YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1926 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 86.52 | 78.43 | 69.42 | 57.50 | 42.71 | 66.92 | g | |||||
1927 | 54.48 | h | 48.32 | 52.42 | 65.20 | 76.52 | 80.23 | 85.06 | 81.14 | b | 75.03 | 70.35 | 61.93 | a | 42.74 | 67.18 | a | |||||||||
1928 | 52.16 | 46.10 | 58.10 | 60.31 | a | 70.94 | 82.27 | 87.97 | 80.97 | a | 78.17 | 66.48 | 47.13 | 41.97 | 64.38 | |||||||||||
1929 | 44.68 | 41.92 | b | 53.77 | 65.60 | 70.73 | a | 83.90 | 84.26 | 82.84 | 75.50 | 64.50 | a | 44.93 | b | 52.17 | a | 63.73 | ||||||||
1930 | 36.42 | 57.75 | 54.39 | 72.97 | 70.03 | 84.87 | 86.93 | a | 85.94 | 80.83 | 62.45 | 54.86 | b | 45.55 | 66.08 | |||||||||||
1931 | 46.42 | 49.79 | 52.03 | 60.83 | 69.30 | a | 85.60 | 86.06 | 80.27 | a | 81.86 | a | 69.50 | a | 53.20 | 47.61 | 65.21 | |||||||||
1932 | 43.61 | 55.72 | 53.03 | a | 67.44 | c | 71.97 | a | 75.90 | 77.06 | 70.15 | d | 58.45 | a | 65.13 | a | 58.80 | 40.45 | 61.48 | |||||||
1933 | 49.48 | 49.70 | a | 60.00 | 64.70 | 76.65 | 86.23 | 89.45 | 82.67 | a | 83.17 | 72.67 | a | 61.60 | 59.06 | 69.62 | ||||||||||
1934 | 51.77 | 53.46 | 60.90 | a | 69.10 | 82.71 | 89.77 | 94.68 | 89.13 | 80.07 | 76.42 | 57.67 | 51.55 | 71.44 | ||||||||||||
1935 | 55.77 | a | 54.93 | a | 60.90 | 68.00 | 67.65 | 86.23 | 90.68 | 85.87 | 76.00 | 69.63 | a | 59.00 | 49.35 | 68.67 | ||||||||||
1936 | 48.87 | 53.59 | 58.26 | 66.13 | 73.03 | 79.00 | 79.45 | 81.03 | 69.83 | a | 65.90 | 56.87 | 52.00 | 65.33 | ||||||||||||
1937 | 41.35 | ----- | z | 54.52 | 66.34 | a | 75.39 | 81.40 | 88.58 | 88.94 | 79.47 | 70.23 | 56.37 | 50.16 | 68.43 | a | ||||||||||
1938 | 50.55 | 50.61 | 60.13 | 68.57 | 72.45 | 81.03 | 85.39 | 88.94 | 77.43 | 68.87 | a | 55.24 | a | 48.06 | 67.27 | |||||||||||
1939 | 45.35 | 40.81 | a | 60.81 | 68.38 | a | 74.55 | 86.73 | 85.97 | 82.81 | 80.63 | 68.43 | a | 56.27 | 52.71 | 66.95 | ||||||||||
1940 | 38.17 | a | 47.04 | a | 60.55 | 65.20 | 74.23 | 83.17 | 90.94 | 81.94 | 81.23 | 72.77 | 51.33 | 43.63 | a | 65.85 | ||||||||||
1941 | 43.68 | 51.00 | 50.52 | 60.30 | 72.87 | 76.55 | a | 81.37 | a | 81.61 | 73.27 | 63.97 | 61.17 | a | 48.20 | a | 63.71 | |||||||||
