YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1933 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 39.56 | d | 34.55 | c | 37.06 | j |
1934 | 30.54 | d | 37.21 | d | 46.02 | b | 50.18 | b | 60.71 | 62.67 | 72.16 | 67.89 | 60.78 | 51.96 | d | 39.29 | a | 34.02 | a | 51.12 | ||||||
1935 | 32.26 | 32.41 | 37.95 | a | 44.48 | d | 50.09 | b | 64.97 | 68.79 | 67.34 | l | 57.04 | q | 51.24 | d | 38.47 | 31.85 | 45.25 | b | ||||||
1936 | 30.98 | b | 33.74 | b | 39.60 | 48.87 | 57.05 | b | 66.52 | 69.23 | a | 66.77 | 57.55 | 48.73 | c | 38.37 | 31.61 | 49.09 | ||||||||
1937 | ----- | z | ----- | z | ----- | z | 45.25 | 54.55 | 62.92 | 69.94 | 67.50 | 62.30 | b | 50.02 | 38.46 | d | ----- | z | 56.37 | d | ||||||
1938 | 28.05 | c | 31.66 | c | ----- | z | ----- | z | 50.97 | o | 57.23 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 38.98 | i | |
1939 | 28.85 | 23.25 | b | 39.95 | 50.16 | a | 56.79 | 65.03 | 72.40 | 68.34 | ----- | z | ----- | z | ----- | z | ----- | z | 50.60 | d | ||||||
1940 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 60.06 | d | 52.67 | a | 36.68 | b | 38.26 | 46.92 | h | |
1941 | 34.05 | 40.11 | 37.61 | 41.08 | 54.97 | 59.29 | a | 62.92 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 47.15 | e | ||||||
1942 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1943 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1944 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1945 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1963 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1964 | ----- | z | ----- | z | ----- | z | ----- | z | 52.82 | c | 61.50 | 68.93 | a | 66.59 | b | 60.02 | 52.79 | 38.30 | 27.55 | 53.56 | d | |||||
1965 | 32.44 | 30.12 | 29.98 | a | 39.85 | 51.20 | a | 59.34 | b | 67.50 | 65.35 | d | 57.34 | a | 50.50 | e | 40.98 | c | 29.78 | d | 46.20 | |||||
1966 | 21.54 | d | 21.25 | d | 38.34 | b | 44.94 | d | 61.72 | d | 63.28 | c | 73.43 | c | 68.31 | 61.33 | i | ----- | z | ----- | z | 31.96 | g | 49.10 | d | |
1967 | 24.87 | d | 33.52 | d | 42.35 | e | 43.94 | c | 51.70 | d | 66.98 | d | 72.45 | a | 66.98 | c | 60.20 | b | 51.06 | f | 40.09 | b | 24.00 | a | 47.92 | a |
1968 | 23.91 | d | 33.41 | b | 37.85 | d | 44.04 | d | 54.29 | e | 59.25 | p | 70.67 | b | 62.85 | d | 58.07 | b | 52.79 | j | ----- | z | ----- | z | 48.14 | d |
1969 | ----- | z | ----- | z | ----- | z | ----- | z | 62.40 | u | 61.83 | 69.69 | 69.41 | c | 62.48 | 48.64 | b | 36.95 | 34.92 | 54.85 | e | |||||
1970 | 28.00 | a | 36.38 | 36.08 | 39.68 | 54.27 | 62.35 | 69.79 | 68.95 | 58.37 | 43.66 | 38.07 | 31.69 | 47.27 | ||||||||||||
1971 | 26.55 | 31.93 | 39.68 | 43.57 | 50.11 | 63.87 | 71.19 | 66.34 | 59.00 | a | 46.48 | 38.80 | 28.32 | 47.15 | ||||||||||||
