YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1946 | ----- | z | ----- | z | ----- | z | 69.60 | t | 67.73 | 80.57 | 80.48 | 78.95 | 77.05 | 62.19 | 51.92 | 52.84 | 68.97 | d | ||||||||
1947 | 45.76 | 53.59 | 55.18 | 60.27 | 71.45 | 77.00 | 82.65 | a | 79.52 | 77.80 | 67.27 | a | 51.48 | 45.57 | b | 63.96 | ||||||||||
1948 | 49.27 | a | 47.93 | a | 50.50 | 63.79 | a | 69.52 | 78.28 | a | 82.32 | 78.81 | 76.83 | 66.21 | 50.45 | 49.93 | b | 63.65 | ||||||||
1949 | 40.28 | h | 47.80 | 55.27 | 62.92 | 67.87 | 77.60 | 80.90 | 78.87 | 78.15 | 63.37 | 60.93 | 48.68 | 65.67 | a | |||||||||||
1950 | 48.61 | 53.44 | a | 57.05 | a | 64.32 | 67.05 | a | 77.50 | a | 78.82 | 79.50 | 74.32 | 72.52 | a | 60.27 | 53.98 | 65.62 | ||||||||
1951 | 47.66 | 51.18 | 54.83 | b | 60.72 | 68.65 | 74.63 | 83.13 | 79.40 | 77.23 | 67.48 | 56.28 | a | 49.42 | 64.22 | |||||||||||
1952 | 49.95 | 46.95 | a | 47.89 | 59.33 | 70.58 | a | 77.82 | e | 82.38 | c | 81.88 | b | 78.68 | 71.15 | 53.27 | 47.29 | 63.93 | ||||||||
1953 | 51.10 | a | 49.15 | a | 56.13 | 60.17 | a | 63.61 | 78.88 | 82.27 | 80.94 | 77.67 | 65.98 | 58.08 | 45.60 | 64.13 | ||||||||||
1954 | 51.23 | 56.39 | 55.26 | 65.38 | a | 69.40 | 76.72 | 80.98 | 76.53 | 77.45 | 68.81 | 58.34 | a | 51.74 | 65.69 | |||||||||||
1955 | 44.43 | a | 46.71 | 56.32 | 59.86 | a | 67.26 | 77.45 | 79.50 | a | 77.05 | 74.47 | 68.73 | a | 55.65 | 52.84 | 63.36 | |||||||||
1956 | 52.60 | 45.36 | 55.53 | 58.98 | 70.40 | 80.25 | 79.87 | 78.31 | 78.68 | 66.05 | 54.12 | 48.94 | 64.09 | |||||||||||||
1957 | 51.21 | 58.21 | 55.15 | 59.73 | 64.94 | 81.10 | 84.95 | 80.18 | 75.57 | 64.65 | 51.10 | 51.29 | 64.84 | |||||||||||||
1958 | 47.05 | 52.70 | 50.50 | 59.78 | 73.66 | 78.85 | 76.44 | e | 72.08 | 75.28 | a | 67.74 | 55.70 | 53.67 | a | 63.62 | ||||||||||
1959 | 51.90 | 49.80 | e | 54.86 | c | 64.04 | e | 67.16 | b | 80.63 | 82.57 | b | 77.15 | a | 75.38 | e | 66.12 | k | 55.77 | 49.82 | a | 64.46 | a | |||
1960 | 44.97 | 46.40 | d | 58.22 | d | 62.10 | a | 67.87 | a | 80.31 | d | 82.00 | f | 78.97 | b | 75.63 | d | 63.20 | f | 56.56 | e | 46.46 | h | 63.45 | c | |
1961 | 50.22 | b | 49.55 | g | 54.83 | e | 62.68 | e | 68.47 | b | 80.29 | a | 81.43 | c | 77.96 | d | 73.42 | f | 64.59 | i | 53.02 | d | 48.72 | f | 66.11 | d |
1962 | 48.04 | d | 52.23 | h | 50.04 | e | 65.00 | i | 67.05 | b | 74.81 | a | 81.60 | 82.80 | a | 78.21 | a | 68.10 | g | 58.80 | e | 52.11 | 65.94 | c | ||
