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 | 61.23 | 69.53 | 71.00 | 65.02 | 54.89 | 50.65 | 39.18 | 58.79 | e | |||||||
1949 | 37.60 | 36.68 | 37.84 | 47.50 | 54.52 | 66.43 | 73.03 | 71.39 | 63.73 | 59.30 | a | 46.12 | a | 39.35 | 52.79 | |||||||||||
1950 | 40.08 | 31.46 | 34.47 | 43.65 | 51.19 | 62.48 | 68.91 | b | 68.81 | 61.77 | 56.60 | 48.63 | 37.03 | 50.42 | ||||||||||||
1951 | 35.28 | b | 35.12 | 38.50 | 48.00 | 56.11 | 62.68 | 70.68 | 69.50 | 65.23 | 56.25 | a | 44.28 | a | 39.03 | 51.72 | ||||||||||
1952 | 35.74 | 33.66 | 37.37 | 47.93 | 54.56 | 65.63 | 73.81 | 71.11 | 64.55 | 53.81 | 45.95 | 37.76 | 51.82 | |||||||||||||
1953 | 36.50 | 35.33 | d | 39.48 | 46.98 | 55.63 | 64.38 | 69.48 | 68.63 | 65.65 | 56.26 | 48.47 | 41.07 | a | 52.32 | |||||||||||
1954 | 30.98 | 36.86 | 38.44 | 46.28 | 53.63 | 63.63 | 68.35 | 67.31 | 62.70 | 57.92 | 45.72 | 36.06 | 50.66 | |||||||||||||
1955 | 30.35 | 32.50 | 37.52 | 45.90 | 55.73 | 62.25 | 72.19 | 72.00 | 63.50 | 56.52 | 44.27 | b | 28.79 | 50.13 | ||||||||||||
1956 | 32.05 | 33.53 | 33.98 | a | 42.45 | 49.79 | 62.92 | 67.05 | 68.94 | 61.87 | 54.81 | 45.72 | 39.87 | 49.41 | ||||||||||||
1957 | 28.60 | a | 34.29 | 38.56 | 46.52 | 54.82 | 66.07 | 69.29 | 67.63 | 65.10 | 54.62 | b | 48.43 | 41.73 | 51.30 | |||||||||||
1958 | 33.35 | 26.95 | 38.00 | 46.93 | 52.11 | 59.78 | 68.69 | 69.05 | 62.72 | 52.68 | 46.93 | 30.10 | 48.94 | |||||||||||||
1959 | 30.89 | 29.45 | 36.77 | 46.08 | 55.97 | 61.60 | a | 69.08 | a | 69.92 | 66.15 | 56.03 | 45.23 | 38.10 | 50.44 | |||||||||||
1960 | 33.00 | 35.47 | 32.37 | 46.25 | 55.06 | 64.80 | 68.52 | 68.37 | 63.15 | 54.71 | 48.02 | 31.73 | 50.12 | |||||||||||||
1961 | 26.75 | a | 32.81 | a | 36.32 | 43.60 | 51.35 | 61.60 | 69.08 | 69.23 | 67.73 | 56.55 | 45.52 | 34.61 | 49.60 | |||||||||||
1962 | 30.85 | 28.48 | 36.42 | 45.10 | 54.65 | 64.23 | 67.18 | 68.44 | 62.25 | 53.73 | 43.28 | 31.00 | 48.80 | |||||||||||||
1963 | 30.11 | 26.55 | 36.98 | 45.30 | 52.31 | 63.45 | 69.39 | 67.92 | 59.70 | 56.19 | 48.75 | 29.98 | 48.89 | |||||||||||||
1964 | 32.89 | 29.45 | 37.03 | 43.28 | 54.85 | 62.75 | 68.39 | 66.71 | 62.97 | 53.18 | 46.33 | 36.19 | 49.50 | |||||||||||||
1965 | 28.06 | 29.64 | 34.97 | 42.45 | 54.53 | 61.00 | 68.48 | 69.52 | 62.83 | 51.71 | 42.82 | 36.40 | 48.54 | |||||||||||||
1966 | 29.31 | 31.50 | 37.23 | 42.18 | 50.95 | 62.23 | 70.06 | 69.71 | 62.38 | 52.81 | 47.30 | 36.23 | 49.32 | |||||||||||||
