YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1983 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 45.14 | p | 50.45 | 52.52 | 43.77 | 35.25 | c | 21.15 | d | 9.00 | b | 35.36 | f | |||
1984 | 8.16 | 14.32 | d | 20.70 | a | 24.31 | a | 39.16 | 46.63 | 50.90 | 52.55 | 43.79 | b | 30.60 | a | 21.83 | a | 20.63 | d | 31.13 | ||||||
1985 | 14.92 | e | 14.87 | e | 24.41 | b | 31.19 | c | 39.00 | 46.93 | 49.29 | 49.26 | 41.33 | c | 34.84 | 24.34 | a | 13.63 | a | 32.00 | ||||||
1986 | 14.39 | 20.00 | a | 23.81 | 33.83 | 39.97 | 48.30 | 50.52 | 50.97 | 42.90 | 29.94 | 19.52 | a | 13.52 | 32.30 | |||||||||||
1987 | 8.97 | a | 17.42 | b | 21.52 | 26.14 | a | 38.97 | 45.47 | 48.30 | a | 51.60 | a | 42.07 | 31.42 | 18.30 | 4.65 | 29.57 | ||||||||
1988 | 9.34 | b | 17.83 | 17.97 | 29.53 | 34.81 | 47.52 | c | 49.97 | 52.48 | 39.60 | 30.50 | a | 21.00 | 8.13 | 29.89 | ||||||||||
1989 | 8.27 | a | 11.82 | 21.39 | 28.87 | 37.00 | 47.90 | 50.00 | 47.23 | 44.17 | 27.84 | 17.90 | a | 10.13 | 29.37 | |||||||||||
1990 | 8.77 | a | 15.32 | 23.13 | 34.13 | 36.81 | 48.90 | 50.58 | 44.48 | 44.93 | 26.77 | 20.93 | 5.28 | b | 30.00 | |||||||||||
1991 | 9.94 | 14.86 | 19.65 | 25.70 | 35.65 | 45.14 | a | 51.26 | 51.67 | a | 43.33 | 28.13 | 21.90 | 13.42 | 30.05 | |||||||||||
1992 | 11.80 | a | 17.79 | 22.26 | 31.00 | 38.65 | 43.87 | 51.26 | 48.15 | e | 40.97 | 29.39 | 15.00 | a | 11.40 | a | 30.13 | |||||||||
1993 | 17.33 | a | 19.81 | a | 21.39 | 28.93 | 35.55 | 43.14 | a | 51.13 | 51.48 | 37.00 | 25.97 | 13.37 | 8.64 | c | 29.48 | |||||||||
1994 | 6.82 | c | 8.07 | 13.97 | 27.33 | 36.77 | 44.83 | 45.93 | a | 49.10 | a | 40.04 | b | 27.11 | c | 21.32 | b | 12.07 | b | 27.78 | ||||||
1995 | 10.57 | c | 17.71 | 13.20 | a | 22.24 | a | 32.10 | 40.04 | b | 42.35 | 48.23 | 41.72 | a | 23.84 | 17.79 | a | 11.04 | c | 26.74 | ||||||
1996 | 8.90 | b | 14.60 | n | 13.73 | a | 22.53 | 33.03 | a | 45.89 | b | 52.47 | a | 48.13 | a | 41.68 | b | 27.61 | c | 16.93 | c | 10.39 | c | 29.21 | a | |
1997 | 3.00 | c | 14.74 | a | 17.66 | b | 25.17 | 36.87 | a | 44.20 | 48.36 | c | 50.30 | a | 45.07 | c | 28.70 | a | 15.40 | e | 6.52 | b | 28.00 | |||
1998 | 12.33 | a | 14.48 | a | 21.29 | 24.60 | 33.87 | 41.41 | a | 53.43 | a | 49.38 | b | 42.31 | a | 32.03 | 23.32 | b | 13.46 | c | 30.16 | |||||
1999 | 16.29 | c | 13.32 | 23.21 | b | 26.60 | 34.00 | c | 43.15 | d | 49.66 | b | 49.35 | 38.80 | 22.17 | a | 14.14 | b | 8.08 | e | 28.23 | |||||
2000 | 13.06 | 16.54 | c | 23.69 | b | 28.77 | 35.10 | a | 46.15 | c | 49.45 | b | 48.14 | b | 38.97 | 31.56 | f | 9.41 | c | 11.70 | a | 29.18 | a | |||
2001 | -0.60 | a | 15.62 | b | 23.90 | 27.97 | a | 35.16 | 42.30 | 51.52 | 48.74 | 38.23 | 26.00 | f | 22.77 | d | 9.65 | 28.66 | a | |||||||
2002 | 9.55 | b | 9.59 | a | 12.57 | c | 29.34 | a | 31.10 | a | 44.62 | a | 50.40 | a | 46.80 | a | 40.97 | a | 29.64 | c | 19.68 | b | 8.33 | a | 27.72 | |
2003 | 11.93 | a | 21.70 | e | 19.77 | a | 21.79 | b | 35.00 | a | 40.14 | a | 50.77 | a | 49.52 | 41.43 | b | 29.80 | a | 19.00 | 9.26 | 29.17 | ||||
2004 | 7.34 | b | 6.84 | d | 24.79 | b | 30.62 | a | 36.23 | 44.82 | b | 49.61 | 48.67 | a | 41.17 | 32.28 | b | 21.18 | b | 11.24 | b | 29.57 | ||||
