YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1915 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 56.48 | g | 44.32 | l | 39.20 | 34.48 | b | 36.84 | j | |
1916 | 35.62 | g | 42.14 | 48.62 | e | 46.61 | g | 48.58 | 57.63 | 68.23 | 67.74 | 62.43 | i | ----- | z | ----- | z | 29.77 | 51.82 | e | ||||||
1917 | 33.58 | 35.29 | 36.19 | 43.20 | 48.06 | 58.83 | 69.84 | 57.94 | 52.50 | 35.12 | n | 45.90 | 33.74 | 46.82 | a | |||||||||||
1918 | 31.35 | 34.64 | 33.97 | ----- | z | ----- | z | 64.38 | a | 62.07 | a | 58.26 | 56.77 | 49.06 | m | 37.46 | q | 34.23 | 46.96 | d | ||||||
1919 | 32.81 | 32.25 | 38.90 | 48.13 | ----- | z | 58.77 | 63.84 | 70.40 | p | 63.38 | f | 47.00 | f | 38.33 | 35.45 | 43.56 | d | ||||||||
1920 | 39.03 | 41.93 | 40.13 | 41.17 | 50.68 | 60.10 | 66.55 | 65.94 | ----- | z | ----- | z | 37.57 | 30.19 | 47.33 | b | ||||||||||
1921 | 31.94 | 37.11 | 44.48 | 43.47 | 49.74 | 66.83 | 73.27 | e | 70.75 | s | 56.50 | p | 57.29 | c | 35.52 | i | 30.90 | 48.34 | c | |||||||
1922 | 23.16 | 33.93 | 39.97 | 45.53 | 60.16 | 73.79 | a | 71.77 | ----- | z | 62.50 | n | 51.52 | 37.17 | 38.77 | 47.58 | b | |||||||||
1923 | 37.03 | b | 37.61 | 39.52 | 45.46 | f | 53.94 | 51.50 | 64.61 | 61.80 | a | 53.10 | 41.23 | ----- | z | 30.10 | 47.04 | b | ||||||||
1924 | ----- | z | ----- | z | ----- | z | 45.33 | x | 49.71 | 56.90 | 64.26 | 64.81 | 59.83 | 44.32 | 37.30 | 32.84 | 51.25 | d | ||||||||
1925 | 30.55 | 37.07 | a | 42.00 | 47.77 | 56.87 | 64.27 | 71.83 | a | 67.03 | a | 58.60 | 49.87 | 39.33 | 32.42 | 49.80 | ||||||||||
1926 | 29.55 | 38.26 | a | 43.65 | 50.20 | 51.55 | 62.80 | 66.40 | a | 64.55 | 62.10 | 52.70 | a | 41.00 | 35.30 | a | 49.84 | |||||||||
1927 | 36.65 | 39.41 | a | 39.97 | 46.33 | 50.67 | p | 60.57 | 71.77 | 67.65 | 61.70 | 47.84 | 43.60 | 32.20 | a | 49.79 | a | |||||||||
1928 | 33.28 | b | 35.45 | 40.32 | 43.41 | a | 57.10 | 60.00 | 68.87 | 64.55 | 61.07 | 50.48 | 39.27 | 32.61 | 48.87 | |||||||||||
1929 | 29.52 | 30.46 | 36.10 | 43.57 | 52.13 | 60.30 | 67.32 | 62.57 | a | 58.90 | 49.00 | 33.34 | a | 31.57 | a | 46.23 | ||||||||||
1930 | 31.90 | a | 36.48 | a | 38.00 | a | 46.57 | 49.00 | 59.97 | 67.06 | 65.35 | 56.10 | 45.32 | 37.24 | a | 30.03 | 46.92 | |||||||||
1931 | 30.35 | 37.68 | 38.52 | 48.07 | a | 53.48 | 60.43 | 70.26 | h | 63.84 | 61.30 | 47.61 | 35.70 | 27.97 | 45.91 | a | ||||||||||
1932 | 25.77 | 37.07 | b | 38.32 | 42.53 | 48.94 | 57.30 | 65.90 | 62.33 | j | 57.87 | 44.42 | 36.67 | 27.61 | 43.86 | a | ||||||||||
1933 | 27.40 | a | 26.54 | 35.84 | 39.87 | 45.90 | 58.73 | 69.23 | 66.20 | a | 60.27 | 49.58 | 38.33 | 31.84 | 45.81 | |||||||||||
