YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1960 | ----- | z | 45.30 | x | 55.43 | b | 59.93 | 66.97 | b | 78.07 | b | 76.74 | 73.95 | 72.72 | 61.11 | 55.38 | a | 43.97 | 64.43 | b | ||||||
1961 | 45.52 | 48.20 | 52.81 | 62.12 | 68.17 | e | 76.45 | 76.58 | 73.92 | 70.02 | a | 62.69 | 49.67 | a | 44.94 | 60.92 | ||||||||||
1962 | 43.89 | 48.82 | 47.08 | 63.16 | a | 65.48 | 74.07 | 75.63 | 77.73 | a | 72.68 | 65.15 | a | 57.14 | a | 47.89 | 61.56 | |||||||||
1963 | 44.90 | 51.18 | 53.16 | 58.92 | 70.35 | 73.35 | 77.56 | 72.94 | 71.33 | a | 65.55 | a | 52.92 | 45.87 | a | 61.50 | ||||||||||
1964 | 42.58 | 41.86 | 47.35 | 53.88 | 66.10 | 73.43 | 77.00 | 72.45 | 67.93 | 63.48 | 49.77 | 46.82 | 58.56 | |||||||||||||
1965 | 47.29 | 45.62 | 49.13 | 58.32 | 64.82 | a | 71.47 | 75.60 | 74.34 | 68.20 | 64.05 | a | 57.10 | 46.58 | a | 60.21 | ||||||||||
1966 | 41.48 | 42.61 | a | 54.05 | 60.05 | 69.06 | 75.28 | 77.16 | b | 72.21 | 68.84 | a | 61.97 | 55.92 | 46.02 | 60.39 | ||||||||||
1967 | 47.19 | 50.27 | 56.85 | a | 58.40 | 65.52 | 72.73 | 74.77 | c | 72.97 | 69.57 | 64.45 | 55.72 | 42.73 | 60.93 | |||||||||||
1968 | 45.97 | 51.34 | 50.13 | 55.02 | 63.73 | 75.62 | 73.98 | a | 71.02 | a | 69.97 | a | 65.42 | 50.67 | 45.03 | a | 59.82 | |||||||||
1969 | 49.52 | 46.32 | 48.97 | 60.47 | 67.60 | a | 74.75 | 76.73 | 77.21 | 72.27 | 62.23 | 51.53 | 47.76 | 61.28 | ||||||||||||
1970 | 44.95 | 50.41 | 48.85 | 55.37 | 68.18 | 75.38 | 77.27 | 73.26 | 68.68 | 58.69 | 54.12 | a | 48.87 | 60.34 | ||||||||||||
1971 | 46.85 | 47.00 | 53.79 | 57.98 | 64.19 | 74.57 | 78.06 | ----- | z | 70.93 | a | 57.42 | 51.57 | 44.89 | 58.84 | a | ||||||||||
1972 | 47.47 | 51.59 | 59.69 | 61.88 | 66.02 | 73.81 | a | 77.60 | 74.05 | 70.43 | 62.31 | 47.88 | a | 46.07 | b | 61.57 | ||||||||||
1973 | 42.66 | 46.64 | 46.52 | 55.02 | c | 66.55 | b | 75.73 | 75.84 | 75.22 | a | 73.02 | a | 65.13 | 55.45 | 48.08 | 60.49 | |||||||||
1974 | 46.34 | 47.35 | b | 54.93 | a | 59.46 | d | 68.19 | 80.48 | b | 74.57 | b | 73.23 | 69.95 | 60.97 | a | 52.77 | 42.52 | b | 60.90 | ||||||
1975 | 45.18 | l | 46.07 | 51.60 | a | 55.08 | 63.61 | 74.20 | 74.16 | 74.10 | 68.70 | 62.03 | 52.45 | 46.30 | a | 60.76 | a | |||||||||
1976 | 44.63 | a | 50.19 | 51.32 | 57.48 | 65.03 | 75.43 | 74.18 | 74.97 | 68.97 | 58.82 | 50.72 | 45.31 | 59.75 | ||||||||||||
1977 | 44.35 | 49.44 | a | 49.31 | 58.07 | 64.65 | 75.77 | 76.08 | 76.11 | 72.93 | 63.98 | 54.43 | 50.74 | 61.32 | ||||||||||||
