YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1942 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 52.93 | c | 52.93 | k |
1943 | 57.45 | t | 57.43 | 60.05 | a | 67.83 | 74.29 | c | 80.73 | f | 84.47 | l | 81.98 | h | 79.41 | b | 68.92 | e | 58.37 | c | 48.98 | g | 66.61 | e | ||
1944 | 45.81 | b | 47.93 | f | 54.40 | g | 61.09 | s | 69.65 | d | 76.69 | i | 85.33 | e | 84.77 | a | 77.75 | 72.86 | q | ----- | z | 48.50 | m | 72.66 | g | |
1945 | 48.84 | c | 51.87 | m | 52.52 | b | 61.58 | f | 71.36 | q | 75.90 | f | 84.57 | d | 81.26 | l | 76.31 | l | 68.27 | 56.12 | 47.73 | e | 59.68 | f | ||
1946 | 45.75 | m | 48.61 | e | 57.38 | b | 67.74 | i | 70.06 | o | 83.11 | g | ----- | z | 82.33 | a | 79.10 | ----- | z | 52.95 | s | 52.61 | 64.01 | g | ||
1947 | 45.19 | 55.93 | a | 57.75 | e | ----- | z | 72.31 | o | 79.92 | k | 85.27 | i | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 52.96 | i | |
1948 | ----- | z | ----- | z | 51.62 | k | 65.53 | l | 71.50 | u | 81.92 | l | 84.23 | e | ----- | z | 80.39 | l | 70.54 | s | 53.29 | p | ----- | z | 84.23 | k |
1949 | ----- | z | 44.07 | u | 54.83 | p | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1950 | ----- | z | ----- | z | 59.53 | 68.32 | b | 70.71 | b | 81.14 | a | 83.06 | 83.77 | 77.27 | 75.31 | 61.41 | b | 55.44 | e | 71.60 | b | |||||
1951 | 48.96 | c | 52.93 | a | 57.11 | d | 63.74 | a | 71.95 | 78.34 | b | 88.34 | 83.63 | a | 81.42 | 70.26 | 58.83 | u | 49.31 | d | 67.82 | a | ||||
1952 | 51.46 | d | 49.39 | a | 51.08 | a | 63.12 | d | 75.13 | d | 80.23 | 84.34 | b | 83.52 | j | 79.44 | l | 72.25 | a | 51.00 | d | 47.34 | b | 62.54 | b | |
1953 | 52.16 | b | 49.72 | a | 57.47 | 63.07 | a | 67.45 | a | 83.48 | c | 86.06 | 85.96 | g | 80.94 | e | 69.72 | o | 59.24 | c | 46.55 | a | 64.61 | b | ||
1954 | 51.77 | g | 57.33 | a | 57.65 | 67.39 | k | 73.35 | a | 81.20 | b | 84.48 | a | 81.37 | h | 80.52 | c | 71.81 | e | 59.82 | e | 49.15 | g | 70.77 | d | |
1955 | 43.58 | g | 48.96 | e | 57.18 | a | 61.18 | h | 70.24 | d | 81.22 | j | 82.22 | h | 79.45 | j | 76.65 | g | 69.62 | e | 56.15 | 51.93 | i | 60.43 | g | |
1956 | 53.63 | l | 45.03 | j | 58.25 | g | 65.03 | n | 73.22 | d | 84.75 | l | 84.57 | d | 83.38 | k | 82.48 | e | 67.83 | h | 53.40 | e | 49.23 | k | 73.42 | h |
1957 | 51.77 | e | 58.25 | h | 59.25 | c | 64.52 | c | 68.79 | c | 85.33 | d | 87.36 | c | 83.66 | i | 79.68 | b | 65.73 | e | 50.27 | j | 51.06 | f | 70.30 | d |
1958 | 48.48 | e | 53.72 | c | 52.43 | a | 62.35 | f | 76.76 | l | 85.36 | i | 86.74 | d | 83.02 | j | 76.98 | i | 70.71 | c | 57.08 | d | 54.42 | g | 61.53 | f |
1959 | 53.41 | c | 51.50 | a | 58.42 | f | 68.87 | g | 71.04 | d | 85.48 | e | 86.22 | a | 79.93 | b | 79.40 | j | 69.13 | p | 57.09 | n | 50.71 | c | 68.33 | e |
