| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 32.65 | 32.65 | ||
| 1950 | 19.79 | 35.52 | 37.76 | 42.65 | 50.35 | 58.18 | 65.03 | b | 65.45 | a | ----- | z | 48.11 | c | 41.20 | b | 40.65 | a | 45.88 | |||||||
| 1951 | 30.40 | a | 36.21 | 35.81 | 46.18 | 50.73 | 59.33 | 66.27 | 62.73 | 59.20 | 46.05 | 38.95 | 28.35 | 46.68 | ||||||||||||
| 1952 | 29.11 | 34.72 | 37.02 | 47.78 | 53.92 | r | 56.23 | 67.71 | 65.19 | 61.58 | 53.45 | 32.85 | 32.02 | 47.06 | ||||||||||||
| 1953 | 41.40 | 36.38 | 39.66 | 43.22 | 48.24 | b | 52.22 | a | 63.90 | g | 63.25 | a | 60.53 | 48.94 | 43.90 | 36.73 | 46.77 | |||||||||
| 1954 | 32.23 | 39.20 | a | 35.00 | b | 45.78 | 52.03 | 54.33 | a | 63.87 | 59.21 | 54.75 | 45.63 | 43.32 | 32.55 | a | 46.49 | |||||||||
| 1955 | 31.02 | 32.15 | a | 34.77 | 38.87 | 48.23 | 58.95 | 61.87 | 64.00 | 56.85 | 49.40 | 35.58 | 31.37 | 45.25 | ||||||||||||
| 1956 | 33.47 | 30.36 | a | 39.15 | 46.12 | 53.79 | 55.29 | b | 66.93 | d | 62.84 | 57.95 | 46.27 | a | 36.18 | 36.79 | 47.09 | |||||||||
| 1957 | 18.86 | b | 35.40 | b | 39.97 | 45.50 | 54.08 | a | 59.85 | 62.77 | 60.00 | 59.45 | a | 45.02 | 37.00 | 37.77 | 46.31 | |||||||||
| 1958 | 35.60 | 42.71 | 37.11 | 43.72 | 58.02 | 60.58 | 68.98 | 69.27 | 56.55 | 51.10 | 39.97 | 39.02 | 50.22 | |||||||||||||
| 1959 | 34.13 | 32.57 | 40.29 | 46.07 | 47.05 | 59.47 | 67.48 | 61.37 | 54.17 | 48.61 | 37.97 | 31.61 | 46.73 | |||||||||||||
| 1960 | 25.52 | 32.28 | 41.16 | 46.12 | 48.32 | 60.40 | 69.45 | 61.58 | 57.22 | 47.74 | 34.38 | 31.65 | 46.32 | |||||||||||||
| 1961 | 34.31 | 39.68 | 39.98 | 40.80 | 45.92 | 63.35 | 67.05 | 69.23 | 51.63 | 44.94 | 33.52 | 31.45 | 46.82 | |||||||||||||
| 1962 | 27.63 | 34.48 | 36.92 | 47.32 | 47.16 | 57.20 | 63.15 | 61.16 | 58.68 | 47.61 | 40.80 | 36.21 | 46.53 | |||||||||||||
| 1963 | 25.77 | 42.61 | 39.02 | 41.63 | 52.02 | 56.47 | 60.13 | 62.82 | 62.82 | 48.10 | 38.85 | 31.82 | 46.84 | |||||||||||||
| 1964 | 32.37 | 32.89 | a | 34.92 | 39.33 | 47.92 | 56.52 | 63.79 | 60.47 | 54.23 | 48.15 | 35.37 | 30.98 | 44.74 | ||||||||||||
| 1965 | 33.81 | 38.12 | 37.84 | 46.07 | 49.13 | 58.37 | 66.23 | 63.90 | 53.17 | 53.48 | 41.18 | 31.63 | 47.74 | |||||||||||||
| 1966 | 34.37 | 33.93 | 40.29 | 45.58 | 52.98 | 57.28 | 62.77 | 64.39 | 59.82 | 49.27 | 41.10 | 34.37 | 48.01 | |||||||||||||
