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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1942 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1943 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1944 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1945 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1951 | ----- | z | ----- | z | 40.03 | 49.18 | 56.87 | 63.90 | 73.31 | 68.76 | 63.40 | 50.16 | 37.93 | 28.66 | 53.22 | b | ||||||||||
1952 | 29.00 | 31.79 | 34.95 | a | 50.28 | 58.60 | 64.00 | 70.97 | 70.68 | 64.75 | 55.19 | 36.15 | 30.61 | 49.75 | ||||||||||||
1953 | 36.81 | 33.43 | 40.84 | 44.45 | 49.35 | 64.85 | 72.77 | 68.40 | 63.22 | 52.08 | 43.12 | 29.73 | 49.92 | |||||||||||||
1954 | 33.97 | 41.43 | 37.69 | 52.10 | a | 59.16 | 64.12 | 73.18 | 68.05 | 63.58 | 54.68 | 45.25 | 34.55 | 52.31 | ||||||||||||
1955 | 26.63 | 29.38 | 40.27 | 46.00 | 55.11 | 64.65 | 71.32 | 72.81 | 64.68 | 56.74 | 41.23 | 37.03 | 50.49 | |||||||||||||
1956 | 37.65 | 32.28 | 42.02 | 48.22 | 58.87 | 68.12 | 71.61 | 68.48 | 65.97 | 51.85 | 38.12 | 34.02 | a | 51.43 | ||||||||||||
1957 | 31.89 | 41.59 | 43.40 | 46.83 | 53.13 | 66.57 | 71.87 | 69.37 | 63.17 | 50.15 | 36.65 | 35.58 | 50.85 | |||||||||||||
1958 | 33.61 | 40.36 | 36.58 | 45.72 | 60.66 | 66.50 | 70.31 | 73.87 | 64.27 | 55.31 | 39.48 | 37.52 | 52.01 | |||||||||||||
1959 | 32.31 | 33.55 | 40.52 | 51.68 | 55.62 | a | 68.58 | 74.76 | 69.81 | 60.78 | 52.31 | 41.33 | a | 36.89 | 51.51 | |||||||||||
1960 | 27.61 | 30.86 | 43.92 | 49.30 | 57.02 | 68.18 | 72.50 | 69.71 | 64.83 | 48.13 | 37.92 | 28.84 | 49.90 | |||||||||||||
1961 | 30.18 | 33.55 | 35.19 | 46.38 | 56.52 | 70.05 | 73.68 | 69.61 | 56.50 | 48.47 | 35.23 | 30.45 | 48.82 | |||||||||||||
1962 | 31.28 | a | 35.02 | 36.53 | 53.23 | 54.34 | 63.90 | 68.79 | l | 69.44 | 63.03 | 52.85 | 43.27 | 32.37 | 48.66 | a | ||||||||||
1963 | 23.84 | 38.70 | 33.35 | 38.91 | b | 54.74 | 58.55 | 68.60 | 68.44 | 62.83 | 54.15 | 40.43 | a | 28.98 | 47.63 | |||||||||||
1964 | 23.95 | 25.88 | 28.74 | 38.30 | e | 51.11 | 60.17 | 70.24 | 66.23 | 57.58 | 55.27 | ----- | z | 28.25 | k | 47.75 | b | |||||||||
1965 | 30.02 | 29.27 | 34.88 | c | 47.17 | a | 53.60 | 59.12 | 70.61 | 69.82 | 56.58 | 54.30 | c | 42.55 | 34.39 | 48.53 | ||||||||||
1966 | 28.36 | c | 27.02 | 38.74 | 48.36 | a | 59.16 | 66.25 | 72.53 | 74.92 | 65.92 | 52.60 | 43.93 | a | 34.26 | 51.00 | ||||||||||
