YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1910 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1911 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1912 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1913 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1914 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1915 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1916 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1917 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1918 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1919 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1920 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1921 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1922 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1923 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1924 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1940 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1941 | 31.36 | q | 32.25 | 30.84 | 41.53 | 53.80 | a | 58.00 | 61.68 | 61.94 | 55.90 | 46.61 | 33.03 | 26.62 | b | 45.65 | a | |||||||||
1942 | 21.45 | 24.18 | 30.89 | c | 40.20 | e | 47.74 | 58.97 | 60.52 | 60.58 | 55.17 | 44.61 | 34.62 | d | 32.91 | t | 43.54 | a | ||||||||
1943 | 21.10 | 27.54 | 33.13 | 47.93 | a | 50.07 | a | 59.97 | 61.82 | i | 66.39 | 56.42 | d | 41.29 | 29.40 | 24.90 | 41.65 | a | ||||||||
1944 | 23.87 | 28.52 | 28.94 | 35.90 | 50.71 | 59.93 | 63.06 | 62.84 | 55.30 | 45.97 | 32.50 | 23.61 | 42.60 | |||||||||||||
1945 | 24.81 | 28.39 | 33.61 | 36.10 | 52.74 | 54.93 | 61.52 | 64.13 | 54.33 | 45.39 | 33.30 | 25.47 | a | 42.89 | ||||||||||||
1946 | 24.10 | 27.86 | 34.52 | 47.07 | 48.77 | 59.77 | 63.00 | 63.84 | 58.00 | 47.13 | 33.31 | d | 30.26 | 44.80 | ||||||||||||
1947 | 24.87 | 25.00 | 29.42 | 38.83 | 49.06 | 58.81 | n | 63.13 | 63.16 | 56.60 | 47.72 | b | 28.53 | 24.52 | 40.99 | a | ||||||||||
1948 | 19.80 | a | 25.48 | 27.23 | 43.53 | 50.06 | 61.20 | 64.84 | 62.90 | 55.93 | 44.78 | d | 27.57 | 27.45 | 42.56 | |||||||||||
1949 | 17.87 | 29.14 | 32.52 | 41.90 | 52.65 | h | 58.20 | 63.42 | 61.19 | 55.27 | 44.48 | b | 34.03 | 24.30 | a | 42.03 | a | |||||||||
1950 | 26.42 | 29.96 | 29.42 | 39.97 | 49.03 | 60.23 | 62.35 | 59.97 | 54.60 | 49.16 | 29.20 | 24.10 | a | 42.87 | ||||||||||||
1951 | 21.32 | 25.68 | 32.19 | 37.37 | 50.32 | 57.43 | 66.45 | 65.30 | a | 55.33 | 45.68 | 29.63 | 27.87 | 42.88 | ||||||||||||
1952 | 28.58 | 28.72 | 29.42 | 41.60 | 49.48 | 63.53 | 63.06 | 65.48 | 54.83 | 41.71 | 29.03 | 25.29 | 43.40 | |||||||||||||
1953 | 29.94 | 26.14 | 38.03 | 40.47 | 48.16 | 64.77 | 65.29 | 62.55 | 55.70 | 46.00 | 33.47 | 21.97 | 44.37 | |||||||||||||
1954 | 26.87 | 31.57 | 33.20 | a | 46.00 | 50.32 | 61.57 | 66.35 | 64.90 | 60.03 | 47.90 | 34.10 | 26.87 | 45.81 | ||||||||||||
