YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1916 | ----- | z | ----- | z | 46.14 | m | 55.34 | a | 53.20 | f | 62.19 | a | 69.65 | a | ----- | z | 62.29 | b | 45.47 | l | 32.82 | e | ----- | z | 56.46 | g |
1917 | ----- | z | ----- | z | ----- | z | ----- | z | 57.85 | e | 65.08 | j | 73.04 | g | 73.17 | a | 64.23 | d | 53.28 | f | 41.40 | j | ----- | z | 65.08 | i |
1918 | ----- | z | ----- | z | ----- | z | ----- | z | 46.70 | p | ----- | z | ----- | z | 70.42 | m | 68.95 | k | ----- | z | 40.66 | b | ----- | z | 40.66 | k |
1919 | ----- | z | ----- | z | ----- | z | ----- | z | 66.18 | c | 69.66 | a | 73.98 | a | 71.97 | 63.58 | 50.80 | c | ----- | z | ----- | z | 66.03 | f | ||
1920 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 64.85 | m | 74.85 | 71.26 | 61.07 | 48.45 | 39.68 | ----- | z | 59.06 | g | |||||
1921 | ----- | z | ----- | z | ----- | z | ----- | z | 56.92 | 66.42 | 72.18 | 72.50 | 57.15 | 53.77 | a | ----- | z | ----- | z | 63.16 | f | |||||
1922 | ----- | z | ----- | z | ----- | z | 45.97 | 55.48 | 67.97 | 73.17 | b | 72.88 | c | 63.15 | j | 55.31 | ----- | z | ----- | z | 61.80 | f | ||||
1923 | ----- | z | ----- | z | ----- | z | 49.08 | 55.18 | a | 61.20 | 73.02 | 71.31 | 63.78 | 49.33 | a | ----- | z | ----- | z | 60.42 | e | |||||
1924 | ----- | z | ----- | z | ----- | z | ----- | z | 63.19 | 65.88 | 72.23 | 70.74 | 70.54 | r | ----- | z | ----- | z | ----- | z | 68.01 | h | ||||
1925 | ----- | z | ----- | z | ----- | z | ----- | z | 61.05 | 64.35 | 75.02 | 69.55 | a | ----- | z | ----- | z | ----- | z | ----- | z | 67.49 | h | |||
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 | 68.90 | a | 61.23 | 50.81 | 37.52 | 27.11 | 49.11 | g | ||||
1949 | 12.90 | 31.86 | 43.77 | 53.97 | 62.56 | 65.92 | 71.77 | 71.42 | 63.88 | 47.08 | 42.25 | 33.23 | 50.05 | |||||||||||||
1950 | 25.70 | a | 33.61 | 40.32 | 49.00 | 54.79 | 63.35 | 73.05 | 71.05 | 63.12 | 55.40 | 44.12 | e | 38.26 | 50.98 | |||||||||||
1951 | 32.00 | a | 38.23 | 38.94 | 52.85 | 57.81 | 63.37 | 74.65 | 68.91 | i | 62.85 | 50.65 | 39.08 | 30.16 | 49.14 | a | ||||||||||
1952 | 26.98 | 31.38 | 38.53 | 53.48 | 59.02 | 65.73 | 72.32 | 72.11 | 63.72 | 54.18 | 35.38 | 34.74 | 50.63 | |||||||||||||
1953 | 42.39 | 38.14 | 44.08 | 48.35 | 54.08 | 61.08 | 73.92 | 71.35 | a | 64.47 | 53.03 | 45.88 | 33.53 | 52.53 | ||||||||||||
