YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1950 | ----- | z | ----- | z | ----- | z | ----- | z | 89.50 | y | 95.62 | a | 88.65 | 91.10 | 84.47 | 82.74 | 67.87 | 62.00 | 81.78 | e | ||||||
1951 | 55.29 | 58.14 | 64.68 | 72.83 | 85.06 | 93.93 | 97.52 | 91.58 | 89.93 | 77.71 | 61.07 | 53.26 | 75.08 | |||||||||||||
1952 | 57.84 | 57.45 | 59.81 | 72.60 | 83.06 | 93.90 | 92.48 | 94.00 | 86.73 | 79.10 | 58.17 | 52.03 | 73.93 | |||||||||||||
1953 | 60.97 | 57.43 | 65.97 | 74.10 | 79.55 | 95.20 | 93.39 | 92.32 | 89.80 | 75.65 | 65.50 | 48.74 | 74.88 | |||||||||||||
1954 | 56.52 | 66.21 | 64.32 | 80.60 | 83.42 | 92.60 | 94.74 | 88.61 | 87.27 | 77.13 | 66.97 | 55.48 | 76.16 | |||||||||||||
1955 | 50.06 | 55.46 | 66.06 | 76.13 | 80.77 | 91.27 | 89.71 | 89.23 | 89.13 | 77.84 | 64.40 | 58.87 | 74.08 | |||||||||||||
1956 | 59.26 | 54.62 | 69.52 | 73.33 | 88.00 | 95.60 | 91.81 | 90.06 | 90.30 | 77.65 | 60.07 | 54.42 | 75.39 | |||||||||||||
1957 | 56.71 | 66.43 | 65.06 | 72.90 | 78.03 | 92.83 | 93.90 | 86.61 | 85.20 | 68.47 | a | 56.70 | 56.03 | 73.24 | ||||||||||||
1958 | 51.42 | 60.64 | 57.06 | 71.47 | 83.45 | 93.50 | 93.55 | 92.03 | 81.07 | 70.13 | 62.52 | a | 59.87 | 73.06 | ||||||||||||
1959 | 57.35 | 57.79 | 65.74 | 76.10 | 83.71 | 92.90 | 93.13 | 87.81 | 87.90 | 75.32 | 59.53 | 52.45 | 74.14 | |||||||||||||
1960 | 48.84 | 53.93 | 69.94 | 75.57 | 82.23 | 92.97 | 89.13 | 92.23 | 86.17 | 71.77 | 63.83 | 43.10 | 72.47 | |||||||||||||
1961 | 48.55 | 59.93 | 65.16 | 75.57 | 84.52 | 92.63 | 92.65 | 89.00 | 81.07 | 75.68 | 55.37 | 53.61 | 72.81 | |||||||||||||
1962 | 50.06 | 63.86 | 61.32 | 78.00 | 84.92 | g | 90.93 | 88.35 | 93.16 | 82.47 | 75.29 | 65.63 | 54.13 | 73.02 | a | |||||||||||
1963 | 51.94 | 61.21 | 66.84 | 76.33 | 87.03 | 92.57 | 95.10 | 87.90 | 85.23 | 78.71 | 64.33 | 55.42 | 75.22 | |||||||||||||
1964 | 50.87 | 51.59 | 63.03 | 72.87 | 84.55 | 92.00 | 93.00 | 91.84 | 82.83 | 77.74 | 63.13 | 54.13 | 73.13 | |||||||||||||
1965 | 57.06 | 57.75 | 62.71 | 75.03 | 81.52 | 88.40 | 93.35 | 90.13 | 81.80 | 76.97 | 66.80 | 53.61 | 73.76 | |||||||||||||
1966 | 47.87 | 52.32 | 68.00 | 75.23 | 85.39 | 90.53 | 94.84 | 88.97 | 83.57 | 74.35 | 66.13 | 54.29 | 73.46 | |||||||||||||
1967 | 56.61 | 60.93 | 72.45 | 76.20 | 82.00 | 88.90 | 93.00 | 86.58 | 81.10 | 76.03 | 64.33 | 46.90 | 73.75 | |||||||||||||
1968 | 52.52 | 59.79 | 62.58 | 70.37 | 82.97 | 92.90 | 89.90 | 86.39 | 84.48 | a | 78.35 | 61.13 | 52.39 | 72.81 | ||||||||||||
1969 | 59.45 | 58.68 | 61.65 | 77.57 | 83.32 | 91.83 | 92.42 | 93.26 | 84.00 | 73.42 | 61.07 | 55.58 | 74.35 | |||||||||||||
1970 | 54.58 | 59.89 | 61.13 | 72.43 | 84.13 | 89.63 | 92.58 | 90.13 | 82.90 | 68.74 | 64.63 | 57.23 | 73.17 | |||||||||||||
1971 | 56.94 | 59.64 | 69.06 | 71.90 | 80.84 | 92.07 | 93.58 | 86.84 | 83.30 | 69.68 | 60.70 | 50.48 | 72.92 | |||||||||||||
1972 | 56.87 | 62.52 | 73.97 | 77.53 | 81.32 | 88.40 | 91.61 | 85.61 | 81.37 | 71.90 | 56.07 | 53.23 | 73.37 | |||||||||||||
1973 | 47.90 | 52.36 | 59.87 | 68.00 | 79.10 | 89.83 | 89.10 | 89.94 | 86.23 | 77.61 | 67.90 | 56.10 | 71.99 | |||||||||||||
