YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1963 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 83.29 | n | 77.15 | 69.88 | a | 55.67 | 39.03 | 60.43 | h | |||
1964 | 42.85 | 42.71 | a | 55.19 | 66.63 | c | 75.67 | a | 79.52 | 83.25 | a | 82.63 | 73.37 | 62.28 | a | 55.03 | a | 45.45 | 63.72 | |||||||
1965 | 47.71 | 42.23 | 48.08 | 67.67 | 71.85 | 77.17 | 81.24 | 79.03 | 75.47 | 63.32 | 59.43 | 49.33 | a | 63.55 | ||||||||||||
1966 | 39.33 | b | 41.57 | 57.00 | 62.63 | 71.32 | a | 77.50 | 83.53 | 77.71 | 72.70 | 60.79 | 57.53 | 43.37 | 62.08 | |||||||||||
1967 | 44.11 | 46.66 | 62.37 | a | 70.03 | 72.52 | a | 79.82 | 79.65 | 76.25 | a | 68.07 | 62.31 | b | 53.40 | 41.23 | 63.03 | |||||||||
1968 | 44.06 | 44.59 | 51.77 | 62.28 | 72.68 | 78.02 | a | 78.15 | a | 79.69 | 70.42 | 65.65 | a | 51.36 | b | 43.45 | 61.84 | |||||||||
1969 | 46.85 | a | 47.84 | 48.18 | a | 65.70 | 69.27 | ----- | z | ----- | z | 80.48 | a | 71.72 | 61.72 | a | 51.75 | b | 47.97 | 59.15 | b | |||||
1970 | 40.86 | b | 47.59 | 49.08 | a | 64.25 | 69.50 | 77.00 | 81.23 | 80.13 | 72.55 | a | 59.06 | 50.48 | 50.61 | 61.86 | ||||||||||
1971 | 47.65 | 48.25 | 56.31 | 63.02 | 71.69 | 78.53 | 80.40 | 74.42 | 70.52 | 62.95 | a | 53.27 | 47.72 | b | 62.89 | |||||||||||
1972 | 46.44 | 49.00 | 60.32 | 70.52 | 70.77 | 79.63 | 79.06 | 76.24 | 74.83 | 63.87 | 47.57 | 43.03 | 63.44 | |||||||||||||
1973 | 39.95 | a | 44.41 | a | 56.37 | 59.47 | 72.05 | 77.39 | b | 79.73 | 78.32 | 73.24 | a | 65.56 | 58.42 | 46.02 | a | 62.58 | ||||||||
1974 | 43.85 | 47.96 | 63.76 | 65.42 | 75.34 | 79.82 | 81.13 | a | 76.55 | 64.85 | 62.46 | c | 51.67 | 43.16 | b | 63.00 | ||||||||||
1975 | 44.18 | 45.86 | 53.79 | 62.17 | 70.82 | 79.15 | 76.45 | 78.31 | 69.02 | 62.52 | 52.62 | 44.02 | 61.57 | |||||||||||||
1976 | 41.53 | 54.18 | a | 56.90 | 65.20 | 68.37 | 78.87 | 75.26 | 77.89 | 71.90 | 56.58 | 45.77 | b | 42.46 | g | 62.95 | a | |||||||||
1977 | 38.26 | 48.64 | 55.05 | 62.17 | 73.05 | 79.43 | 81.84 | 83.58 | 80.00 | 65.95 | a | 54.80 | 49.06 | 64.32 | ||||||||||||
1978 | 38.34 | 40.89 | 55.19 | 69.97 | 73.77 | 77.88 | 83.40 | 78.95 | 72.80 | 63.06 | 57.24 | k | 43.15 | a | 63.40 | a | ||||||||||
1979 | 35.90 | b | 44.16 | 54.90 | a | 64.48 | 69.58 | a | 74.77 | 81.31 | 78.40 | 73.58 | 67.63 | 49.10 | 45.48 | b | 61.61 | |||||||||
1980 | 44.56 | 46.03 | 53.44 | 61.12 | 69.60 | 82.20 | 86.02 | 80.34 | 74.92 | 61.53 | 49.70 | 46.05 | b | 62.96 | ||||||||||||
1981 | 44.03 | a | 46.86 | g | 54.05 | j | 65.52 | c | 69.86 | c | 77.13 | 81.42 | 79.73 | 75.05 | 65.02 | e | 56.71 | a | 47.27 | a | 66.17 | b | ||||
1982 | 44.57 | c | 44.06 | b | 58.78 | d | 66.60 | f | 69.89 | c | 79.07 | b | 83.02 | b | 83.09 | d | 76.42 | d | 65.61 | c | 53.73 | f | 44.79 | e | 64.93 | b |
1983 | 43.42 | f | 48.62 | g | 55.04 | e | 62.90 | d | 73.13 | h | 76.42 | e | 82.07 | h | 82.39 | d | 76.23 | d | 66.52 | f | 55.60 | f | 36.79 | e | 64.96 | f |
1984 | 37.98 | g | 47.94 | d | 55.40 | f | 65.36 | e | 73.88 | e | 80.48 | d | 80.24 | f | 81.46 | d | 71.75 | f | 61.78 | d | 52.90 | e | ----- | z | 66.26 | e |
