YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 68.47 | 65.63 | 60.03 | a | 41.34 | 28.11 | g | 9.92 | 49.08 | g | ||||
1949 | 2.34 | 1.86 | 20.94 | 44.32 | 53.48 | 61.23 | 66.47 | 68.11 | 52.79 | a | 41.68 | a | 33.03 | 5.98 | 37.69 | |||||||||||
1950 | -11.92 | 5.50 | 18.44 | 31.23 | 47.82 | 63.32 | 66.11 | 64.35 | 58.25 | 46.60 | 20.83 | 7.16 | b | 34.81 | ||||||||||||
1951 | 1.82 | 11.32 | 13.17 | a | 39.00 | 56.89 | 58.68 | 68.08 | 64.50 | f | 53.82 | 43.07 | b | 21.45 | 5.80 | a | 33.92 | a | ||||||||
1952 | 1.74 | b | 16.79 | 18.50 | 47.43 | 54.09 | d | 65.07 | 68.31 | b | 65.89 | c | 60.54 | b | 42.58 | 28.85 | c | 16.97 | 40.56 | |||||||
1953 | 13.23 | 19.20 | 26.31 | b | 36.09 | a | 52.77 | 63.13 | 67.92 | e | 70.85 | 59.57 | b | 53.59 | b | 35.45 | 19.69 | b | 43.15 | |||||||
1954 | -0.97 | 30.86 | 23.56 | 41.30 | 49.76 | 61.75 | 69.95 | 68.50 | y | 55.94 | d | 44.97 | a | 35.10 | 23.71 | 39.63 | a | |||||||||
1955 | 12.45 | 7.02 | 19.73 | 49.82 | 59.47 | b | 62.78 | a | 73.13 | 72.13 | 57.08 | 47.85 | 16.97 | 5.81 | 40.35 | |||||||||||
1956 | 7.90 | 8.76 | 21.24 | 36.05 | 53.95 | a | 69.25 | 67.13 | 67.79 | 55.48 | 49.89 | 30.50 | 19.15 | 40.59 | ||||||||||||
1957 | 4.10 | 12.95 | 27.81 | 42.15 | 55.18 | 61.68 | h | 74.53 | 68.05 | 55.40 | 45.71 | 29.08 | 22.66 | 39.78 | a | |||||||||||
1958 | 18.26 | 11.77 | 28.42 | 44.17 | a | 57.35 | 60.20 | b | 66.22 | b | 69.95 | c | 60.79 | b | 48.15 | a | 27.86 | e | 11.62 | c | 42.06 | |||||
1959 | 4.28 | a | 9.02 | c | ----- | z | 43.90 | e | 52.90 | b | 68.10 | a | 70.55 | 71.16 | 57.67 | 40.02 | 20.58 | d | 24.64 | b | 42.07 | a | ||||
1960 | 8.47 | a | 11.12 | 17.06 | 41.67 | a | 54.62 | a | 61.73 | 71.52 | 70.30 | c | 60.00 | 47.21 | 29.75 | 12.44 | 40.49 | |||||||||
1961 | 11.87 | 17.29 | 32.84 | 37.82 | 52.96 | c | 68.83 | 68.95 | 71.55 | i | 55.26 | a | 48.60 | 30.35 | 8.95 | 39.43 | a | |||||||||
1962 | 8.60 | a | 8.06 | a | 22.13 | 41.18 | 53.47 | 63.93 | a | 66.31 | 68.82 | 55.26 | a | 48.89 | c | 34.52 | 17.40 | a | 40.71 | |||||||
1963 | 3.31 | 12.89 | 32.65 | d | 44.10 | 53.69 | 68.30 | 71.98 | 68.31 | b | 61.83 | 55.70 | c | 32.23 | 8.90 | a | 42.82 | |||||||||
1964 | 15.27 | 20.40 | 19.44 | 42.75 | b | 57.44 | d | 62.38 | b | 70.91 | b | 63.87 | a | 53.48 | 44.97 | 27.43 | a | 3.69 | b | 40.17 | ||||||
1965 | 0.95 | b | 11.40 | d | 16.52 | a | 40.85 | 55.57 | d | 63.13 | 68.78 | b | 66.60 | 47.05 | a | 47.85 | e | 27.75 | 22.21 | b | 39.05 | |||||
