YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1915 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 73.78 | g | 65.84 | l | 54.73 | 48.36 | c | 51.55 | j | |
1916 | 45.90 | g | 56.88 | 63.94 | e | 64.11 | g | 67.65 | 78.20 | 84.26 | 81.39 | 77.60 | i | ----- | z | ----- | z | 40.87 | 67.60 | e | ||||||
1917 | 44.20 | a | 48.46 | 52.26 | 59.23 | 63.92 | 78.80 | 84.55 | 77.81 | 71.98 | 56.15 | n | 60.77 | 52.45 | 63.13 | a | ||||||||||
1918 | 45.69 | 48.36 | 49.55 | ----- | z | ----- | z | ----- | z | 78.06 | v | 74.44 | 74.59 | a | 67.56 | n | 44.85 | q | 40.50 | u | 58.52 | g | ||||
1919 | 45.71 | 43.68 | 51.08 | 63.98 | ----- | z | 77.57 | 76.24 | b | 81.89 | q | 78.94 | f | 61.70 | f | ----- | z | 48.63 | 58.13 | e | ||||||
1920 | 49.81 | 53.40 | 53.71 | 56.93 | 68.73 | 77.73 | 84.40 | a | 81.37 | ----- | z | ----- | z | 54.70 | 46.60 | a | 62.74 | b | ||||||||
1921 | 48.00 | a | 53.70 | 61.28 | a | 62.12 | 68.63 | 84.03 | 86.86 | f | 85.15 | u | 76.21 | p | 74.62 | e | 54.95 | j | 49.37 | a | 62.72 | d | ||||
1922 | 44.07 | a | 51.00 | d | 54.89 | 61.68 | 75.82 | 87.50 | a | 86.81 | ----- | z | 79.03 | n | 67.34 | 52.83 | f | 49.39 | 64.28 | c | ||||||
1923 | 50.28 | b | 50.54 | 53.42 | a | 59.58 | f | 71.89 | 73.93 | 83.90 | 80.13 | a | 72.21 | a | 60.37 | ----- | z | 42.55 | 63.92 | b | ||||||
1924 | ----- | z | ----- | z | ----- | z | 62.10 | y | 67.26 | 77.83 | 79.05 | 80.16 | ----- | z | ----- | z | 52.40 | y | 43.84 | 69.63 | g | |||||
1925 | 44.66 | 53.11 | a | 58.29 | 63.93 | 73.66 | 80.10 | 88.25 | a | 82.47 | a | 74.65 | 63.50 | 52.97 | 46.82 | 65.20 | ||||||||||
1926 | 44.15 | 52.78 | a | 57.06 | 61.62 | 68.42 | 81.45 | 83.75 | a | 81.06 | 77.07 | 68.83 | a | 56.97 | 45.78 | a | 64.91 | |||||||||
1927 | 50.60 | 52.00 | b | 53.69 | 60.57 | 67.57 | q | 77.65 | 87.19 | 81.84 | 76.12 | 64.85 | 58.63 | 43.75 | a | 64.26 | a | |||||||||
1928 | 47.41 | b | 49.22 | 57.13 | 60.98 | a | 73.73 | 78.85 | 85.68 | 81.71 | 78.72 | 68.02 | 53.97 | 45.69 | 65.09 | |||||||||||
1929 | 42.85 | 45.32 | 52.82 | 59.57 | 70.61 | 79.32 | 84.47 | 80.07 | b | 75.45 | a | 68.77 | 50.81 | a | 49.58 | a | 63.30 | |||||||||
1930 | 43.93 | a | 53.06 | a | 53.48 | a | 64.02 | 64.66 | 79.15 | 83.29 | 79.40 | k | 74.93 | 63.89 | 53.41 | a | 46.08 | 61.81 | a | |||||||
1931 | 46.08 | 50.07 | 56.08 | 64.78 | a | 71.63 | 78.60 | 87.20 | h | 79.98 | 76.05 | 64.76 | 48.35 | 40.39 | 61.52 | a | ||||||||||
1932 | 38.97 | 48.17 | b | 53.60 | 59.98 | 67.47 | 75.65 | 82.35 | 80.31 | j | 76.90 | 61.89 | 54.47 | 40.18 | 59.97 | a | ||||||||||
1933 | 40.30 | a | 41.38 | 53.71 | 55.62 | 62.94 | 77.33 | 85.44 | 82.52 | a | 76.87 | 66.89 | 54.82 | 46.13 | 61.99 | |||||||||||
