YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1940 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1941 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | 63.55 | 59.32 | 57.73 | 48.39 | 33.72 | a | 26.45 | 48.19 | f | |||||
1949 | 23.84 | 26.88 | c | 36.90 | 47.97 | 52.16 | 61.40 | 66.32 | 58.90 | 59.13 | 45.71 | 40.50 | 33.11 | m | 47.25 | a | ||||||||||
1950 | 26.87 | 29.32 | 40.45 | t | 47.73 | 53.42 | 57.03 | 68.03 | 62.48 | 57.40 | 50.58 | 40.60 | 35.19 | 48.06 | a | |||||||||||
1951 | 27.97 | 31.79 | 36.77 | 45.70 | 52.74 | 59.93 | 67.06 | 62.29 | 58.43 | 44.55 | 33.40 | 29.62 | o | 47.33 | a | |||||||||||
1952 | 28.35 | n | ----- | z | 35.26 | d | 44.87 | 54.71 | c | 57.43 | 67.16 | 63.80 | a | 59.43 | 50.32 | 37.57 | 31.68 | 50.22 | b | |||||||
1953 | 33.58 | 32.89 | 38.70 | a | 44.77 | 49.54 | e | 57.57 | 69.40 | a | 62.10 | 58.60 | 46.68 | 39.13 | 27.90 | a | 46.74 | |||||||||
1954 | 33.06 | 37.50 | 37.58 | 48.29 | b | 55.52 | 60.87 | 68.53 | p | 61.77 | a | 55.97 | 45.23 | 40.03 | 29.06 | 45.90 | a | |||||||||
1955 | 27.90 | 27.64 | 36.81 | 39.38 | a | 50.10 | a | 57.59 | a | 63.80 | a | 66.48 | 58.00 | 47.61 | 34.79 | b | 34.79 | c | 45.41 | |||||||
1956 | 34.43 | c | 30.64 | a | 36.48 | b | 42.77 | d | 51.71 | 59.64 | b | 63.68 | 56.72 | b | 56.97 | 44.88 | e | 33.10 | 28.60 | a | 44.97 | |||||
1957 | 27.62 | b | 40.64 | 41.65 | 44.73 | 49.33 | a | 63.57 | 63.68 | 63.45 | 56.83 | 44.87 | 34.73 | 31.55 | 46.89 | |||||||||||
1958 | 33.03 | 39.14 | 38.27 | a | 44.23 | 51.81 | e | 57.29 | m | 63.84 | 67.61 | 57.79 | a | 52.33 | a | 37.00 | b | 31.32 | 46.94 | a | ||||||
1959 | 31.84 | 33.61 | 41.03 | 48.55 | a | 51.66 | b | 63.43 | 71.55 | 64.06 | 56.90 | 50.61 | 36.31 | a | 34.29 | 48.65 | ||||||||||
1960 | 30.39 | 35.00 | 41.97 | 45.30 | 52.81 | 68.97 | 69.39 | 64.23 | 58.93 | 48.13 | 37.43 | 29.97 | 48.54 | |||||||||||||
1961 | 25.19 | j | 35.59 | a | 38.32 | 47.40 | 50.10 | 65.80 | 70.71 | 66.55 | 57.57 | 48.55 | 34.17 | 29.68 | 49.49 | a | ||||||||||
1962 | 30.13 | 35.25 | 34.42 | 47.47 | 48.74 | 58.00 | 63.19 | 64.77 | 56.70 | 49.68 | 38.40 | 27.58 | 46.19 | |||||||||||||
1963 | 24.48 | 42.21 | 36.55 | 43.60 | 54.39 | 60.03 | 60.77 | 63.35 | 60.47 | 52.00 | 38.80 | 27.23 | a | 46.99 | ||||||||||||
1964 | 28.77 | 29.90 | 33.90 | 44.03 | 50.23 | ----- | z | 66.29 | 65.13 | 56.52 | a | 50.26 | 33.40 | 33.90 | 44.76 | a | ||||||||||