1985 | ----- | z | 51.57 | m | 57.19 | 66.22 | 72.97 | a | 76.28 | a | 78.78 | a | 82.13 | a | 74.35 | 64.58 | a | 56.72 | a | 41.60 | 67.08 | b | ||||
1986 | 45.83 | a | 52.32 | 58.18 | a | 69.25 | 72.52 | 76.12 | 80.31 | 79.33 | a | 75.50 | 61.03 | b | 51.65 | 43.31 | 63.78 | |||||||||
1987 | 43.24 | 47.02 | b | 49.58 | a | 59.41 | a | 68.93 | c | 74.21 | a | 78.82 | a | 80.73 | 73.05 | 65.39 | 52.29 | b | 45.50 | a | 61.51 | |||||
1988 | 39.50 | a | 46.04 | a | 54.70 | a | 63.95 | 69.89 | 77.20 | 78.47 | 79.57 | a | 74.05 | a | 64.58 | a | 56.22 | 44.97 | 62.43 | |||||||
1989 | 47.23 | c | 43.70 | 55.63 | 65.73 | b | 77.20 | a | 78.28 | 82.45 | a | 80.16 | c | 71.90 | a | 65.77 | 54.92 | 37.86 | c | 63.40 | ||||||
1990 | 46.90 | 51.43 | 53.98 | b | 64.02 | a | 70.85 | 84.00 | 78.20 | a | 77.52 | a | 73.93 | 61.59 | b | 55.29 | a | 43.88 | a | 63.47 | ||||||
1991 | 41.12 | a | 49.27 | 57.35 | 65.47 | 75.32 | f | 78.90 | 79.92 | 79.29 | 70.42 | e | 64.91 | b | 48.95 | 45.72 | b | 61.94 | a | |||||||
1992 | 42.67 | e | 50.90 | 57.69 | 63.62 | a | 69.04 | d | 78.40 | a | 80.33 | a | 77.36 | b | 76.14 | a | 66.69 | e | 50.37 | c | 46.00 | a | 63.27 | |||
1993 | 42.87 | 48.21 | 56.31 | b | 63.69 | c | 71.68 | a | 79.33 | a | 82.84 | 82.92 | a | 71.89 | b | 63.45 | 49.74 | c | 48.28 | a | 63.43 | |||||
1994 | 44.79 | b | 47.44 | b | 58.24 | 64.14 | a | 71.50 | 83.32 | 84.38 | a | 82.48 | 73.98 | 66.12 | a | 56.05 | a | 49.72 | b | 65.18 | ||||||
1995 | 46.31 | 53.00 | 55.55 | b | 63.95 | a | 72.60 | 72.67 | 79.27 | 77.28 | a | 69.50 | 61.76 | 50.42 | 41.73 | 62.00 | ||||||||||
1996 | 39.89 | 46.40 | 46.97 | 58.75 | 74.68 | 78.00 | 79.40 | b | 75.69 | 68.13 | 60.90 | 54.64 | a | 47.78 | a | 60.94 | ||||||||||
1997 | 40.71 | c | 45.34 | 57.57 | b | 58.07 | 69.85 | 76.97 | a | 83.35 | 82.29 | b | 77.30 | 65.69 | 52.37 | 43.37 | a | 62.74 | ||||||||
1998 | 49.45 | 50.45 | 54.87 | 64.38 | 80.27 | a | 84.68 | 86.97 | 80.66 | 78.91 | b | 68.21 | 57.38 | a | 46.42 | a | 66.89 | |||||||||
1999 | 50.74 | b | 55.04 | 57.82 | a | 65.97 | 74.39 | 78.93 | a | 80.56 | d | 84.30 | a | 76.73 | 65.05 | j | 59.23 | j | 47.39 | h | 69.39 | c | ||||
2000 | 49.17 | j | 56.80 | g | 62.22 | h | 67.83 | l | 82.11 | i | 77.89 | h | 85.15 | g | 83.67 | g | 77.81 | f | 65.24 | h | 49.18 | p | ----- | z | ----- | z |
2001 | ----- | z | 42.81 | j | 51.72 | o | 66.11 | k | 75.59 | i | 83.32 | p | 85.90 | j | 82.69 | j | 75.41 | s | 66.21 | j | 58.58 | j | 48.18 | l | ----- | z |
2002 | 48.41 | i | ----- | z | ----- | z | 69.80 | h | 76.02 | j | ----- | z | ----- | z | 84.50 | m | 74.66 | k | ----- | z | 49.25 | p | ----- | z | ----- | z |
2003 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2004 | ----- | z | ----- | z | ----- | z | ----- | z | 79.17 | v | 79.65 | c | 81.47 | p | 78.13 | h | 73.02 | g | 66.55 | c | 53.31 | c | 45.24 | d | 61.19 | h |
