YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 91.70 | t | 89.00 | 86.03 | 79.87 | 70.23 | 67.50 | 51.13 | 73.96 | f | ||||||
1950 | 58.58 | 63.04 | 66.03 | 72.90 | 79.42 | 90.97 | 84.26 | 87.55 | 78.10 | 78.97 | 63.00 | 57.19 | 73.33 | |||||||||||||
1951 | 49.26 | 55.93 | 61.48 | 71.17 | 79.65 | 88.90 | 92.16 | 90.32 | 85.53 | 74.65 | 58.00 | 52.06 | 71.59 | |||||||||||||
1952 | 52.97 | 57.24 | 59.29 | 69.00 | 82.16 | 93.00 | 90.35 | 93.61 | 82.33 | 75.19 | 54.73 | 49.06 | 71.58 | |||||||||||||
1953 | 59.87 | 55.68 | 67.52 | 73.10 | 79.74 | 96.67 | 91.52 | 89.37 | a | 87.83 | 72.29 | 62.57 | 49.26 | 73.78 | ||||||||||||
1954 | 55.77 | 65.86 | 63.45 | 78.43 | 77.35 | 91.03 | 95.00 | 89.03 | 86.27 | 73.94 | 64.87 | 56.35 | 74.78 | |||||||||||||
1955 | 50.65 | 56.61 | 66.52 | 74.00 | 79.35 | 88.17 | 87.90 | 88.35 | 84.57 | 74.55 | 61.43 | 57.77 | 72.49 | |||||||||||||
1956 | 55.32 | 49.66 | 68.84 | 72.87 | 86.42 | 92.30 | 91.55 | 90.52 | 89.53 | 76.45 | 60.03 | 56.16 | 74.14 | |||||||||||||
1957 | 54.74 | 63.46 | 62.55 | 68.33 | 74.48 | 88.34 | a | 93.68 | 87.06 | 82.33 | 67.16 | 51.93 | 58.32 | 71.03 | ||||||||||||
1958 | 47.00 | 56.54 | 52.42 | 66.20 | 80.55 | 92.63 | 94.29 | 91.06 | 81.43 | 68.58 | 63.30 | 57.10 | 70.93 | |||||||||||||
1959 | 53.58 | 55.64 | 64.87 | 72.30 | 81.32 | 87.57 | 88.61 | 88.52 | 87.07 | a | 72.29 | 62.03 | 51.68 | 72.12 | ||||||||||||
1960 | 45.87 | 48.52 | 62.94 | 76.27 | 82.81 | 90.87 | 87.61 | 89.84 | 84.07 | 72.94 | 64.03 | 44.03 | 70.82 | |||||||||||||
1961 | 50.03 | 57.57 | 62.35 | 74.23 | 83.94 | 89.97 | 87.87 | 87.48 | 81.41 | a | 76.42 | 51.63 | 50.10 | 71.08 | ||||||||||||
1962 | 49.71 | 64.68 | 62.06 | 74.83 | 87.52 | 89.87 | 89.23 | 93.90 | 83.64 | b | 76.06 | 63.30 | 56.10 | a | 74.24 | |||||||||||
1963 | 51.68 | 58.86 | 67.68 | 77.45 | a | 82.74 | 86.23 | 93.20 | a | 89.26 | 84.70 | 79.71 | 65.33 | 51.97 | 74.07 | |||||||||||
1964 | 54.13 | 47.50 | a | 64.50 | a | 75.76 | a | 84.00 | 89.83 | 95.26 | 91.71 | 81.23 | 78.55 | 61.10 | 54.65 | 73.18 | ||||||||||
1965 | 58.71 | 56.22 | a | 57.19 | 75.60 | 80.81 | 86.97 | 92.42 | 88.23 | 83.63 | 76.03 | 69.03 | 57.35 | 73.52 | ||||||||||||
