| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 56.23 | r | 55.00 | 34.61 | 44.81 | |||
| 1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1963 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1964 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1965 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1966 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1967 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1968 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1969 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1970 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1971 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1972 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1973 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1974 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1975 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1976 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1978 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1981 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1982 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1983 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1984 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1985 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1986 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 86.39 | 66.13 | 69.77 | 54.43 | 48.87 | 65.12 | ||||||
| 1987 | 39.94 | 48.82 | 48.93 | b | 63.79 | b | 67.87 | 81.08 | f | 75.13 | a | 80.47 | a | 77.93 | b | 68.45 | 48.70 | 37.20 | a | 59.75 | ||||||
| 1988 | 32.48 | 46.07 | 40.10 | 50.24 | a | 59.43 | c | 65.81 | d | 78.47 | a | 77.03 | 69.87 | 70.87 | 40.77 | 38.23 | 55.78 | |||||||||
| 1989 | 37.94 | 29.68 | 40.42 | 54.27 | 57.77 | 72.87 | 71.61 | 70.58 | 70.17 | 55.26 | 46.67 | c | 49.03 | 54.69 | ||||||||||||
| 1990 | 37.32 | 34.32 | 45.74 | 57.23 | 56.61 | 65.37 | 80.94 | 76.13 | 75.00 | 56.77 | 42.27 | 30.65 | 54.86 | |||||||||||||
| 1991 | 41.23 | 49.79 | 41.13 | 45.83 | 53.19 | 65.00 | 86.87 | 85.13 | 80.27 | 61.94 | 43.27 | 39.77 | 57.78 | |||||||||||||
| 1992 | 40.52 | 45.66 | 55.16 | 53.97 | 74.77 | 73.93 | 74.16 | 82.45 | 72.17 | 64.97 | 43.00 | 32.13 | 59.41 | |||||||||||||
| 1993 | 32.00 | 36.64 | 47.87 | 46.53 | 65.55 | 65.17 | 66.97 | 74.48 | 75.17 | 60.71 | 46.33 | 40.48 | 54.83 | |||||||||||||
| 1994 | 43.71 | 39.86 | 50.00 | 52.63 | 62.97 | 66.97 | 82.61 | 76.87 | 72.67 | 56.81 | 35.90 | a | 35.84 | 56.40 | ||||||||||||
| 1995 | 36.94 | 50.61 | 42.48 | 49.30 | 61.94 | 63.07 | 73.58 | 70.68 | 71.03 | 54.81 | 47.40 | 37.39 | 54.93 | |||||||||||||
| 1996 | 37.39 | 38.34 | 46.06 | 49.73 | 54.74 | 68.37 | 81.23 | 79.52 | 65.77 | 54.55 | 42.93 | 36.35 | 54.58 | |||||||||||||
| 1997 | 37.39 | 40.21 | 43.77 | 47.37 | c | 61.90 | k | 66.15 | q | 77.43 | q | 79.27 | p | 69.62 | q | 55.31 | o | 44.79 | a | 37.03 | 41.76 | |||||
| 1998 | 38.65 | 39.07 | 45.77 | 54.78 | l | 51.50 | w | 69.07 | p | 84.18 | n | 83.38 | o | 78.71 | p | 58.83 | s | 40.33 | o | 34.26 | 39.44 | |||||
