YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1958 | ----- | z | ----- | z | ----- | z | ----- | z | 50.10 | 52.53 | 53.74 | 56.74 | 53.93 | 51.03 | 43.40 | 41.97 | 50.43 | d | ||||||||
1959 | 42.71 | 39.89 | 42.10 | 47.53 | 47.65 | 50.10 | 53.45 | 53.74 | 52.40 | 49.55 | 42.13 | 37.94 | 46.60 | |||||||||||||
1960 | 37.45 | 40.86 | 43.90 | 44.10 | 46.68 | 52.20 | 52.13 | 51.77 | 51.53 | 46.48 | 41.80 | 36.61 | 45.46 | |||||||||||||
1961 | 38.58 | 40.36 | 41.00 | 43.23 | 47.90 | 53.60 | 53.16 | 55.77 | 51.73 | 48.00 | 42.67 | 38.61 | 46.22 | |||||||||||||
1962 | 36.29 | 42.61 | 40.39 | 46.10 | 46.48 | 50.10 | 51.61 | 52.52 | 51.07 | 49.42 | 42.27 | 40.81 | 45.80 | |||||||||||||
1963 | 35.06 | 46.43 | 39.94 | 44.03 | 49.74 | 51.23 | 51.58 | 51.90 | 52.87 | 50.32 | 43.13 | 37.52 | 46.15 | |||||||||||||
1964 | 36.55 | 35.17 | 38.58 | 41.66 | a | 45.65 | 50.33 | 51.97 | 53.10 | 49.43 | 49.74 | 41.13 | 44.10 | 44.78 | ||||||||||||
1965 | 40.29 | 38.21 | 42.45 | 45.93 | 47.06 | 51.30 | 53.00 | 54.61 | 51.07 | 49.74 | 45.43 | 36.35 | 46.29 | |||||||||||||
1966 | 36.71 | 38.64 | 41.77 | 47.10 | 49.23 | 50.33 | 51.90 | 53.16 | 51.97 | 48.48 | 46.83 | 41.26 | 46.45 | |||||||||||||
1967 | 38.45 | 39.32 | 42.32 | 41.50 | 47.65 | 50.97 | 52.35 | 53.29 | 55.30 | 48.23 | 45.83 | 35.68 | 45.91 | |||||||||||||
1968 | 37.16 | 47.52 | 42.77 | 42.50 | 47.45 | 50.20 | 52.55 | 53.35 | 51.37 | 46.94 | 43.57 | 37.71 | 46.09 | |||||||||||||
1969 | 40.00 | 40.43 | 38.57 | a | 41.40 | 47.94 | 53.00 | 51.74 | 49.10 | 52.33 | 45.23 | 42.67 | 41.06 | 45.29 | ||||||||||||
1970 | 42.06 | 39.93 | 40.39 | 41.13 | 49.03 | 51.53 | 51.71 | x | ----- | z | 49.93 | a | 48.74 | 47.47 | 41.84 | 45.21 | b | |||||||||
1971 | 41.47 | a | 39.75 | 41.90 | 43.30 | 48.35 | 49.79 | b | 51.71 | 54.28 | b | 52.40 | 44.16 | 41.17 | 36.81 | 45.42 | ||||||||||
1972 | 37.94 | 43.69 | 45.16 | 44.10 | 47.77 | 50.25 | j | 54.97 | 55.16 | 53.73 | 50.90 | 45.50 | 38.65 | 47.05 | a | |||||||||||
1973 | 39.55 | 45.21 | 42.61 | 45.73 | 49.84 | 51.60 | 52.39 | 52.10 | 51.60 | 47.70 | a | 43.59 | a | 41.87 | 46.98 | |||||||||||
1974 | 39.97 | 38.75 | 45.65 | 43.97 | 47.26 | 50.40 | 52.94 | 53.90 | 52.63 | 51.59 | b | 43.47 | 39.26 | 46.65 | ||||||||||||
1975 | 38.42 | 42.89 | 44.42 | 43.50 | 48.07 | a | 52.75 | j | 52.29 | 52.45 | 52.73 | 46.61 | 41.20 | 39.13 | 45.61 | a | ||||||||||
1976 | 37.39 | 41.41 | 39.57 | c | 43.39 | b | 48.71 | 50.27 | 53.35 | 55.81 | 52.77 | 49.67 | d | 45.43 | 37.00 | 46.23 | ||||||||||
1977 | 38.61 | 40.93 | 38.81 | 43.40 | 47.43 | c | 51.29 | b | 51.72 | m | 53.96 | d | 52.90 | 47.62 | b | 41.43 | 43.17 | a | 45.41 | a | ||||||
1978 | 44.16 | 44.00 | a | 47.68 | 44.83 | a | 47.18 | c | ----- | z | 55.35 | 53.19 | 51.80 | 49.23 | 41.77 | ----- | z | 47.92 | b | |||||||
1979 | 39.33 | d | 39.79 | n | 45.20 | k | 45.54 | b | 50.26 | 51.17 | 54.32 | 54.68 | 55.00 | 52.74 | 44.60 | 40.62 | b | 48.83 | b | |||||||