1955 | 25.45 | 22.64 | 32.55 | 42.03 | 51.52 | 56.73 | 62.81 | 63.29 | 58.20 | 45.97 | 32.27 | 28.77 | 43.52 | |||||||||||||
1956 | 26.97 | 23.04 | a | 32.68 | 39.23 | 53.30 | a | 62.77 | 63.87 | 62.26 | 57.37 | 48.03 | 29.07 | 26.00 | 43.71 | |||||||||||
1957 | 25.81 | 36.75 | 34.39 | 39.20 | 48.87 | 58.73 | 65.65 | 64.68 | 52.87 | 45.94 | 31.87 | 29.61 | 44.53 | |||||||||||||
1958 | 24.68 | 28.68 | 29.77 | 39.70 | 52.23 | 62.37 | 64.26 | 63.71 | 57.03 | 44.71 | 32.30 | 22.45 | 43.49 | |||||||||||||
1959 | 21.39 | 26.61 | 29.90 | 41.00 | 52.77 | 59.80 | 60.97 | 62.87 | 55.07 | 41.84 | 27.37 | 27.26 | 42.24 | |||||||||||||
1960 | 22.16 | 20.79 | 29.71 | 41.63 | 46.61 | 60.77 | 61.26 | 61.55 | 54.20 | 43.23 | 32.70 | 22.03 | 41.39 | |||||||||||||
1961 | 18.03 | 25.21 | 31.65 | 37.63 | 48.52 | 57.97 | 59.16 | 58.87 | 50.87 | 41.10 | 27.63 | 24.13 | 40.06 | |||||||||||||
1962 | 16.94 | 27.75 | 27.65 | 39.30 | 50.52 | 55.90 | 61.06 | 61.55 | 57.07 | 45.48 | 33.83 | 26.23 | 41.94 | |||||||||||||
1963 | 14.29 | 27.39 | 33.42 | 44.77 | 51.84 | 60.00 | 66.03 | 63.65 | 57.57 | 49.19 | 33.93 | 20.90 | 43.58 | |||||||||||||
1964 | 20.06 | 19.45 | 29.65 | 39.17 | 50.13 | 58.77 | 65.48 | 62.74 | 56.87 | 44.71 | 34.33 | 25.65 | 42.25 | |||||||||||||
1965 | 26.42 | 23.39 | 26.00 | 44.60 | 51.06 | 59.00 | 64.00 | 60.84 | 54.20 | 41.74 | 38.37 | 29.03 | 43.22 | |||||||||||||
1966 | 18.52 | 23.07 | 33.71 | 41.63 | 50.23 | 59.30 | 66.90 | 61.32 | 56.07 | 41.45 | 35.50 | 21.55 | 42.44 | |||||||||||||
1967 | 23.52 | 25.32 | 37.73 | a | 45.38 | a | 48.19 | 60.90 | 63.52 | 59.58 | 55.23 | 42.94 | 34.77 | 20.72 | b | 43.15 | ||||||||||
1968 | 27.58 | e | 26.10 | 34.90 | 39.03 | 50.32 | c | 59.50 | 63.33 | a | 61.68 | 53.70 | 45.03 | 33.63 | 24.42 | 43.27 | ||||||||||
1969 | 28.75 | c | 28.21 | 27.00 | 44.77 | 51.71 | 57.83 | 67.06 | 64.19 | 57.83 | 42.45 | 32.27 | 27.68 | 44.15 | ||||||||||||
1970 | 20.52 | 29.54 | b | 29.70 | d | 36.87 | 47.26 | 54.90 | 62.42 | l | 60.90 | 54.60 | 38.68 | 30.14 | a | 26.13 | 39.02 | a | ||||||||
1971 | 24.45 | 24.93 | 31.68 | 39.43 | 48.45 | 57.90 | ----- | z | 55.81 | 50.40 | 39.77 | 30.80 | 23.74 | 38.85 | a | |||||||||||
1972 | 20.86 | b | 21.34 | 31.55 | 40.97 | 45.42 | 54.13 | 55.48 | 53.55 | 48.83 | a | 38.68 | 22.13 | 21.94 | 37.91 | |||||||||||
1973 | 22.19 | 25.54 | 32.90 | 35.00 | a | 45.77 | 55.13 | 59.87 | 60.06 | 53.03 | 43.76 | b | ----- | z | ----- | z | 43.33 | b | ||||||||
1974 | 25.42 | e | ----- | z | ----- | z | 40.15 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 24.39 | c | 29.99 | i |
1975 | 25.26 | 24.93 | 28.73 | a | 37.37 | 46.77 | 56.67 | 60.26 | 61.29 | 50.27 | 40.26 | ----- | z | ----- | z | 43.18 | b | |||||||||
1976 | 19.17 | b | 31.59 | 31.06 | 43.70 | 48.13 | a | 57.43 | 59.94 | 59.58 | 54.20 | 36.35 | 26.03 | 20.52 | 40.64 | |||||||||||
1977 | 18.32 | 27.56 | a | 31.45 | 42.30 | 52.87 | 60.47 | 63.35 | 62.90 | a | 56.50 | 46.55 | 30.69 | a | 28.17 | b | 43.43 | |||||||||
