YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1951 | ----- | z | ----- | z | ----- | z | ----- | z | 69.00 | y | 64.47 | 73.76 | 67.92 | a | 63.65 | 49.44 | 34.55 | 25.76 | 54.22 | e | ||||||
1952 | 28.63 | 28.66 | 30.94 | 46.23 | 54.66 | 66.05 | 69.85 | 69.35 | 62.32 | 55.56 | 33.50 | 25.63 | 47.62 | |||||||||||||
1953 | 32.18 | 27.63 | a | 39.32 | 45.28 | 50.47 | 67.15 | 70.33 | a | 67.13 | 64.35 | 51.63 | a | 39.82 | 27.44 | 48.56 | ||||||||||
1954 | 31.45 | 37.66 | 36.08 | 52.70 | 56.90 | a | 65.67 | 69.84 | 66.71 | 61.25 | 52.40 | 43.53 | 28.05 | 50.19 | ||||||||||||
1955 | 24.15 | 22.93 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 58.85 | m | 52.00 | 35.32 | 30.58 | 32.99 | g | |||||
1956 | 33.31 | 25.59 | 37.39 | 43.82 | b | 56.21 | 68.03 | 67.63 | 65.18 | 62.72 | a | 49.76 | 30.28 | a | 26.97 | 47.24 | ||||||||||
1957 | 29.39 | 38.05 | 36.82 | a | 43.07 | a | 50.68 | a | 64.07 | a | 68.27 | 64.88 | a | 59.88 | 47.98 | 30.81 | a | 31.50 | 47.12 | |||||||
1958 | 26.92 | 34.43 | 32.08 | a | 42.08 | 57.58 | a | 66.48 | 69.98 | b | 69.55 | 61.69 | c | 51.40 | a | 38.25 | 35.24 | 48.81 | ||||||||
1959 | 31.60 | a | 32.70 | a | 36.63 | 46.57 | 55.12 | b | 68.05 | 71.40 | a | 66.90 | 59.34 | b | 49.53 | 36.83 | 31.12 | a | 48.82 | |||||||
1960 | 23.50 | 23.62 | a | 38.53 | a | 46.93 | 54.69 | 66.57 | 70.18 | a | 69.59 | c | 63.53 | a | 46.93 | b | 38.77 | b | 25.47 | 47.36 | ||||||
1961 | 25.77 | a | 30.91 | a | 36.09 | n | 45.09 | h | 55.98 | a | 67.40 | 69.64 | b | 65.82 | a | 55.92 | 47.06 | e | 33.17 | a | 22.66 | c | 47.43 | b | ||
1962 | 22.31 | b | 30.64 | c | 31.61 | d | 47.98 | d | 53.37 | e | 62.48 | 68.47 | 68.57 | c | 61.15 | 50.00 | a | 39.63 | 29.88 | a | 47.17 | |||||
1963 | 19.42 | 31.83 | a | 35.83 | a | 44.93 | 57.48 | 62.60 | 71.47 | 65.69 | 61.82 | 52.84 | 36.92 | 25.71 | 47.21 | |||||||||||
1964 | 22.18 | a | 21.43 | 28.98 | c | 38.48 | d | 54.52 | d | 62.54 | c | 70.27 | 66.45 | 59.33 | 50.81 | j | 35.02 | 26.60 | 44.16 | a | ||||||
1965 | 28.34 | 27.71 | 33.27 | 43.86 | e | 50.38 | j | 59.98 | h | 67.79 | e | 65.90 | e | 55.80 | b | ----- | z | 40.32 | 31.82 | c | 43.87 | c | ||||
1966 | 22.54 | f | 23.72 | c | 38.89 | i | 46.57 | i | 56.63 | l | 63.76 | e | 70.70 | c | 67.10 | 60.14 | e | 49.85 | e | 40.12 | d | 25.53 | b | 50.11 | d | |
1967 | 24.90 | g | 31.25 | f | 42.71 | g | 45.85 | g | 55.91 | h | 61.90 | e | 70.45 | 66.00 | a | 59.18 | 50.56 | 38.95 | a | 22.02 | 52.72 | e | ||||
