YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
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 | 49.27 | ----- | z | ----- | z | ----- | z | 49.27 | k | |
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 | 45.70 | u | 43.39 | 49.71 | 58.83 | 61.84 | 67.93 | a | 81.23 | 76.77 | 65.60 | 61.30 | a | 51.59 | a | 44.87 | 60.28 | a | ||||||||
1960 | 39.26 | 46.55 | 50.48 | 55.13 | 60.26 | 73.80 | 85.26 | 74.37 | a | 71.57 | 62.52 | 48.90 | 46.13 | 59.52 | ||||||||||||
1961 | 47.65 | 46.29 | 49.71 | 55.10 | 62.68 | 79.13 | 81.52 | 83.42 | 69.63 | 59.48 | 48.60 | 42.48 | 60.47 | |||||||||||||
1962 | 41.87 | 48.63 | a | 47.48 | 60.40 | 58.13 | a | 72.23 | 77.65 | 74.65 | 73.43 | 62.52 | 52.07 | 46.00 | 59.59 | |||||||||||
1963 | 40.47 | a | 53.93 | 50.97 | 51.40 | 66.83 | a | 67.97 | 71.52 | 75.45 | 75.43 | 61.68 | 49.60 | 44.62 | b | 59.16 | ||||||||||
1964 | 42.60 | a | 48.52 | 47.87 | 54.33 | 61.94 | 67.70 | 75.16 | 72.81 | 67.60 | 63.74 | 46.77 | 40.16 | 57.43 | ||||||||||||
1965 | 42.52 | 45.86 | 56.29 | 60.07 | 62.65 | 72.23 | 81.61 | 76.48 | 71.60 | 65.55 | 52.45 | a | 43.06 | 60.86 | ||||||||||||
1966 | 41.16 | 45.46 | 50.58 | 60.38 | a | 70.39 | 70.50 | 75.81 | 78.71 | 74.07 | 62.13 | 51.40 | 45.42 | 60.50 | ||||||||||||
1967 | 44.87 | 48.71 | 46.94 | 53.47 | 67.23 | 76.37 | 82.68 | 89.68 | 80.90 | 61.20 | a | 52.40 | 42.06 | 62.21 | ||||||||||||
1968 | 42.03 | 53.69 | 55.52 | 59.87 | 66.19 | 72.33 | 81.10 | 75.77 | 70.43 | 59.42 | 51.97 | 39.90 | 60.69 | |||||||||||||
1969 | 34.29 | 41.79 | 54.42 | 57.31 | a | 70.68 | 74.43 | 77.58 | 76.13 | 72.33 | 59.87 | 53.33 | 45.03 | 59.77 | ||||||||||||
1970 | 42.03 | a | 53.32 | 54.10 | 52.20 | 67.10 | 77.87 | 82.10 | 80.29 | 67.93 | 60.29 | 50.43 | 40.87 | 60.71 | ||||||||||||
1971 | 41.03 | 45.75 | 46.23 | 55.83 | 66.26 | 64.93 | 78.29 | 81.74 | 69.50 | 58.06 | 47.13 | 39.23 | 57.83 | |||||||||||||
1972 | 39.23 | 44.76 | 51.90 | 51.45 | a | 68.77 | 70.73 | 81.55 | 82.42 | 68.40 | 62.39 | 50.73 | 39.23 | 59.30 | ||||||||||||
1973 | 40.10 | 48.89 | 50.65 | 60.53 | 68.13 | 70.50 | 80.87 | 74.39 | 71.53 | 58.55 | 45.53 | 45.16 | 59.57 | |||||||||||||
1974 | 38.94 | 42.75 | 48.26 | 54.17 | 59.42 | 70.70 | 74.83 | b | 77.77 | 75.67 | 64.03 | 49.63 | 43.47 | a | 58.30 | |||||||||||
1975 | 40.29 | 42.39 | 46.52 | 50.53 | 63.23 | 67.10 | 74.81 | 68.58 | 74.07 | 57.73 | a | 47.70 | 45.23 | 56.51 | ||||||||||||
1976 | 44.16 | 44.79 | a | 47.35 | 56.53 | 66.77 | 67.00 | 73.55 | 69.48 | 70.47 | 61.32 | 52.90 | 43.97 | 58.19 | ||||||||||||
