| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1933 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 47.67 | y | 9999.00 | |
| 1934 | 46.18 | 48.39 | 54.75 | a | 57.70 | 59.78 | a | 62.38 | 65.42 | 68.21 | 61.13 | 56.19 | 49.10 | 41.98 | 55.94 | |||||||||||
| 1935 | 39.32 | 45.50 | 42.39 | 50.82 | 55.08 | 61.95 | 65.58 | a | 66.62 | a | 63.80 | 51.87 | a | 42.40 | 39.40 | 52.06 | ||||||||||
| 1936 | 42.58 | 37.83 | 45.27 | a | 54.20 | 58.71 | 63.00 | a | 65.63 | 67.28 | a | 61.23 | 55.98 | 43.25 | 41.60 | 53.05 | ||||||||||
| 1937 | 30.56 | 39.20 | 47.94 | 48.32 | 56.56 | 62.87 | 67.78 | a | 65.82 | 61.85 | 57.13 | 48.28 | 43.27 | 52.47 | ||||||||||||
| 1938 | 41.97 | 42.93 | 45.02 | 52.17 | 57.48 | 63.08 | 69.79 | 64.19 | 63.88 | 53.85 | 41.83 | 41.16 | 53.11 | |||||||||||||
| 1939 | 41.81 | 39.91 | 47.32 | 54.53 | 57.76 | 59.57 | 67.23 | 67.39 | 63.82 | 54.18 | 48.17 | 46.03 | 53.98 | |||||||||||||
| 1940 | 42.27 | 45.36 | 50.79 | 53.45 | 59.98 | 64.87 | 66.53 | 67.95 | 62.87 | 56.24 | 43.87 | 42.87 | 54.75 | |||||||||||||
| 1941 | 44.06 | 47.64 | 52.03 | 53.00 | 56.95 | 60.68 | 69.42 | 66.55 | 59.08 | 53.29 | 48.87 | 42.27 | 54.49 | |||||||||||||
| 1942 | 39.69 | 42.80 | 46.71 | 52.27 | 55.27 | 59.47 | 67.92 | 68.87 | 62.18 | 54.31 | 46.05 | 40.92 | 53.04 | |||||||||||||
| 1943 | 36.73 | 45.46 | 46.13 | 53.65 | 55.13 | 59.30 | 66.53 | 64.90 | 64.92 | 54.16 | 47.92 | 39.85 | 52.89 | |||||||||||||
| 1944 | 41.23 | 42.86 | 46.77 | 50.48 | 56.73 | 61.22 | 67.37 | 65.50 | 65.28 | 57.47 | 44.05 | 39.31 | 53.19 | |||||||||||||
| 1945 | 42.08 | a | 43.80 | 44.32 | 48.92 | 57.11 | 62.22 | 68.08 | 67.35 | 60.90 | 53.42 | 45.13 | 42.08 | 52.95 | ||||||||||||
| 1946 | 40.68 | 42.88 | 46.16 | 51.03 | 58.65 | 60.20 | 66.82 | 66.52 | 60.57 | 49.05 | 44.00 | 41.74 | 52.36 | |||||||||||||
| 1947 | 37.05 | 46.16 | 49.63 | 53.68 | 60.26 | 60.33 | 65.45 | 64.35 | 63.27 | 54.71 | 46.02 | 42.50 | 53.62 | |||||||||||||
| 1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 64.85 | 64.12 | a | 60.63 | 52.73 | 42.93 | 36.82 | 53.68 | ||||||
| 1949 | 30.84 | 39.69 | a | 45.94 | 52.87 | 58.58 | 61.95 | 65.71 | 65.37 | 61.87 | 48.84 | 50.23 | 39.63 | 51.79 | ||||||||||||
