YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1899 | -32.48 | -16.11 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 40.90 | 19.43 | k | -5.48 | d | -26.04 | d | -7.84 | g | |||
1900 | -32.52 | -17.28 | a | 0.53 | p | 11.92 | l | 44.28 | a | 58.59 | b | 64.19 | 53.57 | a | 42.62 | i | 17.66 | b | -10.95 | a | -27.26 | n | 22.19 | d | ||
1901 | ----- | z | -10.75 | v | 1.68 | 16.69 | a | 33.68 | a | 58.58 | ----- | z | ----- | z | 34.47 | o | 18.68 | -3.05 | b | -20.93 | c | 15.05 | e | |||
1902 | ----- | z | ----- | z | ----- | z | 29.64 | w | 53.32 | t | ----- | z | ----- | z | 59.23 | r | 40.68 | p | 30.06 | v | ----- | z | ----- | z | ----- | z |
1903 | ----- | z | ----- | z | ----- | z | 28.28 | u | ----- | z | 68.00 | u | ----- | z | ----- | z | ----- | z | 13.13 | h | -13.41 | h | -6.84 | o | ----- | z |
1904 | -21.79 | x | ----- | z | ----- | z | ----- | z | 46.62 | o | 56.62 | f | 61.38 | e | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 61.38 | k |
1905 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1906 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1907 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1908 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1909 | -36.87 | e | -24.64 | c | 2.90 | 16.62 | a | 43.02 | 58.77 | 62.23 | c | 51.92 | a | 43.55 | t | ----- | z | ----- | z | ----- | z | 21.74 | d | |||
1910 | -31.94 | m | -26.35 | b | -3.36 | b | 18.88 | a | 42.16 | c | 60.91 | g | 60.15 | h | 50.25 | i | ----- | z | ----- | z | ----- | z | ----- | z | 7.83 | h |
1911 | ----- | z | ----- | z | ----- | z | ----- | z | 45.43 | j | 68.38 | f | 67.25 | e | 51.34 | i | 38.11 | h | 23.28 | h | -4.89 | u | -14.58 | r | 67.25 | k |
1912 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1913 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 11.96 | c | ----- | z | ----- | z | 11.96 | k |
1914 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 32.68 | p | 22.86 | b | -4.54 | c | -7.58 | f | 9.16 | j |
1915 | -18.17 | a | -11.18 | 6.05 | b | 29.65 | 47.77 | c | 60.68 | 66.42 | m | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 19.13 | f | |||
1916 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1917 | ----- | z | 7.00 | r | ----- | z | ----- | z | ----- | z | 56.48 | 55.60 | 55.21 | 42.64 | a | 17.10 | a | -16.69 | a | ----- | z | 35.06 | f | |||
1918 | -21.88 | a | -13.75 | b | -5.92 | 19.07 | 40.88 | a | 53.90 | a | 62.56 | 55.98 | 44.93 | 16.82 | -11.00 | -22.00 | 18.30 | |||||||||
1919 | -20.40 | b | -10.70 | -6.29 | 23.74 | a | 42.37 | 52.95 | 63.78 | a | 58.55 | 44.32 | 20.19 | b | -11.78 | -16.93 | c | 19.98 | ||||||||
