YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1963 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 83.45 | 83.33 | 65.74 | 48.50 | 34.39 | 63.08 | g | |||||
1964 | 38.29 | 43.90 | 47.83 | a | 57.27 | 67.48 | 74.60 | 85.35 | 78.60 | a | 71.59 | a | 65.19 | 41.47 | 34.97 | 58.88 | ||||||||||
1965 | 36.35 | 44.64 | 49.55 | 62.07 | 67.27 | a | 75.90 | a | 85.61 | 83.65 | 70.17 | 69.00 | 50.60 | 40.06 | 61.24 | |||||||||||
1966 | 38.43 | a | 44.11 | 51.81 | 60.97 | 73.06 | 73.90 | 82.16 | 84.45 | 80.14 | a | 62.03 | 49.57 | 42.60 | a | 61.94 | ||||||||||
1967 | 42.16 | 47.04 | 48.55 | 54.37 | 66.97 | 78.77 | 87.48 | 91.84 | 84.00 | 62.81 | 48.17 | 36.90 | a | 62.42 | ||||||||||||
1968 | 38.94 | 48.52 | 55.74 | 54.43 | 68.94 | 75.27 | 88.87 | 79.32 | 74.60 | 59.61 | 45.07 | a | 35.97 | 60.44 | ||||||||||||
1969 | 27.94 | 38.07 | a | 50.61 | 61.03 | 72.67 | a | 80.57 | 84.13 | 84.19 | 76.53 | 59.39 | 49.27 | 37.74 | 60.18 | |||||||||||
1970 | 36.29 | 47.61 | 49.84 | 54.18 | b | 70.19 | 81.77 | 87.87 | a | 88.45 | 70.30 | ----- | z | 47.79 | a | 37.42 | 61.06 | a | ||||||||
1971 | 40.29 | 45.07 | a | 45.68 | 59.73 | 71.42 | 71.47 | 85.16 | 90.65 | 69.79 | a | 58.26 | 45.87 | 35.97 | 59.95 | |||||||||||
1972 | 35.07 | a | 42.31 | 54.45 | 55.97 | 70.93 | a | 77.07 | 82.60 | a | 87.81 | 69.97 | 62.26 | 47.43 | 35.65 | 60.13 | ||||||||||
1973 | 37.00 | a | 45.74 | a | 53.74 | 61.27 | 73.06 | 76.90 | 87.74 | 85.10 | 77.21 | a | 60.73 | a | 41.70 | 41.58 | 61.81 | |||||||||
1974 | 32.37 | a | 46.04 | 50.48 | 58.77 | 64.45 | 81.30 | 82.65 | 84.65 | 79.53 | 66.74 | 47.23 | 40.87 | a | 61.26 | |||||||||||
1975 | 35.27 | a | 37.96 | a | 46.97 | 54.57 | 67.61 | 72.67 | 87.10 | 78.97 | 79.87 | 58.32 | 45.20 | 40.71 | 58.77 | |||||||||||
1976 | 40.47 | a | 42.83 | 47.23 | 58.70 | 70.55 | 72.33 | 84.97 | a | 80.13 | 81.23 | 65.29 | 48.20 | 40.52 | 61.04 | |||||||||||
1977 | 30.77 | 49.41 | a | 49.43 | a | 68.14 | a | 64.42 | 81.28 | a | 83.45 | 86.97 | a | 70.30 | c | 64.13 | 45.59 | a | 38.19 | 61.01 | ||||||
1978 | 38.65 | 44.96 | 56.10 | 60.10 | 65.61 | 78.83 | 83.87 | 80.10 | 72.69 | a | 66.23 | 40.53 | 30.58 | 59.85 | ||||||||||||
1979 | 22.97 | 38.86 | 54.26 | 59.33 | 70.00 | 78.83 | 86.29 | c | 85.97 | 81.10 | 65.19 | 42.20 | 43.90 | 60.74 | ||||||||||||
1980 | 31.39 | 44.41 | 48.93 | a | 65.21 | a | 68.27 | a | 72.23 | 84.65 | 80.39 | 75.40 | 66.03 | 47.07 | 43.42 | 60.62 | ||||||||||
1981 | 43.65 | 44.46 | 56.29 | 59.37 | 65.68 | 70.80 | 82.61 | 90.13 | 78.47 | 60.52 | 51.52 | a | 39.23 | 61.89 | ||||||||||||
1982 | 35.16 | 42.07 | 50.55 | 56.83 | 69.00 | 78.48 | c | 84.23 | e | 85.45 | 73.91 | h | 60.56 | d | 42.67 | f | 37.30 | d | 59.96 | b | ||||||
1983 | 44.00 | a | 49.12 | c | 54.35 | e | 59.38 | d | 71.13 | h | 73.48 | i | 78.38 | j | 87.33 | j | 71.55 | j | 63.81 | 47.90 | 28.29 | 49.55 | e | |||