| 1950 | 32.23 | 39.86 | 44.48 | 49.47 | 55.19 | 61.27 | 67.50 | 68.79 | 62.53 | 52.94 | 46.70 | 46.02 | 52.25 | |||||||||||||
| 1951 | 39.16 | 43.05 | 41.58 | 53.72 | 56.25 | a | 64.37 | 67.37 | 65.73 | 63.50 | 52.25 | a | 46.23 | 38.50 | 52.64 | |||||||||||
| 1952 | 37.40 | 42.79 | 44.26 | 53.00 | a | 57.81 | 59.13 | 69.00 | 67.40 | 65.33 | 58.52 | 40.38 | 41.19 | 53.02 | ||||||||||||
| 1953 | 46.55 | 44.09 | 45.03 | 50.40 | 53.16 | 57.45 | a | 66.65 | 66.23 | 64.35 | 54.97 | 48.38 | 43.05 | 53.36 | ||||||||||||
| 1954 | 40.16 | 45.07 | 43.95 | 50.84 | a | 57.18 | a | 57.52 | 63.90 | b | 62.98 | a | 60.45 | 52.31 | 49.50 | 40.90 | 52.06 | |||||||||
| 1955 | 39.16 | 40.71 | 42.05 | a | 45.32 | 53.78 | a | 60.90 | 62.94 | 65.16 | 60.48 | a | 53.18 | 43.30 | 42.29 | 50.77 | ||||||||||
| 1956 | 40.89 | 37.02 | 43.77 | a | 51.58 | 57.63 | 58.98 | 67.89 | 65.82 | 62.48 | 51.05 | 43.17 | 40.76 | 51.75 | ||||||||||||
| 1957 | 33.81 | 42.98 | 46.53 | 52.08 | 58.05 | 62.30 | 64.52 | 63.47 | 65.33 | 52.87 | 44.48 | 43.44 | 52.49 | |||||||||||||
| 1958 | 43.40 | 48.91 | 45.11 | 50.50 | 61.02 | 63.65 | 70.90 | 70.06 | 62.15 | 55.73 | 47.13 | 46.48 | 55.42 | |||||||||||||
| 1959 | 43.28 | a | 42.98 | 46.73 | 52.45 | 54.31 | 62.17 | 68.52 | 65.48 | 59.35 | 54.50 | 45.79 | a | 41.50 | 53.09 | |||||||||||
| 1960 | 39.40 | 43.43 | 46.37 | 50.65 | 54.03 | 63.28 | 69.16 | 64.31 | 62.52 | 54.61 | 45.42 | 40.92 | 52.84 | |||||||||||||
| 1961 | 44.31 | 46.07 | 45.82 | 50.58 | 55.84 | 64.72 | 67.39 | 69.48 | 58.98 | 52.39 | 42.37 | 41.13 | 53.26 | |||||||||||||
| 1962 | 39.37 | 43.05 | 44.19 | 53.18 | 52.50 | 60.61 | c | 66.23 | 65.55 | 62.73 | 53.08 | 47.97 | 42.37 | 52.57 | ||||||||||||
| 1963 | 33.43 | j | 50.14 | 46.26 | 47.73 | 57.02 | 60.10 | 63.11 | 66.45 | 66.53 | 54.71 | 46.08 | 42.31 | 54.59 | ||||||||||||
| 1964 | 40.79 | 42.38 | 44.55 | 48.15 | 53.29 | 59.18 | 65.55 | 64.58 | 59.75 | 56.03 | 42.45 | 40.90 | 51.47 | |||||||||||||
| 1965 | 40.65 | 44.84 | 48.16 | 52.13 | 53.44 | 60.72 | 69.16 | i | 67.00 | 60.05 | 57.31 | 49.07 | 39.47 | 52.07 | ||||||||||||
| 1966 | 40.32 | 42.43 | 46.06 | 52.35 | 56.13 | 61.92 | 65.35 | 65.95 | 63.55 | 53.63 | 46.90 | 42.60 | 53.10 | |||||||||||||
