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 | 52.95 | k | ----- | z |
1941 | 53.97 | 57.57 | 62.00 | 60.80 | 62.70 | a | 67.40 | 72.97 | 68.65 | 66.43 | 63.42 | 57.67 | 50.81 | 62.03 | ||||||||||||
1942 | 49.19 | 51.54 | 54.00 | 58.17 | 61.39 | 66.10 | a | 72.52 | 71.65 | 67.24 | a | 64.55 | 53.90 | 50.45 | b | 60.06 | ||||||||||
1943 | 47.10 | a | 57.07 | 54.35 | 58.77 | 59.84 | 64.43 | 70.29 | 70.00 | 73.86 | w | 62.55 | 58.47 | 51.52 | 59.49 | a | ||||||||||
1944 | 51.00 | 51.55 | 54.65 | 56.97 | 63.00 | a | 65.13 | 71.00 | 71.87 | 69.20 | 66.61 | 55.70 | 50.84 | 60.63 | ||||||||||||
1945 | 52.52 | 52.36 | 51.74 | 54.57 | 61.45 | 67.57 | 72.77 | 67.74 | 67.30 | 62.48 | 51.87 | 50.52 | 59.41 | |||||||||||||
1946 | 50.48 | 50.61 | 53.13 | 55.43 | 63.52 | 64.20 | 70.77 | a | 69.39 | 68.33 | 59.58 | 53.87 | 51.84 | 59.26 | ||||||||||||
1947 | 48.32 | 57.14 | 57.21 | b | 62.55 | a | 66.27 | a | 66.50 | 70.27 | a | 71.77 | 71.90 | a | 61.94 | 55.47 | 53.23 | 61.88 | ||||||||
1948 | 52.52 | 49.45 | 52.39 | 53.57 | 60.03 | 68.17 | a | 69.69 | b | 68.06 | 70.50 | 61.45 | 52.07 | 45.58 | 58.62 | |||||||||||
1949 | 41.90 | 47.39 | 53.68 | 59.17 | a | 63.85 | d | ----- | z | ----- | z | 70.92 | s | 69.41 | a | 59.52 | 61.37 | 49.19 | 56.17 | c | ||||||
1950 | 41.65 | 49.96 | 51.16 | 56.83 | 60.65 | 65.73 | 69.52 | 71.10 | 68.67 | 60.10 | 54.37 | 55.61 | 58.78 | |||||||||||||
1951 | 48.03 | 52.29 | 50.77 | 59.10 | 62.16 | 66.73 | 70.33 | a | 71.13 | 69.27 | 62.65 | 55.93 | 47.19 | 59.63 | ||||||||||||
1952 | 45.84 | 49.28 | 50.84 | 58.43 | 62.03 | 63.67 | 70.42 | 68.87 | 70.27 | 68.29 | 56.20 | 50.58 | 59.56 | |||||||||||||
1953 | 53.39 | 52.61 | 53.45 | 57.93 | 63.29 | 65.20 | 71.19 | 71.68 | 71.40 | 65.19 | 57.27 | 52.27 | a | 61.24 | ||||||||||||
1954 | 48.00 | 54.79 | 53.84 | 57.00 | 62.32 | 63.43 | 68.00 | 69.23 | a | 69.33 | 65.06 | 58.23 | 50.52 | 59.98 | ||||||||||||
1955 | 49.03 | 49.11 | 49.45 | 52.07 | 59.76 | b | 65.34 | a | 67.27 | a | 69.65 | 70.27 | 61.10 | 53.04 | b | 49.52 | 57.97 | |||||||||
1956 | 48.45 | 45.69 | 50.39 | 58.33 | 65.61 | 64.73 | 72.48 | 70.68 | 69.33 | 60.10 | 56.63 | 51.03 | 59.46 | |||||||||||||
1957 | 43.55 | 52.79 | 54.45 | 57.97 | 64.29 | 69.47 | 71.35 | 71.35 | 76.23 | 63.52 | 57.27 | 52.16 | 61.20 | |||||||||||||
1958 | 53.32 | 56.61 | 55.03 | 59.67 | 66.03 | 70.07 | 74.71 | 75.06 | 71.43 | 67.26 | 54.50 | 54.84 | 63.21 | |||||||||||||