1954 | 37.95 | 40.07 | 40.65 | a | 51.15 | 60.45 | 61.58 | 74.68 | 67.82 | 60.60 | 49.73 | a | 42.90 | 30.90 | 51.54 | |||||||||||
1955 | 25.70 | a | 29.86 | 38.47 | 46.17 | 54.92 | 65.98 | 69.81 | 72.69 | 61.23 | 52.40 | 36.32 | 37.11 | 49.22 | ||||||||||||
1956 | 33.95 | 28.78 | 43.50 | 52.29 | a | 61.03 | 64.45 | 73.68 | 68.50 | 61.80 | 49.35 | 34.83 | 30.98 | a | 50.26 | |||||||||||
1957 | 19.42 | 30.67 | a | 43.29 | 49.40 | 58.87 | 65.93 | 70.47 | 68.65 | 62.85 | 49.55 | 36.95 | 35.35 | 49.28 | ||||||||||||
1958 | 31.13 | 41.71 | 41.08 | 48.55 | 63.47 | 66.22 | 72.16 | 73.47 | 60.92 | 52.73 | a | 39.52 | 35.79 | 52.23 | ||||||||||||
1959 | 36.02 | 37.93 | 41.19 | j | 52.18 | 54.50 | 68.17 | 74.29 | 69.15 | 59.64 | a | 51.50 | 36.55 | 28.61 | 51.68 | a | ||||||||||
1960 | 23.42 | 34.53 | 43.18 | a | 51.63 | 55.44 | 67.75 | 76.48 | 67.79 | 64.18 | 50.42 | 41.03 | 29.47 | 50.44 | ||||||||||||
1961 | 30.37 | a | 40.91 | 45.52 | 49.95 | 59.02 | 71.27 | 74.34 | 74.56 | 57.32 | 48.48 | 36.21 | a | 29.74 | 51.47 | |||||||||||
1962 | 20.03 | 31.27 | 40.69 | 54.35 | 56.11 | 65.87 | 71.29 | 68.58 | 62.72 | 51.56 | 42.33 | 34.55 | 49.95 | |||||||||||||
1963 | 24.44 | 42.50 | 45.48 | 48.12 | 60.89 | 64.40 | a | 69.82 | 70.77 | a | 66.48 | 55.68 | 41.82 | 28.13 | 51.54 | |||||||||||
1964 | 26.98 | 29.03 | 39.66 | 48.37 | 55.77 | 63.40 | 72.63 | 67.50 | 59.42 | 51.68 | 38.87 | 35.50 | 49.07 | |||||||||||||
1965 | 32.55 | a | 37.62 | 39.65 | 52.90 | 55.97 | 64.98 | 71.50 | 68.55 | 56.63 | 53.06 | 43.83 | 30.56 | 50.65 | ||||||||||||
1966 | 35.08 | 35.39 | 44.66 | 50.62 | 61.95 | 64.00 | 71.61 | 70.11 | 66.20 | 50.00 | 44.02 | 33.03 | 52.22 | |||||||||||||
1967 | 36.58 | 39.46 | 43.58 | 45.42 | 58.31 | 65.95 | 75.32 | 74.97 | 67.52 | 50.52 | 41.72 | 29.82 | 52.43 | |||||||||||||
1968 | 29.40 | 40.71 | 46.65 | 48.18 | 58.24 | 66.67 | 74.23 | 67.37 | 61.65 | 49.97 | 40.33 | 34.35 | 51.48 | |||||||||||||
1969 | 32.18 | 33.84 | 41.15 | 52.77 | 62.37 | 66.03 | 71.94 | 71.15 | 63.35 | 47.53 | 39.35 | 34.52 | 51.35 | |||||||||||||
1970 | 36.95 | 39.98 | 42.81 | 46.13 | 58.00 | 67.88 | 73.27 | 72.73 | 57.78 | 48.08 | 42.22 | 32.35 | 51.52 | |||||||||||||
1971 | 33.06 | 37.80 | 40.31 | 50.42 | 60.26 | 63.23 | 72.15 | 74.74 | 58.82 | 50.31 | 39.43 | 31.63 | 51.01 | |||||||||||||