1960 | 46.27 | c | 48.85 | b | 60.57 | b | 64.30 | g | 73.02 | d | 84.57 | c | 86.87 | 83.81 | 79.44 | e | 66.80 | c | 58.48 | d | 45.81 | g | 68.87 | b | ||
1961 | 50.80 | c | 52.94 | c | 56.63 | l | 64.72 | e | 71.52 | e | 85.44 | c | 85.08 | 81.91 | c | 74.14 | l | 66.34 | 53.38 | a | 48.02 | e | 66.02 | b | ||
1962 | 48.21 | b | 55.02 | a | 52.90 | b | 69.38 | n | 71.71 | b | 80.02 | a | 85.42 | 87.23 | 80.66 | a | 69.11 | 62.20 | b | 52.67 | e | 67.74 | a | |||
1963 | 47.81 | 56.96 | a | 57.27 | a | 62.88 | 76.40 | b | 78.10 | 87.50 | 81.21 | 79.41 | a | 71.82 | a | 57.74 | a | 48.96 | e | 67.17 | ||||||
1964 | 44.42 | a | 45.84 | a | 53.34 | 63.34 | e | 71.10 | b | 80.43 | g | 85.67 | a | 79.64 | b | 75.28 | g | 69.87 | a | 51.27 | b | ----- | z | 62.72 | c | |
1965 | ----- | z | 49.67 | a | 54.26 | 63.26 | a | 68.72 | a | 76.98 | b | 86.89 | 85.21 | 77.07 | 70.72 | a | 61.83 | c | 50.76 | b | 67.76 | a | ||||
1966 | 46.73 | 47.07 | 59.00 | b | 64.56 | d | 73.90 | 82.12 | 86.47 | a | 82.94 | 78.17 | c | 67.21 | e | 58.55 | a | 49.27 | c | 66.33 | ||||||
1967 | 48.53 | a | 52.38 | c | 58.14 | b | 60.91 | b | 68.05 | a | 78.28 | e | 84.13 | 82.08 | 78.21 | b | 68.26 | 61.09 | a | 46.04 | h | 67.28 | a | |||
1968 | 49.78 | b | 56.94 | c | 57.28 | a | 60.97 | a | 70.38 | a | 83.78 | l | 83.85 | g | 79.27 | 77.48 | c | 68.62 | c | 55.21 | d | 49.76 | l | 63.99 | c | |
1969 | 53.29 | j | 49.83 | b | 52.57 | b | 64.26 | g | 73.69 | b | 77.31 | a | 86.29 | 85.26 | 78.57 | 63.92 | 55.91 | c | 50.29 | e | 67.36 | b | ||||
1970 | 48.30 | c | 54.92 | b | 55.50 | b | 59.09 | b | 73.60 | a | 81.76 | a | 87.63 | a | 84.68 | a | 76.09 | a | 63.30 | i | 57.46 | q | 50.12 | e | 67.17 | b |
1971 | 49.47 | a | 50.63 | e | 57.07 | i | 60.98 | j | 69.56 | g | 85.59 | n | 86.36 | b | 80.27 | e | 77.24 | c | 62.67 | a | 55.23 | f | 46.50 | j | 67.77 | f |
1972 | 48.82 | i | 53.35 | b | 64.56 | d | 63.95 | j | 70.43 | d | 80.57 | c | 86.66 | c | 82.98 | b | 78.20 | e | 67.17 | e | 52.20 | b | 48.06 | d | 68.42 | b |
1973 | 46.69 | m | 53.20 | h | 51.38 | b | 59.81 | a | 73.57 | a | 81.69 | a | 85.04 | e | 84.71 | b | 78.87 | c | 68.90 | e | 57.69 | f | 52.32 | i | 73.00 | d |
1974 | 49.85 | d | 50.13 | a | 61.02 | f | 64.50 | b | 74.29 | j | 85.18 | b | 83.44 | f | 83.44 | d | 77.16 | h | 68.56 | f | 56.38 | d | 45.17 | e | 62.09 | e |
1975 | 48.14 | f | 51.17 | d | 56.39 | c | 58.10 | f | 69.26 | h | 79.07 | c | 84.27 | g | 84.56 | d | 79.18 | h | 66.96 | g | 55.72 | e | 49.50 | f | 65.38 | g |
1976 | 48.42 | f | 56.62 | h | 55.52 | e | 63.21 | f | 72.16 | c | 79.90 | i | 83.14 | f | 83.14 | f | 76.48 | h | 65.20 | c | 57.04 | g | 49.87 | h | 64.29 | i |
