YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1933 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 107.97 | 105.84 | f | 102.46 | b | ----- | z | ----- | z | ----- | z | 105.22 | j | |
1934 | ----- | z | 73.69 | b | 87.90 | 90.67 | 97.29 | 95.50 | 106.06 | 103.13 | a | 98.07 | 89.26 | 76.93 | 66.53 | a | 89.55 | a | ||||||||
1935 | 63.10 | 68.21 | 71.26 | 81.17 | 86.68 | 102.80 | 104.32 | 101.10 | 98.76 | a | 84.74 | 69.93 | 65.16 | 83.10 | ||||||||||||
1936 | 66.42 | 67.45 | 78.39 | 86.53 | 94.19 | 101.70 | 104.97 | a | 103.00 | 96.70 | 83.00 | e | 73.37 | 62.74 | 84.87 | |||||||||||
1937 | 50.61 | 65.89 | 72.55 | 82.70 | 91.58 | 99.63 | 105.65 | 105.97 | 100.40 | 89.13 | 76.27 | 68.90 | 84.11 | |||||||||||||
1938 | 68.00 | 65.23 | b | 68.53 | a | 82.20 | 90.45 | 98.96 | b | 103.81 | 102.00 | 99.87 | 83.97 | 70.28 | a | 66.81 | 83.34 | |||||||||
1939 | 63.26 | 62.48 | a | 75.97 | 87.36 | b | 93.71 | 100.93 | 106.61 | 103.63 | a | 92.87 | 85.32 | 77.03 | 72.03 | 85.10 | ||||||||||
1940 | 67.81 | 69.14 | 80.81 | 84.80 | 96.81 | 104.37 | 105.16 | 105.13 | 95.43 | g | 88.00 | g | 73.20 | 67.39 | 85.46 | b | ||||||||||
1941 | 63.65 | 69.07 | 72.16 | 75.33 | 90.97 | 95.13 | 103.29 | 97.29 | 88.93 | a | 77.25 | w | 75.50 | 66.81 | 81.65 | a | ||||||||||
1942 | 67.73 | a | 66.46 | 74.17 | b | 79.83 | 89.39 | 99.17 | 107.65 | 103.58 | 99.00 | 89.32 | 81.00 | 72.42 | 85.81 | |||||||||||
1943 | 67.58 | 72.39 | 77.39 | 85.13 | 93.97 | 96.63 | 107.00 | 102.32 | 101.83 | 88.74 | 77.13 | 65.00 | 86.26 | |||||||||||||
1944 | 64.94 | 63.28 | 71.65 | 79.13 | 88.52 | 92.03 | 104.16 | 106.03 | 99.77 | 88.81 | 69.00 | 68.23 | 82.96 | |||||||||||||
1945 | 70.39 | 72.89 | 67.71 | 81.53 | 87.29 | 94.00 | 104.90 | 100.35 | 98.37 | 87.58 | 74.90 | 64.81 | 83.73 | |||||||||||||
1946 | 67.03 | 67.46 | 72.10 | 84.30 | 87.61 | 99.80 | 100.06 | 101.90 | 98.70 | 79.71 | 67.40 | 67.81 | 82.82 | |||||||||||||
1947 | 63.77 | 72.89 | 74.48 | 80.85 | c | 93.48 | 96.14 | a | 106.13 | 98.87 | 100.90 | 87.29 | 70.43 | 63.97 | 84.10 | |||||||||||
1948 | ----- | z | ----- | z | 68.68 | 84.24 | a | 90.80 | a | 98.43 | 104.39 | 105.06 | 100.77 | 86.81 | 72.50 | 63.71 | 87.54 | b | ||||||||
1949 | 52.90 | 64.07 | 73.52 | 86.73 | 89.32 | 100.87 | 104.16 | 104.06 | 103.30 | 85.00 | 83.70 | 66.06 | 84.48 | |||||||||||||
1950 | 63.35 | 74.39 | 77.81 | 89.47 | 89.58 | 100.27 | 103.65 | 105.71 | 98.07 | 95.68 | 81.37 | 76.10 | 87.95 | |||||||||||||
1951 | 66.65 | 68.18 | 74.03 | 80.53 | 89.39 | 96.97 | 104.55 | 102.13 | 102.33 | 87.39 | 72.00 | 62.35 | 83.87 | |||||||||||||
