YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1948 | 66.26 | 62.21 | 65.61 | 71.80 | 79.74 | 91.97 | 98.29 | 97.03 | 91.83 | 80.81 | 68.37 | 52.35 | 77.19 | |||||||||||||
1949 | 51.16 | 58.93 | 64.97 | 81.47 | 83.19 | 95.83 | 99.35 | 93.84 | 93.03 | 80.13 | 72.07 | 54.32 | 77.36 | |||||||||||||
1950 | 51.97 | 63.50 | 66.29 | 77.73 | 84.61 | 89.17 | 99.48 | 97.03 | 87.20 | 81.32 | 68.87 | 57.16 | 77.03 | |||||||||||||
1951 | 53.68 | 61.68 | 67.84 | 74.93 | 83.35 | 91.10 | 97.16 | 95.84 | 92.60 | 79.71 | 69.07 | 54.39 | 76.78 | |||||||||||||
1952 | 54.39 | 61.41 | 60.29 | 73.70 | 85.81 | 83.77 | 97.81 | 96.81 | 91.93 | 84.26 | 65.97 | 54.81 | 75.91 | |||||||||||||
1953 | 59.74 | 62.00 | 67.13 | 72.67 | 74.84 | 83.50 | 99.87 | 91.03 | 91.33 | 79.61 | 65.13 | 57.61 | 75.37 | |||||||||||||
1954 | 57.90 | 59.54 | 63.03 | 77.53 | 85.52 | 86.57 | 98.10 | 90.65 | 87.73 | 79.87 | 61.93 | 51.00 | 74.95 | |||||||||||||
1955 | 49.19 | 59.71 | 67.94 | 68.10 | 79.29 | 87.77 | 92.45 | 97.77 | 91.73 | 81.16 | 63.47 | 56.42 | 74.58 | |||||||||||||
1956 | 55.16 | 57.07 | 67.90 | 71.87 | 80.29 | 90.50 | 95.74 | 92.65 | 90.73 | 74.29 | 69.43 | 56.06 | 75.14 | |||||||||||||
1957 | 51.48 | 61.00 | 66.26 | 73.60 | 77.13 | 93.10 | 96.94 | 93.81 | 89.67 | 74.65 | 63.57 | 53.16 | 74.53 | |||||||||||||
1958 | 54.87 | 62.96 | 61.39 | 71.60 | 84.35 | 87.13 | 95.13 | 98.90 | 90.73 | 84.84 | 68.53 | 63.42 | 76.99 | |||||||||||||
1959 | 57.84 | 60.46 | 71.87 | 81.00 | 78.97 | 93.03 | 100.23 | 94.16 | 86.00 | 81.84 | 71.80 | 59.71 | 78.08 | |||||||||||||
1960 | 57.48 | 59.34 | 69.68 | 73.43 | 81.23 | 97.30 | 99.26 | 96.32 | 92.27 | 78.35 | 61.83 | 52.06 | 76.55 | |||||||||||||
1961 | 50.29 | 63.04 | 65.74 | 76.20 | 77.26 | 94.97 | 99.61 | 96.29 | 89.10 | 80.90 | 65.73 | 50.16 | 75.77 | |||||||||||||
1962 | 50.29 | 55.25 | 64.16 | 80.40 | 79.13 | 92.90 | 98.81 | 96.06 | 91.73 | 77.06 | 68.37 | 58.55 | 76.06 | |||||||||||||
1963 | 54.68 | 66.43 | 65.32 | 66.83 | 81.13 | 87.97 | 95.94 | 95.13 | 91.27 | 77.48 | 60.83 | 44.97 | 74.00 | |||||||||||||
1964 | 53.03 | 62.07 | 64.65 | 73.83 | 80.19 | 89.90 | 98.87 | 96.58 | 88.60 | 84.26 | 61.70 | 56.48 | 75.85 | |||||||||||||
1965 | 53.29 | 61.82 | 68.10 | 72.03 | 84.52 | 87.27 | 96.26 | 95.23 | 84.80 | 83.42 | 64.93 | 48.74 | 75.03 | |||||||||||||
1966 | 54.42 | 59.11 | 70.42 | 82.17 | 87.39 | 93.17 | 96.10 | 99.45 | 89.23 | 80.94 | 67.93 | 50.39 | 77.56 | |||||||||||||
1967 | 55.26 | 58.29 | 65.26 | 61.67 | 84.39 | 90.07 | 101.35 | 101.13 | 93.17 | 83.32 | 67.93 | 52.84 | 76.22 | |||||||||||||
