YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1919 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 71.00 | i | 52.26 | 35.27 | ----- | z | 43.76 | j | ||
1920 | ----- | z | 25.89 | b | 40.00 | c | 48.70 | 71.34 | b | 77.11 | c | 79.05 | j | 79.48 | b | 76.54 | b | 71.19 | o | ----- | z | ----- | z | 59.87 | e | |
1921 | ----- | z | ----- | z | ----- | z | ----- | z | 73.90 | 86.93 | 90.69 | b | 81.72 | b | 75.03 | a | 62.17 | a | ----- | z | 28.77 | e | 71.32 | e | ||
1922 | 24.81 | d | 22.96 | a | 39.66 | b | 53.17 | 75.74 | 79.55 | a | 79.77 | e | 85.71 | 79.93 | 65.17 | a | 45.12 | f | 26.96 | c | 57.59 | a | ||||
1923 | 24.48 | b | ----- | z | 31.54 | c | 53.89 | b | 71.74 | 84.11 | c | 85.45 | b | 79.04 | c | 74.80 | e | 59.63 | d | 47.54 | d | 38.09 | i | 61.22 | b | |
1924 | 13.85 | e | 31.93 | 37.55 | 52.33 | 61.06 | 75.62 | a | 81.32 | 77.97 | 67.53 | 68.00 | 39.55 | a | 15.30 | a | 51.83 | |||||||||
1925 | 22.11 | c | 28.21 | 44.66 | b | 64.61 | b | 71.10 | b | 79.48 | a | 83.37 | a | 85.74 | 75.90 | 48.10 | 43.86 | b | 26.03 | 56.10 | ||||||
1926 | 26.75 | c | 31.40 | c | 34.53 | a | 56.87 | 75.61 | 75.93 | 84.48 | 79.48 | b | 68.45 | a | 58.37 | a | 35.83 | 24.84 | 54.38 | |||||||
1927 | 21.58 | 32.36 | c | 45.66 | b | 57.82 | b | 65.28 | b | 75.87 | 79.68 | 77.26 | 73.30 | 62.00 | 36.40 | 17.55 | b | 53.73 | ||||||||
1928 | 26.23 | 29.03 | 41.10 | a | 50.83 | a | 74.63 | a | 75.23 | 81.94 | 81.55 | 68.10 | 61.65 | 44.10 | 30.26 | 55.39 | ||||||||||
1929 | 11.39 | 19.11 | 40.77 | 58.80 | 67.23 | 78.60 | 86.00 | 81.90 | 68.83 | 60.65 | 36.10 | a | 25.27 | a | 52.89 | |||||||||||
1930 | 15.55 | 34.50 | 42.00 | 62.43 | b | 70.97 | 80.00 | 86.65 | 88.77 | a | 75.33 | 57.19 | 45.33 | 29.26 | 57.33 | |||||||||||
1931 | 31.16 | 38.93 | 40.77 | a | 62.50 | 68.20 | a | 83.41 | a | 87.93 | b | 81.71 | 79.97 | 64.71 | 49.67 | c | 36.74 | 60.47 | ||||||||
1932 | 27.37 | a | 29.41 | 29.94 | 56.03 | 70.48 | 85.63 | 87.23 | 85.94 | 74.47 | 56.74 | 38.07 | 25.94 | 55.60 | ||||||||||||
1933 | 31.16 | 20.67 | a | 35.10 | 54.20 | 72.68 | 90.30 | 88.97 | 85.50 | a | 81.23 | 56.42 | 36.33 | 22.68 | 56.27 | |||||||||||
1934 | 28.10 | 24.11 | 35.52 | b | 51.63 | 78.87 | a | 82.17 | 87.35 | 81.26 | 66.97 | 59.13 | 44.34 | a | 20.79 | c | 55.02 | |||||||||
1935 | 17.21 | b | 30.04 | 36.63 | a | 47.97 | 64.10 | b | ----- | z | 87.28 | b | 78.10 | 69.63 | 56.58 | 32.23 | d | 22.94 | 49.34 | a | ||||||
1936 | 13.60 | a | 9.89 | a | 35.16 | 46.97 | 72.10 | 75.73 | 91.77 | 81.77 | 75.23 | 53.97 | 35.93 | 27.97 | 51.68 | |||||||||||
1937 | 15.48 | b | 24.04 | 35.10 | 49.17 | 68.32 | 76.13 | 80.94 | 83.90 | 68.90 | 52.00 | 37.66 | a | 23.52 | 51.26 | |||||||||||