| 1967 | 35.50 | 38.45 | 38.00 | 39.35 | 51.82 | 61.40 | 69.58 | 72.56 | 63.78 | 49.76 | 38.43 | 30.13 | 49.06 | |||||||||||||
| 1968 | 32.37 | 39.02 | 43.58 | 44.52 | 54.06 | 62.88 | 72.08 | 63.52 | 57.53 | 50.02 | 43.23 | 31.68 | 49.54 | |||||||||||||
| 1969 | 22.48 | 29.68 | 38.08 | 42.97 | 54.21 | 60.28 | 63.47 | 62.39 | 57.40 | 43.32 | 39.87 | 33.66 | 45.65 | |||||||||||||
| 1970 | 33.00 | 37.77 | 39.13 | 39.37 | 51.69 | 62.60 | 67.60 | 66.11 | 52.25 | 47.03 | 40.22 | 33.71 | 47.54 | |||||||||||||
| 1971 | 37.00 | 34.62 | 34.98 | 41.20 | 50.23 | 54.63 | 66.45 | 68.19 | 52.40 | 43.90 | 38.40 | 30.71 | 46.06 | |||||||||||||
| 1972 | 29.95 | 36.41 | 42.71 | 40.00 | 54.08 | 60.68 | 67.58 | 67.63 | 54.60 | 45.66 | 39.50 | 25.06 | 46.99 | |||||||||||||
| 1973 | 29.26 | 36.41 | 38.10 | 44.75 | 54.76 | 59.93 | 67.47 | 64.29 | 57.60 | 47.32 | 36.35 | 36.90 | 47.76 | |||||||||||||
| 1974 | 26.27 | 37.04 | 39.58 | 43.57 | 48.45 | 62.97 | 64.32 | 65.73 | 59.62 | 47.48 | 38.68 | 32.63 | 47.19 | |||||||||||||
| 1975 | 33.06 | 32.89 | 34.85 | 38.50 | 48.92 | 56.20 | 67.79 | 60.65 | 58.63 | 47.74 | 36.10 | 32.61 | 45.66 | |||||||||||||
| 1976 | 34.98 | 34.57 | 36.73 | 42.43 | 51.24 | 55.47 | 66.55 | 61.85 | 59.83 | 48.82 | 41.75 | 34.42 | 47.39 | |||||||||||||
| 1977 | 28.21 | 37.70 | 36.48 | 47.13 | 46.45 | 62.87 | 64.53 | 69.56 | 54.67 | 47.66 | 36.07 | 34.85 | 47.18 | |||||||||||||
| 1978 | 34.23 | 37.77 | 43.56 | 43.57 | 48.16 | 59.15 | 66.40 | 63.87 | 55.30 | 49.02 | 30.70 | 25.74 | 46.46 | |||||||||||||
| 1979 | 15.26 | 34.54 | 40.60 | 44.33 | 53.69 | 60.15 | 67.21 | 63.79 | 61.80 | 51.66 | 35.30 | 37.15 | 47.12 | |||||||||||||
| 1980 | 28.23 | 36.84 | 38.26 | 46.68 | 51.29 | 55.17 | 67.10 | 61.48 | 58.67 | 48.35 | 40.12 | 38.50 | 47.56 | |||||||||||||
| 1981 | 32.48 | 37.05 | 39.66 | 45.08 | 49.94 | 57.42 | 63.37 | 68.73 | 58.07 | 46.19 | 39.12 | 33.16 | 47.52 | |||||||||||||
| 1982 | 28.21 | 34.96 | 38.98 | 42.22 | 49.50 | 60.88 | 64.44 | 65.00 | 54.70 | 46.16 | 34.27 | 29.81 | 45.76 | |||||||||||||
| 1983 | 37.03 | 39.11 | 42.35 | 42.63 | 52.92 | 56.00 | 61.74 | 67.35 | 54.13 | 50.18 | 39.13 | 23.02 | 47.13 | |||||||||||||
| 1984 | 33.71 | 37.67 | 42.26 | 42.13 | 50.02 | 55.92 | 67.23 | 66.10 | 55.48 | 43.81 | 36.75 | 28.10 | 46.60 | |||||||||||||