1966 | 47.87 | 53.29 | 69.37 | a | 74.50 | 83.55 | 86.83 | 95.32 | 86.43 | a | 84.97 | a | 74.71 | 68.97 | a | 57.07 | a | 73.57 | ||||||||
1967 | 60.17 | a | 59.85 | b | 73.47 | a | 78.40 | 82.81 | 87.90 | 89.23 | 87.16 | 82.30 | 79.27 | a | 64.37 | 47.80 | a | 74.39 | ||||||||
1968 | 53.03 | 55.82 | a | 62.35 | 71.34 | a | 81.58 | 94.69 | a | 90.10 | 89.29 | 84.70 | 79.60 | a | 59.79 | a | 57.16 | 73.29 | ||||||||
1969 | 61.48 | 56.39 | 55.81 | 74.48 | a | 80.39 | 87.10 | 94.10 | 91.39 | 82.47 | 69.13 | a | 61.43 | 55.87 | 72.50 | |||||||||||
1970 | 50.70 | a | 61.93 | 60.48 | 72.33 | 84.65 | 87.90 | 91.71 | 92.03 | 84.30 | 69.06 | 64.57 | 59.65 | 73.28 | ||||||||||||
1971 | 57.65 | 58.46 | 69.03 | 74.60 | 81.71 | 92.07 | 91.84 | 83.19 | 81.37 | 73.39 | 62.72 | a | 51.71 | 73.14 | ||||||||||||
1972 | 58.06 | 64.00 | 73.65 | 80.79 | a | 80.26 | 90.00 | a | 88.10 | 85.69 | b | 81.97 | 71.90 | 51.67 | 53.06 | 73.26 | ||||||||||
1973 | 46.61 | 53.46 | 61.19 | 66.63 | 79.52 | 88.73 | 89.35 | 90.35 | 82.77 | 78.45 | b | 68.17 | 57.83 | a | 71.92 | |||||||||||
1974 | 56.29 | 60.96 | 73.55 | 75.90 | 89.23 | 92.97 | 92.87 | 87.30 | a | 76.30 | 71.97 | a | 57.61 | b | 51.60 | a | 73.88 | |||||||||
1975 | 53.97 | 53.56 | a | 65.68 | 71.53 | 80.29 | 90.76 | a | 86.84 | 91.35 | 81.59 | a | 79.30 | a | 63.93 | 57.80 | a | 73.05 | ||||||||
1976 | 55.58 | 66.00 | a | 64.03 | 72.80 | 76.84 | 89.60 | 87.03 | 88.61 | 80.38 | a | 68.97 | 57.61 | b | 56.03 | 71.96 | ||||||||||
1977 | 49.90 | 59.93 | 64.13 | a | 71.77 | 81.32 | 92.93 | c | 91.70 | a | 91.19 | d | 88.79 | b | 76.24 | b | 65.43 | 59.35 | 74.39 | |||||||
1978 | 46.94 | 47.04 | 65.38 | b | 78.27 | d | 81.21 | c | 91.30 | c | 95.58 | 90.08 | e | 80.69 | a | 74.16 | 57.07 | b | 50.00 | e | 71.48 | |||||
1979 | 44.93 | b | 57.92 | d | 63.59 | d | 69.93 | b | 76.29 | c | 82.69 | d | 90.43 | c | 87.21 | c | 83.08 | d | 80.86 | c | 56.23 | d | 54.88 | e | 70.67 | |
1980 | 54.76 | f | 57.37 | b | 64.08 | e | 70.82 | b | 76.88 | e | 95.62 | d | 95.32 | 88.86 | b | 82.40 | 71.17 | a | 57.20 | 60.71 | c | 74.58 | a | |||
1981 | 54.69 | b | 62.63 | a | 61.77 | 76.67 | 79.76 | b | 90.87 | 88.20 | a | 83.86 | b | 81.17 | 69.79 | c | 63.48 | a | 57.00 | 72.49 | ||||||
