YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1953 | ----- | z | ----- | z | ----- | z | ----- | z | 59.80 | k | 63.07 | 69.81 | 70.32 | 69.67 | 63.68 | 53.93 | 49.55 | 62.86 | e | |||||||
1954 | 43.19 | 49.96 | 51.87 | 54.20 | 62.65 | 62.83 | 66.00 | 64.77 | 65.90 | 61.13 | 55.07 | 47.03 | 57.05 | |||||||||||||
1955 | 44.90 | 46.54 | 46.81 | 52.00 | 56.52 | 61.07 | b | 63.23 | 66.77 | 66.17 | 58.52 | 48.22 | c | 45.03 | 54.65 | |||||||||||
1956 | 44.97 | 42.55 | 48.74 | 58.03 | 63.71 | 61.77 | 68.27 | a | 68.26 | 66.43 | 57.61 | 51.60 | 46.19 | 56.51 | ||||||||||||
1957 | 40.16 | 47.61 | 51.26 | 56.23 | 62.48 | 65.50 | 67.71 | 68.61 | 72.83 | 60.65 | 52.80 | 49.19 | 57.92 | |||||||||||||
1958 | 49.90 | 53.39 | 53.10 | 57.30 | 65.58 | 68.45 | a | 71.10 | 71.68 | 67.90 | 62.13 | 51.10 | 50.52 | 60.18 | ||||||||||||
1959 | 46.48 | 46.86 | 50.71 | 57.07 | 61.61 | 65.00 | 69.71 | 67.65 | 64.17 | 60.52 | 53.13 | 47.26 | 57.51 | |||||||||||||
1960 | 44.39 | 49.03 | 50.29 | 54.97 | 57.97 | 64.63 | 69.74 | 67.90 | 68.27 | 60.45 | 52.10 | 47.84 | 57.30 | |||||||||||||
1961 | 51.58 | 50.18 | 51.42 | 53.90 | 60.26 | 67.90 | 68.03 | b | 72.13 | 67.20 | 58.84 | 50.27 | 45.90 | 58.13 | ||||||||||||
1962 | 45.55 | 50.07 | 49.81 | 55.57 | 56.23 | 62.73 | 65.00 | 67.94 | 67.20 | 60.13 | 52.40 | 47.87 | 56.71 | |||||||||||||
1963 | 41.84 | 55.96 | 52.06 | 54.50 | 62.10 | a | 63.17 | 67.74 | 67.87 | 69.57 | 60.42 | 51.23 | 50.00 | 58.04 | ||||||||||||
1964 | 49.06 | 51.10 | 52.42 | 53.50 | 58.87 | 64.37 | 67.39 | 69.77 | 66.93 | 63.71 | 51.30 | 44.03 | 57.71 | |||||||||||||
1965 | 46.68 | 49.64 | 58.32 | 58.23 | 57.61 | 64.10 | 69.03 | 70.06 | 65.57 | 63.19 | 54.37 | 45.35 | 58.51 | |||||||||||||
1966 | 47.39 | 49.50 | 51.77 | 56.20 | 60.48 | 64.66 | a | 66.35 | 70.10 | 70.07 | 60.68 | 54.03 | 49.58 | 58.40 | ||||||||||||
1967 | 48.97 | 50.71 | 49.68 | 54.37 | 61.55 | 66.97 | 68.97 | a | 73.61 | 72.27 | 60.32 | 54.13 | 45.26 | 58.90 | ||||||||||||
1968 | 46.00 | 54.83 | 53.26 | 53.77 | 60.94 | 63.43 | 67.80 | a | 67.87 | 66.60 | 57.71 | 52.80 | 43.74 | 57.40 | ||||||||||||
1969 | 38.32 | 47.29 | 54.42 | 54.70 | 63.37 | a | 66.07 | a | 67.52 | 68.39 | 64.53 | 60.58 | 54.43 | 49.71 | 57.44 | |||||||||||
1970 | 46.71 | 54.04 | 53.58 | 54.30 | 62.19 | 67.34 | a | 69.16 | 69.58 | 68.03 | 59.58 | 51.37 | 43.39 | 58.27 | ||||||||||||
1971 | 42.84 | 46.71 | 46.35 | 52.83 | 57.74 | 58.70 | 63.19 | 69.10 | 64.30 | 58.19 | 50.30 | 43.32 | 54.47 | |||||||||||||