1942 | 53.00 | b | 49.24 | c | 57.90 | 66.44 | c | 77.57 | c | 84.42 | d | 87.71 | 83.24 | b | 74.93 | a | 65.93 | d | 62.76 | a | 53.45 | b | 68.05 | |||
1943 | 49.35 | 57.21 | 60.83 | b | 71.76 | a | 73.55 | 85.27 | 87.55 | 90.74 | 80.13 | 70.16 | 56.67 | 38.58 | 68.48 | |||||||||||
1944 | 40.48 | 49.03 | 56.68 | 60.43 | 71.39 | 82.57 | 86.84 | 85.84 | 79.69 | a | 71.26 | 61.10 | a | 47.80 | a | 66.09 | ||||||||||
1945 | 47.55 | 53.07 | a | 62.87 | 64.00 | 80.16 | 83.34 | a | 89.00 | a | 86.94 | 80.67 | 73.26 | 64.87 | 52.27 | a | 69.83 | |||||||||
1946 | 51.10 | b | 57.93 | a | 62.58 | 75.23 | 73.35 | 86.37 | 90.65 | 84.10 | 80.00 | 71.00 | 55.43 | 58.29 | 70.50 | |||||||||||
1947 | 51.19 | 49.46 | 55.58 | 64.83 | a | 75.06 | 84.40 | 90.06 | ----- | z | 86.03 | a | 74.68 | 51.73 | 46.00 | 66.28 | a | |||||||||
1948 | 43.47 | a | 42.41 | b | 46.52 | 72.17 | a | 74.84 | 83.57 | 91.97 | 87.94 | 84.60 | 70.50 | c | 53.50 | 51.94 | 66.95 | |||||||||
1949 | 35.93 | b | 47.24 | c | 60.00 | d | 59.37 | k | 73.97 | a | 79.43 | 86.35 | 86.26 | 80.24 | a | 69.60 | a | 67.72 | a | 49.77 | a | 66.96 | a | |||
1950 | 55.65 | 60.11 | 61.87 | 71.83 | a | 78.29 | 87.76 | a | 86.05 | k | 84.79 | c | 77.26 | c | 77.48 | b | ----- | z | ----- | z | 72.78 | c | ||||
1951 | ----- | z | 57.74 | i | 57.81 | 68.13 | 76.32 | 82.90 | 91.71 | 88.84 | 83.20 | 70.74 | 56.10 | 48.58 | 72.43 | b | ||||||||||
1952 | 52.65 | 53.21 | 54.81 | 66.83 | 75.55 | 90.77 | 88.74 | 88.45 | 80.07 | 73.03 | 50.90 | 45.94 | 68.41 | |||||||||||||
1953 | 56.35 | 49.04 | 62.13 | 66.97 | 74.35 | 92.90 | 88.71 | 85.58 | 84.60 | 70.23 | 58.90 | 43.90 | a | 69.47 | ||||||||||||
1954 | 50.84 | 62.86 | 57.39 | 75.70 | 72.94 | 87.73 | 91.48 | 87.32 | 82.97 | 70.71 | 61.70 | 54.19 | 71.32 | |||||||||||||
1955 | 46.06 | 48.82 | 58.16 | 68.62 | a | 72.52 | 81.73 | 83.26 | 82.71 | 78.97 | 71.29 | 56.80 | 53.84 | 66.90 | ||||||||||||
1956 | 52.10 | 48.00 | 62.10 | 67.00 | 81.68 | 89.46 | f | 87.94 | 87.29 | 82.80 | 71.84 | 57.40 | 51.87 | 68.18 | a | |||||||||||
1957 | 49.50 | a | 60.61 | 58.26 | 62.27 | 69.68 | 86.80 | 90.90 | 83.29 | 79.92 | q | ----- | z | 46.40 | t | 55.26 | 68.51 | c | ||||||||
1958 | 45.88 | f | ----- | z | ----- | z | 67.00 | w | 75.77 | 85.83 | 89.10 | 86.10 | 77.50 | 67.84 | 60.10 | a | 53.26 | 74.44 | d | |||||||
