YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 80.16 | 78.52 | 68.13 | 64.81 | 34.14 | a | 27.35 | 58.85 | f | |||||
1948 | 20.46 | c | 23.14 | a | 36.15 | d | 52.24 | e | 63.03 | 71.67 | 76.81 | 79.13 | 75.30 | 59.16 | 41.14 | a | 29.03 | 52.27 | ||||||||
1949 | 26.63 | a | 22.96 | c | 33.79 | b | 55.73 | 62.17 | a | 74.30 | 77.94 | 77.84 | 64.67 | 57.52 | 40.73 | 27.04 | d | 51.78 | ||||||||
1950 | 18.66 | b | 25.50 | 31.17 | b | 40.03 | 58.83 | a | 73.97 | 73.29 | 70.40 | a | 67.73 | 57.13 | a | ----- | z | ----- | z | 51.67 | b | |||||
1951 | ----- | z | ----- | z | ----- | z | ----- | z | 65.83 | a | 67.27 | 80.11 | l | 69.90 | 62.93 | 52.55 | 33.80 | e | 24.42 | 53.81 | e | |||||
1952 | 23.80 | a | 32.52 | 35.29 | 58.23 | 64.43 | a | 72.87 | 78.87 | 75.42 | 69.00 | a | 54.65 | 42.03 | 31.71 | 53.23 | ||||||||||
1953 | 25.81 | 25.26 | a | 38.11 | c | 46.10 | a | 61.61 | 69.41 | a | 76.55 | 78.27 | a | 67.00 | 63.39 | 45.70 | 29.65 | 52.24 | ||||||||
1954 | 18.97 | 36.82 | 34.42 | 49.77 | 55.03 | 73.80 | 77.84 | 76.97 | 64.73 | 52.71 | 42.90 | 30.61 | 51.21 | |||||||||||||
1955 | 23.23 | 25.50 | 31.55 | 57.77 | 64.42 | 74.03 | 81.16 | 80.45 | 67.73 | 56.77 | 34.63 | 22.87 | 51.68 | |||||||||||||
1956 | 26.94 | 26.38 | 34.33 | a | 45.67 | 60.19 | 70.40 | 71.32 | 74.39 | 64.63 | 64.68 | 39.67 | 29.81 | 50.70 | ||||||||||||
1957 | 16.48 | 26.25 | 34.90 | 52.17 | 63.10 | 68.27 | 77.90 | 77.65 | 66.73 | 56.65 | 38.77 | 30.97 | 50.82 | |||||||||||||
1958 | ----- | z | ----- | z | 40.00 | l | 54.43 | 65.03 | 69.03 | 74.71 | 77.03 | 68.90 | 57.71 | 42.20 | 14.44 | o | 63.63 | d | ||||||||
1959 | 17.00 | a | 24.93 | 39.13 | 52.23 | 64.45 | 74.07 | ----- | z | ----- | z | 68.97 | 50.74 | 31.93 | 34.87 | 45.83 | b | |||||||||
1960 | 24.13 | 27.55 | 31.35 | 44.83 | r | 59.03 | 70.53 | 78.94 | 77.77 | ----- | z | 57.52 | b | 42.40 | 31.29 | q | 52.14 | c | ||||||||
1961 | 22.36 | c | 33.18 | 40.84 | 47.37 | 64.26 | 72.45 | h | ----- | z | 82.63 | d | 70.46 | d | 59.39 | 41.27 | 26.39 | 48.81 | b | |||||||
1962 | 19.00 | 22.21 | 35.42 | 47.70 | 61.77 | 67.50 | 74.86 | b | 76.97 | 66.53 | 58.47 | a | 43.80 | 28.52 | 50.23 | |||||||||||
1963 | 13.94 | 21.21 | 39.55 | 54.23 | 63.77 | a | 73.41 | a | 81.42 | 76.65 | 70.13 | 68.58 | 46.20 | 21.39 | 52.54 | |||||||||||
1964 | 29.81 | 30.52 | 35.55 | 49.77 | 67.35 | 71.10 | a | 81.03 | ----- | z | 65.71 | b | 56.52 | 41.23 | 23.60 | a | 50.20 | a | ||||||||
1965 | 21.42 | 20.04 | c | 29.48 | 48.93 | 65.10 | a | 72.33 | 76.32 | 78.39 | 62.10 | 59.35 | 40.07 | 32.52 | 50.50 | |||||||||||
1966 | 19.13 | a | 28.14 | 41.40 | a | 46.40 | 63.23 | 77.62 | a | 83.42 | 76.48 | 69.50 | 57.87 | 37.87 | 27.55 | 52.38 | ||||||||||
1967 | 26.65 | 21.44 | a | 41.74 | 53.03 | 59.48 | 73.07 | a | 79.00 | 78.58 | 70.87 | 56.35 | 39.10 | 30.19 | 52.46 | |||||||||||
