YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 76.61 | 74.24 | 68.12 | 52.37 | 32.93 | 26.68 | 55.16 | f | ||||||
1949 | 16.18 | 20.93 | 44.32 | 56.05 | 62.11 | 68.57 | 78.10 | 74.87 | 67.30 | 50.65 | 40.82 | 27.84 | 50.64 | |||||||||||||
1950 | 23.67 | a | 34.38 | 41.21 | b | 52.53 | 59.17 | a | 68.93 | 75.90 | 71.95 | a | 62.83 | f | 55.97 | 38.60 | 31.71 | 50.36 | a | |||||||
1951 | 24.76 | 30.11 | 41.34 | 52.69 | a | 61.74 | 68.10 | 79.21 | 74.32 | 64.45 | 50.73 | 34.98 | 25.27 | a | 50.64 | |||||||||||
1952 | 20.79 | 32.81 | 38.29 | 53.67 | 62.77 | 69.90 | 77.06 | 77.37 | 67.05 | 53.97 | 35.13 | 27.23 | 51.34 | |||||||||||||
1953 | 26.69 | 33.39 | 42.69 | 50.12 | 56.11 | 71.25 | 79.00 | 73.13 | 66.62 | 53.00 | 40.22 | 23.08 | 51.28 | |||||||||||||
1954 | 28.58 | 38.86 | 40.76 | 56.97 | 64.79 | 69.85 | 80.56 | 73.85 | 67.92 | 53.05 | c | 40.83 | 26.33 | b | 53.53 | |||||||||||
1955 | 12.39 | 17.10 | m | 38.11 | 49.42 | 60.48 | 67.97 | 75.92 | 77.53 | 65.72 | a | 53.45 | 33.92 | 31.66 | 51.51 | a | ||||||||||
1956 | 32.84 | 31.07 | 41.37 | 52.40 | 63.27 | 72.03 | 75.47 | 70.89 | 67.20 | 52.82 | 31.92 | 24.26 | 51.29 | |||||||||||||
1957 | 26.81 | 35.23 | 45.23 | 50.70 | 59.08 | 69.97 | 76.66 | 74.60 | 64.33 | 53.56 | 36.62 | 30.45 | 51.94 | |||||||||||||
1958 | 27.50 | 39.61 | 41.39 | 50.75 | 65.27 | 72.17 | 75.08 | 79.03 | 67.63 | 54.26 | 38.25 | 30.79 | 53.48 | |||||||||||||
1959 | 27.90 | 35.34 | 42.39 | 53.25 | 62.56 | 74.00 | 77.95 | 74.81 | 64.08 | ----- | z | 36.50 | 30.89 | 52.70 | a | |||||||||||
1960 | 20.95 | 31.91 | 44.15 | 52.62 | 61.27 | 73.08 | 78.58 | 74.39 | 68.15 | 53.21 | 39.65 | 28.34 | 52.19 | |||||||||||||
1961 | 24.03 | 34.98 | 42.69 | 51.10 | a | 62.13 | a | 74.98 | 79.00 | 77.05 | 60.03 | 52.48 | 37.95 | 22.73 | 51.60 | |||||||||||
1962 | 21.63 | 38.27 | b | 38.77 | 55.15 | 60.00 | 69.87 | 75.42 | 73.95 | 65.70 | 55.03 | 42.25 | 27.26 | 51.94 | ||||||||||||
1963 | 14.65 | 38.95 | 40.77 | 50.90 | 65.15 | 69.13 | 78.27 | 76.24 | 68.57 | 58.61 | 41.20 | 25.71 | 52.35 | |||||||||||||
1964 | 23.89 | 29.21 | 38.39 | 50.77 | 60.39 | 68.63 | 79.92 | 74.63 | 64.38 | 54.61 | 35.50 | 27.55 | 50.66 | |||||||||||||
1965 | 33.50 | 33.77 | 39.87 | 51.20 | 58.81 | 66.97 | 76.58 | 74.18 | 60.10 | 54.39 | 44.82 | 29.13 | 51.94 | |||||||||||||
1966 | 26.19 | 31.62 | 42.77 | 52.27 | 63.97 | 71.62 | 78.55 | 75.73 | 66.67 | 52.16 | 41.12 | 28.29 | 52.58 | |||||||||||||
