YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1925 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1926 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1927 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1928 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1929 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1930 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1931 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1932 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1933 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1934 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | ----- | 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 | 55.38 | q | ----- | z | ----- | z |
1962 | 45.93 | b | 64.71 | 63.10 | 73.23 | 88.35 | 84.90 | 88.90 | 91.74 | 82.43 | 76.35 | 62.70 | 55.55 | 73.16 | ||||||||||||
1963 | 48.55 | 58.86 | 68.61 | 79.13 | 83.42 | 86.03 | 93.00 | 90.52 | 89.08 | q | 81.29 | 67.23 | d | 47.52 | 73.11 | a | ||||||||||
1964 | 54.10 | ----- | z | 64.22 | h | ----- | z | ----- | z | ----- | z | 93.45 | ----- | z | ----- | z | 75.45 | b | 62.17 | 53.10 | 67.65 | g | ||||
1965 | 57.54 | e | 53.81 | b | 51.52 | 74.83 | 81.23 | 85.80 | ----- | z | 88.77 | ----- | z | 73.55 | ----- | z | 58.65 | 69.52 | c | |||||||
1966 | ----- | z | ----- | z | 66.71 | ----- | z | ----- | z | 87.27 | 94.40 | a | 83.81 | 78.23 | 71.58 | 66.90 | 53.13 | 75.25 | d | |||||||
1967 | 57.55 | 56.04 | 70.68 | 75.93 | 78.87 | 86.50 | 87.00 | 87.84 | 79.40 | 76.29 | 60.73 | 49.26 | 72.17 | |||||||||||||
1968 | 49.97 | 50.79 | 59.90 | 68.07 | 75.35 | 85.93 | 88.45 | 87.06 | 81.63 | 75.81 | 57.77 | 52.77 | 69.46 | |||||||||||||
1969 | 55.00 | 52.96 | 49.58 | 72.73 | 78.32 | 86.13 | 95.58 | 92.19 | 78.80 | 64.74 | 61.30 | 53.87 | 70.10 | |||||||||||||
1970 | 47.19 | 56.71 | 55.63 | a | 69.43 | 83.13 | 88.80 | 92.10 | 92.00 | 81.13 | 68.26 | 60.20 | 60.53 | a | 71.26 | |||||||||||
1971 | 54.65 | 53.14 | 63.26 | 71.27 | 80.06 | 88.47 | 91.23 | 82.29 | 79.40 | 72.19 | 61.37 | 51.19 | 70.71 | |||||||||||||
1972 | 53.48 | 58.79 | 70.48 | 78.00 | 77.39 | 86.90 | 86.48 | 85.74 | 82.70 | 73.00 | 49.50 | 47.77 | 70.85 | |||||||||||||
1973 | 42.19 | 51.29 | 59.29 | 63.00 | 76.90 | 87.90 | 89.52 | 89.23 | 79.17 | a | 76.35 | 66.77 | 55.83 | a | 69.79 | |||||||||||
1974 | 49.45 | 61.29 | 67.66 | b | 75.13 | 84.13 | 87.63 | 93.52 | 84.29 | 72.07 | 69.84 | 58.97 | 50.48 | 71.20 | ||||||||||||
