YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 68.98 | c | 65.31 | a | 50.79 | j | 30.18 | e | 25.52 | 47.50 | h | |
1949 | 11.12 | j | 25.57 | 33.66 | c | 46.93 | b | 55.68 | 63.10 | a | 71.34 | 69.30 | d | 60.47 | 47.48 | f | 44.75 | b | 28.13 | 49.89 | b | |||||
1950 | 25.18 | a | 33.91 | f | 31.79 | 41.82 | 48.31 | 61.92 | f | 66.11 | 66.98 | f | 57.25 | b | 54.76 | d | 35.65 | m | 32.53 | a | 44.72 | d | ||||
1951 | 22.65 | 32.85 | a | 30.54 | f | 38.92 | 53.82 | a | 55.40 | d | 68.60 | a | 67.02 | c | 56.06 | d | 46.35 | 36.58 | r | 23.71 | 46.54 | b | ||||
1952 | 28.66 | 30.84 | a | 28.30 | d | 45.25 | 53.87 | d | 68.76 | a | 70.16 | b | 71.02 | e | 64.13 | 50.39 | c | 31.52 | 28.16 | b | 47.59 | |||||
1953 | 35.61 | 28.18 | 40.10 | a | 37.41 | c | 45.72 | m | 68.30 | e | 73.03 | a | 71.04 | d | 64.22 | 51.72 | a | 39.28 | e | 26.36 | c | 48.66 | a | |||
1954 | 30.37 | a | 39.43 | 29.35 | a | 48.70 | b | 51.42 | k | 66.20 | 76.55 | 72.45 | b | 64.73 | 48.80 | f | 39.09 | b | 31.23 | 49.81 | b | |||||
1955 | 23.35 | 22.38 | 30.02 | 47.20 | b | 58.28 | o | 60.66 | a | 73.92 | 72.87 | d | 62.18 | 50.90 | 29.48 | 28.93 | b | 45.63 | a | |||||||
1956 | 28.69 | 25.48 | 36.20 | a | 41.50 | 56.06 | f | 71.35 | f | 71.00 | 68.68 | 65.13 | 51.95 | a | 30.79 | a | 32.97 | 45.24 | b | |||||||
1957 | 19.97 | 34.80 | f | 33.10 | 38.58 | 50.19 | e | 62.43 | 71.63 | 70.08 | e | 56.82 | b | 47.23 | 31.45 | b | 34.71 | 46.93 | a | |||||||
1958 | 29.73 | 31.65 | b | 25.84 | 40.43 | 58.42 | 62.73 | 65.15 | 69.32 | 60.85 | 50.68 | 37.23 | 30.73 | 46.90 | ||||||||||||
1959 | 27.18 | 26.36 | 33.10 | 42.30 | 52.48 | a | 67.23 | 70.40 | 71.38 | a | 57.72 | 44.33 | a | 33.33 | 34.16 | 46.66 | ||||||||||
1960 | 25.87 | 22.34 | 34.16 | 46.87 | 54.19 | 64.12 | a | 71.70 | a | 70.18 | 62.15 | 50.24 | 37.22 | 26.90 | 47.16 | |||||||||||
1961 | 30.67 | a | 34.39 | 34.77 | 41.02 | 52.13 | 64.26 | a | 69.18 | 70.26 | 53.98 | a | 47.98 | a | 33.95 | 25.16 | 46.48 | |||||||||
1962 | 20.24 | 29.02 | 32.45 | 47.83 | 56.35 | 61.32 | 67.27 | 68.90 | 60.24 | a | 51.79 | 41.65 | 32.21 | 47.44 | ||||||||||||
1963 | 18.27 | a | 34.11 | 36.03 | 45.67 | 57.28 | a | 66.03 | 72.98 | 70.10 | 65.35 | 56.13 | a | 40.37 | 26.90 | 49.10 | ||||||||||
1964 | 27.52 | 24.27 | a | 28.17 | a | 41.92 | 55.19 | 62.50 | 75.27 | 68.18 | 60.15 | 49.85 | 35.87 | 28.52 | 46.45 | |||||||||||
