YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1943 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 58.71 | 58.71 | k | |
1944 | 59.87 | 60.62 | 71.06 | 77.03 | 88.03 | 91.30 | 102.29 | 103.03 | 96.52 | a | 84.87 | 65.43 | 62.35 | 80.20 | ||||||||||||
1945 | 62.32 | 64.50 | 64.84 | 80.31 | a | 87.37 | a | 95.90 | 105.74 | 98.37 | a | 95.07 | 81.55 | 69.10 | 59.81 | 80.41 | ||||||||||
1946 | 62.35 | 65.64 | 71.23 | 84.80 | 89.13 | 98.93 | 101.90 | 102.35 | 95.83 | 78.68 | 65.07 | 63.35 | 81.61 | |||||||||||||
1947 | 62.58 | 70.96 | 74.87 | 80.93 | 93.48 | 94.43 | 104.03 | 99.29 | 98.80 | 82.35 | 65.63 | 59.58 | 82.25 | |||||||||||||
1948 | 65.48 | 62.93 | 66.00 | 79.67 | 86.65 | 96.90 | 103.65 | 102.48 | 96.47 | 83.00 | 69.27 | 57.68 | 80.85 | |||||||||||||
1949 | 45.61 | 60.79 | 69.58 | 84.40 | 86.48 | 99.03 | 103.97 | 101.10 | 99.07 | 80.55 | 78.03 | 60.35 | 80.75 | |||||||||||||
1950 | 58.03 | 70.00 | 73.84 | 84.57 | 88.35 | 96.00 | 102.48 | 102.77 | 92.17 | 88.26 | 76.17 | 70.23 | 83.57 | |||||||||||||
1951 | 61.61 | 64.96 | 72.23 | 79.13 | 88.52 | 97.13 | 103.68 | 101.00 | 98.90 | 82.00 | 67.63 | 58.52 | 81.28 | |||||||||||||
1952 | 55.87 | 65.21 | 65.32 | 79.10 | 91.52 | 93.67 | 102.84 | 103.87 | 95.27 | 90.26 | 65.43 | 59.61 | 80.66 | |||||||||||||
1953 | 67.81 | 65.61 | 72.77 | 78.93 | 79.42 | 94.83 | 105.52 | 101.06 | 98.37 | 83.45 | 71.80 | 63.13 | 81.89 | |||||||||||||
1954 | 63.35 | 73.04 | 67.61 | 85.57 | 93.16 | 95.27 | 104.90 | 99.35 | 96.33 | 85.65 | 73.10 | 59.71 | 83.09 | |||||||||||||
1955 | 56.13 | 61.43 | 73.06 | 76.23 | 86.26 | 96.67 | 101.23 | 102.39 | 97.63 | 87.39 | 71.17 | 64.58 | 81.18 | |||||||||||||
1956 | 64.87 | 63.34 | 75.03 | 78.20 | 88.58 | 99.60 | 101.97 | 100.39 | 99.40 | 80.87 | 70.60 | 65.81 | 82.39 | |||||||||||||
1957 | 55.77 | 71.43 | 72.87 | 79.50 | 84.16 | 100.00 | 103.48 | 100.58 | 95.90 | 76.26 | 66.17 | 63.19 | 80.78 | |||||||||||||
1958 | 64.10 | 67.96 | 64.55 | 77.53 | 91.97 | 96.03 | 101.71 | 102.00 | 95.57 | 86.68 | 69.90 | 68.68 | 82.22 | |||||||||||||
1959 | 65.48 | 63.25 | 76.48 | 85.90 | 85.58 | 100.53 | 107.26 | 100.10 | 91.87 | 85.71 | 73.07 | 61.26 | 83.04 | |||||||||||||
1960 | 56.90 | 62.66 | 77.13 | 81.70 | 88.94 | 103.20 | 106.16 | 102.74 | 97.20 | 82.52 | 68.53 | 61.68 | 82.45 | |||||||||||||
