YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1943 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1944 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1945 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | ----- | 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 | 65.93 | 64.61 | 74.43 | 95.06 | 87.35 | 88.30 | 68.42 | 53.90 | a | 49.03 | 71.89 | c | ||||||||
1954 | 46.03 | 55.07 | 55.10 | 68.60 | 81.19 | 78.40 | 92.81 | 84.55 | 80.07 | 69.26 | 56.10 | 42.68 | 67.49 | |||||||||||||
1955 | 39.26 | 48.14 | 56.81 | 57.50 | 74.94 | 86.47 | 88.19 | 95.16 | 81.70 | 71.90 | 53.90 | 47.58 | 66.80 | |||||||||||||
1956 | 51.39 | 47.31 | 59.19 | 67.70 | 75.13 | 83.83 | 93.71 | 87.94 | 82.90 | 64.87 | 54.87 | 44.10 | 67.74 | |||||||||||||
1957 | 39.81 | 52.36 | 53.87 | 64.27 | 71.07 | c | 87.89 | b | 89.94 | 88.26 | 85.47 | 59.26 | 50.37 | 46.00 | 65.71 | |||||||||||
1958 | 43.68 | 52.50 | 51.58 | 62.87 | 80.68 | 80.27 | 92.23 | 93.06 | 81.87 | 75.29 | 52.37 | 50.07 | a | 68.04 | ||||||||||||
1959 | 47.26 | 48.86 | 61.13 | 72.27 | 72.23 | 86.80 | 97.19 | 91.00 | 77.60 | 73.84 | 60.07 | 43.86 | b | 69.34 | ||||||||||||
1960 | 43.26 | 50.00 | 60.13 | 62.17 | 70.27 | a | 90.43 | 97.39 | 92.65 | 87.30 | 70.40 | a | 52.47 | 44.84 | 68.44 | |||||||||||
1961 | 50.13 | 52.00 | 53.45 | 66.38 | a | 68.57 | a | 89.40 | 93.84 | 90.81 | 78.40 | 68.84 | 52.73 | 42.74 | 67.27 | |||||||||||
1962 | 43.14 | b | 48.43 | 55.14 | c | 70.73 | 69.26 | 85.60 | 92.77 | 87.90 | 86.70 | 66.58 | 54.67 | 44.45 | 67.11 | |||||||||||
1963 | 44.71 | 56.93 | 54.13 | 54.90 | 72.74 | 81.07 | 86.29 | 88.71 | 85.13 | 66.32 | 50.07 | 45.52 | 65.54 | |||||||||||||
1964 | 42.55 | 52.59 | 55.65 | 66.50 | 71.00 | 79.20 | 91.55 | 91.13 | 83.30 | 75.26 | 50.20 | 45.23 | 67.01 | |||||||||||||
1965 | 42.35 | 54.36 | 60.74 | 60.80 | 73.45 | 82.45 | a | 91.77 | 85.42 | 81.90 | 76.97 | 52.37 | 41.16 | 66.98 | ||||||||||||
1966 | 45.24 | b | 48.25 | 58.90 | a | 70.82 | b | ----- | z | 81.80 | 88.55 | 93.00 | 83.57 | 73.13 | 51.87 | 45.00 | 67.28 | a | ||||||||
1967 | 46.00 | 55.32 | 54.41 | b | 50.34 | a | 76.81 | 82.87 | 94.84 | 96.35 | 88.10 | 69.23 | a | 56.04 | b | 37.03 | a | 67.28 | ||||||||
1968 | 42.84 | 55.07 | 59.84 | 67.24 | a | 73.66 | b | 86.70 | 94.71 | 83.45 | b | 84.87 | 68.86 | b | 49.89 | c | 41.52 | 67.39 | ||||||||
