YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 63.61 | 61.87 | 56.87 | 48.79 | 38.22 | 25.40 | b | 49.13 | f | |||||
1949 | 17.10 | 28.93 | 39.58 | 49.57 | 54.02 | 59.32 | 64.31 | 60.61 | 59.73 | 45.73 | c | 43.79 | b | 31.31 | 46.17 | |||||||||||
1950 | 25.11 | 33.64 | 38.26 | 45.92 | 52.35 | 57.08 | 67.48 | 64.52 | 59.10 | 49.11 | 41.80 | 37.05 | 47.62 | |||||||||||||
1951 | 31.85 | 35.30 | 38.83 | e | 49.87 | 52.95 | 61.88 | 64.56 | 64.66 | 60.52 | 46.65 | 39.22 | 31.26 | 48.13 | ||||||||||||
1952 | 27.56 | 33.17 | 34.63 | 48.27 | 53.39 | 56.72 | 68.97 | 62.63 | 61.07 | 54.21 | 35.70 | b | 32.16 | 47.37 | ||||||||||||
1953 | 37.48 | 37.61 | 39.10 | 44.25 | 47.39 | 54.57 | 64.97 | 62.67 | e | 61.94 | c | 48.40 | 42.60 | 35.23 | a | 48.02 | ||||||||||
1954 | 34.11 | 40.27 | 38.92 | 49.55 | 55.65 | 56.50 | 64.16 | 60.63 | 54.95 | 48.37 | 42.08 | 28.47 | a | 47.80 | ||||||||||||
1955 | 26.74 | 32.02 | 38.69 | 41.83 | 52.27 | a | 59.50 | 61.32 | 64.02 | 57.10 | 49.90 | 37.50 | 33.81 | 46.23 | ||||||||||||
1956 | 34.34 | 29.93 | 40.26 | 46.50 | 53.53 | 59.17 | 67.60 | 62.80 | a | 58.95 | i | 47.66 | 39.37 | 32.23 | 46.67 | a | ||||||||||
1957 | 24.79 | c | 36.62 | 42.27 | 45.83 | 52.66 | 61.92 | 63.65 | 59.24 | 58.33 | j | 47.52 | 36.87 | 36.03 | 46.13 | a | ||||||||||
1958 | 34.37 | 41.05 | 37.19 | 44.75 | 55.87 | 60.22 | 67.26 | 68.23 | 58.80 | 53.05 | 40.75 | 38.40 | 50.00 | |||||||||||||
1959 | 36.31 | 35.50 | 41.82 | 48.98 | 50.21 | 61.69 | a | 67.42 | 63.45 | 56.35 | 51.16 | 39.53 | 30.45 | 48.57 | ||||||||||||
1960 | 28.76 | 35.59 | 43.77 | 44.63 | 50.74 | 64.15 | 68.68 | 63.52 | 59.68 | 49.89 | 38.12 | 34.35 | 48.49 | |||||||||||||
1961 | 35.03 | 38.39 | 38.77 | 46.50 | 50.03 | 63.90 | 66.35 | 66.77 | 55.22 | 49.39 | 37.53 | 31.90 | 48.32 | |||||||||||||
1962 | 29.66 | 35.82 | 37.60 | 49.07 | 50.21 | 59.38 | 65.11 | 63.39 | 60.07 | 49.92 | 42.22 | 35.95 | 48.20 | |||||||||||||
1963 | 30.03 | 43.46 | 39.26 | 41.47 | 55.85 | 59.23 | 61.29 | 62.23 | 60.37 | 51.16 | 39.52 | 34.81 | 48.22 | |||||||||||||
1964 | 32.76 | 34.97 | 38.40 | 44.75 | 49.60 | 58.00 | 65.63 | 64.00 | 55.68 | 52.44 | 37.17 | 37.52 | 47.58 | |||||||||||||
1965 | 34.00 | 37.52 | 41.44 | 46.75 | 50.85 | 59.77 | 64.55 | 63.56 | 55.08 | 51.52 | 42.15 | 29.95 | 48.09 | |||||||||||||
1966 | 30.24 | 32.71 | 41.23 | 48.67 | 56.58 | 58.52 | 61.68 | 66.15 | 59.50 | 49.71 | 40.92 | 34.40 | 48.36 | |||||||||||||
