YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 58.35 | 57.06 | 59.50 | 56.37 | 51.97 | 44.09 | a | 38.92 | 52.32 | e | ||||||
1949 | 34.08 | 39.64 | 46.35 | 48.70 | 52.88 | b | 53.81 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 44.33 | g | ||||
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 | 54.22 | 58.32 | 59.90 | 58.55 | 55.10 | a | 48.97 | 44.87 | a | 54.28 | e | |||||
1954 | 39.23 | 44.96 | a | 41.50 | 46.25 | 51.68 | a | 53.86 | h | 56.70 | a | 57.82 | 57.83 | 53.11 | 49.67 | 43.89 | 49.33 | a | ||||||||
1955 | 41.56 | 41.09 | 40.60 | a | 43.75 | 48.98 | 54.00 | b | 56.73 | 55.24 | 55.83 | 51.98 | 42.55 | a | 40.65 | d | 47.75 | |||||||||
1956 | 41.07 | c | 38.48 | a | 42.50 | a | 47.98 | b | 52.52 | a | 54.85 | 58.41 | b | 58.75 | a | 56.80 | 50.68 | 46.38 | 43.02 | 49.29 | ||||||
1957 | 36.24 | 42.12 | 45.79 | 48.95 | 53.00 | 56.63 | 57.35 | 59.03 | 61.05 | 52.98 | a | 46.35 | 45.46 | c | 50.41 | |||||||||||
1958 | 46.88 | e | 49.11 | 45.06 | 49.20 | 55.05 | a | 59.91 | c | 60.60 | a | 59.71 | 57.90 | 54.15 | 45.48 | 47.55 | a | 52.55 | ||||||||
1959 | 43.23 | a | 43.20 | a | 45.24 | 49.20 | 51.42 | a | 56.67 | a | 58.58 | a | 57.32 | 55.38 | 52.94 | 47.37 | 43.11 | 50.31 | ||||||||
1960 | 41.16 | 42.41 | a | 45.60 | 49.13 | 51.45 | a | 53.93 | a | 55.82 | a | 58.55 | a | 56.77 | 52.90 | a | 46.45 | 43.45 | a | 49.80 | ||||||
1961 | 46.29 | 45.70 | 45.17 | a | 47.22 | 51.78 | a | 56.38 | a | 59.81 | b | 58.72 | b | 55.55 | 50.26 | b | 43.88 | 42.60 | 50.28 | |||||||
1962 | 40.21 | 44.02 | 42.82 | 49.05 | 50.35 | 53.68 | 55.90 | 58.31 | 57.98 | 53.37 | 48.73 | 44.73 | 49.93 | |||||||||||||
1963 | 37.82 | a | 50.20 | 44.26 | 48.05 | 52.62 | a | 54.48 | 59.32 | 59.10 | 60.50 | 54.34 | 47.25 | 45.10 | 51.09 | |||||||||||
1964 | 43.53 | 41.90 | 43.94 | 45.25 | 49.37 | 54.82 | 57.08 | 57.56 | 56.12 | 53.45 | 42.84 | b | 38.50 | 48.70 | ||||||||||||
1965 | 42.23 | 43.55 | 46.34 | 48.10 | 49.60 | 53.95 | 57.42 | 59.15 | 54.98 | 53.90 | a | 49.43 | 41.35 | a | 50.00 | |||||||||||
1966 | 42.66 | 43.74 | a | 44.13 | 48.50 | a | 50.65 | 54.48 | b | 57.03 | 57.18 | a | 58.10 | 51.39 | 47.37 | 45.13 | 50.03 | |||||||||
1967 | 43.81 | 43.98 | 42.53 | 44.47 | 50.79 | 56.33 | 57.70 | a | 59.42 | a | 59.82 | 53.52 | 47.77 | 40.85 | 50.08 | |||||||||||
1968 | 41.50 | 47.53 | 46.73 | 46.12 | 52.68 | 55.75 | 58.73 | a | 58.65 | a | 58.73 | 51.31 | b | 47.52 | 39.83 | a | 50.42 | |||||||||
