YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
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 | 90.40 | t | 87.61 | 84.19 | d | 84.83 | 71.42 | 54.21 | a | 50.10 | b | 72.06 | f | |||
1957 | 49.06 | 56.15 | b | 55.23 | 63.39 | b | 69.61 | c | 84.27 | 89.30 | a | 83.03 | 78.37 | 62.37 | a | 44.43 | b | 51.19 | d | 65.53 | ||||||
1958 | 40.74 | 52.93 | 45.48 | b | 60.40 | 76.33 | a | 86.80 | 90.13 | 88.61 | 76.41 | a | 63.68 | 56.86 | a | 54.94 | 66.11 | |||||||||
1959 | 45.74 | 49.46 | 56.84 | 66.75 | b | 74.00 | 85.83 | 87.16 | 84.21 | b | 81.97 | 67.65 | 54.23 | 43.97 | 66.48 | |||||||||||
1960 | 33.90 | 41.14 | a | 60.07 | a | 69.30 | 74.94 | 84.67 | 83.16 | 87.39 | 82.10 | 66.68 | 56.97 | 34.74 | 64.59 | |||||||||||
1961 | 35.39 | 46.57 | 55.65 | 63.43 | 77.10 | 84.21 | a | 86.94 | 83.00 | 73.20 | 68.33 | a | 45.03 | a | 42.84 | 63.47 | ||||||||||
1962 | 40.71 | 55.61 | 51.45 | 69.37 | 79.10 | 84.60 | 84.52 | 89.00 | 78.60 | 68.16 | 59.40 | 47.30 | a | 67.32 | ||||||||||||
1963 | 36.70 | a | 46.75 | 57.35 | 68.43 | 79.36 | c | 86.53 | 92.35 | 83.23 | 79.27 | 74.39 | 59.43 | 48.06 | 67.66 | |||||||||||
1964 | 42.03 | 36.14 | 51.81 | 64.40 | 76.65 | 84.03 | 90.16 | 86.29 | 76.70 | 72.47 | a | 54.33 | 46.74 | 65.15 | ||||||||||||
1965 | 48.39 | 47.15 | a | 50.27 | a | 66.40 | 73.61 | 82.23 | 86.81 | 83.48 | 74.93 | 69.94 | 60.97 | 43.97 | b | 65.68 | ||||||||||
1966 | 40.39 | 43.50 | 59.42 | 66.83 | 76.58 | 80.17 | 88.16 | 81.45 | 79.30 | 69.97 | 60.53 | 47.52 | 66.15 | |||||||||||||
1967 | 46.32 | 50.75 | 63.29 | 69.37 | 74.81 | 79.87 | 87.10 | 80.10 | 73.92 | r | 70.84 | 58.73 | 36.42 | 65.24 | a | |||||||||||
1968 | 38.39 | 49.41 | 52.16 | 61.60 | 72.48 | 86.27 | 83.97 | 79.90 | 78.07 | 69.13 | 53.37 | 42.96 | f | 65.89 | a | |||||||||||
1969 | 50.52 | 47.46 | 50.35 | 67.27 | 73.57 | a | 81.10 | 86.74 | 87.16 | 77.13 | 63.68 | 52.93 | 48.58 | 65.54 | ||||||||||||
1970 | 42.26 | 51.50 | h | 49.97 | 63.00 | h | 76.06 | 81.93 | a | 84.55 | 86.87 | 78.33 | 62.74 | 57.37 | 51.61 | 67.17 | b | |||||||||
1971 | 45.13 | 49.04 | c | 58.48 | 65.07 | 74.35 | 86.87 | 86.10 | a | 79.81 | 77.82 | b | 65.42 | 53.33 | 37.45 | 64.91 | ||||||||||
1972 | 45.57 | a | 53.57 | a | 66.84 | 70.13 | 75.06 | 82.93 | 85.77 | 80.84 | 74.40 | 67.26 | 46.03 | a | 43.00 | 65.95 | ||||||||||
1973 | 40.32 | 43.54 | 51.45 | 57.67 | 72.00 | 80.90 | 84.16 | 86.10 | 78.77 | 71.32 | 60.63 | 49.84 | 64.72 | |||||||||||||