2005 | 21.10 | a | 22.36 | 21.25 | c | 28.76 | a | 36.94 | 42.10 | a | 48.50 | a | 48.73 | e | 40.97 | a | 29.75 | c | 18.20 | 8.00 | c | 30.55 | ||||
2006 | 9.83 | b | 9.65 | b | 18.19 | 26.70 | 38.52 | 45.67 | 51.03 | 52.93 | a | 38.67 | 28.40 | a | 18.86 | a | 10.52 | 29.08 | ||||||||
2007 | 3.00 | d | 14.00 | 20.71 | c | 26.40 | 38.07 | a | 43.63 | 51.48 | b | 51.60 | f | 42.77 | d | 28.17 | b | 18.59 | a | 16.12 | g | 28.68 | b | |||
2008 | 11.73 | a | 16.72 | 18.45 | b | 27.07 | a | 36.53 | a | 44.12 | d | 52.43 | h | 50.45 | b | 39.70 | 28.30 | a | 17.10 | a | 16.03 | b | 27.84 | a | ||
2009 | 11.18 | c | 15.86 | f | 20.06 | 27.13 | 39.42 | 45.03 | a | 50.93 | b | 47.63 | a | 39.77 | 26.97 | a | 17.34 | a | 10.77 | a | 30.57 | a | ||||
2010 | 15.47 | a | 13.44 | a | 21.07 | a | 30.88 | f | 34.03 | 44.54 | b | 53.00 | a | 49.58 | ----- | z | 31.00 | 17.79 | a | 15.63 | a | 29.56 | b | |||
2011 | 9.33 | a | 2.48 | g | 21.65 | ----- | z | 35.03 | b | 41.23 | d | ----- | z | 51.96 | d | 41.85 | j | 29.00 | j | 19.71 | b | ----- | z | 29.82 | f | |
2012 | ----- | z | 10.64 | d | ----- | z | ----- | z | 37.24 | f | 46.85 | d | ----- | z | ----- | z | ----- | z | 26.44 | d | ----- | z | ----- | z | 27.98 | i |
2013 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 51.75 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 51.75 | k |
2014 | 11.41 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 11.41 | k |
2015 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 41.29 | f | 48.86 | b | 45.08 | f | 42.57 | g | ----- | z | ----- | z | ----- | z | 48.86 | 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 | 17.48 | 25.94 | l | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 17.48 | k | |
2019 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 50.35 | e | 50.17 | a | 45.97 | a | 30.06 | 22.47 | 19.23 | a | 36.37 | f | ||
2020 | 20.39 | 21.55 | 31.26 | 35.10 | 43.47 | a | 49.67 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 33.57 | f | |||||
2021 | ----- | z | ----- | z | ----- | z | ----- | z | 37.82 | t | 45.70 | 51.06 | 48.61 | 42.03 | 27.94 | 17.58 | d | 12.52 | 35.06 | e | ||||||
2022 | 6.87 | 4.96 | 14.48 | 24.43 | b | 35.71 | x | 49.20 | 54.00 | x | 49.68 | 41.63 | 31.34 | b | 15.07 | a | 10.43 | c | 24.81 | b | ||||||
2023 | 8.87 | 10.25 | 19.32 | 23.39 | b | 41.10 | 47.24 | i | 53.10 | b | 49.59 | b | 41.85 | c | 32.15 | d | 23.20 | t | ----- | z | 31.07 | c | ||||
2024 | ----- | z | ----- | z | ----- | z | 24.50 | h | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 10.84 | 14.70 | 20.34 | 27.57 | 36.60 | 44.97 | 50.24 | 49.63 | 41.54 | 29.17 | 18.72 | 11.11 | 29.55 | |||||||||||||
S.D. | 4.71 | 4.45 | 3.97 | 3.46 | 2.72 | 2.52 | 2.11 | 1.91 | 2.13 | 2.80 | 3.22 | 3.61 | 1.40 | |||||||||||||
SKEW | 0.06 | -0.26 | 0.01 | 0.37 | 0.28 | -0.10 | -1.73 | -0.23 | 0.03 | -0.11 | -0.67 | 0.72 | 0.03 | |||||||||||||
MAX | 21.10 | 22.36 | 31.26 | 35.10 | 43.47 | 49.67 | 53.43 | 52.93 | 45.97 | 35.25 | 24.34 | 20.63 | 32.30 | |||||||||||||
MIN | -0.60 | 4.96 | 12.57 | 21.79 | 31.10 | 40.04 | 42.35 | 44.48 | 37.00 | 22.17 | 9.41 | 4.65 | 26.74 | |||||||||||||
YRS | 33 | 29 | 31 | 29 | 30 | 32 | 32 | 32 | 31 | 31 | 32 | 30 | 20 |