1968 | 54.42 | 64.45 | 68.52 | 77.53 | 84.32 | 96.00 | 100.23 | 94.58 | 91.90 | 77.23 | 60.40 | 51.94 | 76.79 | |||||||||||||
1969 | 49.68 | 55.71 | 65.81 | 73.47 | 86.58 | 86.87 | 97.90 | 97.90 | 92.73 | 75.19 | 68.33 | 57.94 | 75.68 | |||||||||||||
1970 | 58.58 | 64.46 | 68.81 | 72.33 | 87.84 | 92.47 | 100.35 | 97.61 | 91.77 | 79.71 | 68.50 | 53.97 | 78.03 | |||||||||||||
1971 | 54.87 | 59.07 | 68.19 | 73.00 | 77.13 | 91.63 | 99.71 | 98.29 | 90.63 | 77.52 | 64.53 | 51.55 | 75.51 | |||||||||||||
1972 | 46.87 | 64.69 | 76.23 | 75.90 | 86.00 | 93.60 | 98.74 | 95.68 | 86.53 | 74.94 | 56.87 | 47.55 | 75.30 | |||||||||||||
1973 | 53.87 | 60.79 | 59.42 | 75.60 | 88.94 | 95.20 | 97.32 | 94.71 | 88.33 | 77.87 | 63.17 | 53.90 | 75.76 | |||||||||||||
1974 | 55.97 | 61.57 | 66.42 | 73.93 | 86.06 | 94.27 | 97.23 | 96.16 | 94.83 | 79.19 | 64.97 | 52.19 | 76.90 | |||||||||||||
1975 | 52.42 | 60.07 | 61.84 | 66.63 | 85.06 | 91.13 | 94.42 | 92.55 | 91.57 | 74.90 | 62.03 | 55.10 | 73.98 | |||||||||||||
1976 | 57.68 | 59.90 | 65.10 | 70.30 | 85.87 | 89.70 | 95.65 | 86.90 | 85.20 | 79.06 | 63.37 | 61.03 | 74.98 | |||||||||||||
1977 | 49.45 | 66.79 | 65.23 | 81.50 | 75.68 | 95.10 | 98.19 | 95.74 | 88.77 | 82.45 | 67.07 | 59.68 | 77.14 | |||||||||||||
1978 | 57.90 | 60.96 | 69.68 | 69.53 | 85.65 | 92.37 | 98.81 | 97.10 | 87.50 | 86.26 | 63.80 | 50.94 | 76.71 | |||||||||||||
1979 | 55.03 | 61.64 | 66.97 | 76.03 | 86.81 | 95.13 | 98.19 | 94.35 | 95.97 | 80.71 | 65.70 | 58.45 | 77.92 | |||||||||||||
1980 | 55.94 | 63.41 | 64.71 | 75.13 | 81.10 | 89.30 | 99.58 | 96.68 | 91.70 | 84.58 | 68.27 | 56.10 | 77.21 | |||||||||||||
1981 | 55.90 | 61.25 | 63.87 | 76.43 | 85.68 | 99.13 | 102.29 | 99.52 | 92.23 | 74.71 | 65.00 | 54.55 | 77.55 | |||||||||||||
1982 | 48.90 | 60.64 | 60.26 | 70.43 | 84.71 | 87.03 | 96.74 | 95.48 | 84.70 | 77.58 | 58.97 | 53.32 | 73.23 | |||||||||||||
1983 | 50.97 | 61.25 | 64.52 | 69.07 | 84.16 | 91.23 | 94.84 | 95.81 | 92.70 | 81.19 | 63.30 | 58.10 | 75.59 | |||||||||||||
1984 | 55.26 | 61.72 | 70.94 | 74.43 | 90.81 | 92.97 | 102.45 | 98.87 | 96.07 | 74.19 | 63.13 | 53.16 | 77.83 | |||||||||||||
1985 | 49.65 | 63.57 | 63.87 | 81.70 | 83.84 | 97.50 | 101.26 | 96.81 | 84.70 | 78.48 | 61.57 | 49.65 | 76.05 | |||||||||||||
1986 | 61.39 | 64.25 | 70.65 | 76.10 | 86.84 | 95.63 | 97.32 | 101.23 | 84.50 | 81.06 | 70.67 | 54.39 | 78.67 | |||||||||||||
1987 | 53.74 | 63.25 | 66.42 | 82.30 | 86.06 | 94.43 | 92.35 | 96.65 | 91.40 | 83.42 | 62.80 | 53.68 | 77.21 | |||||||||||||
1988 | 55.35 | 67.31 | 71.35 | 74.47 | 81.74 | 90.33 | 101.58 | 96.90 | 92.47 | 84.26 | 64.37 | 53.42 | 77.80 | |||||||||||||