1965 | 32.48 | 34.18 | 38.19 | 45.13 | 50.65 | ----- | z | 62.61 | 64.90 | a | 51.70 | 47.94 | 39.33 | 28.84 | 45.09 | a | ||||||||||
1966 | 25.50 | a | 28.37 | a | 36.35 | 43.93 | ----- | z | 59.27 | 62.16 | 63.94 | 55.40 | 45.06 | 36.70 | 28.94 | 44.15 | a | |||||||||
1967 | 28.50 | a | 31.11 | 38.71 | 35.62 | a | 50.71 | 55.90 | 70.16 | 69.47 | a | 61.33 | 49.52 | 44.70 | 29.58 | 47.11 | ||||||||||
1968 | 29.58 | 39.41 | 37.61 | 42.83 | 52.39 | ----- | z | 67.94 | 60.17 | b | 57.90 | 47.37 | a | ----- | z | 25.37 | d | 46.06 | b | |||||||
1969 | 33.34 | b | 31.50 | 36.27 | a | 42.30 | c | 53.77 | 58.07 | a | 66.13 | 65.10 | 60.10 | 45.45 | 38.03 | 30.16 | 46.69 | |||||||||
1970 | 29.83 | b | 37.89 | 37.77 | 37.24 | a | 54.58 | 60.90 | a | 69.57 | a | 68.29 | 54.93 | 46.00 | 38.97 | 29.84 | 47.15 | |||||||||
1971 | 28.19 | 34.04 | 36.90 | 42.14 | a | 49.71 | 57.53 | 65.55 | 67.06 | 58.33 | 42.42 | 34.80 | 28.23 | 45.41 | ||||||||||||
1972 | 25.94 | 32.69 | 42.86 | b | 43.00 | 51.26 | 60.27 | 67.81 | 63.42 | 55.17 | 46.87 | 36.23 | 26.71 | 46.02 | ||||||||||||
1973 | 28.74 | 36.39 | 35.00 | 42.07 | b | 55.00 | e | ----- | z | ----- | z | 63.87 | 53.14 | a | 44.89 | c | 38.00 | ----- | z | 44.12 | c | |||||
1974 | 28.65 | h | 29.56 | c | 39.63 | a | 39.45 | a | 53.61 | 62.24 | a | 67.29 | 63.23 | 59.93 | 50.27 | a | 35.23 | 28.69 | b | 48.10 | a | |||||
1975 | 26.55 | 31.86 | 35.97 | 37.50 | 50.74 | 60.13 | 64.68 | 61.48 | 59.53 | 45.16 | 33.10 | 30.10 | 44.73 | |||||||||||||
1976 | 27.97 | 34.83 | 36.03 | 40.17 | 55.17 | a | 59.79 | a | 67.58 | 57.71 | 58.50 | b | 47.16 | 36.97 | 25.61 | 45.62 | ||||||||||
1977 | 29.26 | 33.41 | a | 33.71 | c | 42.60 | 44.87 | a | 62.00 | g | 64.57 | q | 64.40 | f | 53.92 | d | 46.75 | c | 36.24 | e | 36.14 | c | 39.66 | c | ||
1978 | 37.24 | b | 34.86 | 40.25 | c | ----- | z | 49.28 | b | 58.35 | j | 62.03 | 62.81 | 55.79 | a | 51.29 | 35.83 | 24.33 | a | 45.37 | b | |||||
1979 | 29.55 | 31.70 | a | 38.48 | 44.24 | a | 53.71 | c | 57.78 | c | 64.74 | 62.26 | ----- | z | 50.13 | a | 30.53 | 29.69 | b | 44.80 | a | |||||
1980 | 36.71 | 37.00 | ----- | z | 42.93 | c | 49.65 | 54.76 | a | ----- | z | ----- | z | 56.18 | b | 46.90 | 37.44 | c | 32.03 | b | 43.73 | c | ||||
1981 | 31.74 | ----- | z | 38.62 | b | 46.27 | 52.21 | b | 63.53 | 63.58 | 66.00 | 57.67 | 45.90 | 38.79 | a | 32.97 | 48.84 | a | ||||||||
1982 | 28.12 | g | 35.39 | 37.03 | a | 41.83 | 52.74 | 59.23 | 64.14 | b | 65.16 | 58.62 | a | 46.39 | 33.00 | b | 30.54 | c | 47.64 | a | ||||||