1978 | 19.97 | a | 23.25 | 33.39 | 42.38 | a | 49.77 | 59.57 | 63.16 | 56.19 | 50.17 | 40.90 | 34.00 | a | 18.55 | b | 40.94 | |||||||||
1979 | 16.06 | 22.33 | a | 31.00 | 40.83 | 49.87 | 56.37 | 63.13 | 60.39 | 55.90 | 43.55 | 27.20 | 23.74 | 40.86 | ||||||||||||
1980 | 24.17 | b | 26.52 | 30.48 | 36.93 | 49.03 | 64.13 | 67.81 | 63.52 | 56.40 | 40.71 | 31.13 | 28.65 | 43.29 | ||||||||||||
1981 | 24.67 | a | 26.85 | a | 34.84 | 43.93 | 49.48 | b | 60.87 | 64.55 | 60.65 | 54.73 | 45.29 | 36.83 | 26.58 | 44.11 | ||||||||||
1982 | 22.13 | a | 24.19 | a | 32.48 | 40.67 | 49.52 | 57.97 | 63.06 | 63.19 | 56.40 | 39.68 | 30.36 | b | 22.55 | 41.85 | ||||||||||
1983 | 21.97 | b | 28.48 | a | 32.23 | 35.00 | 45.19 | 55.43 | 62.79 | b | 63.10 | 56.27 | 46.71 | 35.33 | 17.11 | c | 41.63 | |||||||||
1984 | 21.29 | 25.71 | a | 30.60 | a | 34.86 | a | 50.97 | a | 59.97 | a | 61.58 | 60.55 | 50.79 | b | 41.53 | a | 33.53 | 27.90 | 41.61 | ||||||
1985 | 20.32 | 23.69 | b | 34.77 | 42.90 | ----- | z | 58.07 | 61.06 | 61.31 | b | 53.27 | ----- | z | 33.03 | 19.55 | 40.80 | b | ||||||||
1986 | 24.84 | 29.25 | 35.87 | ----- | z | ----- | z | 60.03 | 63.71 | 62.13 | 55.50 | 43.90 | a | 30.83 | 26.84 | 43.29 | b | |||||||||
1987 | 25.55 | 29.61 | 31.32 | 36.90 | a | 50.48 | 58.90 | 62.84 | 62.17 | a | 54.23 | 46.23 | 31.30 | 24.73 | a | 42.85 | ||||||||||
1988 | 22.55 | 25.38 | 30.61 | 39.67 | 48.58 | 59.83 | 61.52 | 62.70 | d | 53.90 | i | 46.45 | 34.17 | 23.97 | 41.40 | a | ||||||||||
1989 | 25.52 | 26.07 | 35.06 | 44.83 | 52.61 | 57.43 | 62.23 | 62.70 | a | 52.60 | 44.58 | 32.57 | 19.77 | 43.00 | ||||||||||||
1990 | 25.16 | 26.96 | 35.60 | a | 43.27 | 50.32 | 66.77 | 62.74 | 61.45 | 58.43 | 43.23 | 36.10 | 22.27 | a | 44.36 | |||||||||||
1991 | 23.74 | 28.64 | 34.65 | 42.67 | 53.45 | 59.43 | 62.48 | 62.29 | 53.57 | 43.23 | 31.53 | 28.10 | 43.65 | |||||||||||||
1992 | 24.65 | 31.62 | 35.68 | 43.90 | 50.70 | a | 56.93 | 62.45 | 60.87 | 54.67 | 46.16 | 28.62 | a | 26.74 | 43.58 | |||||||||||
1993 | 27.13 | 27.00 | a | 32.77 | 41.20 | 48.90 | 58.90 | 65.00 | 61.48 | 53.93 | a | 40.94 | 27.30 | 24.74 | 42.44 | |||||||||||
1994 | 22.58 | 25.37 | a | 34.29 | 41.50 | 53.03 | 62.37 | 63.87 | 63.65 | 55.03 | 44.61 | 35.03 | 29.23 | 44.21 | ||||||||||||
1995 | 27.74 | 31.64 | 34.03 | 39.60 | 50.71 | 57.80 | 64.06 | 64.35 | 56.07 | 44.33 | a | 35.52 | a | 27.50 | a | 44.45 | ||||||||||
1996 | 24.31 | b | 30.97 | 29.77 | a | 41.68 | b | 57.16 | 62.07 | 65.68 | 63.42 | 54.10 | a | 43.93 | a | 33.50 | b | 26.77 | a | 44.45 | ||||||
1997 | 23.06 | 26.15 | a | 34.32 | 37.57 | 50.93 | a | 59.33 | 64.07 | a | 63.68 | 59.52 | a | 45.00 | a | 30.96 | b | 22.81 | 43.12 | |||||||
1998 | 28.84 | 29.29 | 31.33 | a | 38.50 | 53.61 | 61.62 | a | 66.08 | f | 63.30 | d | 66.56 | c | 55.73 | i | 45.25 | n | 27.77 | r | 46.63 | d | ||||