1977 | 41.55 | 47.79 | 44.87 | 60.67 | 57.10 | 71.13 | 73.77 | 79.84 | 64.47 | 59.58 | 43.73 | 41.48 | 57.16 | |||||||||||||
1978 | 40.94 | 44.86 | 54.00 | 53.43 | 58.84 | 71.37 | 75.39 | 73.06 | 62.57 | 63.71 | 44.40 | 37.06 | 56.64 | |||||||||||||
1979 | 31.61 | 39.11 | 52.42 | 53.23 | 64.23 | 71.60 | 76.42 | 72.97 | 72.23 | 61.32 | 46.47 | 42.65 | 57.02 | |||||||||||||
1980 | 36.68 | 42.76 | 45.16 | 58.10 | 64.18 | n | ----- | z | ----- | z | 71.00 | c | 68.89 | c | 62.61 | c | 48.07 | 44.06 | 53.04 | c | ||||||
1981 | 45.94 | 45.78 | a | 52.94 | 52.90 | a | 60.26 | 64.23 | 73.58 | 81.35 | 70.97 | 58.03 | 51.40 | 41.97 | 58.28 | |||||||||||
1982 | 38.00 | b | 42.75 | 48.80 | a | 52.50 | 63.74 | 71.76 | a | 73.63 | a | 75.03 | a | 69.90 | 58.74 | 45.73 | 41.80 | a | 56.87 | |||||||
1983 | 47.00 | 48.32 | 53.77 | a | 60.00 | 70.06 | 67.69 | a | 72.00 | 77.42 | 70.23 | 62.52 | 50.23 | 37.10 | a | 59.70 | ||||||||||
1984 | 45.81 | 48.89 | a | 53.52 | 54.07 | 60.90 | 67.47 | 80.52 | 79.83 | a | 70.57 | 56.19 | 47.33 | 39.52 | 58.72 | |||||||||||
1985 | 42.52 | 43.04 | 50.97 | 58.77 | 65.97 | 72.31 | a | 87.93 | a | 77.35 | 67.47 | 59.10 | 39.60 | 42.74 | 58.98 | |||||||||||
1986 | 48.00 | 46.82 | 58.65 | 55.63 | 65.00 | 76.63 | 72.55 | 86.48 | 68.67 | 67.23 | 51.30 | 44.90 | 61.82 | |||||||||||||
1987 | 42.68 | 51.11 | 52.81 | 63.93 | 69.29 | 76.57 | 76.33 | a | 82.23 | 78.53 | 72.23 | a | 53.77 | 42.06 | 63.46 | |||||||||||
1988 | 42.58 | 50.66 | 53.06 | 59.67 | 63.61 | 71.40 | 80.10 | 80.06 | 74.90 | 67.35 | 48.43 | 45.94 | 61.48 | |||||||||||||
1989 | 42.77 | 40.25 | 47.97 | 63.80 | 65.77 | 75.23 | 74.29 | 75.52 | 80.00 | 62.23 | 52.10 | a | 47.97 | a | 60.66 | |||||||||||
1990 | 45.29 | 42.71 | 56.19 | 63.00 | 63.29 | 70.73 | 83.90 | 81.06 | 77.13 | 59.45 | 50.53 | 38.13 | 60.95 | |||||||||||||
1991 | 43.23 | 55.44 | a | 51.03 | 56.45 | a | 60.84 | 66.90 | 81.45 | 82.37 | a | 79.97 | 67.45 | 49.86 | a | 45.42 | 61.70 | |||||||||
1992 | 47.10 | 54.97 | 63.84 | 62.03 | 76.03 | 79.37 | 81.77 | a | 83.94 | 72.73 | 64.42 | 49.53 | 40.52 | 64.69 | ||||||||||||
1993 | 38.65 | 45.93 | a | 55.48 | 55.43 | 70.19 | 70.32 | b | 69.97 | a | 79.06 | 79.76 | a | 66.83 | b | 47.87 | 45.52 | 60.42 | ||||||||
1994 | 48.84 | 45.26 | a | 57.73 | a | 59.57 | 69.39 | 71.62 | a | 84.79 | c | 80.81 | 78.47 | 61.63 | a | 43.73 | 43.48 | 62.11 | ||||||||