1980 | 44.30 | a | 45.62 | 42.97 | 45.86 | a | 48.58 | 50.37 | 54.52 | 54.19 | 52.70 | 48.32 | 41.37 | 40.87 | 47.47 | |||||||||||
1981 | 44.45 | 43.71 | 44.10 | 44.87 | 49.52 | b | 51.84 | k | 52.10 | j | 54.42 | 53.63 | 47.00 | 49.33 | 43.52 | 47.45 | b | |||||||||
1982 | 36.29 | 43.36 | 43.77 | a | 45.45 | a | ----- | z | 52.57 | 53.42 | 53.74 | 53.07 | c | 50.03 | 44.50 | 39.87 | a | 46.91 | a | |||||||
1983 | 41.58 | 45.96 | 45.90 | 44.90 | 49.71 | 52.97 | 56.39 | 58.68 | 60.03 | 54.71 | 48.60 | 48.29 | 50.64 | |||||||||||||
1984 | 43.26 | 43.66 | 47.19 | 46.33 | 48.52 | b | 48.30 | 54.19 | 56.77 | 55.13 | 49.10 | 44.37 | 40.52 | 48.11 | ||||||||||||
1985 | 37.39 | 39.04 | 40.87 | 45.77 | 47.19 | 52.55 | a | 55.13 | 54.26 | 53.30 | 49.06 | 41.57 | 42.97 | 46.59 | ||||||||||||
1986 | 46.68 | 45.86 | 48.37 | a | 47.07 | a | 50.00 | 55.03 | 56.10 | 57.39 | 52.87 | 50.29 | 45.23 | 42.45 | 49.78 | |||||||||||
1987 | 40.74 | 44.11 | 45.77 | ----- | z | 53.29 | ----- | z | 55.29 | 57.48 | 55.33 | 55.71 | 46.77 | 43.27 | a | 49.78 | b | |||||||||
1988 | 44.29 | 43.97 | 44.71 | 50.07 | 50.68 | 54.00 | 56.65 | 58.26 | 54.40 | 54.26 | 48.73 | 42.18 | c | 50.18 | ||||||||||||
1989 | 40.00 | 42.00 | 48.52 | 48.54 | b | 49.10 | 52.27 | 51.03 | ----- | z | 54.00 | 47.81 | 43.50 | 37.06 | 46.71 | a | ||||||||||
1990 | 36.35 | 37.33 | a | 45.60 | a | 49.60 | ----- | z | 53.37 | 55.00 | a | 56.19 | 53.97 | 48.71 | 42.37 | 34.42 | 46.63 | a | ||||||||
1991 | 40.39 | 45.22 | a | 43.58 | 44.30 | 48.55 | 50.47 | 54.58 | 55.77 | 54.53 | 50.55 | 45.40 | 40.17 | a | 47.79 | |||||||||||
1992 | 40.84 | 47.45 | 48.74 | 50.00 | 53.94 | 55.43 | 57.74 | 55.39 | 54.47 | 53.32 | 44.67 | 40.13 | a | 50.18 | ||||||||||||
1993 | 42.30 | a | 44.07 | 48.90 | 48.27 | 52.00 | 53.10 | 55.94 | 56.55 | 54.40 | 52.39 | 44.07 | 41.80 | a | 49.48 | |||||||||||
1994 | 42.16 | 42.54 | 46.10 | 48.47 | 52.06 | 52.33 | 54.81 | 55.26 | 56.37 | 50.13 | 41.77 | 41.16 | 48.60 | |||||||||||||
1995 | 48.73 | a | 49.21 | 47.50 | a | 48.63 | 52.39 | 53.53 | 57.19 | 56.03 | 55.87 | 51.68 | 49.43 | 44.26 | 51.21 | |||||||||||
1996 | 41.97 | 47.03 | 44.57 | a | 45.80 | 47.65 | 49.10 | 52.94 | 51.97 | 49.70 | 45.65 | 43.80 | 43.63 | a | 46.98 | |||||||||||
1997 | 42.06 | 40.43 | 41.58 | 44.90 | 50.13 | 51.53 | 53.71 | 55.90 | 54.00 | 47.42 | 47.57 | 39.65 | 47.41 | |||||||||||||
1998 | 44.68 | 42.50 | 43.80 | a | 42.27 | 46.00 | 53.10 | 54.23 | 54.68 | 54.38 | a | 46.03 | 43.70 | 38.16 | 46.96 | |||||||||||
1999 | 40.29 | 40.68 | 41.30 | a | 44.40 | 47.58 | 50.30 | 53.39 | 54.42 | 52.97 | 49.03 | 45.67 | 37.23 | 46.44 | ||||||||||||
2000 | 42.97 | 46.66 | 43.58 | 47.28 | a | 49.55 | 53.07 | 53.19 | 52.23 | 51.70 | 49.97 | 39.20 | 40.32 | 47.48 | ||||||||||||
2001 | 37.81 | 41.21 | 46.81 | 42.57 | 48.81 | 50.03 | 54.13 | 52.74 | 52.47 | 50.45 | 46.55 | a | 43.48 | 47.25 | ||||||||||||