1972 | 43.97 | 49.38 | 52.16 | 50.63 | 61.87 | 64.37 | 68.83 | a | 71.29 | 64.33 | 58.77 | 51.43 | 41.74 | 56.57 | ||||||||||||
1973 | 43.74 | 51.00 | 50.90 | 56.90 | 61.27 | a | 64.17 | 68.16 | 64.39 | 69.00 | 58.16 | 49.13 | 49.29 | 57.18 | ||||||||||||
1974 | 43.94 | 47.82 | 52.81 | 58.03 | 59.10 | 64.47 | 66.77 | 68.00 | 73.00 | 61.29 | 52.20 | 48.48 | 57.99 | |||||||||||||
1975 | 44.90 | 46.07 | 49.16 | 51.27 | 58.84 | 60.77 | 66.65 | 64.39 | 72.80 | 56.03 | 51.37 | 47.26 | 55.79 | |||||||||||||
1976 | 47.23 | 45.90 | 47.65 | 54.97 | 58.97 | 60.60 | 67.52 | 64.74 | 69.57 | 64.32 | 56.33 | 51.74 | 57.46 | |||||||||||||
1977 | 46.03 | 52.89 | 49.48 | 57.30 | 56.10 | 61.33 | 65.26 | 68.26 | 64.83 | 58.23 | 47.47 | 46.68 | 56.15 | |||||||||||||
1978 | 48.45 | 49.21 | 55.94 | 56.13 | 59.71 | 66.67 | 67.65 | 68.00 | a | 64.43 | 64.68 | 48.43 | 41.13 | 57.54 | ||||||||||||
1979 | 40.68 | 45.57 | 55.42 | 56.97 | 62.90 | 64.77 | 69.23 | 68.94 | 71.40 | 62.29 | 51.77 | 50.55 | 58.37 | |||||||||||||
1980 | 43.45 | 49.00 | 50.26 | 58.33 | 58.23 | 61.80 | 66.60 | a | 63.74 | 64.93 | 61.61 | 53.60 | 49.42 | 56.75 | ||||||||||||
1981 | 52.06 | 51.14 | 55.71 | 55.27 | 59.48 | 62.23 | 65.68 | 69.80 | a | 67.13 | 59.13 | 53.77 | 47.65 | 58.25 | ||||||||||||
1982 | 44.19 | 47.57 | 50.84 | 53.23 | 59.81 | 63.21 | a | 64.84 | 68.19 | 68.37 | 60.61 | 50.20 | 47.19 | 56.52 | ||||||||||||
1983 | 50.06 | 52.86 | 54.81 | 58.47 | 62.35 | 64.20 | 67.61 | 70.03 | 65.37 | 58.58 | 52.73 | 42.39 | 58.29 | |||||||||||||
1984 | 48.41 | b | 50.69 | 55.39 | 54.77 | 58.23 | 61.37 | 67.81 | 68.87 | 66.97 | 56.06 | 51.23 | 44.32 | 57.01 | ||||||||||||
1985 | 45.84 | 46.61 | 50.16 | 55.40 | 59.83 | a | 64.48 | a | 69.55 | 69.52 | 65.13 | 58.32 | 43.37 | 44.94 | 56.10 | |||||||||||
1986 | 51.03 | 48.11 | 54.74 | 53.60 | 59.45 | 66.30 | 64.46 | e | 68.61 | 64.37 | 63.10 | 53.04 | b | 48.13 | h | 58.80 | a | |||||||||
1987 | 47.28 | b | 53.00 | 55.71 | 60.07 | 62.16 | l | 66.67 | i | 66.32 | i | 69.05 | j | 70.17 | l | 69.05 | j | 56.19 | i | 47.75 | k | 54.01 | h | |||
1988 | 46.97 | b | 51.93 | 52.97 | 57.33 | 61.00 | 63.57 | 67.20 | a | 68.29 | 65.60 | 61.74 | 52.13 | 48.35 | 58.09 | |||||||||||
1989 | 46.77 | 43.25 | 48.90 | 60.50 | 60.74 | 65.10 | 66.45 | 66.60 | a | 72.23 | 60.32 | 52.80 | 48.87 | 57.71 | ||||||||||||
1990 | 48.61 | 47.54 | 54.61 | 56.87 | 59.10 | 63.47 | 69.65 | 69.74 | 69.23 | 57.58 | 52.57 | 41.65 | 57.55 | |||||||||||||
