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 | ----- | 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 | 39.29 | l | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1963 | ----- | z | 43.25 | p | 47.55 | c | 55.93 | b | 66.77 | i | 70.35 | c | 77.88 | b | 72.43 | b | 69.59 | h | 60.85 | d | 48.21 | a | 38.62 | r | 61.89 | e |
1964 | 34.33 | h | 36.06 | d | 45.56 | 52.85 | c | 63.64 | b | 70.56 | f | 76.00 | 73.24 | b | 66.12 | a | 58.20 | a | 43.87 | c | 36.67 | m | 57.28 | c | ||
1965 | 41.71 | q | 38.20 | h | 44.58 | a | 55.25 | 61.27 | 68.22 | a | 75.77 | ----- | z | ----- | z | ----- | z | 49.35 | q | 41.10 | 57.70 | f | ||||
1966 | 36.45 | 35.87 | b | 48.98 | c | 56.08 | 64.08 | e | 75.79 | b | 77.10 | 73.07 | c | 67.37 | d | 57.93 | c | 51.85 | 40.17 | b | 57.06 | |||||
1967 | 42.05 | b | 45.79 | 53.38 | e | 56.38 | 62.48 | 71.87 | g | 77.76 | 73.69 | 68.42 | 60.52 | 49.72 | 37.26 | 57.04 | a | |||||||||
1968 | 40.02 | 47.10 | 47.52 | 53.15 | 63.32 | 71.95 | 75.15 | d | 70.31 | 65.17 | 59.40 | 47.58 | 37.63 | 56.52 | ||||||||||||
1969 | 44.22 | a | 42.11 | 44.44 | 57.13 | 65.42 | 72.63 | c | 78.89 | 78.60 | 71.42 | 58.11 | 45.95 | 41.58 | 58.37 | |||||||||||
1970 | 38.82 | 44.83 | a | 46.58 | 53.24 | g | 65.35 | 73.10 | 77.53 | 76.35 | 68.58 | 54.67 | e | 47.50 | 43.15 | 57.86 | a | |||||||||
1971 | 41.48 | 42.95 | 50.53 | 55.38 | 62.42 | 74.08 | e | 78.87 | 73.31 | 69.47 | 56.16 | 47.33 | a | 40.10 | 57.67 | |||||||||||
1972 | 42.10 | 44.84 | d | 56.92 | 58.26 | e | 63.73 | 72.18 | 76.89 | 73.95 | c | 67.20 | 61.42 | 43.36 | e | 40.08 | g | 60.08 | a | |||||||
1973 | 37.26 | 41.35 | k | 44.94 | 51.87 | 64.95 | l | 72.18 | 75.71 | 74.28 | b | 71.12 | 58.85 | 48.67 | 41.47 | 57.63 | b | |||||||||
1974 | 41.73 | a | 41.36 | 54.81 | 56.98 | 68.53 | 76.86 | b | 74.74 | h | 72.35 | 66.45 | 57.68 | 47.00 | 38.23 | 56.54 | a | |||||||||
1975 | 39.03 | a | 41.98 | 48.61 | ----- | z | 64.14 | f | 72.38 | 74.24 | 75.18 | 69.03 | 58.35 | 47.05 | 40.95 | 56.68 | b | |||||||||
1976 | 39.39 | 46.83 | 48.18 | 55.72 | 63.90 | 72.25 | 73.79 | 73.98 | 66.42 | 53.73 | 44.50 | 37.89 | 56.38 | |||||||||||||
1977 | 38.60 | 44.14 | 43.92 | 56.65 | 63.02 | 74.40 | 75.90 | 77.69 | 71.27 | 63.21 | l | 51.12 | 49.39 | 58.74 | a | |||||||||||
1978 | 41.78 | h | 44.32 | k | 51.89 | 57.32 | 64.70 | a | 75.85 | 78.95 | a | 73.88 | a | 67.68 | 62.97 | o | 48.90 | 37.71 | 61.88 | c | ||||||
1979 | 37.58 | a | 43.66 | 48.15 | 56.22 | 61.89 | 71.98 | 76.81 | 72.59 | i | 69.57 | a | 61.11 | 43.03 | 40.24 | 55.48 | a | |||||||||
1980 | 41.27 | 44.52 | 47.16 | b | 54.20 | 61.66 | 75.82 | 80.13 | 76.88 | b | 70.37 | 56.31 | 47.02 | 44.50 | a | 58.32 | ||||||||||
