YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1940 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1941 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | 90.03 | 87.13 | 73.52 | 58.40 | 52.13 | 72.24 | g | |||||
1949 | 38.06 | 49.96 | 59.29 | 70.89 | c | 77.16 | 86.50 | 90.39 | 90.55 | 85.70 | 68.81 | 70.40 | 51.84 | 69.96 | ||||||||||||
1950 | 51.42 | 59.82 | 63.55 | 74.53 | 78.52 | 88.90 | 87.13 | 92.06 | 82.57 | 83.26 | 69.50 | 63.81 | 74.59 | |||||||||||||
1951 | 53.29 | 54.89 | 60.16 | 67.10 | 76.71 | 87.67 | 95.16 | 88.06 | 86.93 | 73.35 | 59.03 | 50.03 | 71.03 | |||||||||||||
1952 | 51.10 | 54.31 | 51.23 | 66.17 | 80.29 | 88.70 | 92.58 | 92.39 | 87.83 | 83.23 | a | 55.77 | 51.65 | 71.27 | ||||||||||||
1953 | 60.52 | 57.39 | 62.94 | 69.10 | 72.90 | 90.30 | 90.87 | 89.32 | 90.89 | c | 75.87 | 65.70 | 53.42 | 73.27 | ||||||||||||
1954 | 55.55 | 65.50 | 59.10 | 76.73 | 81.52 | 88.50 | 92.13 | 86.41 | b | 86.97 | 79.32 | 70.80 | 58.26 | 75.07 | ||||||||||||
1955 | 47.45 | 54.25 | 65.29 | 70.00 | 77.87 | 86.37 | 88.65 | 86.33 | a | 87.87 | 80.81 | 63.93 | 58.84 | 72.30 | ||||||||||||
1956 | 57.87 | 51.59 | 68.93 | a | 69.60 | e | 82.48 | 92.67 | 91.35 | 89.10 | 92.45 | a | 75.52 | 64.93 | 59.48 | 74.66 | ||||||||||
1957 | 49.55 | 63.82 | 62.00 | 67.47 | 72.55 | 89.37 | 92.00 | 85.39 | 87.10 | 67.35 | 55.54 | d | 58.81 | 70.91 | ||||||||||||
1958 | 57.16 | 59.18 | 53.03 | 67.40 | 83.61 | 89.47 | 93.97 | 90.94 | 82.30 | 73.74 | 62.50 | 64.71 | 73.17 | |||||||||||||
1959 | 59.74 | 54.82 | 67.19 | 74.60 | 77.19 | 92.27 | 95.45 | 85.90 | 83.13 | 75.26 | 64.67 | 54.23 | 73.70 | |||||||||||||
1960 | 47.68 | 51.55 | 67.61 | 72.59 | a | 79.68 | 93.43 | 96.16 | 92.45 | 89.07 | 70.74 | 64.07 | 55.16 | 73.35 | ||||||||||||
1961 | 59.13 | 60.82 | 60.94 | 72.40 | 80.06 | 94.30 | 96.55 | 88.90 | 80.77 | 73.61 | 58.27 | 52.42 | 73.18 | |||||||||||||
1962 | 52.29 | 55.86 | 55.87 | 77.07 | 77.23 | 88.80 | 92.00 | 94.23 | 84.23 | 76.32 | 67.37 | 58.84 | 73.34 | |||||||||||||
1963 | 52.13 | 64.32 | 62.65 | 68.33 | 83.19 | 86.73 | 95.39 | 84.19 | 84.97 | 77.35 | 61.17 | 59.29 | 73.31 | |||||||||||||
1964 | 51.84 | 54.62 | 57.97 | 66.37 | 79.48 | 87.73 | 92.39 | 87.48 | 81.07 | 79.58 | 58.53 | 52.39 | 70.79 | |||||||||||||