1969 | 35.58 | a | 40.96 | 45.94 | 47.50 | a | 53.07 | b | 58.53 | 57.03 | 56.69 | 56.22 | 51.26 | 47.68 | 44.53 | a | 49.58 | |||||||||
1970 | 41.92 | 47.71 | ----- | z | 45.67 | 50.98 | a | 54.50 | a | 56.27 | a | 55.47 | o | 54.57 | h | 49.81 | m | 46.40 | d | 40.60 | a | 48.01 | d | |||
1971 | 40.41 | b | 42.74 | a | 42.84 | 47.83 | d | 51.47 | b | 53.58 | d | 56.60 | b | 59.46 | d | 55.81 | a | 50.23 | 45.27 | b | 39.22 | b | 48.79 | |||
1972 | 38.66 | b | 41.79 | 44.42 | 44.38 | 51.55 | a | 54.67 | a | 56.45 | c | 58.33 | a | 53.63 | 49.50 | ----- | z | ----- | z | 49.34 | b | |||||
1973 | ----- | z | 44.96 | c | 44.45 | 47.97 | 50.77 | a | 54.28 | 55.27 | 54.48 | 56.73 | 51.02 | ----- | z | ----- | z | 51.10 | c | |||||||
1974 | ----- | z | 42.21 | 44.53 | 48.03 | a | 50.07 | a | 53.91 | h | 56.67 | p | 57.08 | 59.53 | 50.82 | 47.27 | ----- | z | 49.94 | d | ||||||
1975 | ----- | z | 41.96 | b | 42.84 | 44.00 | 49.63 | a | 52.70 | 57.31 | 57.03 | 58.55 | 50.40 | 45.53 | m | 42.18 | a | 49.66 | b | |||||||
1976 | 42.07 | a | 42.27 | e | 41.44 | 46.17 | 49.85 | a | 52.34 | a | 56.48 | 57.25 | a | 56.82 | 51.36 | b | 45.94 | d | 44.34 | i | 49.27 | a | ||||
1977 | 41.09 | b | 45.92 | c | 42.93 | b | 47.53 | 49.85 | 54.80 | 55.82 | a | 59.83 | h | 54.60 | 50.95 | a | 43.27 | b | 42.63 | a | 48.13 | a | ||||
1978 | 43.66 | b | 45.28 | a | 46.23 | a | 48.48 | a | 50.89 | 57.70 | 58.57 | b | 58.98 | k | 56.57 | 53.22 | a | 41.95 | h | 36.82 | a | 49.74 | b | |||
1979 | 35.75 | o | 41.38 | p | 46.75 | a | 49.00 | c | 52.81 | j | 53.42 | 55.68 | a | 59.10 | b | 60.80 | 54.23 | a | 46.83 | i | 45.41 | o | 54.14 | e | ||
1980 | 40.41 | i | 44.57 | a | 44.84 | 49.55 | 50.98 | a | 54.37 | g | 58.52 | f | 54.98 | f | 55.72 | 52.62 | a | 47.54 | c | 41.83 | j | 49.40 | e | |||
1981 | 47.56 | 43.61 | 48.12 | a | 47.40 | 51.40 | ----- | z | 56.73 | ----- | z | ----- | z | 48.81 | ----- | z | ----- | z | 49.09 | e | ||||||
1982 | ----- | z | ----- | z | ----- | z | 46.25 | v | 51.21 | e | 54.84 | b | 57.17 | e | 57.98 | b | 58.92 | 54.34 | b | 44.84 | a | 42.00 | a | 52.66 | d | |
1983 | 45.21 | 48.08 | b | 48.87 | 49.86 | a | 54.70 | a | 56.50 | a | 60.28 | b | 59.59 | b | 56.72 | 49.72 | a | 48.29 | d | 37.12 | c | 51.24 | ||||
1984 | 43.87 | a | 45.39 | a | 48.40 | 47.48 | 51.22 | a | 54.53 | 56.19 | 58.27 | a | 57.25 | d | 50.02 | 46.02 | 39.31 | b | 49.83 | |||||||