1920 | -25.66 | b | 1.83 | c | -3.70 | a | 16.63 | 40.10 | 60.83 | 62.57 | a | 56.63 | 41.55 | a | 15.08 | 0.88 | i | -23.59 | b | 22.03 | a | |||||
1921 | -36.21 | b | -18.98 | b | 3.25 | c | 21.83 | 42.43 | a | ----- | z | ----- | z | ----- | z | 36.60 | j | 20.10 | -11.28 | -10.17 | d | 1.37 | d | |||
1922 | -14.72 | a | -13.81 | a | -5.63 | 25.07 | c | 37.73 | 55.85 | 55.34 | ----- | z | 34.88 | m | 23.29 | -1.79 | a | -22.38 | b | 13.89 | b | |||||
1923 | -30.92 | -5.69 | a | -0.67 | b | 17.48 | e | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 29.48 | 0.16 | a | -29.11 | -2.75 | e | |||
1924 | -14.95 | a | -20.07 | a | 13.07 | a | 8.35 | 42.11 | 58.08 | 59.13 | 53.18 | 37.57 | 13.61 | ----- | z | -23.27 | 20.62 | a | ||||||||
1925 | -37.90 | -30.09 | -3.79 | 24.72 | 47.21 | 60.22 | 59.87 | 56.79 | 45.30 | 28.02 | b | 1.13 | -12.19 | 19.94 | ||||||||||||
1926 | -3.05 | -12.25 | 12.40 | 28.60 | 44.47 | 61.07 | 60.76 | 56.77 | 45.25 | 25.58 | 0.73 | -25.98 | 24.53 | |||||||||||||
1927 | -20.44 | -10.48 | -1.77 | 12.13 | 43.63 | 62.23 | 65.40 | 54.74 | 37.35 | 17.50 | -19.15 | -22.10 | 18.25 | |||||||||||||
1928 | -13.58 | -7.41 | -6.89 | 22.42 | 43.68 | 58.78 | 62.63 | 54.31 | 39.02 | 14.98 | 3.22 | -10.42 | 21.73 | |||||||||||||
1929 | -12.56 | -2.91 | -5.74 | 22.93 | 45.61 | 58.75 | 59.10 | 53.52 | 45.55 | 24.23 | 2.83 | -16.11 | 22.93 | |||||||||||||
1930 | -15.97 | -28.77 | -1.97 | 16.38 | 48.97 | 61.07 | 62.79 | 54.97 | 41.92 | 20.26 | -9.15 | -9.02 | 20.12 | |||||||||||||
1931 | -11.19 | b | -1.81 | a | -2.63 | a | 18.72 | 37.26 | 56.70 | 58.85 | 53.27 | 41.97 | 19.39 | 1.23 | b | -15.86 | b | 21.32 | ||||||||
1932 | -28.05 | -29.79 | 3.85 | 24.75 | 47.15 | a | 56.53 | 61.65 | 53.31 | 41.10 | 21.81 | -15.07 | -23.39 | 17.82 | ||||||||||||
1933 | -36.47 | -17.54 | 1.66 | 24.53 | 45.08 | 53.98 | 59.53 | 56.34 | 39.78 | 16.47 | -4.58 | -34.28 | a | 17.04 | ||||||||||||
1934 | -33.25 | s | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1935 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9.83 | s | -9.05 | b | -29.63 | -19.34 | j | |
1936 | -16.95 | -30.22 | 1.42 | 21.35 | 43.03 | 59.05 | a | 60.71 | 58.82 | 39.03 | a | 20.52 | -4.33 | -29.88 | b | 18.55 | ||||||||||
1937 | 1.90 | a | -19.57 | a | 0.62 | a | 17.08 | e | 40.41 | o | 63.00 | 61.47 | 53.13 | 46.97 | 24.23 | 3.33 | a | -16.40 | a | 21.43 | a | |||||
1938 | -28.66 | -22.90 | c | 3.35 | 23.42 | 45.18 | 58.35 | 62.10 | 55.97 | 47.95 | 31.18 | 1.43 | -8.42 | 22.41 | ||||||||||||
1939 | -16.68 | -16.88 | -1.65 | 27.87 | 43.84 | 60.80 | 63.89 | 54.45 | 39.97 | 18.52 | -10.67 | -2.03 | a | 21.79 | ||||||||||||
1940 | -7.06 | -9.43 | 3.79 | 35.05 | 46.65 | 59.08 | 63.81 | 57.77 | 44.60 | 24.37 | -2.84 | a | -12.27 | a | 25.29 | |||||||||||
