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 | 48.37 | 50.02 | 57.12 | 70.74 | 66.56 | 65.78 | 50.77 | 45.38 | a | 37.53 | 54.70 | c | ||||||||
1954 | 37.42 | 41.21 | 41.39 | 51.13 | 59.44 | 60.28 | 70.02 | 64.32 | 58.28 | 49.66 | 42.43 | 33.58 | 50.76 | |||||||||||||
1955 | 29.50 | 35.86 | 41.24 | 43.17 | 54.97 | 65.77 | 66.44 | 70.77 | 60.28 | 53.06 | 41.08 | 37.73 | 49.99 | |||||||||||||
1956 | 39.63 | 34.98 | 42.87 | 50.28 | 56.42 | 62.52 | 71.50 | 66.44 | 61.77 | 49.74 | 39.95 | 32.27 | 50.70 | |||||||||||||
1957 | 28.19 | 40.05 | 43.11 | 48.33 | 55.25 | c | 65.98 | b | 67.47 | 64.89 | 63.28 | 46.03 | 36.87 | 34.48 | 49.50 | |||||||||||
1958 | 34.06 | 41.84 | 38.44 | 46.12 | 59.26 | 63.00 | 72.21 | 71.82 | 61.20 | 54.90 | 40.35 | 38.78 | a | 51.83 | ||||||||||||
1959 | 37.24 | 37.21 | 43.85 | 51.30 | 53.08 | 65.53 | 73.32 | 68.31 | 59.73 | 54.56 | 41.82 | 32.52 | b | 51.54 | ||||||||||||
1960 | 34.29 | 38.16 | 46.06 | 46.65 | 52.95 | a | 65.00 | 73.08 | 68.76 | 63.40 | 51.80 | a | 39.90 | 33.21 | 51.10 | |||||||||||
1961 | 37.32 | 41.88 | 42.06 | 49.02 | a | 52.95 | a | 68.27 | 70.47 | 70.02 | 58.02 | 50.39 | 39.23 | 34.35 | 51.16 | |||||||||||
1962 | 31.34 | b | 37.57 | a | 41.88 | c | 51.80 | 53.27 | 63.23 | 69.31 | 67.32 | 64.33 | 51.21 | 43.45 | 35.98 | 50.89 | ||||||||||
1963 | 31.81 | 45.48 | 41.50 | 43.60 | 56.84 | 62.33 | 65.97 | 67.69 | 65.17 | 52.85 | 41.20 | 36.15 | a | 50.88 | ||||||||||||
1964 | 33.44 | 37.26 | 40.87 | 46.88 | 53.18 | 61.33 | 69.81 | 67.97 | 59.52 | 55.29 | 39.73 | 38.02 | 50.27 | |||||||||||||
1965 | 34.81 | 39.71 | 44.26 | 48.25 | 54.23 | 62.64 | a | 69.26 | 67.05 | 59.68 | 55.45 | 41.98 | 32.52 | 50.82 | ||||||||||||
1966 | 34.41 | c | 36.45 | 43.93 | a | 50.54 | b | ----- | z | 62.00 | 66.13 | 69.73 | 62.33 | 52.55 | 42.35 | 36.18 | 50.60 | a | ||||||||
1967 | 35.76 | 40.38 | 40.40 | b | 38.75 | b | 56.65 | 64.00 | 73.10 | 73.63 | 66.28 | a | 52.38 | a | 43.55 | b | 26.55 | a | 50.95 | |||||||
1968 | 32.29 | 43.28 | 45.00 | 49.48 | a | 55.12 | b | 65.47 | 71.93 | a | 65.16 | b | 62.93 | 51.80 | d | 40.07 | c | 32.29 | 51.23 | |||||||
1969 | 31.63 | 34.86 | 41.90 | 47.29 | b | 58.75 | a | 63.83 | c | 70.27 | 68.14 | c | 63.60 | 47.74 | 40.93 | 37.85 | 50.57 | |||||||||
1970 | 38.56 | 41.64 | 43.40 | 43.50 | 57.45 | 65.72 | 71.85 | 69.17 | a | 59.11 | c | 50.94 | 43.09 | b | ----- | z | 53.13 | a | ||||||||
