YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1910 | ----- | z | ----- | z | ----- | z | ----- | z | 63.33 | g | 64.43 | 76.83 | a | 75.54 | g | 69.83 | a | 58.66 | b | 42.67 | u | 39.43 | h | 67.44 | h | |
1911 | 40.52 | h | 40.62 | b | 49.12 | n | 52.20 | e | 57.18 | i | 65.12 | e | 75.12 | g | 75.33 | p | 67.81 | i | 52.73 | e | 41.46 | b | 32.73 | a | 47.48 | f |
1912 | 36.16 | l | 40.04 | d | 46.27 | a | 51.07 | c | 59.24 | b | 66.93 | b | 71.62 | j | ----- | z | 63.04 | c | 54.74 | 45.23 | d | 34.11 | c | 51.19 | c | |
1913 | 31.71 | 41.69 | b | 42.23 | 51.53 | 57.42 | 64.10 | 71.29 | 75.03 | 68.14 | b | 52.97 | 49.34 | a | 38.23 | 53.64 | ||||||||||
1914 | ----- | z | 42.00 | a | 48.96 | d | ----- | z | 60.26 | 66.73 | 74.29 | ----- | z | 67.93 | 56.00 | a | 47.80 | 38.13 | a | 55.79 | c | |||||
1915 | 38.19 | ----- | z | 46.38 | b | 53.77 | 55.81 | e | 64.82 | b | 71.29 | 71.22 | m | 63.57 | i | 52.93 | b | 41.71 | b | 36.13 | 51.23 | c | ||||
1916 | 39.68 | c | 45.21 | a | 51.10 | b | 54.30 | c | 58.33 | a | 66.31 | d | 74.47 | n | 70.30 | d | 65.85 | c | 48.56 | f | 38.15 | c | 32.52 | d | 52.17 | b |
1917 | ----- | z | 41.42 | b | 41.00 | 50.00 | 53.88 | e | 65.37 | 77.65 | k | 76.67 | s | 67.59 | m | 56.13 | 42.07 | a | 36.06 | 48.24 | d | |||||
1918 | 34.61 | 39.57 | 48.81 | 52.89 | c | 55.93 | c | 71.48 | c | 74.32 | l | 76.62 | o | 66.67 | i | 57.37 | a | 44.24 | e | 34.06 | 48.77 | c | ||||
1919 | 33.10 | 39.61 | 44.24 | b | 53.63 | 59.58 | g | 64.70 | g | 77.62 | w | 72.80 | u | 68.00 | o | 49.58 | e | 42.07 | 37.29 | 42.79 | e | |||||
1920 | 41.07 | d | 47.16 | j | 43.68 | 51.67 | 58.03 | 64.20 | 73.42 | l | 73.10 | u | 61.00 | l | 52.42 | ----- | z | 33.81 | 49.27 | e | ||||||
1921 | 36.08 | e | 41.40 | c | 49.21 | b | 51.07 | a | 58.13 | a | 67.43 | b | 78.67 | g | 74.58 | l | 66.50 | l | 57.94 | 43.11 | c | 41.90 | 49.58 | c | ||
1922 | 35.55 | b | ----- | z | 44.38 | b | 48.46 | b | 59.93 | c | 69.03 | a | 76.45 | i | 77.95 | l | 69.27 | s | 55.45 | b | 41.37 | 41.61 | 49.47 | d | ||
1923 | 39.90 | 42.75 | 46.19 | 54.89 | b | 60.78 | h | 61.29 | b | 74.21 | c | 73.61 | 69.09 | g | 51.69 | b | 46.93 | b | 40.97 | 53.24 | b | |||||
1924 | 33.90 | 41.45 | 44.50 | a | 51.34 | a | 59.67 | a | 70.76 | a | 73.24 | f | 74.11 | d | 69.75 | j | 50.26 | d | 42.77 | d | 36.48 | 50.52 | b | |||
