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 | 25.58 | l | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1963 | ----- | z | 23.92 | p | 28.57 | c | 37.89 | b | 47.79 | g | 51.11 | c | 63.38 | b | 60.14 | b | 54.30 | g | 44.22 | d | 31.38 | a | 19.73 | p | 45.24 | e |
1964 | 16.48 | h | 17.28 | d | 29.19 | 35.78 | c | 45.52 | b | 52.33 | f | 61.45 | 57.76 | b | 51.86 | a | 39.57 | a | 24.26 | c | 17.61 | m | 40.30 | c | ||
1965 | 27.14 | q | 19.35 | h | 27.27 | a | 36.47 | 41.13 | 48.13 | 60.39 | ----- | z | ----- | z | ----- | z | 32.69 | q | 27.81 | 40.20 | f | |||||
1966 | 21.55 | 19.42 | b | 30.14 | b | 36.83 | 44.50 | e | 57.96 | b | 60.58 | 58.82 | c | 51.70 | c | 38.82 | c | 31.87 | 22.10 | b | 39.53 | |||||
1967 | 24.70 | a | 27.57 | 34.33 | d | 36.73 | 42.74 | 54.43 | g | 61.42 | 59.00 | 53.43 | 41.61 | 30.57 | 22.16 | 39.48 | a | |||||||||
1968 | 24.42 | 32.38 | 31.65 | 36.40 | 44.39 | 51.57 | 56.96 | d | 55.45 | 46.80 | 39.68 | 29.27 | 21.39 | 39.20 | ||||||||||||
1969 | 29.23 | 25.64 | 27.48 | 38.07 | 47.35 | 54.26 | c | 64.10 | 63.42 | 57.07 | 42.42 | 30.47 | 26.90 | 42.20 | ||||||||||||
1970 | 21.97 | 30.15 | a | 30.90 | 34.67 | f | 46.52 | 55.30 | 61.97 | 61.55 | 53.80 | 37.74 | d | 29.67 | 26.81 | 41.49 | a | |||||||||
1971 | 24.55 | 25.57 | 32.39 | 37.17 | 44.87 | 55.68 | e | 63.61 | 59.42 | 53.80 | 41.29 | 32.03 | 26.81 | 41.43 | ||||||||||||
1972 | 25.29 | 27.52 | d | 39.29 | 38.28 | e | 45.45 | 56.43 | 61.35 | 58.86 | c | 52.93 | 47.74 | 28.20 | e | 25.58 | g | 43.76 | a | |||||||
1973 | 24.97 | 29.76 | k | 30.58 | 35.70 | 48.42 | l | 55.03 | 61.13 | 58.74 | 54.87 | 39.61 | 30.20 | 24.65 | 41.55 | b | ||||||||||
1974 | 25.81 | 22.68 | 37.94 | 38.90 | 50.42 | 58.50 | b | 61.90 | 57.55 | 51.03 | 44.00 | 31.10 | 22.58 | 41.87 | ||||||||||||
1975 | 23.52 | 25.89 | 31.74 | ----- | z | 45.16 | f | 54.10 | 59.94 | 58.71 | 53.00 | 41.16 | 29.07 | 24.48 | 40.16 | b | ||||||||||
1976 | 22.58 | 30.48 | 30.26 | 37.77 | 46.77 | 52.70 | 58.68 | 58.10 | 51.27 | 37.06 | 28.10 | 19.61 | 39.45 | |||||||||||||
1977 | 24.16 | 26.93 | 25.97 | 39.23 | 44.00 | 56.53 | 60.42 | 61.03 | 54.83 | 48.68 | l | 34.63 | 37.26 | 42.27 | a | |||||||||||
1978 | 27.78 | h | 28.61 | j | 35.68 | 38.40 | 46.26 | 57.27 | 61.40 | a | 57.97 | 52.60 | 45.41 | n | 36.70 | 24.39 | 45.63 | c | ||||||||
1979 | 25.74 | 28.86 | 30.74 | 38.77 | 43.65 | 53.30 | 60.90 | 55.70 | h | 53.40 | 40.94 | 26.13 | 21.71 | 38.56 | a | |||||||||||
1980 | 26.10 | 29.38 | 31.41 | b | 36.67 | 43.81 | 54.57 | 62.87 | 60.31 | b | 54.47 | 40.06 | 30.43 | 26.77 | a | 41.40 | ||||||||||
1981 | 29.23 | 28.43 | 32.48 | 39.90 | 46.26 | d | 58.40 | 62.68 | 58.58 | 52.85 | d | 40.90 | b | 32.29 | b | 29.00 | 42.58 | |||||||||