1995 | 47.50 | a | ----- | z | 54.94 | 58.07 | ----- | z | 72.13 | ----- | z | 76.32 | ----- | z | 61.16 | 54.03 | a | ----- | z | 60.59 | e | |||||
1996 | ----- | z | ----- | z | 54.40 | a | 58.67 | 60.90 | 72.80 | 85.30 | a | 81.90 | a | 69.83 | 60.10 | 49.72 | a | 42.48 | 63.61 | b | ||||||
1997 | 43.52 | 49.50 | 50.81 | 57.07 | a | 71.55 | 71.31 | a | 79.00 | 82.16 | 75.07 | 59.21 | c | 54.67 | 44.39 | 61.52 | ||||||||||
1998 | 44.48 | 49.70 | a | 54.06 | 60.63 | 61.52 | 72.97 | 81.03 | a | 83.29 | 79.67 | 62.14 | b | 49.60 | 42.56 | d | 61.80 | |||||||||
1999 | 45.34 | b | 44.75 | 51.07 | b | 61.78 | c | 66.04 | e | 68.28 | a | 79.81 | 79.74 | 77.93 | 64.11 | c | 54.10 | a | 47.27 | a | 61.68 | |||||
2000 | 42.07 | a | 48.59 | 52.96 | c | 65.21 | a | 65.17 | b | 76.00 | a | 80.97 | b | 80.35 | 72.36 | b | 61.60 | a | 48.07 | a | 44.52 | 61.49 | ||||
2001 | 46.37 | a | 47.96 | 54.87 | a | 56.17 | 70.52 | 70.66 | a | 77.53 | a | 78.73 | a | 75.67 | 60.77 | 52.73 | 43.90 | b | 61.32 | |||||||
2002 | 42.73 | a | 48.75 | 49.97 | a | 58.85 | c | 64.45 | b | 74.67 | 82.23 | 81.45 | 77.97 | 63.13 | a | 55.50 | 47.48 | 62.26 | ||||||||
2003 | 49.58 | ----- | z | 51.32 | 56.83 | 65.68 | c | 77.47 | 85.52 | 83.10 | 78.21 | a | ----- | z | 48.57 | b | 44.32 | 64.06 | b | |||||||
2004 | 42.65 | 49.17 | 57.19 | 65.37 | 66.16 | 74.30 | 83.60 | a | 80.81 | 69.97 | a | 63.13 | 52.59 | a | 47.58 | 62.71 | ||||||||||
2005 | 45.67 | a | 55.63 | a | 58.80 | a | 58.80 | 67.58 | 68.64 | b | 80.27 | a | 83.86 | c | 73.59 | a | 61.20 | a | 49.45 | a | 44.10 | 62.30 | ||||
2006 | 45.84 | 47.39 | 49.39 | 61.67 | ----- | z | 75.52 | a | 83.06 | 81.55 | 76.50 | 61.41 | b | 48.97 | a | 45.03 | 61.48 | a | ||||||||
2007 | 43.40 | a | 47.57 | 55.13 | 58.40 | 69.73 | a | 72.00 | 81.00 | 78.77 | 72.31 | a | 58.48 | 49.96 | c | ----- | z | 62.43 | a | |||||||
2008 | 40.19 | 48.82 | a | 49.43 | a | 53.69 | d | 66.42 | 69.07 | a | 81.23 | a | 79.57 | a | 77.07 | a | 63.00 | 54.29 | b | 41.00 | d | 60.32 | ||||
2009 | 42.52 | f | 47.54 | b | 47.29 | c | 59.04 | e | 71.21 | b | 73.64 | b | 87.68 | 81.44 | d | 77.00 | 58.90 | 48.80 | 42.17 | a | 63.16 | a | ||||
2010 | 48.47 | a | 52.15 | a | 55.71 | 56.77 | 61.39 | 69.21 | a | 79.97 | 79.84 | 71.39 | b | 62.84 | 48.53 | 45.58 | 60.99 | |||||||||
2011 | 44.23 | 44.61 | 47.74 | 52.43 | 62.10 | 69.10 | 75.65 | 80.45 | b | 78.21 | a | 60.60 | a | 49.07 | 45.81 | 59.16 | ||||||||||