1972 | 29.05 | 34.26 | 46.03 | 49.73 | 60.74 | 67.28 | 71.00 | 72.55 | 58.48 | 52.35 | 40.65 | 23.68 | 50.48 | |||||||||||||
1973 | 30.33 | a | 38.14 | 44.56 | 50.38 | a | 61.45 | 66.67 | 73.89 | 72.21 | 61.98 | a | 51.85 | 41.33 | 37.12 | b | 52.49 | |||||||||
1974 | 29.60 | 38.96 | 43.98 | 51.28 | 56.10 | 69.97 | 71.39 | 71.16 | 64.15 | 51.34 | 41.70 | 32.15 | 51.81 | |||||||||||||
1975 | 26.82 | 35.84 | 41.75 | a | 44.92 | 56.42 | 63.87 | 76.06 | 67.97 | 63.65 | 53.08 | 39.45 | 32.87 | 50.22 | ||||||||||||
1976 | 32.35 | 35.91 | 39.29 | 49.10 | a | 61.63 | 63.42 | 73.55 | 67.35 | a | 63.55 | 50.79 | 39.78 | 28.44 | 50.43 | |||||||||||
1977 | 19.47 | 33.52 | 41.56 | 55.28 | 54.24 | 70.68 | 71.08 | 72.52 | 62.23 | 51.77 | 40.15 | 37.10 | 50.80 | |||||||||||||
1978 | 35.77 | 38.75 | 47.82 | 50.58 | 57.13 | 64.45 | 72.16 | 69.79 | 61.33 | 52.73 | 35.77 | 27.53 | 51.15 | |||||||||||||
1979 | 15.06 | 34.00 | 45.27 | 50.48 | 60.40 | 67.62 | 73.40 | 71.52 | 67.30 | 54.63 | 35.23 | 34.25 | a | 50.76 | ||||||||||||
1980 | 31.65 | 40.30 | a | 43.74 | 55.12 | 59.24 | 64.35 | 74.57 | a | 68.71 | 62.85 | 51.85 | 38.34 | a | 32.90 | 51.97 | ||||||||||
1981 | 34.00 | 37.48 | 45.37 | 52.33 | 58.56 | 65.17 | 71.31 | 74.44 | 64.93 | 50.00 | 43.82 | 35.34 | 52.73 | |||||||||||||
1982 | 27.71 | 32.59 | 44.32 | c | 48.79 | a | 59.17 | a | 66.08 | 71.18 | 72.87 | 61.69 | a | 51.82 | a | 36.03 | a | 30.66 | c | 50.24 | ||||||
1983 | 33.83 | a | 41.93 | a | 46.71 | 47.67 | a | 57.57 | a | 64.98 | a | 66.11 | c | 70.88 | b | 61.74 | a | 52.56 | 43.67 | c | 26.53 | a | 51.18 | |||
1984 | 22.95 | a | 31.24 | 43.71 | 48.73 | d | 56.67 | b | 63.65 | 73.60 | 72.94 | 58.59 | b | 46.74 | b | 39.57 | a | 22.80 | a | 48.43 | ||||||
1985 | 20.21 | 27.07 | 37.69 | 53.77 | 60.39 | 68.02 | 76.94 | 67.27 | ----- | z | 47.31 | 27.85 | 11.35 | 45.26 | a | |||||||||||
1986 | 25.44 | 39.48 | 48.48 | 50.43 | 58.84 | 71.18 | 68.68 | 74.83 | a | 58.93 | 51.76 | 42.50 | 28.27 | 51.57 | ||||||||||||
1987 | 28.02 | 38.29 | 45.97 | ----- | z | 63.81 | 69.07 | a | 70.19 | 69.74 | 64.66 | e | 54.35 | 41.55 | a | 33.05 | a | 52.61 | a | |||||||
1988 | 24.81 | 36.25 | a | 44.42 | 53.18 | 59.06 | 70.26 | a | 74.13 | 70.55 | a | 61.03 | 58.42 | 41.93 | 27.34 | 51.78 | ||||||||||