1972 | 32.34 | 35.93 | 43.90 | 45.50 | 52.89 | 62.60 | 70.53 | 66.02 | d | 60.38 | 50.60 | 32.73 | h | 28.02 | d | 49.88 | a | |||||||||
1973 | 24.57 | a | 29.84 | 34.54 | d | 41.27 | f | 53.21 | e | 61.22 | c | 67.81 | g | 66.39 | 58.93 | 49.71 | 38.72 | 31.37 | 44.85 | b | ||||||
1974 | 29.37 | 29.89 | 42.60 | b | 44.57 | c | 55.56 | 68.20 | 68.05 | 64.52 | 59.38 | 50.53 | 37.42 | 25.69 | 47.98 | |||||||||||
1975 | 27.66 | 29.79 | 36.92 | 40.87 | 51.23 | 61.47 | a | 67.95 | 65.95 | 58.20 | 49.29 | 36.07 | 28.75 | a | 46.18 | |||||||||||
1976 | 28.32 | 37.91 | 36.37 | 45.72 | 54.82 | 63.37 | 68.15 | 65.26 | 59.73 | 45.73 | 35.88 | 29.35 | 47.55 | |||||||||||||
1977 | 26.16 | b | 33.59 | 35.94 | 46.72 | 53.24 | 64.93 | 68.76 | 68.24 | 61.65 | 52.10 | 39.13 | 35.52 | 48.83 | ||||||||||||
1978 | 32.05 | 32.38 | 42.39 | 47.40 | a | 54.05 | 65.13 | 69.74 | 65.35 | 59.68 | 52.32 | 39.63 | 27.71 | c | 48.99 | |||||||||||
1979 | 25.18 | 30.75 | 37.65 | 46.25 | 52.73 | 62.45 | 68.16 | 64.98 | 62.91 | a | 51.81 | 34.58 | 31.37 | 47.40 | ||||||||||||
1980 | 33.69 | 35.62 | 36.79 | 44.48 | 50.58 | 64.63 | 70.15 | 66.48 | 60.62 | 47.37 | 37.05 | a | 37.29 | 48.73 | ||||||||||||
1981 | 34.74 | 35.43 | 36.71 | 49.48 | a | 54.44 | 67.02 | 68.45 | 67.18 | 61.10 | 49.11 | 40.93 | 34.39 | 49.91 | ||||||||||||
1982 | 28.68 | a | 33.48 | 39.37 | a | 45.93 | 52.19 | 61.36 | a | 67.23 | 66.35 | 60.33 | a | 46.24 | 37.65 | 29.87 | 47.39 | |||||||||
1983 | 30.95 | 34.73 | 38.90 | 40.58 | 52.86 | b | 60.50 | a | 68.31 | 66.48 | 63.20 | 51.06 | 38.53 | 35.11 | 48.44 | |||||||||||
1984 | 30.79 | 31.98 | 38.57 | a | 43.82 | 59.05 | a | 63.80 | 68.94 | 65.71 | 60.93 | 44.19 | 37.65 | 33.26 | 48.22 | |||||||||||
1985 | 28.66 | 28.77 | 39.89 | 47.90 | 54.74 | 64.83 | 69.13 | 65.95 | 56.84 | a | 49.19 | 37.17 | 30.66 | 47.81 | ||||||||||||
1986 | 38.39 | 36.14 | 41.60 | 47.95 | 54.87 | 63.63 | 66.84 | 68.56 | 57.42 | 47.50 | 39.12 | 31.87 | 49.49 | |||||||||||||
1987 | 29.47 | 32.84 | 35.56 | 48.05 | 53.66 | 64.38 | 66.02 | 64.65 | 58.80 | 52.48 | 37.28 | 29.77 | 47.75 | |||||||||||||
1988 | 27.97 | 37.14 | 38.50 | 46.47 | 55.29 | 64.73 | 68.89 | 66.03 | 57.75 | 54.03 | 38.65 | 31.03 | 48.87 | |||||||||||||
1989 | 28.74 | 38.21 | 44.00 | 52.35 | 57.66 | 64.45 | 70.48 | 66.44 | 61.45 | 49.29 | 37.85 | 30.02 | 50.08 | |||||||||||||
1990 | 29.10 | 32.66 | 41.84 | 48.53 | 54.21 | 67.08 | 67.40 | 65.11 | 61.77 | 49.69 | 38.63 | 25.29 | 48.44 | |||||||||||||
1991 | 30.24 | 37.80 | 37.06 | 44.73 | 53.50 | 60.68 | 67.87 | 66.68 | 60.93 | 49.98 | 38.05 | 32.15 | 48.31 | |||||||||||||
1992 | 25.81 | 35.90 | 40.87 | 50.73 | 55.24 | 61.92 | 66.74 | 65.56 | 61.50 | 52.40 | 32.20 | 29.37 | 48.19 | |||||||||||||
1993 | 34.98 | 35.61 | 40.31 | 47.65 | 56.05 | 63.15 | 67.77 | a | 66.34 | 59.22 | 48.39 | 35.78 | 30.48 | 48.81 | ||||||||||||