1952 | 60.42 | 67.55 | 66.52 | 80.17 | 95.00 | 94.93 | 103.74 | 104.61 | 100.10 | 96.23 | 69.83 | 63.65 | 83.56 | |||||||||||||
1953 | 72.52 | 69.25 | 75.19 | 80.90 | 81.68 | 96.90 | 105.68 | 103.39 | 101.50 | 87.74 | 77.07 | 68.00 | 84.98 | |||||||||||||
1954 | 65.16 | 76.61 | 70.61 | 88.80 | 92.94 | 98.03 | 104.81 | 102.16 | 101.00 | 90.94 | 80.57 | 66.61 | 86.52 | |||||||||||||
1955 | 59.71 | 65.04 | 74.52 | 79.10 | 87.03 | 98.23 | 101.19 | 100.87 | 100.83 | 92.16 | 75.53 | 70.16 | 83.70 | |||||||||||||
1956 | 71.10 | 66.72 | 78.29 | 79.97 | 90.13 | 100.77 | 102.26 | 102.26 | 103.40 | 85.61 | 75.13 | 69.42 | 85.42 | |||||||||||||
1957 | 60.81 | 74.04 | 75.10 | 81.33 | 84.48 | 102.03 | 105.26 | 101.16 | 99.07 | 80.74 | 69.27 | 68.97 | 83.52 | |||||||||||||
1958 | 68.03 | 70.93 | 67.07 | a | 81.53 | 94.58 | 99.13 | 104.81 | 103.77 | 99.60 | 90.77 | 74.93 | 74.55 | 85.81 | ||||||||||||
1959 | 69.52 | 65.54 | 79.45 | 86.80 | 87.00 | 102.10 | 107.45 | 101.00 | 96.17 | 89.58 | 75.67 | 65.61 | 85.49 | |||||||||||||
1960 | 59.35 | 65.38 | 79.87 | h | 84.17 | 90.35 | 103.90 | 106.68 | 104.26 | 99.90 | 86.52 | 73.97 | 66.13 | a | 85.51 | a | ||||||||||
1961 | 69.40 | a | 71.89 | 75.42 | 84.43 | 88.23 | 102.20 | 104.48 | 101.97 | 94.07 | 86.32 | 70.70 | 65.37 | a | 84.54 | |||||||||||
1962 | 65.58 | 68.25 | 69.03 | 89.23 | 86.00 | 98.87 | 103.97 | 106.71 | 99.83 | 87.87 | 80.30 | 69.58 | 85.44 | |||||||||||||
1963 | 62.45 | 76.96 | 73.58 | 76.73 | 91.77 | 93.97 | 104.68 | 101.00 | 98.53 | 88.58 | 74.33 | 69.48 | 84.34 | |||||||||||||
1964 | 64.35 | 67.48 | 71.52 | b | 79.10 | 87.26 | 96.43 | 104.55 | 102.35 | 97.37 | 93.87 | a | 69.97 | 67.55 | 83.48 | |||||||||||
1965 | 67.35 | 70.71 | 70.52 | 78.50 | 87.23 | 93.07 | a | 103.39 | 103.94 | 93.13 | 93.10 | 74.33 | 63.19 | 83.20 | ||||||||||||
1966 | 62.29 | 64.71 | 76.55 | 86.43 | 92.71 | 98.57 | 103.77 | 103.58 | 97.13 | 85.35 | 75.63 | 67.87 | 84.55 | |||||||||||||
1967 | 67.10 | 72.46 | 76.67 | a | 72.00 | 88.48 | 93.90 | 104.68 | 105.35 | 94.70 | 90.71 | 79.70 | 61.87 | a | 83.97 | |||||||||||
1968 | 66.42 | 74.76 | 75.87 | 80.10 | 90.19 | 99.87 | 101.10 | 97.97 | 98.37 | 87.84 | 75.43 | 63.00 | 84.24 | |||||||||||||
1969 | 67.48 | 64.25 | 73.61 | 82.33 | 89.84 | 92.97 | a | 103.03 | 106.71 | 99.67 | 82.81 | 73.47 | 67.68 | 83.65 | ||||||||||||
1970 | 65.45 | 71.11 | a | 73.27 | a | 76.33 | 91.00 | 98.27 | 105.33 | a | 102.97 | 96.03 | 83.32 | 74.87 | 63.26 | 83.43 | ||||||||||
1971 | 66.62 | b | 71.21 | 75.87 | 79.10 | 83.39 | 96.70 | 105.32 | 99.74 | 97.50 | 79.61 | 72.20 | 60.68 | c | 82.33 | |||||||||||
