YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
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 | 36.11 | s | ----- | 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 | 59.79 | l | 64.12 | d | 75.52 | b | 84.27 | 83.42 | 79.39 | 76.10 | 63.11 | d | 53.39 | b | 51.55 | 70.10 | c | |||||
1940 | 45.61 | 47.07 | b | 59.23 | 64.57 | 76.71 | 82.70 | 81.37 | a | 77.29 | 71.60 | 64.32 | 48.68 | b | 46.37 | a | 63.79 | |||||||||
1941 | 41.84 | 48.29 | 53.04 | d | 55.83 | 69.55 | 75.33 | 77.74 | 76.55 | 71.62 | f | 62.83 | g | 55.60 | 47.16 | 60.09 | b | |||||||||
1942 | 46.93 | d | 45.96 | 53.90 | b | 62.70 | 72.74 | 84.23 | 83.61 | 76.17 | b | 70.50 | f | 61.86 | b | ----- | z | 49.89 | m | 65.35 | c | |||||
1943 | 44.68 | 53.32 | 57.15 | e | 68.00 | 72.29 | 75.97 | a | 75.61 | 77.10 | 74.13 | 65.45 | 61.72 | a | 51.10 | k | 65.95 | a | ||||||||
1944 | ----- | z | 47.45 | 54.37 | a | 62.27 | 72.00 | 81.80 | 82.55 | 81.23 | 75.20 | 66.48 | 50.60 | 48.19 | 65.65 | a | ||||||||||
1945 | 45.71 | 53.07 | a | 53.71 | 63.90 | a | ----- | z | 79.24 | a | 83.93 | b | 78.61 | 84.36 | s | ----- | z | ----- | z | ----- | z | 65.45 | e | |||
1946 | ----- | z | ----- | z | ----- | z | ----- | z | 74.71 | q | 83.87 | 77.97 | 74.23 | 70.96 | b | 62.75 | c | 51.24 | i | 56.31 | r | 73.95 | g | |||
1947 | ----- | z | 55.08 | o | 58.81 | e | 63.83 | 73.65 | 80.57 | 84.16 | 77.26 | 76.39 | g | ----- | z | ----- | z | ----- | z | 73.05 | f | |||||
1948 | ----- | z | ----- | z | ----- | z | 70.75 | r | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1949 | ----- | z | ----- | z | ----- | z | ----- | z | 77.67 | v | 82.69 | q | 82.62 | g | ----- | z | ----- | z | ----- | z | 59.00 | t | ----- | z | ----- | z |
1950 | 54.33 | v | 57.88 | l | 58.56 | o | ----- | z | 73.24 | f | 84.86 | a | 79.50 | a | 79.83 | g | 74.15 | d | 74.18 | c | 64.04 | e | 58.12 | f | 75.35 | g |
1951 | 47.52 | h | 49.79 | 54.25 | k | 60.63 | k | 71.76 | f | 84.55 | h | 86.86 | b | 83.41 | n | 80.44 | u | 66.14 | j | 53.80 | j | 48.16 | f | 68.32 | j | |
1952 | 51.29 | j | 52.33 | q | 55.17 | s | 62.39 | b | 73.79 | l | 83.24 | i | 81.71 | j | 81.90 | u | ----- | z | ----- | z | ----- | z | ----- | z | 62.39 | k |
1953 | 55.32 | i | 53.08 | p | 43.00 | y | ----- | z | 71.23 | e | 84.57 | 84.71 | 83.31 | o | ----- | z | 66.83 | y | 57.92 | r | 49.08 | f | 80.17 | i | ||
1954 | 49.50 | o | ----- | z | 59.14 | x | 74.88 | v | 74.26 | h | 82.44 | l | 84.31 | o | 79.60 | k | 77.73 | o | 70.00 | o | 61.93 | 52.58 | 57.26 | j | ||
1955 | 43.90 | a | 49.90 | g | 57.73 | a | 66.30 | 69.13 | a | 80.53 | 80.86 | c | 78.04 | c | 80.11 | l | 70.68 | 58.75 | j | 55.13 | a | 66.92 | c | |||
1956 | 54.37 | d | 46.90 | 63.71 | 65.07 | b | 78.52 | 85.50 | 82.32 | 80.39 | 82.70 | 69.84 | 57.15 | j | 51.57 | x | 70.93 | b | ||||||||