| 1985 | 28.24 | 32.43 | 38.00 | 48.35 | 52.29 | 60.83 | 71.35 | 63.06 | 51.82 | 47.50 | 27.83 | 26.10 | 45.65 | |||||||||||||
| 1986 | 38.18 | 36.88 | 45.61 | 43.02 | 53.50 | 63.93 | 61.60 | 69.95 | 52.68 | 50.18 | 40.45 | 32.52 | 49.04 | |||||||||||||
| 1987 | 32.60 | 37.55 | 41.02 | 50.23 | 55.11 | 63.25 | 62.74 | 65.05 | 60.17 | 52.02 | 39.98 | 30.90 | 49.22 | |||||||||||||
| 1988 | 31.56 | 39.38 | 40.06 | 48.03 | 50.65 | 59.38 | 67.35 | 65.24 | 58.03 | 56.21 | 39.23 | 32.94 | 49.01 | |||||||||||||
| 1989 | 33.97 | 25.23 | 40.45 | 49.83 | 51.10 | 61.53 | 64.84 | 62.77 | 57.75 | 47.74 | 40.85 | 36.10 | 47.68 | |||||||||||||
| 1990 | 36.26 | 34.89 | 42.23 | 51.07 | 50.37 | 59.11 | c | ----- | z | ----- | z | ----- | z | ----- | z | 40.82 | 26.11 | 42.61 | ||||||||
| 1991 | 32.65 | 42.75 | 38.42 | 43.28 | 48.79 | 54.92 | 67.68 | 68.11 | 59.90 | 47.92 | 39.78 | 33.82 | 48.17 | |||||||||||||
| 1992 | 36.90 | 40.28 | 43.24 | 47.97 | 57.31 | 62.90 | 64.40 | 65.84 | 58.13 | c | 50.02 | 37.38 | 26.11 | 49.21 | ||||||||||||
| 1993 | 19.61 | 25.52 | 40.76 | 43.40 | 55.02 | 56.13 | 57.68 | a | 61.61 | 58.20 | 50.10 | 30.53 | 33.10 | 44.31 | ||||||||||||
| 1994 | 36.90 | 32.89 | 40.63 | 46.80 | 53.61 | 57.90 | 68.29 | 64.44 | d | 60.95 | 46.27 | 33.77 | 32.98 | 47.95 | ||||||||||||
| 1995 | 34.31 | 40.05 | 39.16 | 42.73 | 51.52 | 57.07 | 64.55 | 61.45 | 60.27 | 46.52 | 43.25 | 34.65 | r | 49.17 | ||||||||||||
| 1996 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 56.15 | ----- | z | ----- | z | ----- | z | 56.15 | ||
| 1997 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 60.18 | 67.21 | 69.32 | 61.32 | 49.33 | j | 42.81 | a | 33.76 | 55.77 | ||||||
| 1998 | 37.67 | a | 39.41 | 42.74 | 46.93 | 51.31 | 60.43 | 71.76 | 68.53 | 64.83 | 49.05 | 40.50 | 34.05 | 50.60 | ||||||||||||
| 1999 | 39.39 | c | 40.38 | x | 40.07 | h | 44.68 | b | 50.97 | a | 60.50 | d | 66.72 | a | 70.05 | a | 61.19 | d | 53.80 | d | 46.91 | m | 35.02 | g | 55.91 | |
| 2000 | 33.52 | g | 39.45 | i | 43.10 | e | 51.69 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 47.39 | |
| 2001 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 64.50 | a | ----- | z | 59.12 | a | 48.23 | 40.57 | 31.32 | 48.75 | ||||