1967 | 32.98 | 36.95 | 38.68 | 38.42 | 54.02 | 60.28 | 67.58 | 69.02 | 62.48 | 50.13 | 43.27 | 26.50 | 48.36 | |||||||||||||
1968 | 28.56 | 39.41 | 42.48 | 45.43 | 52.08 | 60.73 | 67.27 | 61.35 | 59.00 | 49.61 | 40.15 | 30.66 | 48.06 | |||||||||||||
1969 | 29.65 | 32.41 | 38.44 | 44.92 | 57.24 | 61.58 | 65.85 | 63.81 | 60.32 | 44.92 | 41.15 | 37.44 | 48.14 | |||||||||||||
1970 | 35.65 | 39.64 | 40.92 | 40.83 | 54.69 | 61.62 | 66.19 | 63.60 | 56.18 | 46.94 | 41.87 | 30.98 | 48.26 | |||||||||||||
1971 | 32.90 | 35.59 | 37.44 | 43.85 | 51.19 | 58.28 | 66.83 | a | 66.53 | 54.92 | 45.02 | 37.33 | 28.08 | 46.50 | ||||||||||||
1972 | 28.73 | 36.16 | 43.87 | 43.65 | 53.48 | 61.92 | 66.98 | 65.37 | 55.83 | 48.31 | 37.38 | 26.35 | 47.34 | |||||||||||||
1973 | 29.58 | 37.89 | 37.81 | 45.55 | b | 56.58 | 59.77 | 65.57 | b | 61.76 | 56.22 | 47.48 | 40.07 | 35.95 | 47.85 | |||||||||||
1974 | 29.55 | 34.62 | 40.40 | 42.07 | 52.05 | 59.92 | 63.26 | 63.06 | 58.92 | 49.08 | 40.23 | 33.27 | 47.20 | |||||||||||||
1975 | 33.11 | 35.64 | 39.65 | 38.18 | 51.69 | 59.73 | 63.89 | 61.79 | 60.83 | 47.40 | 37.25 | 34.82 | 47.00 | |||||||||||||
1976 | ----- | z | 37.09 | 38.19 | 41.85 | ----- | z | 55.93 | 66.53 | 59.52 | 58.72 | 49.84 | 42.77 | 31.81 | 48.22 | b | ||||||||||
1977 | 24.15 | 38.45 | 37.26 | 46.57 | 46.34 | 64.72 | 65.63 | 67.37 | 57.38 | 49.71 | 39.07 | 37.05 | 47.81 | |||||||||||||
1978 | 37.73 | 39.32 | 45.73 | 44.62 | 50.15 | 57.80 | 64.47 | 63.74 | 53.38 | 50.66 | 34.38 | 28.23 | 47.52 | |||||||||||||
1979 | 28.44 | 33.52 | 40.63 | 43.82 | 52.76 | 57.68 | ----- | z | 59.85 | 58.10 | 49.89 | 36.00 | 32.59 | h | 46.07 | b | ||||||||||
1980 | 35.31 | 40.96 | a | 39.31 | 46.85 | 51.65 | 55.10 | 64.97 | 63.19 | 57.62 | 49.29 | 38.52 | 34.29 | 48.09 | ||||||||||||
1981 | 35.58 | 36.09 | a | 39.02 | 46.33 | 52.40 | a | 60.47 | a | 63.44 | 64.52 | 58.16 | b | 44.11 | 40.68 | 35.66 | 48.04 | |||||||||
1982 | 25.59 | b | 34.09 | a | 36.70 | a | 40.95 | 52.63 | 58.34 | a | 61.92 | a | 62.81 | b | 54.75 | 45.82 | 34.31 | a | 30.28 | a | 44.85 | |||||
1983 | 30.50 | 36.77 | 39.34 | 40.72 | 52.15 | 60.03 | k | 60.87 | 64.35 | a | 58.95 | 50.28 | b | 38.20 | b | 33.98 | a | 46.01 | a | |||||||
1984 | 30.83 | b | 36.04 | a | 42.67 | d | 42.91 | c | 53.68 | 57.53 | 68.18 | 63.98 | 57.83 | 42.97 | a | 35.14 | b | 27.63 | a | 46.62 | ||||||
1985 | 29.97 | a | 33.67 | a | 35.09 | d | 47.80 | 50.52 | 62.65 | 66.10 | 59.40 | 51.80 | 44.24 | 31.33 | c | 28.76 | 45.11 | |||||||||
