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 | ----- | z |
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1963 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 76.70 | 91.13 | 91.84 | 81.20 | 73.90 | k | 50.27 | 33.97 | 70.85 | f | ||||||
1964 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1965 | 40.61 | 46.21 | 49.58 | 60.90 | 66.19 | 78.97 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 57.08 | f | ||||||
1966 | 37.43 | c | 38.00 | ----- | z | ----- | z | 77.52 | 83.60 | 94.81 | 90.52 | 81.39 | b | 66.00 | 54.63 | 35.29 | 65.92 | b | ||||||||
1967 | 40.29 | 48.00 | 54.87 | 57.60 | 69.23 | a | 75.70 | 93.55 | 94.19 | 81.03 | 66.39 | 53.77 | 33.84 | 64.04 | ||||||||||||
1968 | 36.40 | a | 48.52 | 56.58 | 57.70 | 69.97 | 81.87 | 90.68 | 81.35 | 75.87 | 65.32 | 48.60 | 39.03 | 62.66 | ||||||||||||
1969 | 43.16 | 42.46 | 49.16 | 64.50 | 79.74 | 77.23 | 90.71 | 92.03 | 83.70 | 58.65 | 50.30 | 39.94 | 64.30 | |||||||||||||
1970 | 41.68 | 51.21 | 50.61 | 56.07 | 71.97 | 81.37 | 89.84 | 91.63 | a | 74.90 | 60.13 | 50.33 | 38.29 | 63.17 | ||||||||||||
1971 | 40.68 | 44.61 | 51.55 | 60.73 | 70.71 | 82.30 | 91.13 | 89.53 | a | 75.20 | 59.39 | 47.20 | 35.77 | 62.40 | ||||||||||||
1972 | 39.16 | 48.34 | 59.10 | 61.77 | 74.61 | 83.03 | 90.48 | 88.26 | 76.52 | a | 65.19 | 46.53 | 32.77 | 63.81 | ||||||||||||
1973 | 31.16 | 40.96 | 49.61 | 58.13 | 73.84 | 83.10 | 89.65 | 90.00 | b | 75.55 | a | 67.39 | 49.77 | 41.35 | 62.54 | |||||||||||
1974 | 38.19 | 42.61 | 56.39 | 60.37 | 74.58 | 87.83 | 91.84 | 88.39 | 82.50 | 66.87 | 52.20 | 38.13 | 64.99 | |||||||||||||
1975 | 36.26 | 42.46 | 50.29 | 54.13 | 67.26 | 78.67 | 91.06 | 87.55 | 79.77 | 64.94 | 47.00 | 41.06 | 61.70 | |||||||||||||
1976 | 37.42 | 44.00 | 49.16 | 61.57 | 76.10 | 81.45 | a | 92.61 | 87.03 | 80.47 | 64.39 | 54.07 | 41.68 | 64.16 | ||||||||||||
1977 | 35.32 | 47.36 | 49.65 | 68.77 | 66.87 | 89.43 | 91.73 | a | 88.70 | a | 80.00 | 68.55 | 52.23 | 44.32 | 65.24 | |||||||||||
1978 | 41.77 | 47.00 | 58.19 | 61.53 | 70.16 | 82.00 | 91.58 | 86.42 | 76.90 | 70.74 | 46.73 | 35.03 | 64.01 | |||||||||||||
1979 | 29.97 | 41.14 | 52.19 | 62.53 | 73.42 | 83.60 | 91.29 | 88.32 | 84.63 | 68.97 | 45.07 | 42.26 | 63.62 | |||||||||||||
1980 | 39.77 | 46.00 | 50.94 | 65.93 | 69.00 | 82.80 | 92.13 | 87.68 | 79.80 | 64.52 | 51.40 | 39.97 | 64.16 | |||||||||||||
1981 | 34.58 | 48.57 | 54.16 | 66.07 | 69.45 | 84.67 | 93.26 | 91.97 | 81.63 | 61.26 | 54.00 | 44.65 | 65.36 | |||||||||||||
1982 | 37.94 | 42.71 | 51.19 | 59.48 | a | 71.03 | 82.15 | d | 89.03 | 91.74 | d | 75.88 | d | 59.43 | a | 46.41 | a | 39.52 | d | 62.21 | ||||||