1938 | 18.19 | 27.85 | a | 46.17 | a | 54.07 | 61.97 | 74.50 | 77.13 | 78.10 | 68.69 | a | 64.61 | 39.60 | 25.74 | 53.05 | ||||||||||
1939 | 26.06 | 19.79 | 37.42 | 51.47 | 74.16 | 76.17 | 86.58 | 80.87 | 74.00 | 56.55 | 46.33 | 35.71 | 55.43 | |||||||||||||
1940 | 17.56 | f | 27.32 | a | 32.97 | 51.43 | 65.32 | 75.83 | 84.35 | 76.42 | 76.47 | 61.42 | 34.67 | 28.52 | 55.88 | a | ||||||||||
1941 | 23.10 | 25.57 | 35.84 | 61.00 | 72.48 | 76.97 | 83.68 | 80.87 | 71.87 | 61.63 | a | ----- | z | ----- | z | 59.30 | b | |||||||||
1942 | ----- | z | 32.00 | v | 42.41 | d | 63.25 | b | 64.56 | f | 77.24 | a | 79.48 | 78.74 | 65.57 | 60.81 | 41.10 | 21.90 | a | 58.94 | c | |||||
1943 | 17.39 | 27.75 | 30.61 | 52.47 | 65.81 | 77.70 | 86.29 | 81.65 | 69.37 | 63.58 | 38.90 | 32.53 | a | 53.67 | ||||||||||||
1944 | 37.82 | c | 33.73 | c | 40.04 | d | 54.20 | 73.97 | a | 78.37 | c | 80.79 | b | 80.40 | a | 69.73 | 61.40 | a | 44.71 | f | 27.88 | g | 61.05 | b | ||
1945 | 20.97 | 29.35 | b | 48.67 | a | 51.85 | d | 62.96 | d | 72.04 | c | 77.66 | b | 78.55 | b | 68.41 | c | 58.63 | d | 37.52 | g | 20.54 | e | 53.60 | a | |
1946 | 24.77 | e | 24.88 | c | 52.50 | e | 60.81 | d | 67.52 | d | 75.00 | a | 82.89 | d | 79.92 | e | 71.21 | f | 60.62 | e | 44.00 | e | 27.84 | f | 57.29 | b |
1947 | 31.60 | k | 24.36 | c | 38.28 | b | 50.89 | b | 65.50 | c | 74.96 | c | 85.52 | 90.68 | c | 72.04 | b | 70.00 | b | 35.25 | b | 29.00 | c | 57.86 | a | |
1948 | 23.08 | g | 26.21 | a | 37.93 | b | 61.56 | c | 72.33 | d | 78.34 | a | 84.06 | 82.74 | 79.14 | b | 63.74 | 43.50 | b | 26.87 | 59.68 | a | ||||
1949 | 23.55 | b | 24.82 | 35.93 | a | 59.00 | a | 71.55 | 81.28 | a | 84.43 | a | 83.26 | 69.38 | a | 63.47 | a | 43.63 | 27.10 | a | 55.62 | |||||
1950 | 17.52 | 28.27 | b | 31.90 | 44.13 | 64.10 | b | 77.50 | ----- | z | 76.23 | 72.24 | a | 62.55 | 34.38 | f | 20.15 | e | 49.46 | b | ||||||
1951 | 21.07 | a | 29.12 | c | 31.55 | 52.10 | 72.81 | 72.87 | 81.32 | 73.68 | 65.37 | 56.58 | 33.93 | 24.29 | 51.22 | |||||||||||
1952 | 22.84 | 33.52 | 35.74 | 62.10 | 70.13 | 78.60 | 81.42 | 78.39 | 73.61 | b | 56.00 | 44.72 | a | 30.03 | 55.59 | |||||||||||
1953 | 25.13 | 27.29 | 38.52 | 50.28 | a | 70.06 | 78.80 | 81.23 | 81.42 | 71.60 | 69.03 | 47.67 | 28.55 | 55.80 | ||||||||||||
1954 | 18.10 | 38.21 | 36.26 | 54.77 | 61.13 | 79.40 | 81.26 | 77.90 | 67.00 | 54.35 | 44.37 | 29.87 | 53.55 | |||||||||||||
1955 | 22.16 | 24.96 | 36.06 | 63.87 | 73.94 | 77.07 | 84.77 | 83.48 | 70.93 | 60.29 | 33.77 | 21.97 | 54.44 | |||||||||||||
1956 | 26.16 | 27.07 | 35.42 | 50.90 | 67.74 | 81.23 | 77.19 | 78.48 | 70.52 | a | 66.13 | 41.07 | 30.00 | 54.33 | ||||||||||||
