YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 67.79 | c | 67.84 | 67.93 | a | 61.37 | a | 51.03 | 45.14 | b | 60.18 | f | ||
1949 | 40.97 | a | 46.78 | a | 53.58 | 58.90 | 63.55 | 63.93 | c | 66.32 | 69.58 | 68.24 | a | 58.97 | 61.60 | 48.90 | 58.44 | |||||||||
1950 | 40.35 | 49.96 | a | 50.77 | 56.23 | 60.46 | e | 66.38 | a | 66.59 | b | 69.21 | c | 65.63 | 58.63 | a | 54.23 | 55.00 | 57.79 | |||||||
1951 | 47.23 | a | 51.82 | 50.23 | a | 57.97 | 61.00 | a | 64.23 | 66.07 | c | 66.94 | 65.83 | 61.77 | a | 55.23 | 46.77 | 57.93 | ||||||||
1952 | 44.94 | 49.10 | 50.03 | a | 57.52 | a | 60.97 | a | 62.30 | 66.30 | a | 67.58 | 67.69 | a | 65.77 | 55.93 | 50.32 | 58.20 | ||||||||
1953 | 53.00 | j | 51.08 | b | 53.86 | b | 56.32 | b | 61.48 | ----- | z | 67.27 | a | 68.94 | 68.00 | a | 63.71 | 55.90 | 50.90 | 59.75 | b | |||||
1954 | 46.77 | 53.61 | 52.65 | 55.17 | 60.65 | 63.12 | n | 63.77 | a | 67.00 | 66.45 | a | 63.34 | b | 57.37 | 50.29 | 57.91 | a | ||||||||
1955 | 48.19 | 48.08 | b | 48.10 | 51.97 | 57.41 | b | 62.62 | n | 64.06 | 64.23 | 65.37 | 60.00 | a | 49.90 | a | 49.16 | 55.13 | a | |||||||
1956 | 48.42 | 44.43 | a | 51.17 | a | 58.17 | 62.90 | a | 63.30 | 68.77 | 67.40 | a | 66.87 | 59.03 | 56.03 | 51.71 | 58.18 | |||||||||
1957 | 43.68 | 52.39 | 54.00 | 56.93 | 61.48 | 66.21 | a | 68.13 | 69.06 | 74.63 | 62.77 | a | 58.13 | 52.55 | 60.00 | |||||||||||
1958 | 54.39 | 57.32 | 54.48 | 58.93 | 64.68 | 68.17 | 70.00 | a | 70.74 | 69.60 | 65.65 | 54.60 | 55.16 | 61.98 | ||||||||||||
1959 | 50.68 | 50.43 | 53.94 | 58.00 | 62.94 | 64.55 | a | 67.47 | a | 66.55 | 64.60 | 62.90 | 56.77 | 52.29 | 59.26 | |||||||||||
1960 | 47.19 | 52.28 | 52.87 | 57.83 | 59.52 | 63.73 | 66.61 | 66.87 | 68.03 | 63.06 | 55.37 | 52.45 | 58.82 | |||||||||||||
1961 | 54.94 | 52.86 | 53.65 | 56.27 | 60.57 | a | 67.37 | 68.41 | b | 68.42 | 65.97 | 61.13 | 53.37 | 49.32 | 59.35 | |||||||||||
1962 | 48.32 | 52.43 | 51.87 | 57.90 | 57.06 | 62.57 | 64.45 | 69.03 | 66.23 | 62.90 | 57.27 | 53.71 | 58.65 | |||||||||||||
1963 | 46.23 | 58.89 | 53.77 | 55.30 | 61.61 | 62.83 | 66.70 | a | 67.00 | a | 70.63 | 63.52 | 54.67 | 53.65 | 59.57 | |||||||||||
1964 | 49.55 | 51.41 | 51.77 | 53.73 | 57.97 | 62.67 | 66.42 | 66.87 | 66.47 | 65.16 | 53.13 | 47.19 | 57.70 | |||||||||||||
1965 | 50.84 | 51.29 | 58.13 | 57.33 | 56.87 | 61.77 | 66.70 | a | 69.61 | 66.33 | 65.19 | 56.10 | 47.74 | 58.99 | ||||||||||||
1966 | 50.71 | 51.18 | 53.13 | a | 59.00 | 59.10 | 64.89 | b | 64.87 | 68.58 | 70.20 | 62.71 | 55.13 | 51.52 | b | 59.25 | ||||||||||
1967 | 50.00 | 51.75 | 50.81 | 53.55 | a | 60.90 | a | 65.17 | 67.67 | a | 71.67 | a | 72.57 | 62.68 | 56.60 | 47.48 | 59.24 | |||||||||
