YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1957 | ----- | z | 54.06 | t | 53.27 | 57.97 | 62.94 | 77.75 | 81.61 | 77.35 | 74.72 | a | 60.98 | 47.85 | 46.66 | 64.11 | b | |||||||||
1958 | 44.60 | 49.30 | 47.00 | 56.92 | 71.74 | 78.22 | 82.81 | 81.45 | 76.16 | h | 63.16 | b | 50.77 | 48.60 | 61.32 | a | ||||||||||
1959 | 46.18 | 45.68 | 54.29 | 63.15 | 66.58 | 80.25 | 82.48 | 77.21 | 73.17 | 64.14 | f | 52.20 | h | 45.47 | 63.45 | b | ||||||||||
1960 | 39.35 | 42.93 | 56.79 | 61.29 | b | 69.91 | b | 81.74 | a | 83.90 | 82.50 | a | 77.50 | 62.42 | f | 51.68 | b | 43.61 | d | 62.84 | a | |||||
1961 | 46.44 | 50.18 | 52.95 | a | 61.33 | 69.03 | 81.17 | a | 82.61 | 79.74 | 71.32 | 61.63 | 49.80 | b | 42.21 | 62.37 | ||||||||||
1962 | 43.35 | 47.64 | 47.58 | 64.17 | a | 65.65 | 77.05 | 81.53 | 82.37 | 75.30 | 64.15 | 56.02 | b | 47.87 | 62.72 | |||||||||||
1963 | 41.85 | 53.16 | 52.42 | a | 57.53 | 71.63 | 74.27 | 85.33 | a | 77.56 | 75.97 | 66.50 | 52.29 | a | 44.62 | e | 62.76 | |||||||||
1964 | 40.32 | 42.26 | d | 47.00 | d | 55.57 | a | 66.50 | a | 73.75 | h | 83.06 | e | 78.40 | f | 74.48 | g | 68.54 | c | 47.34 | b | 42.20 | k | 56.32 | d | |
1965 | 46.16 | f | 47.09 | a | 47.60 | e | 55.34 | e | 63.20 | h | 69.79 | f | 80.94 | f | 79.14 | i | 68.75 | d | 64.64 | i | 52.67 | f | 43.23 | k | 54.69 | h |
1966 | 41.50 | l | 42.32 | i | 55.23 | g | 62.92 | l | 69.50 | i | 75.33 | f | 81.28 | h | 78.70 | i | 72.37 | k | 61.43 | j | 53.10 | j | 43.95 | k | ----- | z |
1967 | 43.07 | i | 48.67 | g | 55.55 | k | 53.45 | h | 66.15 | h | 73.28 | g | 80.70 | h | 78.69 | d | 73.03 | k | 62.65 | n | 52.74 | m | 36.77 | k | 78.69 | k |
1968 | 40.75 | e | 52.02 | g | 52.35 | e | 55.95 | j | 66.77 | g | 76.61 | h | 79.09 | n | 74.11 | i | 72.05 | j | 61.80 | k | 50.77 | 40.18 | 46.01 | h | ||
1969 | 46.97 | 44.19 | a | 47.74 | 59.57 | 67.85 | 74.33 | a | 81.94 | 81.98 | 74.42 | 59.11 | 51.17 | 45.37 | 61.22 | |||||||||||
1970 | 42.61 | 50.76 | a | 50.45 | 53.15 | 68.27 | 76.35 | 82.69 | 80.61 | 68.98 | 57.83 | a | 49.75 | b | 42.66 | 60.34 | ||||||||||
1971 | 44.02 | 47.25 | 54.11 | 56.92 | 62.73 | a | 75.70 | 82.52 | a | 78.13 | 73.67 | 56.47 | 48.10 | 40.50 | 60.01 | |||||||||||
1972 | 42.87 | a | 48.83 | 58.90 | 60.12 | 66.93 | a | 74.65 | 81.56 | 77.48 | a | 71.08 | 58.44 | 45.35 | 38.56 | 60.40 | ||||||||||
1973 | 38.90 | a | 43.70 | 42.33 | a | 53.40 | f | 67.31 | 76.63 | 81.93 | b | 80.21 | c | 73.22 | c | 62.65 | g | 50.15 | d | 43.74 | f | 61.60 | c | |||
1974 | 41.48 | 44.84 | 52.52 | b | 58.55 | 69.03 | b | 82.45 | 79.24 | 77.98 | 72.68 | 63.61 | c | 49.90 | d | 38.73 | e | 60.92 | ||||||||
1975 | 40.65 | h | 43.98 | 46.56 | 51.37 | g | 62.72 | h | 74.09 | g | 79.23 | i | 79.89 | 73.48 | 61.34 | 51.09 | a | 44.81 | 57.31 | e | ||||||