1969 | 40.19 | 44.04 | 57.48 | 63.21 | b | 79.23 | a | 81.25 | b | 92.45 | 93.14 | b | 84.77 | 64.03 | 55.17 | 46.97 | 66.83 | |||||||||
1970 | 46.42 | 54.39 | 58.06 | 58.33 | 76.84 | 84.50 | 94.45 | 93.13 | 81.67 | c | 69.61 | 54.86 | b | ----- | z | 70.21 | a | |||||||||
1971 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 86.11 | c | 87.10 | 76.07 | 62.87 | 51.20 | 39.77 | a | 67.18 | f | ||||
1972 | 43.19 | 50.55 | 60.68 | 59.38 | a | 73.45 | 80.47 | 88.16 | 85.35 | 74.20 | 63.58 | 49.40 | 37.90 | 63.86 | ||||||||||||
1973 | 42.65 | 49.21 | 52.34 | b | 64.07 | 76.10 | 79.97 | 88.00 | 85.71 | 77.93 | 64.26 | 48.67 | 46.58 | 64.62 | ||||||||||||
1974 | 41.48 | 48.14 | 53.61 | 59.70 | 69.90 | 82.10 | 83.61 | 85.55 | 83.97 | 68.00 | 51.47 | 43.74 | 64.27 | |||||||||||||
1975 | 44.00 | 47.00 | 50.29 | 52.73 | d | 71.10 | 77.62 | a | 84.65 | 81.84 | 83.07 | a | 61.81 | 47.83 | 43.16 | 62.09 | ||||||||||
1976 | 44.26 | 50.17 | 54.10 | 58.17 | 73.19 | 75.13 | 85.52 | 76.87 | a | 78.47 | 68.81 | 54.00 | a | 46.94 | 63.80 | |||||||||||
1977 | 36.90 | 54.46 | 51.48 | 67.13 | 61.00 | 82.00 | 85.68 | 87.59 | b | 75.60 | 66.90 | 52.31 | a | 46.90 | 64.00 | |||||||||||
1978 | 48.26 | 51.25 | 60.06 | 56.37 | 69.10 | 77.13 | 84.68 | 82.65 | 72.00 | 71.94 | 49.53 | 41.39 | 63.70 | |||||||||||||
1979 | 43.00 | 48.21 | 57.19 | 59.59 | a | 72.32 | 80.37 | 84.45 | 81.26 | 81.13 | 66.77 | 48.77 | 46.35 | 64.12 | ||||||||||||
1980 | 45.61 | 51.72 | 52.74 | 63.90 | 68.13 | 72.48 | a | 85.29 | 83.84 | 79.41 | c | 68.97 | 53.93 | 46.94 | 64.41 | |||||||||||
1981 | 45.74 | 51.71 | 55.50 | a | 64.70 | 69.19 | 79.27 | 86.42 | 89.13 | 79.53 | 62.42 | 51.17 | a | 48.29 | 65.26 | |||||||||||
1982 | 41.35 | 50.36 | 51.27 | a | 58.93 | 72.17 | a | 75.69 | a | 83.17 | a | 84.63 | a | 72.03 | 63.84 | 47.63 | 42.00 | a | 61.92 | |||||||
1983 | 45.26 | 48.63 | a | 51.94 | 54.90 | 71.80 | a | 75.90 | 80.43 | a | 82.74 | 76.27 | 66.35 | 49.00 | a | 43.94 | 62.26 | |||||||||
1984 | 43.97 | 50.38 | 58.60 | a | 59.17 | 71.87 | a | 75.43 | 87.74 | 85.70 | a | 79.10 | 60.94 | 46.77 | 41.55 | 63.43 | ||||||||||
1985 | 45.61 | 51.89 | a | 54.52 | 69.53 | 71.16 | 82.77 | 89.79 | b | 84.03 | 71.80 | 66.03 | 43.83 | a | 45.26 | 64.69 | ||||||||||
1986 | 51.72 | b | 51.43 | 60.81 | 62.70 | 71.42 | 81.83 | a | 84.58 | 89.58 | 70.23 | 68.32 | 54.17 | 42.58 | 65.78 | |||||||||||