2012 | 44.74 | 47.90 | 48.26 | 58.30 | g | 66.16 | l | 67.83 | f | 78.05 | j | 83.83 | h | 77.30 | g | 62.24 | b | 52.41 | c | 43.33 | d | 49.81 | f | |||
2013 | 42.46 | e | 47.05 | g | 54.75 | c | 61.88 | n | 67.45 | 75.14 | b | 82.52 | f | 80.65 | 73.33 | 63.90 | b | 51.18 | b | 41.90 | a | 61.20 | c | |||
2014 | 49.28 | f | 45.60 | r | 55.17 | b | 60.38 | a | 69.76 | f | 72.06 | l | 83.55 | 83.66 | b | 78.41 | a | 65.52 | 51.03 | 47.16 | 65.61 | d | ||||
2015 | 50.32 | 57.20 | c | 62.87 | 63.43 | 70.93 | d | 81.88 | f | 85.55 | b | 84.61 | 73.27 | 67.32 | 51.00 | 43.53 | a | 64.55 | a | |||||||
2016 | 45.23 | e | 52.62 | 53.93 | c | 68.80 | 70.56 | d | 76.04 | c | 77.87 | a | 83.90 | 73.10 | 59.37 | a | 55.59 | a | 39.03 | 63.00 | ||||||
2017 | 39.97 | 45.43 | 48.39 | 55.47 | 69.57 | a | 74.03 | a | 84.00 | 87.45 | 76.93 | 62.78 | d | 48.77 | 43.61 | 61.37 | ||||||||||
2018 | 46.74 | 44.39 | 51.35 | 59.48 | a | 73.47 | a | 75.14 | h | 87.73 | e | 83.67 | a | 72.57 | 64.67 | a | 53.50 | 45.29 | 62.08 | a | ||||||
2019 | 47.39 | 40.79 | 53.81 | 59.41 | c | 71.66 | b | 75.23 | 78.60 | a | 81.42 | 71.17 | 57.97 | 54.57 | 46.52 | 61.54 | ||||||||||
2020 | 44.42 | 50.41 | g | 53.35 | 62.97 | 67.29 | 70.93 | 80.61 | 83.74 | 75.96 | b | 64.32 | 50.47 | 47.90 | 63.82 | a | ||||||||||
2021 | 47.13 | 42.46 | 52.65 | 65.43 | b | 68.39 | 82.29 | b | 85.90 | a | 82.61 | 76.17 | a | 59.23 | 52.43 | 42.13 | 63.07 | |||||||||
2022 | 45.77 | 48.57 | 54.77 | 53.24 | a | 61.27 | a | 71.77 | 84.73 | a | 88.26 | 81.67 | 71.68 | 48.50 | 41.68 | 62.66 | ||||||||||
2023 | 45.10 | 44.36 | 48.45 | 55.03 | 73.35 | 77.53 | 85.79 | b | 86.23 | 74.60 | 63.45 | 53.00 | a | 48.34 | b | 62.94 | ||||||||||
2024 | 41.68 | 46.58 | c | 50.64 | i | 55.59 | m | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 44.13 | j | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 43.30 | 47.24 | 52.17 | 58.00 | 65.96 | 72.18 | 79.90 | 79.81 | 73.07 | 62.13 | 50.13 | 43.46 | 60.42 | |||||||||||||
S.D. | 3.59 | 4.01 | 3.92 | 4.03 | 4.25 | 3.72 | 4.46 | 4.38 | 5.17 | 3.15 | 3.07 | 2.70 | 1.96 | |||||||||||||
SKEW | -0.61 | 0.43 | 0.50 | 0.28 | 0.01 | 0.27 | -0.23 | -0.35 | -1.50 | 0.94 | -0.71 | -0.37 | -0.27 | |||||||||||||
MAX | 50.32 | 57.20 | 63.84 | 68.80 | 76.03 | 82.29 | 87.93 | 89.68 | 81.67 | 72.23 | 55.59 | 48.34 | 64.69 | |||||||||||||
MIN | 31.61 | 39.11 | 44.87 | 50.53 | 57.10 | 64.23 | 69.97 | 68.58 | 49.27 | 56.19 | 39.60 | 37.06 | 56.51 | |||||||||||||
YRS | 62 | 60 | 65 | 63 | 60 | 60 | 61 | 64 | 64 | 64 | 65 | 63 | 51 |