1925 | 33.19 | 44.32 | c | 47.03 | b | 53.15 | d | 60.52 | f | 66.83 | 76.52 | h | 72.90 | 71.17 | a | 68.62 | e | 58.84 | e | 46.86 | i | 57.34 | c | |||
1926 | 35.19 | 44.86 | 51.06 | 58.64 | e | 60.13 | a | 67.33 | 72.38 | g | 73.33 | d | 62.91 | h | 55.03 | a | 44.33 | 40.84 | 53.08 | b | ||||||
1927 | 39.77 | 44.27 | b | 44.90 | 50.87 | 58.13 | 66.50 | 74.24 | b | 75.83 | a | 63.84 | e | 53.74 | 47.61 | b | 39.10 | 54.90 | ||||||||
1928 | 38.19 | 40.93 | 48.83 | a | 50.73 | 60.42 | 66.63 | 72.96 | c | 71.78 | d | 63.71 | f | 55.48 | d | 44.27 | h | 36.48 | 54.25 | b | ||||||
1929 | 35.03 | 38.36 | 46.83 | a | 48.97 | 58.77 | a | 64.47 | 74.74 | d | 78.30 | a | 65.00 | 56.38 | b | 39.80 | 39.04 | c | 53.81 | |||||||
1930 | 38.77 | a | 43.27 | b | 47.57 | a | 56.82 | b | 56.10 | 64.52 | a | 72.96 | h | 72.09 | i | 64.44 | n | 51.72 | f | 43.89 | b | 31.80 | a | 47.84 | d | |
1931 | 40.00 | p | 47.14 | 49.65 | 58.20 | 65.48 | 53.43 | 75.71 | 79.29 | 70.90 | a | 59.35 | 46.03 | 38.68 | 58.53 | a | ||||||||||
1932 | 36.84 | 46.59 | 50.19 | 54.90 | 62.39 | 67.50 | 76.06 | 75.74 | 70.77 | 56.97 | 46.70 | 36.58 | 56.77 | |||||||||||||
1933 | ----- | z | ----- | z | 49.16 | 52.37 | 57.06 | 66.40 | 77.00 | 75.65 | 69.77 | 62.52 | 44.43 | 38.39 | 59.27 | b | ||||||||||
1934 | 38.00 | 46.93 | 54.61 | 58.44 | e | 68.32 | ----- | z | 77.16 | 80.91 | h | 71.77 | 60.97 | 48.33 | 42.90 | 56.74 | b | |||||||||
1935 | 40.41 | b | 47.57 | 47.35 | 55.70 | 59.90 | 70.37 | 75.87 | 78.84 | 73.53 | 59.26 | 41.43 | 41.26 | 57.63 | ||||||||||||
1936 | 39.61 | 46.55 | 52.55 | ----- | z | 65.97 | 73.80 | 81.23 | 79.90 | 68.07 | 57.97 | 45.70 | 38.93 | a | 59.12 | a | ||||||||||
1937 | 32.35 | 38.29 | 43.03 | 51.13 | 63.00 | 70.10 | 78.81 | 76.84 | 74.97 | a | 61.48 | 48.77 | 44.68 | 56.95 | ||||||||||||
1938 | 38.77 | 43.29 | 50.06 | 53.73 | 60.58 | 67.83 | 75.39 | 76.48 | 72.60 | 56.55 | 38.47 | 42.16 | 56.33 | |||||||||||||
1939 | 38.68 | 38.93 | 47.55 | 54.17 | ----- | z | 65.07 | 72.65 | 80.52 | 70.47 | 56.90 | 49.80 | 43.16 | 56.17 | a | |||||||||||
1940 | 43.45 | 45.93 | 50.23 | 55.77 | 64.58 | 71.63 | 69.94 | 76.10 | 69.80 | 59.71 | 43.00 | 44.45 | 57.88 | |||||||||||||