1967 | 35.79 | 28.70 | 33.19 | 42.17 | 48.47 | 61.53 | 69.82 | 68.81 | 61.52 | 55.50 | 41.62 | 36.76 | 48.66 | |||||||||||||
1968 | 27.11 | 26.53 | 37.53 | 46.63 | 52.98 | 62.17 | 70.18 | 69.66 | 65.28 | 57.35 | 45.30 | 32.76 | 49.46 | |||||||||||||
1969 | 30.61 | 30.52 | 34.66 | 45.67 | 54.73 | 64.92 | 68.92 | 71.37 | 64.30 | 54.63 | 45.80 | 34.37 | 50.04 | |||||||||||||
1970 | 24.31 | 30.59 | 35.31 | 44.62 | 54.82 | 62.05 | 70.76 | 71.40 | 64.28 | 55.63 | 47.38 | 33.68 | 49.57 | |||||||||||||
1971 | 26.73 | 31.73 | 36.32 | 42.85 | 53.26 | 63.58 | 70.77 | 70.08 | 67.33 | 59.68 | 44.13 | 38.77 | 50.44 | |||||||||||||
1972 | 33.66 | 30.88 | 35.94 | 42.43 | 53.48 | 61.53 | 71.35 | 70.26 | 64.28 | 51.60 | 43.62 | 38.69 | 49.81 | |||||||||||||
1973 | 32.97 | 31.62 | 41.63 | 46.73 | 54.34 | 65.15 | 70.61 | 72.00 | 63.92 | 56.08 | 45.57 | 39.56 | 51.68 | |||||||||||||
1974 | 34.35 | 30.41 | 38.50 | 47.07 | 52.69 | 62.90 | 69.55 | 72.02 | 64.50 | 51.32 | 46.52 | 39.08 | 50.74 | |||||||||||||
1975 | 36.53 | 33.11 | 36.65 | 42.87 | 55.85 | 63.92 | 71.71 | 71.23 | 62.90 | 57.22 | d | 50.52 | 34.31 | 51.40 | ||||||||||||
1976 | 27.44 | 37.74 | 40.87 | 51.12 | a | 58.05 | 69.40 | 68.82 | 68.77 | 62.55 | 51.06 | 39.98 | 29.65 | 50.45 | ||||||||||||
1977 | 22.58 | 28.52 | 40.10 | 46.43 | 56.00 | 63.48 | 71.15 | 70.89 | 64.10 | 55.05 | 47.85 | 35.77 | 50.16 | |||||||||||||
1978 | 29.15 | 26.41 | 34.21 | 43.90 | 53.32 | 63.78 | 67.90 | 70.97 | 61.33 | 54.08 | 46.40 | 37.98 | 49.12 | |||||||||||||
1979 | 33.03 | 22.04 | 40.00 | 45.28 | 57.18 | 63.20 | 70.97 | 70.53 | 65.23 | 54.74 | 51.40 | 40.79 | 51.20 | |||||||||||||
1980 | 33.27 | 29.84 | 38.16 | 47.93 | 57.03 | 63.15 | 72.71 | 71.87 | 64.80 | 52.74 | 42.87 | 32.06 | 50.54 | |||||||||||||
1981 | 23.84 | 35.04 | 35.77 | 46.18 | 54.95 | 64.95 | 70.76 | 68.27 | 62.42 | 51.87 | 44.88 | 35.73 | 49.56 | |||||||||||||
1982 | 26.53 | b | 32.32 | 37.03 | 42.98 | 54.68 | 61.50 | 71.55 | 67.37 | 62.15 | 54.58 | 48.78 | 41.52 | 50.08 | ||||||||||||
1983 | 34.13 | 34.70 | 40.66 | 47.42 | 54.16 | 65.52 | 71.53 | 69.84 | 67.03 | 56.26 | 49.17 | 35.19 | 52.13 | |||||||||||||
1984 | 30.11 | 37.88 | 34.58 | 45.92 | 55.82 | 66.00 | 69.73 | 72.44 | 63.57 | 58.26 | 47.20 | 43.89 | 52.12 | |||||||||||||
