YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 57.12 | f | 54.71 | ----- | z | ----- | z | ----- | z | 5.13 | 29.92 | j | ||
1962 | -9.48 | h | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 52.25 | w | 53.03 | 44.77 | 36.00 | b | 26.95 | h | 6.90 | 35.18 | h | |||
1963 | -6.71 | -2.39 | 18.19 | 32.30 | 41.17 | a | 52.43 | 57.29 | g | 51.71 | 48.77 | 44.97 | 27.10 | -0.16 | 27.94 | a | ||||||||||
1964 | 8.10 | 5.10 | 12.58 | 31.60 | 45.71 | ----- | z | 56.84 | 51.48 | 45.67 | 33.52 | 23.13 | -0.77 | 28.45 | a | |||||||||||
1965 | -8.19 | -4.12 | d | 4.71 | 28.29 | f | ----- | z | ----- | z | ----- | z | 49.00 | s | 41.90 | 34.87 | a | 21.43 | 16.30 | k | 15.10 | f | ||||
1966 | -16.37 | d | -0.22 | a | 19.33 | a | 26.40 | 33.53 | a | 49.66 | a | 57.50 | a | 52.29 | 44.47 | 33.40 | a | 18.52 | a | 7.78 | h | 28.95 | a | |||
1967 | 1.83 | a | -8.30 | a | 15.81 | 29.30 | 33.74 | 50.50 | b | 53.63 | a | 49.23 | a | 43.37 | 32.86 | b | 19.40 | 8.00 | 27.45 | |||||||
1968 | -1.29 | -3.93 | a | 21.83 | a | 31.82 | b | 39.07 | a | ----- | z | 58.95 | l | 53.81 | 47.40 | 39.16 | 22.67 | 4.77 | 25.53 | b | ||||||
1969 | -2.48 | 2.61 | 8.68 | 31.57 | 43.29 | 45.27 | 54.71 | 55.58 | 46.83 | 34.48 | 21.97 | a | 10.45 | 29.41 | ||||||||||||
1970 | -8.19 | -4.43 | 8.45 | 29.17 | 42.00 | 54.00 | a | 58.90 | 54.84 | 46.69 | a | 38.00 | 21.47 | 5.87 | 28.90 | |||||||||||
1971 | -10.48 | 0.75 | 11.87 | 27.63 | 35.58 | 54.17 | 52.32 | 50.58 | 47.03 | 42.19 | 23.67 | 4.97 | 28.36 | |||||||||||||
1972 | -12.65 | -7.45 | 9.29 | 25.20 | 44.90 | 48.07 | 54.81 | 54.45 | 43.07 | 32.19 | 25.03 | -0.45 | 26.37 | |||||||||||||
1973 | 0.03 | 4.07 | 25.74 | 30.33 | 38.71 | 52.80 | 56.03 | 58.84 | 45.97 | 40.71 | 23.40 | 4.26 | 31.74 | |||||||||||||
1974 | -2.03 | -0.79 | 15.52 | 29.57 | 40.32 | 47.57 | 59.35 | 53.61 | 41.00 | 35.81 | 26.33 | 11.94 | 29.85 | |||||||||||||
1975 | 2.52 | 3.50 | 7.97 | 24.73 | 43.35 | 52.53 | 59.45 | 55.00 | 44.07 | 37.45 | 22.87 | 4.03 | 29.79 | |||||||||||||
1976 | -7.42 | 10.83 | 13.19 | 32.10 | 38.84 | 52.10 | 56.10 | 54.16 | 42.63 | 27.84 | 11.97 | -8.03 | 27.03 | |||||||||||||
1977 | -14.71 | 3.93 | 23.94 | 34.87 | 47.90 | 51.93 | 58.71 | 50.39 | 47.93 | 34.61 | 21.17 | 4.90 | 30.46 | |||||||||||||
1978 | -8.45 | -7.46 | 10.94 | 28.77 | 43.26 | 50.73 | 56.84 | 55.81 | 50.80 | 36.19 | 18.31 | a | -1.32 | 27.87 | ||||||||||||
1979 | -13.58 | -5.61 | 15.61 | 26.93 | 37.35 | 48.20 | 56.84 | 53.45 | 48.03 | 34.19 | 22.37 | 11.81 | 27.97 | |||||||||||||
1980 | -0.61 | -0.69 | 8.90 | 31.40 | 43.26 | 50.50 | 56.65 | 57.72 | b | 46.37 | 31.87 | 23.73 | 3.27 | a | 29.36 | |||||||||||
1981 | -0.84 | 8.46 | 20.23 | 32.80 | 39.84 | 51.80 | 57.55 | 57.42 | 45.57 | 34.13 | 28.07 | 7.29 | 31.86 | |||||||||||||
1982 | -14.13 | -0.43 | 14.71 | 27.70 | 46.17 | a | 46.43 | 58.83 | a | 53.42 | 47.38 | a | 39.68 | 20.43 | 12.89 | d | 29.42 | |||||||||
1983 | 3.87 | 17.14 | 21.55 | 26.97 | 38.74 | 52.00 | 61.55 | 60.55 | 50.07 | 37.16 | 27.00 | -7.26 | 32.44 | |||||||||||||
1984 | -1.55 | 17.24 | 11.39 | 31.90 | 40.16 | 54.77 | 56.74 | 59.13 | 44.27 | 41.58 | 22.50 | 6.90 | 32.09 | |||||||||||||