1967 | 29.61 | 36.19 | a | 41.06 | 41.35 | 54.40 | 62.55 | 74.58 | 73.05 | 64.65 | 55.16 | 43.82 | 26.84 | 50.27 | ||||||||||||
1968 | 30.26 | 40.24 | 42.56 | 45.65 | 55.45 | 66.08 | 72.23 | 68.15 | 63.85 | 52.47 | 41.28 | a | 26.03 | 50.35 | ||||||||||||
1969 | 32.85 | 32.80 | 35.68 | 48.35 | 60.19 | 64.65 | 72.39 | 75.32 | 67.22 | 49.84 | 42.58 | 36.52 | 51.53 | |||||||||||||
1970 | 33.39 | 42.34 | 39.29 | 42.93 | 60.00 | 69.10 | 75.58 | 73.71 | 61.48 | 49.68 | 41.47 | 31.02 | 51.67 | |||||||||||||
1971 | 31.43 | a | 34.00 | 40.31 | 48.80 | 53.02 | 66.33 | 74.94 | 72.19 | 63.23 | 49.74 | 40.65 | 27.94 | 50.21 | ||||||||||||
1972 | 32.34 | 38.57 | 48.48 | 49.17 | 58.95 | 67.87 | 75.68 | 70.81 | 62.25 | 50.15 | 36.68 | 28.42 | 51.61 | |||||||||||||
1973 | 25.60 | 35.59 | 35.55 | t | 46.17 | 59.42 | 67.97 | 73.52 | 71.92 | 63.83 | 52.39 | 40.12 | b | 34.68 | 51.93 | a | ||||||||||
1974 | 29.05 | 34.09 | 44.55 | 48.05 | 59.63 | 69.58 | 72.32 | 69.23 | 63.77 | 55.06 | 41.68 | 30.37 | 51.45 | |||||||||||||
1975 | 30.42 | 34.15 | a | 37.84 | 41.97 | 53.03 | a | 64.85 | 72.15 | 69.42 | 64.25 | 51.33 | a | 40.05 | 36.39 | 49.65 | ||||||||||
1976 | 33.56 | 40.41 | 39.62 | c | 47.52 | a | 60.03 | 64.93 | 71.72 | a | 68.82 | 62.22 | 51.28 | b | 44.29 | b | 33.92 | 51.53 | ||||||||
1977 | 28.35 | 39.86 | 37.08 | 51.10 | 52.35 | a | 68.98 | a | 72.58 | 71.53 | 62.58 | 54.98 | 43.17 | 37.24 | 51.65 | |||||||||||
1978 | 36.00 | a | 36.95 | 46.56 | 47.25 | 55.92 | 65.72 | 70.90 | a | 68.50 | 61.93 | 55.69 | 40.43 | 27.34 | 51.10 | |||||||||||
1979 | 25.90 | 31.12 | 40.05 | 46.97 | 56.24 | 65.52 | 70.89 | 67.18 | 65.82 | 55.27 | 38.48 | 36.00 | 49.95 | |||||||||||||
1980 | 34.38 | a | 39.78 | 38.61 | 49.53 | 54.23 | 64.45 | 70.95 | 69.97 | 64.35 | 52.68 | 43.80 | 41.40 | 52.01 | ||||||||||||
1981 | 37.73 | 39.23 | b | 40.84 | 53.47 | 56.43 | a | 68.05 | 73.26 | 70.56 | 63.57 | 47.98 | 44.80 | 38.67 | a | 52.88 | ||||||||||
1982 | 32.43 | d | 39.20 | c | 44.02 | h | 48.15 | 56.45 | 64.48 | a | 71.42 | a | 71.48 | 63.78 | a | 50.65 | 39.20 | 33.08 | 51.85 | a | ||||||
1983 | 35.95 | a | 38.82 | 40.50 | 43.79 | a | 54.83 | a | 65.97 | 72.56 | 71.16 | 66.30 | 54.16 | 40.78 | 35.22 | a | 51.67 | |||||||||
1984 | 35.13 | 36.97 | 41.73 | c | 46.75 | 63.08 | 66.83 | 72.95 | 72.19 | 65.60 | 48.35 | 39.98 | 33.52 | 51.92 | ||||||||||||
1985 | 31.97 | a | 33.95 | 41.00 | 52.98 | 59.95 | 68.75 | 75.20 | a | 71.48 | 60.98 | 54.89 | l | 37.37 | c | 37.37 | 51.91 | a | ||||||||