1975 | 51.13 | a | 48.21 | 59.90 | 70.43 | 78.74 | 88.30 | 85.55 | 89.35 | 78.80 | 76.61 | 61.83 | 55.71 | 70.38 | ||||||||||||
1976 | 54.45 | 64.83 | 64.00 | 71.47 | 74.68 | 87.70 | 84.32 | 89.65 | 79.47 | 65.42 | 54.93 | 54.26 | 70.43 | |||||||||||||
1977 | 43.61 | 57.96 | 64.71 | 69.30 | 78.67 | a | 92.37 | 92.42 | 90.10 | a | 89.37 | 74.71 | 64.77 | 56.81 | 72.90 | |||||||||||
1978 | 40.97 | 38.82 | 62.19 | 78.67 | 77.19 | 87.83 | 95.77 | 88.29 | 82.10 | 73.42 | 57.20 | 49.65 | 69.34 | |||||||||||||
1979 | 36.42 | 52.54 | 60.32 | 69.10 | 77.45 | 83.87 | 88.84 | 84.90 | 84.27 | 79.19 | 54.83 | 53.00 | 68.73 | |||||||||||||
1980 | 48.61 | 52.10 | 61.10 | 69.87 | 76.16 | 92.77 | 98.13 | 92.42 | 82.77 | 72.87 | 57.23 | 56.74 | 71.73 | |||||||||||||
1981 | 53.61 | 59.07 | 60.42 | 74.67 | 78.48 | 90.93 | 92.90 | 84.97 | 81.77 | 69.87 | 64.03 | 55.00 | 72.14 | |||||||||||||
1982 | 53.00 | 50.96 | 63.42 | 70.50 | 77.06 | 80.83 | 90.32 | 91.13 | 86.30 | 73.52 | 58.53 | 48.19 | 70.31 | |||||||||||||
1983 | 44.32 | 48.54 | 59.71 | 64.97 | 77.74 | 83.73 | 94.23 | 94.77 | 87.47 | 72.52 | 61.10 | 37.35 | 68.87 | |||||||||||||
1984 | 47.26 | 58.38 | 59.58 | 67.73 | 82.19 | 88.40 | 89.77 | 87.81 | 79.83 | 69.00 | 59.43 | 52.45 | 70.15 | |||||||||||||
1985 | 46.03 | 49.21 | 62.74 | 74.43 | 82.58 | 85.17 | 91.10 | 92.29 | 81.80 | 69.00 | 58.87 | 48.10 | 70.11 | |||||||||||||
1986 | 58.68 | 55.36 | 68.06 | 75.13 | 79.97 | 83.60 | 93.77 | 87.71 | 79.53 | 67.10 | 57.53 | 49.68 | 71.34 | |||||||||||||
1987 | 47.61 | 53.68 | 58.65 | 71.73 | 78.10 | 84.83 | a | 87.42 | 88.26 | 81.03 | 74.94 | 61.73 | 47.94 | 69.66 | ||||||||||||
1988 | 43.84 | 54.62 | 62.03 | 70.00 | 77.87 | 86.53 | 86.65 | 88.45 | 81.27 | 73.77 | 65.53 | 54.16 | 70.39 | |||||||||||||
1989 | 57.97 | 45.46 | 68.81 | 77.00 | 80.81 | 82.10 | 91.00 | 87.97 | 78.97 | 77.71 | 65.93 | 46.13 | 71.65 | |||||||||||||
1990 | 56.29 | 58.07 | 60.10 | 70.23 | 78.94 | 94.83 | 88.48 | 89.52 | 85.63 | 75.10 | 65.23 | 50.58 | 72.75 | |||||||||||||
1991 | 46.29 | 62.29 | 66.27 | a | 76.70 | 82.65 | 86.71 | b | 88.48 | 88.06 | 76.37 | 76.03 | 53.00 | 51.52 | 71.20 | |||||||||||
1992 | 48.97 | 60.48 | 67.35 | 72.07 | 74.58 | 82.73 | 89.13 | 85.58 | 84.03 | 77.65 | 56.13 | 49.26 | 70.66 | |||||||||||||
1993 | 44.74 | 51.44 | a | 61.03 | 71.90 | 78.00 | 88.40 | 91.63 | a | 89.42 | 84.03 | 71.45 | 56.93 | 55.26 | 70.35 | |||||||||||
