YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1947 | 50.39 | 52.07 | 58.77 | 71.40 | 80.19 | 93.00 | 94.74 | 91.90 | 89.60 | 80.87 | 56.70 | 55.84 | 72.96 | |||||||||||||
1948 | 49.50 | a | 54.14 | 60.61 | 82.37 | 83.61 | 93.60 | 92.81 | 93.77 | 86.03 | 73.48 | 61.37 | 58.06 | 74.11 | ||||||||||||
1949 | 40.55 | 55.21 | 65.32 | 69.57 | 80.94 | 88.77 | 92.13 | 87.94 | 80.60 | 71.84 | 71.73 | 54.16 | 71.56 | |||||||||||||
1950 | 57.90 | 63.93 | 66.90 | 74.33 | 81.97 | 90.30 | 87.29 | 89.19 | 78.87 | 80.77 | 66.37 | 57.87 | 74.64 | |||||||||||||
1951 | 52.94 | 59.93 | 64.07 | a | 72.33 | 82.84 | 90.07 | 94.97 | 92.42 | 86.20 | 75.87 | 59.73 | 57.65 | 74.08 | ||||||||||||
1952 | 58.35 | 60.07 | 63.35 | 71.43 | 82.55 | 94.50 | 90.06 | 95.03 | 83.03 | 76.16 | 57.63 | 55.29 | 73.96 | |||||||||||||
1953 | 63.52 | 58.71 | 70.35 | 73.87 | 82.26 | 97.90 | 93.39 | 91.26 | 89.20 | 74.16 | 62.70 | 51.42 | 75.73 | |||||||||||||
1954 | 57.97 | 66.86 | 63.87 | 78.93 | 75.74 | 91.07 | 95.87 | 91.90 | 89.30 | 75.48 | 66.90 | 57.97 | 75.99 | |||||||||||||
1955 | 51.39 | 56.14 | 67.13 | 78.33 | 81.94 | 90.20 | 90.19 | 90.74 | 85.03 | 75.10 | 62.23 | 59.68 | 74.01 | |||||||||||||
1956 | 56.06 | 51.76 | 69.19 | 74.10 | 88.03 | 94.03 | 93.52 | 92.87 | 90.03 | 78.13 | 61.80 | 59.16 | 75.72 | |||||||||||||
1957 | 54.80 | a | 61.57 | 62.71 | 68.77 | 76.06 | 87.47 | 94.65 | 91.45 | 82.70 | 69.13 | 52.87 | 59.74 | 71.83 | ||||||||||||
1958 | 48.42 | 51.93 | 51.26 | 67.43 | 82.65 | 93.00 | 94.26 | 92.61 | 83.37 | 70.00 | 64.33 | 55.42 | 71.22 | |||||||||||||
1959 | 54.58 | 56.04 | 66.52 | 73.10 | 83.10 | 89.40 | 88.87 | 92.03 | 86.70 | 72.39 | 60.13 | 54.84 | 73.14 | |||||||||||||
1960 | 50.26 | 49.34 | 60.81 | 77.73 | 85.32 | 93.23 | 89.42 | 91.06 | 86.17 | 75.45 | 65.57 | 46.68 | 72.59 | |||||||||||||
1961 | 50.74 | 54.86 | 64.77 | 76.60 | 84.26 | 87.63 | 87.81 | 88.84 | 83.43 | 76.74 | 55.40 | 52.26 | 71.95 | |||||||||||||
1962 | 49.19 | 65.61 | 62.58 | 74.47 | 90.48 | 88.13 | 91.00 | 92.68 | 81.23 | 75.71 | 63.00 | 55.35 | 74.12 | |||||||||||||
1963 | 51.07 | a | 58.11 | 69.06 | 78.63 | 83.87 | 88.47 | 94.58 | 91.23 | 85.73 | 81.65 | 65.53 | 49.00 | 74.74 | ||||||||||||
1964 | 54.35 | 50.41 | 65.42 | 78.03 | 85.39 | 91.10 | 94.90 | 92.77 | 81.30 | 76.52 | 62.77 | 55.71 | 74.06 | |||||||||||||
1965 | 59.42 | 55.00 | 56.84 | 78.57 | 84.10 | 90.27 | 94.87 | 90.61 | 86.03 | 77.90 | 71.87 | 59.45 | 75.41 | |||||||||||||
1966 | 47.29 | 55.04 | 71.97 | 73.43 | 83.45 | 90.23 | 97.77 | 86.61 | 81.87 | 76.84 | 71.33 | 54.61 | 74.20 | |||||||||||||
1967 | 59.13 | 58.00 | 71.97 | 77.00 | 82.06 | 86.73 | 88.29 | 87.06 | 80.17 | 75.61 | 62.87 | 49.06 | 73.16 | |||||||||||||