| 1999 | 37.11 | l | 36.29 | 41.39 | m | 47.05 | i | 42.73 | t | 66.29 | m | 81.89 | v | 80.00 | r | 77.90 | t | 53.60 | z | 51.06 | n | 38.07 | q | 36.29 | ||
| 2000 | 35.91 | i | 41.82 | l | 44.79 | q | 56.90 | t | 57.22 | m | 70.89 | l | 75.00 | s | 81.11 | l | ----- | z | 53.82 | n | 37.40 | t | 40.50 | z | 9999.00 | |
| 2001 | 39.44 | o | 39.65 | k | 45.79 | l | 49.61 | l | 62.75 | o | 64.33 | o | 72.93 | q | 80.25 | o | 71.31 | n | 52.57 | x | 40.33 | u | 34.39 | 34.39 | ||
| 2002 | 35.24 | j | 43.18 | 42.32 | i | 54.87 | o | 56.00 | n | 73.00 | k | 84.07 | q | 77.44 | m | 72.53 | o | 55.70 | u | 50.53 | m | 41.50 | m | 43.18 | ||
| 2003 | 42.24 | n | 37.75 | l | 43.07 | q | 43.11 | k | ----- | z | 75.93 | p | 83.50 | m | 79.78 | m | 75.55 | s | 61.21 | l | 34.62 | v | 38.59 | n | 9999.00 | |
| 2004 | 38.65 | k | 40.37 | j | 50.56 | o | 58.53 | k | 58.88 | o | 69.50 | n | 81.35 | n | 76.00 | r | 68.71 | p | 54.67 | p | 49.22 | l | 43.88 | o | 9999.00 | |
| 2005 | 39.26 | l | 42.15 | o | 49.40 | k | 49.18 | m | 57.07 | q | 60.35 | m | 80.27 | p | 79.21 | l | 73.06 | n | 65.09 | t | 45.77 | q | 39.47 | l | 9999.00 | |
| 2006 | 37.63 | l | 41.75 | l | 40.52 | j | 50.65 | g | ----- | z | 71.22 | l | 79.36 | t | 75.59 | n | 67.22 | g | 55.58 | 39.87 | 38.52 | 44.65 | ||||
| 2007 | 35.87 | 40.04 | 48.32 | 48.77 | 59.52 | 64.50 | 76.77 | 72.94 | 64.50 | 50.03 | 46.43 | 34.48 | 53.51 | |||||||||||||
| 2008 | 32.52 | 38.72 | 40.06 | 40.50 | 54.84 | 61.00 | 75.19 | 74.19 | 68.97 | 58.19 | 47.50 | 37.19 | 52.41 | |||||||||||||
| 2009 | 37.87 | 41.96 | 38.16 | 46.00 | 60.39 | 65.17 | 79.26 | 74.84 | 71.87 | 50.13 | 41.07 | 32.19 | 53.24 | |||||||||||||
| 2010 | 40.26 | 40.82 | 44.19 | 45.13 | 50.39 | 60.03 | 76.19 | 73.97 | 63.30 | 55.81 | 38.67 | 34.81 | 51.96 | |||||||||||||
| 2011 | 39.68 | 35.86 | 38.68 | 41.63 | 48.29 | 61.10 | 69.35 | 76.61 | 73.14 | a | 54.61 | 39.21 | a | 42.55 | 51.73 | |||||||||||
| 2012 | 39.13 | 38.17 | 39.81 | 49.46 | b | 59.06 | 60.33 | 74.45 | 79.65 | 75.17 | 55.94 | 43.67 | 32.94 | 53.98 | ||||||||||||
| 2013 | 37.55 | 39.14 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 38.35 | |||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 37.81 | 40.63 | 44.26 | 49.55 | 59.21 | 65.24 | 76.42 | 77.17 | 71.36 | 58.62 | 44.39 | 37.22 | 54.67 | |||||||||||||
| S.D. | 3.03 | 5.25 | 4.61 | 5.69 | 6.64 | 4.13 | 5.07 | 4.58 | 4.68 | 6.24 | 4.87 | 4.76 | 2.10 | |||||||||||||
| SKEW | -0.42 | 0.27 | 0.61 | 0.73 | 0.55 | 0.75 | 0.13 | 0.52 | -0.02 | 0.73 | 0.58 | 1.22 | 0.64 | |||||||||||||
| MAX | 43.71 | 50.61 | 55.16 | 63.79 | 74.77 | 73.93 | 86.87 | 86.39 | 80.27 | 70.87 | 55.00 | 49.03 | 59.41 | |||||||||||||
| MIN | 32.00 | 29.68 | 38.16 | 40.50 | 48.29 | 60.03 | 66.97 | 70.58 | 63.30 | 50.03 | 35.90 | 30.65 | 51.73 | |||||||||||||
| NO YRS | 19 | 21 | 18 | 17 | 16 | 15 | 16 | 17 | 17 | 18 | 20 | 22 | 15 | |||||||||||||