1957 | 49.29 | 60.62 | g | 56.31 | b | 64.63 | 69.26 | 84.67 | ----- | z | 73.55 | 73.80 | 61.72 | b | 52.52 | a | 54.12 | g | 65.08 | c | ||||||
1958 | 46.48 | 54.64 | 51.06 | 65.20 | 77.42 | 85.13 | 85.71 | 82.42 | 75.52 | a | 66.70 | a | 58.10 | a | 57.93 | b | 67.19 | |||||||||
1959 | 54.19 | 50.93 | 60.55 | 69.93 | 75.81 | 85.77 | 86.13 | 79.61 | 75.41 | a | 70.03 | 56.40 | 46.68 | 67.62 | ||||||||||||
1960 | 39.97 | 46.00 | i | 62.68 | 68.37 | 74.45 | b | 84.67 | 82.30 | a | 82.97 | 77.87 | 64.10 | 58.63 | 44.48 | 67.32 | a | |||||||||
1961 | 48.61 | 52.64 | 57.71 | 67.67 | 76.48 | 84.10 | 84.13 | 78.50 | a | 73.30 | 66.97 | 52.20 | 43.58 | 65.49 | ||||||||||||
1962 | 44.10 | 53.29 | 51.52 | 69.90 | 73.06 | 81.67 | 82.48 | 87.10 | 77.50 | 69.81 | 61.28 | e | ----- | z | 68.34 | a | ||||||||||
1963 | ----- | z | 54.73 | m | 58.81 | d | 67.23 | 76.42 | 79.66 | a | 81.70 | a | 77.97 | 76.67 | 71.77 | 58.93 | 53.19 | 70.24 | b | |||||||
1964 | 48.42 | 47.59 | 53.81 | 63.00 | 76.16 | 83.50 | 85.35 | 83.39 | 75.87 | 72.65 | 56.93 | 50.81 | 66.46 | |||||||||||||
1965 | 50.27 | e | 49.40 | c | 58.15 | k | 66.69 | a | 72.87 | 80.30 | 83.35 | 81.61 | 74.60 | 72.06 | 60.83 | 44.74 | 66.98 | a | ||||||||
1966 | 41.26 | 43.39 | 60.06 | 67.73 | 78.35 | 82.87 | 86.77 | 82.61 | 77.10 | 69.52 | 62.27 | 51.39 | 66.94 | |||||||||||||
1967 | 53.77 | 56.82 | 65.26 | 67.90 | 75.55 | 81.63 | 85.52 | 80.23 | 76.07 | a | 71.65 | 60.03 | 40.06 | 67.87 | ||||||||||||
1968 | 39.32 | 52.41 | 56.26 | 62.03 | 73.52 | 85.53 | 82.58 | 77.52 | 77.17 | 72.48 | 55.83 | 46.52 | 65.10 | |||||||||||||
1969 | 51.61 | 51.18 | 54.32 | 68.53 | 74.81 | 84.50 | 85.52 | 84.10 | 77.30 | 66.61 | 55.40 | 49.67 | a | 66.96 | ||||||||||||
1970 | 47.00 | 53.93 | 54.06 | 62.83 | 75.84 | 83.13 | 85.43 | a | 82.19 | 77.70 | 65.19 | 61.53 | ----- | z | 68.08 | a | ||||||||||
1971 | 51.35 | 54.00 | 63.23 | 65.90 | 72.55 | 83.63 | 87.23 | 79.32 | 77.07 | 62.55 | 56.40 | 44.23 | 66.45 | |||||||||||||
1972 | 49.84 | 56.59 | 66.45 | 70.60 | 74.97 | 80.23 | 84.65 | 80.42 | 74.73 | 67.06 | 53.07 | 49.71 | 67.36 | |||||||||||||
1973 | 44.39 | 47.30 | a | 51.00 | 59.77 | 71.87 | a | 82.20 | 82.74 | 82.13 | 80.73 | 72.58 | 60.52 | c | 52.90 | 65.68 | ||||||||||
1974 | 50.45 | b | 54.36 | 63.00 | 67.47 | 77.93 | a | 88.57 | 81.23 | 79.94 | 75.73 | 65.26 | 57.00 | ----- | z | 69.17 | a | |||||||||
1975 | 45.19 | ----- | z | 55.26 | 60.11 | b | 71.27 | a | 83.41 | c | 81.57 | c | 82.39 | h | 73.72 | e | 69.84 | f | 59.81 | c | 48.26 | 64.29 | c | |||
1976 | 49.31 | e | 55.39 | f | 58.30 | k | 65.17 | l | 73.04 | d | 82.82 | b | 80.86 | b | 81.52 | b | 74.26 | k | 63.04 | h | 57.65 | g | 50.00 | j | 73.51 | g |
