YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1963 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1964 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1965 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1966 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1967 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1968 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1969 | ----- | z | ----- | z | ----- | z | ----- | z | 48.39 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 48.39 | k | |
1970 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 41.23 | ----- | z | ----- | z | 41.23 | k | |
1971 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1972 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1973 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1974 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1975 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1976 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1978 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1981 | 31.41 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 31.41 | k |
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 | ----- | z | ----- | z | ----- | z |
2003 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2004 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2005 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2006 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2007 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2008 | ----- | z | ----- | z | ----- | z | ----- | z | 43.00 | s | 45.93 | 55.35 | 53.10 | a | 48.36 | e | 38.15 | e | 32.13 | 22.39 | 42.20 | e | ||||
2009 | 22.62 | r | 26.36 | c | 29.07 | c | 33.23 | 43.48 | 49.20 | 55.90 | b | 55.29 | 50.07 | 37.74 | 29.50 | 23.45 | 39.39 | a | ||||||||
2010 | 33.65 | 32.50 | 31.45 | 33.23 | 37.71 | 48.30 | 55.84 | 52.71 | 44.40 | 40.45 | 25.37 | 28.40 | a | 38.67 | ||||||||||||
2011 | 22.39 | 23.50 | 29.68 | 27.27 | 33.68 | 40.45 | a | 51.50 | a | 51.55 | 49.40 | 38.29 | 30.03 | 19.42 | 34.76 | |||||||||||
2012 | 22.19 | 24.93 | 28.90 | 36.13 | 41.03 | b | 45.36 | b | 54.58 | 56.20 | a | 50.59 | a | 41.61 | 36.07 | a | 28.48 | 38.84 | ||||||||
2013 | 21.77 | 25.43 | 33.26 | 37.85 | c | 44.23 | 51.20 | 60.29 | 55.48 | 50.00 | 35.94 | 32.43 | 18.87 | 38.90 | ||||||||||||
2014 | 26.39 | 31.68 | 35.45 | 37.33 | 43.90 | 49.27 | 61.55 | 58.52 | 51.97 | 42.68 | c | 33.72 | a | 34.61 | 42.26 | |||||||||||
2015 | 27.69 | b | 33.96 | b | 36.93 | b | 35.93 | a | 43.85 | d | 54.96 | d | 58.24 | b | 55.37 | a | 47.38 | a | 43.70 | a | 29.90 | a | 30.26 | 41.51 | ||
2016 | 28.77 | a | 33.26 | b | 35.11 | d | 40.04 | b | 44.03 | 50.83 | 55.30 | a | 53.32 | 47.57 | 38.64 | c | 34.27 | 23.46 | g | 41.92 | a | |||||
2017 | 21.04 | c | 29.00 | d | 33.78 | d | 34.21 | b | 41.29 | c | 47.93 | 53.60 | a | 55.67 | d | 48.46 | b | 35.62 | b | 31.07 | b | 23.23 | 37.91 | |||
2018 | 31.17 | b | 25.38 | b | 30.43 | c | 37.41 | c | 45.58 | 48.00 | b | 59.12 | f | 56.61 | c | 46.86 | a | 40.39 | 31.80 | 28.23 | 38.35 | a | ||||
2019 | 29.80 | a | 27.59 | a | 31.32 | 40.47 | 43.00 | 49.30 | 55.13 | a | 56.65 | 47.17 | 34.87 | 29.79 | a | 30.43 | a | 39.63 | ||||||||
2020 | 29.33 | a | 28.33 | b | 30.52 | b | 38.00 | a | 44.90 | b | 50.17 | 55.61 | 57.26 | d | 51.93 | b | 40.00 | c | 27.68 | e | 24.33 | a | 39.84 | |||
2021 | 26.70 | a | 27.65 | b | 28.74 | 37.19 | c | 42.68 | c | 55.37 | 62.14 | c | 56.88 | f | 49.83 | a | 39.81 | 33.10 | 27.77 | 39.18 | a | |||||
2022 | 28.15 | d | 26.41 | f | 33.72 | f | 32.67 | 39.15 | d | 48.46 | d | 58.69 | b | 60.21 | c | 52.48 | e | 41.36 | c | 27.56 | e | 25.63 | d | 41.44 | b | |
2023 | 27.15 | d | 24.32 | c | 27.05 | l | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 25.73 | j |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 27.17 | 28.14 | 31.90 | 35.78 | 42.46 | 48.98 | 56.69 | 55.57 | 49.10 | 39.40 | 30.96 | 26.11 | 39.15 | |||||||||||||
S.D. | 3.84 | 3.48 | 2.74 | 3.44 | 3.54 | 3.63 | 3.07 | 2.34 | 2.23 | 2.54 | 2.84 | 4.44 | 2.15 | |||||||||||||
SKEW | -0.23 | 0.43 | 0.49 | -0.93 | -0.92 | -0.32 | 0.40 | 0.12 | -0.27 | -0.24 | -0.17 | 0.03 | -0.56 | |||||||||||||
MAX | 33.65 | 33.96 | 36.93 | 40.47 | 48.39 | 55.37 | 62.14 | 60.21 | 52.48 | 43.70 | 36.07 | 34.61 | 42.26 | |||||||||||||
MIN | 21.04 | 23.50 | 28.74 | 27.27 | 33.68 | 40.45 | 51.50 | 51.55 | 44.40 | 34.87 | 25.37 | 18.87 | 34.76 | |||||||||||||
YRS | 15 | 14 | 13 | 14 | 15 | 15 | 14 | 14 | 15 | 16 | 15 | 14 | 9 |