1941 | 43.16 | 46.57 | 49.32 | 53.37 | 66.90 | 67.40 | 78.10 | 74.58 | 63.83 | 57.10 | 48.20 | 43.06 | 57.63 | |||||||||||||
1942 | 40.32 | 42.67 | a | 46.19 | 54.50 | 59.71 | 66.67 | 75.06 | 77.77 | 68.03 | ----- | z | ----- | z | 41.52 | 57.24 | b | |||||||||
1943 | 40.06 | 44.82 | 54.61 | 58.30 | 64.00 | 67.36 | b | 75.96 | h | 78.26 | 72.50 | 57.97 | 42.50 | 42.19 | 56.60 | a | ||||||||||
1944 | 38.50 | a | 40.90 | 45.23 | 51.80 | 59.35 | 64.10 | 71.13 | 74.68 | 67.50 | 58.10 | 46.23 | 38.03 | 54.63 | ||||||||||||
1945 | 38.61 | 41.46 | 45.23 | 52.43 | b | 59.42 | 66.30 | 79.00 | 78.00 | 73.00 | 61.26 | 45.83 | 39.65 | 56.68 | ||||||||||||
1946 | 40.06 | 38.68 | 48.52 | 58.47 | 61.71 | 70.10 | 78.65 | 79.55 | 72.23 | 54.03 | 44.93 | 43.84 | 57.56 | |||||||||||||
1947 | 35.73 | a | 45.81 | a | 51.13 | 56.40 | 64.06 | 68.53 | 77.06 | 76.90 | b | 75.17 | 61.15 | d | 42.92 | e | 39.06 | 57.83 | ||||||||
1948 | 37.35 | 41.79 | 45.39 | 56.21 | a | 61.74 | 68.67 | 76.13 | 75.68 | 71.33 | 60.90 | 42.47 | 35.43 | a | 56.09 | |||||||||||
1949 | 33.71 | 39.18 | 48.23 | 58.30 | 61.52 | 71.53 | 77.06 | 75.35 | 76.37 | 57.55 | 50.07 | 37.58 | 57.20 | |||||||||||||
1950 | 37.00 | 45.11 | 51.74 | 58.13 | 60.13 | 68.07 | 78.26 | 75.29 | 68.97 | 61.77 | 50.57 | 44.67 | a | 58.31 | ||||||||||||
1951 | 39.68 | 43.32 | 47.71 | 56.33 | 62.35 | 67.07 | 77.71 | 76.77 | 71.10 | 60.77 | 49.17 | 40.30 | a | 57.69 | ||||||||||||
1952 | 38.42 | 42.69 | 46.03 | 56.00 | 66.32 | 66.80 | 77.26 | 79.55 | 74.13 | 63.45 | 46.37 | 40.65 | 58.14 | |||||||||||||
1953 | 42.77 | 40.89 | 46.68 | 54.13 | 57.03 | 65.77 | 80.16 | 76.19 | 67.27 | 57.39 | 47.93 | 36.26 | 56.04 | |||||||||||||
1954 | 38.48 | 45.96 | 48.19 | 58.43 | 63.10 | 68.77 | 80.68 | 75.10 | 70.57 | 59.39 | 49.03 | 40.06 | 58.15 | |||||||||||||
1955 | 38.42 | 40.29 | 48.84 | 53.30 | 59.61 | 67.37 | 75.39 | 79.71 | 70.53 | 60.45 | 47.67 | 42.90 | 57.04 | |||||||||||||
1956 | 42.03 | 38.90 | 46.35 | 53.13 | 60.26 | 68.63 | 74.23 | 69.94 | 73.43 | 61.90 | a | 41.87 | 36.77 | a | 55.62 | |||||||||||
1957 | 42.30 | a | 48.89 | 51.23 | 55.83 | 59.87 | h | 72.43 | 79.94 | 78.76 | b | 70.87 | 60.42 | 46.23 | 41.90 | 58.98 | a | |||||||||
1958 | 40.77 | 46.70 | a | 45.61 | 51.73 | 63.26 | 67.20 | 70.94 | 78.55 | 70.60 | 60.61 | 44.90 | 39.68 | 56.71 | ||||||||||||
