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 | 33.87 | 15.28 | a | 18.39 | 22.51 | i | ||
1960 | 7.97 | a | 9.41 | 5.00 | 31.77 | 41.00 | 46.90 | 52.55 | 55.06 | 47.23 | 36.06 | 27.10 | 7.03 | 30.59 | ||||||||||||
1961 | 3.74 | 12.64 | 20.26 | 27.57 | 34.97 | 49.87 | 54.71 | 53.84 | 48.40 | 37.39 | 23.33 | 8.00 | 31.23 | |||||||||||||
1962 | 1.35 | 2.25 | 17.42 | 28.13 | 45.48 | 49.65 | g | 52.29 | 52.61 | 42.67 | 37.90 | 25.40 | 9.32 | 28.62 | a | |||||||||||
1963 | -2.81 | -2.50 | 16.71 | 29.90 | 37.87 | 51.46 | b | 55.16 | 51.58 | 46.15 | c | 42.43 | a | 28.87 | 4.71 | 29.96 | ||||||||||
1964 | 10.39 | 8.79 | 14.87 | 30.03 | 44.39 | 48.70 | 55.90 | 50.94 | 44.87 | 33.42 | 26.07 | 6.55 | 31.24 | |||||||||||||
1965 | 1.32 | 0.82 | 11.74 | 28.17 | 42.94 | 47.07 | c | 50.39 | 53.21 | b | 42.93 | 36.10 | 24.27 | 18.94 | 29.82 | |||||||||||
1966 | -2.00 | 10.00 | 20.90 | 27.67 | 35.84 | 51.63 | 57.68 | 52.86 | c | 44.80 | 34.06 | 24.00 | 11.71 | 30.76 | ||||||||||||
1967 | 7.42 | -0.82 | 16.23 | 28.93 | 34.23 | 51.34 | a | 52.61 | 49.68 | 43.50 | 35.68 | 20.80 | 11.94 | 29.29 | ||||||||||||
1968 | 4.26 | 3.97 | 21.97 | 31.87 | 37.97 | 51.03 | 54.94 | 52.71 | 48.63 | 38.77 | 25.00 | 10.45 | 31.80 | |||||||||||||
1969 | 6.68 | 7.92 | b | 11.26 | 31.93 | 40.45 | 45.60 | 53.94 | 54.71 | 45.13 | 34.87 | 21.93 | 13.48 | 30.66 | ||||||||||||
1970 | -1.90 | 2.89 | 13.61 | 31.70 | 41.06 | 50.97 | 57.00 | 52.32 | 47.43 | 37.81 | 25.20 | 9.87 | 30.66 | |||||||||||||
1971 | -1.48 | 5.70 | a | 12.10 | 27.27 | 36.84 | 53.03 | 52.10 | a | 50.23 | 49.27 | 44.48 | 25.17 | 12.52 | 30.60 | |||||||||||
1972 | -3.94 | 0.00 | b | 11.65 | 24.50 | 42.23 | 47.40 | 54.71 | 54.39 | 44.03 | 32.71 | 24.73 | 7.68 | 28.34 | ||||||||||||
1973 | 8.71 | 8.50 | 26.48 | 31.64 | h | 42.21 | q | 52.20 | 56.10 | 57.13 | 46.13 | 40.71 | 24.57 | 9.00 | 32.95 | b | ||||||||||
1974 | 2.16 | -2.82 | 14.61 | 29.63 | 37.06 | 45.86 | a | 56.32 | 52.42 | 39.33 | 32.84 | 24.80 | 14.29 | 28.88 | ||||||||||||
1975 | 3.52 | 6.82 | 9.29 | 22.30 | 44.97 | a | 52.30 | 57.00 | 52.00 | a | 40.90 | 34.83 | b | 26.43 | 6.00 | d | 29.70 | |||||||||
1976 | -3.32 | 10.24 | 12.87 | 31.90 | 36.26 | 52.04 | b | 52.87 | 50.45 | 39.83 | a | 26.84 | 14.83 | -3.48 | b | 26.78 | ||||||||||
1977 | -7.97 | 4.89 | 22.30 | a | 31.87 | 46.87 | a | 48.23 | 56.76 | b | 48.36 | c | 46.59 | a | 32.35 | 24.21 | b | 8.74 | d | 30.27 | ||||||
1978 | 1.37 | a | 0.07 | 13.97 | b | 27.50 | 43.32 | 48.21 | a | 54.15 | d | 53.56 | d | 46.96 | c | 34.06 | 20.40 | 4.68 | 29.02 | |||||||
1979 | -5.77 | -4.57 | 16.45 | 26.83 | a | 37.84 | 46.83 | 52.67 | d | 49.30 | h | 43.43 | 31.86 | b | 20.87 | 12.23 | a | 25.33 | a | |||||||