1957 | 16.58 | 27.89 | 39.26 | 56.73 | 67.61 | 75.23 | 84.19 | 79.61 | 67.80 | 53.50 | o | 38.63 | 31.23 | 53.16 | a | |||||||||||
1958 | 27.48 | 25.89 | 41.65 | 59.50 | 71.77 | 71.97 | 78.68 | 79.77 | 71.07 | 61.00 | 43.13 | 22.06 | 54.50 | |||||||||||||
1959 | 18.55 | 26.36 | 42.74 | 56.97 | 71.16 | 78.63 | 83.32 | 82.23 | 70.67 | 51.16 | 31.77 | 34.71 | 54.02 | |||||||||||||
1960 | 23.06 | 28.10 | 33.13 | 54.97 | 67.94 | 74.93 | 83.06 | 81.29 | 70.60 | 60.10 | 42.83 | 25.16 | 53.76 | |||||||||||||
1961 | 22.13 | 35.43 | 43.71 | 50.53 | 67.84 | 80.77 | 81.23 | 84.90 | 69.80 | 61.00 | 40.03 | 24.58 | 55.16 | |||||||||||||
1962 | 17.52 | 22.50 | 38.77 | 53.10 | 71.58 | 75.73 | 78.00 | 80.13 | 68.07 | 60.48 | 42.23 | 26.97 | 52.92 | |||||||||||||
1963 | 12.70 | a | 22.71 | 43.90 | 59.37 | 66.74 | 79.60 | 84.58 | 78.58 | 71.57 | 69.39 | 46.40 | 18.39 | 54.49 | ||||||||||||
1964 | 30.16 | 32.10 | 36.29 | 57.77 | 74.00 | 78.57 | 86.87 | 76.77 | 67.67 | 57.94 | 41.00 | 21.03 | 55.01 | |||||||||||||
1965 | 19.55 | 22.89 | 30.35 | 52.17 | 70.23 | 75.27 | 79.03 | a | 77.42 | 59.43 | 59.84 | 38.83 | 30.84 | 51.32 | ||||||||||||
1966 | 12.71 | 26.07 | 42.84 | 50.00 | 65.57 | a | 79.47 | 85.10 | 75.06 | 69.87 | 57.48 | 36.77 | 25.06 | 52.17 | ||||||||||||
1967 | 23.90 | 20.57 | 38.71 | 53.27 | 63.81 | 74.57 | 78.35 | 75.58 | 70.90 | 55.48 | 37.13 | 28.29 | 51.71 | |||||||||||||
1968 | 21.84 | 24.59 | 48.74 | 57.43 | 63.81 | 74.77 | 78.19 | 78.10 | 68.37 | 59.13 | 38.86 | a | 22.97 | 53.07 | ||||||||||||
1969 | 17.97 | 27.71 | 34.42 | 56.87 | 69.48 | 67.66 | a | 79.23 | 84.94 | 70.33 | 51.94 | 38.69 | a | 26.84 | 52.17 | |||||||||||
1970 | 14.94 | 25.93 | 35.13 | 54.47 | 65.19 | 78.86 | a | 83.68 | 80.23 | 68.53 | 56.48 | 36.63 | 23.94 | 52.00 | ||||||||||||
1971 | 14.87 | 25.04 | 35.03 | 57.10 | 66.35 | 79.37 | 76.43 | a | 76.97 | 70.10 | 60.90 | 38.07 | 25.03 | 52.11 | ||||||||||||
1972 | 15.00 | 20.10 | 33.97 | 49.50 | 72.23 | 76.00 | 76.10 | 75.74 | 65.30 | 51.00 | 35.67 | 18.55 | 49.10 | |||||||||||||
1973 | 24.97 | 28.82 | 45.94 | 53.73 | 63.90 | 75.87 | 79.13 | 78.90 | 65.50 | 61.81 | 39.47 | 24.06 | 53.51 | |||||||||||||
1974 | 20.10 | 27.68 | 36.52 | 56.77 | 63.29 | 74.33 | 83.87 | 74.90 | 64.57 | 57.84 | 40.33 | 30.58 | 52.56 | |||||||||||||
1975 | 22.71 | 26.46 | 32.74 | 46.93 | 72.13 | 74.33 | 82.29 | 78.52 | 64.20 | 60.58 | 44.33 | 23.32 | 52.38 | |||||||||||||
1976 | 19.84 | 34.66 | 38.10 | 61.03 | 69.10 | 80.47 | 84.42 | 81.94 | 72.43 | 52.42 | 33.93 | 18.10 | 53.87 | |||||||||||||
1977 | 10.19 | 28.82 | 45.45 | 62.50 | 78.61 | 76.03 | 82.23 | 73.19 | 66.73 | 57.13 | 39.07 | 21.58 | 53.46 | |||||||||||||
