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 | 41.62 | t | 40.29 | 44.27 | 48.97 | 62.50 | 67.23 | 63.65 | 58.63 | 49.39 | 35.07 | 32.03 | 50.20 | b | ||||||||||
1958 | 30.10 | 36.25 | 35.58 | 42.00 | 56.29 | 63.33 | 68.48 | 67.35 | 61.36 | h | 49.14 | b | 36.77 | 31.71 | 47.00 | a | ||||||||||
1959 | 30.61 | 31.89 | 37.81 | 48.00 | 51.26 | 64.10 | 67.03 | 63.87 | 58.37 | 49.00 | f | 37.00 | 33.23 | 47.56 | a | |||||||||||
1960 | 26.52 | 29.17 | 41.45 | 44.89 | b | 53.52 | b | 65.59 | a | 68.39 | 66.90 | a | 61.17 | 48.36 | f | 35.57 | b | 29.67 | d | 47.53 | a | |||||
1961 | 31.06 | 34.71 | 38.07 | a | 45.13 | 52.42 | 65.30 | 66.61 | 64.97 | 56.67 | 45.77 | 36.18 | b | 29.55 | 47.20 | |||||||||||
1962 | 29.19 | 34.50 | 32.77 | 47.24 | a | 50.77 | 60.30 | 66.68 | 66.74 | 61.53 | 49.19 | 40.45 | a | 33.29 | 47.72 | |||||||||||
1963 | 27.61 | 38.07 | 37.83 | a | 42.73 | 56.52 | 58.97 | 70.68 | 65.55 | 60.67 | 52.32 | 39.10 | a | 28.88 | e | 48.24 | ||||||||||
1964 | 26.00 | 26.68 | d | 32.44 | d | 39.62 | a | 49.87 | a | 57.68 | h | 68.88 | e | 64.08 | f | 60.78 | g | 52.39 | c | 34.04 | b | 28.20 | k | 41.24 | d | |
1965 | 31.84 | f | 31.29 | 34.19 | e | 42.08 | e | 48.26 | h | 55.42 | f | 66.64 | f | 63.50 | i | 52.42 | d | 45.36 | i | 36.33 | f | 30.67 | j | 40.00 | h | |
1966 | 26.47 | l | 26.25 | h | 38.83 | g | 46.28 | l | 52.82 | i | 59.71 | f | 65.17 | g | 62.32 | i | 57.53 | k | 45.62 | j | 37.55 | j | 29.50 | i | ----- | z |
1967 | 26.13 | h | 28.43 | g | 37.00 | j | 37.41 | h | 49.04 | h | 56.76 | e | 65.00 | h | 62.52 | d | 56.80 | j | 42.18 | n | 35.78 | l | 23.35 | k | 59.64 | j |
1968 | 27.04 | e | 37.50 | g | 36.62 | e | 39.40 | j | 48.32 | f | 58.59 | h | 61.00 | n | 57.45 | i | 52.60 | j | 42.10 | j | 35.97 | 25.45 | 31.27 | h | ||
1969 | 35.55 | 31.50 | 33.71 | 43.50 | 51.13 | 58.60 | 66.90 | 66.74 | 59.17 | 43.74 | 37.20 | 31.10 | 46.57 | |||||||||||||
1970 | 28.16 | 36.04 | 37.42 | 37.43 | 51.55 | 59.00 | 66.77 | 65.87 | 53.20 | 42.47 | a | 29.77 | 28.45 | 44.68 | ||||||||||||
1971 | 27.39 | 32.11 | 37.39 | 41.20 | 47.67 | a | 59.00 | 66.33 | a | 64.77 | 58.50 | 42.74 | 33.07 | 30.06 | 45.02 | |||||||||||
1972 | 26.19 | 31.79 | 40.71 | 43.57 | 50.63 | a | 58.93 | 66.06 | 62.84 | 55.67 | 47.39 | 32.07 | 25.87 | 45.14 | ||||||||||||
1973 | 25.52 | 32.43 | 31.90 | a | 37.33 | c | 51.65 | 60.30 | 66.10 | b | 65.21 | c | 56.56 | c | 44.92 | g | 35.04 | d | 28.04 | f | 46.20 | b | ||||
1974 | 29.58 | 28.89 | 39.13 | 41.93 | 52.59 | b | 64.80 | 64.03 | 62.84 | 57.37 | 50.25 | c | 35.35 | d | 24.81 | e | 45.96 | |||||||||
1975 | 26.30 | h | 30.36 | 33.97 | 36.91 | g | 47.35 | h | 57.22 | g | 63.82 | i | 63.77 | 58.87 | 44.55 | 35.41 | a | 30.42 | 42.48 | e | ||||||
