| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 58.41 | b | 59.98 | 57.14 | a | 51.72 | a | 44.10 | 39.03 | b | 51.73 | |||
| 1949 | 33.07 | a | 40.46 | a | 46.10 | 49.45 | a | 54.57 | b | 54.37 | d | 56.95 | 59.57 | a | 58.17 | a | 48.23 | 52.00 | 43.12 | a | 49.67 | |||||
| 1950 | 34.13 | 42.93 | a | 44.00 | 47.78 | 50.15 | e | 58.45 | a | 58.12 | b | 60.52 | c | 56.32 | 51.62 | a | 48.22 | 50.13 | 50.20 | |||||||
| 1951 | 41.28 | a | 42.50 | 37.29 | j | 48.50 | 52.12 | a | 55.10 | 59.03 | 57.21 | 56.68 | 53.13 | a | 47.85 | 40.32 | 50.34 | |||||||||
| 1952 | 39.16 | 42.43 | 43.20 | a | 47.41 | a | 51.62 | a | 54.72 | a | 58.84 | 59.90 | 56.75 | b | 54.81 | 44.02 | d | 43.94 | 49.73 | |||||||
| 1953 | 46.28 | k | 43.27 | b | 45.67 | b | 47.59 | b | 52.21 | ----- | z | 58.30 | a | 60.65 | 58.20 | b | 53.57 | a | 49.30 | 44.84 | 51.36 | |||||
| 1954 | 41.19 | b | 45.62 | 42.55 | 46.38 | 51.65 | 54.43 | o | 55.83 | a | 59.11 | 57.29 | a | 52.15 | 51.03 | 44.10 | 49.72 | |||||||||
| 1955 | 41.50 | 41.17 | a | 41.13 | 44.12 | 49.69 | b | 56.50 | n | 57.77 | 55.13 | 55.22 | 52.65 | 44.24 | a | 42.63 | 47.75 | |||||||||
| 1956 | 42.81 | 38.66 | 43.63 | a | 48.22 | a | 53.08 | 54.90 | 58.68 | a | 59.47 | a | 57.33 | 51.19 | 45.53 | 43.87 | 49.78 | |||||||||
| 1957 | 36.73 | 44.07 | 46.55 | 48.70 | 53.32 | 56.60 | a | 57.52 | 57.56 | 61.05 | 52.63 | a | 46.42 | 45.33 | a | 50.54 | ||||||||||
| 1958 | 47.34 | 49.95 | 43.73 | 49.52 | 54.94 | 60.43 | 61.40 | 58.84 | 58.07 | 53.74 | 46.80 | 48.55 | 52.77 | |||||||||||||
| 1959 | 44.97 | 43.50 | 45.50 | 48.50 | 52.47 | 56.65 | 58.05 | 56.24 | 55.92 | 53.55 | 47.02 | 43.53 | 50.49 | |||||||||||||
| 1960 | 40.76 | 44.12 | 45.24 | 48.95 | 50.89 | 54.50 | 55.34 | 58.48 | 56.58 | 53.52 | 47.25 | 44.10 | 49.98 | |||||||||||||
| 1961 | 47.89 | 46.86 | 45.98 | 47.25 | 52.00 | 56.93 | 60.60 | 59.27 | 54.33 | 51.02 | 43.83 | 43.29 | 50.77 | |||||||||||||
| 1962 | 40.45 | 44.43 | 43.34 | 48.82 | 49.71 | 53.42 | 55.92 | 59.24 | 57.05 | 53.66 | 49.23 | 45.06 | 50.03 | |||||||||||||
| 1963 | 37.73 | 51.00 | 44.52 | 47.48 | 51.40 | 54.60 | 57.48 | 58.63 | 59.77 | 54.58 | 48.15 | 46.19 | 50.96 | |||||||||||||
| 1964 | 44.00 | 41.71 | 43.95 | 45.18 | 49.11 | 54.60 | 57.82 | 58.03 | 56.33 | 54.00 | 44.67 | 41.66 | 49.26 | |||||||||||||
