YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1932 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 54.43 | a | 41.97 | 34.48 | 43.63 | i | ||
1933 | 34.06 | 32.61 | 42.10 | 45.97 | 53.03 | 66.07 | 79.74 | 74.87 | 69.60 | 57.29 | 41.23 | 34.26 | 52.57 | |||||||||||||
1934 | 33.35 | 41.50 | 48.97 | 56.96 | c | 63.71 | 64.90 | 81.00 | 79.47 | a | 67.13 | 55.60 | a | 43.93 | 38.61 | 56.26 | ||||||||||
1935 | 37.29 | 42.21 | 42.06 | 50.57 | 56.77 | 68.43 | 75.06 | ----- | z | 70.64 | b | 57.87 | a | 37.97 | 37.68 | 52.41 | a | |||||||||
1936 | 34.35 | 41.10 | 45.45 | 53.27 | 61.29 | 71.87 | 79.16 | 79.13 | 65.70 | 52.65 | 42.52 | a | 36.10 | 55.22 | ||||||||||||
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | 34.18 | t | 34.52 | 41.00 | 50.40 | 58.35 | 59.43 | 72.55 | 74.96 | f | 64.40 | 50.81 | 36.70 | 33.61 | 50.18 | b | ||||||||||
1953 | 36.10 | 31.82 | 40.94 | 47.70 | 50.97 | 61.33 | 79.84 | 73.13 | 61.93 | 48.71 | 40.31 | a | 28.55 | 50.11 | ||||||||||||
1954 | 33.74 | 39.93 | 40.26 | 51.37 | 58.47 | a | 63.66 | a | 78.26 | 71.16 | 65.67 | 52.10 | 39.60 | 31.65 | 52.15 | |||||||||||
1955 | 34.97 | 31.50 | 38.65 | 43.47 | 55.45 | 63.17 | 72.19 | 75.81 | 62.60 | 53.35 | 39.53 | 35.58 | 50.52 | |||||||||||||
1956 | 35.32 | 30.62 | 36.61 | 47.37 | 57.10 | 66.40 | 72.84 | 69.10 | 66.40 | 49.74 | 32.23 | 30.55 | 49.52 | |||||||||||||
1957 | 37.45 | 43.71 | 44.61 | 49.50 | 54.61 | 67.38 | a | 74.45 | 73.10 | a | 63.73 | 52.35 | 37.70 | 33.61 | 52.69 | |||||||||||
1958 | 31.16 | 41.79 | 41.90 | 46.70 | 59.19 | 66.07 | 69.97 | a | 77.65 | 66.40 | 54.06 | 37.20 | 31.48 | 51.96 | ||||||||||||
1959 | 30.45 | 34.96 | 39.74 | 50.20 | 55.55 | 67.40 | 78.45 | 74.03 | 61.27 | 49.45 | 38.17 | 36.94 | 51.38 | |||||||||||||
1960 | 31.03 | 34.83 | 44.19 | 49.63 | 55.35 | 68.60 | 74.03 | 75.19 | 67.07 | 52.00 | 38.77 | 27.84 | 51.54 | |||||||||||||
1961 | 31.81 | 37.32 | 42.77 | 48.07 | 56.94 | 70.17 | 78.19 | 76.32 | 61.60 | 49.00 | 37.13 | 32.65 | 51.83 | |||||||||||||
1962 | 32.52 | 39.93 | 36.29 | 50.83 | 53.35 | 64.40 | 73.74 | 75.00 | 68.30 | 51.68 | 41.60 | 34.13 | 51.81 | |||||||||||||
1963 | 28.94 | 41.11 | ----- | z | 45.50 | 58.32 | 62.20 | 75.71 | 77.45 | 68.60 | 56.81 | 42.77 | 28.03 | 53.22 | a | |||||||||||
1964 | 24.94 | 27.90 | 38.68 | 43.63 | 52.60 | a | 64.43 | 77.39 | 75.26 | 63.00 | 55.03 | 36.20 | 32.74 | 49.32 | ||||||||||||
1965 | 33.87 | 34.29 | 38.55 | 50.03 | 55.97 | 61.63 | 74.35 | 74.35 | 62.00 | 53.42 | 46.17 | a | 38.19 | 51.90 | ||||||||||||
