YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1930 | 54.94 | o | 68.50 | 65.77 | 79.86 | b | 83.90 | 89.60 | 96.23 | a | 92.07 | a | ----- | z | 71.81 | 58.07 | 52.00 | 75.78 | b | |||||||
1931 | 53.45 | 56.75 | 65.32 | c | 73.20 | 79.58 | 92.33 | ----- | z | 89.32 | ----- | z | 78.90 | 65.63 | 53.43 | a | 70.79 | b | ||||||||
1932 | 55.57 | a | 64.29 | a | 58.32 | l | 78.30 | 81.89 | d | 92.86 | a | 93.35 | 92.65 | 82.53 | 74.65 | 72.87 | 59.39 | 77.12 | a | |||||||
1933 | 64.93 | c | 62.00 | a | 72.81 | d | 74.57 | b | 85.87 | 91.60 | 91.52 | 90.20 | a | 85.93 | 79.55 | 72.76 | a | 75.81 | 78.96 | |||||||
1934 | 66.13 | 69.71 | 69.90 | 82.53 | 89.42 | 98.30 | 96.97 | 94.67 | a | 88.70 | 78.77 | 74.10 | 60.32 | 80.79 | ||||||||||||
1935 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1936 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1937 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1938 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1939 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | 74.58 | 71.24 | a | 61.97 | b | 69.26 | i | |
1943 | 60.88 | e | 67.31 | b | 71.79 | b | 84.50 | 92.83 | y | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 71.12 | h | |
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 | 98.06 | l | 96.16 | 95.45 | 88.10 | 75.71 | 65.17 | 63.90 | 80.75 | f | ||||||
1949 | 43.48 | 63.36 | 73.55 | 74.47 | 88.90 | 94.37 | 96.58 | 93.16 | 85.67 | 75.32 | 73.97 | 57.71 | 76.71 | |||||||||||||
1950 | 64.55 | 67.82 | 72.19 | 79.20 | 88.43 | a | 95.00 | 91.68 | 94.68 | 86.80 | 84.35 | 70.47 | 65.71 | 80.07 | ||||||||||||
1951 | 59.39 | 64.04 | 67.87 | 76.50 | 88.84 | 96.50 | 100.00 | 97.06 | 91.83 | 81.58 | 66.03 | 61.87 | 79.29 | |||||||||||||
1952 | 65.48 | 63.66 | 66.90 | a | 76.00 | 86.74 | 98.07 | 93.00 | 99.48 | 87.37 | 80.03 | 60.83 | 58.81 | 78.03 | ||||||||||||
1953 | 66.94 | 62.25 | 73.81 | 78.37 | 85.32 | 99.57 | 97.35 | 95.16 | 91.77 | 78.58 | 67.27 | 54.32 | 79.23 | |||||||||||||
1954 | 62.52 | 69.61 | 68.84 | 83.17 | 84.13 | 94.77 | 97.87 | 93.16 | 91.70 | 78.68 | 69.30 | 60.61 | 79.53 | |||||||||||||
1955 | 54.55 | 60.04 | a | 71.68 | 82.13 | 88.52 | 96.07 | 93.81 | 92.90 | 89.23 | 79.10 | 65.83 | 63.58 | 78.12 | ||||||||||||
1956 | 61.90 | 59.03 | 74.57 | a | 76.83 | 92.68 | 98.10 | 96.29 | 94.45 | 92.10 | 83.06 | 65.50 | 61.97 | 79.71 | ||||||||||||
