YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1971 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 30.40 | 23.44 | d | 26.92 | j | |
1972 | 23.26 | b | 25.91 | 35.08 | 36.30 | 40.45 | a | 49.50 | 55.05 | 52.00 | 48.35 | 41.63 | a | 26.26 | a | 23.86 | b | 38.14 | ||||||||
1973 | 21.07 | a | 24.36 | 24.11 | 28.67 | 41.85 | 50.67 | 54.52 | 52.77 | 47.93 | a | 42.32 | a | 33.37 | 27.79 | 37.45 | ||||||||||
1974 | 23.26 | 23.20 | 32.98 | 35.80 | 46.32 | 56.55 | 54.45 | 52.00 | 48.48 | 41.61 | 31.73 | 21.79 | 39.02 | |||||||||||||
1975 | 24.53 | 22.36 | 27.19 | 31.08 | 38.44 | m | 50.55 | 55.71 | c | 52.41 | d | 48.52 | c | 40.83 | d | 33.52 | g | 25.67 | a | 37.89 | b | |||||
1976 | 23.65 | d | 28.60 | e | 27.00 | b | 31.87 | k | 42.52 | g | 49.98 | d | 53.92 | l | 52.40 | f | 47.92 | e | 37.98 | a | 31.33 | c | 24.69 | 33.90 | d | |
1977 | 22.10 | 23.66 | 26.00 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 44.13 | d | 34.40 | a | 32.05 | a | 30.39 | f | ||
1978 | 25.58 | a | 23.98 | c | 31.70 | d | ----- | z | 45.18 | n | 53.40 | ----- | z | ----- | z | 47.00 | r | 43.53 | a | 31.48 | a | 22.65 | a | 33.19 | e | |
1979 | 18.61 | c | 22.85 | e | 26.10 | b | 35.80 | e | 39.66 | l | 50.77 | 56.15 | 52.85 | 51.92 | 43.74 | 28.52 | d | 28.40 | a | 37.79 | a | |||||
1980 | 27.22 | d | 27.63 | b | 26.44 | d | 29.68 | s | ----- | z | 53.60 | 55.98 | f | 53.44 | 50.42 | ----- | z | 31.53 | o | 29.50 | g | 39.79 | f | |||
1981 | 25.22 | f | 26.20 | e | 24.65 | e | 36.27 | o | ----- | z | 55.95 | s | 55.32 | i | 55.10 | j | 49.84 | n | 42.90 | j | 36.88 | d | 31.02 | j | 29.24 | i |
1982 | 24.84 | l | 26.97 | m | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1983 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1984 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1985 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1986 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1987 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1988 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1989 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1990 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1991 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1992 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1993 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1994 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1995 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1996 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1997 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1998 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1999 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2000 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2001 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2002 | ----- | z | 12.20 | w | 30.58 | y | 37.72 | u | ----- | z | 51.36 | s | 55.28 | v | 51.36 | x | 47.95 | t | 36.72 | v | 28.92 | x | 17.89 | v | ----- | z |
2003 | 25.56 | o | 23.62 | g | 23.15 | h | 33.08 | q | 42.45 | t | 48.27 | q | 56.10 | u | 52.80 | u | 45.71 | w | 40.96 | q | ----- | z | 23.80 | p | ----- | z |
2004 | 22.55 | k | 22.31 | u | 32.15 | u | 36.00 | v | 42.00 | y | ----- | z | ----- | z | 48.67 | y | 46.67 | x | 34.54 | r | 30.93 | w | 17.27 | p | ----- | z |
2005 | 21.20 | p | 21.83 | p | 20.77 | t | ----- | z | 34.33 | y | 45.57 | w | ----- | z | 50.21 | x | ----- | z | 38.10 | u | 33.00 | x | 26.07 | p | ----- | z |
