YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 67.97 | 67.53 | a | 68.83 | 60.45 | 51.17 | 45.23 | 60.20 | f | |||||
1949 | 39.13 | 47.71 | 54.26 | 58.96 | b | 63.03 | 66.77 | 70.45 | 69.77 | 68.73 | 59.03 | 58.53 | 47.35 | 58.65 | ||||||||||||
1950 | 40.19 | 49.75 | 51.06 | 57.60 | 60.55 | 65.43 | 70.81 | 72.55 | 67.57 | 58.06 | 54.37 | 54.23 | 58.51 | |||||||||||||
1951 | 47.45 | 51.32 | 50.45 | 60.17 | 62.77 | 68.03 | 69.35 | 70.48 | 66.90 | 60.84 | 54.17 | 46.42 | 59.03 | |||||||||||||
1952 | 43.32 | 48.24 | 50.71 | 58.73 | 62.45 | 63.03 | a | 71.13 | 69.52 | 70.43 | 66.06 | 51.37 | 49.03 | 58.67 | ||||||||||||
1953 | 52.10 | 51.93 | 52.90 | 56.73 | 60.90 | 61.72 | a | 70.00 | 69.97 | 70.17 | 63.58 | 54.93 | 49.77 | 59.56 | ||||||||||||
1954 | 46.71 | 53.00 | 53.77 | a | 55.70 | 62.23 | 61.73 | 65.77 | 66.94 | 67.67 | 62.26 | 56.37 | 48.68 | 58.40 | ||||||||||||
1955 | 45.68 | 48.54 | 49.58 | 51.90 | a | 57.67 | a | 63.38 | a | 64.65 | 69.19 | 67.34 | a | 59.32 | 49.93 | 48.32 | 56.29 | |||||||||
1956 | 47.42 | 44.07 | 50.61 | 58.00 | 63.61 | 63.30 | c | 69.83 | a | 69.77 | a | 68.28 | a | 58.68 | 53.31 | a | 47.38 | b | 57.85 | |||||||
1957 | 42.42 | 52.46 | 54.30 | a | 58.27 | 63.35 | 68.17 | 70.73 | a | 70.23 | 74.48 | a | 60.97 | a | 52.90 | 50.94 | 59.93 | |||||||||
1958 | 51.40 | a | 55.61 | 54.55 | 59.30 | 66.39 | 69.30 | 74.55 | 75.00 | 70.55 | a | 64.87 | 54.03 | 53.16 | 62.39 | |||||||||||
1959 | 49.00 | 50.68 | 53.97 | 58.53 | 62.48 | 65.10 | 70.77 | 68.93 | a | 64.17 | 62.04 | c | 54.47 | 48.35 | 59.04 | |||||||||||
1960 | 44.45 | 50.28 | 52.60 | a | 57.17 | 58.58 | 67.37 | 69.39 | 68.40 | a | 68.50 | b | 60.90 | a | 52.97 | a | 48.55 | b | 58.26 | |||||||
1961 | 53.00 | 51.75 | 53.00 | 55.13 | 59.87 | 68.90 | 70.90 | b | 71.81 | 65.83 | 60.16 | 51.31 | a | 47.10 | 59.06 | |||||||||||
1962 | 46.19 | 51.75 | 52.37 | a | 57.03 | 57.03 | a | 64.11 | b | 67.32 | 69.87 | a | 67.37 | 61.81 | 54.33 | 49.48 | 58.22 | |||||||||
1963 | 44.16 | 56.68 | 52.73 | a | 53.96 | b | 61.40 | a | 64.52 | a | 66.26 | 69.13 | 70.43 | 61.55 | 53.08 | d | 49.97 | 58.66 | ||||||||
1964 | 48.13 | 51.28 | 51.90 | 53.97 | 58.26 | 62.90 | 68.00 | 68.39 | 67.00 | a | 62.10 | 50.77 | 45.00 | 57.31 | ||||||||||||
1965 | 46.23 | 50.43 | 59.68 | 56.70 | 58.50 | a | 64.13 | 70.55 | 70.87 | 69.70 | 64.59 | b | 54.60 | 44.71 | 59.22 | |||||||||||
1966 | 48.23 | 50.14 | 52.81 | 58.53 | 61.65 | 66.72 | a | 67.87 | 71.61 | c | 71.50 | b | 61.42 | 54.53 | 50.16 | 59.60 | ||||||||||
1967 | 49.55 | 52.39 | 50.65 | 53.43 | 64.03 | 67.77 | 72.90 | a | 76.90 | 73.43 | 62.19 | d | 54.47 | 46.81 | 60.38 | |||||||||||
1968 | 47.03 | 58.14 | 55.55 | 55.07 | 60.74 | 65.77 | 69.88 | e | 68.94 | 69.27 | 59.03 | 53.07 | 45.00 | 58.96 | ||||||||||||