1934 | 46.31 | 51.62 | 60.67 | a | 65.28 | a | 73.27 | 72.27 | 84.56 | 82.95 | a | 77.13 | 68.87 | a | 55.40 | 49.55 | 65.66 | |||||||||
1935 | 46.85 | a | 50.29 | 50.73 | a | 61.97 | a | 64.55 | a | 79.17 | 80.89 | 79.82 | 73.25 | 63.88 | a | 51.37 | 46.26 | 62.42 | ||||||||
1936 | 44.71 | 47.18 | a | 54.95 | 63.18 | 71.81 | 81.87 | 83.74 | 82.55 | 73.98 | 62.40 | 51.90 | 44.65 | a | 63.58 | |||||||||||
1937 | 31.10 | a | 45.06 | c | 51.05 | 59.48 | 68.11 | 76.02 | a | 83.55 | 84.39 | 77.73 | b | ----- | z | 54.17 | 47.08 | 61.61 | a | |||||||
1938 | 47.08 | 47.57 | a | 50.18 | 60.46 | b | 68.24 | 76.53 | 81.32 | 80.18 | 75.68 | 63.50 | 49.52 | a | 47.39 | 62.30 | ||||||||||
1939 | 43.39 | 39.29 | 52.85 | 61.92 | 69.47 | 77.18 | 84.48 | 80.24 | 72.28 | 61.97 | 54.40 | 48.42 | 62.16 | |||||||||||||
1940 | 45.73 | 47.33 | 55.21 | 60.97 | a | 71.26 | 76.40 | 77.87 | 76.42 | 75.03 | j | 69.77 | ----- | z | 51.37 | 63.23 | b | |||||||||
1941 | 47.90 | b | 53.55 | 54.45 | 56.93 | 70.15 | a | 77.20 | 84.48 | 82.17 | a | 74.30 | 61.40 | 57.60 | a | 47.67 | a | 63.98 | ||||||||
1942 | 47.46 | h | 46.39 | 53.45 | 59.72 | 68.92 | 78.52 | 87.61 | i | 83.69 | 78.71 | a | 66.00 | 59.60 | 50.60 | a | 64.56 | b | ||||||||
1943 | 48.18 | 53.30 | c | 58.92 | f | 65.37 | 73.08 | 79.32 | 85.47 | 82.92 | 79.27 | 66.81 | 56.12 | 48.27 | 67.10 | a | ||||||||||
1944 | 45.76 | 46.76 | 50.60 | e | 55.26 | k | 69.42 | 74.60 | 82.69 | 83.42 | 76.88 | 67.26 | 51.87 | 47.73 | 63.36 | a | ||||||||||
1945 | 45.60 | 49.17 | a | 49.29 | 59.40 | 70.11 | 76.28 | 84.77 | 84.63 | 78.95 | 67.85 | a | 53.90 | 43.76 | 63.64 | |||||||||||
1946 | 44.56 | 48.89 | 54.67 | a | 68.10 | 70.40 | 80.87 | 85.81 | b | 82.93 | b | 77.80 | c | 66.39 | 51.82 | b | 53.33 | a | 65.46 | |||||||
1947 | 48.13 | a | 55.25 | 55.73 | 63.18 | 75.26 | 78.08 | 88.95 | a | 86.40 | 85.17 | c | 77.39 | m | 51.15 | d | 48.18 | q | 68.73 | b | ||||||
1948 | 47.71 | b | 47.21 | a | 50.02 | 65.85 | 71.90 | 79.45 | 87.74 | 84.02 | b | 79.90 | 69.34 | b | 51.69 | a | 46.16 | b | 65.08 | |||||||
1949 | 36.60 | 43.43 | 52.32 | 64.83 | 69.21 | 78.42 | 83.32 | 80.35 | 78.37 | 60.97 | 58.00 | 44.89 | 62.56 | |||||||||||||
1950 | 43.32 | 52.55 | 55.65 | 67.47 | 72.23 | 79.36 | a | 83.26 | 83.32 | 76.07 | 73.48 | b | 59.18 | 53.92 | a | 66.65 | ||||||||||
1951 | 51.15 | n | 49.71 | 55.42 | 61.90 | 70.29 | 76.62 | 87.79 | 81.13 | 77.50 | 66.56 | 53.00 | 44.95 | 65.90 | a | |||||||||||
1952 | 44.52 | a | 48.48 | 47.13 | 60.88 | 71.31 | 77.15 | 82.29 | 83.65 | a | 80.00 | 71.73 | 51.40 | 45.26 | 63.65 | |||||||||||