1968 | 52.10 | 51.24 | 60.87 | 69.97 | 79.94 | 89.00 | 87.29 | 86.00 | 81.37 | 77.06 | 58.17 | 54.65 | 70.64 | |||||||||||||
1969 | 59.71 | 56.11 | 53.81 | 76.10 | 81.55 | 91.10 | 96.81 | 92.68 | 80.17 | 67.13 | 63.67 | 58.16 | 73.08 | |||||||||||||
1970 | 53.68 | 62.00 | 59.58 | 73.83 | 84.32 | 89.27 | 94.00 | 92.84 | 82.73 | 69.87 | 64.53 | 61.10 | 73.98 | |||||||||||||
1971 | 57.90 | 58.50 | 68.23 | 74.17 | 83.74 | 90.73 | 92.65 | 83.32 | 81.60 | 73.90 | 64.00 | 56.03 | 73.73 | |||||||||||||
1972 | 58.23 | 64.07 | 72.61 | 81.27 | 79.48 | 89.13 | 86.71 | 84.45 | 81.27 | 71.48 | 53.27 | 51.39 | 72.78 | |||||||||||||
1973 | 45.61 | 51.96 | 63.58 | 68.43 | 81.55 | 90.93 | 86.90 | 90.06 | 81.47 | 77.55 | 67.77 | 57.71 | 71.96 | |||||||||||||
1974 | 56.55 | 63.07 | 73.42 | 75.93 | 87.58 | 90.93 | 92.16 | 83.42 | 73.70 | 70.16 | 59.83 | 52.39 | 73.26 | |||||||||||||
1975 | 54.32 | 54.21 | 65.26 | 73.83 | 81.74 | 91.13 | 85.16 | 89.45 | 80.37 | 78.87 | 65.30 | 57.81 | 73.12 | |||||||||||||
1976 | 55.65 | 68.41 | 67.61 | 74.87 | 80.16 | 89.97 | 84.13 | 90.42 | 80.13 | 67.45 | 56.10 | 56.06 | 72.58 | |||||||||||||
1977 | 48.35 | 61.29 | 67.03 | 72.27 | 83.65 | 92.53 | 92.10 | 90.58 | 91.13 | 75.87 | 67.60 | 60.26 | 75.22 | |||||||||||||
1978 | 43.45 | 43.96 | 67.16 | 81.17 | 82.87 | 91.30 | 95.06 | 89.68 | 81.70 | 74.10 | 58.87 | 51.35 | 71.72 | |||||||||||||
1979 | 42.13 | 56.86 | 65.48 | 75.53 | 81.48 | 89.03 | 93.13 | 88.29 | 87.20 | 80.81 | 58.53 | 54.52 | 72.75 | |||||||||||||
1980 | 51.90 | 58.79 | 67.13 | 74.57 | 80.87 | 96.40 | 97.68 | 91.52 | 83.03 | 73.19 | 57.97 | 59.81 | 74.40 | |||||||||||||
1981 | 54.58 | 60.14 | 63.10 | 76.37 | 80.81 | 93.07 | 92.58 | 86.23 | 81.13 | 69.68 | 67.07 | 57.19 | 73.49 | |||||||||||||
1982 | 53.90 | 56.29 | 68.48 | 72.17 | 80.71 | 85.40 | 91.74 | 93.06 | 86.87 | 75.19 | 60.73 | 49.16 | 72.81 | |||||||||||||
1983 | 43.94 | 55.14 | 65.61 | 69.53 | 81.06 | 88.93 | 93.97 | 93.55 | 88.67 | 74.81 | 63.83 | 43.06 | 71.84 | |||||||||||||
1984 | 51.06 | 61.97 | 64.71 | 74.03 | 86.68 | 88.27 | 90.74 | 89.29 | 82.03 | 70.94 | 61.87 | 55.03 | 73.05 | |||||||||||||
1985 | 48.84 | 55.29 | 66.03 | 78.03 | 84.45 | 87.43 | 92.74 | 94.39 | 82.90 | 72.19 | 63.73 | 51.35 | 73.12 | |||||||||||||
1986 | 60.55 | 58.43 | 71.61 | 78.70 | 83.61 | 87.30 | 94.71 | 88.61 | 81.40 | 70.39 | 59.37 | 50.48 | 73.76 | |||||||||||||
1987 | 50.77 | 56.21 | 62.45 | 74.63 | 81.10 | 88.53 | 91.84 | 91.58 | 82.77 | 77.32 | 63.50 | 52.19 | 72.74 | |||||||||||||
1988 | 47.52 | 57.59 | 67.42 | 75.30 | 82.55 | 91.50 | 90.81 | 92.06 | 84.70 | 77.55 | 67.73 | 55.84 | 74.21 | |||||||||||||