1980 | 2.55 | 2.00 | 12.45 | 30.63 | 42.29 | 48.10 | 53.96 | f | 54.96 | c | 41.13 | 29.74 | 24.21 | b | 6.00 | k | 28.81 | b | ||||||||
1981 | 2.92 | e | 9.75 | 18.47 | a | 30.40 | 36.23 | 49.17 | 50.68 | 49.71 | 39.90 | 29.81 | 24.83 | 11.37 | a | 29.44 | ||||||||||
1982 | -9.17 | a | 1.43 | 14.58 | 23.43 | 44.26 | 41.66 | a | 54.28 | b | 48.03 | a | 41.89 | b | 34.53 | a | 21.67 | 14.73 | a | 27.61 | ||||||
1983 | 6.14 | b | 13.84 | c | 20.26 | 27.27 | 33.45 | b | 47.30 | 57.30 | a | 54.43 | a | 45.40 | 33.07 | b | 23.32 | b | -3.83 | b | 29.83 | |||||
1984 | -1.20 | a | 16.39 | a | 7.69 | b | 31.40 | 36.37 | a | 50.20 | 51.87 | a | 54.87 | a | 40.38 | a | 36.87 | a | 19.50 | 9.00 | b | 29.44 | ||||
1985 | 0.19 | 4.19 | a | 20.10 | 31.23 | 43.19 | 45.20 | 50.19 | 50.93 | a | 43.41 | c | 32.45 | 17.04 | d | -2.90 | a | 27.94 | ||||||||
1986 | -4.42 | l | 8.63 | i | 14.67 | m | 33.77 | 42.94 | 45.25 | f | 53.25 | g | 46.05 | j | 40.90 | i | 28.55 | t | 12.62 | n | 12.00 | m | 38.35 | j | ||
1987 | 9.56 | m | 11.16 | i | 18.91 | i | 32.93 | c | 41.07 | d | 50.55 | h | 55.86 | j | 50.65 | k | 42.09 | g | 27.09 | h | 24.74 | g | 16.53 | p | 37.00 | j |
1988 | -7.53 | l | -4.48 | h | 13.95 | j | 27.86 | b | 40.77 | a | 50.45 | a | 55.70 | a | 55.17 | g | 43.67 | i | 27.24 | j | 25.50 | n | 5.62 | r | 43.69 | h |
1989 | 3.32 | l | -4.59 | k | 8.41 | i | 26.65 | d | 37.17 | a | 47.29 | i | 52.56 | o | 50.73 | i | 41.59 | h | 33.38 | b | 17.06 | l | -4.85 | r | 32.40 | i |
1990 | 10.45 | k | 5.06 | j | 17.96 | f | 31.79 | a | 35.74 | h | 49.20 | j | 51.95 | j | 49.75 | k | 42.36 | p | 29.18 | i | 22.38 | n | 11.64 | t | 31.79 | k |
1991 | -5.82 | i | 5.22 | j | 16.00 | k | 32.46 | b | 45.64 | f | 51.63 | k | 50.44 | m | 52.25 | k | 39.75 | j | 30.68 | l | 13.50 | r | 1.06 | o | 32.46 | k |
1992 | 8.30 | k | 9.95 | i | 12.90 | j | 28.09 | g | 39.38 | e | 43.81 | i | 47.58 | l | 44.41 | n | 40.33 | l | 30.37 | l | 20.18 | s | ----- | z | 39.38 | k |
1993 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 53.42 | 38.96 | c | 29.10 | b | 17.52 | a | 13.31 | b | 30.46 | g | |
1994 | -7.16 | 1.89 | 19.10 | a | 25.93 | a | 34.23 | 46.10 | a | 48.61 | 50.17 | a | 47.00 | a | 36.83 | a | 25.00 | a | 15.93 | a | 28.64 | |||||
1995 | 9.87 | 4.86 | 18.90 | 25.93 | a | 38.94 | 53.13 | 55.19 | 58.81 | 42.00 | 36.74 | 12.70 | 5.03 | 30.18 | ||||||||||||
1996 | -3.14 | c | 1.03 | 9.26 | d | 23.97 | a | 36.83 | a | 50.29 | b | 53.75 | k | 54.10 | b | ----- | z | ----- | z | 17.90 | 10.93 | a | 22.35 | c | ||
1997 | 3.32 | c | 10.07 | 15.60 | a | 25.90 | 35.26 | 51.10 | 53.57 | a | 48.94 | 45.76 | a | 34.13 | a | 21.31 | a | 15.57 | a | 30.04 | ||||||
