YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1914 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 42.45 | s | 26.77 | 26.77 | k | |
1915 | 25.23 | 36.12 | x | 39.65 | a | 49.58 | 52.63 | 64.15 | 69.10 | a | 69.56 | 62.26 | a | 53.56 | 39.42 | 32.17 | a | 50.66 | a | |||||||
1916 | 30.04 | e | 36.83 | 43.39 | 47.77 | 54.42 | 65.72 | 68.73 | 67.45 | 63.18 | 51.31 | 38.43 | ----- | z | 51.57 | a | ||||||||||
1917 | ----- | z | ----- | z | ----- | z | 47.77 | d | 52.30 | a | 67.08 | 75.31 | b | 70.48 | 63.22 | 53.44 | 44.21 | a | 37.37 | 56.80 | c | |||||
1918 | 27.77 | a | 33.67 | a | 42.85 | 45.58 | 54.97 | a | 70.83 | 68.98 | 68.69 | 62.83 | 49.42 | ----- | z | ----- | z | 52.56 | b | |||||||
1919 | ----- | z | ----- | z | 40.40 | 46.35 | ----- | z | ----- | z | ----- | z | ----- | z | 63.73 | 47.33 | a | 58.47 | a | ----- | z | 51.26 | g | |||
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 | 65.25 | b | 54.50 | q | 36.60 | 29.47 | 43.77 | i | ||
1952 | 30.87 | 31.18 | a | 34.38 | a | 48.97 | 56.46 | g | 68.98 | e | 72.12 | r | 70.55 | 64.83 | 57.13 | 33.48 | 29.95 | 47.03 | b | |||||||
1953 | 35.93 | a | 32.57 | a | 41.68 | 45.72 | e | 51.55 | t | 69.62 | 74.03 | 69.97 | 67.48 | 52.81 | 43.24 | a | 28.48 | 51.05 | a | |||||||
1954 | 35.27 | 40.18 | 38.44 | 55.02 | b | 60.41 | b | 68.05 | 73.60 | g | 69.76 | b | 64.48 | 54.40 | 43.64 | a | 30.71 | g | 52.97 | b | ||||||
1955 | 25.50 | e | 25.50 | a | 38.16 | 48.22 | a | 54.80 | a | 65.96 | e | 68.77 | 68.45 | 61.38 | 56.47 | 38.84 | e | 37.39 | 49.12 | |||||||
1956 | 37.32 | 30.43 | 41.68 | 48.52 | c | 60.61 | c | 70.96 | b | 70.91 | c | 68.58 | g | 64.78 | 53.71 | 33.40 | i | 28.38 | n | 53.21 | c | |||||
1957 | 31.85 | 39.62 | 42.46 | f | 44.30 | 54.71 | b | 68.02 | i | 76.65 | h | 71.10 | 63.82 | 51.85 | e | 33.24 | g | 34.87 | h | 51.04 | e | |||||
1958 | 29.57 | h | 37.95 | h | 35.60 | f | 46.02 | i | 61.13 | l | 69.33 | c | ----- | z | ----- | z | 61.35 | j | 51.78 | f | 39.75 | d | 42.54 | s | 54.54 | j |
1959 | 32.58 | e | 34.68 | i | 43.98 | f | 51.82 | b | 58.00 | o | 71.35 | q | 74.06 | 68.56 | 63.38 | 50.15 | h | 38.04 | f | 31.14 | x | 58.08 | g | |||
1960 | ----- | z | ----- | z | 42.28 | h | 49.50 | u | ----- | z | 70.71 | f | 74.64 | q | 76.33 | y | ----- | z | 50.29 | e | ----- | z | ----- | z | 50.29 | k |
1961 | 28.10 | b | 37.86 | g | 39.62 | b | 47.78 | g | 57.92 | f | 69.78 | c | 72.62 | c | 69.95 | c | 60.48 | 51.66 | b | 38.75 | b | 27.33 | d | 50.92 | c | |