1969 | 40.84 | 47.14 | 56.84 | 55.37 | 67.00 | a | 67.33 | 67.94 | 70.10 | 67.57 | 60.70 | a | 54.40 | 49.39 | 58.72 | |||||||||||
1970 | 47.65 | 56.57 | 55.32 | 53.73 | 62.77 | 67.90 | 69.94 | 69.77 | 65.87 | 58.58 | 53.07 | 45.03 | b | 58.85 | ||||||||||||
1971 | 45.45 | 48.04 | a | 50.13 | 56.27 | 59.61 | 61.03 | a | 66.90 | 72.00 | 68.24 | a | 59.35 | 51.50 | 44.52 | 56.92 | ||||||||||
1972 | 43.68 | 48.86 | 54.29 | 53.90 | 62.71 | 65.97 | a | 72.11 | c | 73.23 | 67.76 | e | 59.91 | h | 52.69 | a | 43.03 | 58.02 | a | |||||||
1973 | 45.19 | 54.46 | 51.67 | a | 58.00 | 61.90 | 64.57 | 68.06 | 67.17 | h | 70.60 | 59.84 | 49.03 | a | 50.39 | 57.61 | a | |||||||||
1974 | 44.90 | 48.79 | 53.16 | 55.80 | 57.61 | 64.57 | 68.94 | 69.58 | 72.07 | a | 63.32 | 53.77 | 49.84 | 58.53 | ||||||||||||
1975 | 48.10 | 48.86 | 51.48 | 52.90 | 62.00 | 63.57 | 67.06 | 66.77 | 71.23 | 57.00 | 50.57 | 48.03 | 57.30 | |||||||||||||
1976 | 48.65 | 49.38 | 50.81 | 55.83 | 62.42 | 63.50 | 68.77 | 69.00 | 70.23 | 61.97 | 54.53 | 47.06 | 58.51 | |||||||||||||
1977 | 47.42 | 52.96 | 50.42 | 57.57 | 56.87 | 65.50 | 68.26 | 70.87 | 64.33 | 60.45 | 50.30 | 48.97 | 57.83 | |||||||||||||
1978 | 48.39 | 52.04 | a | 57.81 | 55.83 | 61.26 | 68.38 | d | 70.80 | a | 70.23 | e | 66.33 | 66.03 | 49.40 | 42.03 | 59.04 | |||||||||
1979 | 40.65 | 47.18 | 56.58 | 56.47 | 63.52 | 66.73 | 70.55 | 69.52 | 72.53 | 63.13 | 51.43 | 51.61 | 59.16 | |||||||||||||
1980 | 45.26 | 52.59 | 51.90 | 58.80 | 59.48 | 62.30 | 68.55 | 68.35 | 68.57 | 63.06 | 53.93 | 50.84 | 58.64 | |||||||||||||
1981 | 52.87 | 52.68 | 56.45 | 57.67 | 60.13 | 63.10 | 69.94 | 71.45 | 68.17 | 61.23 | 54.27 | 49.84 | 59.82 | |||||||||||||
1982 | 45.23 | 49.43 | 52.87 | a | 55.77 | 62.93 | a | 65.30 | 66.73 | a | 70.29 | 69.23 | 61.19 | 50.97 | 47.58 | 58.13 | ||||||||||
1983 | 50.19 | 53.21 | 55.39 | 60.70 | 63.94 | 65.57 | 68.45 | 71.23 | a | 69.63 | 63.77 | 53.27 | 43.74 | 59.92 | ||||||||||||
1984 | 49.29 | 52.48 | 56.29 | 55.67 | 61.10 | 62.41 | a | 71.32 | c | 72.55 | 69.47 | 57.50 | a | 50.97 | 43.87 | 58.58 | ||||||||||
1985 | 45.32 | 48.29 | 51.42 | 57.30 | 61.06 | 67.57 | 71.43 | a | 70.29 | 68.38 | a | 58.74 | 43.90 | 43.00 | 57.23 | |||||||||||
1986 | 51.61 | 51.11 | 58.03 | b | 56.54 | f | 63.52 | f | 67.77 | d | 67.47 | a | 71.00 | a | 66.22 | c | 62.47 | a | 54.04 | b | 47.82 | c | 59.75 | b | ||
1987 | 46.41 | b | 52.30 | a | 55.90 | 61.00 | c | 64.65 | 67.79 | b | 66.59 | b | 72.15 | d | 68.54 | b | 67.15 | d | 53.86 | a | 44.97 | b | 60.11 | |||
1988 | 45.94 | 52.66 | 55.14 | b | 57.23 | 61.06 | 66.80 | 72.97 | b | 72.37 | a | 68.62 | a | 62.55 | 52.47 | 47.40 | a | 59.60 | ||||||||
