YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 57.81 | 53.23 | 45.90 | a | 29.45 | 19.74 | c | -0.58 | 34.26 | f | ||||
1949 | -7.13 | -10.25 | 12.55 | 30.37 | 40.39 | 48.80 | 54.42 | 53.06 | 38.17 | 30.27 | a | 22.93 | -3.74 | 25.82 | ||||||||||||
1950 | -21.16 | -5.86 | 8.52 | 22.10 | 37.06 | 48.20 | 52.77 | 48.94 | 44.47 | 32.97 | 9.80 | -2.47 | a | 22.94 | ||||||||||||
1951 | -9.45 | 1.21 | 1.83 | a | 26.27 | 41.81 | 45.03 | 52.84 | 50.00 | f | 41.30 | 30.57 | a | 9.47 | -3.43 | a | 21.59 | a | ||||||||
1952 | -8.83 | a | 7.21 | 9.00 | 31.87 | 38.56 | d | 50.30 | 53.52 | b | 50.61 | c | 44.25 | b | 26.71 | 16.59 | c | 5.87 | 27.14 | |||||||
1953 | 0.65 | 7.54 | 14.21 | b | 22.59 | a | 39.68 | 50.50 | 55.04 | e | 55.42 | 42.11 | b | 37.72 | b | 23.60 | 8.20 | a | 29.77 | |||||||
1954 | -12.90 | 20.25 | 11.74 | 27.43 | 35.06 | 49.83 | 55.52 | 52.50 | y | 44.92 | d | 32.45 | 22.70 | 14.03 | 27.37 | a | ||||||||||
1955 | 0.84 | -3.96 | 7.48 | 35.90 | 45.24 | b | 49.83 | a | 60.35 | 56.00 | 40.80 | 30.87 | 6.67 | -3.77 | 27.19 | |||||||||||
1956 | -3.16 | -2.93 | 10.94 | 23.30 | 40.29 | 55.57 | 53.26 | 51.81 | 39.47 | 34.13 | 20.93 | 9.16 | 27.73 | |||||||||||||
1957 | -6.52 | 1.75 | 15.87 | 29.03 | 40.52 | 46.96 | g | 60.00 | 55.74 | 41.23 | 35.52 | 20.10 | 11.84 | 27.73 | a | |||||||||||
1958 | 7.87 | 0.50 | 19.13 | 30.87 | 40.74 | 47.04 | b | 52.62 | b | 53.61 | c | 44.39 | b | 32.50 | a | 17.26 | c | 0.50 | c | 28.92 | ||||||
1959 | -6.48 | -3.44 | c | ----- | z | 27.88 | e | 38.83 | b | 53.07 | a | 54.32 | 53.13 | 42.43 | 28.26 | 12.22 | c | 16.55 | b | 28.80 | a | |||||
1960 | -2.20 | a | 0.38 | 6.48 | 29.79 | a | 39.00 | a | 48.27 | 55.00 | 53.38 | b | 43.33 | 32.81 | 17.70 | 0.68 | 27.05 | |||||||||
1961 | 0.74 | 5.93 | 22.48 | 24.90 | 36.32 | 50.23 | 53.90 | 54.59 | b | 42.28 | a | 35.23 | 16.77 | -2.42 | 28.41 | |||||||||||
1962 | -2.23 | a | -0.78 | a | 12.16 | 27.60 | 43.10 | 52.17 | a | 53.77 | 54.19 | 40.72 | a | 34.04 | c | 23.97 | 5.30 | a | 28.67 | |||||||
1963 | -8.23 | 0.00 | 17.74 | d | 30.83 | 39.58 | 55.50 | 57.65 | 53.14 | b | 45.90 | 38.79 | c | 18.77 | -2.84 | 28.90 | ||||||||||
1964 | 3.23 | 8.69 | 4.77 | 29.32 | b | 42.52 | d | 50.34 | a | 56.86 | b | 48.47 | a | 37.27 | 28.90 | 15.59 | a | -6.69 | b | 26.61 | ||||||