1976 | 27.94 | 35.66 | 34.68 | 41.53 | 53.06 | 59.80 | 65.77 | 63.10 | 59.23 | 44.77 | 35.37 | 27.45 | 45.70 | |||||||||||||
1977 | 29.94 | 31.14 | 33.48 | 44.03 | 46.74 | 61.80 | 67.84 | 66.42 | 59.17 | 49.42 | 36.80 | 34.29 | 46.76 | |||||||||||||
1978 | 33.94 | 34.32 | 40.74 | 43.33 | 49.42 | 60.90 | 67.48 | 62.58 | 57.80 | 51.61 | 37.90 | i | 25.42 | 47.96 | a | |||||||||||
1979 | 26.71 | c | 30.71 | 34.97 | 42.83 | 51.00 | 55.40 | 65.94 | 61.26 | 59.20 | 47.55 | 31.60 | 29.77 | 44.75 | ||||||||||||
1980 | 34.84 | 35.41 | 35.10 | a | 42.27 | 46.47 | a | 60.00 | 66.90 | 64.58 | 56.93 | 44.10 | 32.70 | 32.92 | e | 46.02 | ||||||||||
1981 | 32.16 | 31.68 | 36.87 | 46.77 | 51.61 | 63.90 | 66.74 | 64.68 | 57.47 | 44.52 | 35.67 | 30.94 | 46.92 | |||||||||||||
1982 | 28.74 | 34.29 | 39.87 | 46.03 | 51.74 | 59.23 | 65.97 | 66.58 | 58.57 | 41.45 | 37.20 | 32.03 | 46.81 | |||||||||||||
1983 | 29.74 | 34.11 | 37.32 | 38.37 | 50.39 | 58.97 | 67.10 | 65.23 | 62.64 | b | 48.61 | 36.83 | 36.23 | a | 47.13 | |||||||||||
1984 | 32.19 | 32.52 | 40.87 | 45.87 | 59.42 | 63.00 | 66.30 | a | 63.94 | 60.70 | 44.55 | 34.67 | 32.74 | 48.06 | ||||||||||||
1985 | 30.48 | 30.70 | a | 37.71 | 47.40 | 52.68 | 62.67 | 68.10 | 65.45 | 54.50 | 48.39 | 36.63 | 28.35 | 46.92 | ||||||||||||
1986 | 32.71 | 36.39 | 40.26 | 43.70 | 52.58 | 61.53 | 64.93 | b | 66.03 | 55.43 | 44.33 | a | 35.47 | 30.06 | 46.95 | |||||||||||
1987 | 27.93 | a | 33.14 | 34.30 | a | 45.72 | a | 51.45 | 61.77 | 63.65 | 63.16 | 57.57 | 51.13 | 35.07 | 28.17 | a | 46.09 | |||||||||
1988 | 29.68 | 34.21 | a | 35.52 | 44.07 | 50.39 | c | 62.72 | a | 67.19 | 65.14 | b | 51.83 | 52.32 | 36.67 | 24.71 | g | 48.16 | a | |||||||
1989 | 28.58 | 33.68 | 42.15 | d | 49.93 | b | 54.03 | 61.63 | 67.84 | 63.29 | 56.20 | e | 46.90 | 36.27 | 27.00 | q | 49.14 | a | ||||||||
1990 | 27.60 | a | 31.85 | a | 39.93 | a | 47.80 | 51.10 | 62.03 | 64.93 | a | 63.23 | 60.93 | 45.71 | 35.23 | 25.61 | 46.33 | |||||||||
1991 | 30.55 | 35.18 | 35.50 | a | 44.73 | 51.45 | 60.27 | 68.38 | b | 67.06 | 60.30 | c | 50.06 | 36.41 | a | 34.74 | d | 47.89 | ||||||||
1992 | 28.50 | u | 39.17 | k | 41.32 | l | 49.73 | h | 54.69 | e | 58.33 | f | 65.10 | b | 63.81 | 60.30 | 46.87 | a | 31.37 | 26.87 | a | 49.86 | e | |||
1993 | 33.72 | b | 36.52 | a | 41.03 | a | 46.74 | c | 57.30 | a | 61.17 | 66.04 | d | 68.43 | q | 56.21 | p | 48.59 | i | 35.00 | h | 26.95 | k | 48.93 | e | |
1994 | 31.24 | b | 33.80 | c | 42.17 | b | 47.52 | a | 55.11 | l | 67.70 | g | 67.46 | e | 67.87 | 60.20 | 46.45 | 35.27 | 33.32 | i | 48.00 | c | ||||
