YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1943 | ----- | z | ----- | z | 40.58 | 48.10 | 53.87 | 63.10 | 67.00 | 67.65 | 58.57 | 47.23 | 35.07 | 30.57 | a | 51.17 | b | |||||||||
1944 | 24.74 | 34.41 | 35.26 | 42.93 | 53.39 | 61.47 | 66.23 | 63.93 | a | 58.34 | a | 51.00 | 36.90 | 27.10 | a | 46.31 | ||||||||||
1945 | ----- | z | 32.75 | 36.03 | 43.63 | 53.00 | a | 59.27 | 67.37 | a | 62.10 | 58.00 | a | 47.60 | a | 32.87 | 26.70 | a | 47.21 | a | ||||||
1946 | 26.00 | 26.04 | 37.03 | 47.83 | 52.07 | b | 63.55 | a | ----- | z | 68.87 | 64.60 | 49.80 | a | 32.93 | a | 33.23 | 45.63 | a | |||||||
1947 | 27.19 | 30.82 | 37.26 | 43.47 | 55.77 | 60.77 | 68.71 | 68.71 | 58.73 | 47.45 | 35.17 | a | 27.58 | 46.80 | ||||||||||||
1948 | 25.47 | a | 31.93 | b | 35.50 | e | 47.80 | 55.42 | 65.23 | 67.52 | 66.52 | 59.90 | 49.61 | 28.23 | 33.26 | 47.20 | ||||||||||
1949 | 27.45 | 31.18 | 38.00 | 45.63 | 53.32 | 63.43 | 68.48 | 65.83 | a | 62.20 | 46.94 | 35.57 | 28.55 | 47.22 | ||||||||||||
1950 | 30.06 | 35.14 | 39.32 | 47.97 | 52.10 | 65.33 | 66.19 | 63.97 | 58.17 | a | 52.77 | 33.57 | 28.84 | 47.79 | ||||||||||||
1951 | 25.80 | a | 31.32 | 38.13 | 45.00 | 54.74 | 61.77 | 71.39 | 68.19 | 60.47 | 51.16 | 35.27 | 32.45 | 47.97 | ||||||||||||
1952 | 33.45 | 32.03 | 35.00 | 47.10 | a | 55.29 | 66.60 | 67.42 | 67.58 | 60.68 | b | 46.74 | 33.80 | 27.03 | 47.73 | |||||||||||
1953 | 31.71 | 31.46 | 42.35 | 48.77 | 50.61 | 66.93 | 70.71 | 66.71 | 58.83 | 47.94 | 35.53 | 22.35 | 47.83 | |||||||||||||
1954 | 29.42 | 34.71 | 39.77 | 51.10 | 57.43 | a | 65.20 | 69.68 | 67.06 | 64.87 | 53.10 | 36.00 | 28.26 | 49.72 | ||||||||||||
1955 | 28.97 | 27.75 | 39.55 | 46.90 | a | 54.81 | 63.37 | 68.32 | 67.90 | 59.33 | 49.35 | 36.33 | 32.16 | 47.90 | ||||||||||||
1956 | 33.45 | 29.10 | 38.06 | 44.63 | 58.03 | 68.57 | 68.42 | 64.55 | 59.37 | 50.10 | 29.10 | 29.00 | 47.70 | |||||||||||||
1957 | 35.81 | 40.89 | 42.68 | 45.80 | 51.73 | a | 67.17 | 69.90 | 66.52 | 56.93 | 48.97 | 34.27 | 29.06 | 49.14 | ||||||||||||
1958 | 27.00 | 34.36 | 38.23 | a | 45.43 | b | 56.87 | 67.26 | g | 67.45 | 66.71 | 61.47 | 50.90 | 35.59 | c | 27.90 | 46.54 | a | ||||||||
1959 | 28.13 | h | 31.74 | e | 31.83 | b | 48.60 | 55.32 | 67.10 | a | 68.55 | 66.13 | 59.55 | a | 47.29 | 33.34 | a | 31.13 | 49.14 | a | ||||||
1960 | 26.65 | 28.97 | 39.58 | 45.26 | c | 52.20 | f | 64.29 | f | ----- | z | 64.65 | h | 58.11 | b | 44.79 | g | 32.73 | 23.97 | 36.47 | e | |||||
1961 | 25.74 | 28.04 | b | 36.07 | d | 41.53 | k | 51.21 | b | 61.10 | 65.39 | 64.45 | 58.40 | 44.10 | 32.23 | 30.48 | 45.20 | a | ||||||||