1978 | 46.47 | 46.32 | 53.65 | 59.63 | 65.92 | 77.46 | c | 77.68 | 73.97 | 70.65 | 64.56 | 52.13 | 42.81 | 60.94 | ||||||||||||
1979 | 41.37 | 48.39 | 51.06 | 60.00 | 64.42 | 75.05 | 78.39 | 74.16 | 73.55 | 67.18 | 50.57 | 48.13 | 61.02 | |||||||||||||
1980 | 47.45 | 50.67 | 51.19 | 58.57 | 64.69 | 78.62 | 79.94 | 75.05 | 73.53 | 61.65 | 53.10 | 52.29 | 62.23 | |||||||||||||
1981 | 47.68 | 51.18 | 50.39 | 64.08 | 66.71 | 77.53 | 75.94 | 75.27 | 72.07 | 62.08 | 56.25 | 50.77 | 62.50 | |||||||||||||
1982 | 47.45 | b | 50.37 | a | 53.24 | 60.60 | 65.69 | b | 75.47 | a | 77.11 | 74.42 | 71.67 | a | 62.48 | 51.47 | 43.28 | a | 61.10 | |||||||
1983 | 45.16 | 47.68 | 49.79 | 53.72 | 64.98 | 72.35 | 76.92 | 74.33 | a | 72.27 | 61.65 | 51.62 | a | 48.63 | 59.92 | |||||||||||
1984 | 45.93 | b | 48.00 | a | 54.27 | 58.38 | 73.19 | b | 73.35 | 72.84 | b | 70.74 | 69.63 | 57.19 | 51.88 | 46.22 | a | 60.14 | ||||||||
1985 | 43.22 | b | 45.94 | a | 53.10 | 60.84 | b | 67.17 | b | 77.14 | a | 77.44 | 74.65 | a | 68.88 | a | 60.10 | 51.18 | 46.35 | a | 60.50 | |||||
1986 | 50.28 | b | 50.08 | c | 55.55 | c | 61.35 | c | 67.45 | b | 73.73 | b | 72.88 | a | 72.93 | b | 69.00 | a | 60.00 | 51.42 | 43.98 | a | 60.72 | |||
1987 | 44.66 | b | 45.22 | a | 48.71 | 58.70 | 62.94 | 74.29 | a | 76.48 | 71.17 | a | 68.10 | 65.20 | a | 51.38 | a | 43.98 | 59.24 | |||||||
1988 | 44.64 | c | 49.30 | b | 51.66 | b | 56.79 | a | 66.65 | 74.84 | b | 74.74 | 72.31 | 69.10 | 63.94 | 52.43 | a | 43.68 | a | 60.01 | ||||||
1989 | 43.13 | a | 51.02 | a | 57.73 | a | 65.27 | 69.02 | 75.83 | 78.05 | a | 73.03 | 72.18 | 61.37 | 53.13 | 45.15 | a | 62.08 | ||||||||
1990 | 44.24 | b | 44.94 | a | 53.48 | 60.95 | a | 66.44 | 80.12 | 74.02 | b | 70.94 | 70.08 | 62.16 | 53.40 | 44.15 | 60.41 | |||||||||
1991 | 43.24 | 49.48 | 48.52 | 58.20 | 65.48 | a | 71.38 | 75.21 | 73.11 | 68.88 | 63.79 | 50.65 | 43.13 | a | 59.26 | |||||||||||
1992 | 40.39 | 47.31 | 50.83 | a | 60.48 | 64.47 | 74.07 | 74.61 | 72.66 | b | 71.82 | 64.77 | 47.15 | 44.76 | 59.44 | |||||||||||
1993 | 46.23 | 46.11 | 52.34 | 59.97 | 67.15 | 74.95 | 74.66 | 73.39 | 70.35 | 62.11 | 51.16 | a | 46.05 | b | 60.37 | |||||||||||
1994 | 47.08 | a | 47.20 | a | 52.95 | b | 59.43 | 66.42 | 78.91 | a | 77.40 | 76.21 | 70.62 | 61.45 | 50.72 | a | 45.56 | 61.16 | ||||||||
1995 | 44.38 | a | 50.62 | 53.55 | a | 57.17 | 63.15 | a | 72.81 | a | 77.23 | 75.69 | 71.17 | 65.00 | 55.72 | 47.77 | a | 61.19 | ||||||||