| 1965 | 43.90 | 44.11 | 46.13 | 48.38 | 48.55 | 52.73 | 58.38 | a | 60.82 | 55.52 | 55.05 | a | 49.32 | 39.93 | c | 50.24 | ||||||||||
| 1966 | 43.53 | 43.75 | 43.19 | 48.87 | 49.58 | 56.12 | 56.52 | 57.52 | 59.32 | 51.98 | 48.03 | 46.63 | 50.42 | |||||||||||||
| 1967 | 45.02 | 43.82 | 43.58 | 43.72 | 51.85 | 58.13 | 58.48 | 61.37 | 61.18 | 54.08 | 48.40 | 42.31 | 51.00 | |||||||||||||
| 1968 | 42.13 | 49.19 | 48.60 | 45.32 | 52.15 | 55.28 | 58.79 | 58.63 | 58.10 | 51.08 | 48.03 | 41.05 | 50.70 | |||||||||||||
| 1969 | 37.08 | 41.09 | 44.77 | 47.82 | 53.67 | a | 59.72 | 57.03 | 57.13 | 56.90 | 51.29 | 46.58 | 44.65 | 49.81 | ||||||||||||
| 1970 | 43.34 | 47.57 | 45.05 | 45.35 | 51.00 | 56.72 | 56.34 | 56.71 | 53.65 | 50.79 | 46.95 | 40.26 | 49.48 | |||||||||||||
| 1971 | 41.24 | 42.66 | 42.26 | 47.35 | 51.37 | 53.75 | 56.97 | 60.69 | 55.43 | 49.58 | 45.22 | 40.94 | 48.95 | |||||||||||||
| 1972 | 39.77 | 43.86 | 47.27 | 45.32 | 53.47 | 56.45 | 59.95 | 59.85 | 55.57 | 51.16 | 48.62 | 39.90 | 50.10 | |||||||||||||
| 1973 | 41.21 | 46.30 | 45.53 | 48.30 | 52.82 | 57.47 | 58.65 | 56.42 | 59.02 | 52.10 | 44.80 | 46.37 | 50.75 | |||||||||||||
| 1974 | 40.63 | 43.05 | 45.74 | 49.15 | 50.74 | 53.72 | 58.15 | 59.97 | 59.28 | 50.69 | 48.15 | 45.40 | 50.39 | |||||||||||||
| 1975 | 43.79 | 43.52 | 43.95 | 44.15 | 51.65 | 54.42 | 58.42 | 56.76 | 57.47 | 51.68 | 45.77 | 44.48 | 49.67 | |||||||||||||
| 1976 | 43.79 | 43.64 | 43.13 | 47.33 | 51.98 | 53.52 | 58.50 | 59.42 | 59.47 | 54.10 | 48.58 | 43.53 | 50.58 | |||||||||||||
| 1977 | 42.84 | 47.43 | 44.73 | 48.23 | 50.79 | 56.62 | 57.58 | 61.11 | 56.82 | 51.23 | 45.05 | 46.23 | 50.72 | |||||||||||||
| 1978 | 45.68 | 47.27 | 47.56 | 49.02 | 51.66 | 58.90 | 59.77 | 60.71 | 58.73 | 55.03 | 41.93 | 38.39 | 51.22 | |||||||||||||
| 1979 | 37.31 | 43.04 | 48.42 | 49.30 | ----- | z | 53.90 | 60.19 | 59.69 | 61.83 | 55.58 | 46.35 | 46.87 | 51.13 | ||||||||||||
| 1980 | 39.89 | 46.86 | 45.08 | 49.08 | 51.39 | 54.55 | 58.77 | 57.39 | 58.00 | 53.24 | 47.93 | 46.27 | 50.71 | |||||||||||||
| 1981 | 46.82 | 46.16 | 47.23 | 49.20 | 52.21 | 56.70 | 59.71 | 60.73 | 58.27 | 51.95 | 48.10 | 45.29 | 51.86 | |||||||||||||
| 1982 | 41.15 | 44.34 | 44.47 | 45.62 | 50.69 | 55.82 | 57.44 | 59.08 | 58.53 | 54.69 | 46.15 | 43.95 | 50.16 | |||||||||||||