1986 | 40.90 | a | 39.16 | 47.03 | 49.83 | 60.22 | a | 69.67 | 70.53 | a | 73.63 | 58.68 | 51.27 | 43.46 | c | 37.08 | a | 53.46 | ||||||||
1987 | 31.97 | b | 37.15 | b | 40.62 | a | 53.62 | a | 58.21 | 70.02 | 69.94 | 69.81 | 65.42 | 57.32 | a | 42.07 | 31.16 | b | 52.27 | |||||||
1988 | 32.00 | 41.31 | 41.71 | 50.18 | 58.50 | b | 69.47 | 75.48 | 71.32 | a | 63.53 | 59.32 | a | 41.48 | a | 34.18 | 53.21 | |||||||||
1989 | 30.12 | a | 34.50 | 47.08 | 55.42 | 57.90 | a | 68.52 | 75.81 | 69.42 | 65.25 | 53.07 | a | 44.23 | 36.16 | 53.12 | ||||||||||
1990 | 34.32 | 36.06 | a | 44.87 | 52.80 | 57.17 | a | 70.40 | a | 74.47 | a | 70.92 | 67.03 | 54.95 | a | 42.55 | 28.06 | 52.80 | ||||||||
1991 | 32.50 | a | 43.18 | 38.45 | 46.05 | 54.94 | 64.66 | a | 74.89 | 72.63 | a | 66.03 | 57.15 | a | 42.63 | 35.56 | 52.39 | |||||||||
1992 | 33.26 | 40.78 | 44.53 | a | 55.50 | 60.44 | 65.83 | 70.81 | 72.17 | a | 66.17 | 57.05 | a | 38.37 | 30.66 | b | 52.96 | |||||||||
1993 | 34.42 | a | 36.54 | a | 46.05 | 50.96 | b | 60.05 | 66.02 | 71.15 | a | 71.53 | 65.35 | 50.02 | a | 39.32 | 34.60 | 52.17 | ||||||||
1994 | 36.84 | 34.17 | a | 48.11 | 51.07 | 58.61 | 72.20 | 76.29 | 75.97 | 67.18 | 51.95 | 36.27 | 36.08 | 53.73 | ||||||||||||
1995 | 34.68 | c | 45.11 | a | 44.83 | b | 47.70 | 54.79 | 63.95 | 73.38 | a | 75.42 | 67.35 | 55.08 | a | 46.89 | b | 37.60 | 53.90 | |||||||
1996 | 35.03 | 42.07 | 45.93 | a | 52.33 | 61.08 | 70.80 | 77.26 | 75.70 | a | 64.05 | 51.89 | 43.22 | 35.62 | a | 54.58 | ||||||||||
1997 | 33.63 | a | 38.11 | a | 47.98 | c | 49.25 | b | 62.84 | c | 66.97 | m | 73.37 | 73.23 | 66.96 | b | 52.83 | a | 43.93 | b | 35.92 | 52.55 | a | |||
1998 | 36.87 | a | 34.63 | a | 43.15 | a | 47.23 | 55.24 | 62.57 | a | 74.88 | a | 74.62 | a | 66.23 | b | 52.29 | 41.83 | 37.74 | 52.27 | ||||||
1999 | 37.92 | a | 39.96 | 45.69 | 45.67 | 57.52 | a | 66.97 | a | 72.45 | 72.77 | a | 65.20 | 56.16 | 48.12 | b | 37.31 | 53.81 | ||||||||
2000 | 37.58 | a | 40.21 | 44.13 | a | 55.67 | a | 62.62 | a | 71.05 | 73.47 | a | 75.71 | 66.40 | a | 54.00 | b | 35.81 | c | 37.07 | a | 54.48 | ||||
2001 | 33.53 | a | 37.48 | b | 45.56 | 49.83 | a | 63.04 | c | 69.24 | a | 72.46 | c | 73.59 | b | 68.77 | 56.48 | a | 45.77 | 30.92 | a | 53.89 | ||||
2002 | 33.34 | b | 38.43 | a | 42.35 | a | 54.31 | f | 59.10 | b | 70.72 | 78.33 | a | 73.24 | 65.40 | a | 51.81 | d | 43.86 | a | 32.57 | a | 53.56 | a | ||