1996 | 48.50 | 51.93 | a | 53.26 | 61.30 | 71.77 | 78.67 | 76.18 | 73.31 | 68.25 | 61.77 | a | 54.12 | b | 48.69 | 62.31 | ||||||||||
1997 | 44.06 | 46.71 | 56.73 | 56.47 | 69.50 | 74.25 | 77.03 | 74.37 | 73.57 | a | 60.98 | 53.33 | 41.12 | a | 60.68 | |||||||||||
1998 | 46.23 | 42.89 | 50.79 | b | 55.05 | 65.63 | 74.52 | a | 75.52 | 74.90 | 73.10 | 63.31 | b | 54.97 | 46.37 | a | 60.27 | |||||||||
1999 | 48.62 | a | 51.83 | a | 55.18 | 56.88 | 67.15 | a | 73.22 | 72.50 | 72.92 | 71.12 | 64.37 | 57.25 | 44.63 | 61.31 | ||||||||||
2000 | 49.94 | 52.05 | 51.92 | 62.68 | 72.12 | a | 74.92 | 76.17 | a | 72.90 | b | 73.00 | 59.32 | 45.23 | b | 47.47 | 61.48 | |||||||||
2001 | 41.26 | 46.48 | 51.74 | 58.70 | 69.18 | 75.42 | e | 73.89 | 73.61 | 72.17 | 63.76 | 54.03 | 43.65 | a | 60.32 | |||||||||||
2002 | 45.58 | 48.15 | a | 53.00 | 64.12 | a | 67.90 | a | 78.09 | g | 76.69 | d | 74.42 | 71.23 | 60.85 | 53.61 | c | 42.53 | a | 59.83 | a | |||||
2003 | 50.81 | 47.83 | d | 51.05 | b | 58.35 | 68.61 | 75.30 | 79.35 | 74.88 | b | 71.57 | 65.21 | 52.90 | 46.34 | b | 61.85 | |||||||||
2004 | 45.00 | 43.41 | 56.87 | 56.64 | a | 68.37 | a | 74.12 | a | 75.27 | 73.71 | 69.70 | g | 60.90 | 47.58 | 45.34 | 58.84 | a | ||||||||
2005 | 46.47 | a | 46.43 | 51.05 | a | 59.05 | 67.69 | b | 74.16 | b | 79.13 | 72.27 | a | 72.81 | a | 62.55 | 56.37 | c | 47.90 | e | 61.32 | |||||
2006 | 48.13 | 50.76 | a | 52.03 | a | 61.25 | p | 69.42 | e | 76.23 | b | 72.25 | w | 71.18 | t | 67.27 | 58.58 | y | 52.38 | v | 44.23 | t | 60.64 | f | ||
2007 | 39.72 | d | 47.52 | c | 54.52 | b | 59.32 | b | 67.50 | a | 76.05 | a | 74.46 | f | 73.59 | b | 70.95 | a | 63.65 | e | 57.18 | b | 44.34 | b | 59.49 | a |
2008 | 44.27 | 48.95 | a | 53.08 | e | 60.94 | e | 64.95 | c | 77.02 | a | 73.36 | b | 71.47 | 68.43 | c | 62.67 | d | 54.02 | c | 46.81 | d | 60.50 | |||
2009 | 48.74 | b | 50.27 | 55.50 | 59.59 | b | 69.62 | b | 72.52 | a | 77.08 | 75.79 | 70.88 | a | 60.60 | 54.80 | c | 42.31 | r | 63.22 | a | |||||
2010 | 44.17 | a | 44.80 | a | 50.76 | 58.03 | a | 64.21 | b | 76.06 | f | 76.22 | a | 74.69 | b | 71.93 | a | 62.70 | c | 51.95 | b | 50.65 | g | 59.94 | b | |
2011 | 44.62 | g | 45.23 | d | 57.04 | f | 63.38 | b | 65.67 | e | 75.64 | s | 75.83 | g | 76.75 | g | 73.60 | e | 65.98 | h | 51.11 | g | 43.40 | a | 58.26 | g |
2012 | 48.74 | h | 48.96 | b | 53.95 | b | 63.54 | d | 70.26 | f | 78.55 | b | 73.30 | c | 74.73 | e | 71.52 | e | 66.15 | g | 56.98 | h | 47.12 | b | 63.96 | d |
