YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1948 | 51.87 | 44.31 | 44.52 | 49.13 | 50.74 | 52.63 | 56.55 | 57.16 | 61.93 | 52.89 | d | 53.47 | 44.74 | 51.66 | ||||||||||||
1949 | 38.42 | 42.68 | 44.06 | 50.62 | a | 51.50 | a | 54.90 | 56.23 | 61.29 | 62.13 | 56.29 | 61.80 | 49.58 | 52.46 | |||||||||||
1950 | 43.39 | 48.11 | 47.45 | 51.73 | 49.13 | 52.69 | a | 57.55 | b | 58.87 | 56.03 | 58.26 | 57.33 | 53.55 | 52.84 | |||||||||||
1951 | 47.29 | 46.04 | 47.29 | 47.27 | 48.40 | a | 51.77 | 60.26 | 57.55 | 60.20 | 57.52 | 51.30 | 45.94 | 51.73 | ||||||||||||
1952 | 44.77 | 47.86 | 44.16 | 48.53 | 51.94 | 51.43 | 60.71 | 61.26 | 64.20 | 55.97 | 50.17 | 48.03 | 52.42 | |||||||||||||
1953 | 52.00 | 48.71 | 46.61 | 45.87 | 49.94 | 51.64 | p | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 48.63 | g | |||||
1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1963 | 45.65 | 54.29 | 46.68 | 47.63 | 52.26 | 54.43 | 59.87 | 61.74 | 66.77 | 57.87 | 55.03 | 54.68 | 54.74 | |||||||||||||
1964 | 48.65 | 50.38 | 47.55 | 48.48 | a | 48.90 | 53.33 | 63.35 | 64.52 | 61.33 | 64.10 | 51.83 | 49.06 | 54.29 | ||||||||||||
1965 | 49.77 | 47.96 | 47.35 | 52.00 | 52.45 | 52.37 | 59.71 | 65.10 | 57.43 | 65.68 | 53.70 | 50.13 | 54.47 | |||||||||||||
1966 | 47.35 | 46.71 | 48.27 | a | 51.31 | a | 51.77 | 55.37 | 61.23 | 63.29 | 60.47 | 59.94 | 53.80 | 52.26 | 54.31 | |||||||||||
1967 | 53.68 | 55.07 | 46.84 | 42.77 | 49.66 | b | 51.07 | 62.58 | 66.55 | 61.40 | 62.42 | 56.47 | 47.16 | 54.64 | ||||||||||||
1968 | 48.77 | 52.21 | 49.50 | i | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 50.49 | j | ||
1969 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1970 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1971 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1972 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1973 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1974 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1975 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1976 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1978 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1981 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1982 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1983 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1984 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1985 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1986 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1987 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1988 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1989 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1990 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1991 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1992 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1993 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1994 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1995 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1996 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1997 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1998 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1999 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2000 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 57.00 | f | 57.94 | 63.39 | 61.13 | 54.19 | 49.57 | b | 52.71 | 56.49 | f | |||||
2001 | 47.32 | 46.39 | 49.00 | 47.23 | 54.52 | 59.31 | a | 56.73 | a | 60.84 | 60.17 | 57.19 | 52.57 | 47.48 | 53.23 | |||||||||||
2002 | 48.16 | 51.18 | 47.19 | 48.03 | a | 50.35 | 54.43 | 58.42 | 59.26 | 63.33 | 53.81 | 55.31 | a | 48.30 | a | 53.15 | ||||||||||