1985 | 29.83 | a | 32.73 | 39.27 | 47.73 | 56.29 | 62.57 | 70.47 | 70.76 | 65.90 | 57.16 | 50.25 | 36.87 | 51.65 | ||||||||||||
1986 | 33.90 | 31.68 | 39.23 | 47.95 | 55.95 | 63.27 | 68.71 | 68.56 | 61.95 | 55.24 | 45.22 | 38.90 | 50.88 | |||||||||||||
1987 | 32.55 | 30.57 | 39.29 | 46.35 | 54.60 | 64.17 | 70.19 | 68.74 | 64.35 | 53.16 | 45.13 | 38.06 | 50.60 | |||||||||||||
1988 | 30.11 | 32.69 | 38.34 | 45.55 | 53.98 | 62.68 | 70.66 | 70.97 | 62.78 | 51.76 | 47.80 | 36.65 | 50.33 | |||||||||||||
1989 | 36.31 | ----- | z | 36.81 | ----- | z | 55.98 | 66.12 | 68.52 | 69.87 | 64.78 | 54.76 | 43.95 | 26.52 | 52.36 | b | ||||||||||
1990 | 37.58 | 34.30 | 37.66 | 45.52 | 54.05 | 64.82 | 70.47 | 73.34 | 60.38 | 58.39 | 47.57 | 41.15 | 52.10 | |||||||||||||
1991 | 33.58 | 36.30 | 40.77 | 47.92 | 58.27 | 65.85 | 70.20 | a | 69.18 | c | 63.28 | 55.57 | a | 47.07 | 38.93 | b | 52.24 | |||||||||
1992 | 34.08 | f | 34.48 | b | 36.29 | b | 43.31 | a | 53.05 | c | 62.48 | 68.31 | 68.00 | 63.12 | 52.27 | 45.31 | a | 37.60 | b | 51.29 | a | |||||
1993 | 35.77 | c | 26.56 | a | 34.91 | b | 45.97 | 56.52 | 64.80 | 72.60 | 71.02 | 65.48 | a | 54.69 | b | 46.45 | b | 36.15 | d | 50.91 | ||||||
1994 | 25.34 | f | 30.52 | c | 37.26 | 47.22 | 53.07 | a | 65.47 | 75.00 | a | ----- | z | 63.80 | ----- | z | 50.54 | d | 40.22 | h | 52.86 | d | ||||
1995 | 38.86 | j | 35.64 | g | 40.56 | g | 45.86 | a | 53.70 | c | 63.84 | a | ----- | z | ----- | z | 63.43 | ----- | z | ----- | z | 32.09 | i | 56.71 | h | |
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 | 63.86 | h | 55.47 | a | 50.60 | 45.06 | g | 53.03 | j | |
2007 | 36.84 | c | 27.77 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 32.30 | 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 | 31.80 | 31.65 | 37.24 | 45.61 | 54.36 | 63.62 | 70.11 | 69.86 | 63.75 | 54.99 | 46.48 | 36.43 | 50.48 | |||||||||||||
S.D. | 3.99 | 3.45 | 2.12 | 2.01 | 2.00 | 1.80 | 1.67 | 1.54 | 1.71 | 2.13 | 2.49 | 3.80 | 1.13 | |||||||||||||
SKEW | -0.28 | -0.32 | -0.08 | -0.03 | -0.64 | 0.56 | 0.66 | 0.07 | 0.13 | 0.04 | -0.12 | -0.61 | 0.19 | |||||||||||||
MAX | 40.08 | 37.88 | 41.63 | 51.12 | 58.27 | 69.40 | 75.00 | 73.34 | 67.73 | 59.68 | 51.40 | 43.89 | 52.79 | |||||||||||||
MIN | 22.58 | 22.04 | 32.37 | 42.17 | 48.47 | 59.78 | 67.05 | 66.71 | 59.70 | 51.06 | 39.98 | 26.52 | 48.54 | |||||||||||||
YRS | 45 | 46 | 46 | 46 | 47 | 48 | 47 | 46 | 48 | 47 | 48 | 46 | 43 |