1999 | ----- | z | ----- | z | ----- | z | 45.25 | n | 57.96 | e | 60.03 | a | 65.65 | 64.32 | 56.33 | 42.59 | b | 36.14 | a | 24.77 | 50.97 | d | ||||
2000 | 28.32 | 32.69 | 34.72 | b | 44.80 | 56.42 | 61.19 | d | 65.27 | a | 63.62 | b | 56.57 | 45.96 | c | 21.55 | h | ----- | z | 48.96 | b | |||||
2001 | ----- | z | ----- | z | 31.71 | c | 45.15 | c | 50.85 | d | 60.93 | a | 67.00 | u | 64.12 | n | ----- | z | ----- | z | 37.53 | 25.10 | 41.88 | f | ||
2002 | 26.25 | c | 24.92 | d | 29.57 | a | 45.07 | 51.00 | b | 63.90 | a | 65.19 | 65.03 | 57.43 | 41.57 | a | 29.53 | 26.23 | a | 43.81 | ||||||
2003 | 23.65 | 24.72 | c | 32.89 | c | 40.40 | 47.58 | 53.68 | b | 62.26 | 62.47 | a | 51.93 | a | 43.48 | 32.90 | 25.90 | 41.82 | ||||||||
2004 | 27.07 | a | 24.36 | d | 40.79 | b | 42.40 | 52.13 | a | 59.28 | a | 62.69 | b | 60.80 | a | 53.91 | g | 49.23 | a | 33.00 | i | ----- | z | 46.53 | c | |
2005 | 28.60 | u | 31.79 | 31.71 | 38.80 | 49.97 | a | 60.17 | 62.16 | 61.26 | 55.73 | 45.45 | 32.60 | 24.89 | c | 44.96 | a | |||||||||
2006 | 26.00 | 24.68 | 34.30 | a | 43.53 | 51.97 | a | 59.37 | 64.13 | a | 62.48 | j | 51.50 | 43.90 | 32.10 | 25.32 | 41.53 | a | ||||||||
2007 | 19.17 | a | 27.43 | 37.03 | 35.62 | a | 49.50 | a | 55.80 | 61.26 | 64.19 | 58.53 | 43.68 | 32.53 | 26.48 | 42.60 | ||||||||||
2008 | 20.67 | a | 28.93 | a | 32.74 | 38.18 | b | ----- | z | ----- | z | ----- | z | 60.06 | m | 56.08 | r | 42.74 | 29.67 | 24.93 | a | 31.12 | e | |||
2009 | 24.76 | b | 30.07 | 37.39 | 40.37 | 50.55 | 60.60 | 63.00 | 62.13 | 52.93 | 41.29 | 32.17 | 21.55 | 43.07 | ||||||||||||
2010 | 22.55 | 26.07 | 32.65 | 43.30 | 49.16 | 62.13 | 63.94 | 62.97 | 58.17 | 43.77 | 29.47 | 27.65 | 43.48 | |||||||||||||
2011 | 20.27 | a | 22.11 | a | 35.77 | 42.57 | 49.37 | a | 62.93 | 67.61 | 67.77 | 54.87 | 44.03 | 32.43 | 24.10 | a | 43.65 | |||||||||
2012 | 26.48 | 27.55 | 37.71 | 45.63 | 52.16 | 64.10 | 65.10 | 62.87 | 56.77 | 43.74 | ----- | z | ----- | z | 48.21 | b | ||||||||||
2013 | 24.32 | ----- | z | ----- | z | ----- | z | 48.00 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 36.16 | j | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 23.38 | 26.88 | 32.50 | 40.97 | 50.35 | 59.47 | 63.31 | 62.24 | 55.29 | 43.95 | 31.96 | 24.92 | 42.92 | |||||||||||||
S.D. | 3.35 | 3.17 | 2.85 | 3.10 | 2.45 | 2.63 | 2.17 | 2.28 | 2.71 | 2.65 | 2.97 | 2.82 | 1.36 | |||||||||||||
SKEW | -0.40 | 0.31 | 0.25 | -0.04 | 0.63 | 0.15 | -0.49 | -1.09 | 0.63 | -0.29 | -0.53 | -0.49 | -1.09 | |||||||||||||
MAX | 29.94 | 36.75 | 40.79 | 47.93 | 57.96 | 66.77 | 67.81 | 67.77 | 66.56 | 49.23 | 38.37 | 30.26 | 45.81 | |||||||||||||
MIN | 14.29 | 19.45 | 26.00 | 34.86 | 45.19 | 53.68 | 55.48 | 53.55 | 48.83 | 36.35 | 22.13 | 17.11 | 37.91 | |||||||||||||
YRS | 69 | 69 | 70 | 70 | 68 | 69 | 65 | 68 | 67 | 68 | 65 | 65 | 50 |