69.03 | b | 55.07 | c | 40.73 | a | 66.74 | a | ||
1987 | 41.07 | b | 46.44 | a | 52.48 | 73.04 | c | 74.07 | c | 83.93 | b | 86.40 | a | 89.46 | c | 84.86 | i | 73.90 | b | 50.47 | 40.03 | 64.66 | a | |||
1988 | 38.69 | b | 53.38 | c | 57.82 | c | 65.69 | d | 73.81 | e | 85.42 | f | 94.83 | a | 91.21 | c | 80.08 | e | 77.76 | f | 47.60 | e | 36.84 | 64.00 | b | |
1989 | 39.37 | d | 38.00 | b | 55.52 | f | 67.35 | d | 71.15 | d | 84.38 | a | 95.14 | c | 85.44 | d | 80.82 | b | 67.15 | e | 53.89 | c | 46.20 | a | 66.26 | a |
1990 | 44.26 | 44.40 | c | 58.74 | d | 68.93 | c | 67.52 | f | 82.70 | 93.52 | d | 90.11 | c | 86.10 | a | 69.71 | c | 56.56 | e | 37.41 | b | 66.59 | a | ||
1991 | 43.03 | a | 54.96 | c | 50.43 | c | 58.45 | a | 64.64 | f | 76.85 | c | 92.54 | c | 91.86 | b | 83.56 | c | 67.38 | g | 48.79 | b | 42.14 | b | 64.26 | b |
1992 | 45.60 | a | 54.15 | c | 60.90 | 69.13 | 82.32 | 84.46 | f | 88.17 | a | 91.77 | 81.47 | 70.10 | 44.73 | 37.68 | 66.00 | a | ||||||||
1993 | 33.74 | 36.14 | 53.84 | 58.97 | a | 74.73 | a | 74.96 | b | 82.00 | a | 85.66 | b | 82.20 | 66.50 | a | 47.79 | a | 42.74 | 61.61 | ||||||
1994 | 48.81 | 45.29 | 60.55 | 64.28 | a | 72.48 | 85.03 | 94.84 | 93.68 | 83.27 | 65.39 | 41.55 | a | 39.87 | 66.25 | |||||||||||
1995 | 44.17 | a | 57.14 | 52.16 | 58.83 | a | 66.87 | 76.38 | a | 88.70 | a | 89.97 | a | 82.77 | 69.48 | 59.77 | 42.55 | 65.73 | ||||||||
1996 | 43.39 | 46.69 | 57.20 | a | 63.11 | b | 68.48 | 83.23 | 94.63 | a | 93.07 | b | 78.57 | b | 65.14 | c | 53.70 | 44.74 | 66.00 | |||||||
1997 | 43.27 | a | 46.79 | 59.32 | 58.57 | b | 76.52 | 79.63 | 89.60 | a | 91.97 | 82.55 | a | 66.55 | 53.89 | b | 40.77 | 65.79 | ||||||||
1998 | 45.63 | a | 45.43 | 54.26 | 58.50 | 64.13 | a | 75.47 | 93.68 | 94.81 | 83.28 | a | 63.94 | 49.63 | 39.84 | 64.05 | ||||||||||
1999 | 46.06 | 46.19 | a | 53.32 | 59.07 | 70.19 | 80.13 | 92.43 | a | 89.58 | 82.13 | 74.29 | 58.53 | 45.50 | a | 66.45 | ||||||||||
2000 | 44.42 | 50.00 | 56.48 | 68.80 | 73.57 | a | 87.30 | 92.52 | 93.23 | 79.70 | 63.86 | b | 43.83 | 42.52 | 66.35 | |||||||||||
2001 | 38.52 | 43.82 | 57.03 | 59.83 | 79.71 | 84.73 | 90.26 | 95.71 | 84.52 | a | 71.84 | f | 53.29 | b | 39.75 | c | 66.11 | a | ||||||||
2002 | 41.50 | a | 48.30 | a | 51.07 | b | 63.93 | a | 72.56 | d | 84.07 | 96.57 | a | 87.60 | a | 81.53 | 65.85 | e | 55.44 | c | 49.12 | g | 68.04 | a | ||
2003 | 50.17 | h | 48.24 | c | 58.13 | a | 58.12 | e | 71.16 | f | 84.76 | m | 98.38 | j | 92.76 | n | 80.71 | i | 76.00 | j | 48.17 | g | 44.90 | k | 54.83 | i |
2004 | 37.74 | l | 40.11 | j | 62.60 | k | 65.70 | g | 71.39 | m | 81.12 | m | 91.39 | 84.97 | 77.63 | k | 56.75 | s | 48.50 | f | 44.94 | m | 88.18 | j | ||
2005 | 39.52 | f | 46.14 | g | 57.60 | k | 60.50 | f | 66.93 | d | 75.65 | g | 94.90 | b | 92.39 | h | 74.89 | b | 68.05 | k | 50.12 | e | 40.62 | e | 65.49 | g |
2006 | 46.00 | j | 46.69 | l | 48.32 | i | 57.11 | l | 75.53 | n | 86.10 | i | 96.43 | c | 89.60 | u | 80.00 | t | 68.00 | s | 52.35 | g | 43.38 | g | 96.43 | k |
2007 | 42.96 | g | 49.10 | h | 62.00 | l | 62.90 | j | 76.26 | l | 84.75 | n | 97.35 | h | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2008 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 70.33 | y | 59.91 | s | ----- | z | ----- | z |
2009 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 94.43 | q | 88.87 | 83.53 | 59.48 | 52.20 | 35.61 | 63.94 | g | |||||
2010 | 43.68 | 45.57 | 50.90 | 57.79 | b | 61.25 | c | 77.23 | 91.00 | 87.65 | 84.57 | 66.97 | 47.50 | 42.68 | 63.06 | |||||||||||
2011 | 41.94 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 41.94 | k | |
2012 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2017 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2018 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2019 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 40.99 | 46.74 | 53.36 | 61.08 | 70.89 | 80.68 | 91.40 | 89.27 | 80.21 | 66.93 | 50.73 | 41.69 | 64.33 | |||||||||||||
S.D. | 4.03 | 4.49 | 3.92 | 5.00 | 4.59 | 4.22 | 2.83 | 3.58 | 3.65 | 3.88 | 4.34 | 3.80 | 1.34 | |||||||||||||
SKEW | -0.62 | -0.11 | 0.27 | 0.18 | 0.26 | 0.28 | -0.68 | -0.33 | -0.83 | -0.08 | 0.16 | 0.26 | -0.26 | |||||||||||||
MAX | 48.81 | 57.14 | 60.90 | 73.04 | 82.32 | 90.50 | 96.57 | 95.71 | 86.10 | 74.29 | 61.28 | 51.33 | 66.45 | |||||||||||||
MIN | 31.29 | 36.14 | 46.68 | 50.17 | 61.25 | 73.27 | 82.00 | 79.90 | 71.97 | 59.30 | 41.55 | 34.44 | 61.61 | |||||||||||||
YRS | 49 | 49 | 48 | 48 | 45 | 45 | 50 | 48 | 44 | 43 | 50 | 49 | 33 |