1934 | 30.77 | 35.71 | 41.63 | a | 47.79 | a | 55.29 | 52.00 | 66.29 | 65.70 | a | 57.47 | 47.73 | a | 37.13 | 33.03 | 47.55 | |||||||||
1935 | 31.40 | a | 34.00 | 34.60 | a | 43.86 | a | 45.83 | a | 56.37 | 59.23 | 62.00 | 52.20 | 43.17 | a | 32.63 | 29.52 | 43.73 | ||||||||
1936 | 26.52 | 30.10 | 36.13 | 42.60 | 48.71 | 60.57 | 65.42 | 64.32 | 55.60 | 42.90 | 34.20 | 30.00 | a | 44.76 | ||||||||||||
1937 | 15.73 | a | 28.48 | c | 34.16 | 39.07 | 46.74 | 53.90 | a | 63.90 | 64.74 | 57.60 | 44.58 | 32.80 | 30.19 | 42.66 | ||||||||||
1938 | 28.81 | 31.30 | a | 32.74 | 40.89 | b | 47.58 | 54.17 | 60.90 | 60.42 | 54.80 | 42.74 | 27.10 | a | 29.94 | 42.62 | ||||||||||
1939 | 26.71 | 22.61 | 32.42 | 41.00 | 45.84 | 53.30 | 64.35 | 60.06 | 54.47 | 39.32 | 34.87 | 27.68 | 41.89 | |||||||||||||
1940 | 27.58 | 28.17 | 33.58 | 40.10 | a | 47.74 | 56.97 | 60.32 | 60.03 | 56.71 | b | 53.10 | ----- | z | 40.74 | 45.91 | a | |||||||||
1941 | 36.52 | b | 41.82 | 40.45 | 43.40 | 53.10 | 59.50 | 67.06 | 66.30 | a | 56.90 | 47.03 | 40.76 | a | 34.93 | a | 48.98 | |||||||||
1942 | 33.74 | h | 30.43 | 36.32 | 42.07 | 49.13 | 57.57 | 68.73 | i | 66.03 | 59.43 | 46.74 | 41.03 | 34.90 | a | 46.37 | b | |||||||||
1943 | 33.16 | 37.68 | c | 41.08 | f | 44.53 | 53.87 | 62.10 | 68.03 | 69.03 | 60.80 | 47.55 | 37.97 | 34.39 | 49.92 | a | ||||||||||
1944 | 31.19 | 32.83 | 33.13 | 36.47 | k | 52.26 | 56.97 | 65.06 | 65.58 | 59.17 | 48.94 | 36.43 | 32.45 | 46.73 | a | |||||||||||
1945 | 30.94 | 33.48 | a | 37.10 | 41.63 | 50.55 | 55.90 | 67.06 | 68.74 | 59.43 | 50.57 | a | 35.17 | 29.13 | 46.64 | |||||||||||
1946 | 30.74 | 30.71 | 37.74 | 50.33 | 51.45 | 59.90 | 70.61 | 69.52 | b | 66.50 | 52.68 | 38.59 | a | 42.63 | a | 50.12 | ||||||||||
1947 | 37.87 | a | 39.43 | 37.00 | 45.83 | 57.52 | 60.77 | 73.63 | a | 75.23 | 73.15 | c | 65.44 | m | 35.81 | d | 32.43 | a | 51.70 | a | ||||||
1948 | 31.93 | b | 33.68 | a | 35.97 | 49.47 | 52.13 | 60.33 | 72.71 | 67.86 | b | 63.07 | 51.31 | b | 34.31 | a | 32.00 | b | 48.73 | |||||||
1949 | 26.68 | 29.79 | 35.29 | 46.93 | 50.26 | 60.63 | 66.65 | 60.29 | 60.27 | 42.10 | 39.10 | 29.77 | 45.65 | |||||||||||||
1950 | 28.06 | 35.64 | 38.77 | 49.20 | 54.77 | 59.87 | 68.39 | 65.29 | 57.53 | 52.83 | a | 40.53 | 36.10 | a | 48.92 | |||||||||||
1951 | 30.84 | 34.64 | 37.42 | 45.57 | 53.13 | 55.40 | 70.68 | 64.45 | 58.27 | 47.71 | 38.57 | 31.71 | 47.36 | |||||||||||||
1952 | 31.30 | a | 32.00 | 33.68 | 45.37 | 51.71 | 57.53 | 64.35 | 66.90 | a | 62.67 | 51.29 | 36.50 | 32.52 | 47.15 | |||||||||||
1953 | 34.29 | 32.04 | 38.39 | 43.90 | 47.03 | 59.20 | 71.29 | 64.03 | 58.97 | 48.00 | 40.40 | 30.90 | 47.37 | |||||||||||||