1984 | 39.26 | 43.97 | 52.57 | a | 55.40 | j | 64.59 | n | 72.36 | p | 86.50 | o | 86.80 | f | 74.38 | n | 58.23 | a | 45.23 | 32.00 | 45.21 | f | ||||
1985 | 28.06 | 36.61 | 50.10 | 62.77 | 72.48 | 77.76 | a | 93.26 | 82.23 | a | 67.33 | 58.97 | 31.17 | 26.03 | 57.23 | |||||||||||
1986 | 41.29 | 43.19 | a | 56.03 | a | 59.17 | a | 70.47 | a | 83.04 | c | 80.42 | 90.23 | 68.70 | 66.90 | 47.83 | a | 38.42 | 62.14 | |||||||
1987 | 36.45 | 46.81 | a | 54.03 | 67.29 | b | 72.55 | 81.57 | 83.68 | 84.00 | 82.45 | a | 68.61 | 50.07 | a | 34.97 | 63.54 | |||||||||
1988 | 35.42 | 48.82 | a | 52.07 | b | 62.57 | 69.06 | 75.38 | a | 84.65 | 85.30 | a | 75.55 | a | 70.71 | 46.03 | 36.55 | 61.84 | ||||||||
1989 | 38.55 | 33.14 | 49.23 | 64.00 | 66.64 | c | 78.67 | 86.00 | 79.67 | a | 79.10 | a | 62.29 | 48.18 | b | 37.71 | 60.26 | |||||||||
1990 | 40.71 | 41.64 | 55.29 | 65.14 | a | 66.87 | a | 74.53 | 88.93 | b | 85.47 | a | 84.70 | 59.58 | 48.57 | 32.77 | a | 62.02 | ||||||||
1991 | 35.48 | 51.93 | a | 49.90 | 60.17 | a | 64.06 | 71.33 | 83.83 | a | 87.43 | a | 80.10 | 62.87 | 43.80 | 42.94 | 61.15 | |||||||||
1992 | 41.81 | 50.32 | a | 60.70 | a | 63.57 | 74.87 | 82.40 | 82.29 | 85.63 | a | 74.37 | 64.19 | 42.97 | 35.73 | a | 63.24 | |||||||||
1993 | 30.53 | a | 37.07 | a | 51.39 | 57.80 | 74.10 | 74.59 | a | 74.97 | a | 80.35 | 77.57 | 66.80 | a | 43.60 | 38.16 | 58.91 | ||||||||
1994 | 46.39 | 40.89 | 56.77 | 64.17 | 71.27 | a | 77.80 | 89.97 | 87.07 | a | 81.07 | a | 60.93 | a | 40.97 | 39.77 | 63.09 | |||||||||
1995 | 42.06 | 48.79 | 52.63 | a | 59.47 | 71.23 | 74.27 | 83.14 | c | 80.83 | a | 78.93 | 56.55 | 51.17 | a | 37.90 | 61.41 | |||||||||
1996 | 36.68 | 42.21 | a | 50.93 | b | 60.43 | 61.80 | a | 76.47 | 88.87 | a | 87.23 | 72.10 | 59.74 | 44.30 | 35.42 | 59.68 | |||||||||
1997 | 38.06 | 42.96 | 51.30 | a | 57.33 | 71.29 | 73.70 | 83.35 | 88.53 | a | 78.53 | 61.48 | 49.97 | 37.97 | 61.21 | |||||||||||
1998 | 42.06 | 49.07 | a | 53.00 | 61.57 | 68.97 | 76.27 | 90.86 | c | 90.16 | 82.41 | a | 63.42 | 48.63 | 36.97 | a | 63.62 | |||||||||
1999 | 41.61 | 44.50 | 52.52 | 59.83 | 65.66 | b | 73.43 | 82.87 | a | 88.03 | 76.50 | 63.23 | 54.57 | 39.00 | 61.81 | |||||||||||
2000 | 38.10 | 45.34 | 51.16 | 65.10 | 67.47 | a | 76.14 | a | 84.84 | 84.65 | 72.30 | 61.19 | 38.10 | 34.23 | 59.88 | |||||||||||
2001 | 37.19 | 40.86 | 54.06 | 58.31 | a | 71.87 | 73.10 | 84.32 | 89.39 | 80.66 | a | 60.52 | 51.73 | 37.81 | 61.65 | |||||||||||
2002 | 40.74 | 42.67 | a | 46.13 | a | 59.40 | 66.10 | 77.59 | a | 88.62 | b | 82.87 | a | 76.03 | 60.77 | 49.90 | 41.26 | 61.01 | ||||||||
2003 | 43.37 | a | 45.07 | 53.16 | 59.43 | 68.83 | g | 79.80 | 90.68 | 87.84 | 79.45 | a | 68.73 | a | 43.11 | b | 39.03 | a | 62.70 | a | ||||||
2004 | 35.18 | c | 43.38 | c | 58.24 | j | 64.00 | g | 66.43 | j | 77.38 | d | 88.09 | h | 86.83 | h | 71.39 | g | 62.95 | i | 45.67 | f | 41.42 | e | 49.34 | h |
2005 | 41.17 | h | 49.14 | g | 55.96 | f | 61.07 | c | 68.87 | h | 74.39 | g | 87.00 | g | 86.44 | f | 71.86 | h | 61.10 | k | 42.33 | f | 34.22 | d | 47.65 | j |
