YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1978 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 35.40 | k | 26.17 | a | 21.78 | d | 23.98 | j |
1979 | 11.62 | j | 28.45 | h | 34.77 | 37.50 | 43.13 | a | 48.27 | 53.90 | 53.43 | a | 47.60 | 43.65 | 28.83 | 33.64 | t | 43.45 | c | |||||||
1980 | 23.22 | m | 33.05 | h | 32.62 | b | 38.37 | 43.55 | 48.03 | 54.06 | 49.13 | 47.60 | 39.06 | 33.55 | a | 30.50 | o | 42.89 | c | |||||||
1981 | 29.80 | a | 31.80 | h | 33.30 | d | 38.96 | d | 42.80 | a | 46.45 | a | 49.58 | 52.58 | 46.77 | 38.03 | 34.58 | k | 29.87 | h | 42.03 | c | ||||
1982 | 25.90 | a | 26.88 | d | 31.67 | g | 32.55 | a | 39.67 | a | 52.00 | a | 53.16 | 52.61 | 45.54 | b | 39.52 | 30.56 | c | 29.76 | f | 39.84 | b | |||
1983 | 33.68 | f | 34.00 | d | 37.06 | 34.83 | 43.65 | 47.70 | 52.13 | a | 56.30 | a | 43.23 | 40.61 | 36.80 | o | 24.27 | p | 43.28 | c | ||||||
1984 | 24.71 | n | 31.40 | n | 36.13 | h | 35.24 | a | 41.90 | 46.10 | 52.45 | 52.55 | 44.83 | 36.55 | b | 32.71 | p | 19.75 | s | 44.23 | e | |||||
1985 | 20.40 | p | 22.44 | l | 28.31 | o | 37.87 | 41.80 | a | 46.72 | a | 54.48 | 49.03 | 40.80 | 36.93 | b | 13.62 | q | 18.36 | q | 43.95 | e | ||||
1986 | 28.31 | o | 29.56 | l | 35.63 | d | 32.67 | 42.15 | d | 50.88 | e | 49.67 | d | 55.13 | a | 43.43 | b | 39.04 | e | 32.38 | n | 26.71 | n | 43.57 | d | |
1987 | 20.68 | l | 29.18 | k | 34.17 | m | 39.77 | 45.97 | 50.47 | 53.68 | 49.71 | 47.93 | a | 37.33 | d | 32.59 | m | 24.27 | i | 46.41 | e | |||||
1988 | 24.48 | 28.43 | a | 29.97 | 39.57 | 42.65 | e | 50.37 | 53.23 | 50.39 | 45.07 | 44.29 | 34.07 | 23.71 | 38.85 | |||||||||||
1989 | 27.13 | a | 15.89 | a | 33.87 | 39.47 | 41.94 | 49.30 | 52.06 | 51.29 | 43.93 | 37.77 | 32.11 | b | 23.18 | i | 38.61 | a | ||||||||
1990 | 28.85 | d | 24.52 | c | 31.48 | 40.03 | 42.00 | a | 50.30 | 56.23 | 55.63 | a | 48.69 | a | 38.13 | 32.92 | e | 18.69 | e | 38.96 | ||||||
1991 | 20.83 | a | 32.84 | i | 31.97 | 36.40 | 40.19 | 47.00 | 53.19 | 54.93 | b | 46.73 | 36.07 | a | 34.89 | b | 28.23 | i | 40.22 | b | ||||||
1992 | ----- | z | 33.21 | e | 34.21 | c | ----- | z | 44.13 | a | 50.31 | a | 52.90 | b | 52.35 | 45.26 | c | 38.79 | c | 29.52 | c | 22.36 | f | 42.30 | c | |
1993 | 16.05 | k | 19.26 | i | 33.30 | a | 35.16 | e | 46.96 | d | 46.73 | 47.55 | 49.60 | a | 42.82 | b | 39.00 | c | 20.08 | f | 27.93 | q | 42.64 | d | ||
1994 | 27.79 | l | 24.65 | h | 29.61 | c | 38.58 | d | 43.30 | d | 46.27 | 52.74 | d | 48.52 | d | 47.39 | g | 34.68 | i | 28.64 | h | 24.36 | q | 43.17 | f | |