1941 | -19.98 | a | -4.77 | 2.79 | 23.50 | 45.11 | 61.08 | 60.58 | 57.56 | 41.15 | 16.65 | -4.82 | -21.45 | 21.45 | ||||||||||||
1942 | -5.58 | -1.89 | 0.90 | 24.83 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 4.57 | h | ||||
1943 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 59.61 | m | 54.92 | 41.55 | 24.79 | 6.02 | -11.55 | k | 31.82 | h | ||||
1944 | -14.35 | -7.48 | 2.73 | 23.07 | 45.90 | 60.95 | 63.27 | 53.74 | 40.17 | 26.68 | -2.05 | -11.74 | 23.41 | |||||||||||||
1945 | -11.11 | -4.64 | 0.16 | 18.82 | 39.63 | 56.58 | 61.13 | 54.27 | 39.97 | 23.73 | -14.83 | -15.13 | 20.71 | |||||||||||||
1946 | -15.61 | -8.52 | -2.24 | 21.67 | 46.02 | 62.87 | 63.00 | 54.42 | 37.41 | b | 24.43 | a | -15.78 | j | -38.87 | h | 28.34 | b | ||||||||
1947 | -34.61 | d | -9.65 | d | 11.24 | 19.90 | 45.55 | 55.53 | 63.29 | 50.92 | 39.95 | b | 20.33 | b | -0.48 | b | -7.91 | b | 21.17 | |||||||
1948 | -15.32 | -16.78 | -4.61 | 19.55 | 41.81 | 58.45 | 58.90 | 50.15 | 36.28 | 17.15 | -12.25 | -30.77 | 16.88 | |||||||||||||
1949 | -20.82 | -20.91 | 10.61 | 16.40 | 38.21 | 52.80 | 61.24 | 56.47 | a | 46.07 | 23.87 | 5.83 | -22.69 | 20.59 | ||||||||||||
1950 | -12.31 | -32.96 | 10.06 | 22.05 | 46.52 | 59.98 | 63.24 | 56.29 | 42.08 | 19.61 | -10.28 | -7.94 | 21.36 | |||||||||||||
1951 | -33.65 | -24.41 | -8.56 | 22.53 | 45.90 | 53.93 | 60.79 | 57.76 | 41.83 | 15.71 | 8.10 | f | ----- | z | 23.18 | b | ||||||||||
1952 | -32.19 | -13.81 | 1.58 | 21.85 | 37.65 | 59.33 | 61.95 | 52.92 | 36.47 | 22.45 | 8.67 | -12.73 | 20.34 | |||||||||||||
1953 | -36.81 | -8.14 | -1.10 | 29.23 | 44.98 | 60.83 | 62.05 | 53.92 | 40.82 | 17.87 | -8.00 | -16.89 | 19.90 | |||||||||||||
1954 | -25.53 | -23.07 | 5.53 | 15.75 | 44.69 | 58.18 | 60.87 | 57.81 | 40.15 | 21.87 | 5.16 | a | -31.76 | 19.14 | ||||||||||||
1955 | -18.00 | -24.79 | -1.02 | 14.52 | 41.68 | 57.05 | 64.63 | 52.26 | 41.10 | 21.58 | -18.95 | -20.23 | 17.49 | |||||||||||||
1956 | -28.84 | -19.43 | 1.24 | 23.80 | 43.87 | 56.83 | 62.23 | 53.24 | 39.02 | 11.34 | -10.22 | -36.74 | 16.36 | |||||||||||||
1957 | -10.65 | -13.55 | 6.76 | 25.70 | 42.00 | 59.82 | 61.68 | 61.29 | 43.70 | 23.87 | 1.78 | -22.84 | 23.30 | |||||||||||||
1958 | -15.48 | -14.12 | 4.90 | 23.30 | 45.26 | 63.35 | 62.98 | 59.03 | 41.57 | 8.98 | -6.75 | -14.77 | 21.52 | |||||||||||||
1959 | -35.61 | -4.54 | -11.69 | 18.77 | 39.34 | 59.62 | 55.50 | 53.50 | 38.50 | 18.08 | -4.10 | -15.11 | 17.69 | |||||||||||||
1960 | -16.89 | -6.31 | -3.77 | 15.47 | 46.39 | 57.32 | 61.89 | 54.34 | 39.07 | 19.85 | -16.80 | -5.79 | 20.40 | |||||||||||||
1961 | -5.58 | -16.69 | a | -7.87 | 12.93 | 45.98 | 59.60 | 60.97 | 53.48 | 43.58 | 15.88 | f | -13.67 | -34.31 | 18.04 | a | ||||||||||
