YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 41.50 | 23.14 | a | 25.40 | 30.01 | i | ||
1960 | 16.40 | a | 18.59 | 18.68 | 42.02 | 52.24 | 59.82 | 65.26 | 65.95 | 57.52 | 46.31 | 34.98 | 16.42 | 41.18 | ||||||||||||
1961 | 13.27 | 23.30 | 29.84 | 38.12 | 49.27 | 62.82 | 65.94 | 65.66 | 57.62 | 47.73 | 31.70 | 16.69 | 41.83 | |||||||||||||
1962 | 10.13 | 12.46 | 27.77 | 39.88 | 56.97 | 61.50 | i | 63.56 | 64.03 | 53.05 | 47.48 | 32.65 | 17.31 | 38.66 | a | |||||||||||
1963 | 5.45 | a | 9.00 | 28.37 | 43.68 | 50.94 | 65.61 | c | 67.97 | 62.98 | 57.23 | d | 55.07 | a | 37.12 | 13.29 | 41.39 | |||||||||
1964 | 19.94 | 19.78 | 24.95 | 41.65 | 57.58 | 61.98 | 68.37 | 61.06 | 54.58 | 44.60 | 34.93 | 15.10 | 42.04 | |||||||||||||
1965 | 11.31 | 12.59 | 21.37 | 37.67 | 56.23 | 59.76 | e | 62.97 | 64.27 | c | 52.02 | 46.50 | 31.82 | 25.03 | 40.13 | |||||||||||
1966 | 8.97 | 18.73 | 30.71 | 38.02 | 49.02 | 64.98 | 70.65 | 63.91 | d | 56.28 | 44.85 | 30.32 | 19.48 | 41.33 | ||||||||||||
1967 | 16.48 | 10.21 | 27.50 | 40.83 | 47.56 | 62.71 | b | 64.18 | 61.60 | 55.92 | 44.05 | 27.82 | 19.90 | 39.90 | ||||||||||||
1968 | 13.39 | 14.84 | 33.95 | 43.92 | 50.00 | 61.67 | 65.94 | 64.40 | 57.43 | 48.06 | 31.75 | 17.98 | 41.94 | |||||||||||||
1969 | 14.74 | 18.23 | b | 23.35 | 43.58 | 53.77 | 55.30 | 65.40 | 68.37 | 56.28 | 42.44 | 30.08 | 20.29 | 40.99 | ||||||||||||
1970 | 8.16 | 14.82 | 24.16 | 42.72 | 52.32 | 63.92 | 68.90 | 65.23 | 56.48 | 46.97 | 31.42 | 18.11 | 41.10 | |||||||||||||
1971 | 8.05 | 15.94 | a | 23.03 | 40.38 | 50.18 | 65.50 | 63.82 | c | 62.44 | 58.15 | 52.50 | 32.15 | 20.40 | 41.05 | |||||||||||
1972 | 8.05 | 11.37 | b | 22.66 | 36.13 | 57.06 | 61.02 | 65.58 | 64.82 | 54.45 | 41.97 | 30.43 | 15.06 | 39.05 | ||||||||||||
1973 | 18.32 | 18.23 | 35.52 | 41.25 | h | 53.88 | r | 62.95 | 67.08 | 66.95 | 56.15 | 51.18 | 31.22 | 16.90 | 42.45 | b | ||||||||||
1974 | 11.76 | 10.16 | 24.45 | 40.75 | 49.03 | 58.45 | a | 68.52 | 63.77 | 50.30 | 43.15 | 32.84 | a | 22.34 | 39.63 | |||||||||||
1975 | 14.52 | 16.82 | 21.18 | 33.97 | 57.82 | a | 62.17 | 68.34 | 64.42 | a | 51.58 | 46.66 | b | 36.38 | 16.65 | d | 40.87 | |||||||||
1976 | 7.71 | 20.46 | a | 23.85 | 43.85 | 49.66 | 65.27 | b | 66.65 | a | 63.71 | 53.76 | a | 38.94 | 24.65 | 8.34 | b | 38.90 | ||||||||
1977 | 2.63 | 16.12 | 32.23 | a | 44.68 | 61.65 | a | 60.23 | 68.81 | b | 59.82 | c | 54.79 | a | 44.45 | 32.09 | b | 16.13 | d | 41.14 | ||||||
1978 | 10.43 | a | 11.71 | 25.43 | b | 37.25 | 55.84 | 60.59 | a | 64.35 | d | 64.96 | d | 57.37 | c | 43.65 | 30.36 | a | 13.92 | 39.66 | ||||||
1979 | 3.18 | a | 7.12 | 25.65 | 37.53 | a | 48.68 | 59.33 | 65.67 | d | 60.98 | i | 56.03 | 41.07 | b | 28.93 | 22.55 | a | 35.98 | a | ||||||