1972 | 65.26 | 73.83 | 85.67 | a | 83.30 | c | 89.40 | a | 98.00 | a | 106.38 | b | 100.43 | c | 95.24 | a | 78.90 | b | 68.67 | 62.73 | a | 83.98 | ||||
1973 | 61.23 | 65.96 | 67.16 | 79.70 | 92.68 | 101.76 | a | 105.19 | 102.45 | 97.10 | 88.40 | a | 74.36 | b | 68.87 | 83.74 | ||||||||||
1974 | 61.90 | 68.78 | a | 74.70 | a | 81.43 | 90.26 | 103.90 | 102.42 | 103.33 | a | 98.73 | 86.35 | 74.70 | 63.68 | 84.18 | ||||||||||
1975 | 66.13 | a | 66.21 | 69.73 | a | 71.53 | 87.97 | a | 98.38 | a | 103.19 | 103.61 | 97.97 | 84.52 | 74.43 | 69.29 | 82.75 | |||||||||
1976 | 68.32 | 68.67 | b | 71.77 | 76.97 | 91.73 | a | 98.73 | 102.23 | 100.77 | 89.90 | 84.81 | 77.17 | a | 68.17 | b | 83.27 | |||||||||
1977 | 63.42 | 75.14 | 70.35 | 84.10 | 80.94 | 100.90 | 105.03 | b | 101.52 | 96.87 | 89.52 | 78.43 | 70.29 | 84.71 | ||||||||||||
1978 | 62.61 | 66.96 | 73.93 | a | 77.27 | 89.32 | 103.14 | a | 105.42 | 102.55 | 95.10 | 91.58 | 70.10 | a | 61.16 | 83.26 | ||||||||||
1979 | 56.74 | 65.93 | 70.43 | a | 82.23 | 88.26 | 100.43 | 103.81 | 98.61 | 102.03 | 88.93 | a | 72.43 | 69.81 | 83.30 | |||||||||||
1980 | 66.16 | 70.14 | 70.29 | 80.76 | a | 82.29 | 98.80 | 106.26 | 102.84 | 98.87 | 89.52 | 78.13 | 73.52 | 84.80 | ||||||||||||
1981 | 70.00 | 72.50 | 71.81 | 84.77 | 89.16 | 104.37 | 105.26 | 105.94 | 99.73 | 83.03 | b | 77.47 | 71.39 | 86.28 | ||||||||||||
1982 | 64.03 | 70.86 | 70.97 | 81.21 | b | 88.65 | 95.77 | 101.27 | a | 101.35 | 94.90 | a | 84.06 | 69.80 | 62.19 | 82.09 | ||||||||||
1983 | 68.10 | 67.93 | a | 71.26 | 74.67 | 90.30 | a | 96.67 | 103.19 | 97.74 | 97.63 | 84.55 | 73.00 | b | 66.52 | 82.63 | ||||||||||
1984 | 67.87 | 71.14 | a | 78.48 | 79.30 | 97.32 | 97.83 | 100.39 | 100.32 | 98.73 | 81.68 | 71.83 | 60.29 | 83.77 | ||||||||||||
1985 | 63.00 | 66.86 | 72.81 | 86.87 | 91.87 | 102.50 | 105.00 | 104.45 | 90.40 | 85.00 | 70.13 | 67.48 | 83.86 | |||||||||||||
1986 | 72.19 | 70.89 | 79.00 | 82.20 | 91.65 | 102.53 | 100.94 | 104.52 | 91.47 | 83.97 | 75.83 | 67.13 | 85.19 | |||||||||||||
1987 | 63.94 | 69.00 | 72.81 | 87.97 | 88.87 | 101.66 | a | 101.74 | 102.71 | 98.77 | 89.35 | 71.40 | 60.35 | 84.05 | ||||||||||||
1988 | 64.20 | a | 72.59 | 77.87 | 80.40 | 90.61 | 98.10 | 105.03 | 102.00 | 97.10 | 93.33 | a | 75.57 | 66.06 | 85.24 | |||||||||||
1989 | 62.37 | a | 68.00 | 81.06 | 91.13 | 92.03 | 100.53 | 106.81 | 101.06 | 98.43 | 86.55 | 77.53 | 69.61 | 86.26 | ||||||||||||
1990 | 65.39 | 67.43 | 78.42 | 83.90 | 88.50 | a | 101.17 | 104.39 | 100.90 | 97.77 | 89.03 | a | 75.43 | 62.42 | 84.56 | |||||||||||
1991 | 63.45 | 76.04 | a | 66.87 | 80.57 | 87.68 | 95.00 | 103.16 | 101.55 | 98.20 | 91.32 | 75.37 | 65.16 | 83.70 | ||||||||||||