1959 | 50.42 | 50.61 | 54.52 | 58.93 | 64.58 | 66.40 | 71.20 | a | 70.19 | 66.83 | 63.77 | 57.10 | 51.48 | 60.50 | ||||||||||||
1960 | 47.10 | 51.93 | 52.94 | 58.50 | 60.55 | 68.27 | 71.71 | 69.87 | 70.07 | 64.06 | 55.53 | 52.16 | 60.22 | |||||||||||||
1961 | 54.94 | 53.21 | 54.00 | 56.50 | 61.84 | 69.43 | 71.21 | b | 72.13 | 68.19 | c | 62.71 | 53.70 | 49.29 | 60.60 | |||||||||||
1962 | 48.87 | 53.21 | 52.77 | 57.87 | 58.00 | 65.30 | 68.55 | 70.87 | 68.90 | 64.65 | 56.80 | 54.10 | 59.99 | |||||||||||||
1963 | 47.45 | 59.32 | 53.47 | a | 55.67 | 62.87 | 64.53 | 68.84 | 70.10 | 72.40 | 65.03 | 55.17 | 53.90 | 60.73 | ||||||||||||
1964 | 50.65 | 53.48 | 52.39 | 55.83 | 59.48 | 64.07 | 68.97 | 69.00 | 68.00 | 65.29 | 52.83 | 47.06 | 58.92 | |||||||||||||
1965 | 49.32 | 51.43 | 58.94 | 57.67 | 58.74 | 64.70 | 69.94 | 71.48 | 69.87 | 66.61 | 56.70 | 48.64 | c | 60.34 | ||||||||||||
1966 | 50.06 | 51.93 | 53.65 | 58.83 | 62.71 | 66.89 | b | 69.61 | 73.06 | 72.80 | 64.45 | 56.73 | 52.19 | 61.08 | ||||||||||||
1967 | 50.68 | 53.57 | 51.77 | 54.80 | 63.94 | 68.50 | 72.68 | 74.13 | 75.03 | 64.19 | 57.20 | 48.45 | 61.25 | |||||||||||||
1968 | 49.32 | 59.21 | 55.84 | 55.00 | 61.94 | 66.67 | 69.71 | 69.61 | 70.23 | 61.81 | 55.30 | 47.52 | 60.18 | |||||||||||||
1969 | 43.23 | 49.25 | 56.52 | 56.07 | 67.19 | 67.23 | 68.42 | 70.35 | 67.93 | 62.45 | 57.60 | 51.45 | 59.81 | |||||||||||||
1970 | 49.32 | 58.11 | 56.19 | 54.27 | 63.29 | 67.03 | 69.87 | 71.06 | 67.53 | 61.84 | 55.57 | 47.58 | 60.14 | |||||||||||||
1971 | 47.90 | 50.86 | 50.94 | 56.00 | 61.03 | a | 62.33 | 66.68 | 72.23 | 68.83 | 61.61 | 53.33 | 46.19 | 58.16 | ||||||||||||
1972 | 45.55 | 50.38 | 55.23 | a | 54.33 | 63.20 | a | 67.20 | 73.63 | a | 73.29 | 67.76 | a | 64.37 | a | 55.07 | 45.77 | a | 59.65 | |||||||
1973 | 47.32 | 56.96 | 53.13 | 59.07 | 62.84 | 64.93 | 70.29 | 68.55 | 71.27 | 61.58 | 51.00 | 52.17 | a | 59.93 | ||||||||||||
1974 | 46.35 | 50.18 | 54.52 | 56.97 | 59.26 | 66.67 | 69.16 | 69.74 | 73.40 | 65.97 | 56.53 | 52.84 | 60.13 | |||||||||||||
1975 | 50.48 | 51.00 | 52.61 | 54.40 | 62.77 | 65.33 | 69.06 | 68.10 | 72.93 | 58.97 | 53.37 | 51.03 | 59.17 | |||||||||||||
1976 | 52.13 | 51.45 | 51.74 | 57.07 | 63.13 | 63.50 | 70.19 | 68.84 | 71.33 | 65.42 | 61.13 | 53.42 | 60.78 | |||||||||||||
1977 | 53.00 | 57.07 | 52.90 | 58.87 | 58.55 | 67.10 | 69.52 | 71.13 | 67.57 | 64.10 | 52.47 | 51.37 | a | 60.30 | ||||||||||||