1974 | 43.35 | 47.32 | 64.26 | 67.37 | 81.45 | 93.00 | o | 85.65 | 81.23 | 72.30 | 64.58 | 54.67 | 41.90 | 64.01 | a | |||||||||||
1975 | 39.29 | 44.18 | 53.23 | 60.97 | 71.61 | 84.53 | 83.10 | 87.23 | 76.24 | a | 71.55 | 56.40 | 46.84 | 64.60 | ||||||||||||
1976 | 46.74 | 56.66 | 56.97 | 65.70 | 72.10 | 85.20 | 84.42 | 84.32 | 76.72 | a | 63.29 | 51.48 | c | 43.65 | 65.60 | |||||||||||
1977 | 34.77 | 46.21 | 52.48 | 65.43 | 73.90 | 87.30 | 85.47 | a | 85.35 | 79.67 | 71.32 | 59.12 | f | 50.17 | h | 68.19 | b | |||||||||
1978 | 44.20 | a | 46.07 | 60.63 | a | 68.90 | 73.79 | g | 84.33 | 89.45 | 82.48 | 76.80 | 69.74 | 51.80 | 40.60 | a | 65.00 | a | ||||||||
1979 | 34.29 | 46.50 | 55.97 | 64.47 | 70.32 | 78.87 | 87.29 | 83.61 | 79.80 | 70.55 | 49.30 | 48.68 | 64.14 | |||||||||||||
1980 | 44.87 | 50.86 | 56.43 | a | 64.90 | 71.39 | 90.37 | 94.06 | 87.48 | 78.77 | 68.16 | 50.97 | 53.74 | 67.67 | ||||||||||||
1981 | 50.26 | 54.64 | 53.52 | 70.93 | 74.23 | 87.83 | 87.55 | 83.58 | 76.57 | 65.32 | 60.70 | 51.52 | 68.05 | |||||||||||||
1982 | 46.37 | a | 48.07 | 56.42 | 65.43 | 73.42 | 85.00 | 87.94 | 84.58 | 77.10 | 66.29 | 51.63 | 37.74 | 65.00 | ||||||||||||
1983 | 41.55 | 46.41 | a | 55.58 | 60.21 | a | 72.45 | 83.48 | a | 88.55 | 87.03 | 83.13 | 67.87 | 54.10 | 43.61 | 65.33 | ||||||||||
1984 | 41.65 | 53.31 | 56.68 | 64.80 | 80.21 | b | 84.43 | 89.06 | 81.77 | 76.20 | 59.93 | b | 55.18 | h | 41.83 | m | 68.80 | b | ||||||||
1985 | 37.00 | 43.21 | 55.32 | 68.78 | c | 74.35 | 81.31 | a | 86.52 | 86.10 | 77.48 | a | 67.58 | 55.93 | 45.39 | 64.91 | ||||||||||
1986 | 50.81 | 49.43 | 60.58 | 64.46 | b | 62.97 | a | 81.23 | 86.19 | 87.13 | 77.70 | 62.23 | 48.93 | 43.06 | 64.56 | |||||||||||
1987 | 37.35 | 44.21 | 54.29 | 64.27 | 70.26 | 83.67 | 88.32 | 82.23 | 75.93 | a | 73.00 | 56.17 | 41.48 | 64.27 | ||||||||||||
1988 | 41.00 | 52.55 | 58.29 | 64.03 | 75.00 | 82.27 | 85.19 | 79.29 | 75.83 | 71.71 | 55.80 | 41.33 | a | 65.19 | ||||||||||||
1989 | 44.35 | 48.89 | 65.17 | a | 72.23 | 79.16 | 84.69 | a | 86.68 | 83.65 | 81.83 | a | 68.77 | 58.90 | 45.67 | a | 68.33 | |||||||||
1990 | 43.55 | 46.11 | 55.00 | 64.73 | 71.58 | 93.03 | 87.35 | 81.70 | a | 77.47 | 69.58 | 56.87 | 41.61 | 65.72 | ||||||||||||
1991 | 42.16 | 54.07 | 56.39 | 67.37 | 77.13 | 83.60 | 81.84 | 82.00 | 74.00 | 70.00 | 48.30 | 38.94 | 64.65 | |||||||||||||
1992 | 33.39 | 47.41 | 59.68 | 69.43 | 71.23 | 82.13 | 87.06 | 85.87 | 80.63 | 72.32 | 47.70 | 36.48 | 64.45 | |||||||||||||