1965 | 55.90 | 56.71 | 57.68 | 66.27 | 74.00 | 82.20 | 91.39 | 90.42 | 79.17 | 79.19 | 63.80 | 50.84 | 70.63 | |||||||||||||
1966 | 50.61 | 51.07 | 66.74 | 74.60 | 82.87 | 87.93 | 92.58 | 88.23 | 82.23 | 72.13 | 66.07 | 54.77 | 72.49 | |||||||||||||
1967 | 56.00 | 63.43 | 67.10 | 66.20 | 78.87 | 85.30 | 91.00 | 89.43 | a | 84.07 | 78.97 | 66.50 | 47.90 | 72.90 | ||||||||||||
1968 | 52.19 | 60.72 | 62.35 | 67.17 | 79.03 | 91.45 | a | 90.13 | a | 84.94 | 85.52 | a | 77.23 | 60.59 | a | 51.06 | 71.87 | |||||||||
1969 | 55.06 | 52.82 | 59.35 | 72.90 | 81.45 | 86.86 | a | 92.55 | 94.03 | a | 86.50 | 70.74 | 62.23 | 56.61 | 72.59 | |||||||||||
1970 | 53.45 | 60.82 | 59.57 | a | 65.17 | 81.83 | b | 89.97 | 94.94 | 90.07 | a | 81.33 | 70.81 | 65.17 | 53.81 | 72.24 | ||||||||||
1971 | 57.32 | 58.29 | 67.65 | 70.50 | 75.73 | a | 89.43 | 95.45 | 87.29 | 84.24 | a | 67.65 | 61.33 | 48.10 | 71.91 | |||||||||||
1972 | 56.35 | 62.93 | 74.42 | 74.23 | 81.16 | 87.60 | 94.33 | a | 89.80 | a | 83.93 | 69.00 | a | 55.93 | 50.94 | 73.39 | ||||||||||
1973 | 48.97 | 53.25 | 50.84 | 65.90 | 80.10 | 90.31 | a | 92.24 | b | 90.77 | ----- | z | 78.33 | a | 62.93 | a | 56.87 | 70.05 | a | |||||||
1974 | 51.58 | 58.48 | a | 64.55 | b | 71.23 | 82.26 | 95.27 | 91.00 | 90.03 | a | 84.00 | 72.60 | a | 61.73 | 51.17 | a | 72.83 | ||||||||
1975 | 53.45 | 54.71 | 57.45 | 62.10 | 77.29 | 87.27 | 90.77 | 92.16 | 85.07 | 75.81 | 64.07 | 55.84 | 71.33 | |||||||||||||
1976 | 56.87 | 58.28 | 60.84 | 68.20 | 78.94 | 89.47 | 89.39 | 89.19 | 80.60 | 70.45 | 64.37 | 56.74 | 71.94 | |||||||||||||
1977 | 51.42 | 62.04 | 59.16 | 72.47 | 74.61 | 90.53 | 92.32 | 90.29 | 84.10 | 75.81 | 65.37 | 57.87 | 73.00 | |||||||||||||
1978 | 51.90 | 53.96 | 63.26 | 68.33 | 78.26 | 91.47 | 94.47 | a | 89.35 | 85.83 | 77.84 | 58.90 | 50.03 | 71.97 | ||||||||||||
1979 | 44.84 | 55.57 | 58.35 | 71.20 | 76.61 | 88.13 | 93.71 | 88.77 | 89.17 | 77.10 | 59.00 | 57.87 | 71.69 | |||||||||||||
1980 | 51.77 | 58.24 | 57.87 | a | 69.87 | 73.52 | 91.10 | 95.19 | 88.45 | 87.03 | 74.81 | 65.97 | 61.77 | 72.97 | ||||||||||||
1981 | 57.03 | 61.89 | 60.65 | 74.73 | 77.90 | 92.20 | 92.06 | 90.81 | 84.83 | 70.29 | 65.70 | 57.77 | 73.82 | |||||||||||||