1994 | 52.65 | 52.14 | 65.10 | 71.97 | 74.94 | 93.63 | 92.58 | 90.72 | b | 84.43 | 73.81 | 62.10 | 56.40 | a | 72.54 | |||||||||||
1995 | 54.52 | 61.56 | a | 61.55 | 70.73 | 77.03 | 85.77 | 92.90 | 88.03 | 80.30 | 75.29 | 66.53 | 52.97 | b | 72.26 | |||||||||||
1996 | 53.94 | 60.72 | 61.52 | 74.83 | 88.13 | 89.53 | 88.90 | 85.87 | 78.50 | 72.42 | 60.69 | a | 56.97 | b | 72.67 | |||||||||||
1997 | 47.81 | 51.32 | 68.00 | a | 63.60 | 75.71 | 83.10 | a | 90.23 | a | 87.32 | 84.00 | 72.52 | 57.73 | 47.68 | 69.09 | ||||||||||
1998 | 56.59 | b | 53.36 | 58.42 | 70.12 | d | 86.58 | 94.50 | 96.84 | 89.30 | a | 89.50 | 71.35 | 59.90 | 49.38 | b | 72.99 | |||||||||
1999 | 51.16 | 59.86 | 55.52 | 67.31 | a | 71.33 | d | 85.17 | 92.10 | a | 93.97 | 80.03 | 75.00 | 71.33 | 53.52 | 71.36 | ||||||||||
2000 | 56.84 | 64.68 | a | 66.94 | 72.83 | 85.68 | 81.58 | d | 92.06 | 95.10 | 89.53 | 72.13 | 53.73 | d | 45.19 | 73.02 | ||||||||||
2001 | 44.35 | 55.89 | 56.81 | 76.07 | b | 80.52 | 91.65 | d | 97.89 | c | 92.14 | c | 83.63 | 76.61 | 64.07 | 55.61 | 72.94 | |||||||||
2002 | 54.26 | 55.32 | 62.77 | a | 73.17 | 82.10 | b | 90.24 | a | 90.25 | c | 91.18 | c | 83.50 | 66.55 | 58.11 | c | 51.32 | 71.56 | |||||||
2003 | 54.55 | 51.89 | 65.71 | 76.73 | d | 82.87 | 83.17 | 93.65 | 93.50 | c | 82.13 | 77.71 | 61.43 | 57.67 | a | 73.42 | ||||||||||
2004 | 53.53 | a | 50.86 | 66.23 | 69.47 | 84.90 | 84.63 | 86.74 | 85.06 | 82.24 | a | 72.23 | 53.87 | 53.74 | 70.29 | |||||||||||
2005 | 52.16 | 54.21 | 60.48 | 69.95 | j | 76.23 | 87.50 | 90.93 | d | 87.65 | 88.48 | a | 73.93 | a | 67.37 | 53.65 | 72.05 | a | ||||||||
2006 | 61.87 | 57.96 | 64.35 | 79.27 | 85.10 | 92.59 | a | 95.48 | 90.24 | b | 78.27 | 71.97 | 65.10 | 51.19 | 74.45 | |||||||||||
2007 | 42.74 | 53.04 | 66.94 | 64.23 | 74.48 | 84.25 | b | 87.93 | d | 90.10 | b | 83.33 | 78.10 | 65.92 | e | 50.39 | 70.12 | |||||||||
2008 | 53.13 | a | 58.72 | 65.48 | 72.87 | 81.18 | c | 94.29 | b | 88.70 | d | 88.00 | 79.60 | 72.58 | 64.55 | a | 54.70 | a | 72.82 | |||||||
2009 | 55.00 | 63.79 | 67.39 | 72.07 | 78.81 | 88.23 | 91.52 | b | 90.08 | f | 79.83 | 68.55 | 67.20 | 45.87 | 70.75 | a | ||||||||||
2010 | 48.87 | 44.36 | 61.90 | 71.83 | 78.03 | 91.83 | 86.26 | 92.00 | 87.23 | 76.87 | 63.60 | 55.52 | 71.53 | |||||||||||||
2011 | 51.71 | 53.50 | 68.19 | 79.77 | 84.26 | 99.00 | 99.40 | a | 100.10 | 85.57 | 74.19 | 62.23 | 44.52 | 75.20 | ||||||||||||
