YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | 83.82 | h | 90.94 | 82.97 | 77.67 | 61.35 | 44.47 | 33.35 | 65.12 | f | ||||||
1952 | 35.06 | 37.03 | 39.03 | 58.97 | 70.77 | 80.63 | 86.58 | 86.03 | 79.37 | 71.77 | 43.17 | 35.74 | 60.35 | |||||||||||||
1953 | 40.45 | 38.04 | 49.77 | 56.90 | 63.55 | 83.57 | 87.16 | 81.16 | 80.20 | 62.65 | 50.27 | 35.61 | 60.78 | |||||||||||||
1954 | 40.45 | 48.43 | 46.16 | 65.57 | 72.19 | 79.97 | 88.10 | 84.03 | 75.67 | 65.26 | 54.50 | 37.10 | 63.12 | |||||||||||||
1955 | 34.03 | 32.96 | 45.77 | 55.33 | 67.03 | a | 77.03 | 86.90 | 85.10 | 79.60 | 67.81 | 47.30 | 41.68 | 60.05 | ||||||||||||
1956 | 42.81 | 37.04 | a | 50.58 | 58.33 | 72.68 | 84.40 | 86.71 | 82.52 | 81.87 | 65.19 | 45.00 | 38.06 | 62.10 | ||||||||||||
1957 | 35.35 | 46.07 | 47.77 | a | 53.60 | 60.77 | 77.03 | 83.29 | 80.39 | 76.00 | 59.26 | 40.37 | 41.32 | 58.44 | ||||||||||||
1958 | 40.56 | f | 47.40 | h | 43.70 | a | 55.70 | 74.87 | 85.23 | 87.94 | 87.39 | 76.60 | 67.03 | 52.13 | 48.90 | 67.95 | b | |||||||||
1959 | 43.26 | 39.79 | 47.65 | 61.90 | 70.48 | 85.40 | 90.13 | 84.87 | 76.33 | 65.29 | 48.45 | a | 42.19 | 62.98 | ||||||||||||
1960 | 34.00 | 33.04 | d | 49.52 | f | 59.90 | 70.32 | 86.50 | h | 89.97 | 88.03 | 80.23 | 58.58 | 49.87 | 35.10 | 59.90 | b | |||||||||
1961 | 38.00 | 42.21 | 46.13 | 58.40 | 69.81 | 86.43 | 88.10 | 84.45 | 69.57 | 61.32 | 45.57 | ----- | z | 62.73 | a | |||||||||||
1962 | ----- | z | ----- | z | ----- | z | 63.77 | 69.61 | 82.50 | ----- | z | 87.71 | 78.53 | 63.48 | 51.83 | ----- | z | 71.06 | e | |||||||
1963 | ----- | z | ----- | z | ----- | z | 61.12 | v | 76.56 | d | 81.50 | 91.26 | 82.65 | 80.26 | c | 66.75 | o | 52.60 | 41.23 | 72.29 | e | |||||
1964 | 36.71 | 39.83 | 41.19 | 53.90 | 68.58 | 79.67 | 88.94 | 81.65 | 74.27 | 68.16 | 45.43 | 35.29 | 59.47 | |||||||||||||
1965 | ----- | z | 37.59 | a | 42.97 | 55.03 | 64.29 | 73.93 | 85.13 | 85.19 | 71.93 | 67.00 | 51.63 | 40.40 | a | 61.37 | a | |||||||||
1966 | 34.68 | 34.79 | 49.42 | 60.50 | 73.10 | 81.03 | 88.77 | 85.26 | 77.93 | 63.45 | 52.60 | 38.13 | a | 61.64 | ||||||||||||
1967 | 37.00 | a | 44.32 | 54.39 | 56.77 | 68.55 | 76.93 | a | 87.00 | 83.65 | 77.43 | 67.42 | 53.10 | 31.57 | c | 61.51 | ||||||||||
1968 | 34.28 | b | 44.97 | 49.06 | 53.27 | 68.06 | 83.57 | 86.61 | 78.39 | 76.47 | 66.19 | 45.97 | 35.45 | 60.19 | ||||||||||||
1969 | 38.55 | 37.79 | 42.35 | 62.13 | 75.48 | 78.54 | b | 87.32 | 87.47 | a | 77.87 | 54.45 | 47.13 | 40.37 | a | 60.79 | ||||||||||