1993 | 46.77 | a | 51.75 | 61.16 | 69.63 | 76.00 | a | 85.77 | 89.32 | 82.94 | 79.10 | 66.32 | 52.77 | 48.35 | 67.49 | |||||||||||
1994 | 48.90 | 49.18 | 57.45 | 65.40 | 73.97 | 91.97 | 93.74 | 90.77 | 80.93 | 65.84 | 54.30 | 50.13 | 68.55 | |||||||||||||
1995 | 43.65 | 57.64 | 56.81 | 62.80 | 71.94 | 82.64 | b | 86.26 | 90.97 | 80.13 | 74.29 | 62.87 | 51.58 | 68.46 | ||||||||||||
1996 | 48.10 | 54.00 | 59.00 | 67.27 | 84.65 | 87.70 | 86.39 | 82.84 | 74.87 | 64.65 | 57.43 | 48.87 | 67.98 | |||||||||||||
1997 | 36.45 | 47.11 | 62.61 | 59.23 | 74.90 | 81.47 | 87.68 | 84.45 | 82.79 | f | 69.20 | a | 53.93 | 36.90 | 63.09 | a | ||||||||||
1998 | 43.77 | 46.57 | 55.23 | 63.03 | 78.55 | 86.97 | 88.32 | 85.23 | 84.13 | 66.10 | 58.50 | 49.16 | 67.13 | |||||||||||||
1999 | 51.97 | 56.79 | 58.68 | 63.70 | 73.32 | 83.60 | 85.23 | 82.74 | 78.80 | 70.87 | 64.70 | 46.68 | 68.09 | |||||||||||||
2000 | 52.74 | 57.62 | 60.12 | w | ----- | z | 82.90 | a | 85.63 | 91.07 | a | 89.13 | 85.38 | a | 65.41 | b | 47.17 | 45.81 | 70.29 | b | ||||||
2001 | 34.42 | 49.82 | 55.16 | 70.48 | a | 78.19 | 87.33 | 89.77 | 84.42 | 83.41 | c | 72.19 | 56.80 | 47.40 | a | 67.45 | ||||||||||
2002 | 49.87 | 49.39 | 60.26 | 73.90 | a | 79.48 | 91.40 | 86.23 | 87.16 | 79.21 | a | 66.40 | a | 55.60 | 39.26 | 68.18 | ||||||||||
2003 | 55.52 | 50.29 | 59.06 | 69.11 | b | 79.19 | 84.67 | 93.29 | 87.58 | 80.38 | a | 73.52 | 58.03 | a | 50.57 | a | 70.10 | |||||||||
2004 | 48.07 | a | 43.76 | 61.23 | a | 63.03 | a | 78.74 | 87.00 | a | 85.29 | 82.55 | 79.18 | b | 66.06 | 53.73 | h | 46.55 | 67.41 | a | ||||||
2005 | 52.74 | 49.71 | 54.16 | 67.03 | 75.71 | 85.90 | 90.35 | 82.39 | 81.03 | 66.87 | 60.40 | 51.52 | 68.15 | |||||||||||||
2006 | 52.61 | 55.64 | 60.10 | 72.27 | 81.23 | 89.13 | 87.81 | 80.39 | 73.37 | 66.77 | 61.57 | 43.42 | 68.69 | |||||||||||||
2007 | 32.61 | 48.71 | 62.42 | 64.40 | 71.65 | 85.30 | 88.97 | 90.19 | 82.03 | 72.74 | 59.53 | 46.06 | 67.05 | |||||||||||||
2008 | 44.84 | 52.16 | d | 59.74 | 66.97 | a | 75.13 | a | 90.69 | a | 83.65 | 83.24 | b | 77.60 | 68.94 | 59.30 | 48.11 | d | 67.53 | |||||||
2009 | 52.20 | a | 57.61 | 60.58 | 65.83 | 78.16 | 84.14 | a | 89.90 | 87.65 | 76.70 | 65.39 | 60.53 | 40.33 | a | 68.25 | ||||||||||
2010 | 44.06 | 43.71 | 54.55 | 66.77 | 74.32 | 89.13 | 85.26 | 87.42 | 84.57 | 70.29 | 57.07 | 53.61 | 67.56 | |||||||||||||
