YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1970 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | ----- | 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 | 39.00 | l | 29.00 | c | 22.00 | 16.00 | 5.00 | e | ----- | z | ||
1989 | 10.00 | i | ----- | z | -0.00 | c | 29.00 | c | 29.00 | e | 35.00 | g | 42.00 | p | 38.00 | h | 34.00 | m | 23.00 | m | 21.00 | p | 16.00 | n | ----- | z |
1990 | ----- | z | ----- | z | 21.00 | t | 28.00 | c | 28.00 | b | 35.00 | c | 39.00 | c | 40.00 | a | 39.00 | a | 24.00 | 19.00 | j | -8.00 | l | ----- | z | |
1991 | 5.00 | f | 24.00 | a | 16.00 | b | 26.00 | b | 32.00 | a | 29.00 | b | 39.00 | a | 38.00 | b | 29.00 | c | 13.00 | i | 16.00 | c | 20.00 | h | ----- | z |
1992 | 18.00 | c | 24.00 | a | 22.00 | a | 22.00 | a | 27.00 | e | 38.00 | d | 44.00 | e | 31.00 | i | 31.00 | h | 21.00 | n | 14.00 | i | 6.00 | i | ----- | z |
1993 | -4.00 | p | 5.00 | m | 6.00 | l | 26.00 | m | 29.00 | p | 34.00 | j | 40.00 | n | 35.00 | q | 29.00 | n | 27.00 | p | -6.00 | n | 15.00 | v | ----- | z |
1994 | 14.00 | p | -0.00 | 18.00 | 26.00 | f | 30.00 | d | 28.00 | c | 35.00 | 42.00 | 37.00 | h | 27.00 | f | 8.00 | c | 2.00 | ----- | z | |||||
1995 | 6.00 | d | 2.00 | b | ----- | z | 24.00 | c | 33.00 | d | 34.00 | j | 38.00 | q | 25.00 | h | 28.00 | b | 18.00 | e | 18.00 | b | 5.00 | e | ----- | z |
1996 | -15.00 | e | -15.00 | b | 6.00 | f | 24.00 | c | 26.00 | c | 37.00 | c | 38.00 | 36.00 | c | 27.00 | b | 22.00 | d | 19.00 | d | 4.00 | d | ----- | z | |
1997 | 5.00 | i | 12.00 | b | 14.00 | b | 22.00 | b | 31.00 | b | 36.00 | a | 46.00 | a | 44.00 | 37.00 | a | 25.00 | 20.00 | h | 12.00 | c | ----- | z | ||
1998 | -7.00 | a | 17.00 | b | 22.00 | d | 27.00 | c | 31.00 | c | 39.00 | d | 40.00 | b | 44.00 | a | 38.00 | b | 24.00 | d | 25.00 | d | -7.00 | e | ----- | z |
1999 | 8.00 | a | 14.00 | c | 23.00 | j | 23.00 | c | 26.00 | d | 33.00 | b | 39.00 | b | 33.00 | b | 30.00 | b | 25.00 | f | 25.00 | a | 23.00 | c | ----- | z |
2000 | 12.00 | e | 16.00 | a | 27.00 | b | 31.00 | b | 29.00 | a | 39.00 | b | 38.00 | a | 41.00 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2001 | ----- | z | 15.00 | p | 22.00 | g | 22.00 | e | 27.00 | h | 35.00 | c | 40.00 | 39.00 | a | 35.00 | b | 28.00 | f | 28.00 | a | 17.00 | e | ----- | z | |
2002 | 11.00 | r | 9.00 | d | 11.00 | k | 24.00 | r | 25.00 | n | 31.00 | s | 40.00 | p | 39.00 | a | 33.00 | e | 9.00 | d | 10.00 | b | 23.00 | b | ----- | z |
2003 | 21.00 | a | 21.00 | n | ----- | 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 | 10.00 | w | ----- | z | ----- | z | ----- | z | ----- | z | 43.00 | u | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2006 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | -1.00 | o | -2.00 | i | ----- | z |
2007 | -4.00 | g | 16.00 | m | 13.00 | i | 23.00 | k | 28.00 | k | 34.00 | m | 44.00 | p | 40.00 | m | 32.00 | o | 25.00 | q | 12.00 | n | 11.00 | t | ----- | z |