1976 | 44.05 | 48.69 | 48.48 | 56.20 | 67.66 | 75.75 | 79.81 | 77.60 | 71.88 | 60.06 | 52.25 | 43.50 | 60.49 | |||||||||||||
1977 | 43.00 | 48.77 | 48.84 | 60.07 | 61.61 | 78.80 | 81.52 | 80.16 | 74.05 | 64.27 | 53.80 | 48.35 | 61.94 | |||||||||||||
1978 | 45.42 | 46.55 | 53.76 | b | 57.57 | 65.45 | 78.07 | 83.16 | 77.61 | c | 73.03 | 67.03 | 52.29 | i | 38.13 | 62.34 | a | |||||||||
1979 | 37.25 | c | 44.73 | 49.47 | 58.48 | 65.95 | 74.75 | 83.19 | d | 79.05 | 77.52 | 66.18 | 48.23 | 45.56 | 60.86 | |||||||||||
1980 | 45.34 | 48.79 | 48.05 | a | 58.27 | 62.13 | a | 76.65 | 82.38 | a | 79.05 | 73.42 | 62.50 | 51.58 | 49.15 | e | 61.44 | |||||||||
1981 | 46.66 | 48.50 | a | 49.35 | 63.02 | 67.16 | 80.43 | 82.00 | 80.08 | 72.50 | 59.08 | 53.03 | 46.21 | 62.34 | ||||||||||||
1982 | 41.85 | a | 47.30 | a | 51.56 | d | 59.89 | b | 66.52 | a | 75.22 | a | 80.92 | 79.97 | b | 72.07 | a | 58.73 | 48.80 | b | 43.55 | a | 60.53 | |||
1983 | 44.85 | 46.89 | 50.15 | 52.35 | d | 66.78 | a | 74.93 | 81.13 | a | 78.94 | 78.19 | c | 62.45 | 50.26 | a | 46.31 | b | 61.10 | |||||||
1984 | 44.89 | c | 48.35 | b | 55.50 | b | 59.33 | a | 74.98 | 77.37 | d | 80.56 | e | 77.76 | d | 75.24 | c | 58.68 | a | 50.93 | b | 43.32 | a | 62.24 | ||
1985 | 43.39 | 45.31 | a | 51.12 | c | 62.79 | a | 68.50 | c | 79.75 | b | 82.79 | 80.78 | a | 69.23 | 62.74 | 49.98 | 44.43 | d | 61.74 | ||||||
1986 | 49.74 | 49.58 | b | 55.29 | c | 59.32 | 68.68 | c | 77.95 | a | 79.20 | c | 80.60 | b | 68.97 | a | 60.29 | e | 51.43 | c | 43.29 | b | 62.03 | |||
1987 | 42.59 | b | 46.85 | a | 49.42 | a | 62.13 | c | 66.90 | a | 78.72 | c | 79.48 | 77.97 | 73.45 | 66.55 | a | 49.76 | c | 41.33 | e | 61.26 | ||||
1988 | 43.76 | 50.38 | a | 52.97 | a | 59.53 | 67.16 | c | 78.75 | b | 81.79 | 78.29 | b | 68.88 | b | 68.27 | 52.41 | b | 41.14 | i | 63.84 | a | ||||
1989 | 42.98 | b | 48.48 | e | 60.04 | e | 67.06 | c | 70.74 | 78.18 | 83.67 | b | 78.84 | c | 73.90 | e | 63.35 | 53.67 | a | 45.12 | r | 65.54 | a | |||
1990 | 43.36 | c | 46.37 | b | 53.52 | f | 62.02 | e | 66.87 | a | 79.73 | 79.44 | d | 77.78 | a | 74.38 | 62.93 | b | 52.28 | 38.83 | d | 62.18 | a | |||
1991 | 44.09 | c | 51.43 | f | 48.85 | g | 59.94 | c | 66.13 | d | 74.54 | b | 83.12 | f | 81.03 | 74.54 | e | 65.72 | a | 49.10 | e | 45.02 | d | 62.23 | c | |
1992 | 39.45 | u | 50.88 | l | 51.68 | l | 63.61 | h | 68.28 | f | 73.71 | f | 78.57 | b | 77.45 | a | 76.10 | 63.50 | a | 46.58 | 38.13 | a | 63.39 | f | ||
1993 | 43.72 | b | 45.56 | a | 54.22 | a | 61.46 | c | 71.18 | a | 76.97 | 79.56 | d | 80.89 | q | 73.57 | p | 63.57 | i | 50.45 | k | 44.03 | l | 61.81 | e | |
1994 | 47.48 | e | 46.88 | g | 55.25 | i | 61.96 | f | 69.57 | p | 82.98 | g | 82.42 | e | 82.18 | 75.07 | 61.52 | 48.12 | 46.84 | i | 66.13 | f | ||||
