YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1983 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 64.64 | p | 68.10 | 68.44 | 62.52 | 51.21 | c | 38.42 | d | 25.43 | b | 52.35 | f | |||
1984 | 25.55 | 33.32 | d | 38.27 | a | 42.81 | a | 58.02 | 63.55 | 67.24 | 66.35 | 60.27 | b | 44.73 | a | 38.43 | a | 33.87 | d | 47.70 | ||||||
1985 | 28.04 | e | 30.26 | e | 38.86 | b | 48.89 | c | 55.53 | 63.18 | 67.32 | 66.65 | 57.26 | c | 49.89 | 40.79 | a | 31.43 | a | 48.18 | ||||||
1986 | 34.29 | 35.94 | b | 42.58 | 49.72 | 55.32 | 62.95 | 67.13 | 67.35 | a | 58.75 | 46.21 | 34.78 | a | 28.16 | 48.60 | ||||||||||
1987 | 26.12 | b | 32.48 | b | 37.32 | 44.64 | a | 54.44 | 62.87 | 66.47 | a | 66.00 | a | 58.75 | 50.90 | 36.83 | 24.68 | 46.79 | ||||||||
1988 | 25.53 | b | 36.24 | 37.47 | 46.74 | a | 52.23 | 62.11 | c | 66.62 | e | 66.05 | 56.52 | 50.48 | a | 39.33 | 26.70 | a | 47.17 | |||||||
1989 | 28.03 | a | 29.46 | 42.60 | 49.42 | 56.94 | 64.14 | a | 67.47 | 64.23 | 61.27 | 47.66 | 39.00 | a | 27.31 | 48.13 | ||||||||||
1990 | 27.33 | a | 31.91 | 39.60 | 49.83 | 53.47 | 68.45 | 66.58 | 59.32 | 60.78 | 47.98 | 40.84 | a | 24.98 | b | 47.59 | ||||||||||
1991 | 28.00 | 35.50 | 39.03 | 45.63 | 55.74 | 63.22 | a | 66.37 | 66.58 | a | 58.17 | 49.77 | 37.93 | 30.06 | 48.00 | |||||||||||
1992 | 29.07 | a | 35.09 | 40.44 | 49.72 | 55.29 | 61.85 | 67.72 | a | 65.13 | e | 59.67 | a | 50.40 | 33.59 | b | 29.37 | a | 48.11 | |||||||
1993 | 32.05 | a | 34.94 | a | 39.84 | 47.30 | 54.24 | 64.17 | a | 68.55 | a | 66.31 | 57.55 | 48.77 | a | 34.23 | 30.91 | c | 48.24 | |||||||
1994 | 30.70 | c | 30.61 | 37.53 | a | 47.75 | 55.55 | a | 66.63 | 67.05 | l | 67.00 | n | 60.09 | b | 47.21 | c | 40.70 | b | 34.62 | b | 45.14 | b | |||
1995 | 31.38 | c | 39.29 | 38.55 | a | 43.90 | a | 53.95 | 60.19 | c | 64.61 | 67.35 | 60.93 | a | 49.37 | 43.02 | a | 33.25 | c | 48.82 | ||||||
1996 | 32.10 | b | 36.96 | o | 38.03 | a | 47.50 | 58.03 | a | 66.30 | b | 68.70 | a | 66.05 | a | 58.18 | b | 49.76 | d | 39.92 | d | 32.91 | d | 50.68 | a | |
1997 | 23.04 | c | 33.17 | a | 41.00 | b | 43.48 | 55.98 | a | 62.45 | 67.25 | c | 67.42 | a | 61.67 | c | 47.95 | b | 36.12 | f | 24.31 | b | 47.97 | a | ||
1998 | 31.95 | a | 32.07 | a | 39.35 | 42.62 | 55.79 | 62.97 | a | 69.64 | b | 66.19 | b | 62.62 | a | 50.50 | 41.54 | b | 34.33 | d | 49.13 | |||||
1999 | 35.85 | e | 37.38 | 42.55 | c | 46.75 | 53.71 | c | 60.86 | e | 67.43 | b | 65.43 | a | 57.83 | a | 47.72 | b | 40.96 | b | 30.58 | e | 48.92 | |||
2000 | 35.32 | 38.60 | c | 42.77 | c | 50.62 | 58.81 | e | 64.91 | c | 68.52 | b | 68.50 | c | 61.63 | 50.38 | f | 29.94 | d | 32.45 | a | 50.19 | a | |||
2001 | 22.16 | b | 32.33 | b | 39.95 | a | 48.50 | a | 55.63 | a | 64.02 | 70.05 | 66.43 | a | 60.48 | 50.32 | f | 41.00 | d | 31.03 | 48.33 | a | ||||
2002 | 32.80 | d | 32.57 | a | 37.12 | c | 52.48 | a | 55.02 | a | 66.76 | a | 67.84 | b | 68.20 | a | 60.74 | c | 48.46 | c | 39.57 | c | 30.02 | a | 49.30 | |
2003 | 36.53 | b | 34.42 | h | 40.43 | a | 45.52 | b | 56.53 | b | 62.50 | a | 71.63 | a | 68.65 | 61.12 | b | 51.83 | a | 38.55 | 34.55 | a | 51.62 | a | ||
2004 | 29.48 | b | 27.30 | d | 44.40 | b | 45.59 | b | 56.82 | 64.83 | c | 67.08 | 64.29 | b | 58.97 | a | 48.86 | c | 37.11 | c | 33.00 | c | 48.14 | |||