| 1967 | 41.90 | 43.38 | 43.98 | 45.73 | 55.24 | 63.20 | 67.32 | 70.65 | 64.78 | 53.94 | 47.70 | 38.32 | 53.01 | |||||||||||||
| 1968 | 39.73 | 48.50 | 48.76 | 48.40 | 54.56 | 61.42 | 66.89 | 65.05 | 61.78 | 52.42 | 46.92 | 38.55 | 52.75 | |||||||||||||
| 1969 | 34.94 | 39.25 | 47.05 | 49.68 | 58.35 | 62.63 | 64.76 | 63.95 | 61.58 | 51.71 | 45.58 | 43.10 | 51.88 | |||||||||||||
| 1970 | 41.71 | 46.79 | 46.35 | 46.15 | 55.48 | 64.37 | 67.19 | 66.29 | 58.27 | 51.71 | 46.75 | 39.24 | 52.53 | |||||||||||||
| 1971 | 38.92 | 42.04 | 42.11 | 47.78 | 55.34 | 57.78 | 66.63 | 68.85 | 59.67 | 50.53 | 44.28 | 38.69 | 51.05 | |||||||||||||
| 1972 | 38.31 | 43.10 | 48.32 | 47.42 | 56.90 | 61.48 | 68.47 | 68.69 | 59.52 | 52.68 | 46.70 | 35.44 | 52.25 | |||||||||||||
| 1973 | 38.53 | 46.34 | 44.66 | 51.03 | 57.95 | 62.00 | 67.00 | 64.39 | 62.02 | 52.98 | 42.55 | 43.16 | 52.72 | |||||||||||||
| 1974 | 37.06 | 40.95 | 45.03 | 49.22 | 53.71 | 61.87 | 65.42 | 67.19 | 65.70 | 54.00 | 46.88 | 42.05 | 52.42 | |||||||||||||
| 1975 | 42.15 | 41.98 | 43.21 | 45.27 | 54.77 | 60.03 | 66.39 | 63.50 | 63.40 | 52.69 | 43.62 | 41.34 | 51.53 | |||||||||||||
| 1976 | 41.66 | 41.00 | 43.45 | 48.28 | 55.34 | 57.37 | 65.21 | 64.44 | 63.17 | 54.40 | 47.95 | 40.03 | 51.86 | |||||||||||||
| 1977 | 39.13 | 45.27 | 44.16 | 51.95 | 51.95 | 62.70 | 64.73 | 69.71 | 59.55 | 53.48 | 44.27 | 44.06 | 52.58 | |||||||||||||
| 1978 | 43.68 | 45.32 | 50.37 | 48.75 | 53.29 | 62.52 | 66.21 | 65.32 | 58.68 | 54.84 | 40.98 | 36.69 | 52.22 | |||||||||||||
| 1979 | 33.58 | 39.79 | 48.21 | 50.50 | 56.63 | 61.60 | 67.10 | 64.79 | 63.53 | 56.50 | 44.23 | 42.92 | 52.45 | |||||||||||||
| 1980 | 37.50 | 43.90 | 45.71 | 51.53 | 53.81 | 57.40 | 65.81 | 63.48 | 61.80 | 55.63 | 48.27 | 43.92 | 52.40 | |||||||||||||
| 1981 | 43.42 | 44.25 | 47.40 | a | 50.58 | 54.48 | 59.70 | 65.05 | 68.53 | 62.50 | 51.56 | 47.12 | 42.71 | 53.11 | ||||||||||||
| 1982 | 38.16 | 42.48 | 45.11 | 47.30 | 55.11 | 61.78 | 63.85 | 65.66 | 60.35 | 53.63 | 43.40 | 40.26 | 51.43 | |||||||||||||
| 1983 | 42.98 | 45.55 | 48.16 | 50.08 | 57.16 | 58.80 | 62.65 | 65.82 | 59.63 | 54.05 | 46.53 | 37.63 | 52.42 | |||||||||||||
| 1984 | 41.89 | 44.17 | 48.77 | 47.65 | 53.85 | 58.08 | 66.66 | 66.26 | 61.38 | 50.55 | 44.45 | 38.08 | 51.82 | |||||||||||||