1978 | 51.74 | 54.71 | 58.94 | 56.93 | 62.77 | 68.73 | 71.16 | 71.06 | 68.10 | 67.97 | 52.93 | 46.52 | 60.96 | |||||||||||||
1979 | 44.03 | 49.39 | 58.13 | 57.87 | 63.67 | a | 66.63 | 71.77 | 71.42 | 73.60 | 64.61 | 55.83 | 54.00 | 60.91 | ||||||||||||
1980 | 48.03 | 54.62 | 53.10 | 60.50 | 61.24 | b | 63.53 | 70.71 | 69.13 | 70.37 | 66.87 | 56.83 | 54.87 | 60.82 | ||||||||||||
1981 | 56.16 | 55.89 | 57.58 | 58.43 | 62.58 | 65.83 | 70.94 | 70.07 | b | 73.95 | j | 64.29 | 58.97 | 52.61 | 61.21 | a | ||||||||||
1982 | 48.45 | 52.86 | 55.39 | 58.90 | 65.23 | 66.17 | 70.35 | 72.45 | 72.00 | 65.45 | 55.20 | 51.68 | 61.18 | |||||||||||||
1983 | 53.90 | 55.82 | 58.10 | 63.80 | 66.29 | 68.30 | 71.87 | 75.42 | 72.67 | 66.65 | 56.17 | 46.53 | a | 62.96 | ||||||||||||
1984 | 53.81 | 56.38 | 59.06 | 57.93 | 62.97 | 66.40 | 73.47 | a | 75.29 | 71.90 | 60.52 | 54.53 | 48.03 | 61.69 | ||||||||||||
1985 | 53.45 | 52.71 | 54.45 | 59.53 | 64.42 | 70.83 | a | 74.48 | 73.37 | a | 69.30 | 62.81 | 46.97 | 53.87 | 61.35 | |||||||||||
1986 | 56.16 | 54.07 | 59.23 | a | 56.20 | 60.84 | 67.77 | 68.26 | 70.39 | 66.07 | 67.00 | 56.47 | 53.52 | 61.33 | ||||||||||||
1987 | 52.26 | 56.82 | 56.65 | 62.20 | 65.06 | 69.10 | 67.93 | a | ----- | z | 69.60 | 70.81 | 58.57 | 51.48 | 61.86 | a | ||||||||||
1988 | 51.32 | 56.66 | 56.52 | 58.30 | 62.06 | 65.37 | 70.57 | a | 73.27 | a | 69.40 | 64.52 | 56.24 | a | 52.58 | 61.40 | ||||||||||
1989 | 49.74 | 46.52 | a | 51.73 | a | 61.23 | 61.77 | 65.83 | a | 67.40 | a | 68.63 | a | 73.83 | 62.48 | 56.34 | a | 52.29 | 59.82 | |||||||
1990 | 52.42 | 50.64 | 57.10 | 57.33 | 60.86 | b | 64.07 | 70.68 | 71.43 | a | 68.90 | a | 61.06 | 55.77 | 44.03 | 59.52 | ||||||||||
1991 | 50.90 | a | 58.57 | 51.94 | ----- | z | ----- | z | 62.10 | ----- | z | ----- | z | 77.63 | c | 66.71 | 55.70 | 51.23 | 59.35 | d | ||||||
1992 | 53.23 | 59.34 | ----- | z | 60.40 | 65.61 | 68.20 | ----- | z | 72.19 | 67.47 | 64.81 | 54.63 | 47.74 | 61.36 | b | ||||||||||
1993 | 46.40 | a | 52.07 | 56.32 | 56.97 | 63.81 | 65.00 | 66.33 | a | 70.87 | 67.87 | 64.16 | 53.03 | 52.35 | 59.60 | |||||||||||
1994 | 54.26 | 51.14 | 57.61 | 56.90 | 61.87 | 63.50 | 68.35 | 70.58 | 70.77 | 61.48 | 50.83 | 50.43 | a | 59.81 | ||||||||||||
1995 | 52.39 | 56.18 | 56.74 | 56.97 | 60.55 | 66.21 | a | 69.13 | 70.16 | 69.40 | 63.00 | a | 58.73 | 52.13 | 60.97 | |||||||||||