1966 | -5.19 | 9.27 | 31.31 | b | 36.88 | e | 52.25 | c | 65.22 | c | 73.09 | b | 65.28 | b | 57.55 | a | 45.60 | b | 22.07 | b | 13.73 | c | 38.92 | |||
1967 | 11.35 | 9.58 | d | 26.21 | b | 37.32 | 50.34 | b | 61.84 | b | 67.96 | c | 66.75 | e | 59.22 | a | 48.62 | r | 29.80 | g | 15.04 | c | 40.56 | b | ||
1968 | 7.86 | b | 11.12 | 32.48 | c | 43.02 | 50.26 | 62.43 | a | 67.75 | a | 66.81 | b | 57.00 | e | 44.34 | c | 30.50 | b | 8.55 | c | 40.18 | ||||
1969 | -3.48 | 12.07 | 15.11 | 42.27 | 55.72 | a | 57.50 | c | 67.90 | b | 72.81 | d | 58.98 | g | 41.15 | a | 31.37 | 17.48 | 37.26 | a | ||||||
1970 | 1.81 | 13.12 | 17.95 | 37.35 | d | 50.54 | d | 68.47 | a | 71.28 | b | 71.11 | i | 59.47 | 47.04 | g | 26.93 | 10.58 | a | 35.75 | b | |||||
1971 | 0.31 | b | 10.38 | b | 25.22 | b | 40.74 | g | 52.16 | 66.32 | 65.80 | f | 69.39 | 57.37 | 46.66 | 27.78 | 10.44 | 36.60 | b | |||||||
1972 | 3.90 | 7.29 | 25.73 | a | 39.70 | 58.82 | 65.82 | 66.35 | a | 69.82 | 56.52 | 42.05 | a | 27.52 | 7.15 | 39.22 | ||||||||||
1973 | 15.19 | 19.86 | 35.21 | 40.66 | b | 55.11 | 65.28 | 69.71 | 73.56 | 56.48 | 49.65 | 23.95 | 11.17 | a | 42.99 | |||||||||||
1974 | 3.92 | a | -2.25 | t | 22.15 | 41.77 | 51.24 | 63.60 | 72.77 | 63.56 | 55.37 | 48.90 | 29.42 | 20.63 | 43.03 | a | ||||||||||
1975 | 12.61 | 11.82 | 22.57 | a | 33.90 | 55.56 | 64.28 | 72.40 | 67.13 | a | 54.67 | a | 48.53 | 31.83 | 16.37 | a | 40.97 | |||||||||
1976 | 10.31 | 23.71 | 23.71 | b | 45.78 | 56.15 | 66.64 | a | 70.39 | 71.11 | 60.32 | 40.39 | 25.13 | 10.48 | 42.01 | |||||||||||
1977 | -1.74 | 20.98 | 32.73 | 49.40 | 64.40 | a | 65.90 | 70.43 | a | 61.78 | a | 55.72 | a | 46.13 | a | 25.23 | 4.95 | b | 41.33 | |||||||
1978 | -3.14 | f | 4.81 | b | 24.38 | e | 41.88 | a | 58.72 | f | 63.70 | e | 68.11 | d | 66.52 | e | 58.83 | j | 45.86 | q | 21.66 | e | 7.64 | b | 37.34 | d |
1979 | -3.10 | a | -0.90 | b | 20.45 | c | 33.84 | a | 47.56 | d | 63.10 | 69.12 | a | 63.09 | c | 61.27 | b | 43.09 | b | 25.42 | d | 24.59 | h | 38.45 | a | |
1980 | 6.31 | b | 13.02 | e | 22.92 | a | 48.48 | 58.98 | 65.73 | 70.61 | 63.47 | a | 54.98 | d | 42.29 | g | 34.19 | d | 15.83 | e | 41.32 | a | ||||
1981 | 13.21 | c | 19.84 | c | 34.89 | i | 44.70 | j | 53.76 | d | 62.69 | a | 71.57 | q | 68.78 | f | 57.85 | d | 47.27 | i | 35.31 | d | 11.28 | h | 40.44 | f |