1983 | 41.36 | c | 45.32 | 50.77 | 54.07 | 67.27 | a | 79.59 | a | 90.07 | a | 89.14 | b | 80.14 | b | 66.97 | b | 49.89 | b | 36.19 | 62.56 | |||||
1984 | 29.16 | 34.61 | a | 47.71 | 56.67 | c | 72.69 | e | 79.12 | d | 89.73 | a | 89.03 | 79.27 | 58.00 | 50.67 | 37.16 | 60.32 | ||||||||
1985 | 32.13 | 35.32 | 49.84 | 68.33 | 75.77 | 85.90 | 93.55 | 90.13 | 73.93 | 65.68 | 45.34 | a | 31.94 | 62.32 | ||||||||||||
1986 | 38.19 | 48.64 | 59.90 | 60.90 | 72.65 | 89.30 | 89.42 | 91.70 | a | 72.53 | 65.87 | a | 51.73 | 37.37 | a | 64.85 | ||||||||||
1987 | 37.13 | a | 46.22 | a | 53.60 | a | 72.40 | 75.97 | a | 86.93 | 88.16 | 88.45 | 82.00 | c | 71.06 | 51.76 | a | 41.00 | 66.22 | |||||||
1988 | 36.19 | 46.24 | 52.94 | 68.76 | a | 74.62 | b | 91.40 | 95.00 | 91.35 | 78.82 | b | 75.42 | 51.50 | b | 38.41 | b | 66.72 | ||||||||
1989 | 32.60 | a | 36.96 | a | 58.13 | a | 70.00 | c | 75.48 | 83.90 | 97.07 | a | 89.48 | b | 82.00 | a | 67.74 | 51.57 | 40.42 | 65.45 | ||||||
1990 | 43.10 | 43.04 | 57.68 | 67.34 | a | 72.81 | 86.63 | 93.48 | 89.52 | 86.07 | 67.97 | b | 53.34 | a | 31.74 | 66.06 | ||||||||||
1991 | 35.77 | 49.75 | 54.45 | 60.86 | a | 69.80 | a | 82.77 | 94.35 | 92.73 | a | 79.43 | b | 68.61 | 48.47 | 38.39 | 64.62 | |||||||||
1992 | 37.30 | a | 48.85 | b | 60.14 | b | 72.67 | 80.32 | 86.66 | a | 90.90 | a | 93.00 | a | 82.83 | a | 69.84 | 44.53 | 35.76 | b | 66.90 | |||||
1993 | 35.61 | 38.11 | a | 53.26 | 61.62 | a | 76.13 | 77.90 | a | 85.21 | c | 88.74 | d | 80.61 | b | 65.10 | 46.63 | 40.74 | 62.47 | |||||||
1994 | 46.37 | a | 45.57 | 57.84 | 66.11 | c | 78.97 | 89.34 | a | 95.93 | a | 95.45 | 85.07 | a | 64.10 | b | 44.10 | a | 41.73 | a | 67.55 | |||||
1995 | 43.03 | 54.07 | 55.45 | b | 62.38 | a | 68.37 | a | 80.32 | b | 91.07 | a | 94.19 | 83.24 | a | 69.00 | c | 60.00 | d | 48.42 | e | 67.46 | ||||
1996 | 42.27 | a | 44.46 | a | 58.44 | f | 63.69 | d | 71.86 | c | 89.37 | c | 96.11 | c | 93.75 | c | 77.82 | b | 67.08 | e | 54.21 | b | 45.50 | c | 67.83 | a |
1997 | 40.75 | c | 44.64 | 59.66 | b | 60.21 | b | 77.94 | 83.79 | a | 91.73 | e | 91.06 | 81.68 | e | 68.86 | c | 54.73 | d | 38.45 | b | 66.13 | ||||
1998 | 45.93 | a | 44.69 | b | 54.17 | b | 59.89 | c | 71.74 | h | 78.58 | d | 95.17 | b | 93.11 | c | 85.65 | d | 66.86 | b | 55.10 | 42.63 | a | 65.62 | a | |
1999 | 47.10 | b | 49.35 | b | 60.68 | c | 59.17 | g | 68.16 | 80.37 | 92.06 | 90.45 | 78.90 | 71.68 | 59.73 | 40.68 | 67.20 | a | ||||||||
2000 | 42.39 | 47.79 | 52.81 | 68.23 | 75.13 | 86.80 | 96.00 | 93.58 | 78.00 | 65.45 | 42.00 | 41.24 | b | 65.79 | ||||||||||||
2001 | 36.84 | 43.39 | 56.71 | 61.87 | 77.84 | 84.77 | 92.71 | 91.87 | a | 83.72 | a | 68.73 | a | 52.29 | b | 34.39 | 65.43 | |||||||||