1968 | 23.82 | a | 32.54 | a | 37.48 | 40.75 | b | 52.91 | c | 65.18 | 68.85 | 63.92 | a | 60.66 | a | 49.43 | b | 34.75 | 25.30 | f | 48.21 | a | ||||
1969 | 30.56 | 28.98 | f | 35.24 | h | 46.58 | 56.68 | a | 61.60 | e | 70.79 | e | ----- | z | ----- | z | 41.55 | t | 36.03 | 32.42 | 47.81 | e | ||||
1970 | 28.52 | b | 37.30 | a | 34.52 | a | 37.50 | e | 56.54 | c | 65.43 | 71.26 | d | 70.42 | a | 58.67 | c | 41.81 | d | 37.79 | b | 28.57 | b | 47.36 | ||
1971 | 25.72 | a | 29.76 | a | 37.34 | 47.31 | i | 51.96 | h | 65.45 | a | 70.87 | 66.52 | 57.55 | a | 46.13 | a | 34.92 | 24.79 | 45.90 | b | |||||
1972 | 27.76 | 33.67 | 43.25 | a | 45.28 | 54.77 | 64.50 | b | 71.31 | 66.13 | 60.27 | b | 49.03 | 31.67 | d | 25.45 | b | 47.76 | ||||||||
1973 | 22.67 | a | 29.34 | 34.00 | c | 39.52 | 50.95 | b | 61.08 | 67.53 | 66.74 | 56.48 | 50.00 | 38.43 | 26.73 | 45.29 | ||||||||||
1974 | 22.82 | 24.41 | 40.72 | a | 43.30 | b | 54.48 | c | 65.60 | 68.48 | c | 67.21 | b | 60.66 | a | 50.03 | b | 37.18 | 25.08 | a | 46.67 | |||||
1975 | 24.55 | 28.43 | 37.26 | 43.87 | 53.56 | 65.82 | 69.02 | 67.40 | 60.27 | 51.61 | 36.90 | 29.26 | 47.33 | |||||||||||||
1976 | 26.47 | 37.45 | 38.23 | 47.97 | 57.44 | 66.30 | 70.23 | r | 67.77 | 60.95 | ----- | z | ----- | z | 28.87 | p | 50.32 | d | ||||||||
1977 | ----- | z | ----- | z | 39.64 | j | 50.71 | a | 58.40 | f | 68.31 | l | ----- | z | 68.83 | h | ----- | z | 52.43 | d | 42.17 | ----- | z | 48.43 | i | |
1978 | ----- | z | ----- | z | 49.72 | v | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1979 | ----- | z | 32.12 | 38.07 | d | 46.55 | 55.81 | ----- | z | 71.94 | g | 62.00 | u | 64.05 | j | ----- | z | ----- | z | 32.79 | b | 41.07 | g | |||
1980 | 32.88 | g | ----- | z | 36.46 | h | 45.28 | 53.52 | g | 71.22 | c | 72.79 | n | 65.85 | g | 62.97 | k | 51.23 | e | ----- | z | ----- | z | 55.91 | i | |
1981 | ----- | z | ----- | z | ----- | z | 57.61 | p | 54.90 | b | 69.27 | 72.80 | p | 67.18 | i | 60.98 | ----- | z | 42.46 | c | 34.15 | e | 52.35 | g | ||
1982 | 21.79 | e | 27.72 | j | 37.89 | i | 44.56 | v | 47.50 | i | 62.89 | p | 64.56 | v | 66.33 | h | ----- | z | 44.92 | r | 33.73 | d | 26.79 | e | 27.44 | i |
1983 | 27.60 | f | 29.32 | f | 34.87 | h | 39.93 | w | 54.59 | i | 61.46 | c | 69.67 | b | 69.63 | 63.57 | a | 49.95 | c | 36.21 | i | 27.85 | e | 57.02 | f | |