1977 | 45.44 | m | 51.42 | i | 55.04 | c | 66.50 | b | 72.97 | a | 84.22 | c | 81.20 | a | 81.68 | f | 77.75 | b | ----- | z | ----- | z | ----- | z | 72.95 | f |
1978 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1979 | 43.08 | e | 49.54 | b | 57.76 | b | 69.00 | 71.48 | 80.07 | 87.00 | a | 81.83 | a | ----- | z | ----- | z | ----- | z | 50.61 | m | 67.47 | d | |||
1980 | 48.50 | g | 50.92 | d | 54.61 | 66.33 | c | 71.19 | e | 88.14 | a | 89.26 | 81.97 | a | 78.84 | e | 67.28 | b | 59.96 | g | 56.86 | i | 72.06 | c | ||
1981 | 50.95 | j | 54.95 | h | 56.95 | i | 69.73 | 73.03 | a | 86.48 | a | 82.79 | c | 80.83 | a | 77.47 | 66.60 | f | 62.25 | n | 54.75 | g | 78.39 | f | ||
1982 | 47.69 | e | 49.24 | k | 59.24 | f | 66.92 | e | 70.77 | 83.27 | 84.61 | 81.13 | 76.90 | 68.72 | b | 54.17 | 47.87 | h | 70.47 | c | ||||||
1983 | 49.83 | b | 49.81 | a | 54.93 | b | 59.65 | g | 74.07 | b | 80.04 | g | 85.46 | e | 83.04 | e | 80.07 | 67.16 | 55.34 | a | 50.56 | f | 66.64 | c | ||
1984 | 49.65 | e | 54.34 | 59.55 | 65.85 | d | 79.97 | 82.40 | 82.87 | 78.10 | 78.03 | 61.29 | 56.50 | 47.03 | a | 66.30 | ||||||||||
1985 | 45.26 | 49.93 | a | 57.35 | 67.47 | 73.94 | 85.13 | 86.20 | a | 83.50 | c | 75.77 | 66.19 | 56.47 | 50.71 | 66.49 | ||||||||||
1986 | 55.61 | c | 53.81 | a | 60.81 | 68.63 | 75.10 | 81.13 | 79.52 | 83.43 | a | 75.48 | a | 65.62 | b | 55.23 | 46.29 | c | 66.72 | |||||||
1987 | 47.42 | 48.22 | a | 53.60 | a | 66.47 | 70.77 | a | 83.21 | b | 85.38 | e | 79.55 | 75.33 | l | 70.65 | 55.30 | 48.54 | g | 66.06 | b | |||||
1988 | 44.55 | b | 52.96 | b | 60.17 | b | 64.03 | 75.37 | a | 82.93 | 84.17 | a | 77.70 | d | 73.57 | 70.00 | 58.63 | 49.13 | a | 66.10 | ||||||
1989 | 46.24 | j | 60.11 | i | 64.34 | b | 74.40 | 79.80 | a | 86.00 | c | 87.60 | a | 81.93 | b | 78.88 | d | 68.55 | b | 59.92 | d | 52.18 | c | 73.36 | b | |
1990 | 50.04 | c | 49.59 | a | 58.24 | b | 68.67 | c | 75.10 | b | 89.81 | c | 82.55 | 80.62 | e | 77.73 | h | 69.11 | c | 57.64 | h | 46.31 | b | 67.00 | b | |
1991 | 47.78 | m | 56.00 | e | 53.86 | c | 67.00 | c | 76.08 | e | 77.57 | b | 81.90 | 79.37 | a | 75.50 | h | 72.31 | b | 56.78 | c | 45.74 | h | 68.98 | c | |
1992 | 39.58 | l | 50.20 | d | 57.39 | c | 68.48 | a | 69.00 | a | 80.00 | 84.38 | b | 83.00 | e | 81.41 | a | 72.63 | d | 52.86 | b | 45.23 | 67.69 | a | ||
1993 | 48.26 | l | 51.00 | g | 62.17 | g | 67.80 | e | 74.30 | k | 83.88 | d | 85.74 | d | 80.00 | e | 76.18 | h | 68.26 | h | 57.55 | j | 51.44 | d | 73.77 | g |
1994 | 51.23 | i | 53.06 | k | 60.58 | g | 67.10 | j | 74.92 | f | 89.62 | f | 89.64 | c | 87.71 | c | 78.28 | a | 66.71 | c | 56.00 | g | 52.00 | i | 80.59 | h |
1995 | 44.68 | f | 57.84 | c | 59.96 | e | 64.35 | j | 72.48 | d | 82.53 | 87.04 | f | 83.86 | b | 79.84 | e | 75.33 | p | 63.62 | i | 51.90 | k | 72.75 | f | |