1991 | 46.06 | 54.86 | 49.97 | 54.07 | 56.32 | 60.37 | 67.81 | 65.13 | 70.03 | 60.32 | 51.87 | 48.42 | 57.10 | |||||||||||||
1992 | 49.61 | 53.45 | 57.84 | 57.93 | 64.77 | 65.07 | 67.84 | 68.81 | 65.53 | 60.19 | 51.43 | 44.77 | 58.94 | |||||||||||||
1993 | 44.06 | 50.32 | 54.13 | 55.00 | 64.35 | 64.07 | 64.58 | 68.50 | a | 66.20 | 61.48 | 49.90 | 46.45 | 57.42 | ||||||||||||
1994 | 50.39 | 46.64 | 56.16 | 57.13 | 62.32 | 63.57 | 65.77 | 69.94 | 69.27 | 60.52 | 48.70 | 46.81 | 58.10 | |||||||||||||
1995 | 51.39 | 53.14 | 54.81 | 57.00 | 60.84 | 64.36 | b | 69.10 | 67.81 | 70.20 | 60.81 | 55.27 | 48.94 | 59.47 | ||||||||||||
1996 | 46.13 | 52.00 | 54.71 | 56.63 | 57.90 | 64.20 | 71.50 | a | 69.45 | 64.40 | 59.81 | 50.50 | 46.32 | 57.80 | ||||||||||||
1997 | 47.65 | 50.21 | 51.87 | 56.67 | 65.32 | 65.31 | a | 69.42 | 71.97 | 70.87 | ----- | z | 55.77 | 49.10 | 59.47 | a | ||||||||||
1998 | 47.68 | 52.39 | 53.94 | 57.63 | 59.71 | 61.63 | 66.61 | 69.48 | 68.60 | 62.13 | 52.63 | 45.52 | 58.16 | |||||||||||||
1999 | 47.61 | 48.11 | 51.06 | 56.33 | 57.77 | 61.43 | 64.71 | 67.32 | 67.97 | 60.42 | 53.43 | 49.33 | a | 57.13 | ||||||||||||
2000 | 46.39 | 50.69 | 51.74 | 58.07 | 59.42 | 64.34 | a | 66.45 | 66.00 | 67.40 | 59.74 | 49.93 | 47.71 | 57.32 | ||||||||||||
2001 | 48.48 | 49.50 | 52.90 | 53.13 | 59.55 | 61.30 | 63.61 | 65.84 | 64.33 | 57.19 | 52.30 | 47.19 | 56.28 | |||||||||||||
2002 | 46.42 | 48.75 | 48.06 | 53.87 | 57.00 | 62.97 | 67.19 | 66.90 | 65.73 | 58.39 | 54.70 | 48.35 | 56.53 | |||||||||||||
2003 | 52.06 | 49.86 | 51.87 | 53.67 | 59.32 | 65.76 | a | 68.87 | 68.74 | 67.33 | 60.16 | 48.77 | 46.65 | 57.75 | ||||||||||||
2004 | 45.48 | 50.72 | 53.84 | 60.53 | 60.39 | 64.41 | a | 69.29 | 68.61 | 64.40 | 58.65 | 51.33 | 48.52 | 58.01 | ||||||||||||
2005 | 47.87 | 52.32 | 54.87 | 54.67 | 61.73 | a | 64.17 | 68.03 | 67.87 | 64.57 | 58.74 | 50.13 | 47.74 | 57.73 | ||||||||||||
2006 | 49.61 | 49.46 | 51.03 | 56.30 | 61.93 | a | 66.30 | 69.19 | 66.84 | 68.73 | 60.39 | 52.03 | 49.39 | 58.43 | ||||||||||||
2007 | 48.26 | 51.29 | 53.48 | 56.77 | 62.00 | 64.60 | 70.83 | a | 70.13 | 66.43 | 60.03 | 53.13 | 47.52 | b | 58.71 | |||||||||||
2008 | 47.00 | 51.86 | 50.97 | 54.33 | 58.80 | a | 59.30 | 64.94 | 66.19 | 66.50 | 58.10 | 53.60 | 43.32 | 56.24 | ||||||||||||
2009 | 46.84 | 48.57 | 48.10 | 54.50 | 59.19 | 65.20 | 68.06 | 66.74 | 68.53 | 57.19 | 51.40 | 44.61 | 56.58 | |||||||||||||
2010 | 50.74 | 52.82 | 53.97 | 54.30 | 57.03 | 61.20 | 62.57 | a | 64.27 | a | 65.00 | 60.06 | 48.53 | 47.84 | 56.53 | |||||||||||