1965 | 32.06 | 26.00 | 22.92 | 46.78 | 52.27 | 60.92 | 69.50 | 66.95 | 50.73 | 52.53 | a | 40.92 | 31.13 | 46.06 | ||||||||||||
1966 | 24.27 | 24.96 | 38.19 | 40.20 | 56.47 | 62.00 | 74.03 | a | 66.16 | 59.17 | 46.24 | 37.43 | 26.85 | 46.33 | ||||||||||||
1967 | 30.11 | 30.71 | 38.68 | 44.38 | 48.45 | 58.05 | b | 68.43 | a | 66.55 | 59.48 | 50.42 | 34.15 | 24.02 | a | 46.12 | ||||||||||
1968 | 27.28 | a | 31.88 | a | 39.71 | c | 41.16 | b | 49.88 | b | 64.22 | c | ----- | z | 66.53 | k | 57.77 | h | 50.52 | h | 32.07 | c | 25.23 | c | 38.93 | d |
1969 | 27.54 | f | 30.52 | a | 30.52 | e | 47.55 | 54.73 | a | 57.53 | 71.60 | b | 72.46 | e | 64.18 | 35.76 | b | 37.30 | 30.50 | 48.42 | a | |||||
1970 | 27.63 | 36.38 | 28.48 | e | 38.58 | 54.89 | 62.00 | d | 71.17 | j | 72.93 | b | 57.55 | 44.66 | 36.00 | 27.35 | 44.22 | a | ||||||||
1971 | 26.93 | a | 24.46 | 31.58 | a | 41.43 | 50.80 | a | 64.83 | a | 67.87 | a | 70.35 | 55.17 | 46.52 | 37.00 | b | 28.38 | a | 45.44 | ||||||
1972 | 24.09 | d | 33.64 | a | 42.10 | b | 43.95 | 53.50 | a | 65.53 | a | 67.06 | 67.37 | 59.50 | b | 47.18 | 30.76 | c | 22.28 | a | 46.41 | |||||
1973 | 25.08 | 30.93 | a | 33.08 | a | 38.79 | b | 52.23 | 64.60 | 68.29 | 70.73 | 56.90 | 51.32 | 35.79 | a | 29.20 | a | 46.41 | ||||||||
1974 | 21.70 | a | 32.77 | 38.71 | 44.21 | b | 55.66 | 64.90 | 71.47 | 65.21 | 57.55 | 50.85 | a | 36.27 | 28.11 | 47.28 | ||||||||||
1975 | 26.02 | b | 26.85 | a | 32.81 | 40.98 | b | 51.05 | 61.12 | a | 70.71 | 69.11 | 57.77 | 51.06 | 36.03 | a | 32.53 | a | 46.34 | |||||||
1976 | 26.18 | 34.93 | 34.32 | a | 45.16 | a | 53.63 | 62.53 | 71.28 | b | 67.94 | 60.43 | 46.13 | 33.41 | a | 31.11 | 47.25 | |||||||||
1977 | 21.10 | b | 34.59 | 34.52 | c | 47.02 | b | 57.53 | 67.90 | 71.93 | a | 66.76 | 63.70 | 50.53 | 35.03 | a | 29.75 | a | 48.36 | |||||||
1978 | 21.78 | a | 22.73 | b | 38.58 | a | 44.73 | 52.48 | a | 64.22 | a | 70.50 | a | 66.90 | 62.02 | a | 50.81 | b | 32.48 | 19.06 | 45.53 | |||||
1979 | 13.45 | 29.33 | a | 36.45 | 44.80 | b | 50.89 | 62.67 | 70.11 | 66.69 | 63.97 | 50.45 | b | 28.39 | b | 31.42 | 45.72 | |||||||||
1980 | 21.23 | 28.26 | b | 33.43 | a | 44.10 | 51.87 | a | 66.93 | a | 72.65 | 68.90 | a | 62.48 | 48.50 | 36.87 | 37.16 | 47.70 | ||||||||
1981 | 32.71 | 31.62 | 38.23 | 50.67 | a | 51.70 | a | 65.63 | 70.69 | 67.58 | 63.10 | a | 47.74 | b | 41.75 | 31.77 | 49.43 | |||||||||
