YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 97.69 | b | 94.39 | b | 81.00 | c | 65.65 | d | 59.69 | b | 79.69 | g |
1949 | 48.57 | a | 61.60 | c | 70.84 | 80.17 | 89.71 | 97.52 | a | 97.03 | 97.26 | 94.03 | 81.13 | 76.23 | 59.39 | 79.46 | ||||||||||
1950 | 60.16 | 68.93 | a | 74.03 | 85.14 | a | 88.29 | 99.03 | 95.03 | b | 97.42 | 92.30 | 91.27 | a | 75.30 | 68.35 | 82.94 | |||||||||
1951 | 61.37 | a | 63.96 | 70.29 | 76.50 | 88.23 | 97.17 | 102.00 | 95.60 | a | 94.33 | 82.77 | 66.13 | 59.03 | a | 79.78 | ||||||||||
1952 | 61.07 | a | 62.57 | a | 63.17 | a | 78.18 | b | 90.03 | b | 97.38 | d | 98.66 | b | 95.96 | c | 94.55 | a | 86.93 | d | 65.36 | b | 59.03 | a | 79.41 | |
1953 | 64.90 | 64.27 | b | 71.37 | a | 78.86 | a | 83.07 | b | 99.79 | b | 98.17 | b | 97.26 | 96.20 | 84.90 | 73.33 | 58.29 | 80.87 | |||||||
1954 | 62.87 | a | 72.74 | a | 68.90 | 85.37 | 89.68 | 97.83 | 99.16 | 91.84 | 93.33 | 85.94 | 75.30 | 63.29 | 82.19 | |||||||||||
1955 | 56.10 | 60.86 | 72.16 | 80.13 | 87.26 | 96.63 | 96.68 | 94.03 | 93.67 | 85.77 | 70.83 | 65.61 | 79.98 | |||||||||||||
1956 | 64.74 | 60.21 | 75.35 | 77.70 | 91.55 | 101.13 | 97.13 | 94.94 | 97.13 | 84.97 | 67.40 | 60.94 | 81.10 | |||||||||||||
1957 | 60.87 | 72.00 | 70.55 | 79.17 | 84.19 | 97.47 | 97.55 | 93.35 | 92.43 | 76.77 | 63.77 | 61.65 | 79.15 | |||||||||||||
1958 | 60.42 | 66.11 | 62.35 | 76.60 | 91.65 | 99.23 | 97.97 | 95.87 | 89.70 | 79.52 | 68.87 | 67.23 | 79.63 | |||||||||||||
1959 | 65.32 | 64.46 | 72.58 | 82.60 | 88.52 | 100.17 | 98.23 | 91.61 | 92.97 | 82.81 | 66.03 | 59.61 | 80.41 | |||||||||||||
1960 | 54.26 | 59.41 | 75.16 | 82.07 | 88.77 | 100.67 | 99.19 | 97.58 | 95.47 | 80.10 | 71.77 | 57.84 | 80.19 | |||||||||||||
1961 | 59.45 | 65.54 | 71.26 | 80.63 | 89.87 | 99.17 | 100.13 | 95.06 | 89.03 | 80.65 | 62.03 | 57.29 | 79.18 | |||||||||||||
1962 | 56.03 | 66.54 | 65.65 | 85.30 | 88.77 | 97.47 | 96.94 | 100.42 | 90.80 | 81.97 | 72.70 | 60.84 | 80.28 | |||||||||||||
1963 | 56.52 | 68.39 | 70.94 | 79.27 | 92.00 | 96.07 | 99.10 | 91.55 | 92.60 | 85.45 | 69.27 | 61.74 | 80.24 | |||||||||||||
1964 | 57.45 | 59.93 | 66.68 | 77.23 | 88.58 | 95.47 | 98.29 | 92.90 | 87.33 | 84.84 | 65.67 | 58.97 | 77.78 | |||||||||||||
1965 | 60.45 | 62.07 | 67.10 | 78.13 | 86.58 | 93.03 | 96.32 | 95.90 | 88.20 | 84.10 | 72.83 | 57.52 | 78.52 | |||||||||||||
1966 | 55.87 | 57.43 | 72.58 | 81.60 | 90.06 | 95.77 | 99.48 | 94.94 | 87.67 | 80.55 | 72.23 | 60.84 | 79.08 | |||||||||||||
1967 | 60.84 | 67.68 | 75.35 | 78.20 | 84.74 | 92.97 | 95.77 | 92.90 | 87.37 | 82.19 | 70.77 | 53.45 | 78.52 | |||||||||||||