1982 | 51.76 | j | 56.10 | h | 58.77 | i | 70.19 | d | 77.37 | d | 86.86 | b | 90.96 | c | 88.50 | a | 83.29 | f | 73.00 | b | 58.16 | e | 50.81 | d | 74.48 | d |
1983 | 54.93 | c | 54.25 | d | 56.68 | f | 63.36 | h | 78.52 | b | 86.44 | c | 91.39 | c | 88.48 | b | 87.11 | c | 72.38 | e | 58.78 | c | 51.60 | a | 72.39 | b |
1984 | 55.65 | e | 59.04 | f | 65.77 | e | 70.00 | g | 86.03 | a | 87.28 | e | 89.67 | g | 87.86 | c | 84.27 | d | 66.93 | d | 59.46 | b | 49.76 | f | 74.16 | d |
1985 | 51.04 | h | 54.52 | e | 61.24 | j | 74.30 | 79.11 | c | 92.30 | 93.65 | 91.81 | 78.31 | a | 70.68 | 55.93 | 56.16 | 74.68 | b | |||||||
1986 | 61.13 | 56.46 | 64.03 | 68.47 | 78.65 | 89.13 | 87.77 | 90.03 | 77.97 | 70.45 | 61.40 | 52.37 | a | 71.49 | ||||||||||||
1987 | 51.35 | 53.75 | 59.66 | b | 75.04 | b | 78.06 | 91.86 | a | 91.81 | 89.61 | 85.80 | 78.77 | 60.80 | 49.74 | 72.19 | ||||||||||
1988 | 52.84 | 62.00 | 65.65 | 71.14 | a | 79.52 | 90.03 | 93.29 | 88.29 | 83.73 | 80.16 | 62.93 | a | 54.55 | 73.68 | |||||||||||
1989 | 53.28 | b | 59.37 | a | 69.79 | b | 79.63 | 81.94 | 91.43 | 94.29 | 91.06 | 87.83 | 75.07 | a | 66.50 | 59.10 | 75.77 | |||||||||
1990 | 54.48 | 55.85 | a | 62.90 | 72.31 | a | 77.81 | 92.37 | 89.58 | 87.16 | 84.77 | 77.87 | 64.20 | 51.24 | b | 72.55 | ||||||||||
1991 | 53.90 | 64.11 | 55.20 | a | 69.83 | a | 76.84 | 84.70 | 92.84 | 91.32 | 84.90 | 80.83 | b | 61.28 | a | 51.77 | 72.29 | |||||||||
1992 | 52.77 | 57.07 | 58.81 | 74.63 | 76.32 | 84.50 | 88.94 | 87.19 | 86.30 | 77.74 | 59.07 | 50.03 | a | 71.11 | ||||||||||||
1993 | 51.50 | a | 52.59 | a | 65.97 | a | 73.60 | 82.77 | 90.45 | a | 91.65 | 89.61 | 85.93 | 72.61 | 59.59 | a | 55.81 | 72.67 | ||||||||
1994 | 57.94 | 55.19 | a | 64.42 | 70.50 | 77.84 | 93.47 | 93.90 | 93.87 | 87.20 | 73.71 | 57.10 | 54.84 | 73.33 | ||||||||||||
1995 | 50.97 | a | 63.64 | 63.42 | 67.37 | 74.13 | 88.45 | a | 95.32 | 94.10 | 87.93 | 80.39 | 69.90 | 58.23 | 74.49 | |||||||||||
1996 | 58.52 | 61.90 | 65.52 | 75.67 | 84.71 | 94.03 | 93.65 | 93.48 | 81.07 | 74.58 | 65.63 | 57.06 | 75.48 | |||||||||||||
1997 | 52.69 | b | 56.54 | 67.87 | 66.90 | 81.30 | a | 85.17 | 95.29 | 91.74 | 88.07 | 75.35 | 64.31 | a | 51.35 | 73.05 | ||||||||||
