YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 89.40 | u | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 65.07 | a | 56.20 | a | 60.63 | j |
1956 | 53.10 | 57.86 | 65.77 | 69.13 | 74.65 | 85.30 | 87.81 | 87.35 | 85.67 | 75.42 | 72.80 | 63.00 | 73.15 | |||||||||||||
1957 | 53.97 | a | 59.39 | 63.45 | 70.37 | 71.03 | 88.47 | 88.58 | 89.06 | 86.23 | 70.97 | 65.33 | 54.58 | 71.79 | ||||||||||||
1958 | 57.29 | 59.39 | 59.94 | 70.30 | 79.45 | 81.40 | 86.16 | 92.26 | 91.27 | 83.42 | 68.70 | 67.74 | 74.78 | |||||||||||||
1959 | 58.58 | 59.68 | 71.03 | 77.83 | 76.29 | 88.10 | 94.61 | 90.00 | 84.23 | 82.10 | 73.77 | 63.45 | 76.64 | |||||||||||||
1960 | 54.00 | 60.79 | 64.19 | 68.90 | 73.94 | 88.83 | 92.68 | 90.42 | 87.80 | 76.19 | 62.70 | 56.84 | 73.11 | |||||||||||||
1961 | 56.03 | 61.50 | 61.39 | 74.03 | a | 70.65 | 88.87 | 95.55 | 90.23 | 86.07 | 79.61 | 66.37 | 56.06 | 73.86 | ||||||||||||
1962 | 62.20 | a | 58.29 | 60.61 | 76.10 | 74.81 | 85.30 | 89.06 | 88.97 | 84.53 | 73.35 | 67.52 | a | 58.71 | c | 73.29 | ||||||||||
1963 | 59.42 | g | 65.68 | c | 61.84 | 62.63 | k | 73.60 | f | 81.19 | c | 87.39 | 89.16 | 86.77 | 71.87 | 61.73 | 52.90 | 73.17 | c | |||||||
1964 | 55.10 | 66.34 | 64.29 | 69.63 | 73.29 | 81.90 | 91.87 | 91.90 | 85.57 | 81.45 | 60.80 | 57.32 | 73.29 | |||||||||||||
1965 | 57.03 | 62.86 | 66.35 | 65.90 | 77.42 | 77.77 | 87.58 | 88.94 | 80.57 | 83.84 | 62.70 | 53.77 | 72.06 | |||||||||||||
1966 | 57.45 | 58.00 | 62.23 | 77.43 | 78.81 | 85.37 | 87.16 | 91.06 | 87.03 | 80.84 | 64.50 | 54.61 | 73.71 | |||||||||||||
1967 | 58.39 | 64.79 | 60.00 | 56.50 | 78.45 | 79.13 | 92.94 | 93.97 | 88.83 | 82.06 | 71.47 | 58.97 | 73.79 | |||||||||||||
1968 | 56.23 | 62.10 | 66.58 | 74.77 | 75.32 | 87.03 | 90.90 | 85.23 | 87.03 | 76.68 | 62.77 | 52.84 | 73.12 | |||||||||||||
1969 | 52.16 | 52.71 | 65.03 | 68.17 | 78.55 | 77.77 | 90.90 | 94.97 | 89.37 | 73.81 | 69.87 | 59.90 | 72.77 | |||||||||||||
1970 | 56.81 | 64.64 | 67.94 | 68.87 | 80.84 | 84.80 | 91.10 | 89.45 | 90.30 | 74.74 | 63.93 | 53.00 | 73.87 | |||||||||||||
1971 | 57.87 | 61.82 | 62.94 | 66.50 | ----- | z | 83.77 | 91.65 | 92.90 | 88.83 | 77.74 | 67.60 | 53.81 | 73.22 | a | |||||||||||
1972 | 55.84 | 60.10 | 68.35 | 68.77 | 78.45 | 85.00 | 89.77 | 90.45 | 82.17 | 71.16 | 61.87 | 50.81 | 71.90 | |||||||||||||
1973 | 54.35 | 59.71 | 60.16 | 74.50 | 82.74 | 89.57 | 90.68 | 89.10 | 83.87 | 77.55 | 58.77 | 54.35 | 72.95 | |||||||||||||
1974 | 55.32 | 59.43 | 60.74 | 67.63 | 77.23 | 85.77 | 88.68 | 88.77 | 87.93 | 81.39 | 63.97 | 56.35 | 72.77 | |||||||||||||