1968 | 57.61 | 66.24 | 67.19 | 74.50 | 86.65 | 96.53 | 94.26 | 90.90 | 90.73 | 84.26 | 68.03 | 56.65 | 77.80 | |||||||||||||
1969 | 62.55 | 63.04 | 65.74 | 80.63 | 88.81 | 95.97 | 98.00 | 98.84 | 91.70 | 79.58 | 66.60 | 60.71 | 79.35 | |||||||||||||
1970 | 58.74 | 64.93 | 66.42 | 74.03 | 88.10 | 97.17 | 99.87 | 97.52 | 88.00 | 76.19 | 71.40 | 60.83 | a | 78.60 | ||||||||||||
1971 | 61.71 | 65.93 | 74.03 | 77.70 | 85.55 | 97.33 | 101.90 | 94.06 | 92.47 | 76.17 | a | 67.60 | 54.26 | 79.06 | ||||||||||||
1972 | 61.42 | 68.55 | 80.97 | 82.20 | 88.71 | 95.77 | 99.52 | 95.43 | a | 90.33 | 78.06 | 62.83 | 57.97 | 80.15 | ||||||||||||
1973 | 55.94 | 59.54 | 62.45 | 72.97 | 86.97 | 95.33 | 98.00 | 98.03 | 92.87 | 85.19 | 71.20 | 63.13 | 78.47 | |||||||||||||
1974 | 59.52 | 63.96 | 73.97 | 79.33 | 90.39 | 102.10 | 95.68 | 94.61 | 88.27 | 78.48 | 67.83 | 56.65 | 79.23 | |||||||||||||
1975 | 58.19 | 62.25 | 68.13 | 73.17 | 84.94 | 96.77 | 95.94 | 96.35 | 88.43 | 82.81 | 70.67 | 60.42 | 78.17 | |||||||||||||
1976 | 59.68 | 66.97 | 69.87 | 77.37 | 86.16 | 98.07 | 96.81 | 97.23 | 88.40 | 76.42 | 67.23 | 60.29 | 78.71 | |||||||||||||
1977 | 57.06 | 67.04 | 66.52 | 79.07 | 84.35 | 97.70 | 97.68 | 97.97 | 92.50 | 82.90 | 72.50 | 64.52 | 79.98 | |||||||||||||
1978 | 58.16 | 61.75 | 70.58 | 79.67 | 87.37 | a | 100.73 | 101.13 | 96.03 | 90.13 | 83.19 | 66.13 | 54.68 | 79.13 | ||||||||||||
1979 | 52.87 | 62.79 | 67.45 | 79.13 | 84.19 | 94.70 | 98.13 | 94.68 | 93.53 | 86.35 | 66.13 | 63.03 | 78.58 | |||||||||||||
1980 | 59.61 | 64.10 | 66.68 | 77.90 | 85.23 | 100.43 | 100.87 | 95.10 | 93.60 | 80.71 | 69.47 | 66.97 | 80.06 | |||||||||||||
1981 | 61.94 | 68.21 | 67.55 | 82.97 | 88.35 | 99.63 | 97.13 | 96.42 | 92.40 | 81.58 | 74.27 | 65.10 | 81.30 | |||||||||||||
1982 | 58.61 | 64.07 | 69.06 | 79.63 | 86.00 | 97.37 | 97.71 | 95.90 | 92.40 | 82.48 | 65.37 | 57.42 | 78.84 | |||||||||||||
1983 | 60.32 | 62.71 | 66.39 | 72.80 | 87.90 | 96.67 | 99.23 | 97.35 | 93.50 | 78.81 | 67.03 | 59.81 | 78.54 | |||||||||||||
1984 | 60.06 | 64.83 | 72.90 | 77.07 | a | 92.84 | 96.20 | 97.55 | 93.97 | 91.83 | 75.94 | 68.73 | 58.42 | 79.20 | ||||||||||||
1985 | 54.90 | 61.79 | 69.55 | 80.70 | 89.16 | 99.36 | b | 99.60 | a | 94.73 | a | 88.70 | 77.77 | 68.07 | a | 61.74 | 78.84 | |||||||||
1986 | 67.23 | 65.46 | 73.29 | 80.70 | 89.52 | 97.77 | 93.87 | 97.10 | 90.43 | 79.58 | 66.30 | 58.16 | 79.95 | |||||||||||||
1987 | 59.52 | 62.29 | 67.26 | 79.63 | 86.00 | 98.03 | 98.55 | 94.00 | 90.03 | 85.87 | a | 68.67 | 56.00 | 78.82 | ||||||||||||
1988 | 59.03 | 65.93 | 72.90 | 76.83 | 88.48 | 98.50 | 99.42 | 92.87 | 90.60 | 84.81 | 70.70 | 58.42 | 79.87 | |||||||||||||