2008 | 5.00 | m | ----- | z | 20.00 | r | 21.00 | t | 26.00 | l | 32.00 | n | 37.00 | o | 40.00 | p | 31.00 | m | 25.00 | p | 23.00 | s | -5.00 | t | ----- | z |
2009 | 2.00 | r | 16.00 | n | 1.00 | r | ----- | z | 31.00 | r | 39.00 | k | 40.00 | p | 42.00 | p | 34.00 | r | 20.00 | j | 20.00 | n | -0.00 | m | ----- | z |
2010 | 13.00 | o | 20.00 | o | 19.00 | x | ----- | z | ----- | z | ----- | z | 36.00 | r | 40.00 | u | 37.00 | i | ----- | z | 7.00 | x | 19.00 | l | ----- | z |
2011 | 1.00 | l | 4.00 | j | 22.00 | l | 24.00 | m | 28.00 | l | 35.00 | s | 41.00 | m | 40.00 | o | 37.00 | l | 25.00 | r | 20.00 | k | 18.00 | r | ----- | z |
2012 | 12.00 | l | 10.00 | k | 16.00 | g | 24.00 | q | 25.00 | b | 39.00 | o | 37.00 | 41.00 | f | ----- | z | 27.00 | n | 16.00 | a | 12.00 | j | ----- | z | |
2013 | 7.00 | d | 19.00 | 19.00 | 25.00 | 24.00 | 38.00 | 47.00 | 48.00 | 37.00 | 24.00 | 15.00 | -4.00 | -4.00 | d | |||||||||||
2014 | 16.00 | -3.00 | 9.00 | 28.00 | 32.00 | 38.00 | 45.00 | 47.00 | 38.00 | 32.00 | 5.00 | 4.00 | -3.00 | |||||||||||||
2015 | 4.00 | 18.00 | 17.00 | 24.00 | 30.00 | 36.00 | 44.00 | 45.00 | 34.00 | 33.00 | 13.00 | 6.00 | 4.00 | |||||||||||||
2016 | 5.00 | 19.00 | 25.00 | 29.00 | 34.00 | 34.00 | 41.00 | 43.00 | 37.00 | 27.00 | 26.00 | -1.00 | -1.00 | |||||||||||||
2017 | -1.00 | d | 10.00 | 19.00 | 26.00 | 30.00 | 36.00 | 43.00 | 43.00 | 35.00 | 26.00 | 17.00 | a | 5.00 | -1.00 | e | ||||||||||
2018 | 16.00 | -4.00 | 19.00 | 25.00 | 35.00 | q | 34.00 | 40.00 | 43.00 | 36.00 | 26.00 | 21.00 | 13.00 | -4.00 | q | |||||||||||
2019 | 16.00 | 1.00 | 5.00 | 28.00 | 30.00 | 34.00 | 42.00 | 47.00 | 30.00 | 11.00 | 12.00 | 17.00 | 1.00 | |||||||||||||
2020 | 12.00 | 15.00 | 17.00 | 23.00 | 29.00 | 35.00 | 41.00 | 39.00 | 36.00 | 12.00 | 17.00 | 18.00 | 12.00 | |||||||||||||
2021 | 13.00 | 4.00 | b | 21.00 | 20.00 | 29.00 | 34.00 | 43.00 | 44.00 | 32.00 | 26.00 | 18.00 | h | 5.00 | 4.00 | j | ||||||||||
2022 | -1.00 | 5.00 | ----- | z | ----- | z | ----- | z | ----- | z | 46.00 | g | 42.00 | 37.00 | 29.00 | g | 11.00 | -7.00 | ----- | z | ||||||
2023 | ----- | z | 1.00 | o | 16.00 | 22.00 | m | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 7.65 | 9.35 | 16.82 | 25.30 | 29.25 | 35.16 | 41.05 | 41.85 | 33.85 | 22.56 | 16.74 | 7.37 | 1.50 | |||||||||||||
S.D. | 9.56 | 10.35 | 6.85 | 2.92 | 2.65 | 2.97 | 3.15 | 3.80 | 3.80 | 6.91 | 6.27 | 9.21 | 5.89 | |||||||||||||
SKEW | -0.78 | -0.53 | -0.99 | 0.14 | -0.26 | -0.93 | 0.15 | -0.45 | -0.44 | -0.65 | 0.12 | 0.19 | 0.96 | |||||||||||||
MAX | 21.00 | 24.00 | 27.00 | 31.00 | 34.00 | 39.00 | 47.00 | 48.00 | 39.00 | 33.00 | 28.00 | 23.00 | 12.00 | |||||||||||||
MIN | -15.00 | -15.00 | -0.00 | 20.00 | 24.00 | 28.00 | 35.00 | 33.00 | 27.00 | 9.00 | 5.00 | -7.00 | -4.00 | |||||||||||||
YRS | 17 | 20 | 17 | 20 | 20 | 19 | 20 | 20 | 20 | 16 | 19 | 19 | 6 |