1967 | 21.32 | 36.02 | 46.66 | 49.30 | 59.53 | 67.80 | 78.69 | 77.52 | 68.27 | 54.55 | 40.63 | 19.48 | 51.65 | |||||||||||||
1968 | ----- | z | 38.05 | 46.19 | 48.90 | 61.37 | 71.98 | 77.47 | 71.63 | 63.33 | 53.23 | 38.33 | 20.95 | a | 53.77 | a | ||||||||||
1969 | 26.92 | 35.21 | 40.26 | 53.80 | 65.98 | 68.90 | 78.37 | 78.52 | 68.08 | 47.21 | 37.08 | 30.34 | 52.56 | |||||||||||||
1970 | 27.84 | 38.11 | 41.19 | 46.73 | 63.00 | 70.60 | 78.02 | 77.50 | 62.71 | b | 48.76 | 39.63 | 29.55 | 51.97 | ||||||||||||
1971 | 26.05 | 32.45 | 40.63 | 52.28 | 59.61 | 71.48 | 79.03 | 78.24 | 61.88 | 50.98 | 36.67 | 26.74 | 51.34 | |||||||||||||
1972 | 27.77 | 35.24 | 48.50 | 53.33 | 63.44 | 73.18 | 79.24 | 75.55 | 66.42 | 54.40 | 37.78 | c | 22.50 | 53.11 | ||||||||||||
1973 | 5.48 | c | 21.88 | 42.29 | 49.67 | 62.65 | 69.35 | 77.88 | n | ----- | z | ----- | z | ----- | z | ----- | z | 29.42 | s | 41.88 | f | |||||
1974 | 18.40 | g | 18.84 | c | 47.54 | d | 50.77 | d | 64.40 | k | ----- | z | 77.52 | b | 73.20 | h | 61.43 | o | 55.06 | f | 41.43 | h | 24.35 | n | 48.67 | h |
1975 | 16.88 | c | 31.66 | c | 41.80 | a | 45.67 | d | 56.09 | h | 65.10 | i | 77.10 | 71.39 | c | 63.70 | b | 47.65 | g | 34.29 | d | 27.81 | b | 45.59 | c | |
1976 | 23.98 | d | 37.17 | 38.65 | e | 50.43 | a | 61.61 | 68.31 | f | 81.25 | k | 74.00 | 67.56 | l | 49.97 | a | 37.87 | d | 25.75 | i | 46.71 | d | |||
1977 | 25.20 | d | 36.04 | b | 39.95 | b | 54.96 | e | 60.10 | g | 76.75 | d | 79.12 | j | 76.54 | d | 67.32 | e | 54.15 | g | 38.83 | i | 33.10 | f | 53.82 | e |
1978 | 25.02 | d | 33.33 | b | 50.36 | m | 54.04 | g | 60.33 | h | 72.59 | b | 78.20 | i | 74.12 | f | 64.04 | b | 55.11 | c | 42.11 | c | 17.46 | c | 44.24 | e |
1979 | 12.55 | b | 15.28 | h | 40.30 | a | 53.70 | e | 64.18 | l | 69.66 | b | 79.15 | 74.74 | d | 69.78 | g | 54.96 | h | 30.93 | h | 23.46 | e | 50.51 | e | |
1980 | 31.62 | b | 39.30 | a | 41.66 | b | 51.62 | b | 59.48 | e | 71.44 | c | 79.34 | 75.35 | a | 67.59 | s | 44.64 | q | 40.58 | e | 34.19 | e | 52.46 | b | |
1981 | 33.84 | b | 35.48 | b | 44.66 | c | 57.54 | f | 61.56 | f | 73.88 | q | 80.41 | b | 76.20 | c | 69.31 | i | 52.03 | b | 40.05 | b | 31.50 | e | 49.27 | d |
1982 | 21.74 | 32.12 | c | 44.67 | a | 50.88 | d | 63.03 | 71.93 | g | 78.29 | j | 76.38 | k | 64.22 | l | 48.98 | e | 37.52 | d | 31.40 | a | 41.29 | d | ||