1992 | 64.48 | 69.52 | 71.45 | 85.47 | 92.10 | 98.13 | 102.48 | 103.61 | 100.37 | 89.29 | 72.03 | 60.03 | 84.08 | |||||||||||||
1993 | 61.26 | 65.75 | 77.94 | 85.77 | 92.26 | 99.20 | 101.48 | 103.42 | 99.10 | 88.03 | 71.90 | 66.97 | 84.42 | |||||||||||||
1994 | 70.23 | a | 65.54 | 77.48 | 83.63 | 88.87 | 104.50 | 106.42 | 106.16 | 99.80 | 84.87 | 66.43 | 65.06 | 84.92 | ||||||||||||
1995 | 62.71 | 75.43 | 73.81 | 80.07 | 84.81 | 96.45 | a | 106.00 | 107.42 | 102.17 | 91.16 | 82.37 | 70.53 | a | 86.08 | |||||||||||
1996 | 70.42 | 73.82 | a | 77.35 | 86.47 | 94.65 | 102.00 | 106.45 | 106.10 | 97.10 | 87.10 | 75.53 | 67.68 | 87.06 | ||||||||||||
1997 | 66.06 | 70.93 | 83.29 | 82.13 | 98.42 | 97.60 | 103.39 | 105.16 | 97.97 | 85.03 | 76.20 | 62.16 | 85.70 | |||||||||||||
1998 | 67.65 | 64.11 | 72.94 | 77.30 | 84.55 | 94.90 | 106.97 | 106.42 | 97.07 | 85.94 | 75.05 | h | 66.14 | c | 84.00 | a | ||||||||||
1999 | 71.61 | 71.36 | 76.35 | 76.63 | 89.55 | 98.80 | 103.06 | 104.00 | 99.40 | 93.13 | 80.80 | 68.81 | 86.13 | |||||||||||||
2000 | 70.94 | 70.17 | 74.65 | 87.47 | 95.81 | 101.63 | 105.55 | 103.23 | 98.83 | a | 83.65 | 69.43 | 71.35 | 86.06 | ||||||||||||
2001 | 63.23 | 65.19 | a | 76.39 | 81.86 | a | 98.57 | a | 103.31 | a | 103.55 | 105.32 | 102.60 | 92.00 | 77.77 | 64.16 | 86.16 | |||||||||
2002 | 66.68 | 73.18 | 75.13 | 85.30 | 91.16 | 103.93 | 107.10 | 104.68 | 100.73 | 85.97 | 77.13 | 65.90 | 86.41 | |||||||||||||
2003 | 74.61 | 68.21 | 75.94 | 78.57 | 92.26 | 100.00 | 107.16 | 102.87 | 101.07 | b | 95.05 | i | 69.87 | 67.23 | 85.25 | a | ||||||||||
2004 | 66.48 | 65.69 | 83.74 | 84.07 | 93.19 | 100.30 | 104.74 | 103.74 | 98.77 | 82.58 | 68.70 | 65.10 | 84.76 | |||||||||||||
2005 | 64.81 | 65.61 | 74.68 | ----- | z | 92.87 | 98.57 | 107.16 | 102.97 | 97.50 | r | 85.94 | 77.40 | 69.39 | 83.94 | b | ||||||||||
2006 | 68.48 | 73.44 | a | 69.71 | 79.97 | 95.35 | 104.87 | 107.87 | 104.35 | 97.90 | a | 85.32 | 79.50 | 66.71 | 86.12 | |||||||||||
2007 | 63.32 | 71.96 | 80.13 | a | 83.97 | 93.81 | 102.10 | 106.45 | 105.45 | 97.55 | a | 86.13 | 79.73 | 62.52 | 86.09 | |||||||||||
2008 | 62.45 | 69.24 | 79.16 | 85.13 | 88.19 | 104.57 | ----- | z | 105.06 | 101.10 | 91.13 | 81.26 | g | 63.29 | 84.93 | b | ||||||||||
2009 | 71.03 | 68.82 | 77.29 | 82.20 | 98.65 | 95.37 | 108.42 | 105.94 | 102.57 | 85.06 | 78.13 | 63.35 | 86.40 | |||||||||||||
2010 | 66.97 | 68.68 | 73.58 | 79.53 | 87.04 | c | 100.27 | 105.71 | g | 104.61 | 101.53 | 82.44 | o | 73.57 | g | 68.26 | 83.39 | c | ||||||||
