YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1927 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1928 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1929 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1930 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1931 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1932 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1933 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1934 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1935 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1936 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1937 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1938 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1939 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1940 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1941 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1942 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1943 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1944 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1945 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 55.43 | 63.03 | 64.52 | 57.97 | 49.90 | 45.93 | 34.00 | 52.97 | e | |||||||
1949 | 32.00 | 30.39 | 32.26 | 41.47 | 48.00 | 59.47 | 66.48 | 65.39 | 58.17 | 54.17 | a | 39.97 | 33.19 | 46.75 | ||||||||||||
1950 | 33.23 | 25.32 | 27.65 | 37.90 | 45.61 | 55.77 | 62.87 | 63.10 | 56.37 | 51.16 | 43.07 | 31.65 | 44.47 | |||||||||||||
1951 | 28.70 | a | 29.18 | 32.74 | 41.00 | 48.87 | 56.87 | 64.29 | 63.19 | 58.57 | 50.17 | a | 37.57 | 31.55 | 45.22 | |||||||||||
1952 | 29.29 | 27.90 | 31.94 | 41.33 | 47.68 | 58.33 | 65.94 | 64.97 | 57.70 | 47.35 | 39.90 | 32.65 | 45.41 | |||||||||||||
1953 | 30.65 | 29.19 | b | 33.94 | 40.87 | 49.23 | 57.07 | 62.39 | 62.13 | 59.10 | 50.10 | 42.60 | 34.20 | a | 45.95 | |||||||||||
1954 | 23.61 | 30.32 | 32.10 | 39.53 | 47.74 | 57.03 | 61.58 | 61.06 | 56.77 | 51.97 | 39.80 | 30.23 | 44.31 | |||||||||||||
1955 | 24.81 | 26.21 | 31.48 | 39.87 | 47.84 | 54.97 | 65.35 | 66.35 | 57.47 | 50.65 | 38.17 | a | 22.84 | 43.83 | ||||||||||||
1956 | 27.39 | 28.62 | 28.57 | a | 36.00 | 43.00 | 55.43 | 61.35 | 62.45 | 55.43 | 48.19 | 38.67 | 33.13 | 43.19 | ||||||||||||
1957 | 21.93 | a | 28.39 | 32.77 | 39.60 | 47.74 | 59.00 | 61.94 | 60.90 | 59.07 | 48.20 | a | 42.93 | 35.39 | 44.82 | |||||||||||
1958 | 27.90 | 21.71 | 33.26 | 40.53 | 46.61 | 53.20 | 62.71 | 63.42 | 57.33 | 46.77 | 40.70 | 23.52 | 43.14 | |||||||||||||
1959 | 24.16 | 22.00 | 30.84 | 40.13 | 48.35 | 55.07 | a | 63.65 | 63.48 | 59.33 | 50.06 | 38.57 | 32.32 | 44.00 | ||||||||||||
1960 | 27.48 | 29.72 | 26.52 | 39.77 | 48.77 | 58.57 | 62.03 | 62.84 | 57.27 | 48.39 | 42.43 | 24.71 | 44.04 | |||||||||||||