2013 | 41.78 | b | 44.52 | e | 57.31 | e | 60.64 | e | 66.55 | k | 80.04 | q | 73.74 | l | 72.40 | j | 69.75 | 61.17 | j | 53.16 | a | 44.86 | b | 53.14 | e | |
2014 | 50.03 | a | 54.60 | d | 55.22 | a | 60.61 | c | 68.00 | r | 77.97 | j | 74.48 | c | 71.58 | 69.60 | 63.91 | b | 52.46 | d | 47.54 | c | 60.00 | b | ||
2015 | 46.06 | 53.13 | b | 55.35 | 58.98 | 63.34 | b | 76.37 | 72.82 | 75.29 | 70.90 | a | 64.03 | b | 52.28 | 44.58 | a | 61.10 | ||||||||
2016 | 43.69 | 52.62 | a | 57.35 | a | 59.00 | 65.40 | a | 77.83 | a | 77.05 | 71.73 | 69.07 | c | 67.00 | a | 54.90 | 50.45 | b | 62.17 | ||||||
2017 | 45.71 | b | 52.11 | 59.50 | a | 62.32 | b | 67.35 | 78.72 | 74.38 | a | 73.92 | 71.53 | 68.28 | a | 61.52 | 49.90 | a | 63.77 | |||||||
2018 | 51.07 | c | 50.93 | 55.63 | a | 65.12 | 69.76 | 77.50 | a | 77.35 | 74.50 | 73.29 | a | 61.13 | 52.34 | a | 47.00 | k | 64.42 | a | ||||||
2019 | 49.67 | y | 45.27 | 53.97 | 61.14 | a | 61.87 | a | 75.57 | 77.28 | a | 76.66 | 70.79 | a | 62.91 | b | 54.59 | a | 46.72 | b | 62.43 | a | ||||
2020 | 47.76 | b | 48.38 | 52.89 | ----- | z | 71.72 | v | 76.48 | 78.44 | 78.95 | 72.63 | 67.57 | a | 58.02 | e | 46.29 | c | 62.74 | b | ||||||
2021 | 46.15 | d | 49.85 | e | 52.82 | 61.92 | 68.87 | 78.60 | e | 74.24 | 73.50 | 70.50 | b | 63.92 | f | 58.21 | d | 51.05 | a | 62.34 | a | |||||
2022 | 46.76 | 47.02 | 54.02 | a | 63.59 | a | 70.28 | a | 76.82 | 75.48 | 72.10 | 70.79 | b | 59.68 | 50.07 | a | 47.00 | d | 61.13 | |||||||
2023 | 45.00 | a | 46.04 | 51.72 | a | 60.17 | 66.15 | 74.75 | 82.31 | 76.79 | 75.47 | a | 66.82 | a | 55.88 | 50.27 | a | 62.61 | ||||||||
2024 | 45.11 | 49.48 | 51.65 | 58.61 | h | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 48.75 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 45.65 | 48.33 | 52.84 | 59.55 | 66.81 | 75.53 | 76.11 | 73.94 | 70.90 | 62.82 | 53.14 | 46.19 | 60.91 | |||||||||||||
S.D. | 2.56 | 2.77 | 2.88 | 2.71 | 2.37 | 2.07 | 1.92 | 1.70 | 1.77 | 2.41 | 2.92 | 2.43 | 0.99 | |||||||||||||
SKEW | -0.02 | -0.15 | 0.10 | -0.05 | 0.41 | 0.31 | 0.36 | 0.44 | 0.09 | -0.03 | 0.02 | 0.39 | 0.27 | |||||||||||||
MAX | 51.07 | 54.60 | 59.69 | 65.27 | 73.19 | 80.48 | 82.31 | 78.95 | 75.47 | 68.28 | 61.52 | 52.29 | 63.77 | |||||||||||||
MIN | 39.72 | 41.86 | 46.52 | 53.72 | 61.87 | 71.38 | 72.50 | 70.74 | 67.27 | 57.19 | 45.23 | 41.12 | 58.56 | |||||||||||||
YRS | 60 | 64 | 64 | 62 | 60 | 59 | 60 | 60 | 63 | 59 | 61 | 60 | 47 |