1962 | 23.87 | 34.25 | 31.62 | b | 46.21 | a | 51.48 | b | 59.70 | 63.26 | 63.87 | a | 57.07 | 47.81 | 36.27 | 27.87 | 45.27 | |||||||||
1963 | 21.52 | 28.64 | 34.58 | 44.70 | 53.77 | 60.17 | a | ----- | z | 62.90 | a | 57.63 | 47.80 | a | ----- | z | 23.06 | 43.48 | b | |||||||
1964 | 20.10 | 19.97 | 31.55 | 40.33 | ----- | z | 60.37 | 65.81 | 64.55 | ----- | z | 44.13 | a | 31.33 | 26.90 | 40.50 | b | |||||||||
1965 | 31.07 | a | 27.71 | 33.19 | 43.63 | 51.77 | 58.23 | 66.90 | 63.10 | 55.37 | 45.65 | 41.48 | a | 31.90 | 45.83 | |||||||||||
1966 | 26.32 | 26.39 | 38.26 | 46.90 | 57.50 | a | 64.68 | b | 70.37 | a | 65.68 | 59.97 | 45.71 | c | 38.57 | 26.68 | 47.25 | |||||||||
1967 | 23.68 | 31.07 | a | 40.20 | a | 46.41 | a | 52.29 | 63.52 | a | 70.30 | a | 66.29 | 60.43 | 47.84 | 38.20 | 28.73 | a | 47.41 | |||||||
1968 | 30.93 | b | 36.17 | 37.76 | b | 42.62 | a | 53.90 | a | 65.07 | 69.93 | b | 65.71 | 57.90 | 49.74 | 38.10 | 25.26 | 47.76 | ||||||||
1969 | 33.47 | a | 32.18 | 32.65 | 48.30 | 56.23 | 65.30 | 74.35 | 72.68 | 62.86 | h | 52.68 | 38.23 | 33.52 | 49.05 | a | ||||||||||
1970 | 29.26 | 35.54 | 38.45 | 45.47 | 55.39 | 64.17 | 69.84 | 69.03 | 62.40 | 45.61 | 35.87 | 33.71 | 48.73 | |||||||||||||
1971 | 30.74 | 32.82 | 40.97 | 47.80 | 55.65 | 67.00 | 71.71 | 66.58 | 60.80 | 49.68 | 40.30 | 33.13 | 49.76 | |||||||||||||
1972 | 31.42 | 32.86 | 44.90 | 47.50 | 55.74 | 64.53 | 69.90 | 66.74 | 61.53 | 53.13 | 35.33 | 31.16 | 49.56 | |||||||||||||
1973 | ----- | z | 33.68 | 37.97 | 41.67 | 55.52 | ----- | z | 69.71 | ----- | z | 62.20 | 47.74 | 36.27 | 29.10 | 45.98 | c | |||||||||
1974 | 30.48 | 28.39 | 43.87 | 49.30 | 58.68 | 67.47 | 68.19 | 66.26 | 59.53 | 52.19 | 38.10 | 28.16 | 49.22 | |||||||||||||
1975 | 28.84 | 33.68 | 37.68 | 42.40 | 51.84 | 63.73 | 68.16 | 67.74 | 60.43 | 48.23 | 34.43 | 29.29 | 47.20 | |||||||||||||
1976 | 27.68 | 38.07 | 40.63 | a | 48.47 | 55.65 | 65.11 | b | 67.90 | 66.68 | 61.23 | 45.55 | 31.90 | 26.67 | a | 47.96 | ||||||||||
1977 | 29.77 | a | 31.68 | 35.90 | 48.73 | 55.45 | 66.23 | 69.71 | 70.39 | 64.97 | 51.81 | 37.83 | 34.03 | 49.71 | ||||||||||||
1978 | 31.87 | 34.07 | 42.58 | 48.50 | 57.45 | 68.77 | 72.19 | 67.19 | 60.76 | a | 50.00 | 42.73 | 30.68 | 50.57 | ||||||||||||
1979 | 31.42 | 33.57 | 38.39 | 47.00 | a | 53.90 | 63.60 | 70.84 | 64.81 | 60.20 | 48.84 | 33.67 | 29.27 | a | 47.96 | |||||||||||
1980 | 33.74 | 36.31 | 37.67 | a | 44.13 | 54.68 | 66.47 | 72.29 | 68.48 | ----- | z | 48.32 | 34.07 | a | ----- | z | 49.62 | b | ||||||||