1961 | 21.13 | a | 26.54 | 30.39 | 37.30 | 45.29 | 55.27 | 62.68 | 63.45 | 62.33 | 51.23 | 40.47 | 29.19 | 43.77 | ||||||||||||
1962 | 24.03 | 23.00 | 30.52 | 39.17 | 47.71 | 57.67 | 60.90 | 62.45 | 56.50 | 48.16 | 38.00 | 24.39 | 42.71 | |||||||||||||
1963 | 24.00 | 19.89 | 31.45 | 38.13 | 45.68 | 56.50 | 62.68 | 61.19 | 54.60 | 49.71 | 43.93 | 25.10 | 42.74 | |||||||||||||
1964 | 26.87 | 23.34 | 31.32 | 37.43 | 47.23 | 56.00 | 63.06 | 60.32 | 57.27 | 47.19 | 40.03 | 30.35 | 43.37 | |||||||||||||
1965 | 22.03 | 23.79 | 29.84 | 36.33 | 47.16 | 54.30 | 62.23 | 63.35 | 57.07 | 45.52 | 37.07 | 31.16 | 42.49 | |||||||||||||
1966 | 23.61 | 26.18 | 31.48 | 36.27 | 44.68 | 56.00 | 63.19 | 63.35 | 56.53 | 46.42 | 42.20 | 30.97 | 43.41 | |||||||||||||
1967 | 29.16 | 22.00 | 28.29 | 35.90 | 42.81 | 55.60 | 65.06 | 64.55 | 55.40 | 49.77 | 36.20 | 30.97 | 42.98 | |||||||||||||
1968 | 21.26 | 20.24 | 31.45 | 40.23 | 46.58 | 56.20 | 63.81 | 63.68 | 58.03 | 52.19 | 39.97 | 26.58 | 43.35 | |||||||||||||
1969 | 25.06 | 26.75 | 29.74 | 39.27 | 47.87 | 58.60 | 63.77 | 65.61 | 58.73 | 48.23 | 40.47 | 28.65 | 44.40 | |||||||||||||
1970 | 18.61 | 23.50 | 30.00 | 38.03 | 47.97 | 56.47 | 65.35 | 64.97 | 58.40 | 49.39 | 42.60 | 27.81 | 43.59 | |||||||||||||
1971 | 20.26 | 26.86 | 30.71 | 36.20 | 47.39 | 56.47 | 64.29 | 63.65 | 61.80 | 53.84 | 37.63 | 31.84 | 44.24 | |||||||||||||
1972 | 26.94 | 23.59 | 30.35 | 35.80 | 46.55 | 56.07 | 64.45 | 62.52 | 58.47 | 45.35 | 38.57 | 32.90 | 43.46 | |||||||||||||
1973 | 26.48 | 25.43 | 36.42 | 40.83 | 48.87 | 59.70 | 64.81 | 65.90 | 57.50 | 49.42 | 39.93 | 32.68 | 45.66 | |||||||||||||
1974 | 27.84 | 24.11 | 31.90 | 40.30 | 46.77 | 57.40 | 63.39 | 66.03 | 59.03 | 44.61 | 40.77 | 33.77 | 44.66 | |||||||||||||
1975 | 30.55 | 28.04 | 30.39 | 36.47 | 49.61 | 58.17 | 66.48 | 65.45 | 57.83 | 51.67 | d | 44.60 | 26.94 | 45.52 | ||||||||||||
1976 | 19.52 | 30.10 | 34.61 | 43.37 | 50.90 | 62.30 | 62.00 | 62.39 | 56.90 | 45.97 | 35.23 | 22.58 | 43.82 | |||||||||||||
1977 | 17.03 | 23.29 | 34.23 | 39.23 | 49.29 | 57.47 | 64.74 | 65.52 | 59.33 | 50.03 | 43.00 | 30.68 | 44.49 | |||||||||||||
1978 | 23.52 | 21.29 | 29.19 | 37.70 | 47.13 | 57.07 | 62.29 | 66.03 | 55.13 | 47.97 | 41.50 | 32.29 | 43.43 | |||||||||||||
1979 | 26.87 | 16.82 | 33.90 | 39.33 | 51.97 | 57.10 | 65.13 | 65.10 | 59.53 | 49.74 | 46.50 | 35.13 | 45.59 | |||||||||||||
1980 | 27.94 | 24.10 | 32.03 | 42.47 | 50.77 | 56.80 | 66.77 | 66.35 | 58.97 | 47.61 | 36.93 | 24.61 | 44.61 | |||||||||||||
1981 | 18.00 | 29.11 | 29.97 | 40.53 | 48.87 | 59.17 | 64.71 | 62.90 | 57.33 | 46.84 | 40.37 | 30.58 | 44.03 | |||||||||||||
1982 | 19.23 | a | 27.11 | 31.26 | 36.80 | 48.19 | 55.40 | 64.68 | 60.48 | 55.83 | 48.71 | 42.50 | 35.77 | 43.83 | ||||||||||||
1983 | 27.90 | 28.25 | 35.10 | 41.17 | 48.13 | 58.03 | 63.94 | 62.87 | 59.40 | 49.97 | 42.80 | 27.94 | 45.46 | |||||||||||||
