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 | 64.66 | 73.78 | a | 80.15 | 79.29 | 75.17 | 62.00 | 56.28 | 39.79 | b | 66.39 | d | ||||||
1933 | 40.10 | f | 40.32 | c | 51.34 | b | 53.60 | f | 60.43 | c | 74.05 | 82.18 | 79.77 | 75.17 | a | 65.97 | 54.92 | 49.00 | a | 63.32 | b | |||||
1934 | 46.31 | 51.37 | a | 61.12 | c | 64.84 | e | 72.52 | c | 71.55 | a | 83.37 | 79.77 | a | 73.91 | a | 66.68 | 54.05 | a | 48.75 | a | 64.52 | ||||
1935 | 46.41 | b | 48.85 | d | 47.50 | 56.95 | a | 59.53 | 75.75 | 79.92 | 78.44 | 72.86 | a | 59.32 | 46.64 | b | 43.34 | 59.63 | ||||||||
1936 | 42.41 | b | 43.43 | a | 51.53 | a | 60.43 | b | 68.76 | b | 78.35 | 80.87 | a | 78.74 | 70.30 | 61.11 | 51.52 | a | 43.87 | 60.94 | ||||||
1937 | 29.19 | 43.50 | 48.90 | 55.80 | 65.82 | 72.21 | a | 80.67 | a | 81.11 | 76.25 | 66.32 | 55.33 | a | 48.07 | b | 60.26 | |||||||||
1938 | 46.92 | 45.00 | c | 48.45 | 57.46 | c | 65.10 | b | 73.68 | 79.03 | b | 79.08 | 76.00 | 62.39 | 48.62 | 47.21 | 60.75 | |||||||||
1939 | 42.43 | b | 36.45 | 51.26 | 59.66 | a | 66.53 | 74.10 | 81.26 | 78.77 | a | 70.33 | a | 60.63 | a | 54.77 | 51.26 | 60.62 | ||||||||
1940 | 45.45 | 45.66 | a | 53.23 | 58.80 | b | 69.37 | 77.18 | 81.20 | a | 80.06 | 73.24 | a | 64.02 | 50.43 | 48.90 | 62.30 | |||||||||
1941 | 44.66 | 48.80 | 49.93 | a | 50.95 | a | 65.07 | a | 71.43 | 78.44 | 75.60 | 69.14 | a | 57.18 | 54.18 | 45.03 | 59.20 | |||||||||
1942 | 42.19 | b | 39.96 | a | 48.60 | f | 55.83 | 63.67 | b | 72.40 | 82.31 | 77.31 | 72.90 | 61.42 | 54.42 | 47.60 | a | 60.91 | a | |||||||
1943 | 45.76 | 52.25 | 53.34 | 61.25 | 68.34 | 74.16 | k | 81.16 | 77.98 | 75.35 | 63.03 | a | 54.62 | 45.47 | 61.69 | a | ||||||||||
1944 | 43.43 | a | 42.93 | 48.00 | a | 54.12 | 63.71 | 69.65 | 77.82 | a | 80.24 | 72.33 | a | 64.56 | 49.12 | 47.23 | 59.43 | |||||||||
1945 | 44.76 | 46.29 | 46.40 | 56.00 | 63.19 | 71.07 | 81.00 | 79.56 | 74.97 | 63.34 | 52.37 | 43.39 | 60.19 | |||||||||||||
1946 | 42.77 | a | 44.27 | 50.81 | 62.67 | a | 64.42 | 76.03 | 79.95 | 78.76 | 73.43 | 58.03 | a | 48.62 | 49.21 | 60.75 | ||||||||||
1947 | 41.71 | 50.88 | 51.15 | 56.28 | 68.05 | 71.72 | a | 80.77 | 76.45 | b | 76.45 | 65.08 | 48.82 | 42.68 | 60.84 | |||||||||||