1953 | 49.85 | 50.02 | 55.29 | 61.18 | 64.69 | 78.82 | 86.66 | 81.65 | 79.43 | 67.13 | 57.12 | 46.40 | 64.85 | |||||||||||||
1954 | 46.27 | 57.14 | 53.11 | 66.07 | 73.08 | 78.45 | 86.35 | 80.63 | 77.13 | 68.27 | a | 58.60 | 46.58 | 65.97 | ||||||||||||
1955 | 41.26 | 43.93 | 53.48 | 58.68 | 68.43 | a | 74.62 | 79.32 | 81.08 | 78.60 | a | 71.40 | 55.63 | 49.55 | 63.00 | |||||||||||
1956 | 49.97 | 45.64 | 57.97 | 61.48 | 73.87 | 83.42 | 84.97 | 81.16 | 83.32 | 67.55 | 53.88 | a | 48.25 | a | 65.96 | |||||||||||
1957 | 47.55 | 56.43 | a | 56.10 | 60.86 | a | 66.73 | 81.25 | 85.34 | 82.05 | 77.22 | 64.53 | 50.97 | 48.71 | 64.81 | |||||||||||
1958 | 47.76 | b | 52.91 | a | 49.77 | a | 60.57 | 75.40 | 80.98 | a | 86.39 | 85.02 | 77.65 | 68.42 | 54.70 | 51.76 | 65.94 | |||||||||
1959 | 49.34 | 49.00 | 57.81 | 66.63 | 69.27 | 84.55 | 88.06 | 82.42 | 77.59 | a | 67.63 | 56.17 | 49.23 | 66.47 | ||||||||||||
1960 | 42.52 | 46.76 | 58.98 | 63.62 | 70.47 | 82.88 | 86.69 | 86.15 | 80.42 | 65.87 | 55.77 | 47.18 | 65.61 | |||||||||||||
1961 | 50.10 | 53.62 | 54.82 | 64.75 | 70.77 | 83.27 | 87.31 | 84.24 | 75.25 | 66.90 | 53.43 | 46.23 | 65.89 | |||||||||||||
1962 | 46.48 | 51.30 | 49.84 | 67.42 | 69.44 | 78.97 | 84.84 | 86.08 | 79.17 | 68.71 | 59.23 | 50.66 | 66.01 | |||||||||||||
1963 | 44.24 | 55.96 | 54.98 | 60.55 | 73.18 | 76.72 | a | 88.73 | 81.92 | 79.05 | 70.90 | 56.68 | 47.71 | 65.89 | ||||||||||||
1964 | 44.94 | 46.84 | 52.29 | 60.62 | 69.48 | 78.00 | 88.03 | a | 81.60 | 76.59 | a | 71.77 | 51.47 | 46.68 | a | 64.03 | ||||||||||
1965 | 47.74 | 50.27 | 52.29 | 59.07 | 66.50 | 72.90 | 86.13 | 84.17 | b | 75.05 | a | 70.74 | 58.90 | 49.85 | a | 64.47 | ||||||||||
1966 | ----- | z | 46.50 | j | 56.85 | 64.78 | 73.21 | 79.55 | 86.85 | 83.85 | 77.17 | a | 65.68 | 55.88 | 46.50 | 69.03 | b | |||||||||
1967 | 45.85 | 51.37 | a | 57.26 | 55.47 | 68.60 | 74.28 | 84.16 | 82.92 | a | 76.13 | 67.70 | a | 56.85 | 40.23 | 63.40 | ||||||||||
1968 | 43.92 | 54.22 | 55.17 | a | 60.80 | 71.52 | a | 83.62 | a | 85.95 | a | 79.87 | 77.18 | 65.42 | 53.40 | 43.18 | 64.52 | |||||||||
1969 | 50.21 | b | 47.30 | 51.28 | a | 63.00 | 71.61 | 76.82 | 84.98 | 85.44 | 77.71 | a | 61.15 | 52.17 | a | 47.02 | 64.06 | |||||||||
1970 | 42.82 | 50.72 | a | 51.16 | 56.09 | a | 70.24 | 80.63 | 85.43 | b | 84.29 | b | 71.74 | a | 58.92 | 53.32 | 44.39 | 62.48 | ||||||||
1971 | 45.77 | 49.00 | a | 54.75 | a | 59.45 | a | 65.06 | 75.63 | 85.32 | 79.78 | b | 74.82 | 56.95 | 48.77 | 42.24 | 61.46 | |||||||||
1972 | 44.95 | 51.29 | 63.02 | a | 63.24 | a | 70.10 | 77.45 | 85.74 | 81.62 | b | 76.48 | 64.02 | 48.07 | a | 43.55 | 64.13 | |||||||||