1954 | 31.77 | 39.54 | 38.35 | 46.97 | 54.61 | 59.33 | 70.29 | 63.58 | 57.73 | 46.47 | a | 39.07 | 30.26 | 48.16 | ||||||||||||
1955 | 28.13 | 26.54 | 33.48 | 38.07 | 48.87 | a | 53.43 | 60.00 | 65.55 | 59.14 | a | 52.32 | 39.97 | 35.16 | 45.05 | |||||||||||
1956 | 35.03 | 29.59 | 37.81 | 44.87 | 55.23 | 64.37 | 68.32 | 62.94 | 63.90 | 49.90 | 36.34 | a | 33.07 | a | 48.45 | |||||||||||
1957 | 37.10 | 42.89 | a | 41.61 | 45.72 | a | 50.68 | 62.60 | 68.45 | 66.68 | 57.33 | 51.58 | 37.67 | 34.06 | 49.70 | |||||||||||
1958 | 32.17 | b | 39.00 | a | 37.83 | a | 43.97 | 56.42 | 62.00 | a | 69.10 | 68.94 | 62.27 | 53.10 | 40.57 | 35.52 | 50.07 | |||||||||
1959 | 34.03 | 35.29 | 40.10 | 49.60 | 51.52 | 67.53 | 72.03 | 69.42 | 60.38 | a | 51.00 | 41.60 | 37.71 | 50.85 | ||||||||||||
1960 | 30.74 | 33.79 | 42.90 | 45.53 | 51.39 | 62.40 | 67.42 | 70.13 | 62.93 | 51.32 | 40.63 | 33.45 | 49.39 | |||||||||||||
1961 | 36.10 | 38.04 | 39.39 | 47.47 | 52.16 | 64.10 | 70.81 | 69.55 | 59.77 | 49.23 | 40.10 | 35.06 | 50.15 | |||||||||||||
1962 | 34.32 | 38.43 | 35.48 | 48.77 | 51.77 | 59.27 | 68.23 | 67.71 | 63.53 | 51.26 | 42.60 | 37.26 | 49.89 | |||||||||||||
1963 | 30.74 | 39.71 | 39.45 | 44.00 | 53.58 | 57.97 | a | 72.06 | 68.32 | 62.70 | 53.32 | 43.20 | 32.90 | 49.83 | ||||||||||||
1964 | 30.19 | 30.41 | 37.81 | 44.87 | 51.03 | 59.03 | 72.03 | a | 67.84 | 61.93 | a | 52.48 | 37.20 | 33.87 | a | 48.22 | ||||||||||
1965 | 35.19 | 36.04 | 38.19 | 45.27 | 49.52 | 54.57 | 70.23 | 66.32 | 59.72 | a | 51.94 | 44.83 | 41.23 | 49.42 | ||||||||||||
1966 | ----- | z | 32.33 | j | 39.55 | 46.53 | 53.90 | 59.83 | 69.94 | 67.19 | 61.21 | a | 47.16 | 37.83 | 32.13 | 51.53 | b | |||||||||
1967 | 29.23 | 32.63 | a | 38.71 | 38.50 | 48.61 | 55.70 | 67.26 | 64.97 | a | 57.93 | 46.70 | a | 38.13 | 28.13 | 45.54 | ||||||||||
1968 | 31.19 | 40.03 | 40.33 | a | 45.97 | 54.60 | a | 67.00 | a | 71.00 | a | 65.61 | 57.37 | 46.77 | 37.50 | 28.87 | 48.85 | |||||||||
1969 | 38.97 | b | 34.18 | 36.30 | a | 44.60 | 52.45 | 57.43 | 67.65 | 69.32 | 60.62 | a | 44.94 | 37.47 | 33.61 | 48.13 | ||||||||||
1970 | 27.74 | 35.19 | a | 37.19 | 40.62 | a | 51.45 | 64.07 | 69.72 | b | 69.59 | b | 54.72 | a | 41.42 | 36.70 | 32.55 | 46.75 | ||||||||
1971 | 30.48 | 32.78 | a | 37.42 | 42.66 | a | 48.71 | 56.10 | 67.81 | 65.17 | b | 55.83 | 40.16 | 31.07 | 30.00 | 44.85 | ||||||||||
1972 | 29.26 | 33.79 | 43.77 | a | 45.21 | a | 51.16 | 59.53 | 67.77 | 65.37 | a | 60.37 | 52.52 | 35.62 | a | 32.16 | 48.04 | |||||||||