1998 | 56.65 | 49.61 | 59.81 | 64.30 | 76.45 | 86.60 | 93.29 | 93.17 | a | 85.27 | 73.90 | 64.03 | 56.73 | a | 71.65 | |||||||||||
1999 | 59.70 | a | 64.12 | k | 68.19 | 64.03 | 80.10 | 89.80 | 88.19 | 90.52 | 85.00 | 81.00 | a | 72.20 | 58.91 | i | 77.87 | b | ||||||||
2000 | 59.78 | d | 63.25 | e | 62.67 | a | 78.00 | f | 87.74 | d | 93.56 | c | 96.11 | c | 89.93 | b | 90.74 | g | 69.78 | h | 54.96 | e | 55.86 | c | 73.76 | c |
2001 | 52.31 | e | 56.42 | d | 64.11 | c | 69.56 | c | 85.07 | d | 91.54 | f | 90.75 | g | 88.50 | e | 88.18 | b | 78.43 | c | 65.19 | c | 51.63 | d | 69.94 | b |
2002 | 56.19 | d | 60.83 | e | 66.92 | e | 75.42 | f | 82.03 | b | 93.72 | e | 94.44 | d | 92.00 | d | 86.12 | f | 71.77 | e | 63.07 | b | 53.76 | f | 75.66 | c |
2003 | 63.26 | d | 53.40 | h | 60.70 | d | 68.68 | h | 80.85 | d | 89.85 | c | 96.11 | d | 91.07 | d | 85.07 | b | 80.52 | d | 60.56 | e | 54.56 | d | 76.26 | b |
2004 | 53.46 | e | 53.58 | e | 72.77 | e | 69.27 | d | 82.50 | c | 89.11 | c | 89.30 | d | 85.89 | c | 82.36 | e | 71.25 | g | 58.38 | i | 55.59 | d | 73.38 | b |
2005 | 54.07 | d | 53.43 | e | 59.42 | e | 69.60 | e | 80.30 | d | 87.54 | b | 93.89 | d | 85.53 | a | 83.61 | b | 73.75 | c | 66.26 | c | 57.71 | g | 73.40 | a |
2006 | 57.76 | f | 61.33 | d | 55.87 | h | 71.24 | e | 83.59 | d | 93.32 | e | 92.04 | f | 85.96 | c | 80.31 | d | 72.00 | g | 65.95 | h | 54.84 | f | 79.29 | f |
2007 | 50.43 | h | 57.42 | i | 65.38 | e | 72.25 | f | 80.69 | b | 91.76 | e | 93.71 | g | 90.68 | c | 85.12 | e | 76.04 | c | 69.59 | c | 52.06 | n | 79.89 | e |
2008 | ----- | z | 56.06 | m | 64.50 | a | 70.10 | 74.32 | 89.67 | 88.35 | 87.00 | 82.97 | 75.00 | a | 63.62 | a | 50.61 | 74.61 | b | |||||||
2009 | 56.31 | b | 56.11 | 62.90 | b | 68.03 | 80.68 | 79.00 | u | ----- | z | 89.22 | v | 84.52 | a | 72.79 | c | 66.14 | a | 49.10 | 66.28 | c | ||||
2010 | 53.17 | a | 54.04 | a | 60.23 | 67.57 | b | 75.83 | a | 86.90 | 89.03 | 87.84 | 87.87 | 73.65 | 60.37 | 56.65 | 71.09 | |||||||||
2011 | 55.16 | 54.00 | 65.42 | 70.27 | 74.52 | 86.93 | 89.68 | 91.81 | 85.73 | 76.23 | 60.13 | 50.45 | 71.69 | |||||||||||||
2012 | 58.10 | 57.45 | 64.71 | 72.70 | 80.74 | 89.70 | 88.45 | 89.39 | 83.60 | 76.19 | 67.37 | 52.68 | 73.42 | |||||||||||||
