YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1988 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 69.15 | g | 71.13 | 68.73 | a | 57.48 | 52.18 | a | 35.54 | b | 24.18 | a | 51.54 | f | ||
1989 | 17.52 | 24.64 | 41.29 | 49.25 | 55.76 | 63.00 | 71.47 | a | ----- | z | ----- | z | 49.02 | b | 36.71 | a | 24.73 | 43.34 | b | |||||||
1990 | 25.35 | 31.29 | b | 40.27 | e | 48.90 | a | 53.48 | b | 66.48 | 70.29 | b | 66.86 | f | 63.40 | f | 47.75 | a | 36.18 | 17.00 | 43.70 | b | ||||
1991 | 18.40 | 30.16 | 36.68 | 43.63 | 54.69 | b | 63.58 | 69.42 | 69.44 | 60.31 | a | 49.25 | a | 32.86 | a | 24.87 | 46.11 | |||||||||
1992 | 22.53 | 34.14 | a | 41.71 | 50.88 | a | 58.15 | 62.40 | 67.14 | b | 67.25 | a | 59.68 | 51.92 | 29.50 | a | 22.52 | a | 47.32 | |||||||
1993 | 25.25 | c | 28.20 | 39.07 | a | 43.78 | 54.50 | 60.86 | a | 67.31 | 66.57 | a | 57.52 | b | ----- | z | 31.26 | a | 26.35 | a | 45.51 | a | ||||
1994 | 28.28 | a | 30.30 | a | 42.55 | a | 47.55 | b | 59.00 | a | 68.23 | b | 72.55 | 71.56 | e | 62.41 | c | 48.54 | c | 34.20 | b | 28.54 | c | 49.47 | ||
1995 | 27.55 | a | 37.15 | a | 41.11 | d | 45.76 | c | 50.62 | c | 60.29 | d | 66.61 | c | 70.59 | c | 61.52 | c | 47.35 | a | 39.22 | a | 31.23 | a | 48.25 | |
1996 | 24.23 | e | 31.06 | b | 39.91 | b | 47.28 | e | 57.31 | d | 65.59 | b | 72.63 | e | 71.24 | 60.41 | h | 48.88 | c | 38.28 | a | 26.62 | b | 47.55 | a | |
1997 | 26.74 | d | 29.38 | c | 41.73 | c | 44.23 | d | 56.69 | b | 65.39 | c | 69.54 | e | 68.30 | d | 62.78 | e | 49.15 | g | 36.46 | e | 26.30 | a | 47.96 | a |
1998 | 29.89 | d | 32.12 | b | 38.98 | e | 46.18 | e | 56.69 | e | 61.11 | h | 72.65 | e | 69.85 | e | 65.59 | c | 50.81 | d | 39.88 | b | 26.62 | b | 48.11 | a |
1999 | 31.37 | a | 34.50 | b | 45.67 | b | 47.53 | n | 52.70 | i | 62.48 | g | 72.98 | f | 69.84 | c | 60.63 | g | 51.60 | j | 43.86 | i | 27.76 | f | 45.34 | h |
2000 | 30.62 | g | 36.81 | e | 41.45 | j | 52.32 | h | 60.07 | i | 67.20 | j | 72.45 | j | 72.80 | p | 62.94 | l | 52.34 | i | 30.02 | j | 25.89 | l | 36.81 | k |
2001 | 23.89 | i | 33.16 | l | 43.36 | q | 49.88 | j | 57.41 | h | 67.19 | i | 72.68 | l | 70.17 | g | 64.92 | j | 57.43 | x | ----- | z | 26.21 | s | ----- | z |
2002 | 24.84 | i | 26.29 | b | 37.38 | f | 51.02 | a | 57.02 | e | 69.19 | i | 75.30 | c | 69.12 | c | 60.27 | d | 46.27 | c | 33.17 | i | 27.05 | 51.54 | d | |
2003 | 32.02 | b | 31.50 | d | 39.42 | e | 48.60 | o | 53.50 | f | 63.32 | e | 74.24 | 73.10 | k | 58.94 | c | 54.59 | d | 36.17 | j | 29.62 | f | 50.58 | e | |
2004 | 24.60 | e | 29.36 | g | 43.86 | b | 48.56 | e | 55.30 | c | 63.34 | a | 68.89 | d | 66.98 | e | 60.76 | e | 50.77 | a | 37.57 | b | 27.68 | a | 49.85 | a |
2005 | 33.55 | a | 34.39 | 39.55 | b | 48.17 | 56.95 | 63.08 | 72.82 | 68.48 | 61.36 | e | 52.19 | 40.50 | e | 24.39 | 49.62 | |||||||||
2006 | 25.61 | d | 28.61 | 37.46 | f | 48.05 | a | 57.65 | 66.97 | a | 72.92 | 68.52 | a | 55.23 | 47.84 | c | 38.22 | e | 25.35 | 48.63 | a | |||||