2002 | 37.23 | 41.86 | 42.35 | 47.83 | a | 48.48 | 51.72 | a | 54.29 | 55.97 | 53.53 | 50.00 | 47.70 | 44.76 | b | 47.98 | ||||||||||
2003 | 47.13 | 43.04 | 45.06 | 45.97 | 50.32 | 55.20 | 55.65 | 59.19 | 57.53 | 50.81 | 44.00 | 46.39 | 50.02 | |||||||||||||
2004 | 41.94 | 42.48 | 46.61 | 46.00 | 48.48 | 52.17 | 55.61 | 56.29 | 51.40 | 49.58 | 43.20 | 40.70 | a | 47.87 | ||||||||||||
2005 | 42.29 | 46.54 | 46.77 | 44.17 | 50.32 | 51.77 | 54.65 | 54.45 | 51.50 | 47.45 | 45.87 | 44.61 | 48.37 | |||||||||||||
2006 | 41.42 | 41.39 | 41.68 | 47.30 | 49.52 | 52.97 | 54.52 | 54.48 | 52.00 | 47.74 | 44.57 | 39.32 | 47.24 | |||||||||||||
2007 | 34.84 | 42.57 | 43.90 | 44.50 | 48.19 | 49.77 | 54.19 | 54.06 | 51.90 | 48.00 | 43.87 | 38.03 | 46.15 | |||||||||||||
2008 | 39.39 | 40.59 | 40.71 | 42.33 | 46.84 | 50.07 | 53.45 | 53.39 | 51.17 | a | 47.94 | 46.59 | a | 38.48 | 45.91 | |||||||||||
2009 | 39.16 | 41.93 | a | 41.65 | 44.37 | 49.37 | a | 52.57 | 53.07 | a | 54.29 | 52.23 | 48.39 | 40.37 | 40.19 | 46.46 | ||||||||||
2010 | 43.26 | 44.39 | 41.81 | 43.23 | 45.68 | 51.37 | 53.03 | 52.81 | 51.17 | 50.03 | 42.03 | 43.17 | a | 46.83 | ||||||||||||
2011 | 40.42 | 37.57 | 43.93 | q | 43.93 | 46.29 | 50.97 | 53.65 | 53.74 | 53.23 | 51.65 | 41.80 | 34.68 | 46.17 | a | |||||||||||
2012 | 38.23 | 40.28 | 42.10 | a | 44.67 | 46.81 | 48.57 | 53.46 | g | 52.52 | b | 51.92 | e | 49.94 | n | 45.86 | a | 41.58 | 45.25 | b | ||||||
2013 | 37.45 | 37.68 | 43.32 | 45.47 | 48.81 | 52.92 | r | 54.39 | 54.42 | 52.77 | 46.06 | 43.10 | 35.42 | 45.35 | a | |||||||||||
2014 | 40.74 | 43.54 | 45.13 | a | 46.97 | 49.97 | 52.43 | 56.42 | 57.94 | 56.77 | 50.97 | 46.67 | 46.10 | 49.47 | ||||||||||||
2015 | 42.35 | 46.36 | 45.35 | 44.23 | 50.81 | 53.73 | 57.74 | 57.58 | 54.43 | 54.10 | 41.70 | 38.65 | 48.92 | |||||||||||||
2016 | 45.45 | 44.38 | 47.23 | 47.63 | 51.65 | 51.47 | 52.16 | 54.97 | 52.33 | 49.35 | e | 45.26 | c | 38.22 | v | 49.26 | a | |||||||||
2017 | 42.16 | 46.18 | 45.77 | a | 46.03 | 48.97 | a | 52.50 | b | 53.35 | k | 56.84 | f | 56.27 | 48.07 | a | 46.97 | 37.81 | 47.07 | b | ||||||
2018 | 43.22 | h | 38.93 | 43.28 | b | 45.63 | 50.07 | c | 49.00 | t | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 44.48 | h | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 40.53 | 42.50 | 43.74 | 45.25 | 48.87 | 51.72 | 53.98 | 54.61 | 53.17 | 49.39 | 44.24 | 40.40 | 47.40 | |||||||||||||
S.D. | 3.08 | 3.02 | 2.70 | 2.17 | 1.81 | 1.60 | 1.63 | 1.97 | 1.93 | 2.36 | 2.37 | 3.03 | 1.60 | |||||||||||||
SKEW | 0.37 | -0.03 | 0.06 | 0.25 | 0.56 | 0.19 | 0.41 | 0.12 | 0.90 | 0.45 | 0.28 | 0.21 | 0.71 | |||||||||||||
MAX | 48.73 | 49.21 | 48.90 | 50.07 | 53.94 | 55.43 | 57.74 | 59.19 | 60.03 | 55.71 | 49.43 | 48.29 | 51.21 | |||||||||||||
MIN | 34.84 | 35.17 | 38.57 | 41.13 | 45.65 | 48.30 | 51.03 | 49.10 | 49.43 | 44.16 | 39.20 | 34.42 | 44.78 | |||||||||||||
YRS | 59 | 59 | 58 | 59 | 59 | 54 | 55 | 57 | 60 | 59 | 60 | 58 | 43 |