1968 | 49.27 | a | 58.52 | 56.90 | 53.93 | 60.32 | 64.57 | 68.23 | 68.20 | a | 68.38 | a | 60.55 | 54.77 | 46.65 | 59.19 | ||||||||||
1969 | 42.94 | 48.25 | 55.42 | 56.47 | 64.53 | a | 66.17 | 65.45 | 67.47 | a | 66.14 | a | 61.65 | 56.20 | 51.94 | 58.55 | ||||||||||
1970 | 49.67 | a | 57.93 | 55.32 | 53.80 | 61.55 | 65.52 | a | 66.52 | 66.55 | 65.34 | a | 61.29 | 53.72 | a | 47.00 | a | 58.68 | ||||||||
1971 | 47.19 | 50.32 | 50.35 | 57.00 | 60.19 | 61.97 | 64.00 | 70.03 | 67.17 | 60.35 | 53.03 | 46.48 | 57.34 | |||||||||||||
1972 | 45.87 | 50.55 | 54.81 | 54.80 | 63.10 | 66.00 | a | 71.80 | a | 72.57 | a | 68.53 | 63.23 | a | 55.37 | 46.10 | 59.39 | |||||||||
1973 | 47.77 | 56.61 | 54.65 | 58.67 | 63.65 | 66.97 | 68.71 | 66.26 | 71.87 | 61.77 | 51.63 | 52.35 | 60.08 | |||||||||||||
1974 | 47.29 | 50.32 | 54.13 | 57.97 | 59.71 | 65.10 | 68.06 | 69.23 | a | 72.20 | 64.39 | 56.03 | 51.87 | 59.69 | ||||||||||||
1975 | 49.94 | 51.36 | 52.71 | 54.03 | 61.26 | 63.23 | 66.90 | 65.32 | 71.47 | 59.37 | a | 53.50 | 50.48 | 58.30 | ||||||||||||
1976 | 51.97 | a | 52.41 | 52.32 | 57.73 | 62.83 | a | 63.37 | 68.77 | a | 68.90 | b | 70.93 | b | 66.30 | a | 60.30 | 53.07 | a | 60.74 | ||||||
1977 | 53.93 | a | 57.61 | 52.93 | a | 58.50 | 60.48 | 65.57 | 67.65 | 69.61 | 65.43 | 62.16 | 51.77 | 50.77 | 59.70 | |||||||||||
1978 | 51.52 | 54.18 | 57.06 | 57.23 | 60.77 | 68.55 | a | 67.97 | a | 68.24 | b | 67.73 | 67.52 | 51.93 | 46.19 | 59.91 | ||||||||||
1979 | 44.40 | a | 49.29 | 57.55 | 57.97 | ----- | z | 65.00 | a | 69.48 | 68.50 | a | 75.17 | 65.83 | a | 56.20 | 53.35 | 60.25 | a | |||||||
1980 | 48.35 | 55.07 | 53.03 | 59.60 | 59.87 | 62.67 | 67.32 | 65.68 | 68.53 | 65.74 | 56.03 | 53.03 | 59.58 | |||||||||||||
1981 | 56.26 | 55.54 | 57.16 | 57.97 | 60.83 | a | 64.60 | 67.26 | 68.52 | b | 68.93 | 62.23 | 57.03 | 52.16 | 60.71 | |||||||||||
1982 | 47.24 | b | 51.43 | 52.97 | 55.31 | a | 60.77 | 62.90 | 64.87 | 67.53 | a | 69.31 | a | 64.30 | a | 54.59 | a | 51.10 | 58.53 | |||||||
1983 | 53.74 | 55.64 | 57.61 | 60.23 | 62.52 | 64.87 | 68.68 | 69.64 | c | 68.03 | a | 62.81 | 55.03 | 45.75 | c | 60.38 | ||||||||||
1984 | 52.81 | 55.72 | 57.42 | 56.10 | a | 60.40 | a | 61.76 | a | 67.45 | 69.57 | a | 68.55 | a | 59.16 | 53.30 | 47.41 | b | 59.14 | |||||||
1985 | 52.74 | d | 49.29 | 52.45 | 55.93 | 62.26 | 64.11 | b | 68.26 | 69.19 | 65.97 | a | 58.67 | a | 46.48 | a | 51.35 | 58.06 | ||||||||
1986 | 55.16 | 52.93 | a | 58.68 | 55.63 | 61.10 | 67.03 | a | 65.13 | 67.35 | 64.00 | 62.06 | 54.60 | 52.94 | 59.72 | |||||||||||
1987 | 51.23 | a | 54.86 | 56.67 | a | 59.53 | 62.26 | 65.14 | a | 65.13 | 68.32 | 66.33 | 67.30 | a | 57.37 | 47.97 | a | 60.18 | ||||||||