1981 | 43.61 | 45.68 | 47.45 | 57.83 | 64.31 | e | 76.05 | 77.52 | 73.40 | 68.52 | d | 57.84 | b | 51.77 | b | 45.32 | 59.11 | |||||||||
1982 | 40.95 | b | 44.67 | a | 48.96 | c | 55.62 | 62.39 | c | 70.26 | c | 76.80 | a | ----- | z | 69.65 | f | 55.35 | d | 45.80 | g | 37.10 | e | 54.68 | c | |
1983 | 39.48 | a | 42.76 | c | 46.16 | b | 49.09 | c | 59.64 | f | 67.32 | e | 75.65 | 73.80 | c | 71.53 | 57.16 | 45.98 | 40.30 | a | 55.39 | a | ||||
1984 | 39.87 | a | 41.48 | 48.00 | 53.87 | 69.93 | c | 70.60 | 74.70 | a | 71.54 | f | 68.73 | 55.65 | a | 47.80 | 44.21 | 55.89 | a | |||||||
1985 | 40.87 | 41.57 | 50.57 | a | 58.77 | 64.00 | 75.52 | 75.00 | f | 68.48 | d | 62.17 | 57.23 | g | 52.23 | s | 41.30 | d | 55.92 | c | ||||||
1986 | 44.79 | 46.37 | a | 51.21 | 59.12 | 64.10 | e | 72.30 | e | 73.87 | 76.61 | 67.13 | 58.16 | 46.00 | 39.39 | l | 59.97 | a | ||||||||
1987 | 38.87 | 41.14 | 45.19 | 56.02 | d | 62.64 | c | 72.23 | b | 74.40 | 72.78 | d | 68.63 | 62.37 | a | 46.13 | 38.29 | 56.56 | ||||||||
1988 | 38.97 | 46.63 | f | 49.58 | 54.90 | 64.48 | 72.33 | 74.29 | 72.34 | 66.43 | 62.27 | 47.60 | 37.74 | 58.27 | a | |||||||||||
1989 | 36.89 | i | 47.71 | d | 52.85 | 62.78 | 66.55 | b | 73.28 | g | 72.31 | r | 72.32 | 68.53 | 59.13 | 48.75 | l | 40.95 | 58.85 | d | ||||||
1990 | 41.15 | a | 42.82 | 50.75 | a | 58.77 | 61.43 | j | 78.33 | f | 73.87 | 70.03 | a | 68.24 | c | 58.71 | 48.66 | e | 40.62 | c | 55.36 | b | ||||
1991 | 40.79 | 46.44 | a | 46.69 | b | 55.92 | 61.06 | 70.22 | 72.74 | 72.24 | b | 66.20 | 62.34 | c | 46.66 | b | 41.15 | a | 56.87 | |||||||
1992 | 37.41 | h | 44.59 | 49.56 | 59.12 | 62.89 | h | 70.87 | 75.03 | 73.00 | a | 69.50 | a | 61.31 | 46.24 | e | 39.47 | 58.87 | b | |||||||
1993 | 43.53 | 44.67 | a | 51.06 | 57.52 | 64.62 | e | 72.69 | f | 74.82 | t | 70.94 | w | 67.55 | a | 58.22 | d | 47.22 | g | 42.85 | e | 53.75 | d | |||
1994 | 43.25 | e | 43.16 | c | 51.92 | 57.93 | b | 65.17 | a | 78.40 | a | 77.37 | 77.07 | b | 69.72 | 58.76 | b | 47.97 | a | 44.16 | 59.57 | |||||
1995 | 41.29 | 49.39 | 50.66 | 54.24 | c | 62.35 | 71.43 | 75.02 | 75.73 | a | 69.47 | a | 61.45 | 52.73 | 43.47 | 58.94 | ||||||||||
1996 | 44.06 | 50.43 | 49.98 | 58.78 | 69.19 | 76.65 | 77.18 | 73.27 | 66.18 | 60.32 | c | 50.43 | a | 43.72 | a | 60.02 | ||||||||||
1997 | 41.37 | 44.00 | b | 53.08 | 54.91 | b | 67.93 | a | 72.45 | b | 75.85 | e | 74.24 | b | 71.97 | a | 58.06 | 49.12 | a | 37.81 | 58.40 | |||||
1998 | 43.60 | 42.05 | 48.27 | a | 53.22 | 64.16 | 72.90 | 76.14 | b | 74.35 | 71.97 | a | 59.35 | a | 51.27 | 43.64 | f | 59.75 | a | |||||||
1999 | 45.03 | a | 48.07 | 51.87 | 55.31 | a | 64.87 | 71.10 | 74.29 | 72.33 | a | 68.93 | b | 59.21 | 53.40 | 39.94 | 58.70 | |||||||||