1968 | 25.23 | a | 26.17 | 47.81 | 55.27 | 60.81 | 70.93 | 81.20 | a | 77.61 | 70.43 | 60.45 | 40.33 | 25.97 | 53.52 | |||||||||||
1969 | 22.42 | 29.07 | 37.16 | 52.43 | 67.03 | 69.24 | a | 80.19 | 84.81 | 70.50 | 53.97 | 39.97 | 29.84 | 53.05 | ||||||||||||
1970 | 18.26 | 28.50 | 37.71 | 49.93 | 57.19 | 77.20 | 85.87 | 83.39 | 70.41 | a | 58.48 | 37.73 | 26.00 | 52.56 | ||||||||||||
1971 | 17.03 | 27.29 | 35.94 | 51.80 | 64.58 | 75.20 | 78.40 | a | 80.77 | 72.28 | a | ----- | z | ----- | z | ----- | z | 55.92 | c | |||||||
1972 | 20.03 | a | 22.69 | 31.88 | e | 42.50 | 66.54 | c | 76.34 | a | 73.90 | 73.90 | 66.00 | 53.35 | 34.90 | a | 21.35 | 48.62 | ||||||||
1973 | 26.39 | 26.61 | 35.48 | 46.28 | a | 59.84 | 74.00 | 81.26 | 79.00 | a | 66.40 | 62.13 | 39.87 | 23.25 | g | 54.30 | a | |||||||||
1974 | 19.03 | 29.39 | 30.59 | b | 46.13 | 58.68 | 75.07 | 82.55 | ----- | z | ----- | z | 50.20 | a | 36.23 | ----- | z | 47.54 | c | |||||||
1975 | 22.06 | 23.89 | a | 31.40 | a | 38.31 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 28.92 | h | |
1976 | ----- | z | ----- | z | ----- | z | 55.10 | t | 67.07 | a | ----- | z | ----- | z | ----- | z | 67.50 | p | 51.86 | b | 34.43 | 17.63 | a | 42.75 | h | |
1977 | 11.83 | b | 29.82 | 43.80 | a | 56.14 | b | 71.26 | 73.36 | e | 80.65 | 72.94 | 64.21 | a | 57.26 | 40.63 | 24.23 | 52.18 | ||||||||
1978 | 19.45 | 24.07 | 39.48 | 51.04 | d | 66.41 | b | 75.36 | b | 76.11 | d | 76.29 | c | 68.52 | e | 58.00 | b | 38.93 | a | ----- | z | 53.97 | a | |||
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 38.60 | o | 32.39 | 32.39 | k | |
1980 | 23.16 | 24.45 | 34.18 | c | 56.28 | a | 68.77 | a | 76.23 | 82.07 | b | 76.07 | c | 64.97 | 51.03 | b | 40.60 | 23.61 | 51.78 | |||||||
1981 | 25.71 | 28.54 | 41.48 | b | 52.63 | 66.39 | 72.48 | a | 79.23 | 76.58 | 66.63 | 53.23 | a | 46.03 | ----- | z | 55.36 | a | ||||||||
1982 | 11.17 | b | 23.33 | d | 34.41 | b | 47.43 | b | 64.26 | 67.00 | c | 74.57 | a | 70.73 | a | 65.15 | d | 53.74 | 33.85 | c | 26.37 | a | 47.67 | |||
1983 | 25.17 | a | 31.50 | b | 36.47 | a | 47.03 | a | 61.77 | 73.17 | a | 82.86 | b | 82.23 | 69.32 | b | 54.97 | 37.56 | c | 15.37 | a | 51.45 | ||||
1984 | 21.59 | b | 34.22 | b | 32.42 | 54.18 | b | 63.83 | b | 73.85 | c | 80.66 | b | 79.81 | 64.14 | a | 57.48 | 39.04 | b | 26.35 | 52.30 | |||||
1985 | 19.17 | b | 25.12 | b | 41.45 | b | 55.50 | b | 69.40 | a | 68.63 | k | 79.00 | h | 73.07 | b | 65.00 | a | 55.50 | a | 30.93 | a | ----- | z | 48.35 | c |
1986 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1987 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1988 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1989 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1990 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1991 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1992 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 73.76 | b | 66.73 | d | 52.65 | 34.53 | 25.83 | a | 50.70 | g | ||