2011 | 46.58 | 45.61 | 50.06 | 51.53 | 57.19 | 62.53 | 65.74 | 67.29 | 68.07 | 59.03 | 50.33 | 45.97 | 55.83 | |||||||||||||
2012 | 46.52 | 48.83 | 49.26 | 55.63 | 59.65 | 60.90 | 64.87 | 69.10 | 67.90 | 59.10 | 52.73 | 46.58 | 56.75 | |||||||||||||
2013 | 44.55 | 48.50 | 51.94 | 54.17 | 59.63 | a | 65.57 | 66.16 | 68.26 | 66.60 | 59.84 | 52.10 | 43.10 | 56.70 | ||||||||||||
2014 | 48.77 | 46.39 | 53.26 | 57.07 | 63.58 | 63.53 | 67.83 | a | 69.71 | 71.00 | 63.90 | 53.07 | 50.23 | 59.03 | ||||||||||||
2015 | 52.06 | 56.46 | 56.97 | 57.57 | 59.74 | 66.93 | 71.39 | 71.74 | 66.93 | 63.32 | 52.37 | 47.61 | 60.26 | |||||||||||||
2016 | 48.97 | 53.17 | 54.19 | 61.47 | 63.19 | 65.33 | 66.42 | 70.55 | 65.70 | 58.58 | 55.10 | 43.84 | 58.88 | |||||||||||||
2017 | 44.52 | 47.18 | 50.16 | 54.80 | 59.81 | 64.34 | a | 68.03 | 71.06 | 69.33 | 61.29 | 51.37 | 46.81 | 57.39 | ||||||||||||
2018 | 49.65 | 46.36 | 52.77 | 56.77 | 61.74 | 64.90 | 68.77 | 69.32 | 67.07 | 61.39 | 55.23 | 49.45 | 58.62 | |||||||||||||
2019 | 51.55 | 45.00 | 57.19 | 55.93 | 61.61 | 64.67 | 68.74 | 70.61 | 65.30 | 57.58 | 52.70 | 47.32 | 58.18 | |||||||||||||
2020 | 48.68 | 48.79 | 49.16 | 56.23 | 62.84 | 63.37 | 67.03 | 69.03 | 69.93 | 59.35 | 51.53 | 49.61 | 57.96 | |||||||||||||
2021 | 48.35 | 45.46 | 50.65 | 56.73 | 59.13 | 67.04 | c | 68.58 | 69.48 | 67.53 | 59.26 | 53.80 | 45.29 | 57.61 | ||||||||||||
2022 | 49.84 | 50.68 | 52.55 | 53.90 | 57.50 | a | 64.04 | b | 69.55 | 73.00 | 71.33 | 65.68 | 51.90 | 48.65 | 59.05 | |||||||||||
2023 | 50.71 | 48.04 | 51.55 | 52.97 | a | 62.72 | b | 65.17 | 70.52 | 74.65 | 67.00 | 61.00 | 51.63 | 50.50 | a | 58.87 | ||||||||||
2024 | 47.16 | 49.45 | 52.39 | 55.06 | n | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 49.67 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 47.05 | 49.61 | 52.27 | 55.73 | 60.33 | 63.89 | 67.51 | 68.63 | 67.54 | 60.18 | 51.96 | 46.98 | 57.58 | |||||||||||||
S.D. | 2.91 | 2.92 | 2.64 | 2.19 | 2.29 | 2.03 | 2.02 | 2.20 | 2.42 | 2.04 | 2.16 | 2.44 | 1.11 | |||||||||||||
SKEW | -0.46 | 0.07 | 0.07 | 0.17 | 0.19 | -0.25 | -0.33 | 0.04 | 0.52 | 0.44 | -0.90 | -0.47 | -0.23 | |||||||||||||
MAX | 52.06 | 56.46 | 58.32 | 61.47 | 65.58 | 68.45 | 71.50 | 74.65 | 73.00 | 65.68 | 56.33 | 51.74 | 60.26 | |||||||||||||
MIN | 38.32 | 42.55 | 46.35 | 50.63 | 56.10 | 58.70 | 62.57 | 63.74 | 64.17 | 56.03 | 43.37 | 41.13 | 54.47 | |||||||||||||
YRS | 71 | 71 | 71 | 70 | 69 | 70 | 70 | 70 | 70 | 69 | 70 | 69 | 67 |