1980 | 12.60 | 13.08 | c | 22.47 | 42.00 | 56.50 | 59.37 | 66.72 | f | 65.88 | e | 53.10 | 39.90 | 32.17 | d | 15.41 | n | 39.71 | b | |||||||
1981 | 14.21 | e | 20.25 | 29.42 | a | 41.33 | 50.77 | 60.78 | a | 63.98 | 62.77 | 52.70 | 39.98 | 34.75 | 19.66 | b | 40.88 | |||||||||
1982 | 3.81 | b | 12.98 | 24.11 | 36.39 | b | 57.68 | a | 53.07 | a | 65.67 | b | 60.63 | a | 52.02 | b | 44.92 | a | 29.82 | 22.66 | b | 38.65 | ||||
1983 | 15.62 | b | 22.26 | c | 28.11 | 37.13 | 45.98 | b | 60.78 | 70.02 | a | 66.74 | b | 57.10 | 44.43 | c | 31.73 | b | 6.00 | b | 40.49 | |||||
1984 | 8.48 | b | 25.35 | b | 19.98 | c | 42.62 | 48.72 | b | 62.57 | 64.77 | a | 66.60 | a | 52.07 | b | 46.55 | a | 30.08 | 17.89 | c | 40.47 | ||||
1985 | 10.18 | 13.78 | a | 30.73 | 42.90 | 56.13 | 57.45 | 63.60 | 61.92 | a | 55.13 | c | 44.47 | 25.37 | d | 7.14 | b | 39.06 | ||||||||
1986 | 7.56 | m | 18.36 | j | 27.17 | m | 45.32 | b | 56.29 | 59.13 | g | 65.89 | h | 60.14 | j | 52.93 | i | 45.95 | t | 23.97 | n | 20.72 | m | 50.81 | j | |
1987 | 19.44 | m | 23.55 | i | 31.93 | i | 46.85 | c | 54.89 | d | 64.36 | h | 68.36 | j | 62.85 | k | 55.43 | g | 38.72 | h | 33.46 | g | 23.90 | p | 50.87 | j |
1988 | 5.32 | l | 9.45 | h | 25.86 | j | 41.18 | b | 57.08 | a | 65.59 | a | 69.02 | a | 67.04 | g | 56.33 | i | 38.45 | k | 32.25 | n | 17.54 | r | 58.22 | h |
1989 | 15.63 | l | 9.35 | k | 21.64 | i | 39.67 | d | 51.30 | a | 60.76 | i | 67.66 | o | 64.50 | i | 56.00 | h | 46.50 | b | 26.58 | l | 6.42 | r | 45.82 | i |
1990 | 22.60 | k | 18.00 | j | 30.83 | g | 43.55 | a | 49.22 | h | 62.27 | j | 65.17 | j | 63.27 | k | 57.46 | p | 41.64 | j | 34.94 | n | 23.05 | t | 43.55 | k |
1991 | 6.61 | i | 19.38 | k | 28.25 | k | 44.57 | b | 57.64 | f | 65.87 | k | 64.08 | m | 66.60 | k | 52.20 | j | 44.55 | l | 25.58 | r | 12.81 | o | 44.57 | k |
1992 | 18.68 | k | 20.65 | i | 25.02 | j | 38.52 | g | 54.25 | e | 59.05 | i | 60.66 | l | 59.97 | n | 53.03 | l | 43.34 | l | 28.68 | s | ----- | z | 54.25 | k |
1993 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 64.19 | 48.72 | c | 40.59 | b | 26.19 | a | 20.31 | b | 40.00 | g | |
1994 | 2.27 | 11.34 | 29.38 | a | 37.81 | c | 48.32 | 56.73 | b | 57.06 | 58.71 | b | 56.55 | a | 47.23 | a | 34.02 | b | 25.91 | b | 38.78 | |||||
1995 | 16.82 | 14.77 | 29.53 | 35.50 | c | 51.61 | 65.23 | 65.63 | a | 67.11 | 53.08 | 45.02 | a | 21.43 | 13.81 | b | 39.96 | |||||||||
1996 | 8.16 | c | 12.38 | 20.07 | d | 34.28 | a | 50.00 | a | 60.07 | b | 62.00 | k | 63.67 | b | ----- | z | ----- | z | 26.05 | b | 17.56 | d | 32.47 | c | |
1997 | 11.98 | c | 19.13 | b | 24.65 | a | 38.26 | a | 47.74 | 62.38 | 63.85 | a | 59.47 | 55.33 | a | 44.45 | b | 29.47 | a | 24.76 | b | 40.12 | ||||