1995 | 33.29 | g | 36.71 | g | 39.31 | o | 42.70 | j | 49.88 | g | 59.36 | e | 66.72 | f | 69.00 | d | 61.21 | f | 44.00 | i | 39.21 | k | 33.44 | o | 64.18 | j |
1996 | 27.58 | g | 38.07 | b | 37.31 | r | 45.83 | f | 57.54 | r | 63.00 | r | 68.52 | h | 67.85 | k | 57.57 | g | 43.04 | h | 35.40 | j | 29.62 | j | 38.07 | k |
1997 | 30.95 | i | 33.27 | q | 37.87 | h | 41.50 | l | 57.33 | v | 60.25 | r | 64.43 | h | 70.67 | y | 62.74 | g | 49.06 | m | 26.31 | n | 29.75 | o | ----- | z |
1998 | 30.47 | n | 33.11 | i | 40.00 | k | 44.38 | i | 53.06 | n | 57.29 | p | 69.95 | j | ----- | z | ----- | z | 44.27 | t | 34.93 | o | 29.60 | p | ----- | z |
1999 | 30.18 | n | 30.93 | m | 38.93 | q | 41.44 | u | 51.83 | s | 64.30 | t | 64.82 | t | 62.27 | t | 56.11 | u | 41.33 | y | 33.00 | t | 27.27 | p | ----- | z |
2000 | 32.44 | v | 36.79 | o | 37.31 | r | 47.70 | t | 55.92 | r | 64.08 | r | 68.43 | x | 67.11 | v | 60.37 | k | 47.96 | h | 30.50 | j | 29.28 | m | ----- | z |
2001 | 30.61 | m | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2002 | ----- | z | ----- | z | 34.00 | k | 45.20 | e | 49.24 | b | 58.33 | 67.59 | d | 65.59 | n | 56.04 | e | 44.00 | h | 35.12 | e | 28.58 | g | 51.92 | f | |
2003 | 32.80 | f | 32.37 | i | 35.04 | g | ----- | z | ----- | z | 57.97 | 67.89 | m | 66.33 | a | 56.04 | g | 48.74 | l | 32.07 | b | 24.32 | i | 52.12 | i | |
2004 | 26.95 | i | 29.00 | c | 40.62 | b | 41.89 | c | 48.13 | a | 54.07 | 62.19 | 60.30 | a | 53.29 | f | 44.62 | b | 32.96 | g | 28.17 | g | 47.60 | d | ||
2005 | 32.62 | j | 35.79 | i | 34.92 | g | 39.29 | b | 48.94 | 53.46 | b | 63.33 | a | 62.83 | a | 52.96 | e | 45.30 | a | 32.88 | d | 23.92 | f | 49.87 | d | |
2006 | 22.90 | j | 27.77 | b | 33.00 | k | ----- | z | ----- | z | 59.65 | g | 66.93 | a | 63.97 | a | 52.77 | 41.86 | c | 32.52 | a | 23.33 | d | 44.16 | e | |
2007 | 24.29 | g | 29.85 | h | 36.23 | e | 43.05 | h | 50.07 | d | 54.87 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 47.06 | i | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 29.66 | 32.94 | 37.31 | 43.78 | 51.58 | 60.33 | 66.59 | 64.72 | 57.70 | 46.97 | 35.13 | 29.78 | 46.52 | |||||||||||||
S.D. | 2.65 | 2.79 | 2.98 | 3.05 | 2.82 | 2.98 | 1.64 | 1.90 | 2.81 | 3.20 | 2.19 | 3.24 | 1.06 | |||||||||||||
SKEW | 0.48 | -0.18 | -0.02 | -0.30 | 0.70 | -0.41 | -0.43 | 0.00 | -0.48 | 0.14 | -0.27 | -0.08 | -0.20 | |||||||||||||
MAX | 35.55 | 38.07 | 42.17 | 49.93 | 59.42 | 65.59 | 70.68 | 69.00 | 62.64 | 52.39 | 40.45 | 36.23 | 48.24 | |||||||||||||
MIN | 25.52 | 26.68 | 31.90 | 37.33 | 46.47 | 53.46 | 62.19 | 60.30 | 51.83 | 41.45 | 29.77 | 23.33 | 44.68 | |||||||||||||
YRS | 32 | 36 | 37 | 36 | 36 | 37 | 37 | 38 | 35 | 33 | 37 | 30 | 21 |