1959 | 39.42 | 40.68 | 46.42 | 54.30 | 56.81 | 68.77 | 79.06 | 75.06 | 65.50 | 55.55 | 45.23 | 41.13 | 55.66 | |||||||||||||
1960 | 35.61 | 40.83 | 48.42 | 53.50 | 57.58 | 69.03 | 74.29 | 74.32 | 70.60 | 58.65 | 45.47 | 36.39 | 55.39 | |||||||||||||
1961 | 38.81 | 42.61 | 46.29 | 51.10 | 56.90 | 67.87 | 74.55 | 76.45 | 65.00 | 55.13 | 44.30 | 39.97 | 54.91 | |||||||||||||
1962 | 37.84 | 43.64 | 42.13 | 54.10 | 55.32 | 64.17 | 71.29 | 74.87 | 70.23 | 56.90 | 48.33 | 41.16 | 55.00 | |||||||||||||
1963 | 35.61 | 47.21 | 45.32 | 49.87 | 59.42 | 63.93 | 73.10 | 75.23 | 70.13 | 61.29 | 47.33 | 35.45 | 55.33 | |||||||||||||
1964 | 33.55 | 38.00 | 43.81 | 50.53 | 56.52 | 64.07 | 75.68 | 75.06 | 64.90 | 61.10 | 43.83 | 39.77 | 53.90 | |||||||||||||
1965 | 39.65 | 41.00 | 44.97 | 52.60 | 57.19 | 60.47 | 72.26 | 73.29 | 63.37 | 55.39 | 50.70 | 40.32 | 54.27 | |||||||||||||
1966 | 36.61 | 39.14 | 47.06 | 54.20 | 61.06 | 66.57 | 74.55 | 76.74 | 68.23 | 55.03 | 45.73 | 39.16 | 55.34 | |||||||||||||
1967 | 36.84 | 41.64 | 48.71 | 47.77 | 58.87 | 63.33 | 77.06 | 77.65 | 70.00 | 57.71 | 50.77 | 37.84 | 55.68 | |||||||||||||
1968 | 37.74 | 48.55 | 48.10 | 46.80 | 57.97 | 64.73 | 74.68 | 71.87 | 65.33 | 55.29 | 48.50 | 33.58 | 54.43 | |||||||||||||
1969 | 44.74 | 41.21 | 45.87 | 51.57 | 59.52 | 63.27 | 76.06 | 78.73 | a | 71.77 | 53.45 | 48.50 | 41.00 | 56.31 | ||||||||||||
1970 | 37.68 | 43.68 | 46.00 | 48.37 | 57.03 | 65.73 | 76.39 | 78.65 | 65.67 | 53.87 | 45.33 | 38.97 | 54.78 | |||||||||||||
1971 | 35.90 | 40.11 | 44.65 | 48.70 | 57.00 | 63.27 | 74.19 | 78.29 | 68.23 | 52.45 | 43.43 | 37.68 | 53.66 | |||||||||||||
1972 | 33.39 | 41.10 | 49.94 | 52.40 | 58.77 | 67.47 | 75.42 | 73.10 | 66.80 | 59.29 | 42.10 | 37.16 | 54.74 | |||||||||||||
1973 | 36.35 | 44.86 | 44.84 | 49.80 | 59.00 | 66.60 | 72.58 | 73.26 | 63.20 | 55.10 | 45.70 | 37.71 | 54.08 | |||||||||||||
1974 | 41.23 | 38.96 | 47.29 | 52.17 | 57.65 | 67.30 | 74.26 | 70.84 | 71.37 | 58.61 | 44.67 | 35.84 | 55.01 | |||||||||||||
1975 | 35.29 | 39.39 | 45.00 | 47.63 | 56.74 | 64.33 | 74.03 | 71.74 | 70.53 | 54.74 | 42.86 | a | 37.42 | 53.31 | ||||||||||||
1976 | 35.81 | 43.59 | 43.52 | 48.83 | 58.65 | 64.10 | 74.77 | 69.26 | 68.43 | 56.94 | 45.47 | 36.55 | 53.83 | |||||||||||||
1977 | 39.29 | 40.82 | 42.45 | 50.87 | 54.97 | 67.07 | 74.52 | 75.58 | 68.37 | 58.90 | 45.87 | 43.84 | 55.21 | |||||||||||||