1965 | -10.13 | a | -1.64 | c | 5.53 | a | 30.30 | 41.45 | b | 49.97 | 56.21 | b | 52.26 | 36.10 | 33.26 | d | 15.77 | 11.45 | b | 26.71 | ||||||
1966 | -15.81 | -2.93 | 19.97 | b | 25.28 | e | 37.21 | b | 51.70 | c | 59.93 | b | 51.27 | a | 41.59 | a | 30.93 | a | 10.86 | b | 1.93 | b | 25.99 | |||
1967 | 0.06 | -3.46 | d | 14.10 | b | 25.90 | 34.83 | b | 48.04 | b | 49.39 | c | 46.96 | e | 41.86 | a | 33.21 | c | 18.93 | a | 3.79 | b | 26.14 | |||
1968 | -3.35 | -0.31 | 19.68 | c | 29.13 | 36.87 | 50.45 | a | 53.63 | a | 52.14 | b | 44.12 | e | 30.39 | c | 18.03 | a | -0.76 | b | 27.50 | |||||
1969 | -13.00 | 2.89 | 3.03 | 30.00 | 40.70 | a | 44.93 | c | 54.86 | b | 56.85 | d | 43.58 | f | 30.55 | 21.20 | 8.55 | 25.51 | a | |||||||
1970 | -7.19 | 0.29 | 6.45 | 27.85 | c | 38.89 | c | 54.66 | a | 56.17 | b | 53.65 | h | 44.33 | 33.21 | g | 16.93 | -1.27 | a | 23.71 | b | |||||
1971 | -8.55 | b | -0.69 | b | 15.03 | a | 27.69 | d | 37.61 | 54.60 | 52.63 | d | 52.23 | 43.20 | 36.00 | 19.40 | 0.10 | 27.44 | ||||||||
1972 | -7.32 | -3.52 | 14.52 | 29.03 | 45.26 | 50.77 | 51.00 | a | 54.65 | 42.50 | 28.83 | a | 20.63 | -2.71 | 26.97 | |||||||||||
1973 | 5.32 | 8.18 | 26.68 | 27.10 | a | 38.52 | 50.57 | 53.55 | 57.97 | 43.77 | 37.23 | 15.40 | 2.68 | 30.58 | ||||||||||||
1974 | -8.10 | a | -11.88 | t | 12.13 | 30.57 | 40.00 | 48.07 | 57.10 | 49.39 | 38.70 | 33.13 | 20.00 | 10.61 | 30.14 | a | ||||||||||
1975 | 1.19 | 1.89 | 11.74 | 27.13 | 42.71 | 52.77 | 59.03 | 53.00 | 40.23 | 35.32 | 20.93 | 5.00 | 29.25 | |||||||||||||
1976 | -0.45 | 13.55 | 11.26 | 32.50 | 38.94 | 52.70 | 54.10 | 54.74 | 42.03 | 25.97 | 12.07 | -0.68 | 28.06 | |||||||||||||
1977 | -11.48 | 10.04 | 21.71 | 33.10 | 50.65 | 51.57 | 57.03 | 47.90 | a | 44.60 | 31.63 | a | 14.77 | -4.38 | b | 28.93 | ||||||||||
1978 | -14.07 | b | -6.67 | a | 13.35 | e | 31.34 | a | 43.03 | b | 49.16 | e | 52.93 | d | 49.04 | c | 45.19 | i | 29.00 | o | 9.52 | a | -3.03 | a | 22.46 | b |
1979 | -13.61 | -12.04 | a | 9.83 | b | 25.34 | a | 35.50 | c | 49.77 | 54.87 | a | 47.48 | b | 44.75 | b | 30.59 | b | 14.19 | c | 12.17 | g | 26.06 | a | ||
1980 | -3.76 | b | 2.08 | d | 12.17 | a | 30.67 | 41.23 | 52.47 | 56.06 | 51.68 | 43.26 | c | 31.76 | f | 24.63 | c | 5.52 | d | 28.73 | a | |||||
1981 | 2.04 | c | 9.88 | b | 21.78 | d | 30.25 | f | 40.07 | d | 49.90 | a | 57.33 | a | 55.10 | a | 43.58 | d | 34.88 | f | 24.35 | d | 1.79 | g | 33.78 | c |