1982 | 25.32 | 29.70 | a | 31.90 | b | 37.03 | 43.79 | b | 49.79 | b | 59.35 | ----- | z | 57.10 | 41.06 | 32.68 | b | 27.29 | c | 39.55 | a | |||||
1983 | 26.10 | 31.00 | 35.65 | 35.50 | 44.38 | e | 50.30 | 61.10 | 62.86 | c | 60.43 | 45.13 | 34.37 | 29.52 | 43.03 | |||||||||||
1984 | 27.43 | a | 25.52 | 32.97 | 37.57 | 57.86 | c | 58.20 | 63.73 | a | 61.80 | f | 56.60 | 43.90 | a | 32.17 | 30.32 | 42.39 | a | |||||||
1985 | 26.00 | 25.71 | 35.50 | a | 41.50 | 45.77 | 57.63 | 56.04 | d | 45.93 | d | 41.70 | 41.75 | g | 36.91 | s | 24.44 | d | 40.02 | b | ||||||
1986 | 27.23 | 31.78 | a | 34.81 | 42.10 | 45.15 | e | 55.32 | e | 59.13 | 61.61 | 51.47 | 43.10 | 30.63 | 26.42 | l | 43.85 | a | ||||||||
1987 | 21.87 | 25.04 | 27.77 | 37.96 | d | 44.46 | c | 52.54 | b | 56.32 | 57.44 | d | 51.40 | 45.17 | a | 29.37 | 22.48 | 39.32 | ||||||||
1988 | 24.13 | 30.00 | f | 32.52 | 36.10 | 46.06 | 54.60 | 59.84 | 59.74 | 50.37 | 46.26 | 29.83 | 21.39 | 41.89 | a | |||||||||||
1989 | 18.45 | i | 33.00 | d | 33.48 | 43.73 | 47.79 | b | 54.74 | g | 60.69 | r | 58.42 | 52.73 | 43.19 | 32.44 | l | 25.13 | 42.19 | d | ||||||
1990 | 25.77 | a | 27.64 | 35.10 | a | 42.07 | 43.71 | j | 60.12 | f | 61.10 | 56.57 | a | 55.63 | c | 42.52 | 34.36 | e | 27.72 | b | 40.85 | b | ||||
1991 | 27.68 | 32.59 | a | 31.93 | b | 38.20 | 40.90 | 52.20 | 59.77 | 59.76 | b | 53.10 | 45.68 | c | 32.36 | b | 29.80 | a | 42.00 | |||||||
1992 | 25.70 | h | 32.00 | 34.81 | 42.33 | 48.74 | h | 52.67 | 59.39 | 58.90 | a | 52.90 | a | 45.23 | 30.92 | e | 27.65 | 43.68 | b | |||||||
1993 | 33.10 | 31.85 | a | 35.23 | 40.17 | 47.85 | e | 55.50 | f | 60.00 | s | 59.38 | w | 52.38 | a | 43.00 | d | 31.83 | g | 28.04 | e | 38.95 | d | |||
1994 | 26.43 | c | 27.77 | b | 36.52 | 41.07 | a | 47.63 | a | 60.87 | 61.32 | 62.59 | b | 55.67 | 42.93 | a | 34.90 | a | 32.06 | 44.15 | ||||||
1995 | 28.94 | 35.71 | 35.35 | 36.14 | a | 44.71 | 53.97 | 59.13 | 61.97 | 54.73 | 43.94 | 36.87 | 29.00 | 43.37 | ||||||||||||
1996 | 27.45 | 36.14 | 33.29 | 41.53 | 50.48 | 60.27 | 63.42 | 60.10 | 51.90 | 45.62 | b | 35.79 | a | 27.63 | a | 44.47 | ||||||||||
1997 | 28.55 | 29.56 | a | 36.26 | 37.87 | 51.07 | a | 54.31 | a | 61.63 | d | 60.90 | b | 59.10 | 42.26 | 34.50 | 26.06 | 43.50 | ||||||||
1998 | 27.94 | 28.86 | 32.55 | 36.90 | 45.32 | 54.20 | 63.03 | 60.52 | 57.62 | a | 45.19 | 35.90 | 30.00 | f | 44.37 | a | ||||||||||
1999 | 29.55 | 29.82 | 34.81 | 37.79 | a | 47.26 | 54.30 | 61.84 | 59.83 | a | 55.18 | b | 41.65 | 36.43 | 25.90 | 42.86 | ||||||||||
2000 | 29.27 | a | 32.10 | 34.26 | 42.23 | 52.26 | 58.00 | 61.79 | b | 60.94 | 55.77 | 45.45 | 29.80 | 27.52 | 44.12 | |||||||||||