1996 | 50.90 | 54.14 | a | 56.32 | 57.63 | 58.65 | 64.70 | 70.06 | 69.65 | 66.40 | 61.39 | 54.47 | 51.43 | a | 59.65 | |||||||||||
1997 | 51.32 | 53.22 | a | 53.77 | 57.83 | a | 67.58 | 68.47 | 70.68 | 72.77 | 71.30 | 60.94 | 58.33 | 52.19 | 61.53 | |||||||||||
1998 | 52.87 | 54.14 | 54.65 | 56.97 | 58.94 | 62.63 | 67.68 | 71.55 | 70.50 | 63.00 | 54.83 | 48.19 | 59.66 | |||||||||||||
1999 | 51.87 | 51.00 | 52.06 | 57.17 | 57.53 | a | 62.10 | a | 66.96 | d | 70.27 | e | 68.96 | d | 64.59 | d | 57.58 | f | 53.44 | d | 59.63 | a | ||||
2000 | 49.54 | c | 53.48 | d | 53.21 | b | 59.67 | i | 59.43 | c | 67.16 | e | 68.48 | d | 70.29 | c | 70.67 | f | 63.12 | g | 53.59 | c | 52.15 | d | 58.59 | c |
2001 | 53.24 | f | 53.95 | f | 54.60 | f | 53.42 | d | 63.00 | h | 63.40 | e | 67.33 | d | 68.19 | d | 67.00 | c | 62.08 | f | 57.09 | g | 50.77 | e | 61.69 | f |
2002 | 49.50 | e | 54.00 | d | 51.67 | g | 57.15 | d | 59.35 | e | 65.00 | f | 70.36 | f | 70.12 | g | 69.50 | d | 64.58 | g | 59.71 | b | 52.43 | c | 57.38 | e |
2003 | 56.81 | e | 55.12 | d | 55.19 | d | 55.44 | e | 62.04 | h | 67.88 | f | 71.21 | c | 72.19 | d | 70.54 | d | 65.60 | f | 53.93 | a | 51.50 | e | 60.21 | c |
2004 | 49.67 | d | 54.81 | c | 57.58 | e | 62.23 | d | 62.81 | d | 66.66 | a | 71.78 | d | 71.70 | d | 68.16 | e | 62.89 | d | 55.73 | h | 52.61 | c | 61.90 | a |
2005 | 51.89 | d | 57.23 | f | 58.64 | f | 56.81 | c | 64.07 | c | 65.04 | d | 70.58 | e | 71.63 | d | 68.54 | d | 61.21 | c | 55.85 | d | 52.48 | f | 62.85 | c |
2006 | 52.07 | c | 53.00 | c | 53.00 | e | 58.64 | e | 63.20 | f | 66.23 | d | 71.00 | e | 69.29 | c | 69.74 | c | 62.42 | g | 54.26 | c | 51.81 | d | 59.90 | b |
2007 | 50.00 | d | 52.46 | b | 54.91 | h | 57.36 | h | 60.96 | f | 62.44 | c | 70.28 | b | 70.88 | f | 67.88 | d | 61.75 | g | 56.88 | f | 50.12 | g | 60.61 | g |
2008 | 48.63 | d | 52.52 | f | 52.32 | f | 54.78 | g | 59.48 | h | 61.67 | f | 67.96 | d | 67.26 | d | 68.36 | e | 62.56 | d | 58.38 | d | 48.42 | e | 60.23 | e |
2009 | 53.36 | c | 55.23 | f | 51.19 | d | 55.67 | c | 61.77 | i | 64.96 | f | 67.23 | a | 68.32 | 70.10 | 61.32 | 55.93 | 49.81 | 59.21 | c | |||||
2010 | 54.00 | 56.14 | 55.77 | 55.53 | 57.32 | 62.30 | 67.55 | 66.35 | 67.67 | 62.58 | 53.00 | 51.13 | 59.11 | |||||||||||||
2011 | 52.16 | 49.18 | 52.39 | 52.50 | 57.55 | 63.13 | 67.19 | 69.45 | 68.27 | 61.45 | 53.27 | 51.13 | 58.14 | |||||||||||||