1978 | 16.81 | 23.21 | 41.13 | 54.97 | 72.61 | 76.00 | 77.87 | 79.06 | 72.40 | 57.48 | 37.87 | 20.94 | 52.53 | |||||||||||||
1979 | 10.81 | 19.29 | 35.35 | 51.47 | 62.94 | 75.17 | 80.00 | 75.42 | 70.66 | a | 54.29 | 37.47 | 30.39 | 50.27 | ||||||||||||
1980 | 20.94 | ----- | z | 35.94 | 60.07 | 75.42 | 76.43 | 84.13 | 77.55 | 66.43 | 52.74 | 41.73 | 25.35 | 56.07 | a | |||||||||||
1981 | 27.52 | 31.29 | 45.06 | 57.97 | 67.77 | 74.43 | 79.45 | 77.13 | 67.37 | 53.74 | 46.40 | 25.19 | 54.44 | |||||||||||||
1982 | 13.40 | a | 24.71 | 36.68 | 52.80 | 72.32 | 72.37 | 82.06 | 77.00 | 67.47 | 57.65 | 36.60 | 30.45 | 51.96 | ||||||||||||
1983 | 26.52 | 31.96 | 39.19 | 51.03 | 65.42 | 76.07 | 83.47 | a | 82.39 | 70.27 | 56.06 | 38.07 | 13.58 | 52.84 | ||||||||||||
1984 | 21.90 | 36.59 | 34.61 | 58.10 | 66.58 | 77.07 | 79.65 | 82.26 | 65.37 | 58.76 | b | 40.80 | 27.16 | 54.07 | ||||||||||||
1985 | 20.60 | a | 25.54 | 45.06 | 60.33 | 72.00 | 73.30 | 80.19 | 73.94 | 67.20 | 57.45 | 31.57 | 16.61 | 51.98 | ||||||||||||
1986 | 26.06 | 25.50 | 43.23 | 61.07 | a | 71.26 | 77.83 | 80.71 | 75.23 | 67.10 | 57.17 | a | 35.17 | 27.97 | 54.02 | |||||||||||
1987 | 26.03 | b | 38.32 | 46.23 | 65.24 | a | 70.10 | 80.80 | 82.90 | 76.58 | 71.17 | 50.65 | 43.47 | 29.20 | a | 56.72 | ||||||||||
1988 | 15.34 | b | 20.79 | 37.45 | 56.47 | 75.65 | 82.47 | 86.19 | 79.61 | 68.33 | 51.20 | a | 37.73 | 25.32 | 53.05 | |||||||||||
1989 | 26.94 | 16.64 | 31.30 | a | 51.30 | 67.29 | 73.87 | 82.65 | 77.58 | 68.90 | 59.71 | 34.07 | 16.26 | 50.54 | ||||||||||||
1990 | 31.16 | 29.39 | 42.10 | 55.03 | 64.29 | 76.13 | 78.39 | 77.39 | 70.20 | 55.39 | 45.03 | 24.52 | 54.08 | |||||||||||||
1991 | 19.90 | a | 32.39 | 40.87 | 58.43 | 69.03 | 77.73 | 76.87 | 79.50 | a | 63.85 | d | 53.94 | 30.85 | c | 29.96 | f | 54.85 | a | |||||||
1992 | 25.97 | 31.66 | 38.74 | 48.37 | 70.55 | 72.87 | 71.94 | 73.86 | c | 67.13 | 56.93 | a | 34.30 | 28.92 | e | 51.77 | ||||||||||
1993 | 22.42 | 25.79 | 39.65 | 50.73 | 64.55 | 70.47 | 76.00 | 77.90 | 62.30 | 53.94 | 34.67 | 25.19 | 50.30 | |||||||||||||
1994 | 11.13 | 19.64 | 40.23 | 53.70 | 69.87 | 76.47 | 76.84 | 74.87 | 70.33 | 57.90 | 44.27 | 30.97 | 52.18 | |||||||||||||
1995 | 23.03 | 25.86 | 40.23 | 47.07 | 66.48 | 79.67 | 78.74 | 78.74 | 67.17 | 54.23 | 30.57 | 22.35 | 51.18 | |||||||||||||
1996 | 16.68 | 23.66 | 31.06 | 48.70 | 64.45 | 74.53 | 75.53 | a | 79.19 | d | 68.33 | 57.29 | 31.30 | 21.45 | 49.35 | |||||||||||
1997 | 17.84 | 29.14 | 36.84 | 53.87 | 61.55 | 79.30 | c | 77.06 | 73.90 | 70.67 | 56.94 | 35.73 | 32.71 | 52.13 | ||||||||||||
1998 | 24.61 | 39.36 | 38.50 | a | 60.37 | 75.74 | 72.03 | 80.61 | 80.13 | 76.20 | 59.48 | 43.73 | 31.16 | 56.83 | ||||||||||||
