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 | 89.08 | f | ----- | z | 94.71 | g | ----- | z | 65.19 | 54.80 | 44.26 | 54.75 | i | |||
1940 | 27.65 | 35.59 | 56.97 | 64.71 | b | 80.90 | 90.23 | 95.32 | 94.48 | 79.30 | 66.55 | 41.73 | 31.83 | a | 63.77 | |||||||||||
1941 | 25.40 | a | 35.89 | 53.16 | 58.87 | 76.68 | 81.27 | 90.16 | 86.84 | 74.27 | 61.10 | 49.27 | 36.13 | 60.75 | ||||||||||||
1942 | 28.53 | a | 35.11 | 46.74 | 64.53 | 71.57 | a | 83.97 | 91.81 | 90.35 | 80.20 | 65.48 | 48.33 | 41.16 | 62.32 | |||||||||||
1943 | 39.16 | 45.29 | 51.35 | 71.72 | e | 72.69 | b | 80.13 | 92.52 | 88.68 | 84.14 | a | 68.06 | 50.10 | 35.10 | b | 64.91 | |||||||||
1944 | 19.21 | c | 25.90 | 40.87 | 58.93 | 75.03 | a | 79.23 | 90.47 | a | 89.87 | 82.23 | 69.63 | a | 48.41 | a | 39.83 | a | 59.97 | |||||||
1945 | 40.23 | 44.18 | 52.03 | 58.50 | 76.07 | b | 76.93 | 92.03 | 89.93 | a | 78.61 | b | 67.47 | a | 46.17 | 31.03 | 62.76 | |||||||||
1946 | 30.32 | 39.96 | 57.03 | 69.13 | 70.19 | 87.03 | 93.48 | 91.00 | 84.00 | 57.55 | 40.33 | 35.47 | a | 62.96 | ||||||||||||
1947 | 29.03 | 40.21 | 54.42 | 60.80 | 75.55 | 75.11 | b | 89.58 | 84.61 | 81.54 | b | 67.36 | c | 38.90 | 26.00 | 60.26 | ||||||||||
1948 | 24.86 | c | 30.59 | 42.20 | a | 65.17 | 78.10 | 86.52 | a | 94.00 | 91.88 | e | 85.60 | 68.65 | 44.37 | 32.84 | 62.06 | |||||||||
1949 | 15.06 | 21.57 | 46.06 | 70.13 | 74.67 | a | 83.10 | 92.84 | 92.39 | 84.09 | g | 60.97 | 57.73 | 29.52 | 58.55 | a | ||||||||||
1950 | 17.39 | 28.04 | 47.55 | 65.20 | 72.03 | 84.93 | 89.03 | 90.97 | 78.30 | 73.77 | 51.30 | 36.65 | 61.26 | |||||||||||||
1951 | 31.65 | 45.86 | 51.65 | 65.34 | a | 76.58 | 82.13 | 95.29 | 88.97 | 82.57 | 62.77 | 45.27 | 29.71 | 63.15 | ||||||||||||
1952 | 17.13 | 25.24 | 37.55 | 62.33 | 76.90 | 85.97 | 92.84 | 88.19 | 85.07 | 73.58 | 46.33 | 31.97 | 60.26 | |||||||||||||
1953 | 29.81 | 37.50 | 56.32 | 63.37 | 70.35 | 88.53 | 96.44 | d | 90.74 | 86.63 | 68.26 | 50.07 | 37.06 | 64.59 | ||||||||||||
1954 | 39.03 | 51.43 | 51.67 | a | 71.73 | 80.81 | 86.37 | 97.00 | 91.26 | 81.63 | 68.29 | 55.37 | 28.13 | 66.89 | ||||||||||||
1955 | 22.90 | 26.11 | 45.16 | 65.50 | b | 78.13 | 84.90 | 96.00 | a | 92.77 | 84.76 | a | 70.26 | 44.17 | 41.68 | 62.69 | ||||||||||
1956 | 40.32 | 37.97 | 57.73 | a | 66.48 | a | 79.94 | 90.17 | 92.90 | 89.00 | b | 87.44 | c | 69.77 | 47.72 | a | 28.29 | 65.65 | ||||||||