1987 | 45.13 | a | 50.14 | 54.81 | 71.03 | 73.52 | 84.13 | 81.61 | 88.94 | 78.47 | 73.81 | 53.10 | 42.90 | a | 66.47 | |||||||||||
1988 | 42.84 | 56.86 | 61.68 | 63.90 | 68.16 | 76.70 | 89.48 | 88.40 | a | 81.73 | 76.45 | 51.27 | 45.39 | 66.91 | ||||||||||||
1989 | 43.03 | 46.82 | 54.52 | 68.10 | 69.32 | 80.63 | 85.29 | 83.16 | 78.13 | 65.48 | 53.90 | 47.23 | 64.64 | |||||||||||||
1990 | 46.06 | 46.32 | 59.61 | 69.83 | a | 67.45 | 77.33 | 87.65 | 80.88 | g | 81.30 | 68.94 | 50.23 | 39.48 | 63.11 | a | ||||||||||
1991 | 47.13 | 56.64 | 50.74 | 59.03 | 65.29 | 75.33 | 88.16 | 84.84 | 85.13 | 71.97 | 54.20 | 43.23 | 65.14 | |||||||||||||
1992 | 46.45 | 53.90 | 59.71 | 66.60 | 79.06 | 78.82 | b | 85.06 | 89.03 | 80.47 | 68.81 | 50.70 | 41.16 | 66.65 | ||||||||||||
1993 | 40.16 | 46.29 | 58.77 | 58.93 | 67.71 | 74.90 | 80.65 | 83.45 | 81.43 | 68.10 | 51.53 | 43.19 | 62.93 | |||||||||||||
1994 | 46.29 | 48.86 | 61.32 | 64.93 | 72.03 | 79.03 | 90.35 | 86.94 | 81.17 | 66.87 | 43.43 | 43.77 | 65.42 | |||||||||||||
1995 | 47.81 | 59.54 | 53.16 | 60.24 | a | 67.84 | 74.57 | 83.07 | a | 84.43 | a | 80.53 | 69.45 | 60.03 | 45.97 | 65.55 | ||||||||||
1996 | 43.61 | 52.28 | 59.19 | 62.57 | 68.42 | 79.37 | 89.90 | 88.74 | 77.03 | 65.74 | 54.43 | 46.58 | 65.66 | |||||||||||||
1997 | 44.42 | 50.00 | 60.23 | 62.73 | 76.32 | 76.13 | 85.06 | 84.45 | 76.83 | 63.06 | 52.66 | a | 43.10 | 64.58 | ||||||||||||
1998 | 46.23 | a | 45.64 | 54.87 | 60.53 | 60.65 | 77.00 | 87.74 | 88.74 | 80.79 | a | 63.52 | 48.14 | a | 42.39 | 63.02 | ||||||||||
1999 | 45.87 | 44.96 | 51.58 | 61.43 | 70.52 | 77.90 | 85.90 | 83.23 | 81.47 | 71.10 | a | 55.00 | 44.87 | 64.49 | ||||||||||||
2000 | 45.84 | 51.34 | 56.45 | 66.50 | 69.03 | a | 82.53 | 84.10 | 87.03 | 78.20 | 65.71 | 47.40 | 45.32 | 64.96 | ||||||||||||
2001 | 46.32 | 46.32 | 59.84 | 59.10 | 79.65 | 78.73 | 86.94 | 89.03 | 81.90 | 71.55 | 52.47 | 44.71 | 66.38 | |||||||||||||
2002 | 44.52 | 53.57 | 56.81 | 66.07 | 70.68 | 81.45 | a | 90.65 | 87.13 | 81.87 | 68.77 | 54.70 | 45.03 | 66.77 | ||||||||||||
2003 | 49.48 | 50.93 | 58.23 | 54.93 | 70.97 | 83.63 | 91.68 | 84.97 | 83.52 | a | 72.03 | 49.00 | 45.58 | 66.25 | ||||||||||||
2004 | 44.94 | 49.24 | 64.23 | 66.50 | 71.06 | 80.29 | b | 88.71 | 86.90 | 79.13 | 65.94 | 49.83 | 45.77 | 66.05 | ||||||||||||
2005 | 43.23 | 52.37 | a | 59.68 | 61.23 | 69.40 | a | 73.30 | 90.57 | a | 88.97 | 79.17 | 67.63 | a | 50.70 | 43.53 | a | 64.98 | ||||||||