1973 | 29.71 | 36.11 | 35.23 | 41.45 | a | 52.52 | 60.07 | 67.77 | 66.71 | 58.10 | 47.58 | 34.03 | 31.48 | 46.73 | ||||||||||||
1974 | 31.13 | 30.50 | 39.97 | 42.40 | 52.23 | a | 63.97 | 68.68 | 62.74 | 61.13 | 51.42 | 39.18 | b | 27.77 | 47.59 | |||||||||||
1975 | 28.87 | 31.36 | 35.42 | 36.37 | 49.32 | 56.21 | a | 69.10 | 63.97 | 59.60 | 45.58 | 33.72 | a | 30.19 | 44.98 | |||||||||||
1976 | 30.13 | 36.00 | a | 35.84 | 37.69 | a | 49.42 | 53.78 | c | 65.17 | a | 62.43 | a | 56.10 | 45.55 | 34.97 | 33.39 | 45.04 | ||||||||
1977 | 32.10 | 32.29 | 32.23 | 40.57 | 50.26 | 59.77 | 69.42 | 69.10 | 60.67 | 50.71 | 37.90 | 34.23 | 47.43 | |||||||||||||
1978 | 33.43 | a | 33.79 | 39.65 | 39.57 | 47.94 | 58.83 | a | 67.00 | 63.39 | 61.00 | 52.87 | 39.63 | 29.23 | 47.19 | |||||||||||
1979 | 30.20 | a | 27.96 | 36.97 | 41.97 | 50.29 | 59.40 | 65.94 | 64.19 | 63.27 | 50.00 | 35.13 | 34.03 | a | 46.61 | |||||||||||
1980 | 37.13 | 40.17 | 39.23 | 43.07 | 46.13 | 57.40 | 70.03 | 66.97 | 60.43 | 48.61 | 39.00 | 37.48 | 48.80 | |||||||||||||
1981 | 36.42 | 36.46 | 39.19 | 46.90 | 53.23 | 64.60 | 70.90 | 68.52 | 61.53 | 48.77 | 40.10 | 34.84 | 50.12 | |||||||||||||
1982 | 32.73 | i | 38.38 | g | 39.30 | h | 43.46 | b | 51.37 | a | 56.03 | 67.41 | b | 69.97 | 61.17 | a | 44.73 | a | 40.52 | g | 34.33 | d | 53.56 | d | ||
1983 | 34.11 | d | 37.40 | c | 40.40 | a | 39.57 | b | 49.90 | b | 56.52 | a | 67.74 | 66.97 | 64.60 | 51.07 | c | 39.34 | a | 35.10 | 48.56 | |||||
1984 | 35.00 | 31.93 | 37.83 | a | 43.72 | a | 54.06 | 59.62 | a | 69.97 | 66.90 | 63.83 | a | 45.84 | 37.73 | 34.04 | d | 48.37 | ||||||||
1985 | 33.07 | a | 33.50 | b | 39.00 | a | 46.87 | 52.52 | 61.88 | f | 69.69 | b | 65.17 | b | 55.07 | b | 48.81 | 37.10 | 32.63 | a | 46.67 | a | ||||
1986 | 32.42 | e | ----- | z | 41.81 | 44.79 | a | 48.45 | 60.57 | 65.48 | 68.77 | 55.14 | a | 48.07 | c | 38.28 | a | 32.43 | a | 48.75 | a | |||||
1987 | 28.67 | a | 35.08 | b | 37.64 | c | 45.43 | 54.77 | 59.63 | 62.77 | 65.57 | a | 58.57 | 53.71 | 39.57 | 32.00 | b | 47.78 | ||||||||
1988 | 33.92 | e | 36.48 | b | 37.87 | a | 45.80 | 50.70 | a | 62.45 | a | 68.13 | 67.35 | 55.73 | 54.47 | a | 39.47 | 32.04 | c | 48.70 | ||||||
1989 | 33.71 | c | 37.00 | a | 42.00 | a | 46.93 | b | 52.83 | a | 59.14 | a | 70.68 | 64.71 | 60.07 | 48.13 | a | 40.93 | a | 31.75 | c | 48.99 | ||||
1990 | 31.32 | c | 34.77 | b | 40.90 | b | 48.77 | 49.71 | 62.73 | 68.50 | a | 64.61 | 62.54 | b | 48.73 | a | 40.14 | a | 30.87 | a | 48.63 | |||||
1991 | 32.97 | 38.42 | b | 38.13 | a | 41.67 | 49.30 | a | 55.60 | 67.93 | a | 66.70 | a | 62.50 | 51.31 | b | 37.62 | a | 35.57 | a | 48.14 | |||||