1961 | 64.87 | 68.36 | 73.03 | 82.70 | 85.77 | 101.97 | 106.74 | 100.45 | 92.17 | 81.32 | 66.97 | 59.52 | 81.99 | |||||||||||||
1962 | 62.23 | 64.25 | 66.90 | 85.57 | 83.94 | 96.93 | 101.58 | 102.90 | 97.10 | 84.42 | 74.40 | 64.32 | 82.05 | |||||||||||||
1963 | 59.42 | 73.64 | 70.48 | 74.07 | 89.58 | 91.67 | 102.87 | 99.23 | 94.37 | 83.58 | 69.83 | 63.71 | 81.04 | |||||||||||||
1964 | 58.97 | 62.28 | 67.19 | 75.07 | 83.81 | 93.67 | 102.58 | 100.35 | 92.40 | 87.29 | 62.47 | 61.29 | 78.95 | |||||||||||||
1965 | 61.19 | 65.07 | 67.45 | 73.00 | 82.84 | 89.90 | 100.45 | 99.52 | 87.73 | 87.42 | 66.97 | 55.39 | 78.08 | |||||||||||||
1966 | 55.97 | 60.18 | 72.23 | 81.20 | 90.32 | 96.10 | 100.77 | 102.94 | 93.10 | 81.42 | 68.70 | 59.94 | 80.24 | |||||||||||||
1967 | 61.39 | 66.96 | 70.71 | 66.80 | 85.03 | 92.17 | 103.45 | 103.03 | 90.43 | 85.00 | 71.20 | 54.35 | 79.21 | |||||||||||||
1968 | 59.94 | 69.52 | 70.97 | 76.07 | 87.23 | 98.73 | 101.74 | 96.61 | 95.10 | 82.94 | 69.60 | 55.55 | 80.33 | |||||||||||||
1969 | 61.77 | 59.57 | 68.39 | 78.23 | 90.13 | 93.67 | 103.00 | 105.94 | 97.83 | 77.58 | 69.70 | 64.06 | 80.82 | |||||||||||||
1970 | 61.16 | 67.39 | 70.13 | 72.93 | 89.74 | 97.97 | 105.84 | 104.48 | 93.00 | 79.39 | 69.77 | 57.52 | 80.78 | |||||||||||||
1971 | 62.00 | 66.57 | 72.42 | 76.10 | 80.55 | 96.47 | 106.13 | 103.55 | 93.80 | 78.03 | 67.77 | 55.71 | 79.92 | |||||||||||||
1972 | 60.32 | 69.86 | 81.06 | 79.67 | 88.77 | 97.40 | 107.10 | 100.26 | 91.30 | 74.13 | 64.13 | 56.06 | 80.84 | |||||||||||||
1973 | 56.06 | 61.32 | 63.32 | 75.13 | 90.65 | 100.07 | 106.00 | 100.71 | 93.10 | 82.74 | 69.43 | 64.03 | 80.21 | |||||||||||||
1974 | 57.74 | 66.68 | 74.10 | 78.20 | 90.42 | 103.33 | 103.16 | 102.65 | 100.10 | 84.65 | 71.33 | 60.87 | 82.77 | |||||||||||||
1975 | 64.87 | 64.61 | 66.35 | 70.57 | 87.13 | 97.40 | 105.23 | 102.90 | 96.43 | 79.94 | 68.93 | 66.35 | 80.89 | |||||||||||||
1976 | 66.32 | 67.97 | 70.94 | 76.70 | 92.19 | 98.10 | 103.90 | 99.65 | 89.20 | 82.81 | 74.03 | 63.81 | 82.13 | |||||||||||||
1977 | 60.58 | 72.32 | 68.26 | 84.93 | 79.45 | 102.40 | 106.58 | 99.74 | 91.13 | 83.29 | 71.27 | 63.87 | 81.99 | |||||||||||||