| 2002 | 32.69 | 36.73 | 36.81 | 44.98 | 50.92 | 61.38 | 68.45 | 62.21 | 56.25 | 42.87 | 38.18 | 34.56 | 47.17 | |||||||||||||
| 2003 | 40.23 | 34.41 | 42.58 | 42.13 | 51.34 | 60.98 | 70.66 | 66.15 | 59.88 | 50.71 | 33.75 | 34.35 | 48.93 | |||||||||||||
| 2004 | 31.23 | 35.76 | 43.60 | 46.27 | 51.03 | 59.90 | 67.50 | 67.21 | 54.82 | 47.47 | 38.12 | 36.13 | 48.25 | |||||||||||||
| 2005 | 32.98 | 35.30 | 41.98 | 44.58 | 52.68 | 55.42 | 67.63 | 66.18 | 55.87 | 48.63 | 35.60 | 28.23 | 47.09 | |||||||||||||
| 2006 | 37.37 | 32.52 | 37.00 | 44.95 | 52.82 | 60.57 | 68.82 | 63.73 | 57.20 | 45.24 | 38.78 | 32.73 | 47.64 | |||||||||||||
| 2007 | 29.27 | 36.18 | 43.27 | 43.80 | 52.81 | 58.60 | 70.27 | 64.11 | 55.27 | 45.32 | 38.13 | 32.34 | 47.45 | |||||||||||||
| 2008 | 28.84 | 37.36 | 35.58 | 39.43 | 52.27 | 56.93 | 66.18 | 64.85 | 57.43 | 48.31 | 42.98 | 26.71 | 46.41 | |||||||||||||
| 2009 | 32.94 | 35.55 | 36.39 | 42.63 | 53.32 | 59.82 | 68.76 | 66.00 | 59.42 | 43.69 | 38.02 | 27.08 | 46.97 | |||||||||||||
| 2010 | 38.56 | 38.05 | 39.42 | 41.83 | 48.06 | 56.12 | 65.26 | 63.05 | 57.63 | 48.23 | 37.30 | 33.19 | 47.23 | |||||||||||||
| 2011 | 34.77 | 31.77 | 39.84 | 38.82 | 47.03 | 55.50 | 62.16 | 65.77 | 62.18 | 46.39 | 36.98 | 31.71 | 46.08 | |||||||||||||
| 2012 | 34.85 | 33.57 | 39.15 | 45.92 | 50.50 | 56.12 | 65.98 | 66.68 | 59.38 | 48.71 | 41.75 | 33.81 | 48.03 | |||||||||||||
| 2013 | 30.32 | 36.30 | 41.60 | 50.25 | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 36.07 | ||||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 31.89 | 35.80 | 39.45 | 44.28 | 51.24 | 58.80 | 66.11 | 64.87 | 57.68 | 48.09 | 38.22 | 32.34 | 47.28 | |||||||||||||
| S.D. | 5.28 | 3.48 | 2.65 | 3.10 | 2.64 | 2.74 | 2.89 | 2.92 | 3.04 | 2.66 | 3.35 | 3.64 | 1.30 | |||||||||||||
| SKEW | -1.01 | -0.63 | 0.06 | 0.14 | 0.15 | -0.09 | -0.32 | 0.35 | -0.04 | 0.53 | -0.74 | -0.32 | 0.30 | |||||||||||||
| MAX | 41.40 | 42.75 | 45.61 | 51.69 | 58.02 | 63.93 | 72.08 | 72.56 | 64.83 | 56.21 | 43.90 | 40.65 | 50.60 | |||||||||||||
| MIN | 15.26 | 25.23 | 34.77 | 38.50 | 45.92 | 52.22 | 57.68 | 59.21 | 51.63 | 42.87 | 27.83 | 23.02 | 44.31 | |||||||||||||
| NO YRS | 60 | 59 | 60 | 60 | 58 | 60 | 59 | 59 | 60 | 59 | 60 | 60 | 53 | |||||||||||||