2011 | 46.52 | 44.32 | 65.55 | 70.93 | 74.23 | 90.10 | 91.77 | 89.29 | 79.63 | 69.48 | 56.53 | 33.19 | 67.63 | |||||||||||||
2012 | 47.35 | 48.79 | 62.84 | 72.07 | a | 76.87 | a | 91.43 | 88.42 | 88.06 | 80.43 | 72.43 | a | 62.77 | 48.00 | 69.96 | ||||||||||
2013 | 44.65 | 48.50 | 61.13 | 67.97 | 76.60 | a | 90.50 | 84.97 | 86.61 | 78.23 | 67.62 | b | 53.50 | 45.45 | 67.14 | |||||||||||
2014 | 50.74 | 56.32 | 60.93 | a | 67.40 | 74.13 | 87.37 | 87.32 | 81.58 | 77.03 | 71.90 | 55.74 | c | 49.61 | 68.34 | |||||||||||
2015 | 42.90 | 52.86 | 63.23 | 66.97 | 70.55 | 85.90 | 87.13 | 87.17 | a | 84.13 | 68.32 | 56.27 | 46.94 | 67.70 | ||||||||||||
2016 | 41.65 | 57.48 | 64.40 | a | 65.70 | 72.79 | b | 87.57 | 93.45 | 83.48 | 78.87 | 75.57 | a | 59.00 | a | 49.13 | 69.09 | |||||||||
2017 | 46.37 | a | 58.14 | 68.32 | 67.63 | 74.68 | 87.43 | 89.00 | 83.71 | 80.90 | 70.81 | 65.43 | 54.06 | 70.54 | ||||||||||||
2018 | 52.19 | 56.81 | a | 60.94 | 71.53 | 81.81 | 91.10 | 89.06 | 86.45 | 81.57 | 65.35 | 53.17 | 46.23 | 69.68 | ||||||||||||
2019 | 42.65 | 50.36 | 58.60 | a | 66.47 | 71.45 | 83.47 | 90.68 | 90.00 | a | 82.70 | 67.77 | 55.67 | 47.45 | 67.27 | |||||||||||
2020 | 49.29 | 47.72 | 60.13 | 68.23 | 81.65 | 89.69 | a | 91.77 | 91.71 | 79.07 | 71.39 | 61.27 | 48.06 | 70.00 | ||||||||||||
2021 | 46.97 | 49.57 | 58.42 | 65.79 | a | 77.16 | 85.80 | 85.16 | 85.61 | 83.60 | 70.26 | 63.57 | 55.42 | 68.94 | ||||||||||||
2022 | 49.83 | a | 46.61 | 58.39 | 70.67 | 81.03 | 84.10 | 90.10 | 81.90 | b | 82.93 | 64.87 | 50.86 | a | 49.37 | a | 67.55 | |||||||||
2023 | 47.74 | 50.18 | 57.13 | 66.13 | 76.48 | 83.93 | 94.26 | 88.71 | 83.30 | 72.81 | 57.47 | 49.13 | a | 68.94 | ||||||||||||
2024 | 47.00 | 53.24 | 56.77 | 66.75 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 52.34 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 44.32 | 49.82 | 57.88 | 66.50 | 75.39 | 85.54 | 87.76 | 84.97 | 79.05 | 68.52 | 55.85 | 45.95 | 66.93 | |||||||||||||
S.D. | 5.53 | 4.68 | 4.39 | 3.33 | 3.77 | 3.22 | 2.81 | 3.05 | 3.06 | 3.36 | 4.72 | 5.10 | 1.78 | |||||||||||||
SKEW | -0.30 | -0.08 | -0.12 | -0.22 | -0.06 | 0.31 | 0.43 | 0.20 | 0.08 | -0.20 | -0.38 | -0.48 | 0.01 | |||||||||||||
MAX | 55.52 | 58.14 | 68.32 | 73.90 | 84.65 | 93.03 | 94.26 | 91.71 | 85.38 | 75.57 | 65.43 | 55.42 | 70.54 | |||||||||||||
MIN | 32.61 | 36.14 | 45.48 | 57.67 | 62.97 | 78.87 | 81.84 | 79.29 | 72.30 | 59.93 | 44.43 | 33.19 | 63.47 | |||||||||||||
YRS | 68 | 67 | 67 | 65 | 66 | 66 | 68 | 68 | 66 | 68 | 65 | 65 | 57 |