1982 | -20.46 | c | -2.67 | a | 17.78 | h | 25.00 | c | 43.67 | d | 44.79 | b | 55.31 | b | 50.60 | a | 40.46 | b | 35.45 | 16.35 | d | 12.56 | d | 27.37 | a | |
1983 | 9.85 | r | 17.00 | b | 22.46 | e | 26.10 | a | 36.45 | b | 51.23 | 59.92 | f | 57.03 | a | 39.04 | b | 31.26 | 23.81 | c | -8.34 | b | 29.60 | b | ||
1984 | 1.80 | a | 16.00 | d | 13.09 | h | 30.12 | f | 39.62 | b | 52.39 | b | 55.30 | a | 56.19 | d | 36.93 | c | 32.30 | a | 17.21 | b | -1.14 | i | 34.19 | c |
1985 | -4.77 | 0.57 | 20.37 | d | 30.46 | b | 42.97 | a | 44.93 | c | 53.00 | g | 50.70 | d | 40.38 | d | 30.87 | 4.41 | a | -6.42 | l | 26.09 | b | |||
1986 | 6.04 | d | 0.27 | f | 23.46 | c | 30.70 | c | 42.93 | a | 52.69 | d | 54.67 | d | 49.58 | e | 44.48 | a | 32.41 | d | 9.35 | j | 9.72 | f | 37.44 | c |
1987 | 9.64 | f | 17.43 | e | 19.37 | d | 34.46 | d | 44.65 | e | 52.48 | c | 58.36 | c | 50.73 | e | 44.46 | d | 26.23 | i | 25.14 | i | 13.04 | e | 37.22 | c |
1988 | -6.85 | e | -2.67 | e | 18.24 | b | 26.59 | c | 45.20 | a | 58.28 | e | 57.08 | f | 54.68 | f | 43.50 | 25.72 | f | 15.44 | e | 3.68 | l | 24.72 | d | |
1989 | -0.39 | h | -4.39 | e | 9.40 | f | 27.15 | c | 41.30 | a | 47.25 | b | 57.87 | a | 53.31 | b | 42.64 | b | 31.20 | f | 13.61 | g | -6.12 | g | 37.88 | e |
1990 | 10.72 | f | 6.96 | d | 21.14 | b | 27.44 | e | 38.41 | b | 51.90 | a | 54.27 | e | 50.75 | g | 44.79 | f | 27.64 | f | 15.73 | h | 1.25 | k | 33.35 | f |
1991 | -7.54 | g | 10.77 | f | 17.19 | e | 30.92 | d | 46.37 | d | 53.62 | d | 55.27 | e | 54.85 | e | 42.48 | c | 25.00 | d | 14.05 | j | 6.06 | n | 40.71 | d |
1992 | 7.92 | e | 13.60 | i | 21.69 | e | 27.26 | g | 41.95 | i | 45.72 | e | 48.78 | h | 43.57 | j | 38.05 | h | 23.40 | k | 16.00 | i | -4.56 | m | 25.11 | i |
1993 | -6.53 | n | 0.92 | o | 14.50 | q | 33.75 | v | 43.10 | a | 50.37 | 55.68 | 56.19 | 42.17 | 30.32 | 18.27 | 7.97 | 38.01 | d | |||||||
1994 | -11.61 | -4.93 | 24.03 | 31.37 | 46.55 | 55.67 | 55.03 | 53.65 | 49.20 | 39.68 | 23.47 | 11.17 | b | 31.11 | ||||||||||||
1995 | 2.71 | 6.43 | 18.10 | a | 29.07 | 43.48 | 57.00 | 58.68 | 58.97 | 46.14 | a | 34.97 | a | 15.27 | 6.06 | 31.41 | ||||||||||
1996 | -8.23 | 5.72 | 10.52 | 27.07 | a | 41.61 | 54.60 | 56.19 | 56.71 | 47.10 | 33.52 | 8.10 | -1.65 | 27.61 | ||||||||||||
