YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1963 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 69.94 | n | 64.20 | 56.20 | a | 42.43 | 27.77 | 47.65 | h | |||
1964 | 27.35 | 28.69 | 40.45 | 52.41 | c | 63.17 | a | 66.97 | 69.83 | a | 70.23 | 63.23 | 49.13 | a | 42.86 | a | 31.55 | 50.49 | ||||||||
1965 | 35.48 | 30.25 | 34.55 | 53.77 | 60.58 | 66.17 | 67.77 | 66.00 | 62.93 | 48.71 | 45.60 | 38.39 | 50.85 | |||||||||||||
1966 | 26.97 | a | 29.04 | 43.77 | 50.40 | 58.97 | 65.43 | 70.13 | 64.26 | 60.33 | 45.87 | 43.43 | 27.29 | 48.82 | ||||||||||||
1967 | 27.77 | 31.61 | 47.27 | a | 57.50 | 56.63 | a | 67.13 | 66.16 | 61.10 | a | 55.37 | 44.83 | b | 41.33 | 28.90 | 48.80 | |||||||||
1968 | 34.35 | 32.00 | 41.19 | 50.00 | 60.03 | 64.55 | a | 66.00 | a | 66.55 | 56.23 | 51.00 | a | 38.04 | b | 28.42 | 49.03 | |||||||||
1969 | 32.73 | a | 34.21 | 35.20 | a | 52.87 | 55.94 | 63.73 | 67.97 | 63.90 | a | 55.90 | 50.10 | a | 37.86 | b | 34.61 | 48.75 | ||||||||
1970 | 27.59 | b | 33.71 | 35.27 | a | 50.13 | 54.32 | 62.47 | 65.84 | 63.61 | 58.97 | a | 44.58 | 32.40 | 34.94 | 46.99 | ||||||||||
1971 | 30.26 | 31.00 | 38.45 | 48.67 | 55.68 | 64.80 | 64.48 | 60.77 | 56.17 | 49.47 | a | 38.50 | 34.72 | b | 47.75 | |||||||||||
1972 | 29.87 | 31.79 | 43.58 | 54.23 | 57.42 | 64.93 | 65.77 | 63.23 | 61.30 | 49.94 | 34.10 | 26.65 | 48.57 | |||||||||||||
1973 | 26.29 | 31.63 | a | 41.94 | 45.40 | 55.90 | 62.11 | b | 65.65 | 62.52 | 60.66 | a | 51.87 | 44.70 | 27.60 | a | 48.02 | |||||||||
1974 | 28.19 | 28.68 | 47.97 | 48.97 | 61.00 | 63.30 | 65.43 | a | 62.87 | 52.37 | 49.28 | b | 38.40 | 29.47 | a | 47.99 | ||||||||||
1975 | 29.00 | 30.04 | 37.19 | 46.17 | 55.32 | 64.13 | 62.84 | 63.97 | 54.30 | 47.00 | 36.03 | 27.84 | 46.15 | |||||||||||||
1976 | 23.52 | 36.68 | a | 41.06 | 51.73 | 54.65 | 64.80 | 64.90 | 63.45 | 60.50 | 42.71 | 33.17 | a | 26.45 | b | 46.97 | ||||||||||
1977 | 24.03 | 33.61 | 39.19 | 49.33 | 61.26 | 65.10 | 67.19 | 69.13 | 64.70 | 51.53 | a | 38.90 | 32.29 | 49.69 | ||||||||||||
1978 | 23.39 | 26.96 | 39.29 | 54.20 | 58.77 | 64.70 | 68.16 | 65.39 | 63.03 | 49.87 | 45.63 | k | 28.13 | a | 49.26 | a | ||||||||||
1979 | 23.69 | b | 28.21 | 41.67 | a | 49.20 | 55.23 | a | 61.83 | 67.39 | 63.81 | 56.93 | 48.71 | 32.93 | 30.03 | b | 46.64 | |||||||||
1980 | 29.52 | 31.03 | 37.74 | 44.47 | 55.77 | 69.17 | 71.26 | 67.10 | 62.47 | 46.58 | 35.97 | 32.83 | a | 48.66 | ||||||||||||
1981 | 31.87 | a | 33.67 | g | 41.52 | j | 54.26 | c | 57.45 | b | 65.27 | 67.81 | 66.13 | 60.23 | 53.67 | d | 40.76 | a | 30.90 | a | 52.83 | b | ||||
1982 | 28.07 | c | 29.65 | b | 44.89 | d | 52.17 | f | 57.11 | c | 65.43 | b | 69.62 | b | 69.33 | d | 61.69 | d | 51.29 | c | 40.58 | f | 32.04 | e | 50.91 | b |
1983 | 29.04 | f | 33.19 | g | 40.31 | e | 46.73 | d | 57.62 | g | 62.88 | e | 68.61 | h | 67.26 | d | 61.54 | d | 53.64 | f | 41.84 | e | 23.19 | e | 49.11 | e |
1984 | 25.62 | g | 31.28 | d | 40.23 | e | 49.04 | e | 59.77 | e | 67.73 | d | 65.96 | f | 67.07 | d | 57.17 | f | 51.04 | d | 40.08 | e | ----- | z | 50.78 | d |