1988 | 49.29 | 53.66 | 54.19 | 55.97 | a | 60.48 | 64.10 | a | 65.63 | d | 68.87 | a | 68.80 | 62.77 | 53.53 | 51.14 | b | 59.04 | ||||||||
1989 | 48.29 | 44.70 | a | 51.67 | a | 62.00 | 60.29 | 65.80 | 65.52 | 66.16 | 72.37 | 61.10 | 54.83 | 51.00 | 58.64 | |||||||||||
1990 | 49.77 | a | 50.11 | 55.03 | a | 57.63 | 58.83 | a | 63.45 | a | 67.84 | 69.61 | 69.37 | 59.90 | 53.67 | 43.69 | b | 58.24 | ||||||||
1991 | 49.10 | 57.37 | a | 51.81 | 53.77 | 56.13 | 60.27 | 67.13 | 65.90 | 72.33 | 63.35 | 55.20 | 50.52 | 58.57 | ||||||||||||
1992 | 51.90 | 57.45 | 56.90 | 59.17 | 64.13 | 65.67 | 70.85 | d | 73.76 | b | 69.47 | 64.39 | c | 56.13 | 48.07 | c | 61.49 | |||||||||
1993 | 47.39 | c | 52.83 | e | 56.56 | f | 57.79 | a | 64.85 | d | 65.72 | a | 66.39 | c | 70.11 | d | 67.92 | f | 63.17 | b | 53.28 | a | 51.72 | b | 59.33 | b |
1994 | 53.81 | 50.50 | 57.24 | b | 57.43 | b | 62.33 | a | 63.90 | 65.74 | 70.70 | a | 69.00 | e | 61.00 | b | 50.37 | c | 49.76 | b | 59.32 | |||||
1995 | 52.77 | 55.08 | c | 55.93 | a | 57.56 | c | 60.48 | 64.11 | c | 69.75 | c | 68.14 | c | 70.00 | b | 62.00 | 58.13 | 51.66 | b | 60.47 | |||||
1996 | 49.65 | 53.00 | c | 56.16 | 58.17 | a | 59.03 | a | 63.47 | 68.13 | a | 68.63 | a | 65.50 | 61.06 | 53.67 | 50.84 | 58.94 | ||||||||
1997 | 51.23 | a | 53.11 | 53.73 | a | 57.40 | 66.69 | b | 65.43 | 68.23 | 72.52 | b | 69.78 | c | 60.19 | 58.20 | 51.77 | a | 60.69 | |||||||
1998 | 52.45 | b | 54.59 | a | 55.17 | a | 56.59 | a | 59.68 | 62.03 | 67.28 | b | 68.57 | c | 68.21 | f | 62.89 | c | 54.38 | a | 47.58 | e | 58.29 | a | ||
1999 | 49.90 | a | 50.11 | a | 52.11 | c | 56.15 | c | 57.54 | c | 62.03 | a | 64.79 | b | 67.93 | b | 66.04 | c | 62.85 | e | 58.75 | b | 54.75 | c | 58.58 | |
2000 | 48.33 | a | 53.89 | b | 54.65 | 60.79 | a | 60.74 | 66.46 | b | 67.68 | 67.40 | a | 68.66 | a | 62.87 | a | 53.10 | 52.68 | 59.77 | ||||||
2001 | 52.31 | b | 52.46 | 54.45 | b | 55.37 | 63.27 | a | 63.63 | 63.39 | 67.68 | 66.37 | 60.55 | 55.87 | 50.17 | a | 58.79 | |||||||||
2002 | 48.77 | 52.67 | a | 51.19 | 55.77 | 57.68 | 63.54 | b | 67.77 | 67.34 | b | 68.70 | 61.80 | a | 58.07 | 51.83 | a | 58.76 | ||||||||
2003 | 55.81 | 52.89 | 55.58 | 56.59 | a | 61.83 | a | 67.24 | a | 69.19 | 69.58 | 69.50 | 63.43 | a | 53.17 | 51.26 | 60.51 | |||||||||
2004 | 49.83 | a | 54.54 | a | 56.26 | 62.17 | a | 61.17 | a | 65.72 | a | 70.43 | a | 69.71 | 66.47 | 62.29 | 54.50 | 51.33 | a | 60.37 | ||||||
2005 | 52.16 | 56.46 | 59.07 | a | 57.43 | 64.13 | 63.90 | 68.93 | a | 67.87 | 64.63 | 61.16 | 53.93 | b | 51.00 | a | 60.06 | |||||||||
2006 | 52.47 | a | 51.36 | 52.07 | a | 57.10 | ----- | z | 65.68 | e | 66.52 | d | 63.97 | b | 66.36 | e | 59.96 | d | 52.96 | b | 51.29 | g | 58.84 | b | ||