1962 | 24.04 | h | 35.35 | e | 35.30 | k | 53.62 | e | ----- | z | 68.26 | k | 71.79 | c | 71.98 | e | 64.60 | e | 54.10 | f | 45.76 | i | 34.80 | f | 59.47 | g |
1963 | 23.78 | b | 37.50 | c | 42.13 | d | 49.00 | c | 61.98 | b | 67.02 | b | 75.33 | b | 69.35 | a | 66.19 | c | 59.03 | b | 43.29 | a | 30.88 | c | 52.12 | |
1964 | 29.07 | b | 25.90 | 34.45 | a | 44.74 | a | 57.00 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 39.57 | ----- | z | 38.45 | f | |||
1965 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 69.75 | a | 59.38 | 54.92 | ----- | z | ----- | z | 61.35 | i | ||
1966 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 30.78 | b | 30.78 | k |
1967 | 30.70 | a | 36.73 | 46.74 | 47.69 | a | 55.43 | a | 63.88 | 73.38 | a | 69.73 | a | ----- | z | 54.33 | s | 47.05 | b | ----- | z | 52.37 | c | |||
1968 | ----- | z | ----- | z | ----- | z | 49.15 | g | 55.76 | 68.42 | 69.45 | 64.63 | a | 59.62 | 45.21 | g | 34.67 | 22.15 | a | 53.53 | e | |||||
1969 | 26.60 | 25.12 | 29.73 | 45.55 | 55.08 | 59.85 | 69.68 | 69.34 | 63.81 | a | 45.08 | a | 36.65 | 32.17 | b | 46.56 | ||||||||||
1970 | 26.90 | a | 36.73 | 35.06 | 41.03 | 58.08 | a | 65.13 | 72.65 | 72.08 | a | 59.43 | 45.61 | 40.03 | 32.16 | 48.74 | ||||||||||
1971 | 34.18 | c | 31.45 | 40.97 | n | 47.03 | 54.68 | 66.22 | 74.30 | u | 69.19 | b | 59.84 | a | 48.03 | 37.92 | 28.82 | 47.74 | b | |||||||
1972 | 30.87 | a | 36.90 | 46.98 | 49.95 | a | 56.87 | a | 66.40 | a | 74.84 | 70.58 | 64.13 | 52.24 | 35.20 | e | 27.18 | 51.01 | ||||||||
1973 | 23.06 | 30.65 | a | 34.58 | a | 42.42 | 55.79 | 64.98 | 72.48 | 70.56 | 61.45 | 53.27 | 42.03 | 31.97 | a | 48.60 | ||||||||||
1974 | 25.10 | a | 27.46 | c | 44.70 | a | 46.17 | 60.56 | 70.03 | 66.39 | 64.23 | a | 59.25 | 53.50 | 38.38 | a | 25.16 | 48.41 | ||||||||
1975 | 26.40 | b | ----- | z | 35.15 | 40.17 | 51.35 | 61.77 | 69.56 | 68.48 | 60.77 | 50.56 | 35.82 | 26.98 | 47.91 | a | ||||||||||
1976 | 24.89 | 35.98 | 35.69 | 45.83 | 55.74 | 63.87 | 70.28 | b | 67.37 | 59.85 | 46.21 | 38.90 | 29.66 | 47.86 | ||||||||||||
1977 | 24.50 | 34.17 | b | 35.76 | 49.83 | 54.98 | 70.00 | 72.27 | 71.45 | c | 64.27 | 54.05 | 41.37 | ----- | z | 52.06 | a | |||||||||
1978 | 31.37 | 32.32 | 42.58 | 49.10 | 53.63 | a | 68.06 | f | 73.82 | l | 70.72 | h | 62.36 | e | 54.63 | e | 39.90 | 23.85 | 43.31 | c | ||||||
1979 | 22.17 | a | 29.46 | ----- | z | 46.60 | 53.61 | 64.24 | a | ----- | z | 70.29 | 65.68 | 55.89 | 33.92 | 30.79 | 47.27 | b | ||||||||
1980 | 30.22 | a | 35.89 | a | 36.42 | 44.90 | a | 52.81 | 67.61 | c | 74.35 | 69.48 | f | 63.85 | 50.00 | 40.57 | 37.52 | c | 48.56 | a | ||||||