1963 | 47.58 | a | 55.17 | a | 54.32 | a | 59.90 | 70.95 | 74.18 | 82.53 | 78.74 | 78.13 | 69.56 | 56.35 | 50.60 | 64.84 | ||||||||||
1964 | 44.97 | 45.03 | 51.37 | a | 58.50 | 68.24 | 75.92 | 81.84 | b | 77.28 | b | 73.22 | a | 67.56 | 52.48 | 50.50 | 62.24 | |||||||||
1965 | 51.66 | 48.29 | 52.15 | a | 60.58 | 65.76 | d | 72.78 | 80.95 | 80.25 | a | 73.05 | 67.58 | 59.35 | 49.67 | b | 63.51 | |||||||||
1966 | 45.56 | 45.54 | 56.39 | 62.27 | 71.19 | 77.90 | 81.74 | 78.61 | 74.31 | a | 65.08 | 59.00 | 51.69 | e | 64.11 | |||||||||||
1967 | 49.93 | i | 52.78 | a | 58.93 | c | 59.17 | 67.00 | 74.98 | 79.77 | 78.21 | 75.35 | 66.85 | 58.55 | 46.02 | 65.24 | a | |||||||||
1968 | 48.85 | 54.67 | 54.25 | a | 59.67 | a | 67.81 | 77.70 | 79.84 | 76.10 | 75.07 | 67.00 | 55.12 | 47.85 | 63.66 | |||||||||||
1969 | 53.29 | 50.23 | 51.81 | 62.75 | 69.65 | e | 77.29 | b | 82.15 | 81.05 | 75.70 | 62.52 | 56.88 | 52.00 | f | 65.76 | a | |||||||||
1970 | 48.05 | 53.74 | a | 53.40 | 57.28 | 70.05 | 78.03 | 82.27 | a | 79.87 | 73.90 | 62.31 | 58.28 | 51.27 | 64.04 | |||||||||||
1971 | 49.05 | 50.11 | 56.79 | 59.52 | 65.55 | 76.82 | 83.79 | 77.35 | 75.47 | 61.90 | 54.02 | 46.95 | 63.11 | |||||||||||||
1972 | 48.61 | 52.83 | 61.87 | 61.73 | 68.00 | 77.58 | 83.13 | 78.68 | 74.30 | 64.13 | 49.98 | 48.13 | h | 65.53 | a | |||||||||||
1973 | 42.05 | 45.86 | 49.18 | 56.52 | 68.82 | 78.95 | 80.05 | 80.23 | 74.27 | 63.32 | 53.10 | 49.10 | 61.79 | |||||||||||||
1974 | 47.79 | 48.65 | a | 58.48 | a | 61.74 | a | 69.36 | b | 82.05 | a | 80.63 | a | 79.03 | 74.73 | 64.97 | b | 53.86 | b | 44.84 | b | 63.85 | ||||
1975 | 48.88 | f | 49.12 | 53.48 | 56.31 | a | 66.62 | b | 76.58 | 80.31 | 81.02 | a | 74.76 | a | 64.40 | 54.88 | 49.82 | 64.30 | a | |||||||
1976 | 49.71 | 54.52 | b | 54.19 | b | 60.09 | b | 68.18 | 78.17 | a | 79.50 | b | 79.28 | a | 73.76 | a | 63.67 | a | 56.37 | c | 49.66 | b | 63.92 | |||
1977 | 48.90 | 52.70 | a | 51.50 | d | 62.74 | a | 66.70 | a | 79.80 | 82.73 | 81.42 | a | 77.89 | b | 69.34 | 57.80 | 54.19 | b | 65.48 | ||||||
1978 | 51.09 | b | 50.54 | 58.48 | 60.57 | 67.98 | a | 79.92 | 83.40 | a | 79.03 | 76.07 | 68.94 | 55.09 | b | 47.98 | c | 64.92 | ||||||||
1979 | 46.10 | 51.13 | a | 53.18 | 61.18 | 68.05 | 78.35 | 83.47 | 78.82 | 79.27 | b | 69.58 | 53.43 | 52.52 | b | 64.59 | ||||||||||