1989 | 46.45 | 43.11 | a | 51.45 | b | 63.34 | a | 62.59 | b | 68.36 | b | 68.23 | 70.14 | b | 73.83 | 61.23 | 52.97 | a | 47.13 | 59.07 | ||||||
1990 | 48.45 | 49.25 | 56.33 | a | 59.97 | 61.13 | 65.52 | a | 72.80 | a | 73.23 | a | 71.62 | d | 59.71 | 52.63 | 41.90 | 59.38 | ||||||||
1991 | 46.87 | 56.11 | 53.03 | b | 54.93 | a | 57.23 | 62.93 | 72.20 | a | 70.87 | a | 75.40 | 64.26 | 53.17 | 47.71 | 59.56 | |||||||||
1992 | 49.73 | a | 55.22 | b | 61.97 | a | 61.04 | b | 68.83 | a | 69.86 | a | 71.74 | 73.97 | 67.43 | 61.90 | a | 51.93 | a | 44.13 | a | 61.48 | ||||
1993 | 43.16 | 50.39 | 56.68 | 57.53 | 65.39 | 65.70 | 67.65 | 72.06 | 70.70 | 63.35 | 48.97 | 46.90 | 59.04 | |||||||||||||
1994 | 50.48 | 48.89 | 58.90 | 58.55 | a | 64.39 | 64.45 | a | 69.94 | 71.68 | 70.83 | 60.87 | 47.77 | 47.03 | 59.48 | |||||||||||
1995 | 51.19 | 54.30 | a | 56.45 | 58.52 | a | 63.03 | a | 66.25 | b | 72.45 | 70.42 | 70.62 | a | 60.16 | 56.30 | 48.26 | 60.66 | ||||||||
1996 | 47.19 | 51.48 | 56.27 | a | 59.41 | a | 60.32 | 66.64 | b | 73.76 | f | 72.80 | a | 67.60 | 59.65 | 51.79 | a | 48.68 | 58.35 | a | ||||||
1997 | 47.90 | a | 51.32 | 53.74 | 58.17 | a | 69.17 | a | 66.59 | a | 71.60 | a | 74.00 | f | 70.25 | b | 59.07 | a | 55.47 | 46.77 | 59.10 | a | ||||
1998 | 50.26 | 52.00 | 55.10 | 58.72 | a | 60.65 | 63.80 | 69.72 | b | 73.72 | b | 71.20 | 61.13 | a | 52.57 | 45.94 | 59.57 | |||||||||
1999 | 47.48 | 49.07 | 51.48 | 58.17 | 60.79 | b | 62.55 | a | 67.00 | d | 70.12 | e | 70.23 | 61.87 | 54.97 | 48.47 | a | 58.52 | ||||||||
2000 | 45.76 | b | 51.00 | 53.06 | 62.10 | 61.06 | 67.41 | a | 69.42 | 70.52 | 69.80 | 59.87 | 48.87 | 47.23 | 58.84 | |||||||||||
2001 | 48.00 | a | 51.11 | 54.29 | 55.17 | 65.23 | 64.40 | 68.55 | b | 69.28 | b | 69.27 | 60.57 | a | 53.33 | 47.61 | 58.90 | |||||||||
2002 | 47.41 | b | 52.00 | 51.35 | 58.53 | 59.77 | a | 66.72 | a | 70.60 | a | 71.89 | d | 71.33 | c | 61.26 | 54.80 | 49.34 | b | 59.58 | ||||||
2003 | 52.26 | 51.93 | 54.55 | 55.79 | a | 63.87 | 71.18 | b | 72.87 | 73.48 | 71.13 | 62.43 | a | 50.63 | 47.87 | 60.67 | ||||||||||
2004 | 45.87 | 51.31 | 57.16 | 63.47 | 62.94 | 67.57 | 72.59 | b | 73.55 | b | 67.97 | a | 61.32 | 51.53 | 49.29 | 60.38 | ||||||||||
2005 | 48.61 | 53.57 | 59.13 | 58.17 | 63.83 | a | 65.03 | a | 73.27 | e | 74.08 | f | 68.77 | 59.07 | b | 49.90 | 47.48 | 58.80 | a | |||||||
2006 | 50.19 | 51.11 | 51.87 | 59.53 | ----- | z | 68.54 | b | 71.83 | a | 71.33 | a | 70.33 | 60.70 | a | 51.80 | 48.13 | 59.58 | a | |||||||
2007 | 45.84 | 50.89 | 55.61 | 58.14 | a | 63.32 | 65.00 | 71.03 | 71.03 | 68.33 | 58.68 | 51.60 | 46.83 | a | 58.86 | |||||||||||
2008 | 43.43 | a | 51.17 | 51.26 | 54.79 | a | 62.57 | a | 61.93 | a | 70.68 | 69.65 | 69.08 | d | 59.58 | 54.60 | 45.03 | 57.81 | ||||||||