1983 | 31.29 | 36.85 | b | 38.86 | c | 37.41 | a | 50.93 | b | 57.21 | b | 61.48 | 64.67 | a | 62.21 | a | 49.00 | a | 39.66 | a | 34.31 | b | 46.99 | |||
1984 | 33.67 | d | 30.36 | d | 38.00 | e | 43.64 | b | 57.96 | c | 60.64 | b | 70.84 | 67.26 | 62.90 | a | 44.30 | a | 36.80 | 30.87 | 48.10 | |||||
1985 | 29.00 | a | 30.67 | a | 35.10 | a | 45.61 | b | 50.23 | a | 62.40 | 68.29 | 60.65 | 53.20 | 47.03 | 34.83 | 31.81 | 45.73 | ||||||||
1986 | 34.84 | 38.96 | 43.48 | 47.07 | 55.03 | 62.90 | a | 64.46 | c | 68.00 | 56.27 | 47.23 | 41.93 | 31.32 | 49.29 | |||||||||||
1987 | 29.55 | 36.36 | 38.06 | m | 44.00 | v | 53.78 | h | 61.53 | 60.71 | 65.27 | a | 58.87 | 52.10 | a | 38.48 | a | 30.48 | 48.15 | c | ||||||
1988 | 29.66 | b | 35.14 | a | 38.27 | a | 44.83 | 51.87 | a | 60.21 | b | ----- | z | 66.67 | a | ----- | z | 53.19 | 39.97 | a | 31.40 | a | 45.12 | b | ||
1989 | 27.93 | b | 32.79 | 44.13 | 52.72 | a | 55.13 | 61.87 | 66.94 | 62.70 | a | 57.30 | 46.66 | b | 37.50 | 28.76 | b | 47.87 | ||||||||
1990 | 28.84 | 33.68 | 41.07 | a | 49.60 | 56.29 | 63.03 | 69.19 | 65.55 | 60.00 | 50.73 | a | 37.77 | 22.48 | b | 48.19 | ||||||||||
1991 | 29.97 | b | 37.18 | 37.58 | 44.75 | b | 51.19 | 59.53 | 67.37 | a | 66.10 | 62.87 | 54.07 | a | 39.41 | c | 32.61 | 48.55 | ||||||||
1992 | 29.94 | 39.76 | 41.10 | 47.23 | 56.69 | b | 60.59 | a | 66.27 | a | 67.52 | b | 57.97 | a | 51.45 | 34.83 | a | 28.47 | a | 48.48 | ||||||
1993 | 32.25 | c | 36.32 | 42.72 | b | 46.77 | 53.97 | a | 59.40 | 64.03 | a | 64.39 | 56.10 | 49.57 | a | 35.97 | 28.19 | 47.47 | ||||||||
1994 | 30.81 | 33.89 | a | 44.58 | 49.97 | 52.86 | b | 63.95 | i | 68.97 | a | 66.97 | 58.73 | 47.29 | 30.17 | 31.68 | 46.90 | a | ||||||||
1995 | 36.26 | 39.89 | 43.23 | 45.90 | a | 49.63 | d | 57.03 | a | 69.23 | 66.41 | d | 60.14 | b | 48.00 | a | 42.48 | a | 33.65 | 49.32 | ||||||
1996 | 33.06 | 39.78 | b | 41.81 | 48.33 | 55.63 | d | 63.07 | a | 70.00 | h | 67.03 | a | 60.80 | 47.97 | 41.80 | 35.50 | a | 48.62 | a | ||||||
1997 | 36.39 | 34.96 | 41.03 | b | 47.53 | 58.52 | 59.48 | i | 66.73 | i | 66.07 | a | 62.43 | 48.59 | b | 39.34 | a | 31.67 | a | 46.65 | b | |||||
1998 | 32.35 | 36.07 | a | 38.61 | 41.40 | 46.45 | 56.03 | 66.17 | a | 68.06 | 59.69 | a | 46.89 | d | 37.61 | g | 31.06 | 47.53 | a | |||||||
1999 | 34.77 | 35.14 | 38.29 | 43.73 | 54.71 | 59.67 | 67.33 | a | 64.13 | 59.83 | a | 50.03 | 39.48 | a | 31.35 | 48.21 | ||||||||||