1981 | 34.81 | 35.77 | 38.81 | 52.55 | 56.65 | 70.10 | 72.87 | 71.60 | 63.97 | 51.13 | a | 43.80 | 33.97 | 52.17 | ||||||||||||
1982 | 28.89 | 30.50 | b | 39.95 | b | 47.55 | a | 54.82 | 64.70 | c | 70.47 | 69.83 | a | 63.72 | 48.16 | b | ----- | z | 31.88 | k | 51.86 | b | ||||
1983 | 29.61 | h | 54.06 | t | 39.02 | d | 42.03 | 53.31 | b | 63.95 | 71.65 | a | 70.02 | b | 65.57 | 52.63 | 39.29 | d | 33.65 | 53.11 | b | |||||
1984 | 27.12 | b | 32.07 | 39.27 | 43.52 | 61.84 | 65.67 | 72.00 | a | 69.39 | 64.16 | a | 45.21 | g | 42.08 | k | 31.70 | c | 50.67 | b | ||||||
1985 | 25.98 | a | 26.94 | d | 40.67 | d | 51.50 | c | 59.92 | a | 68.93 | a | 74.20 | f | 72.26 | b | 60.24 | a | 52.78 | a | 39.65 | 33.07 | a | 48.36 | a | |
1986 | 37.16 | 37.57 | 45.06 | 49.90 | o | 56.52 | d | 67.69 | a | 70.37 | 72.07 | a | 60.70 | 49.07 | a | 39.05 | 31.78 | b | 51.55 | a | ||||||
1987 | ----- | z | 32.46 | a | 36.74 | 49.77 | 56.42 | a | 68.58 | e | 71.10 | 68.65 | 62.92 | 55.35 | 37.78 | a | 29.53 | 51.75 | a | |||||||
1988 | 23.87 | 32.80 | b | 38.65 | a | 46.64 | a | 56.73 | 68.62 | a | 72.71 | 69.92 | a | 60.55 | b | 57.19 | b | 40.08 | 28.29 | 49.67 | ||||||
1989 | 26.20 | a | 33.07 | a | 45.55 | 55.20 | b | 59.85 | 67.41 | a | 75.00 | a | 69.92 | 65.60 | a | 53.05 | b | 39.95 | 30.03 | a | 51.74 | |||||
1990 | 28.07 | a | 32.11 | a | 41.61 | 50.10 | 56.26 | ----- | z | 72.34 | 69.47 | 64.45 | a | 51.45 | a | 39.28 | a | 23.55 | a | 48.06 | a | |||||
1991 | 23.76 | b | 34.43 | a | 38.02 | 46.16 | a | 56.84 | 64.84 | a | 71.37 | 70.60 | b | 63.50 | 54.58 | 37.07 | 25.81 | 48.91 | ||||||||
1992 | 21.95 | 34.45 | a | 42.18 | 52.66 | a | 57.65 | 63.88 | a | 69.00 | a | 69.15 | 63.87 | 55.03 | 32.90 | 24.90 | a | 48.97 | ||||||||
1993 | 32.84 | b | 34.82 | 41.62 | b | 47.58 | 58.70 | a | 66.10 | a | 71.92 | 69.63 | 62.42 | 50.27 | 35.30 | 29.53 | 50.06 | |||||||||
1994 | 32.37 | 32.11 | a | 43.36 | c | 47.45 | a | 57.50 | 71.24 | a | 74.63 | 73.63 | 64.75 | 50.18 | a | 35.80 | c | 32.21 | 51.27 | |||||||
1995 | 29.77 | a | 41.61 | 41.98 | 44.19 | a | 52.60 | 64.98 | c | 72.26 | b | 73.21 | 65.63 | 50.48 | 44.37 | 33.60 | 51.22 | |||||||||
1996 | 32.08 | 39.14 | 40.56 | 48.78 | 62.12 | a | 70.64 | a | 74.22 | a | 72.87 | 59.83 | a | 49.55 | a | 39.22 | e | ----- | z | 53.55 | a | |||||
1997 | 27.90 | a | 33.48 | a | 44.05 | ----- | z | 59.45 | b | 68.00 | a | 71.90 | a | 69.60 | 55.38 | q | 53.48 | a | 41.68 | b | 28.11 | 49.76 | b | |||