2003 | 41.92 | 35.40 | b | 43.36 | b | 47.70 | 48.38 | w | 67.11 | b | 75.35 | 72.79 | 65.10 | 58.52 | 38.62 | 34.20 | a | 52.73 | a | |||||||
2004 | 33.45 | a | 31.79 | a | 49.48 | 49.95 | 58.82 | 66.17 | 73.08 | 69.47 | a | 62.88 | 51.32 | a | 40.70 | 36.29 | 51.95 | |||||||||
2005 | 37.84 | 38.76 | a | 41.42 | 48.47 | 58.08 | a | 63.08 | 74.71 | b | 70.06 | 62.71 | b | 54.40 | 43.10 | 33.62 | a | 52.19 | ||||||||
2006 | 35.24 | 38.11 | 38.68 | 50.27 | 61.02 | 70.20 | 74.92 | a | 70.53 | b | 60.79 | a | 51.66 | 42.07 | 32.31 | 52.15 | ||||||||||
2007 | 32.14 | b | 38.73 | b | 46.73 | 50.50 | 60.48 | 68.42 | 76.21 | 73.15 | 64.13 | 52.72 | a | 46.93 | 31.25 | a | 53.45 | |||||||||
2008 | 29.97 | a | 33.88 | c | 43.03 | 48.24 | a | ----- | z | 66.00 | e | 72.79 | 72.95 | 65.67 | a | 54.65 | 46.50 | d | 30.34 | b | 51.28 | a | ||||
2009 | 34.90 | a | 36.61 | 42.47 | a | 47.95 | 61.61 | 63.32 | b | 74.68 | a | 70.27 | 66.18 | 49.31 | 44.95 | 26.66 | b | 51.58 | ||||||||
2010 | 32.44 | 34.07 | 41.37 | ----- | z | 53.10 | 66.30 | 74.97 | 72.05 | 66.08 | 53.95 | a | 38.60 | 37.27 | a | 51.84 | a | |||||||||
2011 | 31.48 | b | 33.77 | b | 41.69 | b | 46.33 | a | 52.67 | a | 65.97 | 73.16 | b | 73.39 | 65.19 | a | 53.76 | 39.59 | a | 31.72 | a | 50.72 | ||||
2012 | 34.82 | a | 36.69 | 42.94 | 52.12 | a | 62.23 | a | 68.33 | a | 72.05 | 73.11 | 65.75 | 53.94 | 44.30 | 30.81 | 53.09 | |||||||||
2013 | 26.67 | b | 35.91 | a | 44.09 | b | 48.62 | b | 57.32 | c | 69.88 | ----- | z | 70.21 | e | 65.37 | 50.05 | 42.94 | d | ----- | z | 51.11 | b | |||
2014 | 35.00 | 36.95 | 44.26 | 49.93 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 41.53 | h | ||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 32.67 | 36.47 | 41.63 | 48.54 | 57.46 | 66.56 | 73.13 | 71.34 | 64.09 | 53.03 | 41.47 | 33.42 | 51.72 | |||||||||||||
S.D. | 3.76 | 3.93 | 4.07 | 3.58 | 3.19 | 2.89 | 1.97 | 2.30 | 2.47 | 2.65 | 3.01 | 3.55 | 1.52 | |||||||||||||
SKEW | -0.17 | -0.37 | -0.49 | -0.48 | -0.25 | -0.49 | 0.24 | 0.14 | -1.18 | 0.09 | -0.09 | -0.27 | -0.38 | |||||||||||||
MAX | 41.92 | 45.11 | 49.48 | 55.67 | 63.08 | 72.20 | 78.33 | 75.97 | 68.77 | 59.32 | 48.12 | 41.40 | 54.58 | |||||||||||||
MIN | 23.84 | 25.88 | 28.74 | 38.30 | 49.35 | 58.55 | 68.60 | 66.23 | 56.50 | 47.98 | 35.23 | 26.03 | 47.63 | |||||||||||||
YRS | 63 | 63 | 62 | 62 | 61 | 62 | 61 | 63 | 63 | 62 | 62 | 61 | 51 |