1975 | 58.84 | 57.11 | 59.58 | 63.23 | 80.71 | 85.70 | 89.26 | 87.71 | 86.20 | 72.29 | 62.77 | 60.10 | 71.96 | |||||||||||||
1976 | 61.35 | 60.34 | 63.81 | 65.50 | 82.97 | 86.30 | 90.00 | 83.84 | 84.47 | 81.45 | 70.00 | 63.68 | 74.48 | |||||||||||||
1977 | 56.03 | 67.00 | 62.61 | 73.63 | 67.90 | 86.07 | 92.10 | 89.87 | 81.87 | 76.32 | 65.00 | 59.55 | 73.16 | |||||||||||||
1978 | 57.65 | 60.21 | 67.10 | 65.87 | 79.68 | 84.20 | 91.13 | 90.87 | 84.87 | 83.77 | 66.40 | 56.84 | 74.05 | |||||||||||||
1979 | 54.81 | 56.68 | 62.97 | 68.13 | 78.71 | 88.27 | 90.81 | 88.77 | 88.83 | 75.58 | 62.27 | 61.97 | 73.15 | |||||||||||||
1980 | 59.61 | 61.83 | 65.97 | a | 71.67 | 77.94 | 81.20 | 92.03 | 87.42 | 86.37 | 82.72 | b | 72.05 | i | 62.55 | b | 75.39 | a | ||||||||
1981 | 58.23 | 64.50 | 64.55 | 74.40 | 80.06 | 91.07 | 91.17 | b | 92.00 | 84.87 | 74.71 | 66.13 | 58.57 | c | 75.02 | |||||||||||
1982 | 55.77 | a | 63.32 | 62.32 | 68.33 | 81.26 | 80.70 | 90.19 | 91.16 | 86.17 | 76.71 | 61.63 | 57.94 | 72.96 | ||||||||||||
1983 | 57.87 | 60.46 | 59.81 | 64.87 | 78.94 | ----- | z | ----- | z | 91.03 | 89.43 | 80.43 | a | 63.10 | 56.39 | 70.23 | b | |||||||||
1984 | 62.19 | 62.45 | 71.45 | 70.70 | 82.26 | 87.93 | 95.23 | 91.90 | 94.10 | 71.42 | 60.07 | 55.87 | 75.46 | |||||||||||||
1985 | 56.26 | 66.61 | 61.35 | 75.83 | 78.84 | 89.33 | 92.97 | 87.29 | 81.10 | 75.23 | 61.24 | a | 57.06 | 73.59 | ||||||||||||
1986 | 60.19 | 63.46 | 70.97 | a | 71.50 | 78.03 | 85.60 | 88.81 | 89.77 | 78.63 | 78.13 | 72.20 | 59.13 | 74.70 | ||||||||||||
1987 | 57.84 | 62.86 | 63.81 | 79.20 | 83.74 | 88.60 | 87.32 | ----- | z | 89.33 | 81.61 | 64.70 | 54.67 | a | 73.97 | a | ||||||||||
1988 | 57.52 | 69.03 | 73.03 | 72.77 | 75.16 | 84.23 | 94.23 | 91.74 | 89.57 | 80.68 | 62.73 | 61.03 | 75.98 | |||||||||||||
1989 | 59.90 | 58.89 | 63.73 | a | 75.83 | 78.03 | ----- | z | 92.77 | 90.52 | 81.90 | 74.97 | a | 68.57 | 61.48 | b | 73.33 | a | ||||||||
1990 | 58.42 | 59.21 | 67.26 | 74.91 | g | 76.16 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 66.83 | 54.29 | 63.70 | f | ||||||
1991 | 60.48 | 68.07 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 64.28 | j | ||
1992 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 97.48 | 89.96 | b | 80.97 | a | 64.32 | h | 52.50 | g | 89.47 | i | |
1993 | 54.72 | f | 56.57 | g | 69.15 | e | 70.54 | f | 77.42 | l | 91.00 | g | 94.65 | k | 94.25 | k | 88.82 | h | 78.35 | h | 64.67 | i | 54.48 | j | 69.15 | k |
1994 | 56.79 | b | 57.64 | f | 69.84 | f | 73.64 | h | 79.38 | g | 91.04 | g | 94.78 | m | 94.17 | h | 86.15 | j | 75.09 | i | 53.70 | j | 49.16 | f | 56.79 | k |