1989 | 53.81 | 58.68 | 68.74 | 81.77 | 83.39 | 92.33 | 99.19 | 95.35 | 89.07 | 79.10 | 68.83 | 54.71 | 77.08 | |||||||||||||
1990 | 56.03 | 58.96 | 69.26 | 79.37 | 82.06 | 91.80 | 99.29 | 95.03 | 90.57 | 83.48 | 66.93 | 53.19 | 77.17 | |||||||||||||
1991 | 57.55 | 68.86 | 60.29 | 72.30 | 79.94 | 89.87 | 99.10 | 93.19 | 95.60 | 85.10 | 68.00 | 57.23 | 77.25 | |||||||||||||
1992 | 48.77 | 65.34 | 68.45 | 80.93 | 90.90 | 90.67 | 95.58 | 99.39 | 92.87 | 81.61 | 65.77 | 53.48 | 77.81 | |||||||||||||
1993 | 54.23 | 61.25 | 70.87 | 74.17 | 83.94 | 90.30 | 95.26 | 95.19 | 92.03 | 81.35 | 66.63 | 53.45 | 76.56 | |||||||||||||
1994 | 57.55 | 60.64 | 72.03 | 76.27 | 81.16 | 94.33 | 99.39 | 99.29 | 89.87 | 78.23 | 58.13 | 52.10 | 76.58 | |||||||||||||
1995 | 58.84 | 61.82 | 66.10 | 72.80 | 79.03 | 88.50 | 96.06 | 98.26 | 91.33 | 81.58 | 71.67 | 58.65 | 77.05 | |||||||||||||
1996 | 55.65 | 62.79 | 68.87 | 77.00 | 83.42 | 93.20 | 101.23 | 99.23 | 90.20 | 77.03 | 63.00 | 55.77 | 77.28 | |||||||||||||
1997 | 55.13 | 60.61 | 73.58 | 77.73 | 90.00 | 89.43 | 95.94 | 95.13 | 91.20 | 77.65 | 66.17 | 52.84 | 77.12 | |||||||||||||
1998 | 56.61 | 57.43 | 65.13 | 70.10 | 72.48 | 83.77 | 97.06 | 99.48 | 88.03 | 76.10 | 62.77 | 53.10 | 73.51 | |||||||||||||
1999 | 52.23 | 60.07 | 63.77 | 70.53 | 82.23 | 90.93 | 95.97 | 93.06 | 92.40 | 84.03 | 69.23 | 59.06 | 76.13 | |||||||||||||
2000 | 58.94 | 62.79 | 67.06 | 77.37 | 84.55 | 94.37 | 93.87 | 96.06 | 88.17 | 74.45 | 58.70 | 57.42 | 76.15 | |||||||||||||
2001 | 56.35 | 57.21 | 69.45 | 70.23 | 92.90 | 95.37 | 96.42 | 97.65 | 92.03 | 81.77 | 66.10 | 54.65 | 77.51 | |||||||||||||
2002 | 52.39 | 63.79 | 66.77 | 75.13 | 84.13 | 93.70 | 99.55 | 96.13 | 91.97 | 78.32 | 66.73 | 57.94 | 77.21 | |||||||||||||
2003 | 57.77 | 60.71 | 70.29 | 68.77 | 83.26 | 93.90 | 101.65 | 96.29 | 94.47 | 84.61 | 62.50 | 57.29 | 77.63 | |||||||||||||
2004 | 53.06 | 59.45 | 74.94 | 79.53 | 85.19 | 92.40 | 98.94 | 96.71 | 90.83 | 74.74 | 59.83 | 53.26 | 76.57 | |||||||||||||
2005 | 53.19 | 62.82 | 67.32 | 71.37 | 82.23 | 87.83 | 102.06 | 99.29 | 88.27 | 78.26 | 68.87 | 58.32 | 76.65 | |||||||||||||
2006 | 57.29 | 64.14 | 59.16 | 68.93 | 85.65 | 95.37 | 103.35 | 96.00 | 91.23 | 76.45 | 64.53 | 57.45 | 76.63 | |||||||||||||
2007 | 55.65 | 60.82 | 73.42 | 75.47 | 86.84 | 93.70 | 98.61 | 98.39 | 87.23 | 76.65 | 69.00 | 54.35 | 77.51 | |||||||||||||
2008 | 55.06 | 61.38 | 69.00 | 75.40 | 83.68 | 95.13 | 98.94 | 99.39 | 94.00 | 81.10 | 67.60 | 51.77 | 77.70 | |||||||||||||
2009 | 57.06 | 61.04 | 67.81 | 75.60 | 89.42 | 89.60 | 101.10 | 97.00 | 94.53 | 75.16 | 66.20 | 55.42 | 77.49 | |||||||||||||