1982 | 24.03 | 31.04 | b | 37.47 | b | 42.59 | a | 52.84 | c | 59.67 | 70.05 | 71.19 | 59.65 | 46.37 | 30.78 | a | 29.10 | a | 46.23 | |||||||
1983 | 32.78 | a | 35.14 | 34.69 | 37.77 | 49.40 | 60.97 | a | 70.77 | a | 73.23 | 62.05 | 50.93 | a | 34.73 | 14.19 | b | 46.39 | ||||||||
1984 | 27.02 | a | 31.60 | 34.92 | 37.95 | 55.74 | b | 63.45 | a | 70.36 | b | 70.90 | 56.87 | 44.31 | 37.45 | 27.87 | a | 46.54 | ||||||||
1985 | 21.10 | a | 24.83 | a | 37.85 | 48.84 | a | 57.82 | a | 63.07 | a | 71.31 | 69.23 | 55.78 | a | 47.32 | 25.98 | 25.72 | a | 45.74 | ||||||
1986 | 35.60 | a | 29.81 | a | 43.94 | 44.57 | c | 52.90 | 66.13 | d | 69.38 | a | 68.60 | 57.43 | 46.53 | a | 35.21 | b | 29.32 | a | 48.29 | |||||
1987 | 30.48 | 33.30 | 34.03 | 49.03 | 56.57 | a | 65.32 | 71.00 | a | 66.21 | 60.10 | a | 49.17 | a | 36.62 | a | 26.57 | a | 48.20 | |||||||
1988 | 20.47 | 28.59 | 33.17 | a | 46.38 | a | 55.80 | a | 69.52 | 70.81 | 70.38 | a | 59.88 | b | 51.15 | a | 35.64 | a | 28.81 | 47.55 | ||||||
1989 | 32.04 | c | 19.50 | 36.82 | c | 46.21 | a | 56.00 | a | 62.15 | d | 71.82 | 67.90 | a | 58.70 | b | 48.71 | 39.37 | 24.57 | c | 46.98 | |||||
1990 | 32.43 | a | 30.43 | a | 34.90 | 45.67 | 51.50 | a | 66.45 | a | 67.42 | a | 68.68 | 64.30 | 49.73 | 40.18 | 22.22 | a | 47.82 | |||||||
1991 | 24.08 | a | 38.25 | 37.48 | 44.38 | 56.15 | a | 65.87 | c | 69.78 | b | 69.95 | 60.67 | 47.85 | 33.03 | a | 31.60 | 48.26 | ||||||||
1992 | 30.73 | a | 38.10 | c | 40.72 | a | 49.64 | a | 56.80 | c | 62.75 | 66.10 | e | 65.52 | c | 61.93 | a | 50.54 | d | 31.00 | 21.97 | a | 47.98 | |||
1993 | 24.43 | a | 23.81 | a | 37.34 | 44.28 | a | 55.60 | a | 60.66 | b | 67.45 | 66.38 | a | 57.15 | c | 46.98 | d | 29.08 | 29.18 | c | 45.20 | ||||
1994 | 29.86 | b | 26.23 | b | 40.42 | a | 45.89 | b | 59.40 | e | 69.00 | f | 68.35 | d | 71.34 | c | 64.00 | b | 49.13 | d | 36.18 | b | 32.41 | b | 47.57 | a |
1995 | 30.05 | a | 33.50 | 37.20 | a | 41.62 | d | 47.52 | b | 60.11 | b | 69.21 | 72.73 | a | 59.42 | 47.18 | a | 39.85 | 30.52 | a | 47.41 | |||||
1996 | 23.63 | 31.77 | a | 32.58 | 46.15 | 53.89 | 65.70 | 70.43 | c | 68.88 | a | 59.59 | b | 48.81 | 35.09 | a | 29.95 | a | 47.20 | |||||||
1997 | 25.92 | 28.79 | 40.97 | a | 38.52 | a | 54.25 | e | 64.96 | b | 70.27 | 68.74 | 62.43 | a | 49.77 | a | 33.83 | 28.67 | b | 47.26 | ||||||