1971 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 68.54 | c | 68.68 | 58.28 | 48.56 | 40.90 | 31.60 | a | 52.76 | f | ||||
1972 | 32.87 | 40.07 | 47.79 | 45.95 | a | 56.18 | 62.62 | 68.32 | 66.68 | 57.23 | 49.34 | 39.80 | 29.40 | 49.69 | ||||||||||||
1973 | 34.19 | 40.12 | 40.86 | b | 47.67 | 58.61 | 62.60 | 68.76 | 65.87 | 59.98 | 50.18 | 41.70 | 39.44 | 50.83 | ||||||||||||
1974 | 31.87 | a | 37.36 | 42.56 | 45.80 | 53.29 | 64.59 | a | 66.32 | 67.18 | 64.10 | 51.39 | 40.87 | 34.63 | 50.00 | |||||||||||
1975 | 34.02 | 37.39 | 40.55 | 40.38 | d | 54.05 | 59.12 | a | 68.24 | 64.60 | 64.21 | a | 49.58 | 38.45 | 36.16 | 48.90 | ||||||||||
1976 | 35.58 | 38.84 | 40.56 | 44.55 | 54.89 | 57.95 | 68.40 | 63.12 | a | 62.72 | 52.55 | 42.62 | a | 34.42 | 49.68 | |||||||||||
1977 | 27.21 | 41.21 | 39.50 | 50.02 | 48.16 | 65.90 | 67.39 | 70.52 | c | 60.07 | 51.60 | 40.93 | a | 38.74 | 50.10 | |||||||||||
1978 | 39.81 | 40.39 | 47.47 | 45.23 | 52.60 | 60.57 | 67.31 | 66.03 | 57.33 | 53.95 | 38.17 | 31.10 | 50.00 | |||||||||||||
1979 | 33.31 | 38.61 | 44.47 | 47.41 | a | 56.03 | 61.83 | 66.97 | 64.89 | 63.15 | 54.23 | 38.97 | 37.44 | 50.61 | ||||||||||||
1980 | 35.75 | a | 42.47 | 40.69 | 49.10 | 53.23 | 57.69 | a | 68.18 | 65.21 | 61.37 | c | 53.18 | 42.17 | 37.81 | 50.57 | ||||||||||
1981 | 38.16 | 40.62 | 42.92 | a | 49.83 | 54.58 | 62.00 | 67.23 | 69.23 | 62.28 | 48.94 | 42.84 | a | 40.71 | 51.61 | |||||||||||
1982 | 32.10 | 39.11 | a | 40.48 | a | 44.25 | 54.65 | a | 61.02 | a | 65.88 | a | 66.23 | a | 56.50 | 50.18 | 38.30 | 33.90 | a | 48.55 | ||||||
1983 | 36.74 | 40.78 | a | 43.08 | 43.43 | 55.13 | a | 58.98 | 62.87 | a | 66.39 | 59.58 | 52.06 | 41.46 | c | 37.12 | a | 49.80 | ||||||||
1984 | 34.27 | 39.40 | 45.31 | b | 46.92 | 55.43 | a | 58.92 | 69.00 | 66.95 | a | 60.02 | 47.82 | 38.83 | 33.03 | 49.66 | ||||||||||
1985 | 34.60 | 38.70 | a | 40.79 | 53.02 | 54.85 | 65.07 | 71.52 | b | 65.94 | 56.80 | 50.66 | 34.26 | a | 34.75 | a | 50.08 | |||||||||
1986 | 41.48 | e | 42.43 | 47.58 | 48.58 | 56.73 | 65.69 | a | 67.89 | 70.98 | 55.33 | 52.23 | 42.12 | 34.47 | 52.13 | |||||||||||
1987 | 34.37 | a | 38.54 | 42.23 | a | 53.53 | 57.18 | a | 65.67 | 63.53 | 68.55 | 60.08 | 56.42 | 42.38 | 35.43 | a | 51.49 | |||||||||
1988 | 34.34 | 41.60 | 44.45 | 50.28 | 52.68 | 60.88 | 70.10 | 68.48 | a | 61.63 | 57.60 | 41.68 | 34.40 | 51.51 | ||||||||||||
