YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1973 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 37.88 | g | 27.93 | b | 21.35 | 24.64 | j | |
1974 | 19.58 | 19.42 | b | 29.62 | e | 30.47 | m | 44.27 | p | 55.58 | f | 51.88 | f | 55.72 | f | 50.96 | c | 43.30 | a | 29.97 | 18.97 | 30.26 | e | |||
1975 | 18.26 | 23.14 | 27.45 | 29.67 | 39.43 | a | 46.17 | 57.60 | a | 56.45 | 50.23 | 37.56 | d | 25.66 | a | 20.03 | 35.97 | |||||||||
1976 | 20.00 | a | 28.10 | 23.54 | e | 33.27 | 44.84 | 50.30 | 58.26 | 55.26 | 51.13 | 37.03 | 25.80 | 18.48 | 37.17 | |||||||||||
1977 | 16.35 | 23.82 | 25.13 | 34.77 | 40.74 | 52.97 | 58.81 | 58.40 | a | 53.57 | 41.90 | 29.17 | 27.19 | 38.57 | ||||||||||||
1978 | 24.55 | 24.89 | 32.42 | 34.67 | 41.32 | 52.07 | 56.19 | 52.29 | 47.57 | ----- | z | 32.89 | c | ----- | z | 39.89 | b | |||||||||
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 25.03 | a | ----- | z | 25.03 | k |
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1981 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1982 | ----- | z | ----- | z | ----- | 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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 29.81 | c | 21.76 | b | 25.79 | j |
2003 | 28.14 | b | 28.62 | b | 30.79 | c | 34.50 | d | 46.31 | b | 55.03 | 63.47 | a | 62.50 | a | 54.29 | b | 46.90 | a | 32.28 | a | 25.00 | 42.32 | |||
2004 | 25.50 | a | 23.89 | a | 37.19 | 39.07 | a | 47.00 | 54.63 | 60.03 | 58.81 | 51.57 | 47.07 | q | 32.43 | g | 24.73 | a | 42.24 | b | ||||||
2005 | 31.39 | 31.82 | 31.80 | a | 38.63 | 46.77 | a | 52.41 | a | 61.47 | a | 59.29 | 54.20 | 42.90 | b | 30.38 | d | 23.45 | 42.04 | |||||||
2006 | 23.35 | 25.82 | 31.03 | a | 39.47 | 48.77 | 57.27 | 62.19 | j | 59.03 | a | 49.07 | c | 39.58 | 31.54 | b | 21.84 | 38.80 | a | |||||||
2007 | 19.42 | 26.85 | a | 31.90 | a | 37.10 | 45.26 | 53.73 | 60.71 | 60.06 | 53.17 | a | 40.00 | 32.57 | 20.00 | a | 40.06 | |||||||||
2008 | 15.23 | a | 24.18 | a | 26.75 | c | 30.44 | e | 38.61 | c | 49.17 | 59.15 | e | 58.97 | 50.33 | 39.71 | 29.03 | 22.94 | 37.04 | |||||||
2009 | 21.68 | 22.00 | 28.80 | a | 33.13 | 48.19 | 46.38 | q | 59.70 | k | 57.70 | a | ----- | z | ----- | z | ----- | z | ----- | z | 35.25 | f | ||||
2010 | ----- | z | ----- | z | ----- | z | 33.87 | 40.54 | c | 52.59 | c | 61.60 | a | 59.48 | 53.86 | b | 43.60 | a | 25.45 | a | 28.63 | a | 44.40 | c | ||
2011 | 18.13 | 19.24 | c | 32.03 | 36.26 | c | 41.34 | b | 52.07 | 60.06 | 60.87 | 53.19 | d | 40.10 | 29.62 | a | 20.80 | a | 38.64 | |||||||