1985 | 39.97 | a | 40.48 | a | 43.06 | 48.40 | d | 53.33 | h | 54.74 | c | 58.78 | a | 58.71 | 55.84 | a | 51.11 | 38.57 | a | 39.87 | 48.14 | a | ||||
1986 | 45.45 | a | 42.56 | b | 49.70 | a | 46.70 | c | 52.06 | 57.33 | 57.10 | 58.55 | 55.09 | c | 53.89 | 47.10 | a | 44.27 | 50.82 | |||||||
1987 | 42.94 | 46.20 | a | 48.60 | a | 49.32 | b | 53.07 | j | 55.62 | e | 57.79 | 58.43 | b | 57.43 | b | 54.17 | a | 49.72 | a | 40.22 | d | 50.95 | a | ||
1988 | 41.79 | 46.33 | 46.08 | 49.48 | 52.38 | a | 55.00 | 57.30 | a | 58.82 | 55.57 | a | 55.00 | d | 47.17 | a | 43.34 | b | 50.69 | |||||||
1989 | 41.29 | b | 36.95 | 44.50 | a | 51.35 | 52.90 | 57.09 | a | 58.92 | a | 58.81 | 59.45 | a | 51.64 | b | 47.65 | c | 44.44 | 50.41 | ||||||
1990 | 44.18 | 41.55 | 47.52 | 50.37 | 52.18 | 56.22 | a | 59.72 | a | 60.60 | 61.23 | b | 50.35 | 46.77 | 36.84 | 50.63 | ||||||||||
1991 | 41.06 | 48.72 | a | 43.90 | a | 47.40 | 51.37 | 54.87 | 58.73 | 58.37 | 60.33 | 51.38 | b | 47.17 | 44.74 | 50.67 | ||||||||||
1992 | 45.28 | a | 48.91 | b | 49.95 | 51.22 | 54.08 | a | 57.73 | 59.77 | 59.91 | c | 54.94 | c | 53.39 | 46.48 | 40.08 | 51.81 | ||||||||
1993 | 38.16 | 42.66 | 47.08 | a | 49.92 | 55.98 | b | 57.57 | 59.40 | 60.60 | a | 56.57 | 53.18 | a | 42.43 | 42.81 | 50.53 | |||||||||
1994 | 45.74 | 41.41 | a | 48.27 | 50.83 | 53.52 | 56.20 | 58.31 | 60.95 | 59.38 | 50.27 | a | 42.09 | b | 42.15 | 50.76 | ||||||||||
1995 | 45.89 | c | 45.46 | b | 46.83 | a | 48.48 | a | 53.06 | 55.68 | b | 60.65 | a | 57.85 | 62.17 | 52.38 | b | 49.74 | a | 44.09 | c | 51.86 | ||||
1996 | 42.18 | 44.12 | 46.79 | 50.23 | 51.06 | 55.80 | 58.77 | a | 58.05 | l | ----- | z | 47.97 | m | 45.22 | a | 40.47 | o | 49.27 | d | ||||||
1997 | 42.68 | n | 43.96 | a | 45.04 | c | 48.97 | 55.73 | a | 58.29 | a | 60.31 | 62.17 | a | 62.10 | 52.58 | 50.50 | 44.22 | d | 53.08 | a | |||||
1998 | 44.26 | b | 46.93 | a | 47.45 | b | 47.79 | a | 53.50 | 56.88 | 59.67 | a | 60.29 | 57.03 | a | 52.35 | a | 48.09 | c | 40.26 | d | 51.21 | ||||
1999 | 42.80 | a | 42.38 | g | 43.76 | j | 46.72 | e | 49.93 | a | 55.03 | 56.62 | b | 59.94 | 56.84 | a | 50.24 | b | 48.70 | 44.50 | 51.13 | b | ||||
2000 | 41.08 | a | 44.95 | 44.34 | 49.53 | 52.71 | 56.26 | a | 59.08 | 59.06 | 57.40 | 51.82 | 43.05 | 42.81 | 50.17 | |||||||||||