1989 | 32.39 | 34.36 | 43.52 | 52.18 | 53.90 | 63.08 | 65.50 | 64.76 | 60.07 | 50.44 | 40.72 | 34.66 | 49.63 | |||||||||||||
1990 | 36.06 | 34.23 | 45.03 | 53.90 | a | 51.68 | 59.88 | 69.71 | 64.38 | g | 62.33 | 52.32 | 38.52 | 28.82 | 48.41 | a | ||||||||||
1991 | 34.95 | 43.20 | 39.98 | 45.65 | 50.55 | 57.60 | 70.05 | 66.60 | 64.50 | 54.65 | 42.47 | 34.45 | 50.39 | |||||||||||||
1992 | 36.71 | 42.47 | 46.61 | 52.10 | 60.56 | 62.59 | b | 67.60 | 68.66 | 61.77 | 53.35 | 39.84 | a | 33.42 | 52.14 | |||||||||||
1993 | 31.03 | 36.64 | 46.95 | 46.42 | 54.58 | 58.18 | 61.50 | 64.90 | 61.08 | 52.73 | 37.90 | 34.68 | 48.88 | |||||||||||||
1994 | 36.00 | 37.80 | 45.44 | 49.78 | 56.95 | 60.58 | 70.45 | 65.98 | 62.35 | 50.06 | 34.82 | 34.92 | 50.43 | |||||||||||||
1995 | 40.71 | 45.12 | 42.23 | 46.59 | a | 53.95 | 58.95 | 65.87 | a | 64.38 | b | 61.72 | 51.24 | 46.67 | a | 39.40 | 51.40 | |||||||||
1996 | 36.58 | 42.45 | 45.11 | 47.80 | 53.02 | 60.83 | 71.06 | 68.26 | 59.20 | 50.94 | 43.00 | a | 38.53 | a | 51.40 | |||||||||||
1997 | 35.42 | 39.16 | 45.97 | 48.30 | 59.50 | 59.67 | 67.16 | 66.87 | 60.48 | 49.77 | 43.12 | a | 34.18 | a | 50.80 | |||||||||||
1998 | 39.45 | b | 38.84 | 43.84 | 47.00 | 49.52 | 60.40 | 69.52 | 69.16 | 63.78 | a | 48.84 | 40.50 | a | 33.02 | 50.32 | ||||||||||
1999 | 36.11 | 36.37 | a | 40.87 | 46.65 | 53.40 | 58.28 | 65.24 | 65.35 | 60.93 | 52.17 | a | 45.13 | 34.84 | 49.61 | |||||||||||
2000 | 37.08 | 42.02 | 43.34 | 50.90 | 53.57 | a | 63.68 | 65.94 | 66.90 | 59.85 | 49.74 | 36.53 | 35.35 | 50.41 | ||||||||||||
2001 | 35.18 | 35.80 | 45.08 | a | 46.80 | 60.00 | 60.07 | 67.63 | 69.06 | 62.28 | 54.05 | 41.50 | a | 36.63 | 51.17 | |||||||||||
2002 | 34.53 | 40.52 | 41.58 | 49.88 | 53.69 | 62.47 | a | 70.52 | 66.35 | 61.35 | 49.61 | 42.07 | 36.56 | 50.76 | ||||||||||||
2003 | 40.74 | 38.88 | 45.15 | 43.22 | 54.40 | 64.05 | 71.37 | 67.15 | 62.88 | a | 54.26 | 38.67 | 37.52 | 51.52 | ||||||||||||
2004 | 36.11 | 39.17 | 47.94 | 50.13 | 54.18 | 62.02 | b | 69.47 | 67.45 | 59.13 | 50.60 | 38.80 | 36.24 | 50.94 | ||||||||||||
2005 | 34.24 | 40.35 | a | 45.21 | 46.80 | 55.09 | b | 57.28 | 70.12 | a | 68.48 | 58.72 | 50.97 | a | 40.00 | 35.53 | a | 50.23 | ||||||||
2006 | 36.71 | 38.48 | 37.27 | 46.97 | 55.57 | a | 64.93 | 71.45 | 66.00 | 60.97 | 49.60 | 42.21 | a | 35.38 | c | 50.46 | ||||||||||