1995 | 25.89 | m | 29.06 | l | 31.65 | e | 34.19 | d | 42.12 | e | ----- | z | 53.00 | a | 47.32 | 47.54 | b | 33.71 | c | 33.00 | e | 33.54 | r | 40.32 | d | |
1996 | 28.06 | m | 25.93 | a | 32.00 | a | 36.55 | a | 39.50 | c | 44.23 | 52.50 | a | 51.69 | b | 41.30 | c | 36.82 | c | 30.31 | d | 27.68 | c | 38.05 | a | |
1997 | 24.56 | d | 26.68 | 32.32 | c | 35.56 | c | 43.23 | 45.63 | 49.87 | 51.90 | 44.93 | b | 35.29 | c | 29.42 | f | 21.05 | j | 39.00 | b | |||||
1998 | 23.80 | k | 27.26 | i | 29.68 | 31.83 | a | 39.57 | a | 43.57 | 52.03 | 47.13 | 49.79 | a | 35.63 | a | 34.50 | f | 24.76 | j | 41.15 | d | ||||
1999 | 27.47 | l | 27.94 | j | 29.52 | 30.45 | a | 36.54 | e | ----- | z | 48.81 | 52.47 | a | 43.21 | b | 38.07 | d | 39.41 | a | 29.50 | i | 39.81 | d | ||
2000 | 26.45 | k | 32.83 | e | 29.29 | c | 37.43 | b | 42.03 | a | 48.67 | 53.43 | a | 49.86 | c | 46.28 | a | 39.03 | a | 27.57 | b | 27.32 | c | 39.43 | a | |
2001 | 28.20 | a | 26.54 | d | 34.03 | b | 36.53 | 42.57 | c | 47.13 | 52.28 | b | 52.52 | b | 47.52 | a | 37.63 | a | 34.39 | b | 28.35 | k | 39.94 | a | ||
2002 | 25.11 | l | 25.00 | h | 28.54 | e | 33.18 | b | 39.28 | f | 48.46 | d | 55.13 | 47.03 | b | 44.04 | c | 28.85 | e | 27.62 | d | 25.47 | l | 39.11 | d | |
2003 | 29.50 | k | 22.60 | h | 34.04 | c | ----- | z | 40.48 | b | 46.72 | a | 54.18 | c | 52.34 | b | 46.18 | b | 37.76 | f | ----- | z | 28.50 | m | 45.66 | f |
2004 | 27.28 | m | 28.82 | l | 35.39 | 36.43 | 42.50 | c | 48.11 | b | 54.93 | b | 57.27 | a | 46.00 | b | 38.48 | d | 31.00 | c | 30.67 | a | 42.08 | b | ||
2005 | 28.74 | d | 25.38 | b | 33.81 | 37.73 | 46.19 | 47.80 | 54.74 | 53.26 | 42.66 | a | 40.45 | 30.59 | a | 23.43 | c | 38.73 | ||||||||
2006 | 32.25 | c | 25.24 | c | 32.03 | a | 35.93 | b | 43.24 | b | 50.53 | 55.42 | e | 50.66 | b | 45.82 | b | 34.92 | e | 31.70 | c | 25.74 | d | 38.62 | ||
2007 | 20.96 | g | 27.57 | e | 32.58 | e | 31.33 | i | 39.43 | j | 45.26 | g | 57.44 | d | 49.15 | e | 43.52 | e | 36.12 | f | 29.62 | f | 27.54 | e | 39.63 | f |
2008 | 19.36 | f | 28.17 | f | 28.86 | c | 29.56 | e | 42.36 | f | 41.60 | j | 50.95 | k | 50.95 | k | 41.36 | e | 34.28 | m | 34.48 | e | 20.93 | d | 31.04 | g |
2009 | 20.67 | g | 28.12 | b | 29.59 | b | 35.29 | b | 41.24 | f | 50.93 | c | 57.64 | c | 55.64 | f | 49.74 | g | 37.87 | h | 29.38 | i | 19.35 | n | 40.31 | g |
2010 | 34.50 | i | 31.10 | g | 32.00 | f | 35.00 | b | 38.73 | e | 47.56 | e | 52.72 | b | 51.47 | a | 47.82 | b | 40.04 | h | 31.95 | j | 29.00 | k | 45.55 | f |
2011 | 27.25 | c | 24.56 | c | 34.13 | 33.09 | g | 39.14 | i | 46.08 | e | 49.55 | i | 52.20 | a | 49.70 | c | 39.59 | d | 31.00 | f | 21.89 | m | 39.07 | e | |