1996 | 54.88 | w | 57.36 | r | 61.57 | x | 72.73 | h | 83.19 | d | ----- | z | 85.15 | d | 82.18 | n | 75.80 | o | 67.64 | c | 65.11 | u | 51.50 | y | 78.66 | i |
1997 | 44.79 | q | 54.33 | s | ----- | z | 64.29 | b | 76.94 | 83.88 | d | 85.63 | d | 84.21 | q | 78.56 | l | 72.57 | x | ----- | z | ----- | z | 77.68 | h | |
1998 | 52.36 | q | 49.21 | i | 58.04 | g | 62.41 | m | 75.81 | j | 83.17 | g | 85.81 | o | ----- | z | ----- | z | ----- | z | 61.81 | n | 56.10 | k | ----- | z |
1999 | 55.21 | b | 59.06 | k | 65.23 | a | 61.78 | g | ----- | z | 81.50 | f | 82.00 | v | ----- | z | ----- | z | 71.83 | y | ----- | z | ----- | z | 60.22 | j |
2000 | ----- | z | 60.62 | u | 65.44 | v | 73.89 | k | 82.78 | d | ----- | z | 84.93 | p | ----- | z | 85.72 | l | ----- | z | 50.50 | b | 54.10 | a | 62.46 | i |
2001 | 46.81 | e | 51.89 | ----- | z | 66.48 | i | 78.61 | h | 88.14 | i | 84.26 | h | 82.21 | q | 79.81 | n | 74.05 | l | 61.12 | e | 48.70 | h | 53.27 | i | |
2002 | 52.44 | o | 57.47 | k | 64.32 | l | 75.31 | n | 77.53 | n | 89.14 | p | 82.90 | j | 81.69 | o | 79.88 | v | 69.11 | v | 63.33 | u | 56.50 | w | ----- | z |
2003 | 61.15 | r | 54.00 | o | 63.69 | r | 68.04 | d | 78.61 | h | 85.18 | m | 91.64 | i | 84.83 | m | 83.10 | j | 76.79 | q | 67.11 | u | 56.10 | k | 68.04 | k |
2004 | 53.33 | v | 53.43 | v | 61.00 | q | 65.47 | k | 76.48 | b | 85.22 | c | 85.25 | c | 80.73 | e | 83.59 | m | 69.14 | q | 56.00 | r | 53.00 | o | 81.92 | h |
2005 | 57.67 | y | ----- | z | 59.20 | u | 69.09 | s | 78.21 | c | 84.83 | a | 88.96 | e | 83.43 | x | 80.08 | e | 70.17 | m | 70.58 | r | 57.74 | l | 83.02 | h |
2006 | 58.00 | s | 61.17 | e | 59.32 | f | 71.92 | d | 80.85 | d | 88.29 | b | 87.29 | g | 78.36 | i | 74.36 | e | 69.15 | d | 64.60 | o | 54.23 | r | 74.29 | f |
2007 | 47.73 | i | 59.20 | c | 61.87 | h | 68.91 | h | 74.38 | g | 86.44 | e | 88.78 | h | ----- | z | 80.52 | e | 74.88 | e | 68.65 | g | 49.12 | f | 75.26 | h |
2008 | 48.56 | m | 57.57 | o | 63.21 | b | 69.21 | b | 73.68 | c | 86.52 | e | 81.28 | f | 84.48 | h | 78.45 | s | ----- | z | ----- | z | ----- | z | 73.15 | h |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 47.65 | 51.73 | 57.88 | 66.23 | 74.65 | 83.33 | 83.80 | 80.45 | 76.67 | 68.03 | 57.01 | 48.92 | 66.41 | |||||||||||||
S.D. | 4.15 | 3.87 | 4.15 | 3.31 | 3.30 | 2.88 | 2.84 | 2.88 | 2.59 | 3.59 | 3.71 | 3.94 | 1.03 | |||||||||||||
SKEW | 0.05 | 0.26 | 0.31 | -0.52 | 0.51 | -0.46 | -0.42 | 0.02 | 0.13 | -0.10 | -0.22 | 0.09 | -0.93 | |||||||||||||
MAX | 55.61 | 61.17 | 66.45 | 74.40 | 83.19 | 89.81 | 89.64 | 87.71 | 82.70 | 74.88 | 64.04 | 57.93 | 67.87 | |||||||||||||
MIN | 39.32 | 43.39 | 51.00 | 55.83 | 69.00 | 75.33 | 75.61 | 73.55 | 70.96 | 61.29 | 48.68 | 40.06 | 63.79 | |||||||||||||
YRS | 37 | 38 | 43 | 49 | 53 | 55 | 54 | 48 | 42 | 43 | 38 | 30 | 16 |