1998 | 19.80 | c | 29.35 | b | 28.58 | a | 45.79 | b | 57.38 | b | 60.13 | c | 65.03 | 66.89 | 60.12 | d | 49.34 | c | 34.66 | a | 22.96 | c | 45.00 | |||
1999 | 11.76 | 21.40 | c | 29.55 | a | 44.33 | a | 55.35 | 62.88 | a | 68.89 | 62.05 | a | 55.88 | b | 43.45 | k | 38.50 | b | 19.63 | e | 42.75 | a | |||
2000 | 13.78 | b | 22.50 | a | 35.38 | b | 40.32 | b | 54.92 | 59.07 | 62.82 | 63.20 | a | 54.72 | 47.85 | 30.12 | b | 10.41 | c | 41.26 | ||||||
2001 | 21.03 | 13.94 | a | 27.55 | b | 44.60 | a | 54.26 | 62.14 | a | 64.85 | 66.03 | 55.08 | 44.02 | a | 40.70 | b | 26.40 | a | 43.38 | ||||||
2002 | 23.07 | a | 24.58 | b | 22.56 | d | 39.97 | a | 48.97 | 63.15 | 69.18 | 64.68 | 58.83 | 39.71 | 29.10 | 23.98 | b | 42.31 | ||||||||
2003 | 12.28 | a | 12.46 | 27.97 | b | 39.22 | 52.40 | 60.37 | 65.87 | 65.71 | 56.08 | 46.53 | 31.25 | 23.23 | 41.11 | |||||||||||
2004 | 8.60 | a | 20.83 | 29.32 | 40.33 | a | 50.20 | a | 59.65 | 63.31 | 59.44 | 60.97 | 49.03 | 34.92 | 19.46 | d | 41.34 | |||||||||
2005 | 13.03 | b | 22.96 | 25.61 | 46.17 | 51.34 | 66.25 | 67.27 | 65.32 | 60.80 | 49.47 | a | 32.17 | 19.26 | 43.30 | |||||||||||
2006 | 24.39 | 17.19 | d | 28.48 | e | 45.64 | b | 54.53 | b | 61.67 | c | 69.63 | d | 65.31 | 54.70 | b | 41.11 | c | 35.93 | a | 25.78 | b | 43.70 | |||
2007 | 18.52 | b | 11.14 | c | 31.42 | 40.50 | 54.92 | 64.59 | b | 66.21 | 66.21 | b | 59.76 | e | 49.96 | e | 31.16 | b | 16.50 | e | 42.57 | |||||
2008 | 13.70 | d | 11.90 | d | 23.60 | e | 40.81 | a | 50.00 | a | 61.54 | b | 65.33 | a | 64.21 | 58.18 | b | 43.72 | b | 29.75 | b | 9.27 | a | 39.33 | ||
2009 | 5.30 | f | 18.04 | b | 27.14 | c | 39.42 | f | 51.42 | g | 59.00 | c | 61.62 | a | 63.48 | c | 60.48 | b | 37.87 | h | 38.60 | a | 14.70 | d | 42.88 | d |
2010 | 16.42 | e | 19.85 | d | 35.72 | a | 47.33 | g | 57.95 | c | 61.58 | e | 68.96 | c | 68.02 | f | 53.64 | l | 48.54 | d | 32.30 | g | 16.02 | f | 44.15 | e |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 12.46 | 16.56 | 26.88 | 40.95 | 52.94 | 61.40 | 65.96 | 64.01 | 55.68 | 45.40 | 31.47 | 18.25 | 40.97 | |||||||||||||
S.D. | 5.35 | 4.99 | 4.28 | 3.30 | 3.67 | 2.84 | 2.66 | 2.30 | 2.83 | 3.58 | 3.99 | 5.14 | 1.48 | |||||||||||||
SKEW | 0.11 | 0.35 | 0.23 | -0.21 | 0.15 | -0.52 | -0.65 | -0.54 | -0.17 | 0.32 | -0.17 | -0.49 | 0.58 | |||||||||||||
MAX | 24.39 | 29.35 | 35.72 | 46.85 | 61.65 | 66.25 | 70.65 | 68.37 | 60.97 | 55.07 | 40.70 | 26.40 | 45.00 | |||||||||||||
MIN | 2.27 | 7.13 | 18.68 | 33.97 | 45.98 | 53.07 | 57.06 | 58.71 | 48.72 | 38.94 | 21.43 | 6.00 | 38.65 | |||||||||||||
YRS | 42 | 43 | 43 | 46 | 46 | 43 | 42 | 42 | 42 | 43 | 44 | 43 | 35 |