2009 | 47.35 | 49.54 | 50.32 | c | 56.80 | 61.77 | a | 64.46 | b | 71.48 | 69.77 | 69.30 | c | 60.06 | 52.20 | 43.42 | 58.04 | |||||||||
2010 | 50.61 | 53.07 | 55.13 | 55.46 | b | 57.77 | 63.07 | a | 68.23 | 68.65 | 67.03 | 60.26 | 49.50 | 48.39 | 58.10 | |||||||||||
2011 | 47.61 | 46.64 | 51.16 | 51.70 | 56.77 | 63.27 | 66.81 | 70.00 | 68.23 | 58.58 | 49.60 | 44.26 | 56.22 | |||||||||||||
2012 | 47.65 | 48.66 | 49.55 | 57.40 | 62.77 | 62.43 | 66.29 | 69.53 | a | 67.30 | 59.81 | 52.60 | 46.16 | 57.51 | ||||||||||||
2013 | 42.26 | 48.57 | 53.26 | 56.33 | 62.00 | 64.80 | 68.32 | 69.97 | 64.90 | 58.81 | 51.37 | 42.32 | 56.91 | |||||||||||||
2014 | 48.19 | 48.29 | 56.32 | 59.07 | 65.42 | 65.20 | 71.42 | 73.68 | 73.07 | 65.13 | 53.13 | 50.55 | 60.79 | |||||||||||||
2015 | 50.61 | 56.11 | 59.35 | 59.37 | 61.42 | 68.10 | 72.94 | 73.58 | 68.17 | 64.84 | 51.07 | 48.71 | 61.19 | |||||||||||||
2016 | 48.61 | 54.97 | 55.87 | 62.83 | 64.97 | 68.66 | a | 67.84 | 71.90 | 67.00 | 59.06 | 55.10 | 42.19 | 59.92 | ||||||||||||
2017 | 42.50 | a | 48.79 | 52.13 | 56.17 | 63.68 | 66.37 | 69.58 | 74.10 | a | 72.68 | e | 60.16 | 51.77 | 47.33 | a | 58.77 | |||||||||
2018 | 50.10 | 46.57 | 53.38 | g | 59.13 | 62.23 | 67.52 | a | 72.13 | 72.74 | 67.97 | 62.13 | 53.20 | 48.81 | 60.23 | a | ||||||||||
2019 | 48.77 | 44.14 | 56.00 | 57.20 | 64.39 | 68.40 | 70.42 | 72.83 | a | 68.20 | 58.35 | 52.00 | 47.42 | 59.01 | ||||||||||||
2020 | 49.26 | 50.28 | 52.48 | 59.10 | 63.81 | 66.20 | 70.45 | 72.13 | 71.97 | 60.71 | 54.13 | 53.89 | c | 60.37 | ||||||||||||
2021 | 47.71 | 47.00 | 52.10 | 61.25 | b | 60.77 | 69.14 | a | 70.06 | 70.71 | 70.00 | 58.77 | 53.67 | 50.32 | 59.29 | |||||||||||
2022 | 49.16 | 49.21 | 53.71 | 54.03 | 57.61 | 65.20 | 71.65 | 72.65 | 70.73 | 64.07 | b | 49.27 | 46.13 | 58.62 | ||||||||||||
2023 | 47.48 | 46.54 | 49.58 | 54.60 | 65.27 | a | 67.47 | 72.68 | 76.55 | 68.97 | 61.77 | ----- | z | ----- | z | 61.09 | b | |||||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 47.19 | 50.78 | 53.86 | 57.37 | 61.98 | 65.69 | 69.82 | 71.03 | 69.25 | 61.16 | 52.50 | 47.42 | 58.96 | |||||||||||||
S.D. | 2.99 | 2.97 | 2.74 | 2.51 | 2.66 | 2.26 | 2.12 | 2.01 | 2.24 | 2.14 | 2.26 | 2.67 | 1.17 | |||||||||||||
SKEW | -0.46 | -0.01 | 0.54 | 0.15 | 0.12 | -0.00 | -0.15 | 0.51 | 0.27 | 0.59 | -0.65 | 0.01 | 0.16 | |||||||||||||
MAX | 53.00 | 58.14 | 61.97 | 63.47 | 69.17 | 71.18 | 74.55 | 76.90 | 75.40 | 67.15 | 58.53 | 54.23 | 62.39 | |||||||||||||
MIN | 39.13 | 43.11 | 49.55 | 51.70 | 56.77 | 61.03 | 64.65 | 66.77 | 64.17 | 57.00 | 43.90 | 41.90 | 56.22 | |||||||||||||
YRS | 75 | 75 | 74 | 74 | 73 | 75 | 75 | 73 | 76 | 75 | 75 | 75 | 66 |