1959 | 46.53 | a | 50.57 | 59.68 | i | ----- | z | 73.94 | 85.03 | 87.26 | 85.26 | 80.10 | 71.72 | b | 61.67 | 49.71 | 69.18 | b | ||||||||
1960 | 45.48 | 46.79 | 56.43 | a | 70.45 | a | 76.48 | 85.30 | 81.57 | a | 86.52 | 81.14 | a | 70.44 | d | 68.83 | l | 43.96 | d | 67.69 | a | |||||
1961 | 44.26 | d | ----- | z | ----- | z | ----- | z | ----- | z | 85.80 | 88.60 | a | 84.81 | 74.10 | 73.77 | 53.86 | a | 48.65 | 69.23 | d | |||||
1962 | 41.71 | c | ----- | z | ----- | z | 69.93 | 79.29 | 84.13 | 84.87 | a | 89.03 | a | 81.43 | 73.40 | a | 61.30 | ----- | z | 73.90 | c | |||||
1963 | 37.59 | i | 52.39 | 59.61 | 71.72 | a | 77.39 | 84.07 | 91.90 | b | ----- | z | ----- | z | ----- | z | ----- | z | 41.75 | s | 72.85 | f | ||||
1964 | 49.50 | q | ----- | z | ----- | z | ----- | z | ----- | z | 86.23 | 93.45 | 87.52 | 78.10 | 71.84 | 54.43 | 47.42 | 74.14 | e | |||||||
1965 | 50.77 | a | 47.71 | 49.00 | 67.83 | a | 72.70 | a | 78.62 | a | 86.65 | 82.16 | 71.83 | 66.48 | 60.30 | 47.94 | 65.17 | |||||||||
1966 | 36.39 | 41.46 | 57.65 | 63.13 | ----- | z | ----- | z | 90.32 | 79.81 | 76.77 | ----- | z | ----- | z | 41.74 | 60.91 | d | ||||||||
1967 | 43.84 | 44.15 | b | 60.00 | 64.30 | 71.94 | 81.13 | 81.94 | 79.45 | 72.17 | 70.84 | 56.70 | 36.42 | 63.57 | ||||||||||||
1968 | 44.10 | 47.34 | 52.32 | 61.83 | 69.83 | a | 84.00 | 81.84 | 80.39 | 76.23 | 69.87 | 49.33 | 40.10 | 63.10 | ||||||||||||
1969 | 51.90 | 44.43 | 46.94 | 65.97 | 71.19 | 75.73 | 86.65 | 84.74 | 75.93 | 59.10 | 54.34 | a | ----- | z | 65.17 | a | ||||||||||
1970 | ----- | z | ----- | z | ----- | z | ----- | z | 76.42 | 81.07 | 86.74 | 88.90 | a | 79.00 | 62.81 | 57.53 | 54.03 | a | 73.31 | d | ||||||
1971 | 53.23 | 50.68 | 62.06 | 67.20 | 75.19 | 87.43 | 84.48 | 80.32 | 76.70 | 67.65 | 54.90 | 42.68 | 66.88 | |||||||||||||
1972 | 51.19 | 57.41 | 65.87 | 72.70 | 75.26 | 84.97 | 83.06 | 81.61 | 75.27 | 65.94 | 44.17 | 42.61 | 66.67 | |||||||||||||
1973 | 42.13 | 47.79 | 53.97 | 58.70 | 72.84 | 84.30 | 84.71 | 86.81 | 78.30 | 72.32 | 61.47 | 49.13 | 66.04 | |||||||||||||
1974 | 46.42 | 54.93 | 67.10 | a | 68.87 | 84.58 | 88.13 | 88.71 | 81.03 | 73.77 | 67.06 | 55.63 | 45.03 | 68.44 | ||||||||||||