1982 | 53.96 | g | 54.27 | f | 65.48 | h | 69.59 | h | 77.00 | f | 85.73 | h | 88.36 | f | 90.11 | d | 83.92 | f | 72.76 | b | 57.46 | d | 51.38 | j | 73.44 | i |
1983 | 48.26 | d | 53.45 | f | 63.07 | b | 64.13 | g | 78.27 | i | 83.87 | g | 85.52 | j | 91.29 | c | 87.73 | 72.43 | c | 64.50 | b | 50.10 | j | 71.21 | f | |
1984 | 49.75 | g | 62.92 | d | 65.83 | h | 70.78 | c | 82.33 | a | 87.82 | b | 89.43 | a | 85.27 | a | 85.46 | f | 67.29 | c | 60.96 | e | 49.62 | e | 72.93 | c |
1985 | 46.50 | a | 52.96 | d | 63.32 | c | 75.04 | g | 79.43 | c | 88.70 | 91.82 | c | 92.48 | b | 83.14 | a | 70.77 | a | 64.04 | b | 52.07 | b | 71.38 | a | |
1986 | 62.57 | a | 54.93 | 69.42 | 78.33 | 81.42 | 85.10 | a | 92.58 | 87.16 | 80.79 | b | 68.32 | 56.80 | 47.16 | 72.05 | ||||||||||
1987 | 47.97 | 54.82 | 60.47 | a | 72.93 | c | 78.42 | 88.00 | 93.19 | 87.97 | 80.80 | 75.48 | 59.93 | 48.77 | 70.73 | |||||||||||
1988 | 47.77 | 59.62 | 66.16 | 70.77 | 77.58 | 84.43 | 86.45 | 88.59 | b | 80.56 | c | 78.23 | 65.96 | b | 53.14 | c | 71.61 | |||||||||
1989 | 57.07 | b | 50.71 | 74.32 | 78.80 | 86.08 | f | 86.04 | b | 90.03 | 86.71 | 81.45 | a | 76.37 | a | 62.88 | d | 50.94 | 72.30 | a | ||||||
1990 | 50.32 | 59.07 | a | 63.93 | a | 73.20 | 80.07 | b | 99.20 | 88.52 | 86.06 | 82.13 | 75.32 | 64.83 | a | 51.73 | a | 72.87 | ||||||||
1991 | 46.00 | a | 62.44 | a | 68.35 | 76.30 | 85.06 | 91.56 | e | 86.03 | a | 85.35 | 77.20 | 74.87 | a | 58.00 | 52.33 | a | 71.96 | |||||||
1992 | 49.27 | a | 60.32 | a | 69.18 | c | 76.14 | a | 78.81 | 87.43 | 92.66 | b | 88.33 | a | 84.91 | g | 78.57 | a | 60.83 | 46.31 | r | 74.15 | b | |||
1993 | 53.68 | c | 50.52 | a | 66.93 | a | 78.85 | d | 82.40 | a | 92.45 | a | 94.29 | c | 91.03 | b | 86.64 | b | 75.37 | a | 60.67 | 56.83 | b | 74.14 | ||
1994 | 52.41 | i | 56.92 | d | 62.27 | a | 72.69 | d | 78.13 | a | 96.83 | 95.18 | c | 93.10 | 86.93 | ----- | z | 64.03 | 55.77 | a | 76.19 | b | ||||
1995 | 52.90 | 65.46 | ----- | z | 73.57 | 79.14 | b | 88.80 | 96.32 | 92.37 | a | 86.67 | c | 79.81 | 71.21 | b | 56.55 | 76.62 | a | |||||||
1996 | 60.63 | a | 63.79 | a | 64.68 | 78.79 | b | 93.42 | 92.59 | a | 92.73 | a | 89.29 | 81.77 | 77.19 | 66.07 | 60.23 | 76.76 | ||||||||