2003 | 55.70 | a | 48.67 | a | 50.60 | a | 47.60 | 51.53 | a | 53.97 | 62.33 | a | 64.90 | 59.93 | 62.13 | 50.37 | 48.48 | 54.68 | ||||||||
2004 | 47.70 | a | 46.69 | 52.23 | 50.57 | b | 55.53 | a | 54.23 | 59.87 | 58.71 | 62.93 | 54.45 | 50.57 | 50.10 | 53.63 | ||||||||||
2005 | 50.61 | 48.96 | 48.84 | 49.73 | 53.87 | 53.07 | 59.90 | 59.42 | 57.87 | 55.03 | 56.00 | 49.71 | 53.58 | |||||||||||||
2006 | 48.87 | 50.32 | 43.90 | 47.67 | 52.84 | 59.03 | a | 65.87 | 62.35 | e | 62.07 | 56.29 | 56.30 | 51.52 | 54.75 | |||||||||||
2007 | 48.13 | 49.29 | 51.55 | 49.30 | 51.76 | f | 55.03 | 59.94 | 63.65 | 59.73 | 57.42 | 52.80 | 46.81 | 53.97 | a | |||||||||||
2008 | 46.81 | 47.97 | 51.03 | 49.11 | b | 50.45 | b | 55.77 | d | 59.06 | 60.68 | 63.10 | 62.90 | 57.87 | 47.84 | 54.38 | ||||||||||
2009 | 54.58 | 48.43 | 48.13 | 49.10 | a | 53.29 | 53.90 | 61.19 | 62.16 | 65.27 | 57.55 | 54.27 | 48.14 | c | 54.67 | |||||||||||
2010 | 51.06 | 48.86 | 49.06 | 46.70 | 49.58 | 51.80 | 56.16 | 60.27 | a | 61.17 | 54.85 | d | 52.13 | 49.60 | a | 52.60 | ||||||||||
2011 | 51.45 | 45.07 | 47.47 | a | 49.63 | 51.74 | 52.48 | a | 60.16 | 61.35 | 58.87 | 59.19 | 52.00 | c | 49.77 | 53.27 | ||||||||||
2012 | 53.55 | 48.46 | a | 47.03 | a | 51.30 | 53.10 | b | 54.50 | 57.52 | 67.65 | 67.03 | 60.84 | 54.67 | 48.35 | 55.33 | ||||||||||
2013 | 48.68 | 47.71 | 50.45 | 50.65 | d | 53.83 | a | 57.13 | 59.29 | 61.52 | 64.33 | 56.06 | 55.13 | 52.19 | 54.75 | |||||||||||
2014 | 55.94 | 51.89 | 51.23 | 52.73 | 55.64 | c | 54.53 | 61.23 | 60.42 | 65.23 | 60.90 | 57.31 | d | 51.39 | 56.54 | |||||||||||
2015 | 53.71 | 52.93 | 55.52 | 53.37 | 50.74 | 58.03 | 58.90 | 63.84 | 66.07 | 64.00 | 53.97 | 49.16 | 56.69 | |||||||||||||
2016 | 48.45 | 57.03 | 50.71 | 53.59 | a | 50.65 | 56.96 | b | 60.35 | 61.32 | 62.23 | 59.23 | 59.19 | c | 50.13 | 55.82 | ||||||||||
2017 | 48.55 | 48.86 | 54.81 | 54.21 | k | 53.27 | a | 59.55 | a | 62.48 | 62.74 | 62.73 | 63.65 | 57.83 | 56.29 | 57.34 | a | |||||||||
2018 | 54.87 | 50.79 | 50.10 | 50.90 | a | 51.65 | 55.20 | 64.77 | 64.00 | a | 59.27 | 59.71 | 56.50 | 50.61 | 55.70 | |||||||||||
2019 | 49.90 | 44.36 | 49.30 | a | 51.67 | 50.77 | 55.24 | a | 61.59 | b | 63.47 | a | 63.83 | a | 60.90 | 54.67 | c | 50.40 | a | 54.67 | ||||||
2020 | 50.97 | 50.28 | 48.23 | 52.48 | a | 56.57 | a | 57.00 | a | 59.58 | 64.87 | 67.93 | 65.84 | 55.17 | 51.93 | c | 56.74 | |||||||||
2021 | 52.29 | 50.14 | 47.42 | 51.17 | 51.46 | c | 56.70 | 60.55 | k | 62.83 | b | 61.37 | 57.82 | i | 57.80 | 48.39 | 53.96 | b | ||||||||
2022 | 52.16 | 52.82 | 52.68 | 50.72 | e | 52.35 | 62.94 | m | 59.06 | 64.81 | 67.33 | 59.16 | 52.43 | 50.55 | 55.83 | a | ||||||||||
2023 | 48.16 | 47.11 | 46.10 | 49.90 | 50.90 | 52.93 | 65.81 | 64.23 | 59.67 | 62.32 | 58.14 | a | 53.71 | 54.91 | ||||||||||||
2024 | 50.77 | 48.93 | 49.26 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 49.65 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 49.72 | 49.10 | 48.65 | 49.65 | 51.86 | 54.71 | 60.19 | 62.23 | 62.19 | 59.05 | 54.63 | 49.96 | 54.23 | |||||||||||||
S.D. | 3.60 | 3.06 | 2.78 | 2.33 | 1.98 | 2.31 | 2.51 | 2.48 | 2.93 | 3.58 | 2.86 | 2.51 | 1.38 | |||||||||||||
SKEW | -0.64 | 0.40 | 0.46 | -0.63 | 0.50 | 0.49 | 0.51 | -0.07 | 0.15 | 0.20 | 0.24 | 0.39 | -0.03 | |||||||||||||
MAX | 55.94 | 57.03 | 55.52 | 53.59 | 56.57 | 59.55 | 65.87 | 67.65 | 67.93 | 65.84 | 61.80 | 56.29 | 56.74 | |||||||||||||
MIN | 38.42 | 42.68 | 43.90 | 42.77 | 48.40 | 51.07 | 56.16 | 57.16 | 56.03 | 52.89 | 49.57 | 44.74 | 51.66 | |||||||||||||
YRS | 36 | 36 | 35 | 33 | 33 | 32 | 33 | 34 | 34 | 33 | 34 | 34 | 29 |