1995 | 54.36 | f | 63.72 | j | 63.04 | h | 67.84 | k | 76.64 | c | 87.95 | j | 94.72 | f | 93.33 | g | 86.76 | i | 80.21 | g | 69.43 | g | 55.08 | g | 76.64 | k |
1996 | 56.73 | i | 59.58 | e | 67.04 | f | 74.65 | j | 80.91 | i | 93.04 | e | 97.95 | i | 94.96 | d | 83.60 | e | 75.93 | d | 63.59 | h | 56.32 | f | 81.42 | g |
1997 | 56.88 | f | 62.79 | i | 70.30 | h | 74.35 | g | 87.00 | i | 91.41 | h | 95.14 | c | 90.38 | e | 88.93 | b | 75.24 | f | 62.97 | a | 55.97 | a | 78.68 | g |
1998 | 56.00 | b | 56.95 | f | 65.38 | b | ----- | z | 70.47 | a | 81.15 | d | 92.63 | d | 96.23 | e | 88.00 | d | 75.84 | f | 60.04 | c | 57.57 | c | 74.16 | c |
1999 | 58.04 | d | 57.62 | d | 60.97 | b | 73.96 | e | 78.96 | e | 88.42 | d | 91.10 | j | 90.52 | h | ----- | z | 81.12 | e | 64.70 | c | 62.17 | a | 69.55 | c |
2000 | 56.93 | a | 58.85 | b | 68.67 | d | 76.23 | d | 82.65 | e | 88.37 | c | 90.24 | b | ----- | z | 88.38 | d | 74.57 | c | ----- | z | 59.83 | a | 74.47 | b |
2001 | 57.30 | a | 59.88 | c | 71.22 | d | 72.33 | f | 92.27 | e | 91.30 | g | 91.07 | d | 93.29 | j | 87.60 | j | 80.64 | i | 64.00 | d | 54.57 | a | 70.04 | e |
2002 | 56.21 | c | 64.85 | a | 66.08 | e | 71.42 | k | 79.58 | g | 88.32 | h | 93.62 | g | 90.63 | d | 89.50 | h | 80.44 | d | 68.22 | c | 57.24 | b | 69.10 | e |
2003 | 62.52 | b | 64.25 | h | 67.56 | f | 62.54 | f | 79.68 | f | 86.52 | g | 94.85 | k | 89.29 | n | 88.62 | f | 84.39 | c | 58.85 | c | 55.88 | f | 68.59 | i |
2004 | 57.07 | c | 59.32 | a | 76.86 | b | 75.72 | a | 80.57 | c | 88.64 | b | 92.13 | h | 92.84 | f | 90.77 | d | 75.38 | e | 65.04 | d | 60.15 | e | 72.95 | b |
2005 | 55.89 | d | 62.54 | b | 68.40 | a | 68.73 | d | 75.97 | a | 78.96 | b | 94.19 | 89.97 | 84.69 | d | 78.92 | f | 66.29 | b | 58.17 | b | 73.07 | a | ||
2006 | 58.38 | b | 63.96 | c | 56.03 | b | 66.93 | c | 81.38 | g | 90.30 | g | 96.32 | f | 90.08 | f | 90.65 | m | 78.38 | g | 64.81 | c | 57.56 | f | 62.02 | g |
2007 | 59.12 | f | 59.74 | i | 75.10 | b | 74.76 | e | 80.28 | b | 87.20 | 92.20 | f | 94.14 | j | 84.41 | h | 72.61 | h | 68.14 | h | 55.59 | d | 74.59 | g | |
2008 | 53.57 | a | 63.65 | c | 68.60 | a | 74.81 | c | 81.14 | b | 88.88 | d | 93.54 | e | 93.52 | d | 88.36 | e | 82.92 | e | 68.00 | h | 55.10 | b | 76.74 | a |
2009 | 65.20 | a | 58.92 | d | 68.11 | c | 73.00 | d | 80.96 | e | 85.24 | e | 92.50 | g | 91.93 | d | 93.00 | g | 76.64 | f | 65.95 | i | 54.71 | g | 74.76 | e |
2010 | 54.00 | m | ----- | z | 67.85 | d | 68.04 | g | 74.81 | e | 88.13 | 90.00 | e | 89.76 | f | 91.78 | g | 79.54 | g | 67.00 | e | 56.96 | e | 74.13 | f | |