1998 | 32.37 | a | 32.62 | k | 36.81 | j | 42.09 | g | 56.95 | i | 64.94 | l | 73.25 | i | 72.14 | q | 67.04 | p | 51.56 | d | 41.50 | e | 29.08 | g | 41.81 | i |
1999 | 36.76 | l | 37.15 | e | 46.50 | g | 45.76 | i | 53.76 | h | ----- | z | 70.37 | p | 69.35 | r | 62.45 | h | 55.07 | i | 47.12 | d | 31.29 | g | 42.13 | j |
2000 | 37.47 | m | 39.83 | k | 40.82 | f | 53.85 | q | ----- | z | 72.05 | k | 76.86 | q | 72.70 | p | 65.85 | m | 52.15 | h | 34.44 | m | 36.44 | m | ----- | z |
2001 | 27.94 | n | 35.05 | i | 37.50 | y | 55.44 | u | 59.76 | n | 70.80 | y | 73.56 | v | 70.50 | v | 67.97 | o | 55.89 | l | 45.41 | n | 28.19 | w | ----- | z |
2002 | 32.20 | u | 31.73 | q | 47.12 | w | 53.00 | x | ----- | z | ----- | z | ----- | z | ----- | z | 65.74 | k | 52.67 | m | 53.03 | m | ----- | z | ----- | z |
2003 | 37.50 | t | 31.94 | t | ----- | z | 47.06 | u | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2004 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2005 | ----- | z | 37.33 | s | 40.65 | k | 48.42 | r | 55.10 | k | 65.02 | a | 74.48 | e | 70.04 | c | 65.57 | 52.98 | e | 41.10 | d | 30.40 | e | 57.08 | e | |
2006 | 33.36 | b | 35.33 | b | 38.89 | d | 50.12 | a | ----- | z | 70.93 | b | 74.55 | c | 70.12 | c | 59.06 | c | 50.57 | a | 42.86 | a | 30.50 | b | 50.57 | a |
2007 | 24.60 | a | 36.43 | a | ----- | z | 49.02 | j | 58.73 | 69.46 | d | 74.95 | 71.95 | 65.10 | a | 52.55 | b | 44.70 | c | 32.94 | m | 55.39 | c | |||
2008 | 26.90 | k | 31.46 | e | 38.97 | b | 47.33 | 54.37 | a | 67.22 | a | 72.73 | a | 71.60 | e | 66.26 | k | 52.02 | d | 45.25 | d | 31.57 | b | 51.25 | b | |
2009 | 30.78 | d | 35.60 | c | 43.37 | e | ----- | z | 61.47 | 64.82 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 47.21 | g | ||
2010 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 69.32 | h | 74.13 | 69.21 | s | ----- | z | ----- | z | ----- | z | ----- | z | 74.13 | k | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 28.98 | 33.66 | 39.97 | 47.70 | 56.59 | 67.01 | 72.08 | 69.98 | 63.00 | 52.09 | 40.16 | 30.03 | 49.78 | |||||||||||||
S.D. | 4.12 | 3.88 | 3.73 | 3.39 | 2.87 | 2.66 | 2.20 | 1.82 | 2.20 | 3.01 | 4.35 | 3.60 | 1.66 | |||||||||||||
SKEW | 0.21 | -0.35 | -0.33 | 0.09 | 0.34 | -0.33 | -0.41 | -0.82 | -0.31 | -0.22 | 1.49 | 0.01 | -0.07 | |||||||||||||
MAX | 37.32 | 41.61 | 46.98 | 55.20 | 62.12 | 71.24 | 75.33 | 73.63 | 67.48 | 59.03 | 58.47 | 37.52 | 52.17 | |||||||||||||
MIN | 21.95 | 25.13 | 29.73 | 40.17 | 51.35 | 59.85 | 66.39 | 64.23 | 59.06 | 45.08 | 32.90 | 22.15 | 46.56 | |||||||||||||
YRS | 45 | 44 | 43 | 45 | 44 | 46 | 43 | 47 | 49 | 48 | 48 | 40 | 16 |