1998 | 11.77 | a | 19.93 | 19.40 | a | 32.61 | b | 43.07 | b | 47.96 | c | 52.55 | 55.55 | 47.23 | d | 38.68 | c | 26.59 | a | 14.68 | c | 34.17 | ||||
1999 | 3.35 | 11.00 | a | 18.03 | 31.48 | a | 42.94 | 50.03 | 58.52 | 52.30 | a | 45.75 | b | 32.91 | i | 28.28 | a | 9.43 | c | 31.92 | a | |||||
2000 | 4.90 | b | 12.18 | a | 23.87 | 28.79 | b | 42.06 | 48.57 | 52.65 | 53.17 | a | 44.97 | 37.39 | 23.03 | a | 2.80 | a | 31.20 | |||||||
2001 | 13.32 | 5.04 | 17.94 | 32.45 | a | 43.68 | 51.87 | 54.71 | 56.74 | 46.10 | 35.00 | a | 32.64 | b | 19.48 | 34.08 | ||||||||||
2002 | 16.03 | a | 15.92 | b | 12.21 | b | 29.79 | a | 37.35 | 53.50 | 59.23 | 55.13 | 50.63 | 31.58 | 21.23 | 17.40 | a | 33.33 | ||||||||
2003 | 4.58 | 2.25 | 16.47 | a | 27.10 | 40.16 | 48.70 | 55.03 | 56.10 | 46.70 | 35.45 | 24.47 | 15.71 | 31.06 | ||||||||||||
2004 | 0.13 | a | 11.10 | 21.77 | 28.93 | a | 39.17 | a | 48.30 | 53.45 | 49.52 | 50.60 | 39.65 | 27.17 | 11.81 | d | 31.80 | |||||||||
2005 | 5.17 | a | 13.68 | 14.58 | 32.80 | 40.39 | 56.00 | 56.32 | 55.42 | 49.40 | 39.81 | 24.63 | 13.55 | 33.48 | ||||||||||||
2006 | 17.65 | 9.25 | d | 18.04 | e | 32.11 | b | 43.23 | a | 50.04 | c | 57.86 | c | 54.35 | 44.36 | b | 30.54 | c | 28.34 | a | 19.03 | a | 33.73 | |||
2007 | 10.07 | b | 2.52 | c | 20.45 | 28.50 | 40.94 | 50.61 | b | 54.77 | 53.73 | a | 46.96 | e | 39.77 | e | 22.59 | a | 8.26 | d | 31.60 | |||||
2008 | 5.19 | d | -2.27 | c | 11.23 | e | 29.45 | a | 35.83 | a | 51.00 | b | 53.87 | a | 50.65 | 46.93 | a | 32.97 | b | 21.03 | a | -3.03 | a | 27.74 | ||
2009 | -7.48 | f | 6.42 | b | 14.25 | c | 27.96 | f | 37.76 | f | 47.48 | c | 49.33 | a | 51.50 | c | 47.64 | b | 30.08 | f | 30.28 | a | 6.34 | b | 31.66 | d |
2010 | 8.35 | e | 9.08 | c | 22.23 | a | 31.61 | g | 41.73 | a | 50.73 | d | 57.21 | c | 56.48 | f | 41.17 | l | 35.37 | d | 23.30 | g | 9.40 | f | 32.10 | e |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 3.20 | 6.18 | 16.20 | 29.24 | 39.88 | 49.49 | 54.35 | 52.87 | 45.03 | 35.16 | 23.38 | 9.92 | 30.43 | |||||||||||||
S.D. | 6.22 | 5.74 | 4.63 | 2.81 | 3.45 | 2.68 | 2.51 | 2.49 | 3.07 | 3.62 | 4.06 | 5.99 | 1.84 | |||||||||||||
SKEW | 0.16 | 0.22 | -0.13 | -0.50 | -0.05 | -0.31 | -0.26 | 0.04 | -0.28 | 0.22 | -0.49 | -0.65 | 0.32 | |||||||||||||
MAX | 17.65 | 19.93 | 26.48 | 33.77 | 46.87 | 56.00 | 59.23 | 58.81 | 50.63 | 44.48 | 32.64 | 19.48 | 34.17 | |||||||||||||
MIN | -9.17 | -4.57 | 5.00 | 22.30 | 33.45 | 41.66 | 48.61 | 48.03 | 38.96 | 26.84 | 12.70 | -3.83 | 26.78 | |||||||||||||
YRS | 42 | 43 | 43 | 46 | 46 | 43 | 42 | 42 | 42 | 43 | 44 | 43 | 35 |