1975 | 45.90 | 47.93 | 58.65 | 63.70 | 75.29 | 84.17 | 85.39 | 87.42 | 75.60 | 71.61 | 57.40 | 52.97 | 67.17 | |||||||||||||
1976 | 48.48 | 58.79 | 58.48 | 68.40 | 73.10 | 86.73 | 84.94 | 86.35 | 77.73 | 63.45 | 53.50 | 49.19 | 67.43 | |||||||||||||
1977 | 42.55 | 54.82 | 57.74 | 65.50 | 75.71 | 88.63 | 88.87 | 84.45 | 81.93 | 73.52 | 59.97 | 54.23 | 68.99 | |||||||||||||
1978 | 42.58 | 44.93 | 61.16 | 71.83 | 74.48 | 84.97 | 91.00 | a | 87.94 | 79.20 | 72.55 | 51.07 | 41.81 | 66.96 | ||||||||||||
1979 | 33.13 | 46.64 | 57.65 | 65.13 | 71.74 | 79.27 | 87.97 | 83.84 | 80.55 | a | 74.00 | a | 50.23 | 51.74 | 65.16 | |||||||||||
1980 | 47.13 | 52.62 | 56.97 | 64.00 | 70.74 | 89.60 | 93.58 | 88.00 | 79.77 | 68.87 | 54.80 | 58.84 | 68.74 | |||||||||||||
1981 | 51.90 | 56.22 | a | 55.84 | 72.17 | 74.16 | 87.77 | 88.87 | 81.35 | 75.70 | 65.61 | 61.23 | 54.00 | 68.74 | ||||||||||||
1982 | 51.16 | 50.39 | 60.00 | 67.70 | 72.71 | 80.10 | 85.32 | 82.10 | 78.07 | 65.50 | a | 53.50 | 42.90 | 65.79 | ||||||||||||
1983 | 48.19 | 46.18 | 55.06 | 61.38 | a | 71.94 | 80.27 | 88.61 | 86.58 | 83.63 | 68.68 | 58.00 | 36.45 | 65.41 | ||||||||||||
1984 | 42.13 | 53.62 | 56.48 | 64.90 | 79.10 | 82.63 | 87.32 | 81.97 | 78.10 | 60.77 | 55.13 | 45.55 | 65.64 | |||||||||||||
1985 | 41.16 | 48.46 | 58.00 | 69.40 | 76.45 | 84.87 | 89.52 | 88.84 | 77.10 | 66.32 | 57.17 | 46.97 | 67.02 | |||||||||||||
1986 | 56.58 | 51.25 | 64.37 | a | 69.80 | 73.26 | 79.03 | 86.61 | 85.23 | 76.47 | 64.39 | 52.33 | 43.42 | 66.89 | ||||||||||||
1987 | 42.52 | 48.46 | 55.84 | 67.53 | 73.87 | 83.23 | 88.94 | 82.55 | 76.80 | 72.26 | 55.40 | 43.87 | 65.94 | |||||||||||||
1988 | 39.77 | 53.86 | 57.52 | f | 68.33 | 74.48 | 83.67 | 84.94 | 83.52 | 77.33 | 72.58 | 59.73 | 47.48 | 67.79 | a | |||||||||||
1989 | 51.52 | 45.14 | 68.61 | 74.57 | 80.97 | 80.67 | 87.45 | 83.19 | 77.03 | 72.35 | 62.43 | 45.84 | 69.15 | |||||||||||||
1990 | 46.68 | 47.29 | 56.58 | 67.60 | 74.52 | 93.83 | 84.87 | 81.13 | 78.93 | 71.13 | 60.37 | 45.68 | 67.38 | |||||||||||||
1991 | 44.87 | 56.79 | 59.81 | 69.57 | 77.94 | 85.33 | 83.03 | 82.90 | 75.37 | 71.58 | 49.97 | 45.97 | 66.93 | |||||||||||||
1992 | 46.71 | 54.72 | 62.03 | 71.60 | 74.39 | 81.73 | 87.90 | 82.94 | 82.53 | 75.06 | 51.10 | 44.10 | a | 67.90 | ||||||||||||