1974 | 54.61 | 57.54 | 71.48 | 74.73 | 86.32 | 95.10 | 88.06 | 85.97 | 80.13 | 69.71 | 60.97 | 48.35 | 72.75 | |||||||||||||
1975 | 50.23 | 57.25 | 62.94 | 69.47 | 79.42 | 92.00 | 89.71 | 90.26 | 78.87 | 74.77 | 63.33 | 54.29 | 71.88 | |||||||||||||
1976 | 53.52 | 63.62 | 65.32 | 74.03 | 80.68 | 91.60 | 89.71 | 90.10 | 81.23 | 68.26 | 57.67 | 52.26 | 72.33 | |||||||||||||
1977 | 50.65 | 59.36 | 62.42 | 72.30 | 81.74 | 93.37 | 92.97 | 93.10 | 86.87 | 75.97 | 66.33 | 59.52 | 74.55 | |||||||||||||
1978 | 53.65 | 55.86 | 67.71 | 76.67 | 81.65 | 94.03 | 95.42 | 89.90 | 82.10 | 76.19 | 62.33 | 52.29 | 73.98 | |||||||||||||
1979 | 50.58 | 59.89 | 68.16 | 77.07 | 80.45 | 90.37 | 95.45 | 89.39 | 85.43 | 80.61 | 59.67 | 57.29 | 74.53 | |||||||||||||
1980 | 57.84 | 62.48 | 63.58 | 72.10 | 79.81 | 97.93 | 97.39 | 90.74 | 84.03 | 73.14 | c | 62.43 | 60.84 | 75.19 | ||||||||||||
1981 | 54.32 | 62.61 | 63.26 | 76.53 | 82.06 | 94.60 | 92.97 | 89.42 | 84.57 | 74.48 | 69.43 | 61.00 | 75.44 | |||||||||||||
1982 | 59.13 | 59.80 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 59.46 | j | |
1983 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1984 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1985 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1986 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1987 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1988 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1989 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 54.10 | k | ----- | z |
1990 | 55.22 | h | 58.05 | i | 65.68 | i | 73.52 | i | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1991 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1992 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1993 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1994 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1995 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1996 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 73.32 | 63.40 | 56.10 | 64.27 | i | |||
1997 | 58.41 | b | 56.57 | 70.13 | 71.20 | 84.55 | 90.97 | 92.15 | d | 90.48 | 86.27 | 74.06 | 61.60 | 48.19 | 73.72 | |||||||||||
1998 | 56.94 | 56.96 | 64.74 | 70.50 | 86.03 | 94.30 | 92.23 | 90.19 | 89.63 | 74.13 | 64.93 | 55.52 | 74.68 | |||||||||||||
1999 | 59.23 | 65.07 | 69.35 | 73.33 | 84.10 | 90.10 | 89.19 | 87.71 | 83.83 | 76.63 | a | 69.41 | a | 51.97 | 74.99 | |||||||||||
2000 | 60.30 | a | 65.39 | a | 66.23 | 78.67 | 90.86 | c | 90.47 | 93.58 | 91.19 | 90.13 | 70.83 | a | 54.43 | 54.58 | 75.56 | |||||||||
2001 | 48.48 | 59.04 | 65.30 | a | 76.10 | 85.52 | 93.57 | 93.10 | 89.16 | 85.47 | 77.77 | 62.63 | 53.10 | 74.10 | ||||||||||||
2002 | 55.16 | 58.07 | 67.90 | 81.47 | 86.61 | 96.67 | 91.48 | 93.17 | a | 83.87 | 72.00 | 61.03 | 50.55 | 74.83 | ||||||||||||
2003 | 60.74 | 58.21 | 65.55 | 75.53 | 86.97 | 91.73 | 98.00 | a | 92.28 | b | 87.17 | 79.00 | 62.97 | 54.81 | 76.08 | |||||||||||
2004 | 54.58 | 54.41 | 69.87 | 71.07 | 85.97 | 92.43 | 93.19 | 87.55 | 83.30 | 72.63 | a | 56.77 | 52.29 | 72.84 | ||||||||||||
2005 | 57.42 | e | 55.18 | 63.23 | 73.83 | 84.61 | 94.37 | 96.29 | 88.87 | a | 87.53 | 73.42 | 66.43 | 58.06 | 74.94 | |||||||||||