1984 | 24.55 | c | 28.52 | d | 37.10 | f | 41.20 | g | 56.94 | f | 59.27 | h | ----- | z | 68.92 | k | 61.38 | b | 43.61 | h | 36.45 | h | 31.83 | j | 38.15 | i |
1985 | 26.02 | g | 26.53 | j | 37.41 | h | 47.93 | b | 54.67 | b | 66.13 | c | ----- | z | 71.23 | t | 57.27 | 49.26 | b | 36.30 | b | 28.66 | 48.60 | e | ||
1986 | 34.21 | b | 34.76 | a | 42.03 | 47.85 | 55.89 | ----- | z | 68.29 | b | 69.37 | 57.58 | 46.09 | d | 36.55 | 29.77 | 47.49 | a | |||||||
1987 | 25.35 | 29.71 | 34.24 | 47.72 | 53.87 | 67.12 | 70.38 | a | 66.90 | 59.88 | 53.23 | a | 36.17 | a | 25.26 | 47.49 | ||||||||||
1988 | 21.53 | 30.78 | 36.77 | a | 46.62 | a | 55.30 | a | 66.48 | a | 70.13 | 66.77 | 58.19 | a | 53.37 | a | 36.79 | a | 26.50 | 47.44 | ||||||
1989 | 23.97 | 31.14 | 45.54 | c | 53.55 | 59.78 | a | 65.98 | 71.77 | a | 66.58 | 63.30 | 49.11 | 38.72 | 28.82 | 49.86 | ||||||||||
1990 | 24.48 | 29.59 | 40.34 | 48.28 | 54.77 | a | 69.87 | 68.75 | a | 66.42 | 62.66 | a | 49.16 | 37.05 | a | 21.42 | 47.73 | |||||||||
1991 | 22.16 | 33.84 | 35.71 | c | 44.67 | 54.71 | 62.95 | 69.02 | 67.91 | b | 61.02 | 51.63 | 33.20 | 27.34 | 47.01 | |||||||||||
1992 | 23.63 | 33.09 | a | 40.37 | ----- | z | 55.79 | q | 64.17 | c | 68.38 | a | 66.02 | a | 61.43 | c | 52.88 | a | 30.85 | 22.90 | 46.37 | b | ||||
1993 | 30.18 | 32.54 | a | 38.74 | 45.65 | 54.85 | 64.78 | 70.78 | a | 65.95 | 60.34 | a | 47.86 | b | 33.22 | 27.87 | a | 47.73 | ||||||||
1994 | 29.50 | 29.56 | a | 42.00 | c | 45.47 | 56.27 | a | 70.36 | b | 72.15 | 70.13 | 60.84 | a | 47.85 | 34.74 | a | 31.38 | a | 49.19 | ||||||
1995 | 26.21 | 38.52 | 39.23 | a | 43.43 | 50.55 | 62.59 | b | 68.91 | b | 70.67 | a | 61.59 | a | 50.61 | c | 40.62 | 32.10 | 48.75 | |||||||
1996 | 29.65 | a | 36.04 | a | 38.80 | c | 45.61 | c | 61.81 | b | 67.40 | a | 72.05 | a | 69.10 | f | 57.83 | 48.23 | a | 36.95 | 30.43 | d | 47.71 | a | ||
1997 | 25.58 | 31.27 | b | 43.24 | 43.95 | 56.53 | a | 64.98 | 68.92 | 67.48 | a | 63.73 | 47.55 | 35.88 | 25.77 | 47.91 | ||||||||||
1998 | 29.86 | b | 28.59 | a | 37.97 | 42.55 | 57.60 | b | 64.79 | b | 70.35 | 69.00 | h | 65.63 | c | 48.50 | 39.65 | c | 30.41 | c | 46.90 | a | ||||
1999 | 33.71 | 36.16 | c | 43.35 | 43.03 | 52.63 | a | 63.45 | 68.41 | b | 65.53 | 59.31 | a | 51.65 | 42.58 | 27.02 | a | 48.90 | ||||||||
2000 | ----- | z | 36.29 | a | ----- | z | ----- | z | 60.08 | e | 68.36 | b | 71.83 | b | 68.57 | d | 63.58 | 48.09 | b | 29.64 | a | ----- | z | 55.80 | d | |
