YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1988 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 51.43 | g | 52.61 | 51.00 | a | 39.50 | 33.13 | a | 24.00 | b | 11.27 | a | 35.25 | f | ||
1989 | 3.29 | 11.79 | 27.52 | 32.83 | 39.10 | 45.07 | 52.20 | a | ----- | z | ----- | z | 30.60 | a | 21.55 | a | 11.55 | 27.55 | b | |||||||
1990 | 12.55 | 17.85 | b | 27.04 | e | 33.86 | a | 36.97 | 46.13 | 53.28 | b | 47.23 | e | 45.29 | f | 30.83 | a | 22.97 | 3.35 | 30.19 | a | |||||
1991 | 5.48 | 15.25 | 25.35 | 29.27 | 38.07 | b | 45.93 | 51.42 | 51.87 | 42.66 | a | 30.57 | a | 21.55 | a | 12.32 | 30.81 | |||||||||
1992 | 8.74 | 21.32 | a | 29.03 | 34.55 | a | 42.10 | 45.13 | 50.03 | b | 49.07 | a | 41.83 | 34.03 | 19.76 | a | 11.13 | a | 32.23 | |||||||
1993 | 15.39 | c | 18.46 | 25.27 | a | 31.27 | 40.35 | 43.10 | a | 48.55 | 49.00 | a | 39.11 | b | ----- | z | 18.60 | 14.39 | 31.23 | a | ||||||
1994 | 15.35 | 18.25 | 27.39 | 33.47 | 40.87 | 48.17 | 53.10 | 54.07 | c | 44.45 | a | 33.52 | 22.72 | a | 17.74 | 34.09 | ||||||||||
1995 | 17.74 | 24.32 | 28.52 | 31.77 | 37.94 | 43.17 | 47.90 | 52.63 | a | 44.47 | 29.32 | 25.62 | a | 19.60 | a | 33.58 | ||||||||||
1996 | 12.75 | c | 19.14 | 26.57 | a | 31.87 | 40.94 | 46.90 | 53.58 | 51.58 | 43.43 | 32.39 | 26.30 | 16.74 | 33.52 | |||||||||||
1997 | 16.79 | b | 18.32 | 25.06 | 30.55 | a | 41.29 | 47.86 | a | 51.73 | a | 52.68 | 48.21 | a | 32.44 | d | 24.00 | b | 15.30 | a | 33.69 | |||||
1998 | 18.45 | 22.68 | 25.81 | 32.17 | 39.06 | 42.80 | 56.26 | 53.10 | 49.31 | a | 35.84 | 27.13 | 12.65 | 34.60 | ||||||||||||
1999 | 20.87 | 22.36 | 28.87 | 32.59 | m | 35.59 | i | 43.50 | f | 55.11 | c | 53.46 | c | 42.88 | f | 30.91 | i | 24.14 | i | 15.36 | f | 36.13 | g | |||
2000 | 19.83 | g | 24.33 | e | 28.43 | j | 34.91 | h | 41.48 | h | 47.45 | j | 52.10 | j | 55.80 | p | 44.78 | l | 34.18 | i | 18.25 | j | 13.84 | l | 24.33 | k |
2001 | 8.91 | i | 19.50 | l | 30.14 | q | 33.81 | i | 40.09 | h | 47.10 | i | 55.79 | l | 53.67 | g | 44.38 | i | 38.43 | x | ----- | z | 12.83 | s | ----- | z |
2002 | 11.70 | h | 12.04 | b | 22.42 | e | 34.27 | 37.93 | d | 47.65 | g | 54.57 | c | 48.61 | c | 44.00 | d | 30.39 | c | 21.00 | h | 15.61 | 33.32 | c | ||
2003 | 18.70 | a | 21.00 | c | 26.50 | e | 31.06 | l | 36.93 | a | 45.04 | d | 52.81 | 54.64 | i | 40.28 | a | 35.32 | 27.05 | h | 18.07 | a | 32.74 | c | ||
2004 | 13.10 | 19.21 | e | 27.10 | 35.10 | 38.27 | a | 44.30 | 50.21 | b | 48.56 | d | 42.77 | d | 36.32 | 26.23 | 16.03 | a | 33.10 | |||||||
2005 | 23.77 | a | 24.29 | 27.13 | 32.00 | 39.97 | 46.37 | 52.35 | 51.55 | 43.20 | e | 36.55 | 27.80 | e | 13.00 | 34.83 | ||||||||||
2006 | 14.56 | d | 15.46 | 25.14 | c | 33.10 | a | 40.74 | 47.21 | a | 57.71 | 52.20 | a | 40.13 | 35.72 | b | 23.80 | e | 14.48 | 33.36 | ||||||
2007 | 8.27 | a | 21.62 | b | 27.13 | 34.13 | 39.58 | 47.67 | 55.19 | 55.00 | 44.87 | 32.52 | 21.63 | 14.38 | b | 33.50 | ||||||||||