1978 | 56.74 | 64.39 | 70.58 | 73.53 | 87.19 | 99.23 | 104.97 | 102.03 | 91.23 | 88.23 | 66.43 | 56.65 | 80.10 | |||||||||||||
1979 | 53.23 | 62.43 | 67.39 | 79.03 | 89.06 | 99.80 | 105.17 | a | 98.00 | 100.03 | 84.48 | 67.97 | 63.42 | 80.83 | ||||||||||||
1980 | 63.48 | 66.59 | 66.13 | 77.50 | 80.84 | 96.80 | 105.29 | 102.55 | 96.13 | 86.29 | 74.77 | 69.13 | 82.12 | |||||||||||||
1981 | 65.26 | 69.21 | 70.58 | 84.37 | 88.90 | 103.53 | 106.03 | 104.84 | 96.27 | 77.61 | 72.40 | 67.00 | 83.83 | |||||||||||||
1982 | 60.32 | 67.82 | 68.84 | 77.53 | 87.45 | 93.93 | 99.87 | 99.77 | a | 90.10 | 82.13 | 68.47 | 58.81 | 79.59 | ||||||||||||
1983 | 61.97 | 62.75 | 65.97 | 70.80 | 87.16 | 95.13 | 100.42 | 94.65 | 94.83 | 81.77 | 69.47 | 62.52 | 78.95 | |||||||||||||
1984 | 63.13 | 66.28 | 72.39 | 76.77 | 95.55 | 97.76 | a | 102.26 | 101.11 | v | 98.27 | 78.90 | 68.73 | 56.77 | 79.71 | a | ||||||||||
1985 | 58.23 | 63.04 | 67.26 | 82.97 | 88.19 | 102.23 | 105.13 | 103.35 | 87.67 | 82.35 | 65.83 | 61.84 | 80.67 | |||||||||||||
1986 | 66.10 | 68.04 | 76.19 | 78.80 | 90.26 | 101.30 | 101.19 | 106.03 | 88.17 | 79.87 | 70.83 | 58.77 | 82.13 | |||||||||||||
1987 | 57.84 | 65.39 | 67.93 | a | 85.23 | 87.58 | 100.63 | 99.71 | 103.94 | 96.30 | 85.55 | 66.63 | 54.00 | 80.89 | ||||||||||||
1988 | 58.77 | 69.07 | 74.06 | 78.13 | 87.06 | 96.80 | 106.68 | 101.58 | 94.47 | 91.03 | 70.03 | 59.58 | 82.27 | |||||||||||||
1989 | 58.55 | 63.96 | 77.03 | 88.10 | 89.13 | 99.17 | 107.61 | 100.58 | 94.57 | 81.87 | 73.90 | 64.10 | 83.21 | |||||||||||||
1990 | 60.65 | 63.21 | 73.87 | 81.67 | 86.13 | 99.70 | 104.94 | 100.77 | 95.60 | 85.45 | 69.23 | 55.10 | 81.36 | |||||||||||||
1991 | 58.61 | 72.64 | 64.26 | 77.23 | 83.42 | 95.63 | 104.29 | 101.87 | 97.07 | 88.68 | 72.07 | 60.35 | 81.34 | |||||||||||||
1992 | 60.68 | 66.59 | 67.84 | 84.60 | 93.81 | 96.97 | 101.29 | 104.10 | 99.17 | 85.58 | 68.03 | 55.58 | 82.02 | |||||||||||||
1993 | 55.97 | 61.25 | 74.65 | 81.33 | 89.42 | 96.66 | a | 102.06 | 102.42 | 97.10 | 84.39 | 67.60 | 62.16 | 81.25 | ||||||||||||
1994 | 64.90 | 61.11 | 76.71 | 81.13 | 88.84 | 104.83 | 108.00 | 106.10 | 96.77 | 81.90 | 61.87 | 60.65 | 82.73 | |||||||||||||
1995 | 58.00 | 73.32 | 71.48 | 78.13 | 83.32 | c | 94.97 | 106.00 | 106.00 | 100.10 | 86.61 | 77.67 | 63.94 | 83.30 | ||||||||||||