1992 | 31.10 | b | 38.81 | b | 39.70 | a | 43.47 | 53.32 | 54.83 | 63.48 | 65.32 | 56.33 | 46.17 | a | 32.53 | 31.68 | 46.40 | |||||||||
1993 | 36.79 | c | 36.96 | a | 39.93 | b | 42.83 | a | 52.37 | a | 56.33 | 64.81 | 65.97 | 55.90 | 49.30 | a | 34.93 | b | 28.21 | b | 47.03 | |||||
1994 | 29.10 | 29.59 | a | 38.80 | a | 43.20 | 47.35 | 60.03 | 64.84 | 69.87 | 60.50 | 45.57 | a | 34.34 | a | 33.07 | d | 46.36 | ||||||||
1995 | 33.77 | 38.04 | b | 38.55 | 40.53 | 47.45 | 55.23 | 63.39 | 69.29 | 59.90 | 45.10 | 40.52 | a | 31.07 | a | 46.90 | ||||||||||
1996 | 27.60 | a | 39.32 | a | 38.10 | 43.53 | 51.48 | 59.63 | 69.61 | 66.90 | 59.03 | 47.97 | a | 37.55 | a | 32.03 | 47.73 | |||||||||
1997 | 32.83 | a | 32.21 | 39.19 | 43.45 | a | 53.97 | 51.48 | c | 65.45 | 68.03 | 64.27 | 45.42 | 37.40 | 30.48 | 47.02 | ||||||||||
1998 | 32.39 | 33.56 | a | 38.26 | 38.03 | a | 46.19 | 52.40 | 66.97 | 68.06 | 60.31 | a | 46.27 | a | 36.77 | 32.43 | a | 45.97 | ||||||||
1999 | 30.93 | a | 33.11 | a | 36.65 | 41.41 | a | 48.47 | a | 58.93 | 68.45 | 67.74 | 60.17 | 46.23 | 37.43 | 29.58 | 46.59 | |||||||||
2000 | 30.93 | b | 35.89 | a | 39.00 | a | 44.90 | 51.97 | 61.80 | 67.03 | 68.73 | a | 60.23 | 49.80 | a | 32.07 | a | 30.84 | 47.77 | |||||||
2001 | 32.07 | a | 32.46 | 38.03 | 42.73 | 52.90 | 58.97 | 67.74 | 67.19 | 58.43 | 49.55 | 41.10 | 29.26 | 47.54 | ||||||||||||
2002 | 30.43 | a | 30.67 | a | 34.81 | 46.27 | 48.45 | 56.93 | 69.29 | 65.39 | 59.40 | 46.84 | 37.73 | 30.81 | 46.42 | |||||||||||
2003 | 36.27 | a | 35.65 | b | 38.06 | 38.80 | 50.19 | 56.90 | a | 68.06 | 67.25 | c | 58.97 | 50.21 | b | 36.40 | 29.81 | 47.21 | ||||||||
2004 | 32.90 | 31.07 | 41.82 | c | 41.79 | a | 48.30 | a | 53.75 | b | 62.50 | a | 63.34 | b | 56.34 | a | 47.59 | b | 38.10 | a | 32.76 | b | 45.86 | |||
2005 | 35.72 | b | 38.79 | 37.81 | 40.24 | a | 49.13 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 40.34 | g | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 31.70 | 34.66 | 38.21 | 43.89 | 51.09 | 59.04 | 67.62 | 65.96 | 59.47 | 48.40 | 37.77 | 32.55 | 47.43 | |||||||||||||
S.D. | 3.60 | 3.92 | 2.85 | 3.15 | 2.92 | 3.84 | 3.08 | 2.89 | 3.26 | 3.52 | 3.06 | 2.94 | 1.91 | |||||||||||||
SKEW | -0.87 | -0.30 | 0.40 | -0.09 | 0.40 | 0.64 | -0.51 | -0.31 | 0.64 | -0.28 | -0.34 | 0.91 | -0.69 | |||||||||||||
MAX | 39.03 | 42.89 | 48.62 | 50.33 | 60.16 | 73.79 | 73.63 | 75.23 | 73.15 | 57.29 | 45.90 | 42.63 | 50.85 | |||||||||||||
MIN | 15.73 | 22.61 | 32.23 | 36.37 | 45.83 | 51.48 | 59.23 | 57.94 | 52.20 | 39.32 | 27.10 | 27.61 | 41.89 | |||||||||||||
YRS | 85 | 86 | 87 | 85 | 87 | 88 | 87 | 85 | 84 | 83 | 84 | 90 | 68 |