YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1942 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1943 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1944 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1945 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | 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 | ----- | z | ----- | z | ----- | z |
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1963 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1964 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1965 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 91.50 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 91.50 | k | |
1966 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1967 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 68.60 | 52.45 | 60.53 | j | ||
1968 | 56.15 | 65.43 | 65.63 | 68.60 | a | 77.35 | 85.33 | 89.87 | 86.52 | 85.63 | 75.56 | 66.30 | 52.74 | 72.93 | ||||||||||||
1969 | 58.69 | 55.96 | 63.03 | 69.25 | 78.52 | 80.78 | 90.39 | 94.85 | 87.43 | 71.56 | 63.93 | 57.29 | 72.64 | |||||||||||||
1970 | 55.65 | 61.54 | 63.66 | 65.03 | 78.53 | 85.48 | 92.31 | 92.34 | 83.48 | 71.92 | 64.18 | 53.48 | 72.30 | |||||||||||||
1971 | 55.42 | 59.50 | 64.61 | 66.87 | 71.58 | 82.57 | 92.37 | 90.71 | 85.38 | 68.74 | 62.35 | 51.85 | 71.00 | |||||||||||||
1972 | 54.15 | 63.95 | 72.85 | 67.83 | 77.40 | a | 85.38 | 93.24 | 88.06 | 82.47 | 70.98 | 59.73 | 54.24 | 72.52 | ||||||||||||
1973 | 52.97 | 58.09 | 58.29 | 69.30 | 79.48 | 87.95 | 90.56 | 88.74 | 82.02 | 75.19 | 63.18 | 58.24 | 72.00 | |||||||||||||
1974 | 53.83 | a | 57.66 | 63.95 | 69.45 | 76.85 | 89.70 | 90.61 | 90.44 | 87.93 | 75.40 | 64.10 | 54.45 | 72.87 | ||||||||||||
1975 | 56.74 | 57.16 | 60.83 | a | 61.38 | 76.15 | 84.57 | 91.08 | 90.58 | 87.05 | 73.32 | 64.30 | 57.77 | 71.74 | ||||||||||||
1976 | 57.92 | 60.62 | 62.03 | 65.72 | 77.93 | b | 85.50 | 90.82 | 87.08 | 81.22 | 74.52 | 65.65 | 57.23 | 72.19 | ||||||||||||
1977 | 55.68 | a | 63.84 | 59.74 | 71.62 | 69.90 | a | 87.74 | a | 92.68 | 90.29 | 83.23 | 77.26 | 66.75 | 60.73 | 73.29 | ||||||||||
1978 | 55.77 | 58.14 | 63.35 | 64.32 | 76.24 | 87.55 | 92.23 | 89.76 | 83.12 | 80.06 | 61.52 | 52.47 | 72.04 | |||||||||||||
1979 | 50.71 | 56.16 | 61.32 | 69.32 | 75.48 | 86.28 | 90.37 | 86.61 | 89.73 | 77.26 | 61.83 | 59.87 | 72.08 | |||||||||||||
1980 | 59.20 | a | 61.31 | b | 59.74 | 68.28 | 69.65 | 82.52 | 92.94 | 89.48 | 85.38 | 76.95 | 65.78 | 62.89 | 72.84 | |||||||||||
1981 | 60.95 | 61.96 | a | 61.31 | 71.95 | 76.42 | 90.93 | 92.61 | 93.52 | 86.55 | 71.52 | 66.43 | 60.55 | 74.56 | ||||||||||||
1982 | 53.90 | 61.23 | 60.94 | 68.43 | 74.82 | 80.62 | 88.63 | a | 90.50 | 82.90 | a | 73.50 | 60.62 | 54.34 | 70.87 | |||||||||||
1983 | 57.48 | 58.02 | 60.97 | 62.60 | 75.37 | 81.20 | 89.29 | 85.81 | 83.07 | a | 73.89 | 62.68 | 56.85 | 70.60 | ||||||||||||
1984 | 58.87 | 60.02 | 65.94 | 68.08 | 82.60 | 83.63 | 90.06 | 89.39 | 87.33 | a | 70.48 | 60.73 | 52.77 | 72.49 | ||||||||||||