1957 | 59.61 | 68.21 | 69.81 | 76.20 | 84.26 | 96.20 | 98.61 | 95.55 | 89.30 | c | 68.60 | f | 57.53 | 62.74 | 78.00 | a | ||||||||||
1958 | 54.16 | 59.39 | 60.74 | 75.87 | 89.35 | 97.50 | 99.03 | 95.77 | 83.90 | 70.52 | 65.90 | 59.23 | 75.95 | |||||||||||||
1959 | 60.52 | 59.75 | 70.68 | 77.83 | 88.77 | 95.77 | 94.65 | 96.55 | 91.83 | 77.58 | 64.57 | 58.65 | 78.09 | |||||||||||||
1960 | 55.35 | 57.31 | 69.06 | 80.40 | 87.29 | 96.93 | 89.61 | 92.35 | 89.30 | 78.61 | 67.00 | 47.84 | 75.92 | |||||||||||||
1961 | 53.71 | 62.79 | 70.17 | a | 80.30 | 89.61 | 93.23 | 93.71 | 93.55 | 87.73 | 80.16 | 57.47 | 58.81 | 76.77 | ||||||||||||
1962 | 52.35 | 68.96 | 65.94 | 79.93 | 93.03 | 93.93 | 94.06 | 97.58 | 85.50 | 78.29 | 66.23 | 56.77 | 77.72 | |||||||||||||
1963 | 53.94 | 63.29 | 72.52 | 82.20 | 88.74 | 94.60 | 98.32 | 92.87 | 87.57 | 82.55 | 67.70 | 52.10 | 78.03 | |||||||||||||
1964 | 56.06 | 56.14 | 70.06 | 81.00 | 89.16 | 95.47 | 97.94 | 96.77 | 84.63 | 79.32 | 65.90 | 59.03 | 77.62 | |||||||||||||
1965 | 61.03 | 57.86 | 62.39 | 81.70 | 86.48 | 96.27 | 100.58 | 93.77 | 88.40 | 79.97 | 71.33 | 59.00 | 78.23 | |||||||||||||
1966 | 50.39 | 57.57 | 72.45 | 77.17 | 86.87 | 92.37 | 99.61 | 89.32 | 86.47 | 74.61 | 68.87 | 54.97 | 75.89 | |||||||||||||
1967 | 57.55 | 61.96 | 78.29 | 85.13 | 87.19 | 93.13 | 95.23 | 91.94 | 85.67 | 81.35 | 65.87 | 53.10 | 78.03 | |||||||||||||
1968 | 55.52 | 58.03 | 65.03 | 76.37 | 87.26 | 96.47 | 91.81 | 92.26 | 87.87 | 81.97 | 64.20 | 59.42 | 76.35 | |||||||||||||
1969 | 63.52 | 62.50 | 60.42 | 80.77 | 88.65 | 93.83 | 97.94 | 97.19 | 86.37 | 72.45 | 62.90 | 59.03 | 77.13 | |||||||||||||
1970 | 57.63 | a | 61.68 | 64.52 | 78.23 | 88.29 | 91.67 | 95.06 | 94.97 | 85.70 | 71.84 | 69.55 | a | 64.16 | 76.94 | |||||||||||
1971 | 61.45 | 62.29 | 75.29 | 77.53 | 86.52 | 95.10 | 94.29 | 84.77 | 83.33 | 74.26 | 66.33 | 56.74 | 76.49 | |||||||||||||
1972 | 58.10 | 64.48 | 72.16 | 80.33 | 82.42 | 92.13 | 92.68 | 87.61 | 83.37 | 74.03 | 57.63 | 54.97 | 74.99 | |||||||||||||
1973 | 48.94 | 55.82 | 67.55 | 74.33 | 83.84 | 93.83 | 92.32 | 94.16 | 85.60 | 81.03 | 70.80 | 62.48 | 75.89 | |||||||||||||
1974 | 58.48 | 64.82 | 78.32 | 77.40 | 89.58 | 95.13 | 94.35 | 87.94 | 76.30 | 71.48 | 62.10 | 52.97 | 75.74 | |||||||||||||