2005 | 51.27 | p | 50.76 | i | 54.66 | 64.58 | 70.96 | d | 76.78 | g | 80.78 | a | 79.70 | c | 78.50 | d | 65.05 | c | 57.04 | b | 45.42 | e | 66.30 | c | ||
2006 | 51.39 | d | 48.05 | h | 60.03 | a | 69.39 | c | 77.10 | b | 80.72 | a | 82.12 | b | 82.34 | 72.81 | c | 66.04 | h | 56.92 | f | 45.12 | c | 69.00 | c | |
2007 | 37.57 | a | 46.82 | f | 56.85 | k | 59.57 | i | 69.13 | p | 75.47 | o | 76.61 | l | 77.43 | h | 76.29 | i | 63.40 | u | 54.67 | l | 44.48 | k | 37.57 | k |
2008 | 43.39 | i | 51.81 | u | 56.18 | n | 65.86 | h | 74.74 | j | 82.95 | k | 77.41 | t | 79.68 | l | 71.12 | q | 63.36 | m | 53.80 | 44.75 | i | 53.80 | k | |
2009 | 45.69 | b | 53.46 | e | 55.16 | o | 62.77 | q | 73.50 | s | 81.45 | j | 81.61 | c | 82.60 | a | 72.72 | 63.95 | c | 54.57 | i | 42.09 | b | 63.16 | e | |
2010 | 45.06 | f | 44.00 | 54.40 | 63.37 | 73.27 | 83.00 | 78.26 | 83.13 | a | 76.90 | 67.78 | a | 54.93 | 47.89 | 66.09 | a | |||||||||
2011 | 43.90 | 47.77 | 61.81 | 71.02 | 74.24 | 84.45 | h | 84.71 | 85.63 | 76.98 | 66.00 | 54.43 | 43.24 | 64.52 | a | |||||||||||
2012 | 46.98 | 48.79 | 60.10 | 69.87 | 73.65 | 82.00 | 81.24 | 81.50 | 74.77 | 62.48 | 58.35 | 49.58 | a | 65.78 | ||||||||||||
2013 | 46.18 | 49.09 | 56.63 | a | 63.87 | 71.68 | 79.93 | 78.61 | 81.27 | 75.20 | 65.53 | 50.18 | 45.03 | 63.60 | ||||||||||||
2014 | 45.00 | 48.27 | 56.15 | a | 66.53 | 72.79 | 78.03 | 79.71 | 80.61 | 74.40 | 69.42 | a | 51.55 | 52.18 | a | 64.55 | ||||||||||
2015 | 43.53 | 47.07 | 48.37 | p | 67.97 | 70.14 | b | 76.07 | 81.19 | 83.10 | 77.62 | a | 67.67 | a | 55.95 | 50.18 | a | 65.50 | a | |||||||
2016 | 46.48 | 54.24 | 60.47 | 66.00 | 69.95 | a | 77.03 | 83.60 | 82.74 | n | 76.02 | h | 69.92 | 59.37 | 50.03 | 63.71 | b | |||||||||
2017 | 50.23 | 58.04 | 65.50 | 68.28 | 73.08 | 80.83 | 81.39 | 78.53 | 77.88 | a | 66.00 | b | 61.12 | 47.56 | 67.37 | |||||||||||
2018 | 45.11 | 51.89 | 61.81 | 65.60 | 78.19 | 84.08 | 83.73 | 81.68 | 73.55 | 63.84 | 52.90 | 46.23 | 65.72 | |||||||||||||
2019 | 46.77 | 52.41 | 55.56 | 65.95 | 70.08 | 78.15 | 81.27 | 85.23 | 80.10 | a | 66.58 | 50.53 | 50.10 | 65.23 | ||||||||||||
2020 | 48.85 | 46.41 | 61.53 | 64.82 | 74.73 | 79.57 | 84.87 | 84.21 | 71.80 | 65.80 | a | 59.18 | 47.35 | 65.76 | ||||||||||||
2021 | 43.79 | 54.33 | v | 56.89 | 61.17 | a | 69.42 | m | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 53.95 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 44.21 | 48.06 | 56.36 | 64.93 | 72.29 | 78.85 | 81.13 | 80.34 | 73.96 | 64.42 | 53.76 | 45.52 | 63.50 | |||||||||||||
S.D. | 3.55 | 3.81 | 3.98 | 3.04 | 2.61 | 2.53 | 2.40 | 2.60 | 3.18 | 2.74 | 3.43 | 3.29 | 1.59 | |||||||||||||
SKEW | -0.22 | 0.40 | -0.24 | -0.03 | 0.91 | 0.28 | 0.11 | -0.10 | -0.38 | -0.25 | 0.01 | -0.39 | 0.68 | |||||||||||||
MAX | 51.39 | 58.04 | 65.50 | 71.02 | 80.27 | 84.68 | 86.97 | 85.63 | 80.10 | 69.92 | 61.12 | 52.18 | 67.37 | |||||||||||||
MIN | 35.90 | 40.89 | 46.97 | 58.07 | 68.37 | 72.67 | 75.26 | 74.42 | 64.85 | 56.58 | 45.77 | 36.79 | 60.94 | |||||||||||||
YRS | 47 | 45 | 47 | 49 | 47 | 47 | 47 | 49 | 49 | 49 | 47 | 49 | 33 |