1985 | ----- | z | 39.20 | m | 45.87 | 53.23 | 59.13 | a | 64.83 | a | 66.60 | a | 69.63 | a | 63.37 | 55.03 | a | 44.07 | a | 26.77 | 54.85 | b | ||||
1986 | 31.35 | 38.43 | 43.80 | a | 56.30 | 59.77 | 66.17 | 68.52 | 68.50 | a | 66.17 | 51.21 | b | 38.67 | 33.87 | 51.90 | ||||||||||
1987 | 30.42 | 36.54 | b | 37.17 | a | 45.72 | a | 56.39 | c | 63.52 | a | 67.43 | a | 68.35 | 59.77 | 52.13 | 37.68 | b | 30.93 | a | 48.84 | |||||
1988 | 26.77 | a | 31.25 | a | 38.40 | a | 47.33 | 56.06 | 64.00 | 67.32 | 67.07 | a | 61.00 | a | 50.40 | a | 40.20 | 30.19 | 48.33 | |||||||
1989 | 33.54 | c | 30.54 | 40.29 | 51.00 | b | 63.10 | a | 65.43 | 69.27 | a | 68.11 | c | 57.14 | a | 50.87 | 41.20 | 25.18 | c | 49.64 | ||||||
1990 | 31.77 | 36.29 | 42.76 | b | 51.37 | 58.00 | 71.83 | 67.70 | a | 65.70 | a | 62.63 | 47.28 | b | 43.76 | a | 30.07 | a | 50.76 | |||||||
1991 | 29.60 | a | 33.68 | 42.26 | 49.77 | 62.48 | f | 66.23 | 67.87 | 66.81 | 59.88 | e | 50.38 | b | 36.37 | 35.14 | b | 48.91 | a | |||||||
1992 | 30.77 | e | 38.86 | 43.65 | 51.28 | a | 56.71 | c | 65.48 | a | 68.90 | a | 64.79 | b | 62.52 | a | 50.69 | e | 36.48 | c | 33.83 | a | 50.33 | |||
1993 | 30.58 | 34.39 | 41.97 | b | 48.00 | c | 56.37 | a | 68.00 | a | 71.71 | 69.57 | a | 59.36 | b | 49.13 | 35.74 | c | 36.00 | a | 50.07 | |||||
1994 | 32.00 | b | 33.85 | b | 44.39 | 47.72 | a | 59.06 | 69.37 | 70.63 | a | 68.94 | 60.03 | 53.33 | a | 42.90 | a | 38.14 | b | 51.70 | ||||||
1995 | 33.84 | 38.57 | 42.07 | a | 49.07 | a | 59.74 | 60.13 | 65.16 | 65.37 | a | 57.37 | 46.29 | 37.10 | 28.19 | 48.57 | ||||||||||
1996 | 23.97 | 31.28 | 31.90 | 43.63 | 60.87 | 64.47 | 67.03 | b | 64.58 | 57.20 | 46.97 | 41.60 | 33.43 | a | 47.24 | |||||||||||
1997 | 28.75 | c | 34.89 | 43.69 | b | 45.20 | 56.94 | 64.86 | a | 70.19 | 69.07 | a | 64.17 | 51.84 | 38.53 | 30.27 | a | 49.87 | ||||||||
1998 | 34.03 | 35.79 | 40.19 | 47.63 | 64.43 | a | 70.27 | 73.90 | 69.29 | 65.79 | b | 57.77 | 46.31 | a | 34.27 | a | 53.31 | |||||||||
1999 | 35.27 | a | 40.04 | 44.77 | 51.37 | 61.74 | 68.48 | a | 69.70 | d | 70.57 | a | 63.07 | 49.10 | j | 42.60 | j | 31.39 | h | 56.11 | c | |||||
2000 | 33.14 | i | 41.59 | g | 47.39 | h | 52.11 | l | 66.50 | i | 68.91 | h | 72.00 | g | 70.42 | g | 61.54 | f | 55.70 | h | 35.31 | n | ----- | z | ----- | z |
2001 | ----- | z | 31.89 | j | 37.39 | m | 52.21 | k | 61.36 | i | 68.93 | p | 73.00 | j | 70.24 | j | 61.73 | s | 51.33 | j | 46.10 | i | 35.16 | l | ----- | z |
2002 | 34.32 | i | ----- | z | ----- | z | 55.91 | h | 61.67 | j | ----- | z | ----- | z | 71.06 | m | 60.42 | k | ----- | z | 38.14 | p | ----- | z | ----- | z |
2003 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2004 | ----- | z | ----- | z | ----- | z | ----- | z | 66.33 | v | 67.00 | c | 68.33 | p | 66.00 | h | 62.52 | g | 56.04 | c | 42.67 | c | 32.07 | d | 49.44 | h |