1982 | -10.61 | h | 6.91 | f | 25.75 | i | 38.52 | e | 55.00 | i | 58.63 | c | 70.26 | d | 66.08 | g | 55.98 | i | 46.70 | i | 24.87 | o | 20.26 | j | 55.80 | i |
1983 | 16.17 | v | 24.36 | g | 29.30 | h | 37.88 | b | 50.79 | c | 64.35 | 73.36 | j | 74.36 | c | 53.42 | f | 42.78 | b | 31.00 | c | -0.12 | c | 43.00 | e | |
1984 | 12.36 | b | 26.07 | f | 23.52 | j | 41.92 | f | 54.14 | b | 64.57 | c | 70.25 | a | 71.63 | e | 52.34 | e | 44.10 | b | 27.70 | c | 11.59 | i | 49.64 | d |
1985 | 7.77 | a | 12.32 | 32.30 | d | 47.04 | c | 59.42 | a | 59.28 | c | 70.15 | g | 64.63 | d | 52.35 | d | 43.74 | 16.09 | c | 3.50 | m | 39.49 | b | ||
1986 | 17.96 | e | 11.02 | f | 36.41 | d | 42.04 | e | 57.10 | a | 67.29 | d | 69.52 | d | 65.23 | e | 54.95 | a | 46.39 | d | 21.88 | j | 21.22 | f | 50.76 | c |
1987 | 18.74 | f | 26.76 | e | 28.42 | e | 51.44 | d | 59.75 | e | 67.23 | d | 71.24 | d | 65.13 | e | 59.54 | e | 42.93 | i | 36.81 | i | 22.68 | f | 53.69 | d |
1988 | 5.75 | e | 10.33 | e | 30.09 | b | 45.48 | d | 60.58 | a | 75.27 | f | 74.94 | f | 71.34 | f | 58.35 | 42.02 | f | 25.84 | e | 16.31 | m | 33.77 | e | |
1989 | 14.13 | h | 7.13 | e | 19.92 | f | 40.85 | c | 57.03 | a | 62.71 | b | 73.75 | a | 69.00 | b | 58.32 | b | 48.60 | f | 27.24 | g | 5.98 | g | 52.69 | e |
1990 | 23.62 | f | 21.17 | d | 32.91 | b | 43.28 | e | 54.19 | b | 65.26 | a | 68.23 | e | 68.33 | g | 59.75 | h | 45.82 | f | 31.14 | h | 14.32 | k | 47.51 | f |
1991 | 6.17 | g | 24.77 | f | 31.37 | e | 45.60 | d | 58.78 | d | 66.88 | d | 69.75 | e | 71.44 | f | 57.79 | d | 40.74 | d | 23.73 | j | 18.00 | o | 52.99 | e |
1992 | 19.70 | f | 24.88 | i | 33.35 | e | 41.52 | h | 58.03 | l | 60.54 | f | 61.52 | k | 60.95 | k | 53.10 | i | 38.71 | l | 24.25 | l | 7.64 | m | 33.35 | k |
1993 | 6.56 | o | 14.23 | q | 25.12 | r | 45.81 | v | 57.23 | a | 61.82 | 65.89 | 68.18 | 55.92 | 45.35 | 27.52 | a | 17.00 | 49.86 | d | ||||||
1994 | -2.39 | 6.04 | 33.75 | a | 44.98 | 60.48 | a | 67.22 | 66.68 | 67.19 | 62.48 | 49.13 | 32.27 | 20.26 | b | 42.34 | ||||||||||
1995 | 10.61 | 15.98 | 25.87 | a | 39.42 | 54.77 | 68.73 | 69.65 | 71.32 | 60.09 | a | 45.58 | a | 24.03 | 13.85 | 41.66 | ||||||||||
1996 | 3.08 | 16.07 | 21.26 | 38.38 | a | 53.98 | 67.77 | 69.17 | a | 70.32 | 59.73 | 47.05 | 17.57 | 6.53 | 39.24 | |||||||||||
1997 | 1.65 | a | 18.06 | a | 23.90 | 37.93 | 55.50 | ----- | z | 69.20 | k | 70.10 | 62.85 | 48.31 | 26.70 | 26.63 | 37.16 | b | ||||||||