1948 | 47.37 | 44.40 | 47.91 | t | 58.60 | a | 66.30 | a | 73.60 | a | 80.74 | 79.50 | 74.80 | 64.03 | 48.52 | 43.89 | 61.98 | a | ||||||||
1949 | 33.08 | 40.91 | 48.65 | 60.50 | 64.35 | 73.88 | 80.00 | 77.98 | 75.15 | 59.45 | 59.68 | 43.00 | 59.72 | |||||||||||||
1950 | 41.19 | 50.66 | 52.05 | 61.05 | 63.27 | 72.83 | 77.47 | 77.81 | e | 70.43 | 68.52 | a | 57.70 | 52.55 | 62.13 | |||||||||||
1951 | 43.94 | 47.02 | 49.92 | 56.20 | 65.42 | 72.25 | 82.68 | 77.13 | 74.88 | 62.98 | 51.02 | 42.87 | 60.53 | |||||||||||||
1952 | 42.47 | 44.67 | 43.53 | 57.20 | 67.98 | 72.60 | 79.19 | 80.61 | 77.08 | 70.65 | 48.28 | 44.08 | 60.70 | |||||||||||||
1953 | 49.47 | 45.62 | 51.84 | 56.05 | 59.31 | 74.15 | 76.90 | 78.32 | 76.62 | 63.45 | 55.60 | a | 44.29 | 60.97 | ||||||||||||
1954 | 45.35 | 53.38 | 49.81 | g | 61.65 | 67.35 | 73.31 | c | 81.92 | 76.79 | 74.83 | ----- | z | 58.62 | a | 47.05 | 64.03 | b | ||||||||
1955 | 40.08 | 42.23 | 50.95 | 55.22 | 63.37 | e | 72.60 | 75.82 | 77.40 | 74.18 | 67.35 | 53.30 | 48.42 | 60.08 | ||||||||||||
1956 | 48.66 | 41.10 | 53.92 | a | 56.88 | a | 68.13 | 77.85 | 79.52 | 77.00 | 79.25 | b | 62.56 | 52.33 | 46.58 | 61.98 | ||||||||||
1957 | 45.05 | a | 53.93 | 51.79 | c | 55.88 | 61.95 | 76.55 | 82.28 | a | 78.19 | 74.80 | 61.23 | 48.02 | 48.84 | 61.54 | ||||||||||
1958 | 45.21 | 49.04 | 45.06 | 55.58 | 71.00 | 76.21 | a | 81.85 | a | 81.58 | e | 73.37 | 64.63 | 52.23 | 51.82 | 62.30 | ||||||||||
1959 | 47.32 | 44.30 | 53.10 | 62.12 | 63.55 | 78.45 | 82.85 | 75.98 | a | 71.53 | 64.32 | 53.98 | 47.23 | 62.06 | ||||||||||||
1960 | 39.35 | 40.95 | 54.89 | 59.02 | 65.63 | 79.77 | 81.98 | 79.74 | 75.58 | 61.34 | 53.17 | 44.87 | 61.36 | |||||||||||||
1961 | 48.31 | 48.89 | 49.71 | 59.57 | 64.76 | 78.45 | 81.63 | 78.63 | 70.25 | 62.03 | 48.85 | 43.84 | 61.24 | |||||||||||||
1962 | 43.84 | 46.29 | 45.35 | 63.37 | 63.79 | b | 73.62 | 79.58 | 81.60 | 73.48 | 63.65 | a | 57.20 | 48.94 | 61.73 | |||||||||||
1963 | 41.47 | 52.11 | 49.50 | 55.07 | 67.90 | 70.42 | 82.77 | 76.77 | a | 74.83 | 66.61 | 52.72 | 47.73 | 61.49 | ||||||||||||
1964 | 41.34 | 42.29 | 47.00 | a | 55.07 | 64.56 | 72.43 | 81.85 | 76.58 | 72.18 | 68.40 | 47.87 | 43.94 | 59.46 | ||||||||||||