2010 | 55.55 | 59.71 | 66.68 | 68.83 | 77.97 | 92.30 | 98.87 | 95.90 | 92.20 | 79.19 | 64.17 | 57.68 | 75.75 | |||||||||||||
2011 | 52.48 | 60.00 | 65.06 | 72.77 | 78.74 | 88.40 | 96.94 | 98.26 | 94.60 | 79.84 | 63.03 | 58.32 | 75.70 | |||||||||||||
2012 | 61.03 | 63.34 | 67.39 | 74.67 | 87.16 | 92.80 | 98.90 | 102.19 | 96.77 | 81.35 | 68.83 | 58.00 | 79.37 | |||||||||||||
2013 | 58.03 | 62.75 | 74.55 | 81.27 | 86.58 | 95.60 | 102.29 | 98.32 | 91.50 | 80.26 | 70.53 | 59.87 | 80.13 | |||||||||||||
2014 | 66.84 | 66.71 | 74.29 | 80.00 | 88.32 | 96.37 | 101.16 | 98.61 | 94.57 | 85.71 | 67.83 | 59.35 | 81.65 | |||||||||||||
2015 | 57.48 | 67.64 | 77.71 | 77.60 | 81.55 | 96.83 | 96.84 | 97.13 | 92.40 | 83.13 | 62.50 | 54.84 | 78.80 | |||||||||||||
2016 | 57.68 | 67.69 | 69.16 | 77.63 | 84.45 | 96.53 | 100.03 | 98.32 | 91.33 | 78.68 | 68.80 | 55.84 | 78.85 | |||||||||||||
2017 | 55.61 | 61.68 | 70.32 | 73.80 | 84.03 | 95.10 | 101.90 | 99.55 | 90.10 | 79.94 | 68.33 | 60.48 | 78.40 | |||||||||||||
2018 | 61.39 | 65.57 | 67.35 | 77.57 | 84.13 | 94.60 | 102.81 | 98.52 | 92.93 | 80.68 | 69.20 | 56.84 | 79.30 | |||||||||||||
2019 | 61.03 | 57.32 | 67.39 | 79.30 | 77.16 | 94.27 | 98.97 | 99.45 | 90.53 | 79.26 | 70.37 | 58.32 | 77.78 | |||||||||||||
2020 | 57.19 | 68.21 | 66.35 | 75.13 | 86.97 | 93.63 | 99.87 | 100.39 | 93.00 | 85.16 | 66.60 | 58.35 | 79.24 | |||||||||||||
2021 | 59.58 | 64.93 | 67.61 | 79.77 | 87.65 | 97.00 | 103.29 | 100.16 | 94.07 | 76.58 | 66.47 | 54.97 | 79.34 | |||||||||||||
2022 | 61.03 | 67.46 | 72.87 | 77.03 | 85.16 | 96.13 | 100.77 | 101.68 | 95.30 | 84.65 | 63.33 | 53.58 | 79.92 | |||||||||||||
2023 | 57.68 | 59.50 | 61.55 | 76.40 | 83.39 | 87.80 | 101.77 | 97.48 | 88.67 | 81.84 | 70.37 | 63.03 | 77.46 | |||||||||||||
2024 | 58.65 | 62.93 | 67.81 | 74.87 | g | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 63.13 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 55.46 | 61.93 | 67.42 | 74.88 | 83.59 | 92.13 | 98.62 | 96.80 | 90.98 | 79.94 | 65.68 | 55.21 | 76.88 | |||||||||||||
S.D. | 3.74 | 2.94 | 3.85 | 4.24 | 3.92 | 3.45 | 2.49 | 2.62 | 2.85 | 3.22 | 3.45 | 3.43 | 1.54 | |||||||||||||
SKEW | 0.33 | 0.29 | 0.19 | -0.32 | -0.37 | -0.48 | -0.26 | -0.77 | -0.43 | -0.02 | -0.34 | -0.17 | 0.19 | |||||||||||||
MAX | 66.84 | 68.86 | 77.71 | 82.30 | 92.90 | 99.13 | 103.35 | 102.19 | 96.77 | 86.26 | 72.07 | 63.42 | 81.65 | |||||||||||||
MIN | 46.87 | 55.25 | 59.16 | 61.67 | 72.48 | 83.50 | 92.35 | 86.90 | 84.50 | 74.19 | 56.87 | 44.97 | 73.23 | |||||||||||||
YRS | 77 | 77 | 77 | 76 | 76 | 76 | 76 | 76 | 76 | 76 | 76 | 76 | 76 |