1983 | 30.66 | c | 40.76 | e | 45.59 | c | 48.13 | d | 59.60 | a | 69.77 | d | 77.62 | c | 77.52 | g | 69.44 | e | 54.13 | d | 39.33 | l | 28.43 | a | 52.41 | b |
1984 | 11.97 | b | 27.07 | h | 44.18 | c | 50.26 | c | 69.20 | h | 70.46 | c | 80.23 | c | 76.54 | e | 70.87 | o | 46.02 | g | 38.15 | g | 29.69 | 51.90 | e | |
1985 | 21.74 | j | 27.91 | 45.70 | i | 55.85 | f | 64.65 | e | 76.04 | c | 80.08 | 76.98 | i | ----- | z | ----- | z | ----- | z | ----- | z | 62.17 | h | ||
1986 | ----- | z | ----- | z | ----- | z | 54.65 | 61.40 | b | 76.28 | 78.47 | 78.97 | 63.03 | 52.40 | a | 40.67 | 32.06 | 59.77 | c | |||||||
1987 | 27.10 | a | 36.29 | g | 41.73 | c | 56.00 | a | 65.29 | b | 74.79 | a | 76.33 | b | 74.87 | a | 66.07 | b | 55.67 | d | 40.42 | 29.02 | c | 55.21 | a | |
1988 | 12.98 | e | 25.09 | 42.78 | f | 54.92 | f | 62.74 | d | 76.40 | 80.52 | 76.57 | b | 64.69 | c | 59.28 | a | 41.80 | c | 26.95 | a | 52.70 | b | |||
1989 | 13.40 | a | 30.05 | f | 48.00 | c | 59.31 | d | 63.73 | 72.09 | a | 79.77 | 73.52 | 65.56 | d | 51.66 | b | 39.46 | b | 27.80 | a | 54.03 | a | |||
1990 | 28.66 | 36.35 | a | 47.87 | e | 58.04 | c | 62.23 | e | 74.21 | a | 79.31 | b | 75.53 | 69.46 | c | 51.65 | d | 38.09 | c | 23.22 | b | 53.72 | |||
1991 | 18.52 | 31.52 | 43.03 | b | 51.43 | a | 62.02 | b | 71.43 | 77.87 | a | 76.52 | a | 65.84 | b | 56.19 | d | 38.50 | 27.80 | a | 51.72 | |||||
1992 | 15.60 | e | 35.23 | a | 49.05 | 60.72 | 66.28 | b | 72.38 | b | 75.73 | a | 76.57 | b | 67.18 | b | 57.19 | b | 36.75 | b | 24.93 | b | 53.13 | |||
1993 | 32.22 | d | 37.86 | c | 48.19 | b | 53.85 | c | 65.14 | b | 71.63 | d | 75.79 | 75.47 | a | 65.90 | 53.05 | b | 36.24 | a | 30.68 | 53.84 | ||||
1994 | 31.63 | 35.04 | 48.74 | b | 56.63 | d | 65.63 | 78.12 | 81.38 | a | 80.67 | a | 69.42 | 53.69 | b | 38.21 | b | 33.24 | 56.03 | |||||||
1995 | 34.22 | b | 43.98 | a | 48.27 | c | 52.75 | b | 61.26 | h | 70.29 | i | 78.12 | b | 79.24 | b | 69.84 | b | 54.39 | d | 42.76 | a | 35.38 | f | 55.95 | c |
1996 | 29.91 | b | 40.02 | b | 46.36 | c | 55.21 | f | 69.02 | h | 76.47 | k | 82.42 | f | 79.47 | m | 68.14 | e | 53.30 | c | 42.36 | b | 33.45 | b | 44.79 | e |
1997 | 27.11 | c | 34.71 | g | 47.06 | f | 52.48 | d | 67.13 | h | 73.31 | d | 77.52 | i | 77.02 | h | 69.17 | c | 52.57 | c | 39.52 | c | 30.28 | a | 49.21 | e |
1998 | 34.21 | e | 38.85 | e | 39.64 | q | 52.90 | e | 63.25 | c | 68.62 | e | 82.10 | b | 78.83 | g | 71.56 | c | 53.37 | d | 41.69 | d | 27.93 | b | 53.45 | b |