1993 | 45.42 | 48.43 | 59.97 | 68.83 | 76.97 | 84.90 | 89.35 | 81.84 | 80.57 | 69.47 | a | 54.20 | 49.55 | 67.46 | ||||||||||||
1994 | 50.55 | 54.14 | 59.52 | 69.17 | 75.32 | 91.40 | 87.42 | 89.03 | 82.93 | 68.29 | 56.13 | 52.48 | 69.70 | |||||||||||||
1995 | 48.26 | 59.32 | 59.81 | 66.97 | 74.71 | 81.03 | 89.58 | 89.00 | 78.70 | 73.97 | 63.13 | 47.45 | 69.33 | |||||||||||||
1996 | 49.94 | 56.41 | 59.45 | 71.20 | 86.84 | 89.23 | 86.00 | 83.03 | 75.60 | 69.45 | 58.47 | 49.52 | 69.59 | |||||||||||||
1997 | 43.94 | 47.14 | 65.65 | 58.93 | 74.87 | 83.17 | a | 88.16 | 83.87 | 82.07 | 69.84 | 52.63 | 41.48 | 65.98 | ||||||||||||
1998 | 51.48 | 49.82 | 57.16 | 65.57 | 81.03 | 89.93 | 90.87 | 85.55 | 86.17 | 69.35 | 58.73 | 50.16 | 69.65 | |||||||||||||
1999 | 53.94 | 61.14 | 61.29 | 66.00 | 72.80 | a | 84.23 | 90.32 | 87.42 | 79.17 | 74.19 | 65.67 | 50.48 | 70.55 | ||||||||||||
2000 | 54.55 | 62.24 | 61.55 | 74.43 | 85.90 | 87.67 | 90.40 | a | 91.06 | 87.97 | 66.26 | 48.73 | 45.81 | 71.38 | ||||||||||||
2001 | 39.00 | 49.07 | 55.42 | 73.07 | 77.61 | 87.79 | a | 93.61 | 86.71 | 82.63 | 74.77 | 58.83 | 48.90 | 68.95 | ||||||||||||
2002 | 50.52 | 52.14 | 61.61 | 75.60 | 82.97 | 91.70 | 89.58 | 90.45 | 78.93 | 63.71 | c | 54.90 | 47.06 | 69.93 | ||||||||||||
2003 | 54.77 | 50.86 | 62.32 | 71.40 | 81.35 | 81.80 | 93.61 | 89.13 | 81.70 | 75.26 | 57.30 | 53.74 | 71.10 | |||||||||||||
2004 | 51.42 | 48.17 | 65.26 | 64.70 | 82.84 | 88.20 | 85.97 | 83.06 | 79.73 | 69.48 | 52.33 | 51.55 | 68.56 | |||||||||||||
2005 | 52.35 | 51.32 | 55.16 | 68.73 | 73.97 | a | 87.20 | 91.06 | 84.52 | 81.93 | 69.68 | 61.90 | 51.84 | 69.14 | ||||||||||||
2006 | 58.06 | 57.89 | 60.23 | 76.60 | 82.20 | a | 91.53 | 90.94 | 82.77 | 74.27 | 69.23 | 61.23 | 48.19 | 71.10 | ||||||||||||
2007 | 40.23 | 54.64 | 65.77 | 65.87 | 75.23 | 83.47 | 89.26 | 92.32 | 83.13 | 75.29 | 61.60 | 47.23 | 69.50 | |||||||||||||
2008 | 47.65 | 56.38 | 64.35 | 72.00 | 79.42 | 91.63 | 88.23 | 83.19 | 80.17 | 72.19 | 61.47 | 50.03 | 70.56 | |||||||||||||
2009 | 56.32 | 60.48 | a | 66.10 | 70.27 | 80.48 | 87.50 | 90.45 | 88.65 | 79.17 | a | 66.87 | 62.33 | 41.55 | 70.85 | |||||||||||