1985 | 53.35 | 55.68 | 60.87 | 73.10 | 77.45 | 87.48 | 92.15 | 90.37 | 77.84 | b | 73.84 | 60.03 | a | 57.08 | 71.60 | |||||||||||
1986 | 61.37 | 60.41 | a | 66.90 | 68.63 | 77.45 | a | 87.92 | 87.55 | 92.50 | 78.72 | 72.08 | a | 64.67 | 56.39 | 72.88 | ||||||||||
1987 | 53.66 | 58.98 | 61.63 | 75.19 | a | 78.27 | 88.02 | 88.21 | 90.37 | a | 86.57 | 78.97 | 62.38 | b | 52.41 | d | 72.89 | |||||||||
1988 | 55.41 | c | 62.38 | a | 66.27 | 69.75 | 78.14 | b | 85.02 | b | 92.95 | a | 90.97 | 85.84 | a | 82.21 | 65.62 | 57.50 | 74.34 | |||||||
1989 | 54.27 | 58.71 | 70.18 | a | 77.81 | a | 78.56 | 87.05 | 94.27 | 89.40 | 87.12 | 76.10 | a | 68.05 | 59.10 | 75.05 | ||||||||||
1990 | 56.79 | 58.00 | 67.48 | d | 73.15 | 75.45 | 88.69 | a | 94.10 | 89.98 | b | 87.15 | 78.02 | a | 66.41 | b | 53.69 | 74.08 | ||||||||
1991 | 57.38 | b | 66.48 | 59.24 | 68.50 | 74.08 | 81.93 | 91.17 | a | 90.44 | 87.17 | 80.31 | 66.07 | 56.79 | b | 73.30 | ||||||||||
1992 | 56.58 | 62.23 | a | 61.79 | 74.53 | 80.56 | 83.95 | 89.08 | 90.71 | 87.07 | 75.92 | 61.58 | 51.17 | a | 72.93 | |||||||||||
1993 | 53.00 | c | 56.42 | c | 67.59 | h | 71.80 | 76.47 | 83.55 | 85.87 | 87.82 | 84.13 | 75.07 | b | 61.30 | b | 55.53 | a | 71.91 | a | ||||||
1994 | 59.22 | a | 55.50 | 65.73 | 69.62 | a | 74.52 | a | 89.27 | 91.38 | a | 92.29 | 86.10 | 73.00 | 56.08 | 55.20 | a | 72.33 | ||||||||
1995 | 55.39 | 63.70 | 63.62 | a | 68.05 | 71.42 | 84.17 | 91.39 | 94.37 | 88.33 | 77.08 | 69.57 | 59.97 | 73.92 | ||||||||||||
1996 | 59.58 | 63.03 | 66.28 | b | 74.10 | 80.32 | a | 87.12 | 94.00 | 92.94 | 84.28 | 74.71 | 65.34 | a | 58.18 | a | 74.99 | |||||||||
1997 | 58.33 | a | 59.68 | 70.12 | a | 70.30 | 84.76 | 83.15 | 89.40 | 92.81 | 87.47 | a | 73.25 | a | 64.73 | 53.82 | 73.98 | |||||||||
1998 | 56.63 | 55.80 | 61.55 | c | 65.08 | 69.71 | 79.62 | a | 92.79 | 94.18 | 83.52 | 72.89 | 63.33 | 55.77 | a | 70.91 | ||||||||||
1999 | 58.69 | 59.76 | a | 61.47 | a | 64.69 | c | 75.29 | 83.97 | a | 89.74 | 89.66 | 85.93 | a | 79.29 | 67.37 | 58.35 | 72.85 | ||||||||
2000 | 60.52 | 60.05 | 63.34 | b | 73.90 | a | 81.66 | 88.21 | a | 91.13 | 91.11 | 85.47 | a | 72.03 | 59.13 | 59.74 | 73.86 | |||||||||
2001 | 54.27 | 57.13 | e | 64.68 | a | 66.45 | a | 83.77 | 88.63 | 90.34 | b | 92.84 | 89.31 | a | 78.79 | b | 67.69 | a | 55.10 | 74.08 | ||||||
2002 | 56.31 | 60.07 | 63.14 | b | 71.62 | b | 76.85 | a | 88.76 | a | 93.90 | 90.82 | 87.73 | b | 73.03 | 66.31 | a | 56.00 | a | 73.71 | ||||||
2003 | 63.65 | 57.87 | b | 65.30 | c | 64.28 | a | 78.61 | 85.97 | 94.68 | 91.71 | 88.50 | a | 82.31 | 60.88 | 56.55 | a | 74.19 | ||||||||
2004 | 57.30 | a | 55.79 | 71.69 | 72.13 | 79.05 | 85.13 | 92.03 | 90.58 | 84.57 | a | 72.79 | c | 62.91 | n | 55.55 | 74.24 | a | ||||||||
2005 | 56.55 | c | 56.54 | a | 62.77 | a | 67.75 | 78.18 | 82.95 | 93.72 | b | 90.79 | 83.59 | a | 75.84 | f | 66.03 | a | 58.71 | 72.51 | a | |||||
2006 | 57.74 | 61.02 | 58.48 | 66.75 | b | 80.33 | a | 90.62 | 95.97 | 90.89 | 85.10 | 72.92 | 67.45 | 55.37 | 73.55 | |||||||||||