1957 | 23.68 | 31.07 | 53.00 | 61.13 | 70.48 | 82.73 | 90.42 | 87.16 | 81.33 | 65.83 | a | 44.20 | 41.23 | 61.02 | ||||||||||||
1958 | 38.61 | 50.21 | 50.32 | 58.57 | i | 80.06 | 88.24 | a | 92.22 | h | 93.90 | 82.47 | 71.45 | 51.68 | b | 46.73 | a | 65.37 | b | |||||||
1959 | 39.52 | 41.71 | 54.42 | 67.03 | 74.13 | 88.60 | 93.48 | 89.45 | 77.40 | 66.26 | 53.23 | 37.29 | 65.21 | |||||||||||||
1960 | 24.81 | 29.00 | 52.10 | 67.20 | 75.57 | a | 88.27 | 94.87 | 91.90 | 85.00 | a | 67.26 | 51.50 | 39.39 | 63.90 | |||||||||||
1961 | 42.26 | 49.18 | 54.74 | 65.07 | 78.19 | 90.77 | 94.61 | 90.87 | 72.37 | 64.32 | 43.70 | 32.55 | 64.89 | |||||||||||||
1962 | 26.13 | 37.32 | 46.81 | 70.31 | a | 75.26 | 84.57 | b | 91.06 | 91.45 | 82.79 | a | 71.53 | a | 56.97 | 42.13 | 64.69 | |||||||||
1963 | 29.81 | 52.89 | 54.90 | a | 62.52 | a | 78.97 | 83.03 | 95.13 | 89.50 | e | 83.10 | a | 73.32 | 53.73 | 35.26 | 66.01 | |||||||||
1964 | 37.73 | a | 42.41 | 47.65 | 61.93 | 74.33 | a | 81.14 | a | 95.74 | 87.65 | 81.23 | 71.94 | 40.07 | 25.87 | 62.31 | ||||||||||
1965 | 26.32 | 33.32 | 43.94 | 62.17 | 70.32 | 78.97 | a | 88.87 | 86.48 | d | 71.41 | a | 70.42 | 55.37 | 34.71 | 60.19 | ||||||||||
1966 | 32.42 | 37.29 | 55.06 | 65.47 | 78.19 | 83.37 | 92.35 | 89.65 | 81.93 | 66.26 | 52.77 | 21.87 | 63.05 | |||||||||||||
1967 | 23.90 | 30.93 | 54.71 | 61.77 | 71.61 | 76.63 | 90.48 | 89.52 | 80.43 | 68.90 | 52.60 | 23.42 | 60.41 | |||||||||||||
1968 | 18.06 | 33.66 | 55.19 | 56.60 | 71.10 | 83.62 | a | 90.90 | 81.52 | 77.43 | 65.94 | 46.93 | 31.03 | 59.33 | ||||||||||||
1969 | 32.77 | 34.25 | 42.71 | 65.50 | 80.45 | 78.80 | 91.55 | 92.26 | 81.41 | a | 56.17 | a | 49.27 | 39.10 | 62.02 | |||||||||||
1970 | 27.94 | 48.00 | 49.81 | 58.17 | 75.68 | 81.27 | 89.97 | 91.85 | e | 75.92 | d | 58.82 | c | 49.67 | 37.06 | 62.01 | ||||||||||
1971 | 34.52 | 41.46 | 53.45 | 63.43 | b | 71.16 | 86.00 | c | 92.58 | 92.19 | 75.67 | 62.33 | d | 36.93 | 28.10 | 61.49 | ||||||||||
1972 | 38.65 | 48.10 | 62.16 | 64.57 | 75.03 | 84.00 | 90.39 | 87.97 | 76.23 | 63.18 | c | 43.83 | 22.58 | 63.06 | ||||||||||||
1973 | 13.61 | 23.43 | 43.29 | 58.03 | 74.84 | 82.57 | 88.61 | 88.89 | c | 76.47 | 66.93 | b | 43.50 | 31.06 | 57.60 | |||||||||||
1974 | 17.81 | 27.43 | 55.71 | 60.87 | 78.45 | 87.80 | 90.65 | 88.68 | 80.50 | 65.90 | 50.40 | 34.97 | 61.60 | |||||||||||||
1975 | 31.26 | 36.00 | 50.00 | 57.07 | 67.81 | 78.43 | 90.45 | 88.04 | h | 79.43 | 64.71 | 45.70 | 26.32 | 57.02 | a | |||||||||||