1999 | 18.77 | 34.75 | 43.10 | 56.80 | 70.16 | 74.00 | 82.45 | 76.32 | 72.79 | p | 56.84 | 49.77 | 30.74 | 53.97 | a | |||||||||||
2000 | 23.32 | 33.83 | 47.90 | 54.10 | 69.13 | 72.53 | 78.65 | 77.90 | a | 68.57 | 60.90 | 38.37 | 14.26 | 53.29 | ||||||||||||
2001 | 27.00 | 21.14 | 37.45 | 54.10 | 67.94 | 74.63 | 81.03 | a | 81.65 | 68.17 | 56.16 | 52.00 | 32.90 | 54.51 | ||||||||||||
2002 | 29.58 | 34.29 | 30.87 | 51.10 | 61.55 | 76.60 | 81.97 | 76.68 | 65.56 | n | 47.19 | 38.27 | 29.94 | 50.73 | a | |||||||||||
2003 | 20.45 | 21.70 | r | 48.44 | v | 56.08 | f | 66.81 | 74.03 | 79.16 | 81.42 | 70.83 | 57.74 | 37.33 | 30.58 | 57.60 | c | |||||||||
2004 | 15.84 | 28.10 | 40.45 | 56.87 | 63.00 | 71.23 | 77.35 | 71.13 | 73.33 | 57.26 | 43.60 | 25.94 | 52.01 | |||||||||||||
2005 | 18.77 | 31.68 | 38.29 | 59.97 | 61.55 | 78.33 | 81.68 | 79.61 | 73.73 | 58.16 | 42.62 | a | 25.03 | 54.12 | ||||||||||||
2006 | 32.39 | 24.82 | 40.00 | 60.93 | 67.45 | 77.30 | 86.68 | 78.03 | 66.87 | 52.48 | 41.80 | 32.26 | 55.08 | |||||||||||||
2007 | 24.87 | 19.07 | 43.71 | 54.93 | 71.13 | 80.70 | 82.55 | 78.87 | 71.80 | 59.48 | 39.43 | 21.84 | 54.03 | |||||||||||||
2008 | 19.71 | 22.14 | 35.03 | 49.90 | 64.32 | 73.83 | 80.26 | 78.55 | 69.30 | 55.48 | 40.00 | 19.84 | 50.70 | |||||||||||||
2009 | 14.13 | 27.29 | 38.06 | 54.43 | 68.16 | 75.00 | 75.42 | 75.19 | 75.00 | 47.65 | 47.70 | 21.19 | 51.60 | |||||||||||||
2010 | 19.71 | 29.29 | 49.52 | 63.47 | 69.13 | 73.40 | ----- | z | 82.48 | 66.47 | 64.20 | a | 45.72 | e | 25.64 | c | 53.55 | a | ||||||||
2011 | 20.45 | 30.60 | c | 39.00 | j | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 25.53 | j | |
2012 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2013 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2014 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2015 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2016 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2017 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 21.31 | 27.36 | 38.78 | 55.20 | 68.84 | 76.94 | 81.79 | 79.35 | 70.14 | 58.17 | 39.79 | 25.61 | 53.42 | |||||||||||||
S.D. | 5.58 | 5.32 | 4.88 | 4.74 | 4.21 | 3.59 | 3.75 | 3.46 | 3.95 | 4.64 | 4.79 | 4.92 | 2.00 | |||||||||||||
SKEW | 0.19 | -0.09 | 0.40 | 0.12 | 0.08 | 0.79 | 0.15 | 0.53 | 0.47 | 0.13 | 0.22 | -0.23 | 0.49 | |||||||||||||
MAX | 37.82 | 39.36 | 52.50 | 65.24 | 78.87 | 90.30 | 91.77 | 90.68 | 81.23 | 70.00 | 52.00 | 36.74 | 60.47 | |||||||||||||
MIN | 10.19 | 9.89 | 29.94 | 44.13 | 61.06 | 67.66 | 71.94 | 71.13 | 59.43 | 47.19 | 30.57 | 13.58 | 49.10 | |||||||||||||
YRS | 86 | 87 | 89 | 89 | 90 | 90 | 88 | 91 | 88 | 90 | 85 | 85 | 70 |