2012 | 29.24 | b | 27.17 | f | 31.95 | i | 37.71 | b | 40.36 | c | 48.67 | c | 54.43 | c | 55.50 | c | 46.88 | e | 39.57 | j | 31.71 | m | 31.45 | k | 44.68 | e |
2013 | 23.50 | i | 29.67 | d | 33.29 | c | 34.08 | f | 42.54 | g | 50.11 | b | 56.70 | d | 54.59 | d | 50.65 | d | 34.50 | q | 30.64 | e | 20.89 | d | 40.82 | d |
2014 | 26.96 | c | 27.15 | a | 34.93 | b | 38.00 | a | 42.69 | e | 48.19 | d | 60.57 | c | 57.11 | c | 48.92 | f | 45.38 | j | 26.86 | i | 33.12 | e | 40.97 | c |
2015 | 31.76 | f | 34.44 | a | 36.19 | 35.97 | a | 45.97 | 54.80 | 57.80 | a | 55.57 | a | 45.66 | a | 44.03 | a | 30.25 | b | 30.93 | b | 42.87 | a | |||
2016 | 28.33 | j | 32.30 | i | 35.04 | c | 42.04 | g | 46.42 | 50.60 | 53.45 | b | 52.43 | a | 45.50 | b | 42.75 | c | 38.39 | b | 20.46 | c | 42.78 | c | ||
2017 | 19.38 | e | 32.26 | i | 36.11 | d | 38.11 | b | 41.94 | o | 50.08 | d | 58.53 | p | 56.61 | c | 49.44 | c | 36.56 | d | 34.13 | g | 19.94 | o | 40.90 | e |
2018 | ----- | z | ----- | z | 31.19 | d | 37.26 | g | 48.46 | c | 50.35 | d | 56.10 | a | 55.39 | 43.07 | 38.75 | c | 31.37 | k | 25.54 | r | 46.19 | e | ||
2019 | ----- | z | 24.37 | i | 28.34 | b | 41.48 | g | 44.56 | f | 48.73 | d | 52.96 | f | 54.62 | g | 50.92 | f | 35.35 | e | 29.33 | f | 30.90 | j | 37.47 | i |
2020 | 30.20 | k | 29.58 | j | 30.09 | i | 41.33 | x | 44.50 | i | 50.91 | g | 55.00 | e | 56.23 | e | 51.08 | d | 40.52 | h | 33.43 | i | 27.63 | l | 54.10 | i |
2021 | 31.81 | o | 28.56 | l | 30.79 | l | 36.09 | g | 43.52 | d | 56.60 | 59.74 | 56.35 | 47.64 | b | 40.58 | e | 35.65 | j | 29.33 | j | 50.74 | f | |||
2022 | 25.55 | i | 27.43 | e | 34.72 | b | 34.90 | 41.11 | c | 48.36 | b | 50.56 | d | 56.90 | 47.88 | f | 42.07 | a | 25.25 | b | 24.52 | d | 38.58 | b | ||
2023 | 27.57 | c | 25.63 | a | 27.00 | a | 35.21 | b | 46.21 | c | 50.50 | f | 55.13 | a | 56.00 | u | ----- | z | ----- | z | ----- | z | ----- | z | 36.13 | f |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 26.74 | 27.50 | 32.49 | 36.07 | 42.70 | 48.69 | 53.77 | 52.59 | 45.84 | 38.33 | 31.62 | 25.16 | 38.79 | |||||||||||||
S.D. | 3.35 | 4.15 | 2.56 | 2.60 | 2.52 | 2.55 | 2.74 | 2.95 | 2.60 | 3.09 | 3.50 | 4.32 | 0.14 | |||||||||||||
SKEW | -0.78 | -0.53 | -0.28 | -0.63 | 0.09 | 0.77 | 0.17 | -0.13 | 0.03 | -0.39 | 0.33 | 0.30 | -0.01 | |||||||||||||
MAX | 32.25 | 34.44 | 37.06 | 40.03 | 48.46 | 56.60 | 60.57 | 57.27 | 51.08 | 44.29 | 39.41 | 33.12 | 38.96 | |||||||||||||
MIN | 19.38 | 15.89 | 27.00 | 29.56 | 36.54 | 43.57 | 47.55 | 47.03 | 40.80 | 28.85 | 25.25 | 18.69 | 38.62 | |||||||||||||
YRS | 15 | 20 | 37 | 35 | 36 | 39 | 41 | 41 | 39 | 34 | 23 | 15 | 4 |