1965 | 47.06 | 45.96 | 47.03 | 54.53 | 61.00 | 67.28 | 80.53 | 78.68 | 68.52 | 67.31 | 54.93 | 44.95 | 59.82 | |||||||||||||
1966 | 41.15 | 41.52 | 52.87 | 59.12 | 67.40 | 73.90 | 81.60 | 79.10 | 73.27 | 62.82 | 53.57 | 44.66 | 60.91 | |||||||||||||
1967 | 44.97 | 48.86 | 52.44 | 50.90 | 64.55 | 71.20 | 81.40 | 79.61 | 73.97 | 66.02 | 56.52 | 37.18 | 60.63 | |||||||||||||
1968 | 43.18 | 52.57 | 51.92 | a | 55.33 | 65.31 | 75.68 | 78.87 | 75.37 | 72.97 | 64.08 | 52.65 | 42.15 | 60.84 | ||||||||||||
1969 | 47.81 | 44.14 | 47.02 | 57.43 | 66.90 | 72.43 | 81.10 | 83.26 | 75.20 | 59.32 | 52.47 | 47.74 | 61.24 | |||||||||||||
1970 | 43.89 | 51.02 | 49.34 | 53.23 | 67.34 | 76.57 | 83.23 | 80.27 | 69.80 | 58.98 | a | 53.50 | 44.66 | 60.99 | ||||||||||||
1971 | 46.21 | 46.39 | 53.13 | 55.93 | 61.48 | 74.13 | 82.53 | 77.76 | 73.77 | 57.85 | 51.33 | 40.76 | 60.11 | |||||||||||||
1972 | 44.35 | 50.14 | 59.42 | 58.05 | 65.69 | 75.28 | 83.37 | a | 77.65 | 73.03 | 57.84 | i | 47.42 | 42.65 | 61.55 | a | ||||||||||
1973 | 41.20 | a | 44.83 | a | 43.45 | a | 53.20 | 66.23 | 74.88 | a | 80.20 | a | 79.06 | 71.87 | 63.55 | 50.35 | 46.87 | 59.64 | ||||||||
1974 | 43.37 | 44.95 | 51.73 | 56.67 | 65.77 | a | 78.30 | j | 79.10 | 77.08 | 72.68 | b | 60.85 | k | 51.63 | 41.42 | 58.44 | b | ||||||||
1975 | 44.52 | f | 44.70 | 46.82 | 49.93 | 64.10 | 73.32 | 80.48 | 78.55 | 70.71 | i | 62.61 | 52.43 | 48.08 | k | 61.44 | c | |||||||||
1976 | 47.16 | 49.06 | e | 49.29 | g | 53.78 | 64.35 | 71.93 | 75.74 | 77.23 | a | 70.70 | 58.89 | d | 53.62 | 45.76 | 60.75 | a | ||||||||
1977 | 43.92 | 50.29 | 46.97 | 58.95 | a | 59.53 | 75.67 | 78.19 | 79.35 | 73.20 | 64.29 | 54.08 | 49.06 | 61.13 | ||||||||||||
1978 | 45.40 | 46.37 | a | 53.68 | 55.00 | 64.41 | b | 76.87 | 81.78 | a | 77.00 | 72.90 | 67.56 | 51.13 | 41.92 | 61.17 | ||||||||||
1979 | 39.18 | 45.12 | 48.61 | 56.80 | 64.18 | 74.93 | a | 80.02 | 76.45 | 76.30 | 65.85 | 48.95 | 49.58 | 60.50 | ||||||||||||
1980 | 45.82 | 49.55 | 47.84 | 56.86 | a | 59.98 | 75.07 | 82.63 | 78.73 | a | 74.40 | 63.74 | 54.75 | 53.26 | 61.89 | |||||||||||
1981 | 49.52 | 50.38 | 49.26 | 60.58 | 64.82 | 78.63 | 81.34 | 80.82 | 74.45 | a | 60.13 | 55.27 | 49.13 | 62.86 | ||||||||||||