1986 | 35.42 | 39.17 | a | 42.68 | 43.50 | 50.11 | 60.25 | 61.44 | 64.03 | 50.98 | 45.42 | a | 35.70 | 29.60 | 46.52 | |||||||||||
1987 | 26.83 | a | 33.17 | a | 35.92 | a | 45.95 | a | 54.68 | 60.30 | 58.79 | 61.69 | 58.73 | 53.56 | d | 38.38 | d | 32.55 | b | 46.71 | ||||||
1988 | 28.88 | e | 36.96 | c | 40.29 | b | 47.87 | 49.80 | c | 59.43 | 69.47 | 65.77 | 57.78 | 53.10 | 38.86 | a | 28.28 | b | 48.04 | |||||||
1989 | 19.78 | b | 29.50 | c | 40.03 | 49.35 | 50.47 | 61.15 | 60.89 | 60.34 | 55.97 | a | 45.82 | a | 37.24 | a | 30.27 | a | 45.07 | |||||||
1990 | 31.12 | b | 28.57 | a | 41.02 | a | 49.22 | 50.10 | 56.77 | 66.48 | 64.27 | 58.22 | 47.20 | a | 34.27 | d | 22.90 | b | 45.84 | |||||||
1991 | 29.92 | a | 40.34 | c | 36.91 | b | 44.12 | b | 48.67 | b | 56.50 | 67.92 | 63.24 | 61.90 | 52.20 | a | 39.95 | a | 30.97 | b | 47.72 | |||||
1992 | 32.14 | c | 40.34 | a | ----- | z | 48.53 | 57.90 | 62.73 | 64.39 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 51.01 | f | |||
1993 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1994 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1995 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1996 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1997 | ----- | z | ----- | z | 46.52 | g | 47.58 | e | 60.27 | c | 62.23 | f | 69.37 | d | 66.09 | d | 59.67 | o | 47.26 | j | 41.35 | j | 31.30 | i | 60.83 | h |
1998 | 37.15 | h | 36.22 | e | 41.33 | h | 46.11 | g | 50.70 | h | 60.93 | h | 70.42 | g | 66.66 | l | 64.55 | h | 46.17 | g | 38.08 | f | 29.45 | k | 36.22 | k |
1999 | 34.98 | h | 35.35 | k | 39.24 | j | 48.12 | j | 53.20 | k | 60.66 | e | 65.46 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 63.06 | j |
2000 | 36.26 | 40.12 | 40.68 | q | ----- | z | ----- | z | ----- | z | ----- | z | 67.50 | c | 56.61 | c | 51.15 | 37.42 | 37.16 | c | 46.60 | e | ||||
2001 | 34.33 | d | 37.32 | n | 45.82 | c | 47.44 | d | 61.80 | a | 63.96 | b | 69.62 | c | 68.80 | a | 62.40 | a | 54.84 | f | 42.69 | d | 36.46 | f | 55.21 | c |
2002 | 33.95 | b | 39.71 | b | 41.76 | b | 50.34 | a | 53.90 | 64.20 | 71.84 | 67.12 | a | 61.88 | 47.91 | d | 40.19 | d | 36.17 | k | 52.07 | a | ||||
2003 | 39.52 | f | 36.54 | d | 43.40 | g | 41.70 | b | 55.38 | a | 66.88 | 72.34 | 65.63 | 62.52 | c | 52.50 | h | 37.26 | k | 35.83 | h | 57.28 | e | |||