2007 | 52.90 | a | 60.04 | 68.63 | 71.53 | a | 79.35 | a | 87.03 | a | 92.58 | a | 93.03 | 84.28 | a | 74.65 | a | 68.18 | b | 52.28 | a | 73.71 | ||||
2008 | 53.55 | 59.11 | a | 66.22 | a | 70.48 | 74.52 | a | 89.42 | 92.50 | 91.95 | a | 88.40 | 77.88 | c | 68.34 | h | 55.52 | a | 74.50 | a | |||||
2009 | 59.81 | 57.59 | 63.24 | 68.48 | 83.63 | 81.45 | 94.87 | 91.02 | 88.37 | 72.68 | 65.63 | 54.68 | 73.45 | |||||||||||||
2010 | 56.84 | 58.93 | 61.69 | 65.45 | 72.13 | 84.13 | 92.58 | 90.39 | 86.27 | 73.40 | 62.12 | 59.40 | 71.94 | |||||||||||||
2011 | 56.28 | a | 54.26 | a | 63.26 | 69.39 | b | 70.81 | 82.32 | 91.39 | 93.48 | 88.24 | a | 77.21 | 60.95 | 53.64 | x | 73.42 | a | |||||||
2012 | 60.16 | 59.95 | 65.48 | 72.30 | 81.60 | 87.57 | 91.94 | 93.44 | 88.73 | 76.48 | 67.58 | 57.56 | 75.23 | |||||||||||||
2013 | 53.16 | 58.16 | 71.03 | 74.70 | 80.74 | 90.63 | 93.15 | 89.73 | 83.85 | 70.31 | 63.65 | 57.13 | 73.85 | |||||||||||||
2014 | 63.60 | 65.23 | 68.94 | 73.02 | 79.37 | 87.53 | 93.56 | 88.85 | 87.75 | 79.39 | 66.62 | 58.37 | 76.02 | |||||||||||||
2015 | 59.81 | 66.89 | 71.53 | 71.37 | 73.85 | 89.30 | 88.89 | 94.10 | 88.02 | 79.53 | 62.15 | 56.05 | 75.12 | |||||||||||||
2016 | 56.43 | a | 65.34 | 69.02 | 72.87 | 75.90 | a | 90.77 | 94.07 | a | 93.40 | b | 83.37 | 78.37 | a | 67.97 | 58.00 | b | 75.46 | |||||||
2017 | 55.73 | 61.30 | 69.31 | 73.78 | 77.34 | 89.38 | 95.11 | 93.08 | 83.50 | 78.26 | 69.62 | 61.24 | 75.64 | |||||||||||||
2018 | 63.26 | 60.71 | 65.63 | 75.00 | 77.94 | 87.45 | 95.85 | 94.00 | b | 89.40 | 75.24 | 64.95 | a | 57.79 | 75.60 | |||||||||||
2019 | 56.77 | 53.14 | 63.27 | 73.03 | 71.21 | 86.03 | 91.45 | 93.53 | a | 85.17 | 74.21 | 66.43 | 55.21 | 72.46 | ||||||||||||
2020 | 58.24 | 60.72 | 60.90 | 70.23 | 81.35 | 85.43 | 93.26 | 95.94 | 89.80 | 80.89 | 66.42 | 57.97 | 75.10 | |||||||||||||
2021 | 58.23 | 62.50 | a | 62.31 | 74.08 | 78.68 | 91.73 | 95.11 | 93.30 | a | 87.65 | 73.27 | 71.18 | 58.21 | 75.52 | |||||||||||
2022 | 59.81 | b | 60.21 | 68.09 | b | 73.52 | 78.89 | 89.38 | 93.82 | 93.37 | 88.27 | d | 76.87 | 60.17 | 56.53 | 74.91 | ||||||||||
2023 | 55.13 | 54.32 | 58.69 | 71.38 | 75.89 | 79.92 | 95.66 | 91.82 | 83.48 | 77.47 | 65.70 | 60.15 | a | 72.47 | ||||||||||||
2024 | 57.44 | 59.17 | 61.79 | 67.31 | l | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 59.47 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 56.97 | 59.71 | 64.28 | 69.93 | 77.11 | 86.04 | 91.99 | 91.19 | 85.71 | 75.43 | 64.51 | 56.51 | 73.35 | |||||||||||||
S.D. | 2.81 | 3.14 | 3.67 | 3.52 | 3.57 | 3.10 | 2.17 | 2.22 | 2.62 | 3.17 | 3.07 | 2.66 | 1.39 | |||||||||||||
SKEW | 0.35 | 0.26 | 0.52 | -0.24 | -0.24 | -0.24 | -0.36 | -0.30 | -0.73 | 0.21 | -0.29 | 0.01 | 0.05 | |||||||||||||
MAX | 63.65 | 66.89 | 72.85 | 77.81 | 84.76 | 91.73 | 95.97 | 95.94 | 89.80 | 82.31 | 71.18 | 62.89 | 76.02 | |||||||||||||
MIN | 50.71 | 53.14 | 58.29 | 61.38 | 69.65 | 79.62 | 85.87 | 85.81 | 77.84 | 68.74 | 56.08 | 51.17 | 70.60 | |||||||||||||
YRS | 57 | 57 | 56 | 56 | 56 | 56 | 57 | 56 | 56 | 55 | 55 | 56 | 51 |