2000 | 35.20 | a | 39.10 | 42.16 | 50.48 | a | 58.35 | 65.53 | 66.07 | a | 68.03 | 59.37 | 49.42 | 32.64 | b | 30.90 | a | 49.77 | ||||||||
2001 | 31.63 | a | 33.89 | a | 43.16 | 42.80 | 60.03 | 64.77 | 66.77 | 68.23 | a | 60.33 | 52.55 | 43.07 | 31.43 | a | 49.89 | |||||||||
2002 | 29.79 | c | 32.48 | a | 37.68 | ----- | z | 53.14 | b | 65.60 | o | ----- | z | 65.43 | j | 60.35 | d | ----- | z | 41.55 | a | 33.39 | 41.20 | e | ||
2003 | 37.26 | h | 34.96 | c | 41.14 | b | 43.81 | c | 54.94 | 64.57 | b | ----- | z | 68.03 | a | 64.27 | 54.87 | 35.41 | c | 31.87 | a | 49.39 | b | |||
2004 | 30.69 | e | ----- | z | ----- | z | 49.04 | g | 55.39 | 63.77 | 66.17 | a | 65.71 | 57.30 | 46.96 | f | 38.07 | c | 30.83 | g | 53.87 | e | ||||
2005 | 35.69 | b | 37.26 | a | 40.14 | c | 40.72 | a | 53.00 | 57.70 | c | 68.17 | h | 66.90 | a | 54.93 | a | 48.97 | b | 38.41 | a | 32.28 | b | 46.00 | a | |
2006 | 33.26 | 35.12 | t | 34.43 | a | 44.93 | a | 54.09 | i | 64.38 | i | 71.00 | j | 62.69 | e | 58.80 | j | 45.80 | a | 38.54 | b | 27.90 | b | 41.08 | e | |
2007 | 26.25 | g | 35.00 | b | 41.59 | i | 47.30 | c | 54.93 | b | 61.93 | a | 68.04 | c | 66.50 | g | 55.20 | 46.09 | h | 41.09 | h | 24.89 | d | 49.61 | e | |
2008 | 29.00 | i | 35.16 | d | 39.89 | d | 45.45 | a | 54.89 | c | 64.04 | b | 68.72 | f | 68.89 | c | 60.64 | e | 48.83 | m | 43.00 | h | 31.62 | r | 52.71 | e |
2009 | 31.48 | f | 31.10 | h | 33.92 | e | 41.26 | c | 60.26 | h | 59.59 | c | 72.11 | m | 66.41 | d | 61.04 | g | 45.52 | h | 34.64 | h | 27.30 | d | 45.70 | g |
2010 | 30.96 | c | 35.73 | f | 39.50 | a | 39.97 | 50.23 | i | 61.94 | m | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 36.81 | i | |
2011 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2012 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 30.79 | 34.60 | 38.67 | 44.30 | 52.82 | 60.55 | 66.18 | 64.66 | 58.16 | 48.27 | 37.28 | 30.22 | 47.32 | |||||||||||||
S.D. | 3.18 | 3.45 | 2.81 | 3.48 | 2.94 | 2.93 | 2.74 | 2.82 | 2.56 | 2.70 | 3.06 | 2.91 | 1.47 | |||||||||||||
SKEW | 0.08 | -0.08 | 0.23 | -0.22 | -0.03 | 0.41 | -0.12 | -0.69 | -0.08 | 0.33 | -0.05 | -0.26 | -0.01 | |||||||||||||
MAX | 37.24 | 42.21 | 44.58 | 52.72 | 60.03 | 68.97 | 71.55 | 69.47 | 64.27 | 54.87 | 44.70 | 36.14 | 49.89 | |||||||||||||
MIN | 23.84 | 26.88 | 33.71 | 35.62 | 44.87 | 54.76 | 60.71 | 56.72 | 51.70 | 42.42 | 30.17 | 22.48 | 44.73 | |||||||||||||
YRS | 54 | 56 | 57 | 58 | 57 | 50 | 49 | 58 | 58 | 57 | 57 | 57 | 28 |