1989 | 21.44 | 19.96 | 43.19 | 53.77 | 56.81 | 67.48 | 74.02 | a | 69.35 | 63.27 | 50.55 | 38.98 | 29.95 | 49.06 | ||||||||||||
1990 | 34.08 | a | 33.98 | 46.15 | d | 56.71 | a | 57.39 | 66.82 | 73.15 | 72.05 | 69.17 | 51.90 | 41.06 | e | 22.00 | e | 52.04 | ||||||||
1991 | 23.41 | d | 39.09 | 44.66 | 50.16 | a | 55.79 | 63.43 | 74.40 | 74.44 | 66.35 | ----- | z | 39.48 | e | 33.64 | i | 53.12 | b | |||||||
1992 | 33.48 | e | 42.90 | e | 50.45 | a | 56.56 | d | 65.02 | 70.25 | f | 71.44 | 74.75 | e | 64.89 | b | 56.37 | h | 36.75 | 30.65 | 52.69 | b | ||||
1993 | 28.23 | i | 30.04 | d | 42.50 | a | 50.46 | d | 64.70 | a | 63.18 | e | 65.81 | d | 68.44 | g | 64.06 | c | 53.46 | g | 34.70 | c | 35.52 | a | 50.11 | c |
1994 | 34.40 | a | 35.57 | a | 50.81 | 55.86 | a | 62.75 | a | 67.66 | a | 76.40 | a | 75.87 | a | 67.28 | a | 53.68 | 34.76 | a | 30.82 | 53.82 | ||||
1995 | 37.67 | a | 43.09 | 46.25 | a | 51.71 | b | 59.87 | a | 64.65 | 72.71 | b | 70.07 | a | 66.21 | a | 51.56 | 46.18 | b | 34.82 | a | 53.73 | ||||
1996 | 35.60 | 37.66 | 46.77 | a | 52.67 | c | 57.71 | c | 66.52 | a | 75.86 | f | 72.85 | e | 60.83 | d | 53.94 | e | 42.88 | f | 38.48 | c | 52.30 | b | ||
1997 | 34.74 | d | 39.40 | d | 48.35 | d | 49.43 | h | 63.14 | c | 67.04 | c | 71.67 | d | 73.80 | d | 66.17 | d | 53.38 | e | 43.59 | a | ----- | z | 56.13 | b |
1998 | 39.67 | d | 40.94 | b | 45.81 | b | 50.48 | b | 57.48 | c | 64.17 | c | 77.78 | b | 75.75 | c | 68.72 | g | 53.59 | i | 44.42 | f | 32.11 | d | 53.80 | c |
1999 | 37.93 | i | 38.08 | b | 45.84 | i | 50.15 | d | 56.74 | d | 66.10 | d | 71.32 | f | 72.67 | e | 62.59 | h | 53.46 | h | 43.80 | o | 32.93 | j | 56.75 | g |
2000 | 34.90 | k | 43.47 | m | 44.91 | h | 55.15 | m | 60.04 | d | 67.28 | e | 74.28 | d | 72.81 | j | 62.75 | f | 53.05 | k | 36.46 | p | 31.61 | q | 67.20 | i |
2001 | 28.75 | m | 32.22 | j | 47.56 | n | 49.24 | m | 61.63 | h | 68.88 | j | 74.25 | e | 75.73 | g | 65.58 | k | 52.07 | q | 45.65 | q | 33.47 | n | 74.25 | k |
2002 | 33.98 | i | 35.74 | e | 43.61 | i | 52.75 | d | 59.41 | d | 68.22 | g | 77.19 | e | 69.80 | h | 64.79 | f | 51.69 | j | 40.28 | l | 37.12 | j | 56.27 | h |
2003 | 39.71 | n | 39.11 | j | 48.95 | k | 51.37 | d | 58.82 | f | 68.93 | g | 78.86 | f | 74.84 | f | 64.71 | d | 58.88 | n | 38.25 | p | 38.94 | m | 58.04 | j |