1994 | 29.84 | 33.13 | a | 41.53 | 46.80 | 54.44 | 67.20 | 69.74 | 69.77 | 60.58 | 47.55 | 37.18 | 34.34 | 49.34 | ||||||||||||
1995 | 30.65 | a | 40.07 | 41.35 | 43.70 | 51.81 | 61.33 | 68.66 | 70.65 | 61.82 | 49.94 | 42.43 | 33.34 | 49.65 | ||||||||||||
1996 | 33.05 | a | 39.84 | 39.97 | a | 49.25 | 59.44 | 66.37 | 71.35 | a | 68.42 | a | 58.37 | 49.94 | 40.33 | 33.63 | 50.83 | |||||||||
1997 | 30.10 | 35.07 | 42.79 | 45.70 | 57.58 | 62.63 | 67.66 | 67.47 | 64.33 | a | 48.27 | a | 39.16 | b | 27.11 | 48.99 | ||||||||||
1998 | 33.19 | 31.50 | 38.94 | 43.32 | 54.94 | 62.70 | 69.81 | 68.27 | 65.45 | 52.11 | 41.25 | 33.56 | 49.59 | |||||||||||||
1999 | 33.73 | 37.77 | 44.56 | 46.87 | 55.39 | 63.87 | 68.58 | 66.95 | 61.47 | 51.50 | 43.75 | 30.42 | 50.40 | |||||||||||||
2000 | 34.21 | 40.12 | 41.06 | 50.62 | 59.39 | 66.28 | 70.42 | 68.50 | 63.68 | 49.82 | 33.23 | 33.52 | 50.90 | |||||||||||||
2001 | 29.40 | 35.02 | 41.05 | 48.37 | 57.84 | 65.02 | 69.98 | a | 67.37 | 62.70 | 52.98 | 40.85 | 30.05 | 50.05 | ||||||||||||
2002 | 31.06 | 34.70 | 38.11 | 51.82 | 55.94 | 66.95 | 70.05 | 67.55 | 61.38 | 49.69 | 39.82 | 29.88 | c | 49.75 | ||||||||||||
2003 | 37.27 | 35.11 | 38.84 | 46.08 | 57.98 | 64.59 | a | 73.05 | a | 69.23 | 62.28 | 55.11 | 39.37 | 33.45 | 51.03 | |||||||||||
2004 | 32.17 | a | 31.96 | b | 45.95 | 45.66 | a | 56.48 | 63.86 | a | 67.60 | f | 65.98 | a | 60.76 | a | 49.60 | 38.77 | 32.65 | 47.62 | a | |||||
2005 | 36.84 | 37.32 | 39.52 | 48.28 | 57.32 | 63.47 | 70.71 | 66.60 | a | 63.28 | 52.40 | 41.42 | 33.31 | 50.87 | ||||||||||||
2006 | 33.85 | a | 35.96 | 38.35 | a | 50.19 | a | 59.27 | 68.47 | 71.02 | 65.58 | 57.35 | 49.63 | 40.62 | 25.16 | 49.62 | ||||||||||
2007 | 24.40 | 33.61 | 41.79 | 47.65 | 55.58 | 65.18 | 69.47 | 68.65 | 62.93 | ----- | z | ----- | z | ----- | z | 52.14 | c | |||||||||
2008 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 69.31 | d | 68.64 | c | 62.38 | v | ----- | z | ----- | z | ----- | z | 68.98 | j |
2009 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2010 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 30.20 | 34.01 | 39.56 | 46.30 | 55.02 | 63.74 | 69.27 | 66.92 | 60.54 | 49.96 | 38.48 | 31.20 | 48.90 | |||||||||||||
S.D. | 3.67 | 3.83 | 3.05 | 3.07 | 2.73 | 2.39 | 1.90 | 1.55 | 2.04 | 2.44 | 2.18 | 3.17 | 1.31 | |||||||||||||
SKEW | -0.03 | -0.99 | -0.25 | -0.24 | 0.34 | -0.24 | -0.36 | 0.08 | 0.12 | -0.47 | -0.43 | -0.18 | -0.12 | |||||||||||||
MAX | 38.39 | 40.12 | 46.02 | 52.35 | 61.72 | 68.47 | 73.43 | 70.65 | 65.45 | 55.11 | 43.75 | 38.26 | 51.12 | |||||||||||||
MIN | 21.54 | 21.25 | 29.98 | 39.68 | 50.09 | 57.23 | 62.92 | 62.85 | 56.84 | 43.66 | 32.20 | 24.00 | 46.18 | |||||||||||||
YRS | 48 | 48 | 47 | 47 | 49 | 50 | 49 | 49 | 47 | 45 | 46 | 46 | 37 |