1998 | 31.87 | 33.36 | 33.85 | 44.97 | 56.76 | b | ----- | z | 71.48 | 70.27 | 66.70 | 47.71 | 40.38 | 27.53 | a | 47.72 | a | |||||||||
1999 | 31.34 | 36.71 | 40.62 | a | 41.59 | a | 52.20 | d | 63.56 | e | 71.87 | d | 69.81 | 56.86 | b | 51.31 | b | 45.97 | 32.29 | b | 49.51 | |||||
2000 | 31.12 | a | 37.58 | c | 39.35 | a | 47.07 | a | 57.48 | a | 64.62 | a | 74.02 | a | 72.44 | 61.38 | a | 47.82 | a | 24.93 | a | 24.35 | 48.51 | |||
2001 | 27.60 | a | 26.38 | 36.38 | a | 46.02 | a | 54.78 | a | 66.12 | 73.95 | 71.77 | 63.57 | 49.17 | a | 40.57 | 29.63 | 48.83 | ||||||||
2002 | 28.61 | 31.55 | 31.40 | a | 47.58 | d | 53.83 | a | 69.72 | 75.08 | 69.24 | 61.40 | a | 42.50 | a | 34.42 | 33.22 | a | 48.21 | |||||||
2003 | 34.69 | 25.55 | 37.77 | c | 48.00 | b | 54.50 | b | 60.78 | a | 76.23 | a | 71.17 | h | 58.41 | b | 52.61 | 33.48 | 30.92 | 46.63 | a | |||||
2004 | 30.55 | 29.48 | 42.55 | 47.25 | 56.21 | 61.95 | a | 69.05 | 66.15 | 61.07 | 49.47 | a | 34.42 | 31.65 | 48.31 | |||||||||||
2005 | 30.29 | 33.30 | 37.63 | 44.36 | a | 54.26 | 64.03 | a | 72.79 | 67.82 | 63.38 | 49.90 | 39.87 | 27.63 | 48.77 | |||||||||||
2006 | 35.53 | 26.86 | 34.32 | 50.67 | 56.58 | a | 69.22 | 74.35 | 70.39 | 56.28 | 46.32 | 38.30 | 30.31 | 49.09 | ||||||||||||
2007 | 22.39 | 29.11 | 43.60 | 44.53 | 55.45 | a | 66.05 | b | 74.55 | 72.73 | 62.37 | 51.77 | 38.98 | 23.02 | a | 48.71 | ||||||||||
2008 | 22.58 | 29.22 | 36.06 | 43.55 | 53.23 | 63.83 | 73.72 | a | 67.26 | 58.47 | 47.88 | a | 40.56 | e | 25.37 | 46.81 | ||||||||||
2009 | 30.31 | 33.41 | 37.92 | 42.20 | 56.07 | a | 61.63 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 43.59 | f | |||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 27.07 | 30.08 | 35.42 | 44.17 | 54.03 | 63.81 | 70.90 | 69.31 | 60.34 | 48.88 | 35.66 | 28.38 | 47.30 | |||||||||||||
S.D. | 4.75 | 4.48 | 4.29 | 3.42 | 2.68 | 2.97 | 2.56 | 2.13 | 3.25 | 3.12 | 4.30 | 3.96 | 1.13 | |||||||||||||
SKEW | -0.31 | -0.07 | -0.40 | -0.23 | -0.42 | -0.24 | 0.05 | 0.03 | -0.33 | -1.19 | -0.13 | -0.84 | 0.14 | |||||||||||||
MAX | 35.61 | 39.43 | 43.94 | 50.67 | 59.40 | 69.72 | 76.55 | 73.23 | 66.70 | 56.13 | 45.97 | 37.16 | 49.51 | |||||||||||||
MIN | 13.45 | 19.50 | 22.92 | 37.41 | 47.52 | 55.40 | 65.15 | 65.21 | 50.73 | 35.76 | 24.93 | 14.19 | 45.20 | |||||||||||||
YRS | 59 | 59 | 60 | 61 | 57 | 57 | 58 | 58 | 60 | 57 | 59 | 61 | 46 |