1970 | 39.23 | a | 48.46 | b | 43.16 | 51.83 | 71.87 | 80.63 | 88.03 | 87.21 | b | 71.73 | 56.68 | 48.10 | 41.17 | b | 60.68 | |||||||||
1971 | 37.63 | a | 40.39 | 49.50 | a | 57.53 | 65.39 | 80.37 | c | 86.43 | a | 82.14 | b | 71.29 | b | 56.42 | 44.00 | 31.52 | 58.55 | |||||||
1972 | 37.19 | 45.70 | b | 57.23 | 59.50 | 70.06 | 79.33 | 86.80 | a | 81.29 | 72.73 | 55.53 | a | 39.80 | 32.65 | 59.82 | ||||||||||
1973 | 31.26 | 39.18 | 41.13 | 51.10 | 66.84 | 76.11 | b | 83.07 | a | 82.77 | 72.52 | c | 63.80 | a | 48.17 | 36.77 | a | 57.73 | ||||||||
1974 | 31.19 | 36.14 | 52.03 | 55.97 | a | 73.39 | 85.57 | b | 83.77 | a | 82.66 | b | 75.21 | a | 61.90 | a | 46.03 | 34.77 | 59.89 | |||||||
1975 | 34.43 | a | 38.38 | b | 43.13 | 50.97 | 63.17 | b | 74.67 | 82.48 | b | 81.65 | 73.10 | a | 63.90 | a | 45.07 | c | 38.13 | 57.42 | ||||||
1976 | 36.23 | a | 45.10 | 46.87 | 57.93 | 68.38 | b | 78.40 | 86.33 | a | 80.45 | 71.87 | 59.68 | 50.80 | 42.16 | 60.35 | ||||||||||
1977 | 33.60 | a | 45.21 | 46.71 | 62.67 | c | 65.65 | 83.40 | 83.77 | a | 82.97 | 74.97 | 64.58 | 49.00 | 41.79 | c | 61.19 | |||||||||
1978 | 35.48 | 37.11 | 49.58 | 57.69 | a | 65.00 | a | 81.43 | 87.00 | 82.68 | 72.93 | 66.16 | 46.53 | 29.27 | i | 61.96 | a | |||||||||
1979 | 27.03 | 36.54 | 42.19 | 54.37 | 64.84 | 76.63 | 85.30 | a | 80.23 | 79.70 | 66.71 | 39.85 | c | 39.27 | a | 57.72 | ||||||||||
1980 | 33.65 | 41.00 | 41.35 | 56.68 | e | 61.97 | 81.10 | 86.45 | 82.07 | b | 75.27 | 61.07 | c | 49.53 | 46.48 | 59.72 | ||||||||||
1981 | 45.40 | a | 44.86 | 45.48 | 62.45 | a | 67.47 | a | 83.52 | a | 83.79 | b | 81.62 | b | 75.13 | 57.57 | a | 51.80 | 40.74 | d | 61.65 | |||||
1982 | 34.71 | 37.82 | 45.70 | d | 56.50 | 66.80 | a | 78.59 | a | 83.48 | 80.58 | 72.23 | 57.45 | 43.66 | a | 35.06 | 57.72 | |||||||||
1983 | 38.61 | 39.32 | 42.74 | d | 49.31 | a | 63.42 | 75.81 | c | 83.68 | 82.03 | 77.50 | 63.16 | 45.93 | a | 35.65 | 58.10 | |||||||||
1984 | 34.39 | 39.66 | 45.25 | c | 52.07 | 73.37 | a | 74.64 | b | 85.55 | 82.39 | 75.42 | d | 53.13 | a | 48.37 | 37.55 | 58.48 | ||||||||
1985 | 34.90 | 36.22 | a | 45.81 | 59.10 | 67.79 | c | 82.52 | a | 84.53 | a | 84.23 | a | 67.40 | 60.45 | 43.83 | 39.30 | a | 58.84 | |||||||
1986 | 43.14 | b | 43.61 | 53.90 | a | 57.46 | b | 68.67 | a | 80.67 | 82.43 | a | 82.59 | d | 66.80 | 57.97 | a | 46.87 | 39.73 | a | 60.32 | |||||
1987 | 35.81 | 39.93 | 44.40 | a | 61.90 | 67.83 | a | 82.03 | 83.19 | 79.61 | 74.45 | a | 66.00 | 46.66 | a | 35.10 | b | 59.74 | ||||||||