1997 | 45.48 | b | 49.54 | b | 72.39 | 63.34 | a | 80.45 | 90.70 | 95.87 | 91.42 | 89.62 | a | 75.84 | 58.52 | c | 50.32 | 71.96 | ||||||||
1998 | 54.81 | e | 59.43 | e | 65.11 | d | 75.12 | d | 90.55 | 96.54 | b | 94.65 | 88.35 | 90.43 | 76.61 | c | 62.77 | 55.77 | a | 75.84 | ||||||
1999 | 59.45 | 64.22 | a | 69.13 | a | 70.65 | d | 81.70 | a | 89.57 | b | 92.03 | 90.60 | a | 83.04 | c | 74.61 | 68.17 | a | 54.03 | 74.77 | |||||
2000 | 62.21 | c | 68.90 | 68.59 | d | 79.29 | b | 90.79 | b | 91.52 | e | 93.20 | a | 94.36 | c | 91.93 | 71.77 | 52.21 | b | 50.81 | 76.30 | |||||
2001 | 45.00 | 59.96 | a | 62.29 | ----- | z | 77.42 | 88.70 | 96.94 | 92.14 | c | 86.13 | 78.55 | b | 62.59 | a | 54.00 | a | 73.07 | a | ||||||
2002 | 56.94 | 57.12 | c | 70.26 | 84.24 | a | 85.93 | c | 95.52 | a | 90.87 | 94.45 | b | 81.38 | a | 67.65 | 58.90 | a | 47.30 | a | 74.21 | |||||
2003 | 57.72 | b | 53.78 | a | 66.43 | a | 78.50 | 89.63 | a | 88.29 | i | 96.33 | j | 95.42 | l | 87.14 | i | 79.78 | h | 65.72 | l | 56.62 | b | 67.11 | f | |
2004 | 53.80 | a | 51.48 | 65.24 | b | 67.43 | 83.32 | 88.40 | 88.90 | a | 84.61 | 81.17 | 69.39 | 53.13 | 51.68 | 69.88 | ||||||||||
2005 | 54.58 | 53.04 | 59.39 | 71.10 | 77.74 | 91.60 | 92.39 | 86.61 | 86.70 | 71.52 | 66.83 | 55.32 | 72.23 | |||||||||||||
2006 | 59.94 | 57.61 | 63.16 | 77.20 | 85.90 | 92.90 | 93.29 | 86.77 | 77.83 | 70.52 | 63.60 | 49.16 | 73.16 | |||||||||||||
2007 | 40.42 | 55.14 | 65.10 | 66.72 | a | 75.03 | 85.40 | 89.74 | 92.45 | 85.03 | 77.94 | 63.80 | 51.61 | 70.70 | ||||||||||||
2008 | 51.23 | 59.34 | 65.06 | 72.83 | 80.48 | 94.17 | 86.13 | 88.10 | 80.47 | 71.13 | 64.37 | 54.97 | 72.36 | |||||||||||||
2009 | 56.87 | 63.39 | 65.84 | 72.67 | 79.47 | a | 90.37 | 90.39 | 90.84 | 79.80 | 68.52 | 63.67 | 45.32 | 72.26 | ||||||||||||
2010 | 51.19 | 44.79 | 59.52 | 71.73 | 77.81 | 93.37 | 88.42 | 90.61 | 88.10 | 75.35 | 61.93 | 55.00 | 71.49 | |||||||||||||
2011 | 52.32 | 52.32 | 68.81 | 76.03 | 80.35 | 94.83 | 95.29 | 94.94 | 84.83 | 74.10 | 61.00 | 41.71 | 73.04 | |||||||||||||
2012 | 56.42 | 52.72 | 69.16 | 77.27 | 82.26 | 92.47 | 92.84 | 91.58 | 84.43 | 74.16 | 69.43 | 57.19 | 74.99 | |||||||||||||