1995 | 42.91 | h | 52.88 | h | 52.73 | t | 56.94 | n | 62.10 | k | 74.00 | j | 82.45 | j | 82.73 | g | 75.89 | k | 63.14 | m | 56.07 | o | 51.69 | r | ----- | z |
1996 | 45.04 | h | 51.94 | b | 52.10 | u | 62.85 | j | 73.95 | u | 79.95 | t | 83.45 | l | 82.19 | o | 70.71 | k | 59.87 | l | 52.93 | o | 45.03 | p | 51.94 | k |
1997 | 42.59 | n | 50.72 | s | 57.90 | j | 53.50 | t | 71.86 | x | 76.00 | t | 79.06 | m | ----- | z | ----- | z | 66.89 | q | 47.46 | q | 41.17 | s | ----- | z |
1998 | 45.00 | r | 45.37 | m | 53.00 | p | 50.07 | w | 65.21 | s | 67.40 | y | ----- | z | ----- | z | ----- | z | 63.14 | x | 51.20 | t | 40.95 | u | ----- | z |
1999 | 44.92 | s | 45.58 | p | 51.56 | v | 51.50 | x | 61.64 | x | 73.50 | x | 73.92 | y | 73.29 | x | 69.00 | y | ----- | z | 49.29 | w | 39.17 | v | ----- | z |
2000 | 46.58 | y | 47.65 | s | 48.43 | x | 59.25 | x | 68.88 | w | 76.62 | v | ----- | z | ----- | z | 78.03 | l | 61.59 | h | 43.60 | j | 46.22 | m | ----- | z |
2001 | 43.53 | m | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2002 | ----- | z | ----- | z | 52.35 | k | 63.50 | e | 70.55 | b | 80.82 | 85.69 | d | 84.88 | o | 73.56 | e | 60.83 | h | 51.86 | e | 42.40 | g | 71.00 | f | |
2003 | 49.42 | f | 45.95 | i | 50.79 | g | ----- | z | ----- | z | 78.05 | 85.66 | o | 82.63 | a | 75.89 | g | 68.84 | l | 48.00 | b | 41.77 | i | 69.56 | i | |
2004 | 42.77 | i | 43.02 | d | 59.47 | b | 59.46 | d | 68.60 | a | 75.95 | 81.95 | 78.75 | a | 72.08 | f | 61.57 | c | 47.15 | g | 43.90 | g | 66.10 | d | ||
2005 | 45.64 | j | 47.42 | i | 50.25 | g | 57.38 | b | 68.45 | 73.95 | b | 83.60 | a | 79.03 | a | 72.44 | e | 63.50 | a | 52.71 | d | 43.40 | f | 68.88 | d | |
2006 | 42.93 | j | 48.33 | b | 48.92 | l | ----- | z | ----- | z | 80.52 | g | 83.00 | a | 79.65 | a | 70.63 | 60.38 | c | 53.46 | b | 41.04 | d | 62.36 | e | |
2007 | 40.66 | i | 45.92 | h | 55.13 | e | 61.45 | h | 70.52 | d | 77.18 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 67.61 | i | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 43.57 | 47.24 | 51.67 | 59.45 | 67.68 | 77.52 | 81.92 | 79.42 | 73.24 | 62.46 | 50.56 | 43.53 | 61.41 | |||||||||||||
S.D. | 2.62 | 2.63 | 4.03 | 3.13 | 2.83 | 2.31 | 1.66 | 1.65 | 2.47 | 3.09 | 2.27 | 3.23 | 0.86 | |||||||||||||
SKEW | -0.15 | 0.04 | 0.14 | -0.03 | 0.00 | 0.30 | -0.08 | 0.47 | -0.16 | 0.17 | -0.06 | -0.15 | 0.07 | |||||||||||||
MAX | 49.74 | 53.16 | 60.04 | 67.06 | 74.98 | 82.45 | 85.69 | 82.63 | 78.19 | 68.54 | 56.02 | 49.15 | 62.76 | |||||||||||||
MIN | 37.25 | 42.26 | 42.33 | 52.35 | 61.61 | 73.95 | 78.57 | 77.21 | 68.75 | 56.47 | 45.35 | 38.13 | 60.01 | |||||||||||||
YRS | 32 | 34 | 34 | 34 | 35 | 35 | 36 | 37 | 35 | 33 | 36 | 30 | 19 |