1966 | 31.71 | 32.71 | 41.23 | 47.13 | 59.77 | 65.70 | 74.74 | 77.10 | 67.73 | 50.65 | 41.33 | 33.35 | 51.93 | |||||||||||||
1967 | 30.65 | 33.25 | 43.68 | 45.20 | 57.13 | 64.37 | 79.35 | 78.00 | 67.17 | 52.35 | 44.57 | 33.16 | 52.41 | |||||||||||||
1968 | 32.65 | 43.24 | 43.94 | 48.03 | 58.32 | 65.23 | 74.61 | 71.23 | 62.03 | 51.42 | 39.97 | 28.16 | 51.57 | |||||||||||||
1969 | 41.06 | 37.46 | 39.29 | 47.77 | 58.81 | 64.73 | 77.10 | 79.42 | 68.93 | 49.45 | 42.03 | 35.87 | 53.49 | |||||||||||||
1970 | 31.16 | 39.29 | 41.71 | 43.60 | 57.65 | 66.60 | 77.84 | 77.84 | 62.03 | 49.00 | 39.83 | 31.71 | 51.52 | |||||||||||||
1971 | 30.10 | 36.43 | 41.74 | 47.17 | 54.81 | 65.63 | 77.16 | 76.81 | 63.90 | 49.94 | 37.03 | 28.94 | 50.80 | |||||||||||||
1972 | 26.55 | 34.14 | 45.77 | 49.80 | 56.48 | 69.37 | 77.06 | 73.58 | 65.47 | 55.94 | 38.13 | 31.94 | 52.02 | |||||||||||||
1973 | 31.06 | ----- | z | 40.39 | 46.50 | 58.32 | 64.00 | 74.65 | 71.61 | 59.33 | 49.68 | 39.57 | 33.13 | 51.66 | a | |||||||||||
1974 | 35.10 | 35.04 | 46.52 | 48.13 | 59.55 | 68.93 | 76.68 | 70.77 | 70.33 | 56.13 | 40.93 | 32.90 | 53.42 | |||||||||||||
1975 | 32.35 | 35.61 | 42.42 | 44.83 | 54.81 | 64.87 | 78.35 | 70.55 | 67.37 | 50.84 | 37.80 | 35.26 | 51.25 | |||||||||||||
1976 | 32.10 | 43.21 | 42.97 | 47.93 | 61.06 | 65.87 | 78.74 | 71.35 | 67.03 | 54.68 | 41.73 | 31.19 | 53.16 | |||||||||||||
1977 | 36.39 | 35.44 | a | 38.45 | 50.27 | 55.35 | 69.97 | 77.74 | 77.84 | 67.40 | 57.06 | 43.43 | 41.03 | 54.20 | ||||||||||||
1978 | 40.97 | 42.82 | 49.39 | 49.55 | a | 56.90 | 68.03 | 77.32 | 73.77 | 66.47 | 59.48 | 44.87 | 33.77 | 55.28 | ||||||||||||
1979 | 34.03 | 36.39 | 43.55 | 48.87 | 59.23 | 67.53 | 74.03 | 71.48 | 68.90 | 55.94 | 37.07 | 35.61 | 52.72 | |||||||||||||
1980 | 42.32 | 44.76 | 44.19 | 49.40 | 56.00 | 64.47 | 77.26 | 74.65 | 64.47 | 51.90 | 39.47 | 38.13 | 53.92 | |||||||||||||
1981 | 39.39 | 39.93 | 45.29 | 54.57 | 60.97 | 73.37 | 82.16 | 78.39 | 69.27 | 51.58 | 42.73 | 36.94 | 56.21 | |||||||||||||
1982 | 35.61 | 43.25 | 46.29 | 51.23 | 59.84 | 68.00 | 75.97 | 77.16 | 66.33 | 48.33 | a | 42.30 | 37.26 | 54.30 | ||||||||||||
1983 | 36.45 | 42.86 | 47.42 | 47.17 | 56.84 | 64.90 | 76.19 | 74.74 | 72.33 | 57.26 | 44.31 | a | 39.94 | 55.03 | ||||||||||||
1984 | 35.77 | 35.71 | a | 43.23 | 49.27 | 63.81 | 69.90 | 77.45 | 76.65 | 70.23 | 50.16 | 40.00 | 40.03 | 54.35 | ||||||||||||