2005 | 38.20 | p | 39.74 | i | 40.55 | 49.93 | 59.44 | d | 63.61 | g | 67.60 | a | 67.18 | c | 64.04 | d | 53.04 | c | 41.71 | b | 30.37 | d | 52.65 | c | ||
2006 | 34.07 | d | 33.20 | h | 45.93 | a | 54.78 | c | 62.48 | b | 66.93 | a | 69.83 | b | 70.55 | 60.63 | c | 52.91 | h | 42.75 | f | 31.18 | c | 55.15 | c | |
2007 | 28.33 | a | 32.55 | f | 42.30 | k | 45.90 | i | 59.60 | p | 63.27 | o | 65.32 | l | 65.52 | h | 64.38 | i | 45.70 | u | 39.89 | l | 30.10 | k | 28.33 | k |
2008 | 29.82 | i | 33.25 | u | 40.59 | n | 48.68 | h | 59.62 | j | 68.89 | k | 65.73 | t | 66.68 | l | 60.46 | q | 49.42 | l | 37.47 | 27.73 | i | 37.47 | k | |
2009 | 27.66 | b | 36.52 | e | 43.44 | o | 45.23 | q | 58.75 | s | 68.95 | j | 69.57 | c | 69.43 | a | 60.40 | 51.00 | c | 38.95 | i | 30.28 | b | 49.27 | e | |
2010 | 32.08 | f | 32.21 | 40.71 | 51.30 | 60.74 | 70.53 | 69.29 | 70.33 | a | 63.73 | 53.67 | a | 39.03 | 32.23 | 53.07 | a | |||||||||
2011 | 29.65 | 32.43 | 45.48 | 54.43 | 59.48 | 71.32 | h | 72.87 | 72.94 | 61.67 | 52.26 | 39.17 | 33.71 | 50.37 | a | |||||||||||
2012 | 31.90 | 36.00 | 47.00 | 55.13 | 62.32 | 69.73 | 68.97 | 68.71 | 63.17 | 50.61 | 43.23 | 34.84 | 52.64 | |||||||||||||
2013 | 34.16 | 34.25 | 40.81 | 47.33 | 57.71 | 68.10 | 67.55 | 68.52 | 63.30 | 53.16 | 38.30 | 31.19 | 50.37 | |||||||||||||
2014 | 27.19 | 31.57 | 37.19 | 50.60 | 58.29 | 66.53 | 68.23 | 68.06 | 63.77 | 54.93 | a | 37.83 | 39.67 | a | 50.32 | |||||||||||
2015 | 30.52 | 33.71 | 35.00 | p | 54.73 | 57.79 | b | 65.60 | 69.48 | 69.84 | 65.07 | a | 54.97 | 44.63 | 36.27 | a | 52.97 | a | ||||||||
2016 | 32.35 | 38.34 | 45.97 | 52.30 | 57.00 | a | 66.00 | 71.84 | 71.00 | n | 63.50 | h | 55.84 | 48.10 | 36.13 | 50.39 | b | |||||||||
2017 | 35.68 | 42.93 | 51.71 | 53.83 | 59.06 | 67.47 | 69.55 | 67.42 | 65.07 | 51.65 | 47.20 | 34.45 | 53.83 | |||||||||||||
2018 | 30.90 | 36.46 | 47.13 | 48.10 | 65.00 | 71.43 | 71.55 | 70.26 | 64.87 | 55.26 | 39.10 | 34.45 | 52.88 | |||||||||||||
2019 | 34.74 | 39.11 | 42.97 | 51.57 | 59.68 | 65.73 | 69.10 | 72.23 | 68.59 | a | 51.94 | 36.17 | 36.42 | 52.35 | ||||||||||||
2020 | 37.06 | 34.28 | 51.00 | 52.60 | 62.06 | 67.90 | 72.94 | 71.77 | 59.67 | 52.06 | 46.47 | 34.00 | 53.48 | |||||||||||||
2021 | 32.94 | 39.83 | v | 43.61 | 49.62 | a | 57.72 | m | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 42.06 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 30.21 | 33.61 | 41.97 | 50.50 | 58.82 | 66.01 | 68.43 | 67.17 | 61.15 | 50.88 | 40.02 | 31.75 | 49.73 | |||||||||||||
S.D. | 3.53 | 3.55 | 4.09 | 3.25 | 2.65 | 2.51 | 2.35 | 2.92 | 3.39 | 3.26 | 3.85 | 3.64 | 2.06 | |||||||||||||
SKEW | -0.19 | 0.41 | 0.00 | -0.05 | 0.38 | 0.28 | 0.11 | -0.26 | -0.45 | -0.25 | 0.11 | -0.06 | 0.34 | |||||||||||||
MAX | 37.06 | 42.93 | 51.71 | 57.50 | 65.00 | 71.83 | 73.90 | 72.94 | 68.59 | 57.77 | 48.10 | 39.67 | 53.83 | |||||||||||||
MIN | 23.39 | 26.96 | 31.90 | 43.63 | 54.32 | 60.13 | 62.84 | 60.77 | 52.37 | 42.71 | 32.40 | 23.19 | 46.15 | |||||||||||||
YRS | 47 | 45 | 48 | 49 | 47 | 48 | 48 | 49 | 49 | 49 | 48 | 50 | 35 |