YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1948 | 31.29 | 31.90 | 33.68 | 38.47 | 42.77 | 49.73 | s | 50.48 | 51.94 | 44.43 | 38.19 | 34.40 | 30.77 | 38.94 | a | |||||||||||
1949 | 18.48 | 30.32 | 35.58 | 37.93 | 43.74 | 43.97 | 49.13 | 49.00 | 47.07 | 35.90 | 40.30 | 33.55 | 38.75 | |||||||||||||
1950 | 20.45 | 32.75 | 36.23 | 35.93 | 39.00 | 49.13 | 50.03 | 51.16 | 46.03 | 42.19 | 38.87 | 41.52 | 40.27 | |||||||||||||
1951 | 32.61 | 34.43 | 32.39 | 36.43 | 42.42 | 47.97 | 51.06 | 48.65 | 47.60 | 42.13 | 37.33 | 31.74 | 40.40 | |||||||||||||
1952 | 31.45 | 34.41 | 34.65 | 35.60 | 42.16 | 47.80 | 50.94 | 52.29 | 46.21 | a | 41.03 | 30.43 | 34.77 | 40.15 | ||||||||||||
1953 | 41.39 | 34.25 | 35.74 | 38.03 | 43.00 | 47.17 | 49.06 | 51.77 | ----- | z | ----- | z | ----- | z | ----- | z | 42.55 | d | ||||||||
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 | ----- | 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 | 35.58 | 37.14 | 38.03 | 43.53 | 48.17 | a | 50.90 | a | 55.23 | 53.80 | a | 51.34 | a | 45.69 | b | 34.26 | c | 36.03 | b | 44.14 | ||||||
2001 | 36.19 | 32.39 | 39.50 | a | 40.23 | 44.80 | a | 49.14 | a | 54.11 | c | 55.83 | a | 50.96 | c | 44.60 | a | 42.97 | 37.21 | b | 43.99 | |||||
2002 | 40.87 | a | 37.63 | a | 35.83 | g | 42.38 | d | 44.42 | e | 51.80 | e | 55.40 | p | 53.44 | d | 48.90 | j | 43.00 | d | 38.23 | h | 38.48 | b | 44.00 | d |
2003 | 40.37 | d | 36.25 | h | 44.35 | e | 43.24 | a | 46.13 | 52.14 | a | 54.26 | d | 55.21 | c | 52.73 | 50.77 | 37.57 | b | 38.80 | a | 46.87 | a | |||
2004 | 38.04 | c | 38.79 | a | 42.00 | 42.11 | b | 49.83 | b | 54.29 | f | 63.20 | a | 60.70 | a | 52.30 | c | 48.52 | d | 39.69 | a | 39.24 | b | 46.76 | a | |
2005 | 37.08 | g | 31.73 | b | 41.31 | b | 43.88 | f | 50.67 | a | 51.93 | 55.77 | 55.53 | a | 48.37 | 49.83 | a | 38.12 | e | 35.26 | 45.85 | b | ||||
2006 | 42.93 | a | 33.78 | a | 39.58 | 41.73 | 45.87 | 53.03 | 55.73 | a | 53.74 | 50.21 | b | 43.35 | 41.93 | 34.76 | f | 45.63 | a | |||||||
2007 | 31.00 | m | 38.92 | c | 42.96 | e | 42.59 | a | 45.19 | 50.67 | 57.42 | 55.35 | 50.42 | d | 45.22 | d | 38.64 | b | 37.65 | 45.91 | a | |||||
2008 | 33.35 | 37.68 | a | 38.17 | b | 40.29 | b | 48.68 | 49.60 | 54.35 | 56.32 | 50.47 | 44.58 | 42.57 | g | 33.17 | m | 45.35 | b | |||||||
2009 | 34.65 | e | 33.43 | 36.43 | a | 40.96 | c | 45.70 | a | 52.83 | 56.71 | 57.06 | 51.90 | a | 45.94 | 42.70 | ----- | z | 45.30 | a | ||||||
2010 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 53.57 | x | ----- | z | 53.60 | y | ----- | z | ----- | z | ----- | z | ----- | z |
2011 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2012 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2013 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2014 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2015 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2016 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2017 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2018 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 34.12 | 34.64 | 38.04 | 39.96 | 45.16 | 49.86 | 53.83 | 53.86 | 49.29 | 44.06 | 38.25 | 36.25 | 41.28 | |||||||||||||
S.D. | 7.27 | 2.75 | 3.53 | 2.71 | 3.08 | 2.55 | 3.83 | 3.08 | 2.64 | 4.01 | 3.60 | 3.19 | 2.24 | |||||||||||||
SKEW | -0.98 | 0.27 | 0.23 | -0.31 | 0.08 | -0.73 | 0.74 | 0.21 | -0.40 | -0.22 | -0.64 | -0.22 | 0.46 | |||||||||||||
MAX | 42.93 | 38.92 | 44.35 | 43.53 | 50.67 | 53.03 | 63.20 | 60.70 | 52.73 | 50.77 | 42.97 | 41.52 | 44.14 | |||||||||||||
MIN | 18.48 | 30.32 | 32.39 | 35.60 | 39.00 | 43.97 | 49.06 | 48.65 | 44.43 | 35.90 | 30.43 | 30.77 | 38.75 | |||||||||||||
YRS | 14 | 15 | 15 | 15 | 16 | 14 | 15 | 16 | 14 | 15 | 13 | 12 | 6 |