2011 | 63.65 | 61.62 | d | 62.52 | b | 70.93 | c | 76.84 | 84.41 | a | 90.65 | 91.74 | d | 94.54 | d | 79.41 | d | 63.00 | g | 63.00 | f | 77.63 | b | |||
2012 | 63.44 | d | 67.64 | d | 61.69 | e | 72.31 | d | 84.30 | d | 87.42 | d | 92.93 | a | 94.33 | a | 89.23 | 79.77 | 67.17 | a | 56.97 | 76.43 | ||||
2013 | 61.77 | 66.82 | 69.90 | 78.53 | 81.97 | 89.40 | 93.26 | 90.45 | 85.80 | 80.87 | 72.27 | 65.84 | 78.07 | |||||||||||||
2014 | 71.03 | b | 64.50 | 71.61 | 77.20 | 85.29 | 90.23 | 93.39 | 91.90 | 87.93 | b | 87.00 | 70.47 | 59.87 | 79.20 | |||||||||||
2015 | 66.84 | 69.82 | 77.97 | 77.77 | 78.68 | 93.33 | 92.97 | 92.45 | 90.48 | a | 87.20 | a | 67.73 | 56.00 | 79.27 | |||||||||||
2016 | 56.71 | 70.07 | 67.48 | 77.48 | a | 80.26 | 90.73 | 94.81 | ----- | z | ----- | z | 75.90 | 69.97 | 59.71 | 74.31 | b | |||||||||
2017 | 56.48 | 59.93 | 71.35 | 71.30 | 83.65 | 91.73 | 98.79 | b | 96.19 | d | 91.28 | a | 88.30 | k | 65.13 | 64.39 | c | 77.29 | a | |||||||
2018 | 60.96 | f | 68.80 | h | 64.83 | g | 75.78 | l | 82.96 | g | 92.68 | b | 97.54 | c | 94.89 | l | 90.44 | l | 79.55 | 71.07 | c | ----- | z | 85.21 | h | |
2019 | 60.77 | e | 54.14 | 64.03 | 74.13 | 75.00 | 89.38 | d | 89.65 | 91.80 | a | 85.71 | b | 79.79 | c | 71.40 | 55.65 | 74.29 | ||||||||
2020 | 58.48 | 69.55 | 61.07 | d | 71.76 | a | 78.06 | 85.60 | 89.53 | a | 92.35 | 88.70 | 87.10 | 66.43 | 60.80 | a | 75.79 | |||||||||
2021 | 59.68 | 63.18 | 64.26 | 74.67 | 81.35 | 87.77 | 92.93 | a | 90.94 | 88.30 | 73.48 | 67.23 | 54.10 | b | 74.82 | |||||||||||
2022 | 61.94 | 67.86 | 71.06 | 69.30 | 77.16 | 86.47 | 89.35 | 92.74 | 88.43 | 79.00 | 61.17 | 55.06 | 74.96 | |||||||||||||
2023 | 58.10 | 58.54 | 56.87 | 70.00 | 75.48 | 78.97 | 93.29 | 90.71 | 82.03 | 78.20 | a | 68.53 | 59.61 | 72.53 | ||||||||||||
2024 | 58.26 | 60.31 | 63.45 | 73.17 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 60.67 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 58.26 | 62.04 | 65.56 | 71.63 | 78.48 | 86.19 | 91.49 | 90.94 | 86.92 | 78.58 | 65.73 | 57.89 | 74.24 | |||||||||||||
S.D. | 3.39 | 3.88 | 4.67 | 4.51 | 4.08 | 3.87 | 2.66 | 2.60 | 3.28 | 4.17 | 3.73 | 3.53 | 1.87 | |||||||||||||
SKEW | 1.22 | 0.22 | 0.48 | -0.66 | 0.19 | -0.45 | 0.32 | 0.04 | -0.21 | 0.08 | 0.22 | 0.56 | 1.17 | |||||||||||||
MAX | 71.03 | 70.07 | 77.97 | 79.20 | 92.27 | 93.33 | 98.79 | 97.48 | 94.54 | 87.20 | 73.77 | 67.74 | 79.27 | |||||||||||||
MIN | 52.16 | 52.71 | 56.03 | 56.50 | 67.90 | 77.77 | 86.16 | 83.84 | 78.63 | 70.97 | 58.77 | 50.81 | 71.79 | |||||||||||||
YRS | 60 | 59 | 61 | 53 | 56 | 55 | 53 | 52 | 53 | 54 | 57 | 58 | 37 |