1981 | 31.77 | 34.04 | 39.58 | 49.29 | f | 56.14 | j | 64.90 | 68.00 | k | 63.37 | a | 59.30 | 46.73 | a | 32.81 | d | 24.65 | 44.13 | c | ||||||
1982 | 20.70 | a | 30.00 | d | ----- | z | 48.18 | b | 53.19 | 63.64 | b | 68.03 | ----- | z | 62.77 | 40.00 | b | 34.24 | a | 27.26 | d | 44.80 | b | |||
1983 | 24.27 | e | 32.60 | c | 37.74 | d | 42.12 | d | 51.10 | a | 59.17 | 64.44 | d | 66.74 | 62.03 | a | 49.27 | a | ----- | z | 26.62 | b | 46.92 | a | ||
1984 | 25.44 | d | 27.64 | a | 38.32 | c | 45.23 | d | 56.41 | b | 61.37 | 62.90 | a | ----- | z | 59.78 | c | 46.59 | b | 33.76 | a | 27.24 | b | 44.06 | a | |
1985 | 23.25 | c | 28.41 | a | 37.00 | b | 48.04 | b | 56.04 | g | ----- | z | 64.63 | a | 63.87 | 55.10 | 46.29 | 35.93 | a | 25.00 | 42.75 | b | ||||
1986 | ----- | z | 37.63 | a | 41.57 | a | 49.45 | a | 55.79 | b | 63.20 | 64.70 | a | 61.24 | b | 57.23 | 46.57 | a | 35.38 | a | 28.70 | a | 49.22 | a | ||
1987 | 21.68 | 29.70 | a | 35.94 | 44.23 | 54.14 | b | 62.53 | 66.77 | a | 65.81 | 57.33 | 50.61 | 34.87 | 25.52 | 45.76 | ||||||||||
1988 | 26.77 | 32.41 | 32.97 | 42.38 | a | 53.16 | 63.40 | 65.23 | 62.81 | 56.83 | a | 50.80 | a | 35.17 | 27.87 | 45.82 | ||||||||||
1989 | 24.13 | a | 35.48 | a | 41.27 | a | 48.93 | a | 56.68 | 64.47 | 68.84 | 66.52 | 59.73 | 45.39 | 35.82 | b | 24.23 | 47.62 | ||||||||
1990 | 26.16 | 27.48 | a | 40.87 | a | 50.83 | a | 55.23 | 69.97 | 67.33 | a | 63.90 | 61.59 | c | 49.67 | a | 38.40 | 29.90 | a | 48.44 | ||||||
1991 | 31.48 | 37.70 | a | 38.32 | c | 45.87 | 54.55 | 62.23 | 66.58 | 67.06 | 58.03 | 48.81 | 34.93 | 33.87 | a | 48.29 | ||||||||||
1992 | 29.97 | 34.83 | 40.33 | a | 48.17 | 56.37 | a | 61.20 | 67.74 | 65.87 | 61.27 | 49.57 | a | 32.70 | 30.52 | 48.21 | ||||||||||
1993 | 36.19 | 36.48 | a | 40.29 | 43.10 | a | 57.03 | 65.33 | 69.68 | 67.45 | 60.23 | 47.68 | 35.60 | 30.70 | a | 49.15 | ||||||||||
1994 | 28.19 | 33.39 | 41.00 | 47.20 | 56.65 | 70.83 | 71.90 | 70.87 | a | 62.90 | 49.90 | 39.13 | 34.19 | 50.51 | ||||||||||||
1995 | 31.42 | 39.89 | ----- | z | 44.11 | b | 53.90 | 62.80 | 68.32 | 70.30 | a | 61.97 | 48.23 | 40.30 | 32.94 | 50.38 | a | |||||||||
1996 | 30.37 | a | 39.66 | 38.13 | 47.27 | 58.71 | 67.52 | a | 70.45 | 66.68 | 59.73 | 50.13 | a | 37.67 | 28.71 | 49.58 | ||||||||||
1997 | 31.35 | 35.00 | 42.68 | 45.87 | 59.03 | 63.93 | a | 68.69 | e | 67.71 | 66.21 | a | 48.13 | 38.27 | 29.45 | b | 49.69 | |||||||||
1998 | 30.74 | 33.32 | 38.32 | 41.97 | 55.16 | 61.66 | a | 70.90 | a | 68.26 | 65.70 | 52.58 | 38.79 | a | 32.35 | 49.15 | ||||||||||
1999 | 30.93 | b | 34.93 | 41.52 | 45.37 | 56.48 | 63.80 | 68.77 | 68.67 | a | 61.73 | 46.97 | 38.60 | 29.94 | 48.98 | |||||||||||