1977 | 49.22 | d | 54.28 | c | 54.23 | c | 64.86 | e | 67.33 | e | 82.38 | a | 85.48 | g | 84.42 | 83.44 | v | 69.27 | i | 59.02 | e | 55.68 | l | 64.47 | d | |
1978 | 51.73 | k | 51.30 | a | 59.69 | d | 61.31 | d | 69.45 | c | 81.74 | c | 83.59 | d | 81.84 | c | 77.50 | g | 70.46 | e | 56.67 | c | 47.28 | h | 68.45 | c |
1979 | 46.34 | c | 50.86 | c | 52.63 | a | 62.02 | f | 69.05 | c | 78.67 | f | 84.50 | b | 80.54 | f | 79.37 | c | 69.77 | e | 53.25 | b | 53.02 | g | 63.22 | d |
1980 | 51.75 | c | 55.44 | d | 55.70 | c | 62.82 | e | 67.46 | h | 82.65 | d | 86.58 | e | 82.93 | b | 79.59 | c | 68.22 | b | 56.79 | d | 55.67 | h | 68.25 | b |
1981 | 54.02 | c | 54.67 | e | 56.21 | g | 66.38 | e | 71.09 | d | 84.83 | 85.84 | c | 84.18 | c | 78.26 | e | 66.18 | a | 60.38 | b | 53.87 | d | 69.06 | a | |
1982 | 49.64 | f | 54.57 | a | 56.62 | a | 66.52 | g | 71.00 | a | 78.27 | b | 83.62 | e | 83.20 | d | 78.75 | b | 65.46 | g | 56.75 | d | 48.64 | b | 67.94 | c |
1983 | 44.67 | y | 52.73 | b | 55.11 | d | 57.46 | c | 70.18 | a | 78.65 | c | 84.33 | b | 80.26 | b | 80.28 | e | 66.23 | e | 56.60 | d | 52.80 | a | 66.78 | a |
1984 | 49.37 | 51.06 | b | 58.14 | c | 62.09 | c | 76.03 | 79.80 | c | 80.94 | 79.53 | 76.41 | a | 63.36 | c | 54.27 | h | 50.31 | b | 66.09 | a | ||||
1985 | 47.62 | e | 50.38 | b | 56.87 | d | 64.86 | b | 70.90 | 80.52 | b | 85.32 | a | 83.00 | 73.57 | b | 67.00 | a | 56.16 | a | 50.00 | e | 65.52 | |||
1986 | 54.79 | c | 55.70 | a | 61.15 | d | 66.07 | a | 73.20 | k | 83.07 | c | 81.95 | b | 84.02 | b | 76.23 | b | 65.95 | 56.55 | 48.82 | a | 66.75 | a | ||
1987 | 47.78 | b | 51.69 | b | 55.21 | 66.35 | d | 70.31 | b | 82.23 | 83.72 | b | 81.84 | 76.14 | a | 71.23 | 54.72 | 47.23 | a | 65.70 | ||||||
1988 | 48.47 | 54.72 | 56.79 | ----- | z | 71.42 | a | 81.93 | 86.17 | b | 83.32 | a | 76.52 | a | 71.57 | a | 56.34 | a | 47.43 | b | 66.79 | a | ||||
1989 | 46.13 | a | 54.63 | b | 61.67 | a | 69.78 | 73.27 | 80.98 | d | 87.17 | b | 82.39 | h | 79.41 | c | 67.00 | d | 57.22 | 48.04 | d | 65.94 | a | |||
1990 | 47.57 | d | 49.08 | d | 57.93 | a | 65.25 | b | 70.48 | a | 85.00 | 82.09 | d | 78.87 | e | 78.03 | a | 67.61 | 57.23 | b | 47.60 | b | 65.56 | |||
1991 | 47.95 | b | 55.54 | e | 52.98 | c | 60.33 | f | 67.78 | d | 76.43 | c | 83.64 | c | 83.02 | 77.60 | a | 69.83 | d | 55.83 | c | 50.76 | b | 65.58 | a | |
1992 | 47.83 | a | 53.48 | b | 54.88 | c | 66.06 | c | 73.39 | d | 79.86 | a | 82.61 | h | 81.46 | h | 77.59 | h | 67.82 | f | 50.29 | f | 48.21 | 60.53 | e | |
1993 | 51.93 | a | 50.24 | c | 55.53 | a | 62.70 | e | 72.32 | a | 79.70 | 83.92 | 80.52 | e | 75.25 | h | 66.14 | c | 53.91 | c | 49.25 | a | 64.20 | a | ||