2006 | 58.61 | 62.86 | 66.42 | 79.30 | 88.35 | 94.10 | 92.29 | 85.26 | 78.27 | 71.29 | 65.77 | 52.48 | 74.58 | |||||||||||||
2007 | 48.03 | 60.64 | 68.71 | 75.17 | 80.26 | 93.27 | 92.97 | 92.13 | 85.03 | 78.03 | 65.97 | a | 51.75 | c | 74.33 | |||||||||||
2008 | 51.23 | 63.17 | 68.77 | 75.73 | 82.71 | 95.07 | 87.62 | b | 87.87 | 80.90 | 75.61 | 64.10 | 56.23 | 74.08 | ||||||||||||
2009 | 58.90 | 64.14 | 68.81 | 74.40 | 85.48 | 88.53 | 94.57 | a | 92.16 | 82.70 | 73.16 | 64.00 | 49.73 | a | 74.72 | |||||||||||
2010 | 51.14 | c | 55.39 | 63.68 | 73.73 | 83.97 | 95.40 | 91.32 | 91.29 | 88.77 | 77.61 | 62.87 | 60.16 | 74.61 | ||||||||||||
2011 | 54.81 | 56.93 | a | 74.55 | 79.80 | 83.68 | 97.27 | 95.81 | 95.16 | 86.23 | 76.42 | 61.67 | 45.13 | 75.62 | ||||||||||||
2012 | 58.32 | 59.46 | a | 70.16 | 79.63 | 86.19 | 97.70 | 92.84 | 93.19 | 85.20 | 80.16 | 67.43 | 55.19 | 77.12 | ||||||||||||
2013 | 50.77 | 57.18 | 70.58 | 77.27 | 84.45 | 97.23 | 90.48 | 89.97 | 82.23 | 74.03 | 59.93 | 53.00 | 73.93 | |||||||||||||
2014 | 58.19 | 66.32 | 68.90 | 75.20 | 83.26 | 97.70 | 93.81 | 87.35 | 83.20 | 77.35 | 62.90 | 56.35 | 75.88 | |||||||||||||
2015 | 51.68 | 65.26 | a | 68.81 | 74.50 | 80.84 | 93.70 | 92.10 | 93.90 | 87.37 | 75.29 | 62.63 | 54.00 | 75.01 | ||||||||||||
2016 | 53.68 | 65.55 | 72.06 | 74.30 | 81.45 | 95.23 | 97.61 | 88.13 | a | 84.73 | 81.19 | 62.76 | a | 56.16 | 76.07 | |||||||||||
2017 | 54.94 | 64.79 | 74.45 | 78.23 | 83.68 | 96.87 | 94.45 | 90.55 | 88.10 | 79.45 | 72.44 | c | 58.04 | d | 78.00 | |||||||||||
2018 | 59.17 | b | 64.14 | 70.42 | 80.70 | 90.23 | 98.31 | a | 93.93 | a | 93.84 | 87.60 | 71.29 | 62.67 | 53.61 | 77.16 | ||||||||||
2019 | 55.03 | 59.82 | 69.52 | 78.03 | 81.35 | 93.87 | 96.90 | 96.48 | 88.63 | 75.06 | 61.37 | 54.19 | 75.86 | |||||||||||||
2020 | 57.29 | 60.10 | 68.94 | 79.70 | 89.68 | 95.23 | 98.14 | b | 97.97 | 86.73 | 82.45 | 69.50 | 55.29 | 78.42 | ||||||||||||
2021 | 56.52 | 62.82 | 67.52 | 77.43 | 86.74 | 95.90 | a | 91.15 | d | 90.06 | 87.23 | 76.96 | d | 68.60 | 61.26 | 76.85 | ||||||||||
2022 | 56.61 | 58.21 | 67.74 | 81.50 | 89.90 | 93.46 | b | 95.39 | 89.26 | 86.37 | 70.23 | 60.07 | 55.77 | 75.38 | ||||||||||||
2023 | 54.77 | 57.63 | a | 65.87 | 76.80 | 84.65 | 93.50 | 101.03 | 94.13 | 89.10 | 78.68 | 64.73 | 56.42 | 76.44 | ||||||||||||
2024 | 55.10 | 61.66 | 65.81 | 74.73 | h | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 60.85 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 54.77 | 59.70 | 66.69 | 75.32 | 83.83 | 93.34 | 93.06 | 90.40 | 85.04 | 75.32 | 63.15 | 54.32 | 74.55 | |||||||||||||
S.D. | 3.68 | 3.75 | 3.75 | 3.08 | 2.95 | 2.51 | 2.78 | 2.70 | 2.98 | 3.47 | 3.71 | 3.80 | 1.45 | |||||||||||||
SKEW | -0.31 | -0.02 | -0.10 | -0.01 | 0.39 | -0.03 | 0.28 | 0.34 | -0.13 | -0.14 | -0.09 | -0.41 | 0.43 | |||||||||||||
MAX | 60.97 | 66.43 | 74.55 | 81.50 | 90.86 | 98.31 | 101.03 | 97.97 | 90.30 | 82.74 | 72.44 | 62.00 | 78.42 | |||||||||||||
MIN | 47.87 | 51.59 | 57.06 | 68.00 | 78.03 | 88.40 | 87.62 | 85.26 | 78.27 | 68.26 | 54.43 | 43.10 | 71.88 | |||||||||||||
YRS | 60 | 60 | 59 | 58 | 57 | 59 | 59 | 59 | 59 | 60 | 60 | 60 | 57 |