2004 | 32.54 | g | 34.98 | e | 47.07 | c | 49.11 | c | 55.08 | a | 63.46 | b | 69.63 | 68.11 | h | 59.47 | a | 49.07 | d | 37.77 | f | 36.05 | c | 51.55 | c | |
2005 | 32.10 | b | 39.18 | c | 43.35 | 46.43 | a | 55.28 | b | 57.65 | d | 71.78 | b | 67.68 | a | 55.94 | d | 48.18 | a | 38.96 | b | 34.45 | c | 49.25 | ||
2006 | 35.52 | d | 35.65 | b | 34.78 | d | 44.70 | e | 57.56 | 65.66 | a | 71.27 | 65.60 | a | 59.83 | a | 47.80 | a | 39.71 | b | 32.28 | b | 49.20 | |||
2007 | 29.29 | e | 37.06 | d | 44.70 | a | 48.05 | b | 56.27 | a | 62.38 | 69.29 | 66.66 | b | 57.38 | 46.22 | f | 40.54 | c | 32.69 | g | 51.16 | b | |||
2008 | 30.15 | e | 35.43 | 40.06 | 44.38 | 55.32 | 61.23 | 69.08 | a | 68.34 | b | 57.67 | u | 50.14 | b | 42.15 | 29.95 | 47.84 | a | |||||||
2009 | 33.03 | 36.80 | 40.21 | 46.57 | 57.41 | b | 61.32 | 68.48 | a | 65.59 | c | 62.83 | 47.84 | 39.27 | d | 29.19 | 49.05 | |||||||||
2010 | 36.34 | 37.37 | a | 40.13 | 42.11 | c | 48.17 | b | 61.12 | b | 69.66 | c | 64.92 | e | 59.03 | 52.13 | a | 37.68 | 36.53 | 48.77 | ||||||
2011 | 33.33 | d | 32.36 | 39.05 | 43.97 | 48.97 | 59.22 | 66.03 | b | 66.10 | 63.03 | a | 49.84 | 37.97 | 32.28 | a | 47.68 | |||||||||
2012 | 32.78 | a | 36.38 | a | 40.37 | h | 46.68 | b | 53.94 | 58.22 | c | 66.50 | c | 69.32 | f | 63.08 | 52.12 | a | 41.83 | c | 31.98 | a | 48.35 | b | ||
2013 | 24.60 | 34.39 | 43.56 | 47.98 | 55.76 | 64.22 | c | 71.94 | d | 63.87 | h | 59.67 | a | 47.27 | a | 40.27 | b | 27.53 | a | 47.02 | a | |||||
2014 | 36.05 | c | 39.70 | a | 43.69 | 47.92 | 56.42 | f | 64.35 | c | 73.48 | 69.33 | d | 62.72 | 53.03 | 41.21 | a | 39.63 | a | 51.92 | a | |||||
2015 | 38.24 | 43.44 | b | 47.34 | 47.24 | a | 56.85 | a | 68.85 | 69.95 | b | 68.37 | d | 63.18 | m | ----- | z | ----- | z | ----- | z | 55.04 | d | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 31.21 | 36.34 | 40.21 | 45.55 | 53.16 | 60.44 | 66.38 | 64.26 | 58.45 | 49.00 | 39.10 | 32.30 | 47.62 | |||||||||||||
S.D. | 4.34 | 3.25 | 2.92 | 2.91 | 3.14 | 2.92 | 3.20 | 2.59 | 2.83 | 2.57 | 2.60 | 3.68 | 1.12 | |||||||||||||
SKEW | -0.86 | -0.23 | 0.44 | -0.50 | 0.28 | 0.42 | -0.02 | 0.03 | -0.35 | -0.15 | -0.51 | -0.21 | -0.68 | |||||||||||||
MAX | 38.24 | 43.46 | 47.34 | 50.34 | 61.80 | 68.85 | 73.48 | 69.33 | 63.08 | 54.21 | 43.79 | 39.63 | 50.00 | |||||||||||||
MIN | 17.10 | 28.57 | 34.63 | 38.18 | 46.34 | 54.57 | 58.79 | 59.24 | 50.98 | 42.97 | 31.33 | 22.90 | 44.85 | |||||||||||||
YRS | 57 | 60 | 56 | 60 | 58 | 59 | 61 | 58 | 56 | 56 | 57 | 54 | 43 |