2006 | 22.05 | t | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 46.50 | y | 42.92 | y | 29.17 | x | 23.48 | k | ----- | z |
2007 | 22.21 | j | 25.67 | j | 34.41 | n | ----- | z | ----- | z | 53.50 | x | ----- | z | 55.71 | x | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2008 | 24.55 | j | 28.47 | j | 33.27 | k | ----- | z | 45.83 | y | 55.72 | u | ----- | z | ----- | z | 49.50 | u | ----- | z | 38.69 | v | 25.77 | t | ----- | z |
2009 | 27.72 | b | 30.30 | c | 34.16 | f | 42.90 | y | ----- | z | ----- | z | ----- | z | ----- | z | 51.15 | t | 41.76 | n | 37.59 | s | 23.65 | r | 29.01 | j |
2010 | 25.14 | m | 22.02 | f | 29.50 | u | 38.50 | u | 46.40 | j | 53.68 | 57.08 | 57.00 | b | 52.88 | f | 43.68 | c | 30.58 | 31.42 | 45.57 | f | ||||
2011 | 22.45 | 21.37 | a | 35.33 | b | 38.86 | a | 44.26 | b | 54.50 | j | 57.28 | h | 57.14 | i | 51.45 | b | 43.00 | d | 31.76 | e | 22.05 | 34.50 | c | ||
2012 | 27.82 | 25.93 | b | 31.40 | 41.81 | a | 47.65 | 55.04 | d | 57.95 | i | 57.50 | e | 50.28 | c | 47.65 | u | 37.06 | n | 27.58 | 40.56 | c | ||||
2013 | 17.88 | c | 20.61 | 33.08 | a | 38.77 | 45.52 | 55.88 | 56.35 | h | 55.60 | b | 50.98 | a | 39.06 | 34.55 | 26.50 | b | 38.04 | a | ||||||
2014 | 28.98 | e | 30.41 | 33.33 | b | 38.27 | 44.03 | 55.83 | 57.26 | 54.17 | a | 52.97 | 44.44 | 33.47 | a | 28.74 | 41.82 | |||||||||
2015 | 28.52 | 33.00 | 35.06 | 39.21 | a | 42.91 | d | 55.20 | b | 55.35 | 56.85 | a | 53.67 | 45.19 | 32.48 | d | 26.18 | c | 41.97 | |||||||
2016 | 22.93 | a | 29.18 | d | 35.23 | 36.93 | c | 43.73 | 57.05 | a | 57.95 | 53.16 | 51.30 | 46.52 | 37.28 | e | 29.25 | a | 41.71 | |||||||
2017 | 25.25 | c | 31.76 | c | 35.23 | 38.72 | 44.83 | a | 56.40 | 57.61 | 55.33 | a | 54.79 | i | 41.57 | x | 43.34 | b | 30.09 | b | 41.86 | b | ||||
2018 | 27.86 | b | 29.68 | c | 31.74 | h | 42.50 | j | 47.33 | b | 56.18 | e | 58.50 | 56.21 | 52.28 | 40.73 | 32.13 | 25.05 | c | 42.60 | b | |||||
2019 | 23.59 | b | 23.72 | c | 32.37 | 37.52 | 41.15 | 51.48 | a | 56.72 | a | 56.47 | 52.73 | 40.85 | a | 34.33 | 26.24 | 39.76 | ||||||||
2020 | 26.00 | 25.88 | 33.45 | t | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 25.24 | h | 25.94 | j | ||
2021 | 25.95 | 27.86 | 28.83 | p | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 30.95 | a | 28.25 | i | ||
2022 | 24.39 | 20.79 | b | 28.02 | g | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 27.16 | 24.11 | i | ||
2023 | 20.77 | 21.91 | 28.35 | 36.19 | a | 45.44 | 52.25 | 60.98 | 58.02 | 52.72 | a | 44.61 | 35.53 | 27.52 | 40.36 | |||||||||||
2024 | 24.34 | 27.22 | d | 29.61 | d | 31.67 | l | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 27.06 | i | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 24.32 | 25.93 | 30.51 | 36.71 | 44.27 | 53.56 | 56.72 | 54.74 | 50.74 | 42.58 | 33.15 | 26.78 | 40.03 | |||||||||||||
S.D. | 2.97 | 3.54 | 3.95 | 3.36 | 2.25 | 2.57 | 1.83 | 2.11 | 1.97 | 2.25 | 3.65 | 2.97 | 1.74 | |||||||||||||
SKEW | -0.37 | 0.25 | -0.20 | -1.10 | -0.18 | -0.19 | 0.79 | 0.09 | -0.22 | -0.33 | 0.84 | 0.01 | -0.20 | |||||||||||||
MAX | 28.98 | 33.00 | 35.33 | 41.81 | 47.65 | 57.05 | 60.98 | 58.02 | 53.67 | 46.52 | 43.34 | 32.05 | 41.97 | |||||||||||||
MIN | 17.88 | 20.61 | 24.11 | 28.67 | 40.45 | 49.50 | 54.45 | 52.00 | 47.92 | 37.98 | 26.26 | 21.79 | 37.45 | |||||||||||||
YRS | 24 | 25 | 20 | 14 | 13 | 18 | 13 | 16 | 16 | 17 | 19 | 22 | 8 |