1988 | 33.23 | 41.24 | 47.39 | 58.30 | 68.87 | 80.89 | c | 88.26 | 82.90 | 71.38 | a | 69.48 | 47.67 | c | 40.11 | c | 60.81 | |||||||||
1989 | 34.23 | a | 39.75 | 54.77 | 66.57 | b | 73.10 | a | 80.20 | 89.06 | 81.59 | b | 77.53 | 63.52 | 52.33 | 44.00 | 63.06 | |||||||||
1990 | 36.79 | c | 39.71 | 50.87 | a | 61.10 | a | 68.06 | 86.69 | d | 85.32 | 82.94 | 76.87 | 62.23 | 48.83 | 32.30 | a | 60.98 | ||||||||
1991 | 34.63 | a | 45.57 | 42.87 | a | 57.32 | b | 68.26 | 77.82 | b | 87.20 | a | 84.58 | 76.33 | 66.74 | 43.17 | 37.10 | 60.13 | ||||||||
1992 | 36.97 | a | 43.64 | a | 50.13 | 65.07 | a | 69.81 | 79.23 | d | 80.85 | e | 84.64 | c | 75.57 | 67.81 | 42.00 | 34.90 | b | 60.88 | ||||||
1993 | 37.80 | a | 40.43 | 48.87 | a | 58.07 | 68.93 | a | 81.00 | b | 87.32 | 81.11 | d | 73.04 | e | 60.38 | b | 44.24 | a | 40.37 | d | 60.13 | ||||
1994 | 42.67 | a | 40.39 | 55.33 | a | 57.77 | 70.83 | b | 88.22 | g | 91.37 | a | 88.46 | c | 78.30 | 60.32 | 43.24 | a | 40.20 | a | 60.81 | a | ||||
1995 | 39.24 | b | 49.64 | 51.55 | b | 55.93 | b | 63.00 | 76.30 | ----- | z | 86.97 | b | 78.57 | b | 64.29 | 55.10 | 44.90 | b | 60.50 | a | |||||
1996 | 41.00 | 49.48 | 52.74 | 63.27 | 77.14 | c | 85.17 | g | 90.84 | 89.13 | 72.26 | c | 61.23 | 46.37 | 37.71 | c | 61.92 | a | ||||||||
1997 | 36.74 | 41.89 | 52.58 | 55.03 | a | 70.42 | 79.86 | a | 85.77 | 81.39 | 75.80 | 61.06 | 49.10 | 37.87 | a | 60.63 | ||||||||||
1998 | 40.71 | 40.61 | 47.97 | 54.21 | a | 68.27 | a | 77.57 | 88.87 | a | 86.67 | a | 79.31 | a | 60.68 | 47.72 | a | 41.93 | b | 61.21 | ||||||
1999 | 43.65 | 45.93 | 57.86 | b | 53.83 | 66.68 | 78.70 | 86.00 | 80.36 | c | 73.77 | 69.20 | a | 58.33 | 41.76 | b | 63.01 | |||||||||
2000 | 40.45 | 45.36 | a | 47.71 | 63.55 | a | 75.87 | a | 85.80 | 89.79 | b | 88.48 | 78.38 | a | 61.19 | 40.90 | 41.14 | b | 63.22 | |||||||
2001 | 38.65 | 42.32 | 51.26 | 59.27 | 74.84 | 83.69 | d | 87.61 | 83.52 | 81.14 | b | 66.53 | a | 52.37 | 36.18 | c | 63.11 | |||||||||
2002 | 36.09 | i | 40.50 | 47.07 | a | 65.93 | a | 72.67 | a | 87.79 | a | 92.03 | a | 86.97 | a | 75.03 | 60.52 | 49.33 | 42.36 | c | 65.47 | a | ||||
2003 | 46.71 | 42.16 | c | 49.37 | a | 60.83 | 72.17 | a | 82.80 | 92.68 | 87.21 | c | 75.70 | 68.19 | 45.68 | b | 41.67 | d | 63.76 | |||||||
2004 | 39.80 | a | 38.31 | 57.28 | b | 59.70 | 71.71 | 83.96 | c | 87.10 | b | 84.10 | 73.23 | 59.57 | a | 45.63 | 39.13 | 61.63 | ||||||||
2005 | 41.97 | 41.93 | 49.45 | 58.73 | 69.33 | a | 77.67 | 90.97 | 82.80 | a | 74.97 | 63.00 | a | 52.17 | 39.87 | 61.90 | ||||||||||