2011 | 67.52 | 66.25 | 76.62 | b | 83.80 | 86.87 | 99.40 | 104.55 | 108.00 | 100.07 | 90.00 | 72.57 | 64.06 | 84.98 | ||||||||||||
2012 | 71.77 | 70.76 | 76.30 | a | 86.20 | 95.42 | 103.23 | 104.39 | 103.50 | a | 100.33 | 90.24 | b | 80.10 | 67.23 | 87.46 | ||||||||||
2013 | 63.58 | 68.79 | 82.61 | 86.37 | 92.97 | 104.47 | 105.19 | 103.52 | 97.43 | 84.71 | 74.87 | 67.52 | 86.00 | |||||||||||||
2014 | 74.55 | 76.56 | c | 79.84 | 85.40 | 92.71 | 102.50 | 106.52 | 101.65 | 100.13 | 91.77 | 77.97 | 67.00 | 88.05 | ||||||||||||
2015 | 68.45 | 79.07 | 82.87 | 84.67 | 84.89 | d | 103.13 | 101.81 | 107.57 | a | 101.00 | 89.97 | a | 74.04 | b | 67.50 | g | 88.86 | a | |||||||
2016 | 65.71 | 77.69 | 82.10 | 83.90 | 88.45 | 105.07 | 108.32 | 105.35 | 97.20 | 91.00 | 78.63 | 66.03 | 87.45 | |||||||||||||
2017 | 62.16 | 70.93 | 82.57 | c | 86.37 | 91.97 | 105.55 | a | 107.35 | 106.00 | 96.18 | b | 91.55 | 79.70 | 70.28 | m | 89.12 | a | ||||||||
2018 | 70.65 | 72.41 | a | 75.10 | a | 88.57 | 90.78 | h | 103.00 | k | 106.23 | 107.00 | i | 102.63 | 84.52 | 76.10 | 66.10 | a | 82.48 | c | ||||||
2019 | 64.10 | a | 60.50 | b | 74.29 | 86.47 | 84.37 | a | 100.43 | 105.97 | 107.65 | 98.63 | 86.90 | 78.03 | 63.32 | l | 86.12 | a | ||||||||
2020 | 69.07 | a | 73.34 | 71.32 | 82.63 | 97.00 | 100.73 | 107.77 | 110.61 | 104.23 | 95.23 | 78.40 | 69.20 | a | 88.30 | |||||||||||
2021 | 69.14 | c | 72.68 | c | 73.48 | 87.60 | 93.87 | 106.67 | 106.39 | 104.86 | c | 101.03 | 85.00 | 85.59 | h | 68.42 | 88.10 | a | ||||||||
2022 | 69.48 | 71.25 | 79.39 | 86.73 | 94.16 | 103.70 | 106.68 | f | 103.94 | 99.80 | 88.65 | 71.32 | k | 68.16 | 86.53 | b | ||||||||||
2023 | 65.78 | d | 65.61 | 70.26 | 85.63 | 90.77 | 95.30 | 111.00 | 104.81 | 98.40 | 90.94 | 76.67 | 70.77 | 85.49 | ||||||||||||
2024 | 66.74 | 69.28 | 73.81 | 80.56 | l | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 69.94 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 65.81 | 69.61 | 74.94 | 82.69 | 90.51 | 99.67 | 104.86 | 103.41 | 98.61 | 87.54 | 74.90 | 66.61 | 84.79 | |||||||||||||
S.D. | 4.07 | 3.79 | 4.42 | 3.99 | 3.83 | 3.33 | 2.03 | 2.42 | 2.93 | 3.67 | 3.77 | 3.29 | 1.42 | |||||||||||||
SKEW | -0.73 | 0.20 | 0.42 | -0.34 | -0.08 | -0.16 | -0.07 | -0.08 | -1.00 | 0.04 | -0.06 | 0.21 | 0.44 | |||||||||||||
MAX | 74.61 | 79.07 | 87.90 | 91.13 | 98.65 | 106.67 | 111.00 | 110.61 | 104.23 | 96.23 | 83.70 | 76.10 | 88.30 | |||||||||||||
MIN | 50.61 | 60.50 | 66.52 | 71.53 | 80.94 | 92.03 | 100.06 | 97.29 | 88.93 | 78.90 | 66.43 | 60.03 | 82.09 | |||||||||||||
YRS | 89 | 90 | 90 | 89 | 89 | 89 | 88 | 89 | 89 | 86 | 85 | 87 | 74 |