2001 | 43.66 | 41.95 | 46.13 | 47.03 | 51.23 | c | 54.72 | a | 56.94 | 58.95 | a | 56.88 | 50.82 | 46.50 | 42.53 | 49.78 | ||||||||||
2002 | 43.06 | 43.09 | a | 43.42 | 47.48 | a | 50.85 | a | 55.95 | h | 58.71 | l | 57.54 | c | 55.67 | a | 50.52 | 48.32 | 45.10 | 48.50 | b | |||||
2003 | 47.33 | a | 44.02 | ----- | z | 48.82 | 51.95 | a | 57.26 | a | 59.39 | 58.70 | a | 57.02 | a | 54.52 | 43.92 | 43.47 | a | 51.49 | a | |||||
2004 | 42.60 | 45.74 | ----- | z | 51.37 | 54.47 | 57.46 | b | 61.28 | a | 61.88 | a | 57.16 | a | ----- | z | ----- | z | ----- | z | 53.99 | d | ||||
2005 | ----- | z | ----- | z | 48.87 | 49.87 | 56.35 | a | 58.38 | 60.35 | 59.42 | 55.36 | a | 52.53 | b | 45.62 | 43.35 | 53.01 | b | |||||||
2006 | 46.32 | a | 43.17 | a | 44.69 | 49.52 | a | 52.77 | a | 58.08 | 58.76 | b | 57.47 | 57.16 | a | 50.34 | b | 45.73 | 43.42 | a | 50.62 | |||||
2007 | 40.63 | 45.28 | a | 46.71 | 48.33 | 52.45 | 55.48 | 61.17 | a | 60.24 | 56.38 | b | 50.40 | 45.00 | a | 40.65 | e | 50.23 | ||||||||
2008 | 39.05 | 43.28 | 43.76 | 44.53 | 51.69 | b | 53.18 | 56.10 | 58.63 | a | 56.42 | 50.13 | 48.88 | 39.16 | 48.73 | |||||||||||
2009 | 41.55 | 42.25 | 42.52 | 46.13 | 51.12 | c | 56.81 | a | 58.19 | 59.61 | 58.14 | b | 50.27 | 47.15 | 39.18 | 49.41 | ||||||||||
2010 | 46.79 | 47.20 | 47.61 | 48.48 | 50.55 | a | 55.05 | 56.35 | a | 57.65 | a | 57.20 | 53.06 | 44.77 | 43.92 | 50.72 | ||||||||||
2011 | 42.69 | 40.45 | 45.61 | 45.58 | 50.50 | 56.78 | a | 58.11 | 53.92 | y | 56.84 | b | 45.93 | p | 38.17 | u | ----- | z | 49.57 | d | ||||||
2012 | ----- | z | 36.93 | v | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 49.11 | v | 38.43 | w | ----- | z | ----- | z |
2013 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 42.30 | 43.94 | 45.36 | 48.01 | 51.91 | 55.72 | 58.00 | 58.72 | 57.40 | 52.00 | 46.36 | 42.18 | 50.26 | |||||||||||||
S.D. | 2.98 | 2.72 | 2.20 | 1.85 | 1.67 | 1.66 | 1.55 | 1.41 | 1.93 | 1.60 | 2.34 | 2.49 | 0.95 | |||||||||||||
SKEW | -0.46 | 0.09 | 0.05 | -0.44 | 0.75 | 0.24 | 0.30 | -0.29 | 0.72 | 0.14 | -0.81 | -0.38 | -0.20 | |||||||||||||
MAX | 47.56 | 50.20 | 49.95 | 51.37 | 56.35 | 59.91 | 61.28 | 62.17 | 62.17 | 55.10 | 50.50 | 47.55 | 52.55 | |||||||||||||
MIN | 34.08 | 36.95 | 40.60 | 43.75 | 48.98 | 52.34 | 55.27 | 54.48 | 53.63 | 48.81 | 38.57 | 36.82 | 47.75 | |||||||||||||
YRS | 51 | 55 | 54 | 58 | 56 | 55 | 57 | 53 | 57 | 56 | 52 | 50 | 35 |