2004 | 29.40 | k | 38.12 | l | 49.75 | k | 53.41 | g | 59.00 | f | 67.54 | c | 75.95 | c | 73.36 | f | 62.21 | d | 55.10 | k | 40.56 | m | 36.47 | l | 68.57 | i |
2005 | 33.38 | k | 36.22 | j | 47.14 | j | 51.95 | j | 59.36 | f | 64.16 | e | 75.74 | d | 74.91 | h | 62.43 | c | 53.57 | i | 37.97 | l | 30.57 | p | 67.44 | i |
2006 | 37.47 | l | 38.93 | m | 45.59 | n | 53.59 | h | 61.79 | e | 68.71 | d | 78.88 | g | 72.10 | f | 63.52 | a | 52.19 | g | 43.12 | n | 33.00 | n | 64.67 | i |
2007 | 31.74 | l | 39.53 | k | 48.53 | o | 52.06 | e | 62.48 | e | 68.66 | e | 80.04 | d | 72.57 | d | 63.83 | f | 52.65 | n | 41.12 | n | 38.29 | s | 67.16 | g |
2008 | 30.31 | o | 38.81 | k | 42.89 | m | 46.36 | i | 59.12 | c | 65.68 | e | 75.20 | c | 73.63 | d | 62.43 | b | 51.29 | l | 41.67 | o | 32.07 | p | 67.21 | g |
2009 | 30.78 | o | 34.48 | d | 40.64 | c | 49.69 | f | 59.87 | e | 65.56 | f | 74.39 | d | 72.17 | d | 68.30 | e | 48.07 | c | 39.58 | 24.10 | k | 54.69 | d | |
2010 | 35.86 | b | 38.12 | 45.10 | 48.61 | c | 53.61 | 65.38 | 72.65 | 70.79 | 63.80 | 55.87 | 38.95 | 32.32 | 51.76 | |||||||||||
2011 | 29.89 | 35.66 | 43.76 | 45.75 | 55.18 | 62.53 | 71.36 | b | 74.89 | 67.53 | a | 53.71 | 39.07 | 29.63 | 50.75 | |||||||||||
2012 | 34.42 | 37.76 | 46.18 | a | 53.25 | 58.60 | 67.45 | 77.61 | 75.08 | a | 66.57 | b | 53.10 | 45.05 | 37.29 | 54.36 | ||||||||||
2013 | 18.65 | 38.33 | a | 47.29 | 53.05 | 62.61 | 70.25 | 80.05 | 77.31 | 68.35 | c | 50.92 | 39.58 | 23.27 | 52.47 | |||||||||||
2014 | 31.20 | k | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 29.54 | 36.14 | 43.79 | 50.91 | 58.99 | 66.00 | 73.26 | 71.58 | 63.01 | 51.60 | 39.70 | 31.28 | 51.23 | |||||||||||||
S.D. | 6.52 | 4.45 | 3.04 | 2.85 | 2.97 | 2.42 | 2.62 | 2.45 | 2.90 | 2.42 | 3.45 | 4.83 | 1.28 | |||||||||||||
SKEW | -0.51 | -1.00 | 0.01 | -0.06 | 0.25 | 0.18 | -0.06 | 0.02 | -0.09 | 0.17 | -0.68 | -1.47 | 0.15 | |||||||||||||
MAX | 42.39 | 43.09 | 50.81 | 56.71 | 66.18 | 71.27 | 80.05 | 77.31 | 69.17 | 58.42 | 46.18 | 38.48 | 54.36 | |||||||||||||
MIN | 12.90 | 19.96 | 37.69 | 44.92 | 53.61 | 61.08 | 65.81 | 67.27 | 56.63 | 46.74 | 27.85 | 11.35 | 48.43 | |||||||||||||
YRS | 53 | 57 | 54 | 59 | 68 | 67 | 69 | 65 | 65 | 57 | 57 | 53 | 44 |