2002 | 34.68 | 35.30 | a | 48.03 | 61.79 | a | 70.32 | 83.96 | b | 94.45 | 88.37 | a | 77.43 | 61.00 | 47.34 | a | 42.37 | a | 62.09 | |||||||
2003 | 47.06 | 42.41 | a | 52.33 | a | 60.41 | a | 72.37 | a | 82.77 | 96.38 | b | 91.43 | a | 79.96 | e | 71.67 | a | 44.20 | 42.37 | d | 65.28 | ||||
2004 | 28.26 | d | 35.07 | 57.55 | b | 63.41 | a | 71.13 | a | 82.63 | c | 89.87 | a | 85.45 | b | 77.40 | 63.78 | d | 48.93 | 40.00 | 61.96 | |||||
2005 | 40.84 | 44.48 | a | 53.55 | 59.96 | c | 69.93 | c | 77.10 | 93.00 | a | 88.40 | a | 77.31 | a | 65.52 | 50.61 | b | 39.43 | a | 63.34 | |||||
2006 | 41.16 | 41.14 | 49.71 | 62.93 | 73.81 | 85.03 | a | 94.55 | 88.29 | c | 75.32 | e | 61.67 | a | 51.23 | 39.21 | b | 63.67 | ||||||||
2007 | 30.24 | b | 44.85 | a | 56.97 | a | 62.32 | b | 74.23 | 84.40 | 94.10 | 92.15 | k | ----- | z | ----- | z | 51.17 | f | 34.77 | 60.23 | d | ||||
2008 | 32.58 | 40.17 | 49.21 | q | 55.44 | u | ----- | z | ----- | z | 92.71 | 89.77 | 79.67 | 65.16 | 52.50 | 38.68 | 61.41 | d | ||||||||
2009 | 38.74 | 44.14 | 51.48 | 59.07 | 74.63 | a | 78.37 | 91.58 | 88.13 | 82.73 | 58.48 | ----- | z | ----- | z | 66.74 | b | |||||||||
2010 | 35.61 | 43.86 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 86.39 | 81.90 | 66.97 | 46.63 | 40.10 | 57.35 | e | |||||||
2011 | ----- | z | 47.00 | 47.35 | 55.14 | b | 63.90 | 78.39 | b | 89.32 | 91.06 | 80.97 | ----- | z | ----- | z | ----- | z | 69.14 | d | ||||||
2012 | ----- | z | ----- | z | 67.27 | t | 66.17 | 73.00 | 88.48 | a | 94.35 | 93.55 | 81.90 | 59.21 | q | 54.42 | d | 42.08 | f | 78.84 | e | |||||
2013 | 24.68 | 35.61 | 52.58 | 58.07 | 70.94 | 84.87 | g | 91.90 | 89.28 | f | 75.42 | k | 61.06 | 50.87 | g | 32.64 | q | 56.41 | e | |||||||
2014 | 39.09 | i | 45.71 | 54.42 | 59.97 | 71.10 | 80.46 | f | 92.03 | 82.38 | r | 80.20 | 68.90 | 50.50 | 42.84 | 62.85 | c | |||||||||
2015 | 40.81 | 52.86 | 59.29 | 62.70 | 68.10 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 56.75 | g | |||||
2016 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 37.91 | 44.20 | 53.74 | 62.25 | 72.43 | 83.00 | 92.21 | 90.10 | 79.86 | 65.79 | 50.32 | 39.10 | 64.20 | |||||||||||||
S.D. | 5.02 | 4.62 | 3.78 | 4.44 | 3.75 | 3.90 | 2.39 | 2.68 | 3.17 | 3.91 | 3.91 | 3.64 | 1.76 | |||||||||||||
SKEW | -0.37 | -0.37 | 0.19 | 0.42 | 0.07 | 0.15 | -0.16 | -0.51 | -0.20 | -0.18 | 0.19 | -0.03 | 0.03 | |||||||||||||
MAX | 47.10 | 54.07 | 60.68 | 72.67 | 80.32 | 91.40 | 97.07 | 95.45 | 86.07 | 75.42 | 60.00 | 48.42 | 67.55 | |||||||||||||
MIN | 24.68 | 34.61 | 47.35 | 54.07 | 63.90 | 75.70 | 85.21 | 81.35 | 72.53 | 58.00 | 42.00 | 31.74 | 60.32 | |||||||||||||
YRS | 48 | 50 | 46 | 47 | 48 | 47 | 49 | 47 | 48 | 46 | 46 | 46 | 37 |