1976 | 27.52 | 38.72 | 47.61 | 62.40 | 74.65 | 82.23 | 92.45 | 86.77 | 79.07 | a | 65.16 | 52.00 | 40.00 | 62.38 | ||||||||||||
1977 | 35.06 | 47.14 | 50.81 | 68.40 | 70.58 | 89.73 | 88.68 | 86.29 | 79.73 | 69.06 | 49.17 | 41.26 | 64.66 | |||||||||||||
1978 | 29.68 | 33.04 | b | 53.16 | 64.22 | c | 70.87 | 85.43 | 92.61 | 87.78 | d | 79.53 | 69.29 | 39.87 | 15.94 | 60.12 | ||||||||||
1979 | 13.55 | 25.86 | 43.23 | a | 55.36 | p | 72.84 | 85.40 | 92.61 | 87.03 | 86.26 | c | 68.42 | 42.63 | 34.48 | 59.30 | a | |||||||||
1980 | 30.39 | 34.66 | 49.52 | 64.37 | 70.45 | 86.17 | 91.77 | a | 87.11 | d | 79.21 | k | 65.29 | 50.77 | 47.19 | 61.61 | a | |||||||||
1981 | 45.55 | 49.64 | 53.90 | 70.30 | 71.68 | 86.69 | a | 92.03 | 89.17 | a | 81.43 | 60.77 | 44.74 | k | 39.94 | 67.37 | a | |||||||||
1982 | 30.52 | 40.32 | 52.73 | e | 60.77 | 71.81 | 81.73 | 90.26 | 89.25 | g | 75.24 | a | 59.36 | f | 43.47 | 32.64 | c | 57.95 | b | |||||||
1983 | 32.55 | 39.93 | 52.52 | 55.55 | a | 69.31 | b | 80.72 | a | 86.96 | e | 89.87 | a | 81.85 | d | 66.94 | 45.46 | b | 24.97 | 60.55 | ||||||
1984 | 13.71 | 22.10 | 43.32 | 59.33 | 77.61 | 80.60 | 90.32 | 88.03 | 78.87 | 59.29 | 48.97 | 27.03 | 57.43 | |||||||||||||
1985 | 18.00 | 23.39 | 46.48 | 68.30 | 75.68 | 85.93 | 90.06 | 90.30 | a | 73.55 | a | 65.30 | a | 45.48 | a | 26.29 | 59.06 | |||||||||
1986 | 28.13 | a | 45.82 | 61.16 | 63.10 | 73.23 | 87.79 | a | 86.65 | 89.48 | 73.36 | b | 63.63 | a | 51.20 | 40.43 | c | 63.67 | ||||||||
1987 | 34.57 | a | 45.33 | a | 51.87 | 70.67 | 75.79 | b | 87.00 | 88.27 | a | 86.55 | b | 81.70 | 70.06 | 49.00 | 34.39 | 64.60 | ||||||||
1988 | 21.58 | 34.00 | 51.43 | a | 67.43 | b | 75.37 | a | 88.62 | a | 93.77 | a | 91.07 | b | 78.27 | 74.21 | b | 49.90 | a | 33.50 | a | 63.26 | ||||
1989 | 24.65 | 28.68 | 57.81 | 71.27 | 77.20 | a | 83.90 | 94.63 | a | 86.93 | a | 80.48 | a | 67.57 | a | 52.83 | a | 40.10 | 63.84 | |||||||
1990 | 39.48 | 35.85 | a | 56.50 | a | 70.67 | 74.40 | a | 87.07 | 90.96 | c | 89.77 | a | 83.72 | a | 66.68 | 48.40 | 26.06 | 64.13 | |||||||
1991 | 21.13 | 38.37 | a | 53.87 | a | 61.96 | c | 74.86 | b | 84.10 | a | 90.72 | b | 88.68 | 79.97 | a | 67.52 | 46.53 | 31.87 | 61.63 | ||||||
1992 | 25.35 | 42.29 | a | 59.48 | 73.07 | 79.00 | a | 84.07 | a | 86.35 | 88.70 | a | 80.55 | a | 70.33 | a | 44.97 | 29.94 | 63.68 | |||||||
1993 | 25.16 | 30.46 | 49.03 | 62.73 | 75.80 | a | 81.13 | 86.90 | 85.87 | a | 79.93 | a | 62.26 | 43.30 | 37.77 | 60.03 | ||||||||||