2013 | 52.48 | 54.32 | 66.39 | 70.57 | 77.32 | 90.17 | 87.94 | 87.58 | 82.87 | 71.26 | 62.50 | 54.58 | 71.50 | |||||||||||||
2014 | 60.55 | 60.71 | 65.68 | 70.67 | 77.90 | 88.00 | 89.55 | 86.32 | 83.17 | 75.71 | 63.80 | 54.45 | 73.04 | |||||||||||||
2015 | 56.65 | 64.21 | 68.03 | 70.03 | 73.16 | 90.10 | 88.58 | 92.03 | 86.67 | 76.48 | 61.53 | 52.58 | 73.34 | |||||||||||||
2016 | 52.65 | 66.31 | 68.97 | 71.17 | 77.19 | 92.50 | 92.35 | 86.58 | 83.70 | 79.32 | 65.60 | 56.29 | 74.39 | |||||||||||||
2017 | 50.00 | 59.50 | 70.39 | 72.90 | 79.42 | 93.53 | 89.42 | 90.29 | 85.57 | 80.84 | 71.27 | 62.32 | 75.45 | |||||||||||||
2018 | 62.10 | 59.04 | 65.58 | 77.50 | 81.42 | 91.50 | 91.87 | 90.13 | 88.17 | 69.90 | 62.63 | 54.55 | 74.53 | |||||||||||||
2019 | 54.45 | 49.71 | 62.97 | 73.00 | 71.97 | 87.90 | 92.74 | d | 91.45 | 83.60 | 74.45 | 64.40 | 52.23 | 71.57 | ||||||||||||
2020 | 55.81 | 58.75 | a | 60.03 | 70.83 | 83.13 | 88.70 | 92.61 | 94.13 | 88.80 | 80.42 | 66.93 | 56.97 | 74.76 | ||||||||||||
2021 | 55.45 | 58.82 | 61.94 | 73.90 | 80.97 | 93.30 | 89.74 | 88.32 | 84.57 | 73.23 | 70.20 | 55.77 | 73.85 | |||||||||||||
2022 | 57.42 | 58.75 | 65.29 | 74.43 | 81.52 | 89.57 | 91.87 | 88.29 | 87.40 | 74.00 | 58.70 | 52.55 | 73.32 | |||||||||||||
2023 | 48.45 | 53.43 | 55.39 | 72.43 | 78.97 | 84.90 | 97.06 | 91.52 | 85.60 | 76.90 | 64.83 | 57.39 | 72.24 | |||||||||||||
2024 | 51.10 | 56.28 | 57.81 | 69.58 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 55.06 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 54.18 | 57.47 | 62.79 | 70.65 | 79.12 | 89.52 | 92.15 | 89.57 | 84.99 | 75.19 | 63.12 | 54.62 | 72.80 | |||||||||||||
S.D. | 4.14 | 4.14 | 4.67 | 3.50 | 3.29 | 2.74 | 2.49 | 2.41 | 2.77 | 3.84 | 4.06 | 3.69 | 1.32 | |||||||||||||
SKEW | -0.65 | 0.17 | -0.21 | 0.07 | -0.00 | -0.10 | -0.04 | -0.03 | -0.19 | -0.04 | 0.08 | 0.48 | 0.22 | |||||||||||||
MAX | 63.26 | 66.31 | 74.42 | 79.63 | 87.74 | 95.27 | 97.06 | 94.23 | 92.45 | 83.26 | 72.20 | 64.71 | 75.77 | |||||||||||||
MIN | 38.06 | 49.61 | 50.84 | 62.10 | 71.97 | 82.20 | 87.13 | 84.19 | 77.97 | 66.93 | 54.96 | 47.90 | 69.96 | |||||||||||||
YRS | 71 | 70 | 72 | 69 | 75 | 73 | 70 | 75 | 72 | 73 | 74 | 70 | 59 |