| 1983 | 47.56 | 49.05 | 49.89 | 49.08 | 54.03 | 57.05 | 60.95 | 60.31 | 56.75 | 51.10 | 49.20 | 39.05 | 52.00 | |||||||||||||
| 1984 | 44.89 | 48.05 | 48.92 | 47.38 | 51.53 | 54.03 | 56.32 | 58.29 | 58.38 | 51.02 | 47.35 | 40.40 | 50.55 | |||||||||||||
| 1985 | 41.77 | 40.77 | 42.73 | 48.17 | 52.56 | 55.22 | 58.68 | 58.82 | 56.10 | 50.53 | 39.83 | 40.06 | 48.77 | |||||||||||||
| 1986 | 47.23 | 45.25 | 49.55 | 46.50 | 52.45 | 57.42 | 57.45 | 59.16 | 55.03 | 53.37 | 47.55 | 45.02 | 51.33 | |||||||||||||
| 1987 | 43.89 | 46.59 | 47.92 | 49.42 | 53.31 | 55.47 | 57.66 | 58.24 | 56.20 | 53.10 | a | 49.05 | 40.71 | 50.96 | ||||||||||||
| 1988 | 42.61 | 44.84 | a | 44.87 | 48.10 | 51.69 | 54.18 | 57.57 | a | 56.93 | a | 55.40 | 54.92 | 47.67 | 43.71 | 50.21 | ||||||||||
| 1989 | 42.34 | 37.48 | 45.10 | 51.77 | 51.21 | 56.92 | 57.37 | 58.47 | 57.77 | 51.11 | 47.48 | 42.84 | 49.99 | |||||||||||||
| 1990 | 43.65 | 42.50 | 46.45 | 49.93 | 51.61 | 56.30 | 58.82 | 60.82 | 59.27 | 50.47 | 47.22 | 36.76 | 50.32 | |||||||||||||
| 1991 | 41.39 | 49.55 | 43.21 | 46.20 | 49.77 | 53.25 | 57.90 | 58.29 | 58.13 | 50.98 | 48.28 | 44.24 | 50.10 | |||||||||||||
| 1992 | 45.00 | 48.29 | 47.13 | 50.53 | 52.48 | 56.48 | 62.03 | 62.56 | 58.22 | 53.90 | 48.77 | 41.97 | 52.28 | |||||||||||||
| 1993 | 40.74 | 43.50 | 48.48 | 50.67 | 57.06 | 57.52 | 60.00 | 61.06 | 57.00 | 53.89 | 42.55 | 43.42 | 51.32 | |||||||||||||
| 1994 | 45.65 | 42.61 | 48.05 | 49.78 | 52.85 | 55.00 | 57.19 | 60.68 | 59.92 | 50.29 | 42.95 | 43.84 | 50.73 | |||||||||||||
| 1995 | 47.45 | 47.46 | 47.19 | 47.93 | 52.71 | 56.83 | 61.15 | 58.53 | 61.78 | 52.52 | 51.85 | 46.60 | 52.67 | |||||||||||||
| 1996 | 44.15 | 45.52 | 47.63 | 51.07 | 50.94 | 55.05 | 58.95 | 58.31 | 55.63 | 51.52 | 46.22 | 44.71 | 50.81 | |||||||||||||
| 1997 | 44.71 | 44.59 | 46.34 | 49.08 | 56.98 | 57.28 | 59.06 | 61.94 | 60.25 | 52.10 | 50.97 | 43.68 | 52.25 | |||||||||||||
| 1998 | 46.50 | 47.30 | 46.97 | 47.25 | 53.03 | 56.03 | 60.79 | 58.89 | 57.02 | 52.69 | 48.70 | 41.84 | 51.42 | |||||||||||||
| 1999 | 43.90 | 44.50 | 44.53 | 46.90 | 49.69 | 55.48 | 56.92 | 59.98 | 54.38 | 51.08 | 51.10 | 47.19 | 50.47 | |||||||||||||
| 2000 | 42.05 | 46.43 | 44.40 | 50.07 | 52.71 | 56.68 | 58.63 | 57.35 | 58.30 | 52.69 | 43.53 | 44.97 | 50.65 | |||||||||||||