2001 | 26.28 | b | 32.88 | 39.37 | 49.27 | 59.23 | 68.44 | c | 71.12 | f | 66.86 | b | 63.45 | a | 53.42 | a | 39.26 | c | 26.67 | d | 47.74 | a | ||||
2002 | 27.40 | b | 30.12 | 37.74 | b | ----- | z | 58.55 | a | 72.26 | a | 71.77 | e | 69.48 | b | 60.74 | c | 46.70 | c | 36.73 | 27.18 | 48.97 | a | |||
2003 | 35.54 | d | 32.25 | 38.06 | 47.10 | a | 57.40 | 66.88 | b | 75.58 | 69.63 | d | 61.26 | e | 55.69 | d | 35.31 | d | 30.32 | c | 50.42 | |||||
2004 | 28.74 | d | ----- | z | 45.28 | b | 45.81 | a | ----- | z | 67.52 | b | 70.15 | e | 67.28 | a | 61.18 | e | 48.68 | c | ----- | z | 28.65 | 51.48 | c | |
2005 | 33.56 | d | 33.44 | a | ----- | z | ----- | z | 56.96 | d | 64.77 | b | 72.92 | a | 67.11 | c | 62.78 | e | ----- | z | 39.60 | a | 29.95 | c | 51.23 | c |
2006 | 29.81 | b | 33.34 | c | 37.62 | b | 50.22 | e | 60.60 | e | 68.24 | c | 70.54 | c | 66.18 | a | 55.96 | e | 47.72 | a | 39.33 | 26.98 | b | 48.88 | ||
2007 | 23.24 | f | 31.93 | a | 42.02 | 47.43 | a | 53.84 | b | 66.33 | 70.96 | e | 69.62 | a | 62.79 | a | 49.98 | c | 42.43 | a | 26.55 | c | 51.26 | a | ||
2008 | ----- | z | 29.04 | b | 39.65 | a | 44.38 | 53.79 | c | 66.02 | 69.14 | f | 67.00 | b | 61.59 | a | 50.83 | a | 40.17 | ----- | z | 50.27 | c | |||
2009 | ----- | z | ----- | z | ----- | z | ----- | z | 59.29 | c | ----- | z | ----- | z | 69.62 | b | ----- | z | ----- | z | ----- | z | ----- | z | 64.45 | j |
2010 | ----- | z | ----- | z | 35.75 | i | ----- | z | 54.06 | m | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2011 | ----- | z | 27.00 | d | 41.34 | o | 45.93 | p | 52.15 | u | ----- | z | 72.12 | k | 70.00 | s | ----- | z | ----- | z | ----- | z | ----- | z | 27.00 | k |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 27.10 | 31.10 | 38.01 | 45.58 | 55.66 | 65.80 | 70.21 | 67.44 | 60.73 | 49.93 | 36.93 | 27.96 | 47.99 | |||||||||||||
S.D. | 3.95 | 4.12 | 3.70 | 3.30 | 2.62 | 2.53 | 1.64 | 1.62 | 2.31 | 2.57 | 3.35 | 3.03 | 1.15 | |||||||||||||
SKEW | 0.25 | -0.28 | -0.18 | -0.08 | 0.08 | 0.26 | 0.76 | 0.29 | -0.37 | -0.25 | -0.18 | 0.15 | 0.26 | |||||||||||||
MAX | 35.54 | 38.52 | 45.54 | 53.55 | 61.81 | 72.26 | 75.58 | 70.67 | 65.63 | 55.69 | 43.53 | 35.24 | 50.42 | |||||||||||||
MIN | 19.42 | 21.43 | 28.98 | 37.50 | 50.47 | 61.08 | 67.53 | 63.92 | 55.80 | 41.81 | 29.64 | 21.42 | 45.29 | |||||||||||||
YRS | 45 | 48 | 42 | 43 | 45 | 50 | 46 | 47 | 51 | 48 | 51 | 50 | 27 |