2007 | 21.75 | a | 32.66 | c | 41.40 | 48.33 | 55.82 | 66.20 | 73.76 | 71.50 | 61.25 | 48.29 | 38.27 | 23.50 | b | 48.56 | ||||||||||
2008 | 18.90 | 27.67 | 38.09 | i | 43.18 | b | 52.56 | 62.76 | a | 71.87 | 69.98 | 59.67 | a | 49.27 | 39.68 | 25.39 | 47.36 | a | ||||||||
2009 | 24.69 | 32.30 | 38.29 | b | 43.77 | 57.48 | 61.13 | 69.73 | 67.66 | 62.36 | b | 45.55 | 38.10 | 18.60 | 46.64 | |||||||||||
2010 | 23.72 | b | 24.12 | b | 37.42 | a | 45.57 | b | 51.59 | b | 65.80 | 72.35 | 68.08 | 62.24 | a | 51.31 | 34.53 | 32.31 | b | 47.42 | ||||||
2011 | 22.79 | c | 25.45 | 39.38 | a | 44.22 | a | 50.97 | 63.97 | 70.10 | 70.68 | 61.63 | 48.90 | a | 34.92 | 26.76 | 46.65 | |||||||||
2012 | 26.50 | 30.33 | 42.55 | b | 50.63 | 57.85 | ----- | z | 73.23 | 70.55 | 61.80 | 49.35 | 39.12 | 24.57 | a | 47.86 | a | |||||||||
2013 | 18.69 | 26.63 | e | 38.32 | 42.85 | 55.00 | 66.88 | 73.37 | 69.48 | 63.22 | 46.15 | 36.60 | 22.42 | 46.63 | ||||||||||||
2014 | 24.35 | 31.18 | 39.26 | 46.13 | 54.53 | 64.69 | a | 72.32 | 66.21 | 62.40 | 50.31 | 36.15 | 30.11 | 48.14 | ||||||||||||
2015 | 28.98 | 36.27 | 43.52 | 46.85 | 52.47 | 67.28 | 69.11 | 69.90 | 63.02 | 54.28 | b | 36.43 | a | 24.24 | 49.36 | |||||||||||
2016 | 22.82 | 31.19 | 39.90 | 46.23 | 53.56 | 68.22 | 71.10 | 67.52 | g | 62.50 | c | 52.82 | a | 40.96 | c | 28.67 | b | 47.09 | a | |||||||
2017 | 26.42 | 37.94 | a | 44.97 | 46.78 | 54.88 | a | 68.43 | a | 72.77 | 69.18 | 62.80 | 47.24 | b | 42.87 | 29.84 | 50.34 | |||||||||
2018 | 29.76 | 32.64 | 40.94 | 49.22 | 61.38 | a | 70.68 | 76.44 | 70.31 | 63.93 | 48.79 | 33.12 | 25.45 | 50.22 | ||||||||||||
2019 | 23.92 | 27.21 | 38.67 | a | 49.00 | b | 50.53 | a | 61.64 | a | 70.27 | a | 70.43 | a | 64.18 | 43.35 | 37.74 | a | 25.82 | a | 46.90 | |||||
2020 | 23.85 | 26.84 | 40.89 | 46.43 | 57.58 | a | 66.27 | 71.18 | 72.39 | 60.87 | 48.47 | 34.17 | ----- | z | 49.90 | a | ||||||||||
2021 | ----- | z | 29.32 | 37.70 | a | 47.87 | 59.89 | 70.80 | 76.76 | 70.92 | 65.83 | 47.58 | 37.58 | 30.13 | 52.22 | a | ||||||||||
2022 | 24.84 | 26.84 | 38.98 | 46.83 | a | 56.87 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 38.87 | g | ||||
2023 | ----- | z | ----- | z | 28.82 | 37.03 | 51.21 | 55.48 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 43.14 | h | ||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 25.16 | 30.60 | 40.09 | 46.59 | 55.42 | 64.74 | 71.59 | 69.42 | 61.48 | 49.28 | 36.78 | 25.90 | 48.11 | |||||||||||||
S.D. | 3.97 | 3.70 | 3.05 | 2.88 | 2.80 | 3.33 | 2.49 | 1.58 | 2.35 | 2.57 | 2.96 | 3.36 | 1.43 | |||||||||||||
SKEW | 0.05 | 0.21 | -1.36 | -1.05 | -0.12 | -0.45 | -0.01 | -0.29 | -0.58 | 0.12 | -0.38 | -0.51 | 0.22 | |||||||||||||
MAX | 33.55 | 37.94 | 45.67 | 51.02 | 61.38 | 70.80 | 76.76 | 72.39 | 65.83 | 54.59 | 42.87 | 32.31 | 50.34 | |||||||||||||
MIN | 17.52 | 24.12 | 28.82 | 37.03 | 50.53 | 55.48 | 66.61 | 66.21 | 55.23 | 43.35 | 29.50 | 17.00 | 46.11 | |||||||||||||
YRS | 30 | 32 | 30 | 31 | 31 | 28 | 31 | 28 | 28 | 29 | 29 | 29 | 15 |