2000 | 46.03 | a | 48.19 | 51.31 | b | 60.80 | b | 70.31 | 73.75 | 76.21 | b | 74.33 | a | 72.10 | 57.65 | a | 42.93 | 42.47 | 59.67 | |||||||
2001 | 38.07 | a | 44.19 | b | 50.33 | a | 56.93 | a | 67.26 | 74.47 | 76.27 | 73.95 | 69.43 | a | 62.44 | 50.43 | a | 40.40 | 58.68 | |||||||
2002 | 41.68 | 44.14 | 50.88 | a | 63.34 | b | 66.18 | a | 77.75 | b | 75.95 | 75.02 | b | 70.18 | 58.38 | b | 48.70 | b | 40.69 | 59.41 | ||||||
2003 | 47.50 | 44.82 | 50.57 | a | 56.98 | 67.53 | 73.85 | 79.50 | a | 77.00 | b | 71.72 | 63.87 | 49.63 | 42.07 | a | 60.42 | |||||||||
2004 | 42.73 | a | 41.41 | a | 54.68 | 56.03 | a | 66.53 | a | 73.25 | 76.71 | 72.39 | 67.33 | 58.98 | 45.65 | g | 40.66 | 59.16 | a | |||||||
2005 | 44.45 | a | 44.45 | 49.12 | a | 56.05 | a | 65.59 | d | 74.10 | 78.02 | a | 70.31 | b | 71.38 | 59.84 | 50.83 | 44.92 | 59.09 | |||||||
2006 | 43.88 | a | 47.86 | 50.13 | 59.93 | 69.05 | 75.78 | a | 77.30 | a | 71.59 | b | 64.16 | a | 57.74 | 49.91 | a | 40.13 | a | 58.95 | ||||||
2007 | 38.62 | b | 44.93 | a | 51.21 | 54.78 | a | 63.55 | b | 73.70 | c | 75.21 | e | 75.15 | 66.62 | 62.93 | p | 52.67 | 39.95 | a | 57.85 | a | ||||
2008 | 39.71 | 45.45 | 50.50 | g | 55.62 | 63.48 | b | 75.13 | 73.07 | a | 71.79 | c | 65.62 | b | 59.71 | b | 48.69 | a | 42.63 | a | 58.26 | a | ||||
2009 | 43.60 | b | 46.18 | 52.47 | 56.07 | 66.95 | 70.54 | b | 78.05 | a | 74.58 | 67.70 | b | 56.08 | 50.71 | a | 39.54 | g | 60.27 | a | ||||||
2010 | 39.82 | c | 41.81 | g | 47.96 | h | 56.24 | g | 63.18 | 76.07 | w | 72.15 | a | 74.81 | e | 69.62 | n | 59.93 | d | 45.67 | 46.65 | d | 57.46 | e | ||
2011 | 41.30 | f | 38.12 | o | 54.79 | c | 60.19 | d | 62.52 | d | 76.53 | a | 78.18 | 77.97 | 70.97 | a | 60.13 | d | 46.71 | a | 37.23 | c | 62.52 | b | ||
2012 | 44.45 | a | 43.83 | e | 46.85 | k | 59.64 | l | 65.53 | a | 76.50 | 75.81 | 76.74 | 70.23 | 62.02 | 53.62 | b | 42.62 | c | 61.14 | b | |||||
2013 | 38.52 | c | 41.64 | 53.23 | 59.64 | e | 64.64 | f | 78.22 | 75.02 | a | 74.07 | b | 68.02 | b | 57.00 | a | 53.43 | w | ----- | z | 60.59 | c | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 41.38 | 44.23 | 49.71 | 56.58 | 64.79 | 73.43 | 76.16 | 73.93 | 68.56 | 58.97 | 48.29 | 41.14 | 58.44 | |||||||||||||
S.D. | 2.56 | 2.90 | 3.01 | 2.65 | 2.36 | 2.57 | 1.82 | 2.18 | 2.23 | 2.24 | 2.74 | 2.72 | 1.22 | |||||||||||||
SKEW | 0.21 | -0.61 | 0.06 | 0.10 | 0.64 | -0.04 | -0.01 | 0.00 | -0.40 | -0.06 | 0.00 | 0.66 | -0.37 | |||||||||||||
MAX | 47.50 | 50.43 | 56.92 | 63.34 | 70.31 | 78.40 | 80.13 | 78.60 | 72.10 | 63.87 | 53.62 | 49.39 | 60.42 | |||||||||||||
MIN | 36.45 | 35.87 | 43.92 | 49.09 | 61.06 | 67.32 | 72.15 | 68.48 | 62.17 | 53.73 | 42.93 | 37.10 | 56.38 | |||||||||||||
YRS | 44 | 44 | 48 | 47 | 44 | 45 | 47 | 46 | 47 | 46 | 44 | 44 | 20 |