2007 | 32.48 | 38.59 | 46.55 | 49.93 | 56.76 | 62.33 | 70.58 | 67.02 | 59.70 | 49.57 | b | 42.67 | 34.23 | a | 50.87 | |||||||||||
2008 | 33.00 | 38.62 | a | 42.15 | 45.77 | 55.55 | 61.18 | 67.93 | a | 68.35 | a | 61.72 | 52.00 | 42.33 | 33.48 | a | 50.17 | |||||||||
2009 | 36.24 | 39.11 | a | 42.52 | 48.40 | 57.72 | b | 61.30 | 69.58 | 66.79 | 63.87 | 49.95 | 39.95 | 31.19 | 50.55 | |||||||||||
2010 | 38.80 | a | 40.82 | 43.24 | 44.48 | 48.71 | 59.81 | a | 69.42 | 66.60 | 60.22 | 53.66 | 39.47 | 38.97 | b | 50.35 | ||||||||||
2011 | 36.15 | 36.35 | a | 42.08 | 46.07 | 49.97 | 58.40 | 66.42 | 67.84 | 63.42 | 50.77 | 39.68 | 31.42 | a | 49.05 | |||||||||||
2012 | 35.90 | a | 39.17 | 41.57 | a | 49.87 | 54.47 | a | 59.02 | 67.42 | 68.82 | 62.93 | 51.92 | a | 41.62 | ----- | z | 52.06 | a | |||||||
2013 | 31.13 | 37.33 | a | 44.60 | 49.37 | 55.85 | 62.65 | 70.61 | 65.26 | 59.87 | 46.56 | 40.50 | 28.84 | 49.38 | ||||||||||||
2014 | 34.63 | 40.80 | 45.00 | 49.77 | 56.13 | 61.63 | 72.06 | 66.32 | 61.68 | 52.42 | 40.71 | a | 38.48 | 51.64 | ||||||||||||
2015 | 38.58 | 42.39 | 47.50 | 48.00 | a | 55.13 | a | 66.73 | 68.74 | 66.68 | a | 62.25 | 57.00 | 39.47 | 37.27 | 52.48 | ||||||||||
2016 | 37.93 | a | 42.40 | 46.60 | a | 54.35 | 57.84 | 65.57 | 69.52 | 70.55 | 60.83 | 50.60 | a | 45.55 | 32.68 | 52.87 | ||||||||||
2017 | 32.84 | 41.02 | a | 47.34 | 48.08 | 58.84 | 65.80 | 71.71 | 71.34 | 63.03 | 51.08 | 44.02 | a | 33.00 | b | 52.34 | ||||||||||
2018 | 40.76 | 39.02 | 42.38 | f | 50.70 | b | 60.17 | a | 63.17 | 71.45 | 68.92 | 60.88 | 52.74 | b | 42.11 | b | ----- | z | 54.99 | b | ||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 35.17 | 39.48 | 43.39 | 47.94 | 54.99 | 62.11 | 68.86 | 67.45 | 61.20 | 51.59 | 40.91 | 34.89 | 50.64 | |||||||||||||
S.D. | 3.01 | 2.49 | 2.49 | 3.08 | 2.76 | 2.72 | 2.48 | 2.05 | 2.28 | 2.34 | 2.32 | 2.85 | 0.92 | |||||||||||||
SKEW | -0.13 | -0.01 | -0.00 | -0.37 | -0.18 | 0.03 | -0.53 | 0.52 | -0.18 | 0.26 | -0.29 | -0.43 | 0.06 | |||||||||||||
MAX | 41.48 | 45.48 | 47.94 | 54.35 | 60.56 | 68.27 | 73.32 | 73.63 | 66.28 | 57.60 | 46.67 | 40.71 | 52.87 | |||||||||||||
MIN | 27.21 | 34.23 | 37.27 | 38.75 | 48.16 | 57.12 | 61.50 | 63.12 | 55.33 | 46.03 | 34.26 | 26.55 | 48.55 | |||||||||||||
YRS | 64 | 64 | 63 | 65 | 64 | 65 | 66 | 65 | 66 | 66 | 66 | 63 | 59 |