| 1985 | 36.23 | 39.95 | 42.98 | 52.60 | 55.44 | 62.45 | 69.47 | 64.87 | 57.43 | 51.94 | 38.32 | 34.94 | 50.55 | |||||||||||||
| 1986 | 43.55 | 44.36 | 50.71 | 49.05 | 55.48 | 64.43 | 63.42 | 69.58 | 57.85 | 55.66 | 46.22 | 40.84 | 53.43 | |||||||||||||
| 1987 | 40.55 | 45.07 | 47.65 | 54.17 | 57.98 | 63.60 | 64.21 | 66.82 | 62.12 | 57.44 | 46.82 | 39.16 | 53.80 | |||||||||||||
| 1988 | 40.19 | 44.52 | 46.68 | 51.68 | 54.08 | 60.22 | 67.18 | 65.90 | 61.50 | 57.66 | 45.15 | 41.32 | 53.01 | |||||||||||||
| 1989 | 40.52 | 36.05 | 45.65 | 54.47 | 54.97 | 62.00 | 63.10 | 64.21 | 63.08 | 52.82 | 46.73 | 40.40 | 52.00 | |||||||||||||
| 1990 | 42.27 | 39.48 | 49.00 | 53.17 | 54.63 | 60.98 | 68.47 | 67.42 | 64.25 | 52.35 | 45.85 | 33.66 | 52.63 | |||||||||||||
| 1991 | 38.74 | 48.50 | 44.47 | 48.70 | 52.08 | 58.10 | 68.23 | 67.71 | 64.58 | 55.13 | 48.12 | 41.40 | 52.98 | |||||||||||||
| 1992 | 43.66 | 48.79 | 51.13 | 53.80 | 60.71 | 64.77 | 67.21 | 68.15 | 61.85 | 55.55 | 46.82 | 39.10 | 55.13 | |||||||||||||
| 1993 | 37.21 | 41.98 | 49.27 | 50.17 | 58.15 | 59.87 | 61.29 | 64.89 | 62.45 | 56.81 | 40.63 | 38.94 | 51.80 | |||||||||||||
| 1994 | 44.00 | 41.73 | 48.66 | 51.37 | 57.37 | 58.87 | 67.32 | 65.10 | 64.12 | 52.77 | 40.62 | 40.44 | 52.70 | |||||||||||||
| 1995 | 44.61 | 47.79 | 47.42 | 49.20 | 57.08 | 60.53 | 67.29 | 64.11 | 64.88 | 53.53 | 49.57 | 43.60 | 54.13 | |||||||||||||
| 1996 | 42.00 | 44.05 | 48.27 | 51.90 | 53.69 | 60.13 | 69.06 | 67.06 | 59.57 | 53.00 | 47.05 | 42.48 | 53.19 | |||||||||||||
| 1997 | 41.53 | 43.89 | 46.45 | 49.55 | 59.65 | 59.75 | 65.79 | 67.84 | 62.50 | 52.37 | 49.03 | 40.31 | 53.22 | |||||||||||||
| 1998 | 44.15 | 44.80 | 46.92 | 50.35 | 53.39 | 60.43 | 69.02 | 67.77 | 64.18 | 53.79 | 46.52 | 38.53 | 53.32 | |||||||||||||
| 1999 | 41.77 | 42.07 | 44.27 | 48.63 | 52.44 | 59.00 | 65.03 | 66.94 | 62.30 | 54.34 | 49.03 | 40.53 | 52.20 | |||||||||||||
| 2000 | 39.66 | 44.28 | 44.76 | 52.77 | 55.40 | 62.62 | 65.08 | 65.37 | 61.97 | 54.00 | 42.05 | 41.31 | 52.44 | |||||||||||||
| 2001 | 42.21 | 42.20 | 47.45 | 47.70 | 57.55 | 58.38 | 65.18 | 66.47 | a | 62.53 | 53.69 | 48.03 | 41.11 | 52.71 | ||||||||||||