1998 | 11.77 | a | 27.88 | 26.02 | 50.45 | 60.68 | 63.12 | 72.77 | 73.55 | u | 60.20 | o | 49.29 | 30.47 | 21.15 | 41.36 | b | |||||||||
1999 | 8.91 | b | 23.77 | 33.08 | 44.78 | 57.60 | 65.46 | g | 71.96 | d | 69.50 | 56.60 | a | 47.29 | j | 38.98 | f | ----- | z | 45.78 | d | |||||
2000 | 12.58 | m | 24.27 | i | 36.66 | i | 44.83 | f | 57.93 | h | 62.33 | g | 70.82 | a | 69.39 | h | 59.02 | 49.07 | j | 24.40 | j | 1.48 | b | 43.77 | i | |
2001 | 18.48 | 7.30 | 28.26 | 44.88 | 58.16 | 64.11 | b | ----- | z | 71.33 | a | 56.53 | n | 43.07 | b | 38.10 | j | 20.52 | 39.57 | c | ||||||
2002 | ----- | z | ----- | z | ----- | z | ----- | z | 51.12 | a | 72.31 | n | 72.90 | k | 67.90 | 61.65 | g | 31.31 | o | 31.36 | l | 21.60 | a | 46.87 | i | |
2003 | 8.97 | o | 9.74 | k | 23.55 | a | 45.42 | 54.35 | 63.68 | 69.44 | 71.98 | 59.05 | 50.16 | 23.28 | 22.11 | 48.30 | b | |||||||||
2004 | 4.67 | e | 17.33 | 31.02 | e | 45.48 | 50.97 | 60.25 | b | 68.00 | i | 62.00 | h | 60.83 | 46.92 | a | 34.75 | 20.45 | 37.27 | b | ||||||
2005 | 8.37 | a | 20.83 | m | 28.77 | g | 49.03 | 53.66 | 66.05 | 70.96 | h | 66.69 | 61.80 | 47.53 | 32.52 | 18.92 | 44.95 | c | ||||||||
2006 | 28.23 | t | 12.70 | 28.18 | 50.42 | 57.95 | 65.72 | 73.47 | a | 69.50 | 57.00 | 40.73 | a | 29.86 | e | 18.54 | r | 48.55 | b | |||||||
2007 | ----- | z | 10.67 | g | 31.44 | 41.63 | 58.00 | a | 66.72 | 72.19 | b | 65.90 | 59.12 | 47.84 | 30.18 | 11.38 | n | 52.56 | c | |||||||
2008 | ----- | z | ----- | z | ----- | z | 41.70 | t | 51.80 | f | 62.50 | b | 69.98 | a | 69.45 | a | ----- | z | ----- | z | ----- | z | ----- | z | 67.31 | i |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 6.31 | 13.59 | 25.88 | 42.33 | 55.10 | 64.23 | 69.76 | 68.17 | 57.49 | 45.95 | 27.87 | 13.94 | 40.51 | |||||||||||||
S.D. | 6.73 | 6.83 | 5.89 | 4.62 | 3.49 | 2.83 | 2.25 | 2.97 | 3.04 | 3.46 | 4.94 | 6.86 | 1.92 | |||||||||||||
SKEW | -0.25 | 0.46 | -0.14 | -0.07 | 0.09 | -0.25 | 0.11 | -0.06 | -0.74 | 0.32 | -0.54 | -0.10 | -1.10 | |||||||||||||
MAX | 18.48 | 30.86 | 36.41 | 51.44 | 64.40 | 69.25 | 74.53 | 74.36 | 62.85 | 55.70 | 35.45 | 26.63 | 43.15 | |||||||||||||
MIN | -11.92 | -0.90 | 13.17 | 31.23 | 47.56 | 57.50 | 65.89 | 61.78 | 47.05 | 40.02 | 16.09 | -0.13 | 34.81 | |||||||||||||
YRS | 45 | 46 | 49 | 52 | 55 | 53 | 50 | 48 | 51 | 46 | 47 | 45 | 22 |