2010 | 49.26 | 38.07 | 58.32 | 69.30 | 77.23 | 90.57 | 88.06 | 87.94 | 86.53 | 73.10 | 58.57 | 52.61 | 69.13 | |||||||||||||
2011 | 51.48 | 50.54 | 68.00 | 75.17 | 78.87 | 94.70 | 95.13 | 93.10 | 80.63 | 72.71 | 60.40 | 38.39 | 71.59 | |||||||||||||
2012 | 53.10 | 51.86 | 69.71 | 75.63 | 80.55 | 91.13 | 91.74 | 90.03 | 83.60 | 72.10 | ----- | z | ----- | z | 75.95 | b | ||||||||||
2013 | 45.39 | ----- | z | ----- | z | 71.63 | 80.45 | 91.43 | 85.84 | 89.16 | 80.73 | 69.48 | 56.43 | 48.06 | 71.86 | b | ||||||||||
2014 | 52.94 | 55.64 | 63.68 | 69.77 | 77.87 | 86.07 | 87.06 | 87.06 | 79.63 | 73.87 | 57.87 | 49.35 | 70.07 | |||||||||||||
2015 | 47.06 | 54.46 | 63.61 | 70.93 | 72.42 | 85.50 | 89.61 | 89.13 | 86.07 | 70.00 | 59.30 | 49.55 | 69.80 | |||||||||||||
2016 | 48.42 | 59.90 | 66.16 | 69.50 | 76.23 | 89.23 | 95.77 | 84.77 | 82.63 | 79.94 | 61.77 | 50.35 | 72.06 | |||||||||||||
2017 | 51.32 | 62.50 | 70.97 | 70.37 | 75.81 | 89.83 | 92.55 | 83.74 | 80.10 | 72.35 | 67.73 | 55.55 | 72.74 | |||||||||||||
2018 | 54.90 | 58.82 | 66.06 | 72.80 | 85.06 | 92.27 | 91.61 | 89.00 | 84.37 | 68.52 | 56.37 | 50.13 | 72.49 | |||||||||||||
2019 | 49.97 | 55.89 | 59.68 | 71.63 | 74.55 | 87.57 | 92.68 | c | 92.13 | 85.33 | 68.30 | a | 57.70 | 50.00 | 70.45 | |||||||||||
2020 | 49.74 | 51.48 | 63.16 | 72.53 | 82.74 | 92.30 | 93.06 | 92.84 | 81.03 | 71.77 | 59.80 | 49.97 | 71.70 | |||||||||||||
2021 | 48.77 | 47.43 | 60.84 | 67.77 | 76.03 | 90.07 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 65.15 | f | ||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 47.81 | 51.71 | 59.43 | 68.24 | 75.87 | 85.42 | 88.19 | 85.37 | 79.26 | 69.99 | 57.12 | 48.16 | 68.09 | |||||||||||||
S.D. | 5.28 | 5.38 | 4.75 | 4.10 | 4.00 | 4.13 | 3.47 | 3.67 | 4.14 | 3.71 | 4.59 | 4.83 | 2.45 | |||||||||||||
SKEW | -0.47 | 0.03 | -0.17 | -0.19 | 0.65 | -0.03 | -0.41 | -0.52 | -1.32 | -0.38 | -0.34 | -0.21 | -0.29 | |||||||||||||
MAX | 58.06 | 62.86 | 70.97 | 76.60 | 86.84 | 94.70 | 95.77 | 93.10 | 87.97 | 79.94 | 67.73 | 59.06 | 72.74 | |||||||||||||
MIN | 33.13 | 38.07 | 46.52 | 58.70 | 67.65 | 75.73 | 77.06 | 70.15 | 58.45 | 59.10 | 44.17 | 36.42 | 61.48 | |||||||||||||
YRS | 89 | 87 | 87 | 89 | 92 | 93 | 93 | 93 | 93 | 92 | 89 | 90 | 73 |