2006 | 44.74 | 51.04 | 46.35 | 60.30 | 72.57 | a | 83.17 | 91.26 | 85.81 | 82.03 | 67.35 | 52.59 | a | 45.71 | 65.24 | |||||||||||
2007 | 44.77 | 49.57 | 62.68 | 66.63 | 75.06 | 80.47 | 89.13 | 86.87 | 78.50 | 62.72 | b | 55.03 | 43.13 | 66.21 | ||||||||||||
2008 | 41.58 | 51.24 | 56.42 | 62.63 | 71.87 | 80.17 | 87.70 | a | 87.93 | a | 82.87 | 69.35 | 53.60 | 44.84 | 65.85 | |||||||||||
2009 | 48.74 | 50.54 | 56.74 | 65.37 | 75.41 | b | 78.27 | 90.90 | 87.90 | 85.23 | 65.71 | 51.83 | 41.39 | 66.50 | ||||||||||||
2010 | 46.97 | 50.93 | 56.84 | 58.20 | 63.55 | 76.57 | 90.48 | 86.90 | 80.37 | 68.81 | 50.40 | 46.74 | 64.73 | |||||||||||||
2011 | 48.48 | 49.07 | 51.81 | 59.33 | 64.94 | 75.83 | 84.84 | 88.65 | 84.93 | 67.32 | 52.63 | 46.58 | 64.53 | |||||||||||||
2012 | 48.58 | 52.79 | 53.52 | 62.77 | 73.39 | 76.33 | 87.32 | 90.97 | 85.57 | 69.97 | 53.33 | ----- | z | 68.59 | a | |||||||||||
2013 | 43.81 | 52.11 | 61.03 | 65.73 | 73.03 | 81.90 | 91.87 | 85.87 | 77.77 | 66.03 | 55.83 | 43.23 | 66.52 | |||||||||||||
2014 | 48.71 | 53.68 | 60.10 | 67.07 | 74.68 | 82.33 | 93.97 | 87.45 | 82.77 | 69.90 | 53.55 | a | 49.06 | 68.61 | ||||||||||||
2015 | 52.74 | 57.04 | 65.16 | 66.53 | 73.10 | 88.17 | 88.39 | 87.61 | 83.07 | 74.29 | 51.73 | 44.97 | 69.40 | |||||||||||||
2016 | 45.35 | 54.41 | 57.74 | 69.33 | 72.97 | 83.73 | 90.03 | 92.61 | 81.87 | 63.68 | 56.63 | 41.52 | 67.49 | |||||||||||||
2017 | 41.84 | 49.93 | 59.32 | 60.03 | 76.23 | 83.33 | 93.13 | 91.58 | 80.37 | 69.39 | 53.53 | 44.27 | a | 66.91 | ||||||||||||
2018 | 50.81 | 52.11 | 55.27 | e | 64.07 | b | 75.94 | 82.80 | 92.03 | 89.87 | 82.37 | 69.53 | a | 57.00 | b | ----- | z | 70.16 | a | |||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 45.06 | 51.05 | 56.71 | 62.98 | 71.77 | 80.41 | 88.78 | 87.46 | 80.76 | 68.07 | 52.15 | 44.31 | 65.69 | |||||||||||||
S.D. | 3.09 | 3.21 | 3.78 | 4.74 | 4.26 | 4.05 | 3.95 | 3.56 | 3.87 | 3.81 | 3.16 | 2.58 | 1.72 | |||||||||||||
SKEW | 0.15 | 0.20 | -0.17 | -0.27 | -0.21 | 0.31 | 0.05 | 0.02 | -0.53 | 0.18 | -0.20 | -0.38 | -0.10 | |||||||||||||
MAX | 52.74 | 59.54 | 65.16 | 72.27 | 81.19 | 90.43 | 97.39 | 96.35 | 88.30 | 76.97 | 60.07 | 50.07 | 69.40 | |||||||||||||
MIN | 36.90 | 44.04 | 46.35 | 50.34 | 60.65 | 72.48 | 80.43 | 76.87 | 70.23 | 59.26 | 43.43 | 37.03 | 61.92 | |||||||||||||
YRS | 64 | 64 | 64 | 65 | 64 | 65 | 66 | 65 | 66 | 66 | 66 | 63 | 59 |