1984 | 24.19 | 32.45 | 29.03 | 39.60 | 49.29 | 59.20 | 63.84 | 65.77 | 56.20 | 51.94 | 40.73 | 37.10 | 45.78 | |||||||||||||
1985 | 24.17 | a | 27.18 | 32.06 | 40.90 | 49.00 | 55.70 | 63.71 | 64.16 | 59.47 | 50.10 | 44.77 | 30.77 | 45.17 | ||||||||||||
1986 | 26.42 | 26.75 | 32.06 | 41.57 | 48.87 | 56.63 | 62.52 | 62.94 | 56.33 | 49.16 | 38.40 | 33.61 | 44.61 | |||||||||||||
1987 | 26.90 | 23.82 | 32.87 | 40.80 | 48.16 | 57.80 | 63.77 | 62.42 | 59.30 | 46.71 | 38.80 | 32.81 | 44.51 | |||||||||||||
1988 | 24.61 | 26.66 | 31.81 | 40.07 | 47.71 | 55.63 | 64.87 | 65.00 | 56.40 | 46.90 | 41.20 | 30.32 | 44.27 | |||||||||||||
1989 | 29.55 | ----- | z | 31.71 | ----- | z | 50.06 | 59.80 | 62.42 | 64.42 | 59.17 | 47.84 | 37.40 | 19.58 | 46.19 | b | ||||||||||
1990 | 31.52 | 26.68 | 30.61 | 39.40 | 48.52 | 58.33 | 65.16 | 66.97 | 53.33 | 52.77 | 42.27 | 35.00 | 45.88 | |||||||||||||
1991 | 27.39 | 30.96 | 35.77 | 42.77 | 52.00 | 58.57 | 62.90 | a | 62.86 | c | 54.83 | 47.70 | a | 41.40 | 30.28 | b | 45.62 | |||||||||
1992 | 25.56 | d | 26.75 | a | 28.81 | 36.10 | a | 45.29 | c | 54.53 | 60.55 | 61.71 | 56.80 | 44.68 | 39.10 | a | 30.77 | a | 42.55 | |||||||
1993 | 29.03 | b | 18.64 | 28.10 | b | 39.07 | 47.77 | 56.03 | 64.39 | 63.00 | 58.97 | a | 46.90 | b | 38.48 | a | 28.29 | c | 43.22 | |||||||
1994 | 15.93 | a | 23.00 | c | 28.55 | 38.53 | 44.81 | 57.03 | 67.83 | a | ----- | z | 56.10 | ----- | z | 42.68 | b | 33.46 | e | 40.79 | b | |||||
1995 | 34.04 | h | 28.12 | d | 35.15 | e | 37.73 | 45.43 | c | 56.24 | a | ----- | z | ----- | z | 54.17 | ----- | z | ----- | z | 25.80 | f | 42.81 | f | ||
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 | 58.18 | h | 49.47 | a | 46.27 | 39.67 | g | 47.87 | j | |
2007 | 30.89 | c | 21.69 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 26.29 | j |
2008 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2009 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2010 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | 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 |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 25.43 | 25.64 | 31.39 | 39.19 | 47.74 | 56.99 | 63.74 | 63.72 | 57.57 | 48.95 | 40.69 | 30.30 | 44.28 | |||||||||||||
S.D. | 4.13 | 3.48 | 2.20 | 2.00 | 1.96 | 1.71 | 1.59 | 1.69 | 1.82 | 2.28 | 2.66 | 3.94 | 1.05 | |||||||||||||
SKEW | -0.39 | -0.36 | 0.18 | -0.11 | -0.27 | 0.53 | 0.30 | -0.05 | 0.09 | 0.19 | 0.25 | -0.75 | 0.25 | |||||||||||||
MAX | 33.23 | 32.45 | 36.42 | 43.37 | 52.00 | 62.30 | 67.83 | 66.97 | 62.33 | 54.17 | 46.50 | 37.10 | 46.75 | |||||||||||||
MIN | 15.93 | 16.82 | 26.52 | 35.80 | 42.81 | 53.20 | 60.55 | 60.32 | 53.33 | 44.61 | 35.23 | 19.58 | 42.49 | |||||||||||||
YRS | 47 | 47 | 47 | 46 | 47 | 48 | 47 | 46 | 48 | 47 | 48 | 47 | 44 |