1989 | 59.77 | 49.96 | 72.00 | 80.37 | 87.94 | 87.40 | 95.19 | 91.03 | 82.67 | 79.58 | 67.07 | 50.35 | 75.28 | |||||||||||||
1990 | 58.71 | 61.43 | 64.23 | 75.30 | 83.87 | 99.33 | 89.06 | 90.71 | 86.03 | 76.29 | 66.07 | 53.39 | 75.37 | |||||||||||||
1991 | 48.84 | 63.68 | 69.00 | 79.97 | 88.45 | 90.57 | 91.68 | 90.23 | 78.60 | 77.03 | 56.37 | 53.13 | 73.96 | |||||||||||||
1992 | 50.39 | 62.03 | 69.74 | 76.37 | 79.23 | 88.60 | 93.61 | 88.65 | 86.97 | 80.42 | 59.20 | 53.68 | 74.07 | |||||||||||||
1993 | 50.94 | 55.25 | 66.61 | 76.23 | 83.32 | 91.37 | 94.42 | 92.45 | 86.17 | 74.06 | 59.27 | 58.03 | 74.01 | |||||||||||||
1994 | 54.84 | 60.36 | 68.55 | 76.87 | 81.71 | 97.43 | 95.77 | 93.32 | 87.57 | 76.45 | 64.90 | 59.19 | 76.41 | |||||||||||||
1995 | 55.35 | 62.54 | 66.00 | 75.90 | 81.52 | 91.00 | 96.74 | 92.42 | 80.20 | 76.77 | 67.07 | 56.03 | 75.13 | |||||||||||||
1996 | 55.52 | 63.07 | 64.55 | 77.37 | 91.45 | 91.43 | 91.06 | 87.10 | 81.13 | 75.26 | 63.90 | 60.65 | 75.21 | |||||||||||||
1997 | 50.94 | 52.36 | 70.16 | 65.73 | 79.06 | 86.50 | 92.87 | 92.30 | a | 87.07 | 74.23 | 59.03 | 49.26 | 71.63 | ||||||||||||
1998 | 58.32 | 54.61 | 62.10 | 73.07 | 90.45 | 96.77 | 97.19 | 88.03 | 89.97 | 76.10 | 64.73 | 54.81 | 75.51 | |||||||||||||
1999 | 58.35 | 67.57 | 62.42 | 73.73 | 79.03 | 87.17 | 92.10 | 95.29 | 81.93 | 75.58 | 70.77 | 54.84 | 74.90 | |||||||||||||
2000 | 58.00 | 68.21 | a | 68.48 | 76.97 | 89.16 | 84.10 | 92.97 | 95.32 | 91.07 | 72.90 | 54.27 | 46.87 | 74.86 | ||||||||||||
2001 | 47.13 | 57.68 | 59.52 | 79.17 | 83.68 | 95.10 | 98.87 | 92.26 | 85.30 | 77.32 | 63.47 | 55.32 | 74.57 | |||||||||||||
2002 | 56.68 | 57.39 | 65.13 | 76.40 | 85.35 | 91.57 | 91.48 | 93.77 | 85.80 | 68.35 | 59.80 | 54.13 | 73.82 | |||||||||||||
2003 | 57.71 | 57.54 | 69.55 | 78.33 | 85.48 | 86.63 | 95.58 | 94.19 | 84.07 | 79.16 | 64.43 | 59.39 | 76.01 | |||||||||||||
2004 | 56.26 | 53.86 | 68.39 | 72.37 | 87.29 | 89.13 | 91.10 | 86.65 | 82.10 | 74.19 | 56.67 | 56.48 | 72.87 | |||||||||||||
2005 | 55.06 | 56.79 | 64.16 | 74.83 | 80.77 | 92.63 | 91.71 | 88.74 | 89.70 | 74.32 | 69.37 | 56.71 | 74.57 | |||||||||||||
2006 | 64.23 | 61.61 | 67.39 | 81.63 | 89.06 | 94.80 | 95.97 | 92.06 | 80.00 | 72.87 | 67.17 | 54.19 | 76.75 | |||||||||||||
2007 | 46.06 | 58.82 | 68.39 | 68.40 | 77.35 | 86.67 | 89.32 | 91.10 | 86.60 | 80.68 | 65.33 | 55.42 | 72.85 | |||||||||||||
2008 | 55.52 | 64.17 | 69.13 | 76.27 | 84.55 | 94.90 | 90.58 | 89.29 | 80.77 | 75.06 | 66.40 | 57.48 | 75.34 | |||||||||||||
2009 | 59.71 | 65.75 | 72.03 | 76.73 | 82.74 | 92.90 | 93.71 | 94.65 | 83.27 | 72.00 | 69.20 | 48.35 | 75.92 | |||||||||||||