1973 | 42.15 | 47.20 | 45.58 | 57.14 | a | 70.03 | 79.35 | 85.85 | 84.44 | 77.50 | 68.10 | 52.20 | 48.35 | 63.16 | ||||||||||||
1974 | 44.82 | 48.68 | 54.84 | 61.70 | 71.72 | a | 84.75 | 84.77 | 81.11 | 77.97 | 67.42 | 54.55 | b | 42.71 | 64.59 | |||||||||||
1975 | 44.52 | 46.79 | 51.56 | 53.43 | 68.21 | 76.86 | a | 85.45 | 83.16 | 77.33 | 65.63 | 52.79 | a | 45.81 | 62.63 | |||||||||||
1976 | 47.23 | 51.16 | a | 52.23 | 56.98 | a | 69.18 | 76.02 | d | 83.32 | a | 81.12 | a | 72.65 | 62.56 | 54.05 | 48.66 | 62.93 | ||||||||
1977 | 44.94 | 51.84 | 51.56 | 61.45 | 66.31 | 80.33 | 86.47 | m | 85.26 | 78.26 | e | 67.97 | 56.33 | 50.32 | 63.14 | a | ||||||||||
1978 | 46.42 | a | 48.70 | 55.11 | 58.74 | g | 67.77 | 80.55 | a | 86.23 | 81.77 | 78.40 | 70.39 | 53.88 | 42.48 | 64.70 | a | |||||||||
1979 | 41.38 | a | 45.64 | 52.29 | 60.63 | 67.34 | 79.07 | 85.77 | 81.74 | 82.15 | 69.74 | 52.47 | 49.74 | b | 64.00 | |||||||||||
1980 | 48.19 | 52.74 | 53.39 | 61.95 | 64.37 | 79.18 | 87.98 | 83.32 | 78.90 | 67.76 | 58.83 | 53.32 | 65.83 | |||||||||||||
1981 | 51.69 | 53.45 | 53.79 | 64.95 | 70.27 | 83.72 | 86.37 | 84.81 | 77.80 | 64.10 | 56.72 | 48.71 | 66.36 | |||||||||||||
1982 | 45.11 | i | 51.62 | g | 51.24 | h | 61.20 | b | 69.02 | a | 76.20 | 84.26 | b | 84.31 | 76.84 | a | 63.52 | a | 53.65 | g | 44.87 | d | 70.03 | d | ||
1983 | 47.43 | d | 49.88 | c | 52.62 | a | 54.95 | b | 69.10 | b | 76.34 | a | 84.53 | 82.15 | 80.07 | 65.39 | c | 53.59 | a | 47.11 | 63.60 | |||||
1984 | 48.48 | 49.95 | 56.80 | a | 60.59 | a | 74.79 | 78.05 | a | 84.69 | 82.05 | 79.50 | a | 61.45 | 54.08 | 44.54 | d | 64.58 | ||||||||
1985 | 45.47 | a | 47.77 | b | 52.38 | a | 64.07 | 70.94 | 81.54 | f | 86.03 | b | 83.31 | b | 71.68 | b | 65.77 | 52.50 | 47.77 | a | 62.52 | a | ||||
1986 | 50.48 | e | ----- | z | 58.00 | 62.11 | b | 68.73 | 80.00 | 81.39 | 84.18 | 71.05 | b | 63.23 | c | 54.66 | a | 46.12 | a | 65.45 | a | |||||
1987 | 43.22 | b | 48.58 | b | 52.70 | c | 64.82 | 70.97 | 80.58 | 81.85 | 82.15 | a | 76.73 | 70.94 | 54.33 | 44.14 | b | 64.25 | ||||||||
1988 | 46.88 | e | 53.17 | b | 56.45 | a | 62.13 | 70.18 | a | 80.90 | a | 85.50 | 81.97 | 74.60 | 71.75 | a | 56.30 | 47.98 | c | 65.65 | ||||||
1989 | 47.43 | c | 53.24 | a | 60.33 | a | 68.25 | b | 72.40 | a | 79.76 | a | 87.77 | 82.45 | 79.03 | 68.03 | a | 61.52 | a | 50.39 | c | 67.55 | ||||
1990 | 47.73 | c | 50.56 | b | 56.76 | b | 64.95 | 68.53 | a | 83.12 | 84.12 | b | 81.19 | 78.32 | b | 70.00 | a | 58.64 | a | 45.17 | a | 65.76 | ||||
1991 | 48.44 | 58.37 | b | 50.95 | a | 60.52 | 68.37 | a | 74.90 | 85.68 | a | 84.28 | a | 79.28 | 70.95 | b | 52.55 | a | 45.50 | a | 64.98 | |||||
