YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 55.87 | 63.45 | 57.83 | a | 51.20 | 45.44 | d | 36.95 | 27.94 | 48.38 | e | |||||
1960 | 22.75 | a | 27.98 | 36.97 | 41.00 | 45.68 | c | 55.62 | 67.40 | e | 57.39 | 54.80 | 44.63 | a | 30.58 | 26.84 | 42.64 | |||||||||
1961 | 31.87 | 34.20 | 34.60 | 39.68 | 45.81 | 60.03 | 63.10 | 65.31 | 47.67 | 43.42 | 31.33 | 26.27 | 43.61 | |||||||||||||
1962 | 24.30 | a | 29.41 | 31.22 | a | 43.30 | 42.28 | a | 52.29 | b | 58.34 | b | 56.68 | a | 53.53 | a | 44.21 | 36.40 | 32.52 | a | 42.04 | |||||
1963 | 23.95 | 38.21 | 32.52 | 35.52 | 49.62 | a | 52.28 | 56.29 | 60.66 | 59.25 | 46.52 | 36.55 | 29.73 | a | 43.42 | |||||||||||
1964 | 25.84 | 30.84 | 31.60 | a | 38.00 | 44.48 | 52.75 | 61.35 | 58.15 | 52.07 | 47.94 | 33.00 | 27.24 | 41.94 | ||||||||||||
1965 | 28.53 | 34.88 | 33.90 | 41.65 | 45.13 | 54.17 | 61.45 | a | 59.24 | 48.23 | 49.34 | 36.00 | 26.95 | a | 43.29 | |||||||||||
1966 | 26.39 | 29.04 | 36.18 | 41.08 | 51.02 | 51.57 | 59.23 | a | 60.10 | 55.92 | 45.02 | a | 36.70 | 29.90 | 43.51 | |||||||||||
1967 | 30.39 | 34.91 | 33.08 | a | 33.30 | 47.77 | 55.62 | 64.05 | a | 65.95 | 58.05 | 45.23 | 37.10 | 25.77 | a | 44.27 | ||||||||||
1968 | 26.84 | 36.16 | 39.00 | a | 38.92 | 46.77 | 55.87 | 65.37 | 57.62 | b | 54.45 | 44.97 | a | 36.25 | 25.75 | a | 44.00 | |||||||||
1969 | 24.61 | 26.02 | 34.08 | 40.23 | 51.08 | 56.78 | a | 60.71 | 59.53 | a | 54.36 | a | 40.00 | 36.47 | a | 31.44 | 42.94 | |||||||||
1970 | 29.98 | 34.55 | 33.24 | 32.87 | 47.08 | 57.93 | 62.81 | 61.94 | 48.45 | 41.65 | a | 34.20 | 23.89 | 42.38 | ||||||||||||
1971 | 29.89 | 30.98 | 30.53 | 38.42 | 47.94 | 51.80 | 64.33 | a | 65.68 | 49.05 | 41.08 | 34.57 | 24.02 | 42.36 | ||||||||||||
1972 | 24.97 | 32.02 | 39.58 | 37.18 | 49.19 | 56.20 | 63.08 | 63.23 | 49.72 | 44.27 | a | 34.23 | 21.82 | 42.96 | ||||||||||||
1973 | 24.53 | 32.59 | 33.92 | 39.98 | 50.90 | 56.47 | 63.34 | 60.34 | 54.65 | 43.71 | 32.18 | 32.11 | 43.73 | |||||||||||||
1974 | 24.61 | 32.36 | 35.06 | 39.42 | 45.00 | 60.42 | 61.47 | 61.27 | a | 56.70 | 43.82 | 36.45 | b | 28.65 | 43.77 | |||||||||||
1975 | 28.35 | 29.64 | 32.23 | 34.32 | 47.73 | 53.02 | 65.02 | a | 57.27 | 56.12 | 44.16 | 31.95 | 31.87 | 42.64 | ||||||||||||
1976 | 30.05 | 30.76 | 32.50 | 38.27 | 48.65 | 50.50 | 62.40 | 57.06 | 56.65 | 45.35 | 39.67 | 31.10 | 43.58 | |||||||||||||
1977 | 26.00 | 36.73 | 32.40 | 44.18 | 42.26 | 59.12 | 60.60 | 64.10 | 51.77 | 45.79 | 33.05 | a | 31.79 | 43.98 | ||||||||||||
1978 | 31.89 | 33.64 | 40.79 | 39.63 | 44.44 | 55.37 | 62.18 | 59.66 | 50.78 | 46.84 | 28.92 | 22.87 | 43.08 | |||||||||||||
1979 | 17.39 | 30.46 | 38.37 | 39.57 | 49.35 | 55.18 | 62.05 | 60.31 | 58.02 | 49.21 | 32.63 | 33.08 | 43.80 | |||||||||||||