2013 | 50.35 | 53.50 | 64.58 | 71.47 | 82.65 | 92.31 | a | 88.13 | 91.61 | 83.60 | 72.87 | 56.80 | 50.10 | 71.50 | ||||||||||||
2014 | 52.00 | 54.96 | 63.61 | 72.57 | 78.35 | 87.63 | 88.65 | 89.00 | 78.10 | 74.42 | 55.40 | 51.06 | 70.48 | |||||||||||||
2015 | 41.23 | 53.39 | 60.58 | 70.90 | 72.81 | 85.80 | 89.29 | 89.19 | 86.73 | 69.65 | 59.23 | 51.87 | 69.22 | |||||||||||||
2016 | 48.55 | 59.69 | 66.71 | 70.43 | 76.29 | 87.87 | 95.29 | 86.58 | 80.40 | 78.26 | 63.57 | 49.97 | 71.97 | |||||||||||||
2017 | 49.42 | 62.21 | 70.32 | 71.63 | 78.26 | 91.07 | 91.71 | 82.32 | 79.90 | 71.00 | 65.60 | 53.68 | 72.26 | |||||||||||||
2018 | 52.19 | 57.96 | 66.55 | 70.97 | 86.48 | 92.30 | 91.06 | 87.94 | 82.17 | 68.48 | 55.60 | 51.45 | 71.93 | |||||||||||||
2019 | 52.77 | 58.14 | 60.48 | 71.47 | 77.94 | 88.60 | 94.19 | 93.77 | 88.53 | 65.58 | 57.83 | 53.87 | 71.93 | |||||||||||||
2020 | 51.42 | 51.14 | 63.90 | 70.27 | 84.23 | 91.77 | 93.23 | 94.71 | 81.47 | 73.32 | 65.07 | 54.13 | 72.89 | |||||||||||||
2021 | 49.23 | 51.04 | 63.58 | 69.00 | 77.71 | 89.10 | 84.87 | a | 86.35 | 86.30 | g | 77.39 | 65.83 | 62.07 | a | 70.56 | a | |||||||||
2022 | 53.55 | 51.82 | 64.16 | 75.67 | 85.94 | 90.21 | b | 96.19 | 86.13 | 85.27 | 69.29 | 57.62 | a | 51.84 | 72.31 | |||||||||||
2023 | 52.68 | 54.75 | 62.26 | 71.33 | 78.40 | f | 86.17 | 94.52 | 93.97 | 85.47 | 72.87 | 62.13 | 55.68 | 71.98 | a | |||||||||||
2024 | 47.23 | 58.86 | 62.19 | 71.73 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 60.00 | h | ||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 52.50 | 57.07 | 64.91 | 73.46 | 81.35 | 90.33 | 91.37 | 89.33 | 83.44 | 73.77 | 61.59 | 53.47 | 72.68 | |||||||||||||
S.D. | 4.97 | 5.06 | 4.13 | 3.78 | 3.99 | 3.22 | 3.06 | 2.88 | 3.30 | 3.73 | 4.48 | 3.99 | 1.52 | |||||||||||||
SKEW | -0.04 | -0.04 | -0.01 | 0.09 | 0.74 | 0.28 | -0.22 | -0.05 | 0.31 | -0.11 | -0.35 | -0.37 | 0.37 | |||||||||||||
MAX | 62.57 | 68.90 | 74.32 | 84.24 | 93.42 | 99.20 | 96.94 | 94.94 | 91.93 | 80.86 | 71.21 | 62.07 | 76.76 | |||||||||||||
MIN | 40.42 | 44.79 | 52.42 | 63.34 | 72.81 | 82.69 | 84.26 | 82.32 | 76.30 | 65.58 | 51.63 | 41.71 | 69.22 | |||||||||||||
YRS | 71 | 73 | 72 | 71 | 70 | 71 | 72 | 74 | 70 | 73 | 74 | 72 | 61 |