1993 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 73.13 | 76.23 | 60.10 | 50.32 | 34.83 | 29.22 | d | 53.97 | f | |||||
1994 | 11.17 | a | 17.61 | 37.48 | 50.37 | 61.68 | 71.40 | 72.03 | 71.61 | 67.30 | 57.32 | 43.38 | a | 30.71 | 49.34 | |||||||||||
1995 | 23.27 | a | 24.22 | a | 35.77 | 42.97 | 60.65 | 68.07 | 74.52 | 75.94 | 64.63 | 53.10 | ----- | z | ----- | z | 52.31 | b | ||||||||
1996 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 70.24 | a | 56.07 | a | 32.00 | 23.63 | a | 45.49 | h | |
1997 | 18.84 | 27.61 | 34.07 | b | 43.83 | 56.03 | a | 70.53 | 79.93 | b | 79.19 | 68.20 | 50.41 | b | 36.00 | a | 26.00 | a | 49.22 | |||||||
1998 | 21.32 | 36.36 | 29.42 | 51.47 | 63.81 | 65.67 | ----- | z | ----- | z | 70.29 | i | 57.45 | 41.93 | 30.65 | 44.23 | c | |||||||||
1999 | 19.77 | 33.86 | 41.10 | 52.50 | 64.47 | a | 71.17 | 80.35 | 74.63 | d | 67.86 | b | 53.16 | 47.33 | 31.10 | 53.11 | ||||||||||
2000 | 23.35 | 32.45 | 44.45 | 48.50 | 63.74 | d | 68.41 | h | 74.39 | 76.61 | 66.87 | 57.87 | 39.20 | 17.33 | a | 49.52 | a | |||||||||
2001 | 27.84 | f | 22.36 | 34.83 | h | 49.23 | 65.62 | b | 71.97 | a | 77.38 | b | 82.36 | c | 67.41 | a | 54.94 | 50.23 | 32.58 | 57.41 | b | |||||
2002 | 26.38 | g | 32.75 | 29.26 | 46.59 | a | 57.13 | 70.41 | a | 80.19 | 76.21 | l | 68.83 | 46.42 | 36.50 | 29.81 | 49.79 | b | ||||||||
2003 | 19.48 | 20.36 | 31.81 | 47.97 | 59.55 | 67.23 | 77.61 | 79.00 | 69.13 | 53.97 | 36.97 | 30.61 | 49.47 | |||||||||||||
2004 | 16.33 | a | 27.86 | 38.06 | 48.63 | 56.94 | 67.27 | 73.13 | 69.94 | 70.00 | 55.35 | 43.59 | a | 26.29 | 49.45 | |||||||||||
2005 | 17.18 | i | 30.57 | 34.74 | 50.73 | 57.00 | 70.20 | 76.87 | 76.00 | 71.03 | 55.77 | 40.63 | 25.45 | 53.55 | a | |||||||||||
2006 | 32.90 | 24.79 | 38.29 | 53.93 | 58.19 | 72.87 | 83.16 | ----- | z | 65.83 | ----- | z | ----- | z | 31.97 | 51.33 | c | |||||||||
2007 | 25.39 | 18.36 | 42.10 | a | 48.87 | 63.48 | 72.63 | 78.55 | 77.86 | b | 69.93 | a | 57.70 | a | 38.40 | 23.42 | 51.39 | |||||||||
2008 | 21.74 | 21.72 | 33.23 | 47.83 | a | 58.39 | 70.57 | 75.42 | 76.52 | 68.43 | 55.43 | a | 40.00 | d | 23.56 | v | 51.75 | a | ||||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 21.24 | 26.65 | 36.29 | 49.96 | 62.65 | 71.83 | 78.21 | 76.96 | 67.57 | 56.19 | 39.32 | 27.10 | 51.33 | |||||||||||||
S.D. | 4.61 | 4.59 | 4.32 | 4.44 | 3.71 | 2.93 | 3.38 | 3.45 | 2.79 | 4.06 | 4.18 | 4.33 | 1.52 | |||||||||||||
SKEW | -0.11 | 0.29 | 0.44 | -0.37 | -0.06 | -0.14 | -0.09 | -0.10 | -0.09 | 0.52 | 0.18 | -0.72 | -0.68 | |||||||||||||
MAX | 32.90 | 36.82 | 47.81 | 58.23 | 71.26 | 77.62 | 85.87 | 84.81 | 75.30 | 68.58 | 50.23 | 34.87 | 53.52 | |||||||||||||
MIN | 11.17 | 17.61 | 29.26 | 38.31 | 55.03 | 65.67 | 71.32 | 69.90 | 60.10 | 46.42 | 30.93 | 15.37 | 47.67 | |||||||||||||
YRS | 45 | 48 | 47 | 48 | 50 | 46 | 46 | 46 | 50 | 52 | 50 | 44 | 28 |