2001 | 25.94 | 29.12 | b | 34.17 | a | 39.48 | a | 48.16 | 57.10 | 62.19 | 60.39 | 54.00 | a | 45.97 | 36.62 | a | 25.03 | 43.18 | ||||||||
2002 | 26.23 | 28.61 | 32.71 | 44.97 | a | 47.07 | a | 59.47 | 61.45 | 59.31 | b | 56.10 | 44.17 | a | 33.97 | 28.10 | 43.51 | |||||||||
2003 | 32.48 | 31.29 | 34.97 | a | 39.37 | 49.39 | 56.10 | 64.03 | a | 63.17 | b | 56.27 | 48.39 | 34.77 | 26.90 | 44.76 | ||||||||||
2004 | 30.03 | 27.55 | 39.84 | 40.17 | 48.87 | a | 55.53 | 61.29 | 58.35 | 52.23 | 44.74 | 31.35 | g | 27.03 | 44.15 | a | ||||||||||
2005 | 31.81 | 33.75 | 34.47 | a | 38.34 | a | 48.00 | d | 56.40 | 61.83 | a | 54.17 | b | 56.33 | 45.58 | 33.67 | 29.39 | 43.65 | ||||||||
2006 | 27.57 | a | 31.68 | 34.87 | 41.87 | 51.61 | 59.48 | a | 63.55 | 60.10 | b | 50.93 | a | 43.55 | 33.90 | 25.23 | 43.69 | |||||||||
2007 | 27.10 | b | 29.74 | a | 33.48 | 35.03 | a | 47.14 | b | 55.48 | c | 60.46 | e | 61.39 | 49.20 | 46.60 | p | 37.70 | 26.03 | a | 42.07 | a | ||||
2008 | 26.16 | 28.45 | 32.08 | g | 36.40 | 45.62 | b | 57.57 | 60.93 | a | 58.82 | c | 51.11 | b | 43.14 | b | 33.47 | 28.50 | a | 42.74 | a | |||||
2009 | 26.86 | b | 28.29 | 36.39 | 38.50 | 50.58 | 54.83 | a | 62.43 | a | 59.45 | 52.39 | b | 38.61 | 34.83 | a | 26.08 | g | 43.92 | a | ||||||
2010 | 26.57 | c | 27.67 | g | 31.00 | h | 39.39 | g | 44.35 | 55.57 | w | 55.77 | a | 61.00 | e | 54.88 | n | 44.37 | d | 28.57 | 29.59 | d | 41.46 | e | ||
2011 | 24.32 | f | 19.62 | o | 36.25 | c | 42.52 | c | 43.41 | d | 57.38 | a | 63.06 | 63.39 | 56.48 | a | 43.07 | c | 31.48 | a | 25.39 | c | 46.24 | b | ||
2012 | 28.77 | a | 28.96 | e | 29.50 | k | 41.78 | l | 46.47 | a | 57.13 | 61.74 | 62.03 | 54.33 | 43.74 | 37.21 | b | 27.89 | c | 44.83 | b | |||||
2013 | 24.46 | c | 25.50 | 36.03 | 41.52 | e | 46.76 | f | 59.90 | 61.83 | a | 60.55 | b | 54.57 | b | 39.23 | a | 38.71 | w | ----- | z | 44.85 | c | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 26.60 | 28.79 | 33.25 | 38.83 | 46.60 | 55.47 | 61.09 | 59.47 | 53.53 | 42.88 | 32.30 | 26.49 | 42.42 | |||||||||||||
S.D. | 2.64 | 3.68 | 3.05 | 2.42 | 3.12 | 2.88 | 1.98 | 2.84 | 3.09 | 2.61 | 3.10 | 3.22 | 1.73 | |||||||||||||
SKEW | 0.35 | -0.77 | -0.31 | 0.57 | 1.09 | -0.35 | -0.94 | -2.39 | -0.99 | -0.24 | -0.25 | 0.44 | -0.72 | |||||||||||||
MAX | 33.10 | 36.14 | 39.84 | 44.97 | 57.86 | 60.87 | 64.10 | 63.42 | 60.43 | 48.39 | 37.70 | 37.26 | 44.76 | |||||||||||||
MIN | 21.55 | 17.28 | 25.97 | 35.03 | 40.90 | 48.13 | 55.77 | 45.93 | 41.70 | 37.06 | 24.26 | 19.61 | 39.20 | |||||||||||||
YRS | 44 | 44 | 48 | 47 | 45 | 45 | 49 | 46 | 48 | 46 | 45 | 44 | 22 |