2005 | 37.55 | a | 36.57 | 38.35 | e | 47.21 | a | 55.52 | 62.33 | a | 68.32 | a | 65.96 | f | 60.62 | b | 48.85 | d | 40.18 | 29.64 | c | 47.74 | a | |||
2006 | 32.10 | b | 33.52 | b | 38.52 | 50.93 | 59.23 | 67.02 | 69.19 | 66.70 | a | 55.80 | 48.67 | a | 41.14 | b | 29.10 | a | 49.33 | |||||||
2007 | 23.21 | g | 33.91 | a | 42.84 | c | 45.15 | 54.87 | a | 63.24 | a | 68.34 | b | 69.64 | f | 60.96 | f | 51.47 | b | 40.09 | a | 32.21 | g | 49.99 | d | |
2008 | 29.22 | b | 35.72 | 38.74 | b | 46.75 | b | 55.37 | a | 65.94 | d | 68.28 | h | 66.28 | b | 58.33 | 49.19 | b | 39.52 | a | 32.12 | b | 47.02 | a | ||
2009 | 33.73 | c | 36.50 | f | 40.61 | 46.57 | 58.58 | 63.74 | a | 68.91 | b | 66.25 | a | 58.20 | 46.18 | a | 39.89 | b | 26.50 | b | 49.92 | a | ||||
2010 | 31.45 | a | 28.24 | a | 37.33 | a | 49.08 | f | 54.19 | 66.20 | b | 69.02 | a | 67.52 | ----- | z | 50.16 | 38.22 | a | 34.72 | a | 47.70 | b | |||
2011 | 30.29 | c | 21.11 | i | 43.19 | ----- | z | 54.41 | b | 64.88 | d | ----- | z | 70.76 | d | 60.27 | j | 50.48 | j | 40.11 | b | ----- | z | 50.61 | f | |
2012 | ----- | z | 33.18 | d | ----- | z | ----- | z | 58.30 | f | 68.88 | d | ----- | z | ----- | z | ----- | z | 48.19 | e | ----- | z | ----- | z | 50.09 | i |
2013 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 67.95 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 67.95 | k |
2014 | 33.94 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 33.94 | k |
2015 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 62.50 | f | 67.21 | b | 66.86 | f | 63.43 | g | ----- | z | ----- | z | ----- | z | 67.21 | k |
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 | 37.35 | 43.50 | l | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 37.35 | k | |
2019 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 68.83 | e | 69.29 | g | 63.85 | d | 47.92 | 40.18 | 34.41 | b | 51.04 | g | ||
2020 | 34.79 | 36.81 | 45.82 | 51.52 | 61.73 | a | 68.17 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 49.81 | f | ||||
2021 | ----- | z | ----- | z | ----- | z | ----- | z | 58.23 | t | 65.12 | 67.15 | 65.63 | 61.92 | 47.34 | 41.52 | d | 34.44 | 54.73 | e | ||||||
2022 | 29.11 | 26.88 | 36.61 | 45.91 | b | 56.14 | x | 65.62 | 69.00 | x | 67.15 | 62.33 | 48.43 | b | 35.17 | a | 30.05 | c | 44.73 | b | ||||||
2023 | 29.65 | 29.23 | 37.32 | 43.84 | b | 57.06 | 63.05 | i | 71.55 | b | 68.84 | b | 62.17 | c | 52.00 | e | 42.69 | v | ----- | z | 50.19 | c | ||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 30.77 | 33.30 | 39.90 | 47.15 | 55.93 | 64.38 | 68.03 | 66.55 | 59.97 | 48.97 | 38.79 | 30.50 | 48.26 | |||||||||||||
S.D. | 3.95 | 3.29 | 2.40 | 2.67 | 1.99 | 2.17 | 1.46 | 1.97 | 2.02 | 1.73 | 2.80 | 3.29 | 0.73 | |||||||||||||
SKEW | -0.21 | -0.22 | 0.69 | 0.14 | 0.85 | 0.31 | 0.54 | -1.38 | -0.18 | -0.25 | -1.34 | -0.40 | -0.25 | |||||||||||||
MAX | 37.55 | 39.29 | 45.82 | 52.48 | 61.73 | 68.88 | 71.63 | 70.76 | 63.85 | 52.00 | 43.02 | 34.72 | 49.33 | |||||||||||||
MIN | 22.16 | 26.88 | 36.61 | 42.62 | 52.23 | 60.19 | 64.61 | 59.32 | 55.80 | 44.73 | 29.94 | 24.31 | 46.79 | |||||||||||||
YRS | 32 | 28 | 31 | 29 | 30 | 32 | 31 | 29 | 30 | 31 | 31 | 30 | 16 |