1980 | 52.60 | a | 56.12 | 54.36 | b | 61.75 | 66.87 | 81.29 | a | 85.66 | 81.18 | 77.48 | 67.03 | 57.60 | 56.60 | a | 66.55 | |||||||||
1981 | 53.44 | 55.39 | 54.53 | 65.70 | 68.87 | 82.50 | 82.39 | 79.97 | 75.80 | 64.89 | 59.88 | a | 53.85 | a | 66.43 | |||||||||||
1982 | 50.18 | a | 53.81 | a | 56.72 | b | 63.11 | b | 68.18 | 75.65 | c | 81.42 | a | 81.00 | 76.52 | a | 65.38 | e | 55.55 | a | 48.24 | 64.65 | ||||
1983 | 50.03 | 51.02 | b | 53.50 | 55.98 | 67.87 | 75.33 | 82.24 | 78.52 | 77.42 | 66.03 | 55.14 | a | 52.42 | 63.79 | |||||||||||
1984 | 50.30 | a | 50.97 | 57.40 | a | 61.05 | 74.47 | 77.97 | 78.25 | a | 77.40 | a | 75.84 | a | 63.02 | b | 55.17 | 50.60 | b | 64.37 | ||||||
1985 | 48.47 | 50.70 | 56.40 | a | 64.40 | 70.12 | b | 80.07 | 81.89 | 79.40 | 71.82 | 65.19 | 55.03 | 50.11 | c | 64.47 | ||||||||||
1986 | 54.84 | b | 54.54 | 59.39 | 64.62 | 70.39 | 79.72 | c | 78.50 | h | 80.52 | a | 72.76 | a | 64.53 | 57.48 | a | 49.69 | 64.41 | a | ||||||
1987 | 47.71 | b | 50.09 | a | 53.06 | 64.21 | a | 66.77 | 78.12 | 79.74 | 77.05 | 71.72 | a | 68.24 | 53.04 | c | 45.82 | 62.96 | ||||||||
1988 | 47.20 | c | 53.16 | a | 54.27 | 60.23 | b | 67.73 | 78.23 | 80.52 | 78.77 | a | 72.18 | 68.77 | a | 53.36 | b | 47.04 | d | 63.45 | ||||||
1989 | 45.46 | e | 54.44 | c | 60.76 | d | 67.22 | c | 69.74 | d | 78.21 | f | 83.70 | a | 78.54 | d | 75.78 | c | 64.73 | 54.50 | a | 48.33 | a | 63.93 | a | |
1990 | 45.74 | b | 48.02 | a | 55.93 | a | 63.05 | b | 67.75 | a | 81.64 | b | 78.38 | j | 75.12 | a | 74.54 | c | 65.85 | e | 55.69 | a | 47.22 | a | 61.87 | a |
1991 | 47.50 | b | 54.17 | b | 51.74 | l | 58.98 | b | 66.07 | a | 74.91 | h | 80.43 | c | 78.74 | b | 73.53 | 65.37 | a | 53.16 | a | 48.10 | j | 64.22 | c | |
1992 | 46.30 | c | 52.52 | c | 54.92 | 64.19 | c | 69.35 | d | 75.12 | b | 79.25 | a | 78.62 | a | 75.07 | a | 66.39 | 50.52 | a | 48.62 | a | 63.41 | |||
1993 | 51.41 | c | 48.93 | e | 54.88 | a | 61.77 | 70.24 | b | 77.05 | 79.72 | a | 79.38 | b | 72.59 | a | 63.85 | a | 53.46 | f | 48.91 | b | 64.43 | a | ||
1994 | 47.69 | 49.71 | 57.12 | b | 64.03 | l | 67.47 | a | 82.12 | a | 82.92 | 81.70 | a | 74.96 | b | 62.02 | d | 52.08 | d | 49.00 | c | 64.25 | a | |||
1995 | 47.83 | d | 54.73 | d | 55.12 | a | 58.18 | 64.56 | 73.67 | a | 81.29 | ----- | z | 75.97 | a | 65.61 | 56.78 | g | 51.04 | f | 64.11 | c | ||||