1994 | 44.58 | 42.07 | 60.23 | 66.83 | 79.93 | a | 89.93 | a | 93.84 | 92.67 | a | 82.20 | 62.84 | 42.83 | 38.16 | 66.34 | ||||||||||
1995 | 37.29 | 51.96 | a | 57.87 | 62.40 | 67.00 | a | 79.79 | a | 89.35 | 90.58 | 80.20 | 66.80 | a | 56.21 | a | 44.84 | 65.36 | ||||||||
1996 | 37.93 | a | 42.29 | a | 57.23 | a | 65.93 | 76.42 | 88.00 | 94.65 | 91.61 | 77.10 | 64.03 | 49.20 | 37.61 | 65.17 | ||||||||||
1997 | 31.55 | 35.18 | 55.55 | 59.45 | a | 77.26 | 85.90 | 89.61 | 87.21 | b | 77.03 | a | 65.43 | a | 47.57 | b | 31.77 | 61.96 | ||||||||
1998 | 40.87 | 43.00 | 55.13 | a | 62.73 | 76.43 | a | 80.60 | 93.90 | 91.06 | 84.36 | b | 66.55 | 51.00 | a | 34.32 | 65.00 | |||||||||
1999 | 39.16 | 47.64 | 62.30 | a | 61.30 | 72.97 | 84.34 | a | 91.94 | 87.42 | 78.59 | c | 72.58 | 57.76 | a | 40.50 | a | 66.38 | ||||||||
2000 | 42.74 | 46.17 | 56.52 | 71.52 | a | 80.29 | 88.50 | 95.16 | 91.93 | a | 80.04 | c | 66.48 | 43.07 | a | 40.53 | a | 66.91 | ||||||||
2001 | 38.03 | 45.00 | 59.94 | 67.10 | a | 80.19 | 90.07 | 94.58 | 93.13 | 87.00 | 69.48 | 53.77 | 27.84 | 67.18 | ||||||||||||
2002 | 31.45 | 40.50 | 52.81 | 70.47 | 78.35 | 91.17 | 97.53 | a | 90.34 | b | 78.40 | 63.39 | 44.80 | 26.77 | a | 63.83 | ||||||||||
2003 | 28.00 | 39.25 | 57.00 | 66.27 | 76.84 | 84.48 | a | 98.03 | 92.42 | 81.79 | a | 73.65 | 45.30 | 36.84 | 64.99 | |||||||||||
2004 | 28.68 | 36.07 | 64.77 | 68.27 | 77.35 | 85.17 | 92.19 | 88.19 | 79.37 | 65.58 | 46.20 | 39.71 | 64.30 | |||||||||||||
2005 | 38.00 | 45.46 | 56.94 | 66.63 | 75.53 | a | 81.17 | 95.53 | a | 87.65 | 79.45 | a | 67.42 | 50.37 | 37.52 | 65.14 | ||||||||||
2006 | 38.58 | 45.14 | 52.68 | 68.67 | 79.71 | 89.30 | 94.39 | 88.74 | 75.83 | 61.58 | 50.43 | 32.42 | 64.79 | |||||||||||||
2007 | 16.97 | 38.22 | j | 59.81 | 67.60 | 75.71 | 88.77 | 94.71 | 90.90 | 79.37 | 65.10 | 53.57 | 19.13 | 64.69 | a | |||||||||||
2008 | 15.26 | 26.03 | 48.16 | 61.66 | a | 72.52 | b | 84.77 | 93.53 | a | 91.07 | a | 79.27 | 66.68 | 52.93 | 31.71 | 60.30 | |||||||||
2009 | 27.26 | 40.00 | 57.42 | 64.07 | 76.52 | 80.00 | 93.13 | 89.84 | 84.00 | a | 62.00 | 51.27 | 17.81 | 61.94 | ||||||||||||
2010 | 22.23 | a | 26.86 | 51.83 | b | 64.10 | 69.10 | 85.30 | 91.29 | 87.35 | 84.20 | 66.90 | 47.27 | 36.40 | a | 61.07 | ||||||||||
2011 | 21.10 | 33.93 | 54.76 | b | 62.93 | 69.00 | 84.03 | 89.63 | a | 91.83 | b | 82.48 | a | 65.03 | 47.20 | 32.45 | b | 61.20 | ||||||||