1975 | 59.35 | 62.71 | 67.97 | 76.33 | 86.94 | 97.90 | 90.32 | 93.42 | 83.03 | 81.61 | 68.87 | 61.10 | 77.46 | |||||||||||||
1976 | 56.87 | 71.45 | 69.03 | 79.80 | 83.81 | 95.47 | 89.87 | 94.55 | 82.63 | 72.29 | 57.13 | 56.42 | 75.78 | |||||||||||||
1977 | 52.45 | 63.71 | 69.23 | 78.80 | 88.65 | 97.53 | 97.26 | 98.58 | 94.87 | 77.03 | 70.67 | 65.97 | 79.56 | |||||||||||||
1978 | 52.71 | 56.93 | 74.55 | 87.20 | 90.48 | 96.97 | 98.61 | 92.74 | 80.43 | 74.19 | 60.83 | a | 53.65 | 76.61 | ||||||||||||
1979 | 46.29 | 59.46 | 66.10 | 78.93 | 85.03 | 90.90 | 95.23 | 89.16 | 87.53 | 83.81 | 62.50 | 60.03 | 75.41 | |||||||||||||
1980 | 56.87 | 62.00 | 69.03 | 75.13 | 83.77 | 99.67 | 99.06 | 91.65 | 84.63 | 72.65 | 58.70 | 59.52 | 76.06 | |||||||||||||
1981 | 53.35 | 62.71 | 65.35 | 78.43 | 84.35 | 95.20 | 93.84 | 87.13 | 82.87 | 74.74 | ----- | z | ----- | z | 77.80 | b | ||||||||||
1982 | ----- | z | ----- | z | 73.45 | 78.83 | 84.43 | a | 96.23 | 96.19 | 95.00 | 88.60 | 76.19 | 61.10 | 51.77 | 80.18 | b | |||||||||
1983 | 52.10 | 61.68 | 70.13 | 72.23 | 87.39 | 95.27 | 97.03 | 95.81 | 90.57 | 78.26 | 68.03 | 54.32 | 76.90 | |||||||||||||
1984 | 52.29 | 64.59 | 72.29 | 80.00 | 89.90 | 90.30 | 93.10 | 88.94 | 84.53 | 71.97 | 64.53 | 58.52 | 75.91 | |||||||||||||
1985 | 54.06 | 58.21 | 70.40 | a | 80.33 | 87.84 | 92.83 | 94.77 | 96.10 | 83.63 | 73.16 | 69.10 | 58.90 | 76.61 | ||||||||||||
1986 | 63.19 | 64.57 | 74.97 | 84.43 | 87.03 | 89.83 | 93.16 | 92.10 | 85.80 | 73.48 | 61.47 | 52.55 | 76.88 | |||||||||||||
1987 | 57.10 | 60.18 | 65.55 | 74.70 | 82.84 | 89.67 | 94.94 | 92.87 | 85.73 | 80.77 | 65.93 | 56.68 | 75.58 | |||||||||||||
1988 | 53.10 | 62.97 | 72.73 | a | 78.77 | 86.81 | 93.30 | 92.55 | 91.55 | 88.33 | 80.00 | 72.13 | 57.65 | 77.49 | ||||||||||||
1989 | 60.55 | 59.43 | 75.58 | 83.67 | 92.35 | 94.93 | 96.61 | 94.06 | 86.77 | 81.90 | 69.37 | 54.52 | 79.15 | |||||||||||||
1990 | 62.19 | 65.86 | 69.77 | 79.47 | 87.45 | 102.10 | 90.19 | 89.23 | 85.87 | 79.71 | 68.93 | 59.26 | 78.34 | |||||||||||||
1991 | 53.16 | 64.75 | 72.52 | 82.30 | 91.90 | 95.87 | 90.87 | 91.55 | 80.47 | 80.10 | 62.80 | 56.35 | 76.89 | |||||||||||||
1992 | 53.55 | 64.34 | 72.68 | 80.77 | 81.52 | 92.23 | 96.42 | 94.48 | 91.13 | 82.26 | 63.53 | 59.58 | 77.71 | |||||||||||||
1993 | 57.03 | 61.04 | 71.94 | 81.20 | 89.42 | 97.60 | 98.58 | 96.68 | 88.87 | 77.52 | 63.76 | a | 60.93 | a | 78.71 | |||||||||||