| 2002 | 40.32 | 44.00 | 43.35 | 50.43 | 53.74 | 61.50 | 68.34 | 66.50 | 62.97 | 52.39 | 46.57 | 42.18 | 52.69 | |||||||||||||
| 2003 | 44.45 | 43.62 | 48.29 | 48.20 | 55.21 | 64.22 | 69.23 | 68.32 | 63.88 | 57.10 | 43.02 | 41.48 | 53.92 | |||||||||||||
| 2004 | 40.89 | 44.31 | 50.16 | 53.02 | 56.58 | 62.03 | 69.29 | 69.29 | 60.38 | 53.95 | 45.05 | 41.92 | 53.91 | |||||||||||||
| 2005 | 41.60 | 44.20 | 48.98 | 50.23 | 57.50 | 58.88 | 68.29 | 68.77 | 60.27 | 54.87 | 42.63 | 39.66 | 52.99 | |||||||||||||
| 2006 | 42.61 | 42.70 | 44.02 | 50.68 | 56.87 | 63.32 | 68.94 | 66.34 | 62.80 | 52.39 | 45.23 | 41.23 | 53.09 | |||||||||||||
| 2007 | 37.61 | 43.59 | 48.73 | 49.85 | ----- | z | 60.48 | 68.44 | 66.08 | 60.57 | 51.56 | 44.52 | 40.02 | 51.95 | ||||||||||||
| 2008 | 37.94 | 42.12 | 43.31 | 46.45 | 55.52 | 57.92 | 66.55 | 66.90 | 61.55 | 53.13 | 47.87 | 38.19 | 51.45 | |||||||||||||
| 2009 | 39.40 | 42.95 | 42.89 | 48.17 | 56.66 | 62.60 | 69.71 | 67.15 | 62.63 | 51.92 | 44.87 | 36.08 | 52.08 | |||||||||||||
| 2010 | 45.58 | 46.11 | 45.63 | 48.48 | 52.76 | 58.60 | 66.48 | 65.98 | 61.52 | 54.00 | 44.40 | 41.69 | 52.60 | |||||||||||||
| 2011 | 42.31 | 40.32 | 44.65 | 46.41 | a | 51.63 | 58.87 | 63.24 | 66.82 | 65.12 | 54.06 | 44.98 | 37.65 | 51.34 | ||||||||||||
| 2012 | 41.68 | 43.38 | 43.03 | 51.27 | 54.58 | 58.43 | 65.50 | 68.02 | 62.83 | 53.61 | 47.40 | 40.94 | 52.56 | |||||||||||||
| 2013 | 37.11 | 42.77 | 47.44 | 56.00 | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 42.44 | ||||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 40.35 | 43.47 | 46.32 | 50.53 | 55.92 | 61.01 | 66.59 | 66.44 | 62.11 | 53.83 | 45.55 | 40.77 | 52.75 | |||||||||||||
| S.D. | 3.25 | 2.75 | 2.54 | 2.48 | 2.18 | 2.03 | 1.96 | 1.75 | 1.99 | 1.93 | 2.51 | 2.37 | 0.98 | |||||||||||||
| SKEW | -0.85 | -0.06 | 0.57 | 0.02 | 0.21 | 0.02 | -0.28 | 0.34 | -0.14 | 0.12 | -0.45 | -0.40 | 0.65 | |||||||||||||
| MAX | 46.55 | 50.14 | 54.75 | 57.70 | 61.02 | 64.87 | 70.90 | 70.65 | 66.53 | 58.52 | 50.23 | 46.48 | 55.94 | |||||||||||||
| MIN | 30.56 | 36.05 | 41.58 | 45.27 | 51.63 | 57.37 | 61.29 | 62.98 | 57.43 | 48.84 | 38.32 | 33.66 | 50.55 | |||||||||||||
| NO YRS | 78 | 79 | 79 | 78 | 77 | 78 | 78 | 79 | 79 | 79 | 79 | 79 | 75 | |||||||||||||