2006 | 44.92 | f | 43.71 | d | 49.96 | f | 60.62 | i | 70.52 | f | 77.77 | h | 90.55 | k | 86.19 | j | 77.54 | f | 61.00 | i | 47.54 | d | 38.24 | b | 43.16 | i |
2007 | 34.23 | i | 42.48 | e | 55.65 | k | 60.41 | h | 71.09 | h | 74.38 | f | 90.21 | g | 83.80 | k | 74.05 | j | 60.73 | i | 46.17 | f | 36.81 | d | 39.65 | j |
2008 | 35.38 | e | 43.65 | c | 47.92 | f | 54.87 | g | 69.26 | h | 76.19 | i | 85.86 | j | 84.27 | i | 76.27 | d | 63.29 | j | 50.33 | f | 33.46 | g | 51.77 | i |
2009 | 36.44 | d | 45.45 | h | 46.95 | j | 59.09 | h | 70.39 | h | 77.33 | i | 87.76 | f | 85.48 | j | 81.28 | l | 56.70 | h | 47.73 | h | 34.29 | g | 36.44 | k |
2010 | 45.77 | e | 48.67 | d | 55.58 | g | 59.39 | l | 63.00 | e | 72.14 | i | 84.92 | g | 83.40 | a | 74.30 | 63.68 | 44.63 | 40.68 | 58.02 | d | ||||
2011 | 41.19 | 40.86 | 50.94 | 53.43 | 63.67 | d | 70.37 | 82.00 | 87.82 | c | 82.43 | 60.87 | 47.70 | 41.10 | 60.20 | |||||||||||
2012 | 43.74 | 46.31 | 50.61 | 61.87 | 67.55 | 72.87 | 87.38 | b | 88.74 | 80.13 | 61.35 | 48.73 | 38.68 | 62.33 | ||||||||||||
2013 | 32.52 | 44.50 | 53.45 | 58.87 | 70.42 | 75.23 | 89.29 | 86.10 | a | 77.10 | 60.52 | 45.80 | 36.03 | 60.82 | ||||||||||||
2014 | 38.58 | 35.64 | 52.61 | 60.70 | 71.42 | 75.10 | 91.32 | 87.87 | 79.30 | 68.00 | 46.83 | 41.39 | 62.40 | |||||||||||||
2015 | 41.03 | 50.71 | 59.26 | 62.13 | 73.65 | 82.47 | m | 88.10 | 87.29 | 73.73 | 68.94 | 44.53 | 38.00 | 62.49 | a | |||||||||||
2016 | 39.29 | 50.48 | 53.10 | ----- | z | 71.39 | 79.50 | 83.52 | 86.87 | 74.33 | 58.38 | e | 52.30 | 31.03 | 61.84 | a | ||||||||||
2017 | 29.40 | f | 38.93 | 48.71 | 55.43 | 67.30 | a | 75.37 | 88.71 | 88.00 | a | 74.00 | 57.06 | 45.57 | 32.00 | 61.01 | a | |||||||||
2018 | 42.06 | 38.25 | 48.81 | 52.78 | g | 71.58 | 72.70 | 86.96 | c | 83.90 | 71.17 | 59.48 | 45.23 | 37.90 | 59.82 | a | ||||||||||
2019 | 38.52 | 28.86 | 42.81 | 56.97 | 69.06 | 75.00 | 81.16 | 83.81 | 69.40 | 52.03 | 44.73 | ----- | z | 58.39 | a | |||||||||||
2020 | ----- | z | 43.14 | 47.81 | 57.70 | 65.03 | 70.87 | ----- | z | ----- | z | 77.14 | a | 58.48 | ----- | z | ----- | z | 60.02 | e | ||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 37.87 | 43.68 | 51.67 | 59.95 | 68.92 | 76.15 | 85.55 | 85.33 | 76.47 | 62.48 | 46.36 | 37.38 | 61.07 | |||||||||||||
S.D. | 4.69 | 4.58 | 3.46 | 3.39 | 3.21 | 3.36 | 3.38 | 3.42 | 4.51 | 3.82 | 3.95 | 3.69 | 1.37 | |||||||||||||
SKEW | -0.80 | -0.72 | 0.13 | 0.22 | -0.23 | 0.23 | -0.22 | -0.30 | -0.18 | 0.04 | -1.09 | -0.76 | -0.39 | |||||||||||||
MAX | 46.39 | 51.93 | 60.70 | 68.14 | 74.87 | 83.04 | 93.26 | 91.84 | 84.70 | 70.71 | 54.57 | 43.90 | 63.62 | |||||||||||||
MIN | 22.97 | 28.86 | 42.81 | 53.43 | 61.80 | 70.37 | 74.97 | 78.60 | 67.33 | 52.03 | 31.17 | 26.03 | 57.23 | |||||||||||||
YRS | 52 | 55 | 50 | 48 | 48 | 48 | 47 | 49 | 50 | 51 | 51 | 54 | 39 |