1996 | 65.94 | 68.21 | 74.00 | 82.97 | 90.58 | 101.30 | 107.77 | 106.52 | 95.20 | 81.48 | 70.83 | 62.35 | 83.93 | |||||||||||||
1997 | 61.42 | 66.21 | 80.06 | 79.63 | 96.03 | 96.20 | 102.45 | 105.00 | 95.07 | 81.26 | 70.27 | 57.61 | 82.60 | |||||||||||||
1998 | 62.45 | 59.89 | 69.61 | 74.47 | 80.32 | 92.93 | 106.71 | 106.58 | 91.83 | 81.06 | 70.53 | 62.00 | 79.87 | |||||||||||||
1999 | 66.10 | 67.54 | 71.94 | 72.97 | 88.16 | 98.13 | 102.16 | 102.45 | 96.90 | 88.84 | 73.67 | 64.23 | 82.76 | |||||||||||||
2000 | 65.94 | 66.45 | 72.87 | 85.67 | 94.45 | 102.33 | 106.03 | 102.42 | 95.20 | 79.32 | 63.59 | a | 63.39 | 83.14 | ||||||||||||
2001 | 56.58 | 59.75 | 73.48 | 75.93 | 96.45 | 101.17 | 101.81 | 105.06 | 98.53 | 86.58 | 70.53 | 57.71 | 81.97 | |||||||||||||
2002 | 59.52 | 68.57 | 70.55 | 81.20 | 88.65 | 101.53 | 106.10 | 103.90 | 95.77 | 80.77 | 70.63 | 59.48 | 82.22 | |||||||||||||
2003 | 68.68 | 62.54 | 72.39 | 73.30 | 90.00 | 101.03 | 107.65 | 103.32 | 99.80 | 90.58 | 63.47 | 59.94 | 82.72 | |||||||||||||
2004 | 60.81 | 60.10 | 79.35 | 81.23 | 90.74 | 100.53 | 105.61 | 102.48 | 94.63 | 79.26 | 64.03 | 59.84 | 81.55 | |||||||||||||
2005 | 59.45 | 61.36 | 69.55 | 77.47 | 90.39 | 95.97 | 107.03 | 103.26 | 93.00 | 81.71 | 72.33 | 63.48 | 81.25 | |||||||||||||
2006 | 63.32 | 68.36 | 65.90 | 77.43 | 93.23 | 103.07 | 107.77 | 103.45 | 95.27 | 79.61 | 72.30 | 60.74 | 82.54 | |||||||||||||
2007 | 59.65 | 66.50 | 78.90 | 82.37 | 92.23 | 101.33 | 106.61 | 104.94 | 92.70 | 81.10 | 73.27 | 56.87 | 83.04 | |||||||||||||
2008 | 56.94 | 66.28 | 73.77 | 80.90 | 85.71 | 101.47 | 105.71 | 105.32 | 98.53 | 84.58 | 72.87 | 56.68 | 82.40 | |||||||||||||
2009 | 64.39 | c | 62.61 | 71.87 | 79.00 | 95.90 | 92.36 | b | 109.21 | q | 102.94 | 99.13 | 80.00 | 70.97 | 56.77 | 79.63 | a | |||||||||
2010 | 59.61 | 63.04 | 70.00 | 75.30 | 83.19 | 99.13 | 106.87 | 102.77 | 98.33 | 80.52 | 67.37 | 61.42 | 80.63 | |||||||||||||
2011 | 61.68 | 62.21 | 72.00 | 78.13 | 83.94 | 96.93 | 102.74 | 105.77 | 97.63 | 85.29 | 65.90 | 58.87 | 80.93 | |||||||||||||
2012 | 65.26 | 66.31 | 73.45 | 82.27 | 93.10 | 100.67 | 102.48 | 105.03 | 98.97 | 84.94 | 72.67 | 60.19 | 83.78 | |||||||||||||