1978 | 43.71 | 43.32 | 51.13 | 52.33 | 59.10 | 69.97 | 75.19 | 73.32 | 66.77 | 62.32 | 47.30 | 36.55 | 56.75 | |||||||||||||
1979 | 38.58 | 41.14 | 46.35 | 51.47 | 58.81 | 67.27 | 73.42 | 72.06 | 71.73 | 59.48 | 42.60 | 38.94 | 55.15 | |||||||||||||
1980 | 45.23 | 46.97 | 46.16 | 51.03 | 55.87 | 64.77 | 75.68 | 73.16 | 67.00 | 56.90 | 43.80 | 41.94 | 55.71 | |||||||||||||
1981 | 44.81 | 42.82 | 47.55 | 54.03 | 59.03 | 70.20 | 76.35 | 77.29 | 71.00 | 56.19 | 48.43 | 40.90 | 57.38 | |||||||||||||
1982 | 39.68 | 45.82 | 47.48 | 52.23 | 57.58 | 62.40 | 72.52 | 76.48 | 67.20 | 53.97 | 45.13 | 40.45 | 55.08 | |||||||||||||
1983 | 41.10 | 44.96 | 50.16 | 49.37 | 58.84 | 63.20 | 73.26 | 75.83 | a | 75.63 | 61.42 | 49.23 | 44.10 | 57.26 | ||||||||||||
1984 | 41.48 | 42.03 | 46.65 | 51.00 | 61.74 | 66.17 | ----- | z | 77.39 | 73.27 | 56.71 | 45.93 | 42.39 | 54.98 | a | |||||||||||
1985 | 39.61 | 39.96 | 46.90 | 53.93 | 59.13 | 67.73 | 76.71 | 73.48 | 65.10 | 58.26 | 45.67 | 40.52 | 55.58 | |||||||||||||
1986 | 42.87 | 46.18 | 49.45 | 54.13 | 57.77 | 67.27 | 71.84 | 77.42 | 63.63 | 55.97 | 47.23 | 39.39 | 56.10 | |||||||||||||
1987 | 36.61 | 41.82 | 46.00 | 55.07 | 60.03 | 66.47 | 69.84 | 74.00 | 67.87 | 63.06 | 47.67 | 38.16 | 55.55 | |||||||||||||
1988 | 37.84 | 43.97 | 46.58 | 52.10 | 58.58 | 65.37 | 74.94 | 74.68 | 66.30 | 62.94 | 48.17 | 38.52 | 55.83 | |||||||||||||
1989 | 37.19 | 43.14 | 50.87 | 57.40 | 60.65 | 65.70 | 74.81 | 72.81 | 67.67 | 58.13 | 45.40 | 37.55 | 55.94 | |||||||||||||
1990 | 37.26 | 39.32 | 47.65 | 56.27 | 58.16 | 67.43 | 76.39 | 73.61 | 70.67 | 56.90 | 46.63 | 34.77 | 55.42 | |||||||||||||
1991 | 39.87 | 44.93 | 45.48 | 52.10 | 57.10 | 63.13 | 71.55 | 73.19 | 71.10 | 62.26 | 46.37 | 42.16 | 55.77 | |||||||||||||
1992 | 38.74 | 48.34 | 49.16 | 57.17 | 63.29 | 66.20 | 74.42 | 77.16 | 71.10 | 60.03 | 43.90 | 38.42 | 57.33 | |||||||||||||
1993 | 43.19 | 45.71 | 50.29 | 54.67 | 62.26 | 67.33 | 70.29 | 74.48 | 66.97 | 60.58 | 45.03 | 38.26 | 56.59 | |||||||||||||
1994 | 38.52 | 40.89 | 49.94 | 54.40 | 57.94 | 69.70 | 74.03 | 78.81 | 71.10 | 57.55 | 42.47 | 40.10 | 56.29 | |||||||||||||
1995 | 44.26 | 49.11 | 50.52 | 51.40 | 56.84 | 62.73 | 72.65 | 78.13 | 73.50 | 57.06 | 50.03 | 42.13 | 57.36 | |||||||||||||