1985 | 35.74 | 36.82 | 44.06 | 52.93 | 60.33 | a | 69.30 | 77.94 | 74.61 | 61.90 | 56.03 | 41.43 | 35.71 | 53.90 | ||||||||||||
1986 | 39.10 | 42.21 | 48.58 | 51.97 | 59.58 | 72.23 | 75.00 | 78.52 | 62.53 | 52.10 | 43.23 | 36.58 | 55.14 | |||||||||||||
1987 | 33.37 | a | 39.32 | 41.81 | 54.67 | 61.52 | 68.23 | 72.39 | 75.48 | 66.27 | 58.90 | 43.43 | 34.58 | 54.16 | ||||||||||||
1988 | 35.90 | 39.57 | a | 41.03 | 50.30 | 58.73 | a | 69.07 | 79.32 | 74.35 | 63.47 | 59.13 | a | 44.13 | 32.84 | 53.99 | ||||||||||
1989 | 34.10 | 39.00 | 47.39 | 56.00 | 61.29 | 68.90 | 77.77 | 75.39 | 66.97 | 54.16 | 42.77 | 33.16 | 54.74 | |||||||||||||
1990 | 34.97 | 37.39 | 46.55 | 55.80 | 58.74 | 70.27 | 78.00 | 73.81 | 69.43 | 53.94 | 42.03 | 29.97 | 54.24 | |||||||||||||
1991 | 34.52 | 41.36 | 44.00 | 49.37 | 55.94 | 65.40 | 74.19 | 74.87 | 69.20 | 57.29 | 43.23 | 37.52 | 53.91 | |||||||||||||
1992 | 35.29 | 45.03 | 47.84 | 54.10 | 64.13 | 68.53 | 75.68 | 77.48 | 68.30 | 56.03 | 38.93 | 35.87 | 55.60 | |||||||||||||
1993 | 41.68 | 43.07 | 46.06 | 50.23 | 61.61 | 67.03 | 72.48 | 74.55 | 64.73 | 54.94 | 41.70 | 32.39 | 54.21 | |||||||||||||
1994 | 33.03 | 38.07 | 47.87 | 53.33 | 60.23 | 71.83 | 76.77 | 79.16 | 70.07 | 52.71 | 36.38 | a | 37.16 | 54.72 | ||||||||||||
1995 | 42.26 | 45.75 | 45.58 | 51.10 | 58.32 | 65.40 | 75.13 | 79.06 | 72.30 | 52.48 | 45.43 | 36.45 | 55.77 | |||||||||||||
1996 | 36.26 | 45.79 | 45.48 | 53.43 | 63.58 | 68.30 | 81.87 | 79.77 | 68.80 | 54.52 | 44.80 | 37.39 | 56.67 | |||||||||||||
1997 | 40.26 | 39.14 | 45.26 | 53.27 | 66.39 | 67.93 | 73.10 | 77.71 | 72.27 | 53.97 | 43.00 | 34.68 | 55.58 | |||||||||||||
1998 | 37.42 | 41.36 | 43.84 | 46.47 | 56.55 | 64.77 | 78.42 | 79.61 | 68.43 | 51.03 | 40.55 | a | 34.58 | 53.59 | ||||||||||||
1999 | 35.23 | 38.29 | 43.39 | 49.21 | a | 59.55 | 67.10 | 77.06 | 75.48 | 69.57 | 52.26 | 42.40 | 33.16 | 53.56 | ||||||||||||
2000 | 37.32 | 40.93 | 44.61 | 54.13 | 63.19 | 72.83 | 75.84 | 78.39 | 68.00 | 55.94 | 36.00 | 34.84 | 55.17 | |||||||||||||
2001 | 34.90 | 38.75 | 46.58 | 50.23 | 64.35 | 71.67 | 75.61 | 76.61 | 69.30 | 57.26 | 47.23 | 33.77 | 55.52 | |||||||||||||
2002 | 33.74 | 35.96 | 41.81 | 54.17 | 58.16 | 68.73 | 79.81 | 74.84 | 69.30 | 53.58 | 43.10 | 34.58 | 53.98 | |||||||||||||
2003 | 40.87 | 42.64 | 45.45 | 50.20 | 61.61 | 68.53 | 79.94 | 78.32 | 70.47 | 61.23 | 41.70 | 35.68 | 56.39 | |||||||||||||
2004 | 36.65 | 37.55 | 52.36 | i | 54.70 | 61.48 | 67.37 | 76.26 | 75.77 | 66.66 | a | 54.26 | 43.58 | d | 38.87 | a | 55.74 | a | ||||||||