2006 | 42.87 | 47.00 | 46.58 | 62.90 | 75.68 | 85.63 | 86.86 | c | 83.19 | 71.03 | 58.77 | 54.07 | 44.71 | 63.27 | ||||||||||||
2007 | 39.59 | d | 42.71 | 53.55 | 59.80 | 68.47 | a | 84.17 | a | 89.75 | c | 83.18 | c | 76.77 | d | 62.06 | 53.43 | 32.29 | 62.15 | |||||||
2008 | 29.41 | b | 36.46 | a | 46.04 | c | 56.73 | 64.82 | c | 81.38 | a | 89.06 | 87.53 | a | 77.37 | 63.77 | 53.43 | 37.93 | d | 60.33 | ||||||
2009 | 37.57 | a | 42.61 | 52.23 | a | 56.43 | 71.50 | a | 75.96 | c | 88.61 | 85.03 | a | 77.10 | 58.45 | 51.63 | 32.00 | f | 63.38 | a | ||||||
2010 | 33.68 | 36.33 | a | 43.00 | 57.37 | 66.17 | a | 81.62 | a | 87.84 | 80.19 | 78.11 | c | 63.52 | 45.47 | 42.48 | d | 59.65 | ||||||||
2011 | 30.61 | m | 36.85 | a | 48.57 | q | 59.07 | a | 63.81 | 80.53 | 85.94 | 87.42 | 75.87 | 62.63 | a | 46.86 | b | 37.50 | c | 63.65 | b | |||||
2012 | 40.84 | 40.17 | 52.87 | 62.97 | 73.87 | 86.97 | 87.55 | 85.71 | 77.53 | 65.07 | a | 54.60 | 36.43 | c | 63.71 | |||||||||||
2013 | 31.06 | 35.75 | 51.77 | 58.93 | 69.53 | a | 85.89 | b | 88.03 | 82.16 | 73.04 | b | 57.93 | a | 46.96 | c | 32.94 | 59.50 | ||||||||
2014 | 40.87 | 45.89 | 51.94 | 58.83 | 67.87 | 82.87 | 88.71 | 80.26 | 77.43 | 65.00 | 49.23 | d | 39.87 | a | 62.40 | |||||||||||
2015 | 41.26 | 48.50 | 55.16 | 59.63 | 63.27 | a | 81.64 | b | 81.26 | 83.32 | 79.27 | 63.90 | 46.60 | 34.48 | 61.52 | |||||||||||
2016 | 32.77 | 43.31 | 54.11 | c | 58.69 | a | 66.03 | 85.54 | d | 87.17 | a | 79.90 | b | 74.68 | b | 66.03 | 52.93 | 37.58 | 61.56 | |||||||
2017 | 32.71 | 44.64 | 56.52 | 58.03 | 68.10 | 87.38 | a | 86.47 | a | 82.26 | 75.93 | 64.14 | c | 55.69 | d | 46.61 | 63.21 | |||||||||
2018 | 43.16 | 44.07 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 43.62 | j | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 37.37 | 41.28 | 48.56 | 58.29 | 69.06 | 81.15 | 87.00 | 83.61 | 75.66 | 62.80 | 48.22 | 38.66 | 60.77 | |||||||||||||
S.D. | 4.10 | 4.08 | 4.65 | 3.78 | 3.84 | 3.53 | 2.63 | 2.60 | 3.15 | 3.90 | 4.16 | 3.86 | 1.70 | |||||||||||||
SKEW | 0.01 | 0.14 | 0.09 | 0.01 | 0.08 | -0.05 | -0.17 | 0.35 | -0.50 | -0.21 | 0.08 | 0.23 | -0.10 | |||||||||||||
MAX | 46.71 | 49.64 | 57.86 | 66.57 | 77.14 | 87.79 | 92.68 | 89.13 | 81.87 | 71.77 | 58.33 | 48.90 | 63.76 | |||||||||||||
MIN | 27.03 | 32.96 | 39.03 | 49.31 | 60.77 | 73.93 | 80.85 | 78.39 | 66.80 | 53.13 | 39.80 | 31.52 | 57.42 | |||||||||||||
YRS | 61 | 64 | 62 | 65 | 66 | 63 | 65 | 67 | 67 | 66 | 67 | 63 | 53 |