1989 | 59.35 | 67.89 | 78.55 | 88.52 | a | 92.39 | 98.93 | 99.26 | 95.45 | 93.60 | 80.90 | 72.20 | 60.71 | 82.31 | ||||||||||||
1990 | 60.52 | 62.18 | 72.20 | a | 82.90 | 88.55 | 101.90 | 94.81 | 92.94 | 90.67 | 82.10 | 70.17 | 56.71 | 79.64 | ||||||||||||
1991 | 58.65 | 68.43 | 64.84 | 79.60 | 89.68 | 95.27 | 97.94 | 94.65 | 89.80 | 86.45 | 67.20 | 58.48 | 79.25 | |||||||||||||
1992 | 55.68 | 64.52 | 70.16 | 82.83 | 85.90 | 95.73 | 96.10 | 94.06 | 93.17 | 85.65 | 66.70 | 56.06 | 78.88 | |||||||||||||
1993 | 59.29 | 62.21 | 72.42 | 82.17 | 91.06 | 99.33 | 97.39 | 95.32 | 93.03 | 80.90 | a | 67.23 | 61.39 | 80.15 | ||||||||||||
1994 | 64.29 | 64.54 | 73.48 | 81.70 | 89.23 | 102.87 | 100.55 | 98.03 | 92.93 | 81.23 | 65.37 | 60.45 | 81.22 | |||||||||||||
1995 | 57.52 | 69.00 | 72.03 | 78.10 | 86.26 | 97.13 | 100.06 | 98.68 | 92.93 | 87.10 | 75.10 | 64.03 | 81.50 | |||||||||||||
1996 | 65.16 | 69.62 | 73.42 | 83.30 | 94.90 | 100.77 | 100.00 | 96.68 | 87.87 | 82.35 | 71.33 | 63.35 | 82.40 | |||||||||||||
1997 | 58.57 | a | 65.96 | 76.97 | 78.67 | 92.74 | 97.80 | 98.97 | 96.65 | 95.43 | 82.39 | 71.70 | 56.48 | 81.03 | ||||||||||||
1998 | 63.16 | 60.64 | 68.42 | 75.33 | 89.84 | 97.80 | 99.55 | 98.94 | 96.70 | 84.10 | 72.60 | 62.26 | 80.78 | |||||||||||||
1999 | 66.35 | 70.64 | 77.23 | 77.03 | 90.10 | 96.30 | 94.23 | 96.29 | 92.97 | 87.23 | 78.03 | 61.74 | 82.34 | |||||||||||||
2000 | 66.03 | 70.10 | 73.10 | 85.20 | 95.74 | 97.77 | 100.55 | 98.06 | 96.60 | 78.52 | 61.83 | 63.35 | 82.24 | |||||||||||||
2001 | 57.97 | 64.82 | 72.52 | 81.10 | 93.32 | 100.77 | 97.16 | 97.94 | 95.80 | 86.26 | 73.63 | 60.71 | 81.83 | |||||||||||||
2002 | 62.74 | 67.18 | 73.83 | a | 87.30 | 92.13 | 104.07 | 100.23 | 98.58 | 95.30 | 81.77 | a | 70.57 | 59.06 | 82.73 | |||||||||||
2003 | 67.42 | 64.11 | 69.10 | 79.53 | 91.55 | 98.83 | 102.13 | 97.35 | 93.77 | 88.00 | 68.77 | 61.35 | 81.83 | |||||||||||||
2004 | 60.39 | 62.34 | 75.23 | 78.03 | 91.71 | 98.43 | 96.77 | 93.13 | 89.87 | 80.71 | 64.00 | 58.35 | 79.08 | |||||||||||||
2005 | 61.03 | 60.14 | 68.71 | 79.93 | 90.23 | a | 97.67 | 101.39 | 94.29 | 93.90 | 83.03 | 73.17 | 63.16 | 80.55 | ||||||||||||
2006 | 64.00 | 69.14 | 70.10 | 83.63 | 93.84 | 101.14 | a | 98.19 | 90.23 | 86.90 | 80.77 | a | 74.67 | 60.32 | 81.08 | |||||||||||
2007 | 54.35 | 64.86 | 73.55 | b | 81.27 | 91.68 | 98.27 | 98.68 | 96.71 | 94.00 | 85.26 | 74.83 | 57.55 | 80.92 | ||||||||||||
2008 | 59.58 | 65.72 | 74.35 | 81.17 | 87.26 | 98.50 | 93.35 | 93.13 | 89.57 | 83.58 | 72.43 | 59.77 | 79.87 | |||||||||||||
2009 | 63.97 | 68.86 | 74.87 | 79.50 | 91.00 | 93.87 | 99.97 | 97.87 | 92.17 | 81.13 | 73.93 | 57.23 | 81.20 | |||||||||||||