2005 | 41.70 | a | 44.36 | 44.00 | 47.21 | a | 59.16 | 66.12 | e | 76.10 | a | 75.00 | 64.93 | a | 55.80 | a | 43.57 | 34.50 | c | 54.37 | ||||||
2006 | 34.97 | 36.64 | 42.20 | a | 51.34 | a | 60.93 | a | 72.50 | d | 81.97 | 75.90 | 66.17 | 53.68 | 44.30 | 31.52 | 54.34 | |||||||||
2007 | 32.23 | 40.04 | 45.94 | 53.25 | b | 60.63 | a | 67.14 | a | 79.72 | b | 79.72 | b | 68.72 | a | 54.37 | a | 45.13 | 34.07 | a | 55.08 | |||||
2008 | 35.84 | 40.00 | i | 44.00 | 51.43 | 59.32 | 69.80 | 78.26 | 78.81 | 68.87 | 53.13 | a | 45.67 | 38.03 | a | 56.65 | a | |||||||||
2009 | 38.00 | 39.50 | 43.13 | 49.60 | 65.87 | a | 69.00 | 79.53 | a | 74.52 | 70.60 | 52.32 | 42.79 | a | 34.87 | 54.98 | ||||||||||
2010 | 38.23 | 42.93 | 44.33 | a | 49.13 | 57.10 | a | 68.77 | 81.32 | 76.70 | a | 67.50 | 57.00 | 42.13 | 40.37 | a | 55.46 | |||||||||
2011 | 35.52 | 35.89 | 46.37 | a | 55.00 | 58.26 | 67.57 | 79.50 | a | 80.62 | b | 70.17 | a | 55.69 | b | 42.47 | 33.35 | 55.03 | ||||||||
2012 | 36.71 | 38.59 | 43.74 | 52.72 | a | 62.65 | 70.03 | 77.35 | 80.29 | 71.77 | 55.61 | 43.33 | 37.00 | a | 55.82 | |||||||||||
2013 | 33.76 | b | 37.04 | 47.97 | 52.50 | 63.35 | 71.23 | 81.61 | 75.14 | b | 67.80 | 50.74 | 44.23 | 34.24 | b | 54.97 | ||||||||||
2014 | 37.23 | 42.93 | a | 48.47 | a | 53.27 | 62.07 | a | 71.28 | a | 79.03 | a | 75.10 | a | 71.07 | b | 58.16 | 43.37 | 40.58 | 56.88 | ||||||
2015 | 39.35 | 44.36 | 50.00 | a | 52.53 | 58.90 | a | 73.24 | a | 75.27 | a | 77.23 | a | 72.20 | 60.81 | 40.23 | 32.58 | 56.39 | ||||||||
2016 | 37.29 | 40.83 | 47.06 | 54.20 | 60.03 | 74.72 | a | 80.58 | 78.55 | 67.00 | b | 58.77 | 45.47 | 40.10 | 57.05 | |||||||||||
2017 | 40.21 | b | 46.04 | 48.45 | 51.50 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 46.55 | h | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 35.22 | 38.98 | 43.87 | 50.24 | 58.93 | 67.59 | 77.02 | 75.90 | 67.07 | 53.94 | 41.38 | 34.66 | 53.77 | |||||||||||||
S.D. | 3.61 | 4.09 | 3.13 | 3.18 | 3.19 | 3.11 | 2.69 | 2.67 | 3.12 | 3.10 | 2.96 | 3.12 | 1.89 | |||||||||||||
SKEW | -0.15 | -0.35 | -0.26 | -0.10 | 0.03 | -0.06 | -0.18 | -0.38 | -0.39 | 0.21 | -0.55 | -0.08 | -0.40 | |||||||||||||
MAX | 42.32 | 46.04 | 50.00 | 56.96 | 66.39 | 74.72 | 82.16 | 80.62 | 72.33 | 61.23 | 47.23 | 41.03 | 57.05 | |||||||||||||
MIN | 24.94 | 27.90 | 36.29 | 43.47 | 50.97 | 59.43 | 69.97 | 69.10 | 59.33 | 48.33 | 32.23 | 27.84 | 49.32 | |||||||||||||
YRS | 69 | 68 | 68 | 70 | 69 | 69 | 69 | 67 | 69 | 70 | 70 | 70 | 63 |