2012 | 22.70 | a | 24.39 | a | 28.24 | b | 37.83 | a | 45.69 | b | 54.68 | b | 60.18 | c | 59.81 | 52.00 | 39.84 | 29.79 | a | 22.45 | b | 39.80 | ||||
2013 | 15.90 | 20.46 | 30.90 | 35.97 | 43.10 | 55.27 | 61.52 | 58.79 | b | 52.37 | 35.13 | 31.37 | 19.60 | a | 38.36 | |||||||||||
2014 | 20.52 | 26.82 | 31.07 | a | 35.64 | b | 43.23 | 53.52 | c | 58.55 | b | 55.93 | d | 54.31 | a | 43.17 | b | 29.47 | 26.12 | f | 41.11 | a | ||||
2015 | 26.31 | b | 29.79 | 34.41 | d | 36.23 | 42.06 | 55.03 | 58.66 | b | 58.80 | a | 52.78 | c | 43.55 | b | 27.23 | d | 21.07 | d | 40.49 | |||||
2016 | 21.68 | c | 25.12 | d | 28.65 | h | 32.90 | 41.39 | m | ----- | z | ----- | z | ----- | z | 47.00 | x | 44.64 | c | 32.78 | u | 25.67 | v | 31.09 | h | |
2017 | 26.71 | 30.79 | 34.21 | q | 35.43 | 43.16 | 55.73 | 60.94 | 57.42 | 50.57 | 35.50 | c | 35.39 | b | 21.84 | 41.23 | a | |||||||||
2018 | 22.97 | 24.75 | 30.68 | 38.90 | 45.68 | 55.60 | 61.77 | 59.19 | 52.83 | 42.10 | 25.90 | 23.86 | b | 40.35 | ||||||||||||
2019 | 21.74 | 22.14 | 32.48 | 37.40 | 40.32 | 52.10 | 60.45 | 59.84 | 53.57 | 36.13 | 28.47 | 24.42 | 39.09 | |||||||||||||
2020 | 23.13 | 23.82 | a | 32.16 | 36.83 | 45.68 | 54.33 | 60.06 | 60.65 | 50.70 | 40.17 | a | 32.10 | 17.29 | 39.74 | |||||||||||
2021 | 17.97 | 23.61 | 28.52 | 37.53 | 43.84 | 56.14 | b | 61.47 | a | 58.65 | 53.10 | 38.55 | 31.13 | 26.71 | 39.77 | |||||||||||
2022 | 20.39 | 20.79 | 28.52 | 36.27 | 46.29 | 56.37 | 62.03 | 60.06 | 54.13 | 40.42 | 24.33 | 24.55 | 39.51 | |||||||||||||
2023 | 22.48 | 19.57 | e | 29.39 | 34.70 | 44.10 | 48.97 | 62.03 | 59.68 | 52.53 | 40.13 | 30.87 | 24.68 | 39.09 | ||||||||||||
2024 | 23.32 | 27.69 | 29.44 | m | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 25.51 | j | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 21.82 | 24.67 | 30.21 | 35.62 | 43.84 | 53.31 | 60.23 | 58.66 | 52.17 | 40.52 | 29.35 | 22.57 | 39.30 | |||||||||||||
S.D. | 3.86 | 3.45 | 2.97 | 2.51 | 2.83 | 2.70 | 1.72 | 2.08 | 1.78 | 3.03 | 2.80 | 2.86 | 1.64 | |||||||||||||
SKEW | 0.40 | 0.26 | -0.09 | -0.58 | -0.13 | -0.91 | -0.44 | -1.21 | -0.80 | 0.00 | -0.08 | 0.21 | -0.11 | |||||||||||||
MAX | 31.39 | 31.82 | 37.19 | 39.47 | 48.77 | 57.27 | 63.47 | 62.50 | 54.31 | 46.90 | 35.39 | 28.63 | 42.32 | |||||||||||||
MIN | 15.23 | 19.24 | 23.54 | 29.67 | 38.61 | 46.17 | 56.19 | 52.29 | 47.57 | 35.13 | 24.33 | 17.29 | 35.97 | |||||||||||||
YRS | 26 | 26 | 23 | 25 | 24 | 23 | 22 | 24 | 24 | 23 | 26 | 24 | 17 |