2012 | 57.97 | 54.21 | 71.61 | 80.40 | 85.19 | 91.90 | 95.06 | 94.03 | 84.37 | 72.10 | 69.73 | 56.71 | 76.11 | |||||||||||||
2013 | 51.35 | 54.00 | 66.13 | 70.73 | 82.90 | 92.47 | 89.00 | 92.94 | 87.77 | 75.00 | 58.80 | 49.74 | 72.57 | |||||||||||||
2014 | 53.52 | 52.04 | a | 64.52 | 74.93 | 81.87 | 87.63 | 87.65 | 92.42 | 81.43 | 77.84 | 58.10 | 53.10 | 72.09 | ||||||||||||
2015 | 47.90 | 55.14 | 63.03 | 73.73 | 74.45 | 86.10 | 90.23 | 89.68 | 88.50 | 74.55 | 62.53 | 55.03 | 71.74 | |||||||||||||
2016 | 50.52 | 61.29 | a | 69.06 | 72.40 | 77.16 | 88.07 | 95.61 | 89.48 | 82.07 | 79.55 | 67.20 | 51.68 | 73.67 | ||||||||||||
2017 | 51.03 | 64.04 | 70.45 | 71.63 | 79.74 | 89.27 | 93.39 | 85.65 | 82.20 | 73.58 | 66.47 | 54.71 | 73.51 | |||||||||||||
2018 | 53.55 | 56.61 | 68.74 | 72.03 | 89.97 | 94.23 | 95.19 | 91.84 | 81.87 | 67.77 | 56.60 | 51.26 | 73.31 | |||||||||||||
2019 | 53.39 | 56.07 | 59.61 | 72.90 | 75.87 | 86.87 | 94.32 | 96.94 | 89.50 | 67.81 | 57.30 | 56.13 | 72.23 | |||||||||||||
2020 | 55.68 | 52.10 | 65.87 | 71.33 | 83.87 | 92.33 | 97.74 | 96.00 | 82.53 | 75.17 | a | 66.70 | 54.16 | 74.46 | ||||||||||||
2021 | 50.13 | 45.25 | 65.71 | 69.27 | 77.84 | 89.17 | 88.00 | 91.35 | 91.17 | 78.74 | 66.20 | 65.32 | 73.18 | |||||||||||||
2022 | 51.84 | 51.93 | 65.74 | 77.77 | 87.58 | 91.57 | 99.29 | 91.55 | 87.80 | 72.90 | 57.07 | 52.35 | 73.95 | |||||||||||||
2023 | 55.81 | 57.36 | 64.06 | 71.97 | 78.77 | 86.70 | 95.13 | 97.65 | 89.90 | 76.00 | 64.07 | 56.48 | 74.49 | |||||||||||||
2024 | 47.00 | 60.76 | 64.77 | a | 73.29 | m | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 57.51 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 51.04 | 55.15 | 63.54 | 72.42 | 80.04 | 88.05 | 91.62 | 89.93 | 82.86 | 73.51 | 61.42 | 52.49 | 71.77 | |||||||||||||
S.D. | 5.00 | 5.33 | 4.51 | 3.90 | 4.04 | 3.77 | 3.61 | 3.54 | 3.88 | 3.59 | 4.58 | 4.33 | 1.68 | |||||||||||||
SKEW | -0.48 | -0.33 | -0.67 | -0.14 | 0.43 | 0.46 | 0.22 | 0.38 | 0.17 | -0.39 | -0.18 | -0.40 | 0.28 | |||||||||||||
MAX | 61.87 | 64.83 | 71.61 | 80.40 | 89.97 | 99.00 | 99.40 | 100.10 | 91.17 | 81.29 | 71.33 | 65.32 | 76.11 | |||||||||||||
MIN | 36.42 | 38.82 | 49.58 | 63.00 | 71.33 | 80.83 | 84.32 | 82.29 | 72.07 | 64.74 | 49.50 | 37.35 | 68.73 | |||||||||||||
YRS | 62 | 61 | 62 | 59 | 60 | 61 | 61 | 60 | 59 | 62 | 61 | 62 | 56 |