2012 | 40.53 | a | 45.62 | 63.06 | 70.41 | a | 79.03 | a | 90.34 | a | 91.97 | 91.94 | 82.59 | a | 67.32 | 54.23 | 31.84 | 67.41 | ||||||||
2013 | 13.84 | 27.46 | 52.55 | 61.87 | 73.64 | i | 90.33 | 95.32 | 90.26 | 78.83 | 61.48 | b | 48.52 | c | 15.42 | e | 57.81 | a | ||||||||
2014 | 28.38 | b | 44.64 | c | 57.84 | 64.00 | 75.13 | 86.57 | 94.68 | 86.16 | 82.47 | 69.00 | a | 49.68 | h | 39.31 | e | 66.20 | a | |||||||
2015 | 36.13 | a | 53.46 | 61.41 | d | 70.09 | s | 70.00 | 90.67 | 89.77 | 90.23 | 83.33 | 70.06 | 47.63 | 27.62 | b | 65.48 | a | ||||||||
2016 | 26.41 | b | 40.38 | 58.43 | a | 65.18 | b | 70.48 | 91.86 | b | 92.47 | a | 88.97 | 77.97 | a | 67.15 | d | 53.80 | 35.41 | b | 64.04 | |||||
2017 | 27.40 | a | 40.82 | 60.32 | 63.21 | b | 73.53 | a | 89.52 | g | 94.65 | 90.26 | 78.83 | 63.13 | 55.33 | 43.48 | 62.82 | a | ||||||||
2018 | 40.03 | 46.96 | 55.87 | 67.04 | b | 79.71 | 90.27 | 95.71 | 90.42 | 85.87 | 60.97 | 45.22 | c | 34.19 | 66.02 | |||||||||||
2019 | 26.20 | a | 27.43 | 43.90 | 66.33 | 68.58 | 82.23 | 93.71 | 93.45 | 84.30 | 61.68 | 51.31 | a | 36.19 | 61.28 | |||||||||||
2020 | 26.97 | 36.62 | 56.87 | 65.97 | 79.23 | 86.93 | 94.90 | a | 96.06 | 82.97 | 70.48 | 52.83 | 31.33 | a | 65.10 | |||||||||||
2021 | 28.26 | 41.21 | 54.87 | 72.17 | x | 76.68 | f | 90.53 | 94.48 | 89.03 | 82.23 | 61.19 | 53.40 | 37.94 | 63.32 | b | ||||||||||
2022 | 39.06 | 41.00 | 55.06 | 64.63 | 72.42 | 85.93 | 92.84 | 92.10 | 84.27 | 66.42 | 44.43 | 23.74 | 63.49 | |||||||||||||
2023 | 22.39 | 20.39 | 37.68 | 61.27 | 77.10 | 81.30 | 93.52 | 89.13 | 81.53 | 66.45 | 49.03 | 39.97 | 59.98 | |||||||||||||
2024 | 40.65 | 47.45 | 54.68 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 47.59 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 29.53 | 37.97 | 52.90 | 64.67 | 74.94 | 84.96 | 92.37 | 89.69 | 80.59 | 66.37 | 48.59 | 33.58 | 62.98 | |||||||||||||
S.D. | 8.36 | 8.27 | 5.81 | 3.98 | 3.55 | 3.86 | 2.59 | 2.38 | 3.43 | 3.82 | 4.61 | 6.84 | 2.32 | |||||||||||||
SKEW | -0.12 | -0.24 | -0.54 | -0.01 | -0.23 | -0.28 | -0.20 | -0.28 | -0.37 | -0.18 | -0.16 | -0.49 | -0.17 | |||||||||||||
MAX | 45.55 | 53.46 | 64.77 | 73.07 | 80.90 | 91.86 | 98.03 | 96.06 | 87.44 | 74.21 | 57.76 | 47.19 | 67.41 | |||||||||||||
MIN | 13.55 | 20.39 | 37.55 | 55.55 | 67.00 | 75.11 | 86.35 | 81.52 | 71.41 | 56.17 | 36.93 | 15.42 | 57.43 | |||||||||||||
YRS | 85 | 84 | 85 | 80 | 82 | 83 | 83 | 82 | 82 | 84 | 83 | 85 | 71 |