1999 | 34.55 | b | 39.50 | b | 49.27 | a | 51.62 | e | 61.70 | a | 73.48 | i | 80.62 | f | 76.67 | m | 66.34 | a | 53.14 | f | 41.22 | 31.50 | g | 49.17 | e | |
2000 | 33.81 | b | 41.25 | c | 45.00 | b | 58.38 | n | 66.55 | k | 75.27 | b | 80.16 | i | 82.53 | m | 67.44 | f | 56.05 | b | 35.21 | a | 31.70 | h | 47.76 | f |
2001 | 31.52 | b | 37.80 | e | 49.18 | a | 57.02 | c | 64.66 | i | 78.29 | w | 80.39 | i | 78.66 | l | 70.79 | f | 56.07 | a | 44.24 | g | 24.94 | f | 46.32 | g |
2002 | 29.40 | a | 33.29 | 43.02 | e | 58.78 | c | 63.88 | j | ----- | z | 85.19 | o | 76.20 | p | 67.69 | l | 51.63 | e | 39.24 | c | 31.56 | 40.99 | e | ||
2003 | 34.63 | a | 37.11 | f | 47.00 | c | 54.37 | g | 65.62 | g | 74.54 | p | 84.37 | l | 79.85 | e | 66.21 | d | 59.30 | d | 41.06 | f | 32.50 | g | 57.40 | g |
2004 | 21.08 | e | 34.52 | b | 51.94 | e | 56.54 | f | 66.70 | h | 75.10 | o | ----- | z | 74.68 | n | 65.88 | f | 57.86 | f | 42.84 | b | 32.45 | k | 37.59 | h |
2005 | 39.02 | f | 41.36 | c | 46.41 | h | 53.71 | f | 65.58 | g | 73.79 | k | 83.19 | r | 77.00 | o | 66.13 | g | 55.00 | f | 39.94 | c | 26.67 | p | 40.65 | j |
2006 | 30.88 | k | 35.41 | e | 43.71 | e | 55.83 | i | 67.44 | f | 79.69 | v | 82.06 | n | 76.83 | j | 70.71 | r | 52.08 | s | 42.19 | l | 28.88 | s | 39.56 | j |
2007 | 30.12 | w | 38.00 | r | 51.38 | o | ----- | z | 67.33 | y | ----- | z | ----- | z | 79.75 | i | 74.65 | q | 54.92 | g | 41.65 | c | 29.05 | t | 41.65 | k |
2008 | 26.98 | j | 32.31 | u | 40.00 | x | ----- | z | 64.77 | p | 71.47 | o | 82.80 | u | 80.92 | r | 68.67 | r | 51.97 | n | 39.73 | s | 32.58 | r | ----- | z |
2009 | ----- | z | 39.50 | v | 48.25 | y | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 24.85 | 34.54 | 43.72 | 52.69 | 62.25 | 71.63 | 78.22 | 75.68 | 66.22 | 53.50 | 38.85 | 27.77 | 52.26 | |||||||||||||
S.D. | 7.13 | 5.14 | 3.48 | 3.16 | 2.31 | 2.76 | 1.70 | 2.27 | 2.54 | 2.52 | 2.81 | 3.73 | 1.23 | |||||||||||||
SKEW | -0.65 | -1.10 | 0.32 | 0.42 | -0.28 | 0.48 | 0.03 | 0.04 | -0.47 | 0.11 | -0.39 | -0.66 | 1.12 | |||||||||||||
MAX | 34.63 | 43.98 | 51.94 | 60.72 | 66.28 | 78.12 | 82.10 | 80.67 | 71.56 | 59.30 | 44.82 | 34.19 | 56.03 | |||||||||||||
MIN | 5.48 | 18.84 | 38.11 | 45.67 | 56.11 | 66.97 | 75.08 | 70.89 | 60.03 | 47.21 | 31.92 | 17.46 | 50.64 | |||||||||||||
YRS | 52 | 50 | 51 | 48 | 41 | 44 | 44 | 43 | 43 | 46 | 50 | 46 | 25 |