1982 | 43.90 | a | 47.71 | b | 48.93 | a | 56.10 | 63.89 | 70.38 | 79.11 | 79.47 | 72.34 | a | 60.55 | 49.98 | 43.23 | 59.63 | |||||||||
1983 | 46.24 | 46.89 | 48.84 | 50.82 | 64.13 | 71.27 | 79.61 | 78.33 | a | 74.82 | 62.40 | 50.43 | 46.08 | 59.99 | ||||||||||||
1984 | 46.87 | 47.17 | 53.39 | d | 56.57 | 71.35 | a | 73.15 | 80.05 | 76.92 | 73.83 | a | 56.97 | 50.28 | 43.69 | 60.85 | ||||||||||
1985 | 42.84 | 44.52 | 50.40 | 61.00 | a | 65.95 | 77.83 | 82.17 | b | 79.69 | 68.30 | b | 62.61 | 49.25 | 47.23 | 60.98 | ||||||||||
1986 | 51.58 | 48.95 | 55.15 | 58.42 | 66.21 | 76.45 | 77.33 | a | 79.55 | 67.13 | 59.66 | 52.27 | 46.16 | 61.57 | ||||||||||||
1987 | 43.47 | 45.82 | 48.55 | 62.09 | a | 65.35 | 76.55 | a | 77.37 | 78.19 | 72.60 | 66.92 | 50.30 | 42.08 | 60.77 | |||||||||||
1988 | 44.23 | 50.34 | 51.27 | 57.32 | 65.24 | b | 76.62 | a | 80.87 | a | 77.92 | 70.52 | 67.69 | 51.03 | 44.10 | 61.43 | ||||||||||
1989 | 44.02 | 47.85 | b | 55.73 | a | 65.33 | a | 67.69 | 75.47 | 82.24 | 76.90 | 74.29 | a | 63.30 | a | 54.38 | 47.63 | 62.90 | ||||||||
1990 | 43.53 | a | 45.00 | 52.91 | b | 60.48 | 64.00 | a | 78.42 | 79.33 | a | 76.53 | 74.55 | a | 64.78 | d | 53.87 | 42.40 | 61.32 | |||||||
1991 | 45.26 | 53.59 | 46.68 | a | 55.33 | 62.35 | 70.38 | a | 80.43 | d | 80.69 | d | 73.68 | b | 66.28 | a | 52.30 | 44.35 | 60.94 | |||||||
1992 | 45.27 | a | 49.62 | a | 50.45 | a | 60.83 | 66.80 | c | 71.92 | 78.37 | 77.60 | 73.50 | 65.23 | 49.25 | 43.30 | a | 61.01 | ||||||||
1993 | 45.89 | 45.93 | 53.27 | 59.00 | 67.56 | 74.07 | a | 77.68 | 77.92 | 73.04 | b | 62.87 | a | 49.31 | a | 45.65 | a | 61.02 | ||||||||
1994 | 47.31 | 45.39 | a | 53.23 | 58.77 | 64.31 | 78.57 | c | 80.35 | a | 82.46 | d | 75.39 | c | 62.21 | c | 46.68 | 47.31 | 61.83 | |||||||
1995 | 44.61 | 52.70 | a | 51.32 | 55.00 | 60.71 | 72.86 | a | 81.13 | a | 82.22 | a | 75.48 | d | 65.59 | b | 58.93 | a | 47.98 | 62.38 | ||||||
1996 | 46.73 | 52.69 | 54.24 | 61.79 | a | 68.27 | 78.12 | 83.95 | b | 81.71 | c | 71.53 | a | 62.67 | e | 55.07 | a | 47.61 | 63.70 | |||||||
1997 | 45.02 | 47.39 | 57.11 | 56.87 | 71.35 | 73.13 | 81.31 | 80.72 | a | 76.82 | b | 61.38 | a | 53.43 | a | 43.66 | b | 62.35 | ||||||||