1994 | 58.97 | 66.89 | 73.55 | 81.57 | 88.00 | 102.20 | 99.32 | 96.74 | 89.57 | 78.35 | 67.03 | 61.68 | 80.32 | |||||||||||||
1995 | 58.97 | 68.11 | 69.19 | 79.00 | 86.61 | 94.53 | 99.19 | 96.32 | 86.17 | 81.71 | 70.40 | 59.81 | 79.17 | |||||||||||||
1996 | 61.71 | 66.34 | 69.71 | 80.30 | 97.84 | 97.93 | 96.71 | 91.19 | 84.93 | 79.32 | 67.97 | 64.39 | 79.86 | |||||||||||||
1997 | 55.68 | 56.64 | 73.16 | 73.07 | 85.39 | 95.80 | 97.97 | 96.71 | 91.60 | 78.06 | 64.83 | 53.52 | 76.87 | |||||||||||||
1998 | 64.16 | 63.75 | 69.74 | 77.80 | 95.52 | 102.03 | 101.48 | 94.90 | 94.93 | 80.16 | 69.90 | 59.10 | 81.12 | |||||||||||||
1999 | 65.77 | 72.29 | 71.81 | 80.87 | 88.97 | 94.30 | 95.84 | 98.74 | 88.67 | 81.65 | 74.50 | ----- | z | 83.04 | a | |||||||||||
2000 | 64.29 | 72.03 | 74.03 | ----- | z | 95.65 | ----- | z | ----- | z | 96.19 | e | 92.83 | 74.29 | 56.83 | 53.32 | 75.50 | c | ||||||||
2001 | 53.16 | 63.61 | 65.10 | 82.80 | 90.87 | 98.67 | 100.42 | 95.35 | 90.30 | 81.74 | 66.07 | 58.10 | 78.85 | |||||||||||||
2002 | 61.48 | 59.75 | 69.45 | 84.20 | 90.39 | 98.73 | 95.10 | 96.23 | 88.33 | 72.06 | 62.67 | 56.35 | 77.90 | |||||||||||||
2003 | 61.58 | 61.07 | 71.90 | 82.90 | 90.23 | 93.70 | 96.68 | 95.32 | 87.93 | 80.00 | 67.20 | 60.55 | 79.09 | |||||||||||||
2004 | 58.55 | 57.86 | 71.45 | 74.73 | 89.74 | 94.30 | 93.26 | 90.23 | 84.53 | 75.39 | 59.20 | 56.58 | 75.49 | |||||||||||||
2005 | 59.94 | 58.07 | 67.77 | 78.93 | 85.58 | 98.73 | 97.48 | 91.84 | 92.47 | 76.23 | 73.57 | 61.00 | 78.47 | |||||||||||||
2006 | 66.52 | 64.75 | 71.52 | 85.10 | 93.97 | 97.20 | 97.10 | 90.87 | 81.30 | 76.10 | 70.73 | 58.03 | 79.43 | |||||||||||||
2007 | 49.97 | 63.68 | 73.29 | 76.40 | 80.61 | 93.03 | 91.74 | 94.48 | 88.03 | 82.35 | 67.80 | 60.10 | 76.79 | |||||||||||||
2008 | 56.74 | 69.52 | 73.16 | 81.53 | 89.52 | 99.27 | 91.90 | 91.90 | 83.47 | 79.68 | 69.17 | 62.39 | 79.02 | |||||||||||||
2009 | 64.42 | 70.75 | 75.97 | a | 81.60 | 89.81 | 96.70 | 95.32 | 95.97 | 86.93 | a | 77.29 | 70.17 | 51.32 | 79.69 | |||||||||||
2010 | 56.81 | 58.25 | 70.16 | 78.50 | 88.90 | 99.57 | 88.97 | 95.42 | 88.73 | 81.13 | 70.17 | 64.32 | 78.41 | |||||||||||||
2011 | 61.26 | 63.25 | 80.71 | 87.90 | 89.77 | 103.90 | 100.84 | 101.77 | 89.80 | 82.10 | 69.17 | 49.00 | 81.62 | |||||||||||||