1994 | 49.10 | 50.56 | d | 58.38 | b | 62.73 | h | 70.40 | e | 85.38 | b | 86.55 | a | 85.11 | 79.61 | c | 66.12 | a | 53.40 | d | 50.46 | c | 66.83 | a | ||
1995 | 49.50 | c | 56.46 | c | ----- | z | 60.02 | 66.78 | f | 77.02 | e | 85.27 | c | 84.77 | e | 80.17 | c | 68.36 | i | 60.57 | 51.38 | b | 67.24 | c | ||
1996 | 51.23 | a | 55.58 | e | 58.03 | a | 65.81 | f | 74.32 | f | 83.68 | b | 86.21 | e | 83.35 | g | 75.41 | b | 66.83 | e | 58.43 | 51.43 | b | 65.20 | c | |
1997 | 49.50 | 50.54 | d | 60.82 | 61.91 | b | 75.34 | b | 78.53 | 84.39 | d | 83.82 | a | 80.82 | b | 65.38 | a | 56.97 | a | 45.39 | c | 66.12 | ||||
1998 | 50.88 | g | 48.11 | a | 54.95 | b | 57.66 | a | 68.03 | b | 77.43 | 84.14 | b | 82.48 | b | 78.85 | c | 67.23 | c | 57.69 | a | 47.76 | b | 65.85 | a | |
1999 | 50.62 | a | 53.21 | 59.02 | d | 59.04 | b | 70.84 | 79.48 | a | 82.29 | b | 81.39 | c | 77.93 | a | 68.68 | a | 62.00 | b | 47.36 | b | 65.99 | |||
2000 | 51.00 | c | 54.13 | c | 55.72 | a | 66.03 | a | 75.68 | a | 82.38 | d | 85.16 | 82.18 | 80.15 | d | 66.28 | b | 49.52 | 51.10 | f | 68.02 | a | |||
2001 | 47.03 | a | 49.31 | a | 56.39 | h | 61.80 | c | 75.03 | b | 80.20 | c | 82.32 | f | 81.59 | b | 78.34 | a | 69.03 | b | 58.52 | b | 46.41 | b | 64.73 | b |
2002 | 47.53 | a | 51.08 | b | 54.90 | b | 67.10 | a | 71.07 | c | 83.50 | c | 83.41 | d | 82.20 | c | 77.69 | c | 65.52 | a | 56.33 | 47.82 | c | 65.68 | ||
2003 | 53.81 | d | 51.41 | a | 55.38 | c | 61.57 | c | 72.83 | a | 81.26 | c | 85.05 | c | 81.57 | b | 78.42 | e | 71.06 | e | 54.38 | a | 50.13 | d | 66.41 | |
2004 | 48.98 | a | 47.77 | a | 63.20 | a | 63.00 | f | 71.37 | d | 79.59 | a | 82.78 | d | 81.58 | e | 74.76 | k | 60.19 | e | 50.05 | h | 47.60 | b | 64.78 | c |
2005 | 50.52 | b | 51.02 | g | 53.83 | d | 63.54 | g | 70.54 | c | 79.38 | e | 85.81 | r | ----- | z | 71.85 | f | 66.30 | c | 55.50 | j | 49.39 | 61.66 | f | |
2006 | 50.46 | e | 54.08 | b | 54.37 | d | 63.60 | d | 75.15 | a | 84.25 | 86.20 | a | 81.05 | a | 75.23 | b | 66.16 | 58.28 | a | 46.97 | b | 66.32 | |||
2007 | 44.12 | a | 50.31 | a | 56.93 | c | ----- | z | 74.43 | a | 82.58 | 85.59 | b | ----- | z | 79.89 | c | 68.27 | e | 62.98 | a | 47.93 | b | 65.30 | b | |
2008 | 48.00 | ----- | z | 55.81 | e | ----- | z | 68.79 | n | 82.00 | 77.12 | j | 79.76 | h | 75.70 | 66.27 | 56.70 | 50.21 | l | 64.08 | f | |||||
2009 | 51.92 | k | ----- | z | 59.15 | d | 62.64 | b | 74.77 | 76.95 | a | 86.47 | b | 84.92 | m | 79.07 | 68.22 | h | ----- | z | ----- | z | 73.17 | f | ||
2010 | 50.36 | f | 47.21 | b | 53.37 | d | 60.24 | c | 67.73 | a | 80.21 | a | 85.20 | a | 82.85 | 79.45 | 69.40 | g | 53.95 | a | 54.32 | c | 66.45 | b | ||