1998 | 46.74 | 43.22 | a | 49.85 | 52.68 | 60.89 | 70.00 | 81.77 | 81.73 | 73.71 | a | 62.24 | b | 53.14 | a | 46.50 | a | 60.21 | ||||||||
1999 | 48.90 | 50.66 | 52.19 | 52.63 | 65.05 | 74.23 | 78.34 | 79.47 | a | 73.83 | a | 67.23 | a | 58.74 | a | 46.98 | 62.36 | |||||||||
2000 | 48.94 | 50.57 | a | 52.62 | c | 62.57 | a | 71.40 | 78.09 | a | 81.84 | ----- | z | 75.93 | 61.22 | a | 46.54 | c | 48.79 | 61.68 | a | |||||
2001 | 43.54 | d | 44.37 | e | 52.45 | a | 57.07 | b | 71.40 | b | 77.67 | a | 80.53 | 79.62 | b | 77.13 | 66.91 | b | 55.97 | 44.14 | c | 62.57 | ||||
2002 | 46.50 | a | 50.21 | 52.24 | 61.45 | 67.44 | 78.33 | 83.58 | a | 81.24 | 74.52 | c | 61.27 | 55.19 | a | 44.78 | a | 63.06 | ||||||||
2003 | 53.82 | a | 47.31 | b | 51.59 | b | 54.56 | e | 68.04 | e | 76.43 | a | 85.00 | a | 81.85 | d | 76.85 | d | 71.02 | d | 50.92 | e | 46.33 | a | 63.64 | |
2004 | 46.64 | b | 44.16 | a | 59.25 | e | 57.96 | d | 67.80 | d | 75.28 | c | 80.22 | d | 78.11 | c | 73.66 | b | 61.69 | b | 48.65 | c | 46.68 | 61.67 | ||
2005 | 47.48 | b | 47.69 | a | 50.62 | a | 56.96 | c | 68.18 | a | 74.06 | c | 82.98 | e | 78.43 | i | 73.65 | 64.55 | a | 55.62 | a | 48.62 | a | 60.95 | a | |
2006 | 47.58 | a | 50.54 | 48.05 | b | 58.66 | a | 70.50 | a | 79.53 | 83.37 | 78.37 | 71.75 | 62.21 | 55.73 | 45.53 | 62.65 | |||||||||
2007 | 43.54 | c | 48.65 | a | 56.08 | 59.50 | a | 69.19 | 77.58 | 82.66 | 82.00 | b | 74.67 | 64.71 | 59.13 | 42.77 | 63.37 | |||||||||
2008 | 42.58 | 46.79 | 52.27 | 57.85 | 63.73 | a | 77.63 | 80.73 | 80.18 | 74.90 | 66.21 | b | 56.98 | a | 45.85 | 62.14 | ||||||||||
2009 | 49.03 | a | 47.64 | 53.45 | a | 57.28 | 71.32 | 72.93 | c | 83.16 | 80.69 | b | 76.18 | b | 62.02 | a | 57.05 | a | 42.40 | 62.76 | ||||||
2010 | 46.87 | 46.54 | 49.98 | a | 55.36 | b | 63.53 | 74.68 | 82.26 | 79.63 | a | 77.30 | 64.10 | 50.07 | a | 50.95 | b | 61.77 | ||||||||
2011 | 46.02 | 43.52 | 54.13 | 59.65 | 64.00 | 74.93 | 82.10 | 84.41 | d | 77.32 | e | 66.59 | c | 51.20 | b | 44.21 | 62.34 | |||||||||
2012 | 48.27 | 47.38 | 52.13 | 61.73 | 69.65 | a | 77.93 | 81.08 | a | 81.06 | 75.02 | 65.11 | c | 56.81 | a | 44.58 | 63.40 | |||||||||