1996 | 49.44 | d | 52.12 | a | 56.47 | a | 62.95 | 71.98 | 80.70 | 83.07 | a | 79.65 | a | 71.93 | 63.52 | 56.05 | b | 49.20 | a | 64.76 | ||||||
1997 | 47.98 | b | 48.19 | a | 60.24 | 60.13 | 72.18 | 75.63 | 81.37 | 78.37 | 75.31 | a | 61.85 | 54.57 | b | 42.58 | 63.20 | |||||||||
1998 | 46.94 | 45.88 | 53.19 | 55.30 | 65.35 | 73.85 | 80.15 | 79.00 | 75.21 | a | 63.83 | a | 54.52 | b | 46.90 | b | 61.68 | |||||||||
1999 | 48.47 | b | 52.62 | b | 55.34 | b | 57.13 | 67.07 | a | 76.72 | a | 79.24 | b | 79.07 | a | 76.05 | 67.77 | 59.62 | b | 46.70 | d | 63.82 | ||||
2000 | 50.67 | d | 53.74 | b | 54.52 | c | 64.30 | b | 73.16 | b | 79.24 | a | 81.24 | 79.31 | 76.88 | a | 64.26 | 48.29 | a | 50.86 | c | 64.71 | ||||
2001 | 45.08 | a | 48.66 | 54.07 | a | 61.19 | a | 71.37 | 78.28 | a | 80.10 | 78.81 | e | 76.28 | a | 66.47 | 57.48 | b | 45.17 | h | 65.25 | a | ||||
2002 | 48.47 | a | 50.89 | a | 53.76 | 65.08 | 68.06 | 80.08 | 80.95 | c | 79.42 | a | 75.88 | d | 62.92 | a | ----- | z | 46.70 | d | 64.75 | a | ||||
2003 | 53.29 | c | 50.37 | i | 53.97 | 59.76 | a | 69.12 | b | 77.60 | 84.40 | b | 80.84 | 76.15 | 69.77 | e | 55.06 | d | 49.13 | 66.28 | a | |||||
2004 | 48.83 | e | 47.02 | b | 61.18 | a | 61.28 | 69.74 | 77.40 | a | 80.27 | c | 78.58 | 75.15 | 64.66 | 51.69 | a | 48.34 | b | 63.68 | ||||||
2005 | 50.29 | b | 51.46 | 53.65 | 61.23 | 70.92 | 77.71 | a | 83.42 | 77.38 | a | 75.91 | a | 66.45 | 57.71 | b | 49.76 | d | 64.66 | |||||||
2006 | 48.74 | b | 53.13 | b | 52.65 | a | 62.48 | 71.89 | 80.97 | 82.05 | 77.31 | 71.30 | 63.88 | c | 56.44 | l | 46.02 | 64.58 | a | |||||||
2007 | 43.31 | b | 50.25 | 57.38 | a | 62.48 | 69.87 | 78.77 | 81.61 | 79.32 | 75.22 | 65.84 | 60.29 | a | 46.33 | a | 64.22 | |||||||||
2008 | 47.79 | b | 55.00 | q | 55.18 | 61.03 | a | 65.98 | a | 79.60 | 78.47 | 78.13 | d | 74.32 | 66.18 | a | 57.72 | 48.90 | 64.85 | a | ||||||
2009 | 51.21 | 52.38 | 57.35 | 61.03 | 72.34 | 75.52 | 82.15 | 80.97 | 75.68 | 63.45 | 58.38 | b | 46.58 | 64.75 | ||||||||||||
2010 | 48.95 | 49.04 | 51.83 | a | 59.62 | 64.90 | 77.75 | 82.10 | 79.40 | 76.45 | 65.66 | 52.40 | 53.03 | a | 63.43 | |||||||||||
2011 | 47.15 | 47.23 | 58.39 | 63.43 | 65.63 | 78.52 | 80.71 | 82.00 | b | 76.78 | 66.52 | 54.35 | 45.42 | a | 63.84 | |||||||||||
2012 | 51.26 | 51.29 | a | 54.52 | 63.90 | 70.06 | 79.40 | a | 80.24 | 80.81 | 73.02 | b | 66.74 | b | 58.70 | c | 49.05 | a | 64.92 | |||||||