2008 | 7.58 | 17.14 | 25.27 | i | 29.14 | b | 38.58 | 44.93 | a | 53.71 | 52.61 | 41.55 | a | 32.00 | 26.60 | 15.65 | 32.68 | a | ||||||||
2009 | 13.00 | 20.96 | 24.23 | a | 29.90 | 42.68 | 46.93 | 51.74 | 49.26 | 45.29 | b | 32.94 | 23.47 | 6.39 | 32.23 | |||||||||||
2010 | 11.50 | a | 12.69 | b | 24.10 | a | 31.75 | b | 37.41 | b | 48.13 | 54.90 | 51.84 | 42.43 | 35.39 | 23.03 | 24.20 | a | 33.12 | |||||||
2011 | 12.25 | c | 14.07 | 27.57 | a | 32.66 | a | 37.68 | 46.00 | 53.90 | 52.74 | 44.23 | 33.47 | a | 21.60 | 12.87 | 32.42 | |||||||||
2012 | 12.19 | 18.24 | 25.13 | a | 33.80 | 39.71 | ----- | z | 55.74 | 53.16 | 43.43 | 33.23 | 23.13 | 13.13 | a | 31.90 | a | |||||||||
2013 | 5.58 | 15.26 | e | 24.87 | 30.23 | 38.74 | 47.17 | 56.77 | 52.84 | 49.10 | 32.61 | 25.20 | 13.74 | 32.68 | ||||||||||||
2014 | 11.68 | 19.89 | 25.03 | 32.77 | 39.65 | 45.80 | 54.52 | 51.87 | 45.90 | 35.13 | 21.23 | 20.29 | 33.65 | |||||||||||||
2015 | 17.19 | 23.50 | 27.90 | 32.27 | 39.90 | 49.17 | 53.84 | 52.42 | 45.57 | 38.63 | a | 24.27 | 13.42 | 34.84 | ||||||||||||
2016 | 10.61 | 17.31 | 26.74 | 32.77 | 38.52 | 48.20 | 52.84 | 53.08 | e | 45.03 | 37.26 | 27.21 | a | 16.29 | 33.82 | |||||||||||
2017 | 17.55 | 27.93 | 30.55 | 33.70 | 40.19 | 49.73 | 56.39 | 52.00 | 46.37 | 30.76 | b | 29.47 | 18.97 | 36.13 | ||||||||||||
2018 | 19.03 | 24.43 | 30.77 | 38.57 | 48.37 | a | 56.27 | 58.61 | 52.32 | 44.60 | 36.29 | 21.10 | 14.55 | 37.08 | ||||||||||||
2019 | 12.23 | 15.57 | 27.60 | a | 34.64 | b | 37.20 | a | 45.17 | a | 51.60 | a | 51.47 | a | 45.77 | 26.13 | 23.41 | a | 15.43 | a | 32.19 | |||||
2020 | 12.71 | 14.59 | 29.29 | 32.00 | 40.32 | 48.20 | 52.77 | 51.61 | 41.70 | 29.71 | 21.50 | ----- | z | 34.04 | a | |||||||||||
2021 | ----- | z | 19.25 | 26.83 | a | 33.60 | 45.58 | 52.57 | 60.13 | 53.55 | 47.43 | 32.94 | 22.43 | 19.03 | 37.58 | a | ||||||||||
2022 | 13.03 | 13.93 | 24.55 | 32.76 | a | 41.68 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 25.19 | g | ||||
2023 | ----- | z | ----- | z | 17.97 | 24.40 | 38.26 | 40.90 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 30.38 | h | ||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 13.40 | 18.86 | 26.41 | 32.42 | 39.83 | 46.69 | 53.63 | 51.75 | 44.02 | 33.20 | 23.70 | 14.72 | 33.59 | |||||||||||||
S.D. | 4.73 | 4.07 | 2.44 | 2.40 | 2.43 | 2.98 | 2.71 | 1.81 | 2.66 | 2.74 | 2.56 | 4.02 | 1.40 | |||||||||||||
SKEW | -0.07 | 0.12 | -1.08 | -0.80 | 1.68 | 1.05 | 0.18 | -0.82 | 0.11 | -0.27 | 0.29 | -0.45 | 0.59 | |||||||||||||
MAX | 23.77 | 27.93 | 30.77 | 38.57 | 48.37 | 56.27 | 60.13 | 55.00 | 49.31 | 38.63 | 29.47 | 24.20 | 37.08 | |||||||||||||
MIN | 3.29 | 11.79 | 17.97 | 24.40 | 36.93 | 40.90 | 47.90 | 47.23 | 39.11 | 26.13 | 18.60 | 3.35 | 30.81 | |||||||||||||
YRS | 30 | 33 | 32 | 31 | 32 | 29 | 32 | 30 | 29 | 30 | 29 | 30 | 21 |