1985 | -1.03 | 0.04 | 22.23 | ----- | z | ----- | z | 47.26 | c | 54.75 | c | 53.57 | a | 47.55 | a | 35.26 | 15.60 | -6.06 | 26.92 | b | ||||||
1986 | 2.67 | a | 0.68 | 19.58 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 7.64 | i | ||
1987 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1988 | ----- | z | ----- | z | ----- | z | 28.50 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 28.50 | k |
1989 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1990 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 54.06 | 55.38 | g | 42.00 | p | 33.65 | 25.66 | a | 4.93 | b | 29.57 | h | ||
1991 | -0.97 | b | 6.75 | 19.17 | a | 32.93 | a | 49.53 | a | 55.56 | e | 57.57 | c | 58.23 | 46.36 | e | 33.87 | a | 16.97 | a | 5.75 | g | 34.18 | a | ||
1992 | 8.32 | 16.04 | a | 19.73 | a | 31.00 | 45.58 | 50.07 | 52.87 | a | 52.80 | a | 47.63 | 33.97 | b | 25.31 | a | 10.23 | 32.80 | |||||||
1993 | 1.26 | 5.36 | 15.13 | 29.07 | 43.06 | 51.23 | 58.03 | 57.61 | 42.33 | 31.09 | h | 21.23 | 11.33 | a | 30.51 | a | ||||||||||
1994 | -11.45 | -1.39 | 21.23 | a | 30.10 | 43.84 | 54.00 | 57.58 | 54.19 | 51.00 | c | 44.46 | r | ----- | z | ----- | z | 33.23 | c | |||||||
1995 | 6.14 | c | 3.25 | 20.74 | 26.23 | 40.23 | 56.07 | 58.67 | a | 60.97 | 43.66 | a | 38.39 | 14.60 | 4.36 | c | 31.11 | |||||||||
1996 | -8.64 | c | 1.76 | 10.29 | 25.80 | 39.39 | 53.47 | 54.70 | h | 55.77 | e | 49.73 | 37.65 | 16.50 | 5.48 | 26.11 | a | |||||||||
1997 | -1.32 | 7.57 | 17.74 | 27.73 | 38.03 | a | 54.50 | 57.87 | 53.81 | 50.40 | 39.10 | 21.33 | ----- | z | 33.34 | a | ||||||||||
1998 | ----- | z | 21.50 | d | 19.41 | b | 32.78 | c | 46.07 | b | 52.23 | 57.74 | 58.23 | 50.18 | h | 39.53 | l | 26.76 | e | 12.35 | 36.34 | c | ||||
1999 | 0.97 | b | 13.43 | 19.53 | a | 32.73 | 46.58 | 54.67 | 61.10 | 57.74 | 48.00 | 35.00 | 27.80 | 12.45 | 34.17 | |||||||||||
2000 | 0.87 | 10.90 | 25.32 | 29.37 | 45.45 | 48.83 | a | 57.77 | 57.52 | d | 46.17 | 38.63 | d | 25.69 | a | -4.59 | b | 31.83 | ||||||||
2001 | 8.87 | a | -3.50 | 14.94 | 34.17 | 45.40 | a | 54.90 | 57.97 | 58.52 | 47.32 | b | 36.16 | 33.03 | 16.65 | 33.70 | ||||||||||
2002 | 10.50 | g | 13.82 | 8.58 | 30.83 | 37.87 | 56.03 | 63.13 | a | 57.04 | g | 51.33 | 32.26 | 21.27 | 14.90 | 33.00 | b | |||||||||
2003 | -0.61 | -0.44 | a | 15.17 | a | 29.76 | a | 40.94 | 51.23 | 57.94 | 59.87 | 49.20 | 37.16 | 22.97 | 12.65 | 31.32 | ||||||||||
2004 | -2.42 | 9.72 | 20.81 | 26.50 | b | 39.29 | 49.82 | h | 56.48 | 50.46 | c | 53.63 | 39.32 | ----- | z | ----- | z | 32.65 | c | |||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | -3.07 | 3.51 | 16.05 | 29.74 | 41.66 | 51.68 | 57.26 | 55.15 | 46.71 | 36.20 | 22.42 | 5.59 | 30.23 | |||||||||||||
S.D. | 6.81 | 7.58 | 5.43 | 2.64 | 3.90 | 2.86 | 2.33 | 3.06 | 2.92 | 3.39 | 4.23 | 6.36 | 2.17 | |||||||||||||
SKEW | -0.23 | 0.55 | -0.18 | -0.09 | -0.12 | -0.42 | 0.09 | 0.07 | 0.12 | 0.26 | -0.19 | -0.46 | 0.02 | |||||||||||||
MAX | 8.87 | 21.50 | 25.74 | 34.87 | 49.53 | 56.07 | 63.13 | 60.97 | 53.63 | 44.97 | 33.03 | 16.65 | 34.17 | |||||||||||||
MIN | -16.37 | -8.30 | 4.71 | 24.73 | 33.53 | 45.27 | 52.32 | 49.23 | 41.00 | 27.84 | 11.97 | -8.03 | 26.37 | |||||||||||||
YRS | 36 | 38 | 38 | 36 | 35 | 33 | 34 | 37 | 37 | 36 | 36 | 34 | 23 |