2000 | 33.87 | 36.83 | 40.48 | b | 50.69 | a | 61.10 | a | 67.27 | 70.58 | 67.55 | 63.23 | 50.81 | 35.00 | 30.93 | b | 50.69 | |||||||||
2001 | 29.32 | 34.96 | 41.26 | 48.80 | 59.16 | 66.76 | a | 69.35 | ----- | z | 62.87 | 51.77 | 44.03 | 28.10 | a | 48.76 | a | |||||||||
2002 | 31.06 | 34.00 | 41.03 | a | 54.13 | 55.94 | 66.03 | 65.72 | b | 67.13 | a | 62.53 | ----- | z | 39.61 | b | 29.65 | e | 49.71 | a | ||||||
2003 | ----- | z | ----- | z | 41.60 | a | ----- | z | 57.74 | ----- | z | ----- | z | 64.92 | s | 63.27 | 53.65 | 38.63 | 28.83 | a | 47.29 | f | ||||
2004 | 35.10 | a | 31.93 | 45.17 | b | ----- | z | 58.35 | ----- | z | 68.45 | 66.38 | b | 60.13 | 53.29 | 38.93 | a | 30.77 | a | 48.85 | b | |||||
2005 | 36.50 | a | 40.37 | a | 40.68 | 48.10 | 57.71 | 65.37 | 71.35 | 69.11 | c | 65.90 | 52.90 | 39.93 | 32.90 | 51.74 | ||||||||||
2006 | 33.26 | 38.04 | c | ----- | z | 55.69 | a | 64.42 | 71.27 | 73.52 | 68.61 | 61.46 | b | 51.93 | a | 41.97 | a | 31.48 | b | 53.79 | a | |||||
2007 | 33.13 | 37.04 | b | 44.10 | b | 50.44 | c | 60.35 | 68.50 | 71.97 | 73.06 | 66.93 | 54.61 | 43.80 | 33.37 | a | 53.11 | |||||||||
2008 | 33.58 | 39.03 | 43.63 | a | 50.34 | a | 59.81 | 71.67 | 69.26 | 69.48 | 61.83 | 50.84 | 39.59 | a | 35.84 | 52.08 | ||||||||||
2009 | 33.68 | 36.82 | 45.10 | 50.73 | 63.87 | 68.50 | 74.87 | 71.55 | 63.67 | 52.29 | 40.24 | a | 32.48 | b | 52.82 | |||||||||||
2010 | 29.97 | b | 37.00 | 40.58 | 50.83 | 64.23 | a | 71.73 | 72.68 | 72.29 | 67.20 | 55.71 | 37.23 | 35.55 | 52.92 | |||||||||||
2011 | 29.35 | ----- | z | 47.65 | 55.33 | 59.84 | 72.70 | 75.68 | 74.00 | a | ----- | z | 51.84 | 40.20 | 30.45 | 53.70 | b | |||||||||
2012 | 34.45 | 37.38 | 42.84 | ----- | z | ----- | z | 71.40 | ----- | z | 72.90 | 64.17 | ----- | z | ----- | z | ----- | z | 53.86 | f | ||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 29.27 | 33.19 | 39.09 | 46.91 | 55.82 | 64.96 | 68.90 | 67.05 | 60.78 | 49.22 | 36.40 | 29.54 | 48.68 | |||||||||||||
S.D. | 3.96 | 3.96 | 3.44 | 3.17 | 3.07 | 3.36 | 2.68 | 2.75 | 2.74 | 2.85 | 3.22 | 3.04 | 1.91 | |||||||||||||
SKEW | -0.36 | -0.48 | -0.16 | 0.42 | 0.76 | 0.32 | 0.15 | 0.42 | 0.33 | -0.28 | 0.11 | -0.13 | 0.59 | |||||||||||||
MAX | 36.50 | 40.89 | 47.65 | 55.69 | 64.42 | 72.70 | 75.68 | 74.00 | 67.20 | 55.71 | 44.03 | 35.84 | 53.11 | |||||||||||||
MIN | 20.10 | 19.97 | 31.55 | 40.33 | 50.61 | 58.23 | 62.90 | 61.24 | 55.10 | 40.00 | 28.23 | 22.35 | 45.27 | |||||||||||||
YRS | 64 | 67 | 67 | 65 | 65 | 64 | 64 | 64 | 66 | 67 | 67 | 68 | 44 |