2007 | 48.23 | e | 53.04 | c | 64.08 | e | 68.29 | p | 61.95 | j | 64.70 | 69.32 | c | 70.57 | c | 68.17 | a | 61.00 | a | 56.00 | c | 49.80 | a | 60.49 | b | |
2008 | 47.93 | c | 52.79 | a | 52.00 | 55.23 | 60.69 | b | 62.48 | c | 67.90 | 68.39 | 69.40 | 63.00 | 58.67 | 48.00 | 58.87 | |||||||||
2009 | 52.48 | 53.68 | 51.97 | 56.67 | 61.68 | 64.77 | 68.42 | 68.43 | a | 70.17 | 61.10 | 55.41 | a | 48.04 | c | 59.40 | ||||||||||
2010 | 54.32 | 56.81 | a | 56.45 | 55.86 | a | 58.58 | 62.23 | d | 65.47 | a | 66.74 | 66.70 | g | 67.27 | t | ----- | z | ----- | z | 59.56 | d | ||||
2011 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2012 | ----- | z | ----- | z | ----- | z | ----- | z | 59.67 | a | 63.07 | 65.90 | 68.30 | a | 66.66 | a | 62.29 | 56.30 | 48.90 | 61.39 | d | |||||
2013 | 48.87 | 50.93 | 53.07 | b | 57.23 | 59.79 | b | 65.67 | 66.06 | 68.52 | b | 67.37 | 60.65 | 56.17 | 47.16 | 58.46 | ||||||||||
2014 | 55.07 | a | 48.85 | a | 56.26 | 58.43 | 64.81 | d | 64.21 | a | 68.83 | a | 69.81 | 72.37 | 66.52 | 57.33 | 54.84 | 61.44 | ||||||||
2015 | 56.48 | 58.79 | 60.16 | 58.43 | 59.87 | 65.43 | 70.73 | a | 71.73 | a | 68.00 | 66.48 | 55.83 | 51.58 | 61.96 | |||||||||||
2016 | 52.90 | 57.29 | a | 57.35 | 62.90 | 64.00 | 66.90 | 67.39 | 69.34 | b | 67.67 | 61.55 | 58.80 | 46.90 | 61.08 | |||||||||||
2017 | 48.61 | 50.21 | 52.93 | a | 56.67 | 61.29 | 64.83 | a | 66.94 | 70.43 | a | 71.23 | 64.10 | 55.30 | 54.39 | c | 59.74 | |||||||||
2018 | 54.78 | d | 49.00 | 53.72 | b | 57.10 | 61.00 | 64.40 | 67.77 | a | 69.07 | b | 67.17 | a | 64.25 | c | 59.50 | 53.97 | b | 60.14 | ||||||
2019 | 54.67 | a | 47.04 | a | 56.63 | a | 57.86 | b | 61.29 | 63.75 | b | 68.17 | b | 71.21 | c | 67.81 | c | 61.87 | h | 52.10 | 48.04 | h | 60.05 | b | ||
2020 | 50.80 | f | 65.20 | n | ----- | z | ----- | z | 62.87 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 62.87 | k | |
2021 | ----- | z | ----- | z | ----- | z | ----- | z | 59.77 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 59.77 | k |
2022 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 50.03 | 52.61 | 54.36 | 57.16 | 61.07 | 64.47 | 67.27 | 68.55 | 68.33 | 62.53 | 55.15 | 50.35 | 59.40 | |||||||||||||
S.D. | 3.53 | 3.27 | 2.75 | 2.04 | 2.10 | 1.69 | 1.75 | 1.83 | 2.41 | 2.14 | 2.51 | 2.70 | 1.06 | |||||||||||||
SKEW | -0.39 | -0.09 | 0.61 | 0.26 | 0.08 | 0.09 | 0.04 | 0.18 | 0.66 | 0.33 | -0.37 | -0.29 | 0.49 | |||||||||||||
MAX | 56.48 | 58.89 | 64.08 | 62.90 | 66.69 | 68.55 | 71.80 | 73.76 | 75.17 | 67.52 | 61.60 | 55.16 | 61.98 | |||||||||||||
MIN | 40.35 | 44.43 | 48.10 | 51.97 | 56.13 | 60.27 | 63.39 | 63.97 | 64.00 | 58.63 | 46.48 | 43.69 | 57.34 | |||||||||||||
YRS | 68 | 69 | 68 | 68 | 69 | 67 | 71 | 71 | 68 | 69 | 70 | 68 | 59 |