1980 | 27.47 | 35.26 | 34.60 | 43.82 | 47.80 | a | 51.28 | 62.52 | 56.26 | 55.08 | 46.98 | 36.91 | a | 34.72 | a | 44.39 | ||||||||||
1981 | 32.47 | 31.68 | 37.06 | 43.20 | 47.37 | 54.93 | 59.02 | 64.16 | 54.62 | 43.69 | 36.45 | 30.98 | 44.64 | |||||||||||||
1982 | 23.61 | 28.96 | a | 33.77 | 37.98 | b | 47.26 | 56.62 | 59.88 | a | 60.63 | 50.82 | 43.27 | a | 30.88 | a | 26.29 | 41.66 | ||||||||
1983 | 32.48 | e | 34.17 | a | 36.92 | a | 37.63 | 49.65 | 52.82 | b | 58.79 | 62.12 | a | 50.97 | 46.53 | 34.98 | a | 22.40 | f | 45.19 | a | |||||
1984 | 26.72 | d | 30.60 | d | 37.98 | 37.52 | j | 47.34 | 52.27 | 63.33 | a | 61.90 | a | 51.20 | 39.69 | 32.71 | a | 23.61 | 42.49 | a | ||||||
1985 | 23.65 | a | 26.61 | 33.19 | 44.88 | 48.33 | a | 57.00 | 67.06 | 58.54 | c | 46.66 | b | 43.47 | a | 24.13 | 22.00 | 41.29 | ||||||||
1986 | 33.79 | 34.38 | 40.97 | a | 39.78 | 49.52 | b | 58.88 | a | 57.15 | a | 65.53 | a | 47.83 | 45.76 | b | 36.28 | a | 29.62 | c | 44.96 | |||||
1987 | 25.61 | c | 32.04 | 36.37 | a | 48.71 | b | 50.83 | a | 59.73 | b | 56.83 | e | 59.98 | e | 56.27 | b | 49.79 | c | 32.77 | f | 27.56 | 45.79 | a | ||
1988 | 26.04 | c | 36.61 | a | 37.37 | a | 45.21 | b | 47.93 | c | 56.84 | b | 65.03 | 62.34 | 56.09 | c | 53.80 | a | 34.30 | 28.39 | 45.83 | |||||
1989 | 24.09 | b | 22.00 | a | 36.24 | b | 46.71 | a | 47.57 | a | 57.46 | d | 63.11 | 59.08 | a | 55.78 | a | 45.08 | 35.17 | d | 31.58 | a | 43.66 | |||
1990 | 31.45 | a | 28.98 | 37.95 | 47.78 | a | 46.08 | a | 55.62 | b | 65.48 | d | 62.38 | b | 60.33 | g | 44.02 | e | 36.10 | 22.24 | b | 43.46 | a | |||
1991 | 28.81 | 38.68 | 33.37 | 39.10 | a | 44.90 | b | 51.32 | 64.88 | b | 65.48 | e | 59.07 | 47.13 | a | 36.59 | c | 29.98 | a | 44.94 | ||||||
1992 | 29.88 | a | 37.31 | 39.95 | 46.47 | a | 56.13 | a | 60.48 | b | 61.73 | a | 63.88 | a | 48.45 | b | 48.27 | 33.12 | a | 22.87 | 45.71 | |||||
1993 | 17.53 | b | 19.89 | a | 35.20 | a | 40.48 | b | 52.77 | c | 53.17 | a | 55.40 | e | 59.13 | d | 55.20 | b | 46.77 | e | 28.62 | a | 29.34 | 41.13 | ||
1994 | 33.87 | 29.12 | 39.39 | c | 44.28 | e | 51.11 | c | 55.70 | e | 68.02 | c | 62.52 | b | 59.19 | c | 43.82 | a | 27.24 | a | 26.53 | 45.07 | ||||
1995 | 30.65 | 37.09 | a | 34.60 | b | 39.74 | a | 50.52 | g | 54.94 | e | 63.09 | d | 60.38 | b | 57.67 | g | 45.02 | c | 40.05 | a | 27.98 | d | 43.35 | b | |
1996 | 29.46 | e | 28.63 | c | 35.43 | c | 40.52 | c | 43.43 | a | ----- | z | 64.84 | c | 62.00 | 51.29 | d | 43.27 | 35.25 | b | 29.60 | b | 42.16 | a | ||
1997 | 27.85 | d | 29.17 | a | 37.31 | m | 39.08 | r | 53.52 | i | 52.00 | e | 60.55 | c | 63.48 | a | 55.13 | c | 42.35 | a | 36.24 | c | 27.03 | b | 43.76 | c |