2010 | 58.00 | 61.43 | 69.19 | 79.33 | 87.55 | 98.27 | 96.29 | 94.55 | 92.53 | 83.97 | 70.13 | 66.03 | 79.77 | |||||||||||||
2011 | 60.84 | 62.96 | 77.77 | 83.57 | 87.06 | 100.13 | 97.81 | 97.68 | 92.57 | 84.77 | 69.50 | 55.58 | 80.85 | |||||||||||||
2012 | 63.48 | 66.03 | 72.45 | b | 84.47 | 92.61 | 101.60 | 96.45 | 96.97 | 91.23 | 86.31 | b | 75.10 | 61.81 | 82.38 | |||||||||||
2013 | 59.13 | a | 62.21 | 77.10 | 82.53 | 90.77 | a | 101.30 | c | 95.13 | 95.27 | a | 91.10 | 82.42 | 71.17 | 60.10 | 80.68 | |||||||||
2014 | 65.68 | 71.39 | 75.32 | 82.77 | 90.65 | 101.43 | 97.97 | 93.06 | 90.20 | 85.10 | 70.47 | 61.97 | 82.17 | |||||||||||||
2015 | 60.87 | 71.79 | 77.10 | 80.63 | 86.61 | 101.53 | 95.29 | 98.81 | 92.07 | a | 82.81 | 69.63 | 59.48 | 81.39 | ||||||||||||
2016 | 59.45 | 73.24 | 78.39 | 80.80 | 88.93 | a | 100.77 | 99.55 | 94.26 | 90.07 | 87.93 | a | 71.93 | 62.90 | 82.35 | |||||||||||
2017 | 60.23 | 68.79 | 80.52 | 84.83 | 90.74 | 103.53 | ----- | z | 96.52 | 94.77 | 88.16 | 79.53 | ----- | z | 84.76 | b | ||||||||||
2018 | 67.06 | 67.75 | 75.74 | 87.90 | 95.50 | a | 102.97 | a | 99.81 | 97.29 | 95.23 | 77.70 | a | ----- | z | 60.84 | 84.34 | a | ||||||||
2019 | 60.16 | 61.07 | 73.94 | 83.53 | ----- | z | 100.23 | 102.03 | 99.71 | ----- | z | 84.47 | a | 70.28 | a | 59.00 | b | 79.44 | b | |||||||
2020 | 62.55 | 65.45 | 72.71 | 84.27 | 96.77 | 101.62 | a | ----- | z | 103.45 | 95.67 | 90.57 | a | 75.93 | 61.71 | 82.79 | a | |||||||||
2021 | 62.84 | 68.36 | 72.84 | 84.77 | 94.29 | ----- | z | 97.65 | 96.81 | 93.23 | ----- | z | 77.33 | 66.45 | b | 81.46 | b | |||||||||
2022 | 62.68 | 67.25 | 75.87 | 86.63 | 95.77 | 101.10 | 102.13 | 95.90 | 95.90 | a | 80.84 | 68.90 | 61.06 | 82.84 | ||||||||||||
2023 | 59.80 | a | 64.36 | 71.29 | 84.90 | 91.83 | a | 99.63 | 107.45 | 100.42 | 96.63 | 87.68 | 74.37 | 63.97 | 83.53 | |||||||||||
2024 | 60.84 | 67.62 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 64.23 | j | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 60.28 | 65.26 | 71.61 | 80.51 | 89.40 | 98.56 | 98.34 | 95.91 | 92.17 | 82.84 | 70.11 | 60.39 | 80.26 | |||||||||||||
S.D. | 3.50 | 3.47 | 4.10 | 3.48 | 3.04 | 2.43 | 2.34 | 2.38 | 2.61 | 3.41 | 3.87 | 3.12 | 1.41 | |||||||||||||
SKEW | -0.28 | 0.19 | -0.10 | 0.01 | 0.26 | 0.02 | 0.60 | 0.10 | -0.16 | -0.01 | 0.06 | 0.28 | 0.37 | |||||||||||||
MAX | 67.42 | 73.24 | 80.97 | 88.52 | 96.77 | 104.07 | 107.45 | 103.45 | 97.13 | 91.27 | 79.53 | 68.35 | 83.53 | |||||||||||||
MIN | 48.57 | 57.43 | 62.35 | 72.80 | 83.07 | 92.97 | 93.35 | 90.23 | 86.90 | 75.94 | 61.83 | 53.45 | 77.78 | |||||||||||||
YRS | 76 | 76 | 75 | 75 | 74 | 74 | 73 | 76 | 75 | 75 | 75 | 75 | 70 |