1997 | -6.97 | 7.70 | a | 13.94 | 26.03 | 40.97 | ----- | z | 57.65 | k | 55.81 | 49.10 | 35.94 | 18.90 | 19.58 | 26.10 | b | |||||||||
1998 | 4.13 | a | 21.82 | 16.61 | 37.53 | 47.68 | 51.63 | 58.52 | 61.30 | u | 44.93 | o | 37.61 | 23.73 | 11.61 | 31.09 | b | |||||||||
1999 | -1.23 | 13.46 | 22.81 | 33.43 | 46.39 | 53.47 | 59.77 | 56.35 | 44.47 | 33.71 | 25.53 | ----- | z | 35.29 | a | |||||||||||
2000 | 0.79 | c | 13.83 | 24.55 | 30.63 | 44.48 | 50.80 | 58.77 | 57.32 | 45.83 | 35.60 | a | 17.45 | a | -6.76 | b | 31.11 | |||||||||
2001 | 8.74 | -2.71 | 19.45 | 32.93 | 44.90 | 52.68 | b | ----- | z | 57.87 | 43.69 | n | 32.39 | 28.27 | 11.71 | 28.62 | b | |||||||||
2002 | ----- | z | ----- | z | ----- | z | ----- | z | 37.52 | 59.94 | n | 60.73 | a | 55.39 | 48.10 | 26.57 | h | 20.45 | a | 12.74 | 39.15 | f | ||||
2003 | 0.08 | e | -0.59 | a | 13.13 | 32.17 | 43.00 | 53.17 | 58.35 | 58.45 | 45.90 | 35.52 | 14.07 | 13.90 | 30.59 | |||||||||||
2004 | -4.00 | e | 9.34 | 21.58 | e | 32.40 | 38.26 | 50.24 | a | 56.81 | 50.42 | 49.93 | 36.70 | a | 20.90 | 11.81 | 31.20 | |||||||||
2005 | -1.77 | 10.94 | j | 17.48 | 35.77 | 43.74 | 55.07 | 58.86 | b | 52.71 | 46.53 | 33.81 | 21.13 | 9.32 | 33.88 | a | ||||||||||
2006 | 21.09 | t | 1.50 | 19.10 | 37.53 | 46.45 | 55.43 | 59.90 | a | 54.68 | 42.57 | 27.77 | 15.40 | e | 2.92 | r | 36.03 | b | ||||||||
2007 | ----- | z | 3.67 | g | 17.87 | 30.90 | 43.06 | 53.37 | 60.72 | b | 52.26 | 43.00 | 34.84 | 16.60 | 1.76 | j | 39.18 | c | ||||||||
2008 | ----- | z | ----- | z | ----- | z | 29.27 | s | 37.81 | e | 51.47 | 58.43 | a | 56.57 | a | ----- | z | ----- | z | ----- | z | ----- | z | 51.07 | h | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | -4.34 | 3.21 | 15.41 | 29.42 | 41.23 | 51.17 | 56.05 | 53.41 | 43.11 | 32.76 | 17.73 | 4.42 | 28.20 | |||||||||||||
S.D. | 7.06 | 7.76 | 6.03 | 3.48 | 3.43 | 3.08 | 2.62 | 3.00 | 3.01 | 3.27 | 5.06 | 7.16 | 1.99 | |||||||||||||
SKEW | -0.25 | 0.54 | -0.32 | 0.22 | 0.28 | -0.17 | -0.06 | -0.25 | -0.06 | -0.19 | -0.47 | 0.10 | -0.25 | |||||||||||||
MAX | 8.74 | 21.82 | 26.68 | 37.53 | 50.65 | 58.28 | 60.73 | 58.97 | 49.93 | 39.68 | 28.27 | 19.58 | 31.41 | |||||||||||||
MIN | -21.16 | -12.04 | 1.83 | 22.10 | 34.83 | 44.79 | 49.39 | 46.96 | 36.10 | 25.00 | 4.41 | -8.34 | 22.94 | |||||||||||||
YRS | 50 | 51 | 53 | 54 | 59 | 57 | 55 | 54 | 54 | 50 | 54 | 47 | 28 |