2011 | 47.69 | 48.74 | a | 60.94 | e | 65.85 | 69.65 | a | 82.04 | c | 84.27 | c | 84.81 | d | 79.52 | e | 67.75 | c | 55.03 | a | 44.73 | a | 65.92 | |||
2012 | 51.14 | c | 52.37 | c | 56.55 | a | 66.12 | a | 74.12 | c | 83.27 | f | 82.59 | c | 83.67 | a | 76.60 | a | 67.83 | b | 60.19 | c | 49.27 | a | 65.49 | a |
2013 | 45.59 | b | 46.65 | a | 60.87 | 65.71 | b | 73.13 | a | 83.83 | c | 83.78 | d | 81.84 | f | 77.66 | b | 64.39 | c | 56.91 | a | 48.30 | a | 64.26 | a | |
2014 | 52.10 | b | 55.91 | 59.39 | 64.64 | b | 71.43 | a | 83.50 | 84.43 | b | 80.80 | d | 78.13 | d | 68.46 | f | 56.20 | c | 50.59 | d | 67.01 | a | |||
2015 | 50.16 | b | 57.41 | 61.40 | b | 62.92 | 68.12 | b | 81.78 | c | 81.83 | b | 84.95 | 78.57 | 69.43 | a | 54.07 | 46.90 | b | 66.46 | ||||||
2016 | 47.65 | 55.81 | b | 60.48 | 64.42 | 69.63 | 83.97 | a | 87.10 | b | 81.70 | c | 76.65 | d | 72.53 | b | 59.03 | a | 51.78 | d | 67.56 | |||||
2017 | 49.85 | d | 56.63 | b | 62.84 | c | 64.98 | c | 72.65 | g | 84.33 | c | 84.40 | a | 81.90 | b | 77.69 | a | 71.98 | 64.17 | a | 52.84 | b | 68.33 | a | |
2018 | 54.35 | a | 53.06 | c | 58.80 | a | 68.39 | c | 73.18 | c | 82.73 | b | 85.03 | a | 82.59 | b | 80.62 | a | 66.60 | a | 55.07 | b | 50.57 | x | 69.13 | a |
2019 | ----- | z | 47.38 | l | 57.17 | b | 65.37 | c | 65.88 | b | 79.88 | 85.83 | d | 85.14 | b | 78.11 | c | 65.24 | 59.47 | a | 49.50 | 69.16 | b | |||
2020 | 49.00 | 49.47 | 56.90 | 64.40 | a | 74.50 | a | 81.71 | a | 87.65 | 87.97 | a | 80.07 | a | 71.17 | a | 60.95 | b | 47.50 | a | 67.61 | |||||
2021 | 48.58 | 52.73 | 55.44 | 66.23 | b | 72.48 | a | 84.57 | a | 81.54 | c | 81.13 | a | 77.70 | 65.11 | 60.35 | 52.58 | 66.54 | ||||||||
2022 | 48.53 | a | 48.06 | a | 57.02 | 65.92 | d | 72.95 | a | 82.28 | a | 84.71 | 80.82 | a | 77.98 | 65.34 | b | 50.55 | 49.15 | 65.28 | ||||||
2023 | 46.53 | b | 47.77 | b | 54.52 | 63.91 | c | 70.32 | a | 76.37 | 89.47 | a | 84.75 | a | 79.95 | 70.27 | 59.45 | b | 51.06 | 66.20 | ||||||
2024 | 48.44 | 52.43 | 54.52 | e | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 51.80 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 49.15 | 52.15 | 56.96 | 63.79 | 71.62 | 81.31 | 85.07 | 82.80 | 78.45 | 67.95 | 57.05 | 49.42 | 66.26 | |||||||||||||
S.D. | 2.39 | 3.05 | 2.93 | 2.70 | 2.43 | 2.55 | 1.73 | 1.92 | 1.67 | 2.73 | 3.11 | 2.36 | 0.68 | |||||||||||||
SKEW | 0.31 | -0.01 | 0.25 | -0.31 | -0.09 | -0.15 | -0.14 | 0.16 | -0.30 | 0.00 | -0.11 | 0.39 | 0.70 | |||||||||||||
MAX | 54.79 | 57.43 | 64.56 | 69.78 | 76.40 | 85.48 | 89.47 | 87.97 | 82.48 | 75.31 | 64.17 | 55.44 | 67.61 | |||||||||||||
MIN | 44.12 | 45.84 | 51.08 | 57.46 | 65.88 | 76.37 | 80.94 | 78.87 | 73.57 | 60.19 | 49.52 | 44.73 | 65.28 | |||||||||||||
YRS | 61 | 69 | 71 | 53 | 66 | 65 | 67 | 59 | 62 | 63 | 64 | 56 | 17 |