2013 | 43.61 | 44.64 | 55.81 | 60.68 | 66.95 | a | 78.82 | b | 81.18 | 79.62 | a | 72.40 | 60.11 | 53.63 | 44.79 | 61.85 | ||||||||||
2014 | 50.72 | a | ----- | z | 54.87 | 59.45 | 66.92 | 76.55 | 80.65 | 77.00 | 73.88 | 66.60 | 53.53 | 46.63 | 64.25 | a | ||||||||||
2015 | 49.11 | 53.32 | 57.27 | 57.70 | 62.76 | 78.58 | 79.18 | 81.94 | 76.52 | 65.68 | 49.38 | 43.42 | 62.90 | |||||||||||||
2016 | 44.39 | 53.86 | 56.16 | 59.73 | 64.35 | 79.93 | 82.11 | 77.55 | 72.77 | 67.00 | 55.42 | 46.63 | 63.33 | |||||||||||||
2017 | 43.56 | 49.38 | 56.35 | 59.45 | 66.53 | 79.62 | 80.98 | 79.48 | 72.43 | 66.82 | 59.00 | 50.63 | 63.69 | |||||||||||||
2018 | 51.10 | 47.59 | 53.48 | 63.72 | 67.68 | a | 77.28 | 81.60 | 78.79 | 77.02 | 60.63 | 51.16 | a | 45.68 | 62.98 | |||||||||||
2019 | 46.47 | 41.12 | 51.11 | 60.20 | 60.35 | 74.63 | 81.62 | a | 81.69 | 73.43 | 61.00 | 54.83 | 45.95 | a | 61.04 | |||||||||||
2020 | 46.15 | 47.17 | 49.58 | 57.62 | a | 69.37 | a | 74.97 | 83.18 | 84.45 | a | 77.38 | 67.81 | b | ----- | z | 46.40 | 64.01 | a | |||||||
2021 | 46.07 | b | 48.84 | 50.07 | a | 63.18 | 67.62 | a | 82.30 | 82.60 | 80.74 | 77.07 | 62.03 | 59.60 | 48.71 | 64.07 | ||||||||||
2022 | 47.92 | 48.30 | 54.48 | 63.07 | a | 69.85 | 80.08 | 84.92 | 81.27 | a | 77.60 | 64.23 | a | 48.36 | a | 46.00 | 63.84 | |||||||||
2023 | 42.63 | 44.71 | 47.48 | 59.53 | 65.71 | 71.35 | 86.87 | 83.98 | 75.18 | 67.05 | a | 55.73 | 50.06 | 62.53 | ||||||||||||
2024 | 45.42 | g | 48.41 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 48.41 | k | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 45.02 | 47.05 | 51.34 | 57.91 | 65.72 | 74.98 | 80.95 | 79.22 | 73.93 | 63.62 | 52.83 | 45.92 | 61.53 | |||||||||||||
S.D. | 3.47 | 3.62 | 3.43 | 3.25 | 3.02 | 2.91 | 1.97 | 1.99 | 2.29 | 2.98 | 3.32 | 2.89 | 1.24 | |||||||||||||
SKEW | -1.24 | -0.18 | 0.21 | -0.10 | 0.01 | 0.00 | -0.21 | 0.46 | -0.51 | -0.00 | 0.10 | 0.02 | 0.28 | |||||||||||||
MAX | 53.82 | 53.93 | 61.12 | 65.33 | 72.52 | 82.30 | 86.87 | 84.45 | 79.25 | 71.02 | 59.68 | 53.26 | 64.52 | |||||||||||||
MIN | 29.19 | 36.45 | 43.45 | 49.93 | 59.31 | 67.28 | 75.74 | 75.37 | 67.13 | 56.97 | 46.54 | 37.18 | 59.20 | |||||||||||||
YRS | 89 | 91 | 87 | 90 | 92 | 90 | 92 | 90 | 91 | 89 | 91 | 91 | 78 |