1996 | 39.32 | 47.93 | 48.03 | 53.43 | 59.84 | 68.07 | 79.61 | 80.52 | 72.00 | 60.29 | 49.30 | 41.94 | 58.36 | |||||||||||||
1997 | 45.19 | 42.75 | 47.94 | 55.13 | 65.52 | 66.43 | 71.52 | 80.52 | 76.50 | 57.77 | 50.57 | 40.23 | 58.34 | |||||||||||||
1998 | 41.84 | 46.04 | 48.00 | 51.33 | 58.65 | 65.90 | 77.52 | 79.74 | 71.60 | 56.45 | 46.10 | 38.68 | 56.82 | |||||||||||||
1999 | 39.84 | 42.50 | 45.26 | 48.07 | a | 56.52 | 62.43 | 73.30 | a | 71.77 | 69.37 | 56.90 | 47.63 | 39.29 | 54.41 | |||||||||||
2000 | 42.32 | 45.55 | 46.68 | 55.33 | 62.06 | 69.43 | 71.58 | 76.48 | 68.17 | 56.97 | 40.27 | 40.74 | 56.30 | |||||||||||||
2001 | 39.65 | 43.00 | b | 50.52 | 53.00 | 63.03 | 69.50 | 73.32 | 76.84 | 70.33 | 61.10 | 53.27 | 37.77 | 57.61 | ||||||||||||
2002 | 39.26 | 40.14 | 45.97 | 54.50 | 59.48 | 67.80 | 76.03 | 72.77 | 69.97 | 57.26 | 47.97 | 40.55 | 55.97 | |||||||||||||
2003 | 44.32 | 46.39 | 49.45 | 52.10 | 61.10 | 65.93 | 77.35 | 78.97 | 72.83 | 64.81 | 47.23 | 39.81 | 58.36 | |||||||||||||
2004 | 40.81 | 41.83 | 54.39 | 57.20 | 61.52 | 66.57 | 74.90 | 75.71 | 68.93 | a | 58.61 | 46.07 | 41.97 | 57.37 | ||||||||||||
2005 | 45.90 | a | 48.43 | 51.16 | 52.87 | 61.42 | 67.67 | 77.65 | 78.87 | ----- | z | 61.03 | a | 49.70 | 40.90 | a | 57.78 | a | ||||||||
2006 | 40.93 | a | 43.64 | 47.48 | 53.90 | 62.07 | a | 72.87 | 82.10 | 76.32 | 70.00 | 58.65 | 49.67 | 38.84 | 58.04 | |||||||||||
2007 | 36.82 | c | 44.54 | b | 50.45 | b | 53.39 | g | ----- | z | 67.95 | i | 78.32 | i | 79.45 | 70.04 | c | ----- | z | ----- | z | ----- | z | 56.26 | g | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 38.87 | 43.10 | 47.59 | 53.18 | 59.76 | 66.64 | 75.17 | 75.84 | 69.52 | 57.86 | 45.95 | 39.19 | 56.10 | |||||||||||||
S.D. | 3.18 | 2.89 | 2.73 | 2.82 | 2.87 | 2.89 | 2.71 | 2.69 | 3.16 | 3.29 | 3.27 | 2.87 | 1.38 | |||||||||||||
SKEW | 0.06 | 0.23 | 0.21 | 0.05 | 0.69 | -0.74 | 0.23 | -0.24 | -0.11 | 0.13 | 0.41 | -0.32 | -0.09 | |||||||||||||
MAX | 45.90 | 49.11 | 54.61 | 58.64 | 68.32 | 73.80 | 82.10 | 80.52 | 76.50 | 68.62 | 58.84 | 44.68 | 58.36 | |||||||||||||
MIN | 31.71 | 38.00 | 41.00 | 46.80 | 53.88 | 53.43 | 69.84 | 69.26 | 63.04 | 49.58 | 38.15 | 31.80 | 53.31 | |||||||||||||
YRS | 91 | 93 | 96 | 94 | 90 | 95 | 82 | 85 | 84 | 94 | 93 | 95 | 69 |