1998 | 31.15 | a | 31.16 | c | 35.09 | i | 39.86 | e | 43.56 | 54.18 | 65.62 | g | 60.57 | p | 57.70 | b | 41.68 | a | 34.22 | c | 25.32 | a | 39.87 | c | ||
1999 | 27.97 | a | 26.04 | c | 32.81 | d | 36.61 | b | 43.53 | a | 52.21 | a | 59.29 | b | 62.30 | d | 52.57 | b | 46.09 | b | 41.27 | b | 30.29 | 42.58 | ||
2000 | 27.13 | a | 31.23 | c | 32.88 | a | 42.59 | a | 46.28 | d | 56.37 | d | 60.26 | b | 62.76 | d | 51.52 | f | 41.89 | c | 28.40 | d | 28.79 | c | 41.69 | a |
2001 | 25.21 | b | 28.00 | a | 36.77 | c | 37.95 | a | 50.83 | e | 51.98 | f | 59.98 | f | 65.02 | d | 55.96 | b | 45.98 | c | 34.91 | c | 24.37 | d | 40.50 | b |
2002 | 25.37 | d | 30.07 | e | 31.87 | e | 40.97 | 44.46 | g | 55.93 | b | 66.87 | 58.48 | c | 53.78 | c | 41.05 | b | 35.22 | e | 30.92 | e | 42.77 | a | ||
2003 | 34.97 | a | 30.00 | c | 38.88 | g | 36.16 | e | 44.35 | g | ----- | z | 67.14 | c | 63.30 | c | 56.54 | e | 46.81 | b | 29.78 | g | 29.45 | b | 45.55 | d |
2004 | 26.15 | d | 27.58 | d | 38.95 | b | 41.30 | j | 46.41 | b | 55.30 | b | 63.73 | 64.14 | b | 51.84 | b | 43.74 | b | 32.50 | d | 30.89 | c | 43.75 | a | |
2005 | 25.74 | b | 30.17 | g | 37.31 | e | 38.70 | b | 46.93 | d | 49.61 | c | 63.48 | f | 63.00 | a | 49.93 | c | 43.34 | 31.58 | d | 23.65 | a | 40.98 | b | |
2006 | 29.25 | c | 27.11 | a | 29.55 | b | 38.73 | d | 48.85 | 57.09 | b | 66.17 | b | 60.03 | 54.25 | b | 42.87 | 33.40 | d | 26.53 | 42.82 | |||||
2007 | 23.52 | c | 30.79 | b | 37.45 | b | 37.61 | l | ----- | z | ----- | z | 67.79 | c | 61.26 | d | 51.65 | c | 40.67 | b | 35.19 | c | 24.11 | c | 41.38 | c |
2008 | 20.83 | g | 30.08 | c | 32.52 | d | 35.25 | j | 48.79 | e | 54.48 | h | 63.70 | d | 62.62 | f | 53.88 | d | 45.57 | d | 38.04 | d | 24.25 | g | 44.65 | e |
2009 | 29.38 | g | 30.31 | g | 32.41 | h | 38.30 | g | 46.86 | f | 54.38 | d | 65.02 | g | 60.36 | i | 55.73 | j | 40.07 | d | 33.02 | i | 23.89 | h | 47.23 | j |
2010 | 31.80 | i | 32.30 | f | 33.91 | i | 35.88 | e | 42.44 | m | 51.15 | f | 63.36 | i | 60.02 | d | 52.46 | g | 47.39 | d | 33.40 | j | 27.20 | c | 42.62 | h |
2011 | 28.00 | h | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 27.40 | 31.22 | 35.27 | 40.23 | 47.62 | 55.11 | 62.55 | 61.21 | 53.47 | 44.78 | 34.27 | 27.82 | 43.41 | |||||||||||||
S.D. | 3.77 | 3.95 | 2.88 | 3.65 | 2.86 | 2.74 | 3.13 | 2.65 | 3.38 | 2.73 | 3.32 | 3.27 | 1.18 | |||||||||||||
SKEW | -0.31 | -0.33 | 0.18 | 0.32 | 0.36 | 0.10 | -0.28 | 0.02 | -0.19 | 0.54 | -0.69 | -0.10 | 0.10 | |||||||||||||
MAX | 34.97 | 38.68 | 40.97 | 48.71 | 56.13 | 60.48 | 68.02 | 65.95 | 59.25 | 53.80 | 41.27 | 34.72 | 45.83 | |||||||||||||
MIN | 17.39 | 19.89 | 29.55 | 32.87 | 42.26 | 49.61 | 55.40 | 56.26 | 46.66 | 39.69 | 24.13 | 21.82 | 41.13 | |||||||||||||
YRS | 48 | 48 | 46 | 45 | 44 | 46 | 47 | 49 | 47 | 52 | 48 | 49 | 33 |