| 2001 | 44.13 | 41.95 | 45.95 | 46.53 | 52.98 | 54.98 | 55.58 | 60.05 | 55.45 | 50.19 | 48.22 | 44.29 | 50.03 | |||||||||||||
| 2002 | 43.47 | 44.57 | 43.55 | 47.08 | 49.24 | 55.97 | 58.45 | 58.19 | 56.28 | 51.35 | 48.03 | 45.73 | 50.16 | |||||||||||||
| 2003 | 48.61 | 43.23 | 48.53 | 48.28 | 51.44 | 57.95 | 59.27 | 59.11 | 58.72 | 55.68 | 45.38 | 44.97 | 51.76 | |||||||||||||
| 2004 | 44.11 | 46.40 | 47.40 | 50.93 | 53.10 | 57.87 | 61.90 | 61.47 | 57.07 | 53.52 | 45.92 | 44.66 | 52.03 | |||||||||||||
| 2005 | 45.44 | 45.57 | 48.29 | 49.17 | 56.13 | 56.30 | 59.45 | 58.23 | 53.00 | 53.52 | 44.03 | 43.39 | 51.04 | |||||||||||||
| 2006 | 46.65 | 43.05 | 43.71 | 47.98 | ----- | z | 56.57 | 58.13 | 55.65 | 56.07 | 49.37 | 47.37 | 43.74 | 49.84 | ||||||||||||
| 2007 | 40.66 | 45.77 | 56.77 | 59.47 | m | 52.07 | i | 56.35 | 61.98 | 60.31 | 56.90 | 51.95 | 46.23 | 43.06 | 52.00 | |||||||||||
| 2008 | 40.84 | 44.40 | 44.10 | 45.43 | 53.85 | 53.35 | 58.26 | 60.18 | 57.05 | 52.47 | 50.95 | 41.16 | 50.17 | |||||||||||||
| 2009 | 43.13 | 43.23 | 44.18 | 47.92 | 52.08 | 57.32 | 59.87 | 60.18 | 59.58 | 53.19 | 48.05 | 40.47 | 50.77 | |||||||||||||
| 2010 | 49.08 | 48.45 | 47.10 | 48.03 | 51.02 | 54.58 | e | 57.76 | 58.48 | 59.30 | g | 57.45 | t | ----- | z | ----- | z | 51.81 | ||||||||
| 2011 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 2012 | ----- | z | ----- | z | ----- | z | 52.12 | z | 50.12 | a | 54.83 | 58.97 | 59.22 | a | 55.05 | a | 52.15 | 48.72 | 43.18 | 52.78 | ||||||
| 2013 | 40.52 | 44.02 | 45.17 | b | 52.00 | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 43.24 | |||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 42.81 | 44.69 | 45.74 | 47.98 | 52.02 | 55.87 | 58.48 | 59.09 | 57.40 | 52.41 | 47.09 | 43.46 | 50.62 | |||||||||||||
| S.D. | 3.30 | 2.68 | 2.45 | 1.75 | 1.75 | 1.65 | 1.54 | 1.57 | 1.90 | 1.62 | 2.43 | 2.55 | 0.87 | |||||||||||||
| SKEW | -0.56 | 0.02 | 1.46 | -0.38 | 0.70 | 0.39 | 0.37 | -0.29 | 0.23 | 0.03 | -0.42 | -0.20 | 0.36 | |||||||||||||
| MAX | 49.08 | 51.00 | 56.77 | 51.77 | 57.06 | 60.43 | 62.03 | 62.56 | 61.83 | 55.68 | 52.00 | 50.13 | 52.77 | |||||||||||||
| MIN | 33.07 | 37.48 | 41.13 | 43.72 | 48.55 | 52.73 | 55.34 | 55.13 | 53.00 | 48.23 | 39.83 | 36.76 | 48.77 | |||||||||||||
| NO YRS | 62 | 63 | 62 | 61 | 60 | 60 | 64 | 64 | 63 | 63 | 63 | 63 | 54 | |||||||||||||