2010 | 53.19 | 49.82 | 65.94 | 73.63 | 82.48 | 93.90 | 86.55 | 93.19 | 87.93 | 79.39 | 66.93 | 60.65 | 74.47 | |||||||||||||
2011 | 57.03 | 58.46 | 72.94 | 82.50 | 86.97 | 100.80 | 99.16 | 99.19 | 86.17 | 76.90 | 64.27 | 47.00 | 77.62 | |||||||||||||
2012 | 60.87 | 57.38 | 74.19 | 82.70 | 86.87 | 93.87 | 94.81 | 93.97 | 85.03 | 74.81 | 71.20 | 58.03 | 77.81 | |||||||||||||
2013 | 54.00 | 57.43 | 70.26 | 76.50 | 85.65 | 93.43 | 90.45 | 93.19 | 88.67 | 76.55 | 61.50 | 53.35 | 75.08 | |||||||||||||
2014 | 57.48 | 57.43 | 68.32 | 77.00 | 85.10 | 90.67 | 90.06 | 94.65 | 80.37 | 78.23 | 60.80 | 54.77 | 74.57 | |||||||||||||
2015 | 50.68 | 59.36 | 68.03 | 76.30 | 77.84 | 88.47 | 92.32 | 93.58 | 89.43 | 76.16 | 64.10 | 57.26 | 74.46 | |||||||||||||
2016 | 55.26 | 65.38 | 72.61 | 76.80 | 81.16 | 91.47 | 99.48 | 90.61 | 84.20 | 81.90 | 67.53 | 55.58 | 76.83 | |||||||||||||
2017 | 56.94 | 68.00 | 74.74 | 76.63 | 85.52 | 94.40 | 92.94 | 87.39 | 84.67 | 75.77 | 69.90 | 56.94 | 76.99 | |||||||||||||
2018 | 56.94 | 61.43 | 72.16 | 76.60 | 92.84 | 96.70 | 94.87 | 93.39 | 83.57 | 68.90 | 60.43 | 52.39 | 75.85 | |||||||||||||
2019 | 56.35 | 60.11 | 61.90 | 76.47 | 79.90 | 89.93 | 94.84 | 97.71 | 88.93 | 71.03 | 62.17 | 59.03 | 74.87 | |||||||||||||
2020 | 58.55 | 56.48 | 68.35 | 76.20 | 87.68 | 93.20 | 98.39 | 96.97 | 84.20 | 76.48 | 69.37 | 57.48 | 76.95 | |||||||||||||
2021 | 52.32 | 50.36 | 68.52 | 72.70 | 80.19 | 91.33 | 90.06 | 90.45 | 89.50 | 81.10 | 68.03 | 67.19 | 75.15 | |||||||||||||
2022 | 55.65 | 56.36 | 68.74 | 81.17 | 90.94 | 93.93 | 100.16 | 91.42 | 88.10 | 73.00 | 58.57 | 56.29 | 76.19 | |||||||||||||
2023 | 57.19 | 60.54 | 68.68 | 76.37 | 82.68 | 92.90 | 97.77 | 99.23 | 91.93 | 75.48 | 65.47 | 59.13 | 77.28 | |||||||||||||
2024 | 51.06 | 64.34 | 69.29 | 78.17 | 81.69 | r | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 65.72 | h | ||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 53.85 | 58.25 | 66.50 | 75.55 | 83.48 | 91.19 | 92.82 | 91.30 | 84.45 | 75.19 | 63.26 | 55.16 | 74.24 | |||||||||||||
S.D. | 4.87 | 5.01 | 4.46 | 3.57 | 3.53 | 3.26 | 3.44 | 3.16 | 3.60 | 3.47 | 4.54 | 4.02 | 1.59 | |||||||||||||
SKEW | -0.48 | -0.07 | -0.78 | -0.35 | 0.44 | 0.52 | -0.18 | -0.14 | -0.02 | -0.25 | -0.18 | -0.39 | 0.08 | |||||||||||||
MAX | 64.23 | 68.41 | 74.74 | 82.70 | 92.84 | 100.80 | 100.16 | 99.23 | 91.93 | 81.90 | 71.87 | 67.19 | 77.81 | |||||||||||||
MIN | 40.55 | 43.96 | 51.26 | 65.73 | 75.74 | 84.10 | 84.13 | 83.32 | 73.70 | 67.13 | 52.87 | 43.06 | 70.64 | |||||||||||||
YRS | 78 | 78 | 78 | 78 | 77 | 77 | 77 | 77 | 77 | 77 | 77 | 77 | 77 |