2013 | 44.35 | 44.31 | d | 58.81 | 62.50 | 65.15 | a | 76.50 | f | 79.13 | a | 79.69 | 76.06 | e | 61.11 | d | 56.97 | a | 47.21 | c | 61.39 | a | ||||
2014 | 48.55 | a | 51.37 | a | 55.29 | 54.43 | 67.32 | 79.67 | 80.68 | 76.19 | 74.91 | a | 67.27 | 52.48 | a | 47.17 | a | 62.95 | ||||||||
2015 | 50.60 | 55.06 | a | 59.24 | 59.68 | b | 65.45 | a | 79.98 | 78.52 | 80.82 | 74.82 | 67.00 | 53.22 | a | 46.13 | a | 64.21 | ||||||||
2016 | 47.61 | 54.36 | 57.45 | 59.78 | 65.78 | b | 80.13 | 82.74 | ----- | z | 70.62 | n | 68.74 | 57.37 | 51.45 | a | 62.54 | b | ||||||||
2017 | 47.86 | b | 53.34 | 60.82 | 62.33 | 68.32 | 80.78 | 80.48 | 78.45 | 73.09 | c | 68.50 | a | 61.84 | b | 50.48 | b | 65.53 | ||||||||
2018 | 51.89 | 51.84 | 56.13 | 64.17 | 68.97 | 77.00 | 79.16 | 77.22 | a | 74.94 | c | 63.36 | b | 52.75 | b | 47.37 | a | 63.73 | ||||||||
2019 | 47.22 | a | 44.66 | c | 54.35 | g | 60.64 | a | 62.38 | a | 74.72 | 81.20 | h | ----- | z | ----- | z | 60.12 | j | 56.70 | j | 46.83 | v | 57.92 | g | |
2020 | ----- | z | 48.74 | 53.85 | a | 60.48 | 70.48 | a | 77.14 | a | 82.05 | 81.82 | 75.75 | 67.44 | 58.05 | b | 46.60 | b | 65.67 | a | ||||||
2021 | 46.60 | 50.14 | g | 51.63 | 63.02 | 67.74 | 80.50 | 77.52 | h | 78.20 | a | 75.03 | a | 63.90 | e | 59.89 | b | 51.07 | b | 63.76 | b | |||||
2022 | 49.78 | a | 49.63 | b | 54.38 | b | ----- | z | 63.40 | j | 79.58 | r | 81.82 | 78.13 | a | 76.18 | 64.74 | 52.28 | a | 47.96 | e | 61.66 | c | |||
2023 | 48.05 | 48.41 | 49.23 | c | 61.45 | 67.68 | 73.67 | ----- | z | 82.22 | h | 77.14 | a | 68.95 | a | 59.46 | c | 51.07 | d | 60.51 | b | |||||
2024 | 47.77 | e | 53.03 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 50.40 | j | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 48.68 | 50.87 | 55.15 | 61.21 | 68.41 | 78.10 | 81.30 | 79.04 | 75.43 | 65.87 | 55.56 | 49.21 | 64.11 | |||||||||||||
S.D. | 2.51 | 3.19 | 2.90 | 2.52 | 2.34 | 2.26 | 1.69 | 1.73 | 1.77 | 2.40 | 2.95 | 2.64 | 1.00 | |||||||||||||
SKEW | -0.03 | -0.14 | 0.01 | -0.32 | 0.14 | -0.26 | -0.06 | -0.77 | -0.20 | 0.26 | -0.07 | 0.26 | 0.06 | |||||||||||||
MAX | 54.84 | 58.21 | 61.87 | 67.22 | 74.47 | 82.50 | 85.66 | 82.80 | 79.27 | 72.52 | 61.84 | 56.60 | 66.55 | |||||||||||||
MIN | 42.05 | 44.31 | 47.89 | 54.43 | 62.38 | 72.78 | 76.44 | 72.08 | 71.30 | 61.11 | 48.29 | 42.58 | 61.68 | |||||||||||||
YRS | 74 | 73 | 75 | 74 | 77 | 74 | 72 | 74 | 75 | 73 | 73 | 70 | 49 |