2013 | 58.03 | 65.07 | 77.81 | 83.90 | 90.29 | 103.33 | 105.90 | 101.48 | 94.80 | 79.84 | 68.30 | 60.07 | a | 82.40 | ||||||||||||
2014 | 67.68 | 72.29 | 75.10 | 82.53 | 90.48 | 101.63 | 105.23 | 100.74 | 97.27 | 87.84 | 72.80 | 59.13 | 84.39 | |||||||||||||
2015 | 62.90 | 73.75 | 79.71 | 80.87 | 85.68 | 102.83 | 99.52 | 106.32 | 97.73 | 84.58 | 65.87 | 58.45 | 83.18 | |||||||||||||
2016 | 59.84 | 71.86 | 75.77 | 79.97 | 86.52 | 104.80 | 107.45 | 104.29 | 93.77 | 83.29 | 71.93 | 59.58 | 83.26 | |||||||||||||
2017 | 57.32 | 66.18 | 77.43 | a | 81.22 | c | 89.23 | 103.50 | 107.94 | 103.84 | 92.77 | 85.10 | 74.73 | 65.35 | 83.72 | |||||||||||
2018 | 66.32 | 66.79 | 70.23 | 83.97 | 89.32 | 101.80 | 107.81 | 105.35 | 99.63 | 81.00 | b | 71.30 | 60.00 | 83.63 | ||||||||||||
2019 | 60.19 | 58.39 | 69.77 | 82.57 | 81.13 | 99.93 | 104.84 | 105.61 | 94.73 | 81.32 | 70.88 | e | 56.68 | 80.50 | ||||||||||||
2020 | 64.26 | 70.17 | 67.74 | 78.27 | 92.32 | 98.52 | a | 107.26 | 108.32 | 100.83 | 89.84 | 71.37 | 62.87 | 84.31 | ||||||||||||
2021 | 62.52 | 67.18 | 70.55 | 84.67 | 91.26 | 104.80 | 106.83 | b | 105.61 | 98.77 | 79.94 | 77.03 | 60.65 | 84.15 | ||||||||||||
2022 | 62.39 | 66.36 | 75.84 | 82.77 | 89.93 | a | 101.07 | 105.77 | a | 105.10 | b | 98.07 | 85.97 | 65.07 | 60.68 | 83.25 | ||||||||||
2023 | 58.00 | 61.29 | 64.45 | 81.30 | 88.26 | 93.40 | 108.68 | 101.93 | a | 93.30 | 83.71 | 69.47 | 63.19 | 80.58 | ||||||||||||
2024 | 62.26 | 63.17 | 68.16 | 75.59 | m | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 64.53 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 61.05 | 65.76 | 71.45 | 79.49 | 88.32 | 98.43 | 104.48 | 102.61 | 95.51 | 83.23 | 69.73 | 60.78 | 81.75 | |||||||||||||
S.D. | 3.80 | 3.79 | 4.12 | 4.11 | 3.86 | 3.53 | 2.38 | 2.49 | 3.10 | 3.46 | 3.47 | 3.43 | 1.39 | |||||||||||||
SKEW | -0.69 | 0.27 | 0.19 | -0.42 | -0.25 | -0.21 | -0.26 | -0.39 | -0.56 | 0.11 | 0.03 | 0.32 | -0.18 | |||||||||||||
MAX | 68.68 | 73.75 | 81.06 | 88.10 | 96.45 | 104.83 | 108.68 | 108.32 | 100.83 | 91.03 | 78.03 | 70.23 | 84.39 | |||||||||||||
MIN | 45.61 | 58.39 | 63.32 | 66.80 | 79.42 | 89.90 | 99.52 | 94.65 | 87.67 | 74.13 | 61.87 | 54.00 | 78.08 | |||||||||||||
YRS | 81 | 81 | 81 | 80 | 80 | 80 | 79 | 79 | 80 | 80 | 80 | 81 | 78 |