1992 | 44.55 | b | 51.87 | b | 53.12 | a | 62.60 | a | 69.39 | 75.03 | 80.81 | 79.87 | 74.30 | 65.37 | a | 49.35 | 43.39 | 62.47 | ||||||||
1993 | 47.68 | c | 48.48 | a | 56.14 | b | 61.83 | a | 70.90 | a | 76.85 | 82.74 | 82.15 | 74.42 | 64.70 | a | 49.84 | b | 44.48 | b | 63.35 | |||||
1994 | 46.61 | 46.26 | a | 55.85 | a | 61.20 | 66.95 | 81.42 | 84.13 | 86.37 | 78.07 | 63.25 | a | 49.52 | a | 47.63 | d | 63.94 | ||||||||
1995 | 45.40 | a | 53.88 | b | 54.50 | 57.62 | 64.97 | 75.55 | 83.77 | 85.98 | 77.67 | 65.85 | 58.10 | a | 47.67 | a | 64.25 | |||||||||
1996 | 46.32 | a | 55.39 | a | 55.69 | 63.97 | 72.45 | 80.98 | 86.21 | 84.15 | 74.05 | 65.35 | a | 54.40 | a | 47.68 | 65.55 | |||||||||
1997 | 45.80 | a | 49.18 | 58.53 | 59.03 | a | 73.97 | 73.96 | c | 84.35 | 82.92 | 78.42 | 63.03 | 54.28 | 43.55 | 63.92 | ||||||||||
1998 | 47.19 | 45.52 | a | 52.05 | 54.78 | a | 65.03 | 73.62 | 83.92 | 84.77 | 76.36 | a | 64.30 | a | 53.67 | 46.92 | a | 62.34 | ||||||||
1999 | 48.47 | a | 52.02 | a | 56.40 | 57.50 | a | 68.63 | a | 78.67 | 83.34 | 84.16 | 76.41 | a | 66.89 | 57.93 | 46.68 | 64.76 | ||||||||
2000 | 48.31 | b | 53.23 | a | 54.78 | a | 64.83 | 73.84 | 81.87 | 86.21 | 84.95 | a | 78.73 | 64.63 | a | 47.28 | a | 48.00 | 65.56 | |||||||
2001 | 45.20 | a | 48.14 | 54.44 | 60.13 | 74.10 | 80.87 | 85.19 | 83.76 | 78.80 | 68.42 | 57.52 | 43.56 | 65.01 | ||||||||||||
2002 | 46.82 | a | 50.63 | a | 54.29 | 66.20 | 70.50 | 80.90 | 86.95 | 84.26 | 77.53 | 63.73 | 54.65 | 45.03 | 65.12 | |||||||||||
2003 | 52.62 | a | 49.76 | c | 53.76 | 58.40 | 70.94 | 79.07 | a | 87.58 | 83.41 | c | 76.78 | 70.21 | b | 51.38 | 45.79 | 64.97 | ||||||||
2004 | 47.06 | 46.10 | 60.50 | c | 60.26 | a | 70.22 | a | 77.32 | b | 82.33 | a | 80.69 | b | 75.45 | a | 63.28 | b | 51.16 | a | 46.22 | b | 63.38 | |||
2005 | 47.69 | b | 50.36 | 54.24 | 59.59 | a | 69.79 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 56.33 | g | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 45.98 | 49.96 | 54.35 | 61.50 | 69.86 | 78.71 | 84.75 | 82.48 | 76.97 | 66.36 | 54.28 | 46.75 | 64.40 | |||||||||||||
S.D. | 3.20 | 3.58 | 3.24 | 3.21 | 2.83 | 2.92 | 2.36 | 2.14 | 2.54 | 3.40 | 3.09 | 2.92 | 1.35 | |||||||||||||
SKEW | -1.42 | -0.18 | 0.37 | -0.14 | -0.20 | 0.32 | -1.00 | -0.74 | 0.05 | -0.10 | 0.05 | 0.05 | -0.11 | |||||||||||||
MAX | 52.62 | 58.37 | 63.94 | 68.25 | 75.82 | 87.50 | 88.95 | 86.40 | 85.17 | 74.62 | 61.52 | 53.92 | 67.55 | |||||||||||||
MIN | 31.10 | 39.29 | 45.58 | 53.43 | 62.94 | 72.27 | 76.24 | 74.44 | 71.05 | 56.95 | 47.28 | 40.18 | 61.46 | |||||||||||||
YRS | 84 | 86 | 87 | 84 | 87 | 87 | 84 | 84 | 82 | 81 | 81 | 88 | 63 |