2012 | 64.00 | 62.79 | 78.29 | 86.67 | 88.45 | 100.10 | 94.87 | 97.23 | 89.07 | 78.81 | 72.03 | 62.26 | 81.21 | |||||||||||||
2013 | 55.84 | 64.21 | 74.52 | 81.03 | 89.52 | 99.63 | 92.10 | 96.19 | 87.67 | 79.35 | 64.63 | 56.52 | 78.43 | |||||||||||||
2014 | 61.16 | 65.18 | 72.68 | 79.97 | 88.71 | 100.17 | 96.74 | 94.68 | 81.90 | 79.90 | 64.87 | 58.29 | 78.69 | |||||||||||||
2015 | 54.07 | a | 61.86 | 69.77 | 79.50 | 84.00 | 95.77 | 99.52 | 99.68 | 93.00 | 76.84 | 69.11 | c | 59.73 | a | 78.57 | ||||||||||
2016 | 56.90 | 67.45 | 74.97 | 79.90 | 86.00 | 97.00 | 102.39 | 90.48 | 83.70 | 83.58 | 67.11 | b | 58.68 | 79.01 | ||||||||||||
2017 | 60.55 | 70.25 | 79.71 | 81.97 | 87.77 | 97.90 | 95.94 | 89.87 | 87.63 | 78.16 | 71.20 | 59.39 | 80.03 | |||||||||||||
2018 | 58.19 | 65.11 | 74.58 | 82.10 | 94.94 | 98.90 | 95.74 | 94.94 | 85.90 | 72.87 | 63.23 | 55.32 | 78.49 | |||||||||||||
2019 | 59.00 | 65.04 | 66.55 | 80.97 | 85.52 | 93.90 | 97.19 | 99.81 | 91.57 | 74.58 | 64.60 | 58.90 | a | 78.13 | ||||||||||||
2020 | 60.71 | 60.62 | 70.00 | 80.10 | 92.00 | 97.70 | 101.10 | 99.68 | 86.77 | 81.03 | 71.17 | 59.68 | 80.05 | |||||||||||||
2021 | 56.26 | 58.89 | 71.29 | 74.80 | 86.65 | 95.20 | 91.13 | 91.26 | 90.80 | 82.74 | 70.43 | 69.68 | 78.26 | |||||||||||||
2022 | 58.00 | 57.81 | b | 71.97 | b | 83.63 | 93.47 | a | 97.07 | 99.29 | 91.87 | 88.60 | 75.16 | 60.87 | 59.06 | 78.07 | ||||||||||
2023 | 59.48 | 61.75 | 71.52 | 79.40 | 87.29 | 99.97 | 101.39 | 98.19 | 93.67 | 78.97 | 65.53 | 61.84 | 79.92 | |||||||||||||
2024 | 56.35 | 66.72 | 71.16 | 78.94 | m | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 64.75 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 57.93 | 63.11 | 70.89 | 79.64 | 87.94 | 95.93 | 95.77 | 93.94 | 87.31 | 77.97 | 66.45 | 58.62 | 78.03 | |||||||||||||
S.D. | 4.78 | 4.08 | 3.95 | 3.32 | 3.46 | 3.05 | 3.19 | 3.25 | 3.56 | 3.52 | 4.43 | 4.43 | 1.58 | |||||||||||||
SKEW | -0.32 | 0.28 | -0.19 | 0.07 | 0.23 | 0.11 | -0.10 | -0.22 | -0.20 | -0.31 | -0.38 | 0.51 | 0.09 | |||||||||||||
MAX | 66.94 | 72.29 | 80.71 | 87.90 | 97.84 | 103.90 | 102.39 | 101.77 | 94.93 | 84.35 | 74.50 | 75.81 | 81.62 | |||||||||||||
MIN | 43.48 | 55.82 | 60.42 | 72.23 | 79.58 | 89.60 | 88.97 | 84.77 | 76.30 | 70.52 | 56.83 | 47.84 | 74.99 | |||||||||||||
YRS | 80 | 81 | 81 | 80 | 80 | 79 | 79 | 81 | 79 | 81 | 81 | 80 | 72 |