2012 | 51.68 | 51.76 | 50.84 | 56.73 | 59.42 | 61.93 | 66.97 | 68.81 | 67.30 | 61.19 | 55.17 | 49.19 | 58.42 | |||||||||||||
2013 | 49.16 | 51.25 | 54.10 | 56.03 | 61.13 | 65.67 | 69.48 | 69.06 | 66.07 | 60.65 | 55.80 | 48.45 | 58.90 | |||||||||||||
2014 | 54.68 | 50.32 | 55.65 | 59.67 | 64.26 | 65.57 | 70.61 | 71.48 | 72.37 | 65.71 | 56.40 | 54.26 | 61.75 | |||||||||||||
2015 | 56.65 | 58.79 | 58.81 | 58.43 | 61.10 | 66.86 | a | 71.68 | 71.90 | 67.87 | 65.58 | 55.33 | 51.29 | 62.02 | ||||||||||||
2016 | 51.68 | 57.03 | 57.32 | 62.27 | 64.29 | 66.83 | 69.26 | 69.62 | b | 69.07 | 61.13 | 58.40 | 46.87 | 61.15 | ||||||||||||
2017 | 48.10 | 50.21 | 52.35 | 55.17 | 60.37 | a | 63.90 | a | 71.23 | 73.00 | 70.77 | 63.68 | 55.33 | 52.32 | 59.70 | |||||||||||
2018 | 53.84 | 49.75 | 53.87 | 57.73 | 61.61 | 66.83 | 69.10 | 68.84 | 67.77 | 63.53 | a | 57.93 | 52.90 | 60.31 | ||||||||||||
2019 | 54.55 | 47.64 | 56.68 | 57.20 | 63.23 | 67.57 | 70.84 | 72.45 | b | 68.13 | 60.77 | 56.70 | 52.13 | 60.66 | ||||||||||||
2020 | 52.19 | 51.41 | 52.06 | 58.73 | 62.68 | 65.07 | 69.23 | 72.90 | 70.20 | 62.52 | 55.23 | 53.26 | 60.46 | |||||||||||||
2021 | 52.90 | 50.11 | 52.39 | 59.07 | 61.16 | 67.20 | 70.52 | 69.48 | 69.21 | a | 60.94 | 56.97 | 48.13 | 59.84 | ||||||||||||
2022 | 54.81 | 53.14 | 54.00 | 54.43 | 58.13 | 65.30 | 69.58 | 71.32 | 70.63 | 64.81 | 54.10 | 49.61 | 59.99 | |||||||||||||
2023 | 52.03 | 49.89 | 51.23 | 54.27 | 62.86 | b | 66.37 | 72.16 | 74.61 | 69.57 | 64.61 | 57.57 | 55.74 | 60.91 | ||||||||||||
2024 | 50.71 | 53.07 | 55.10 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 52.96 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 50.59 | 53.01 | 54.42 | 57.48 | 62.09 | 65.86 | 70.06 | 70.77 | 69.73 | 63.46 | 55.58 | 50.88 | 60.29 | |||||||||||||
S.D. | 3.25 | 3.15 | 2.55 | 2.31 | 2.36 | 2.01 | 1.85 | 1.89 | 2.26 | 2.32 | 2.33 | 2.50 | 1.10 | |||||||||||||
SKEW | -0.55 | 0.16 | 0.47 | 0.23 | 0.01 | 0.02 | 0.14 | 0.32 | 1.00 | 0.46 | -0.43 | -0.51 | 0.17 | |||||||||||||
MAX | 56.81 | 59.34 | 62.00 | 63.80 | 67.58 | 70.83 | 74.71 | 75.42 | 77.63 | 70.81 | 61.37 | 55.74 | 63.21 | |||||||||||||
MIN | 41.65 | 45.69 | 49.45 | 52.07 | 57.32 | 61.93 | 66.33 | 66.35 | 66.07 | 58.97 | 46.97 | 44.03 | 57.97 | |||||||||||||
YRS | 83 | 80 | 78 | 79 | 76 | 78 | 79 | 78 | 80 | 77 | 79 | 81 | 66 |