1962 | -11.27 | -3.62 | -1.27 | 21.37 | 39.47 | 58.15 | 62.61 | 58.31 | 40.18 | ----- | z | -2.88 | -10.74 | 22.75 | a | |||||||||||
1963 | -15.71 | -8.48 | -2.13 | 22.67 | 46.63 | 55.85 | 59.85 | 55.60 | 41.69 | f | 20.87 | -12.28 | ----- | z | 22.29 | b | ||||||||||
1964 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1965 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | -35.27 | a | -35.27 | k |
1966 | -36.12 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | -36.12 | k |
1967 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 59.94 | d | 61.76 | l | 53.45 | j | 41.24 | c | 18.79 | e | 1.66 | e | ----- | z | 30.41 | h |
1968 | -20.90 | f | -17.53 | k | 8.27 | i | 21.89 | l | 42.88 | s | 60.84 | k | 63.38 | k | 60.50 | s | 37.96 | r | 16.53 | p | -1.82 | k | -18.83 | h | ----- | z |
1969 | -23.85 | u | -14.85 | d | 6.10 | 29.38 | a | 47.34 | 64.60 | 63.27 | a | ----- | z | 36.25 | v | ----- | z | -9.21 | d | ----- | z | 26.66 | e | |||
1970 | ----- | z | ----- | z | ----- | z | 26.42 | r | 44.58 | y | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1971 | ----- | z | ----- | z | -0.78 | k | 16.36 | a | 43.92 | 59.95 | b | 63.22 | h | 53.02 | e | 39.86 | b | 17.38 | b | -7.14 | a | -14.17 | p | 31.91 | e | |
1972 | -21.05 | k | -15.50 | n | 12.43 | x | 18.63 | k | 46.44 | m | 59.12 | q | 64.96 | s | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1973 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1974 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1975 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1976 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1978 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1981 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1982 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1983 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1984 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 40.83 | r | 20.45 | c | -13.83 | -21.33 | d | -4.91 | i | |
1985 | 1.26 | b | -18.82 | 8.26 | 14.58 | 44.29 | c | 60.32 | b | 62.78 | a | 56.47 | 42.60 | a | 16.37 | a | -10.17 | c | -2.03 | 22.99 | ||||||
1986 | -11.53 | a | -7.38 | -2.31 | 14.55 | 42.72 | a | 63.00 | 63.94 | 52.90 | a | 43.27 | 18.74 | -15.28 | a | -4.75 | a | 21.49 | ||||||||
1987 | -9.42 | a | -15.04 | 0.97 | 23.45 | 46.58 | 60.85 | d | 62.43 | a | 56.15 | 40.77 | b | 25.28 | a | 1.63 | c | -13.50 | b | 23.35 | ||||||
1988 | -16.90 | g | -6.21 | c | 9.47 | a | 25.04 | c | 47.36 | c | 64.38 | a | 64.84 | c | 58.71 | b | 42.08 | 13.63 | e | -9.67 | c | -4.41 | c | 27.75 | a | |
1989 | -34.64 | c | -3.33 | a | -1.18 | 30.91 | b | 47.12 | a | 61.02 | a | 66.24 | b | 61.21 | 45.34 | e | 19.64 | b | -14.46 | g | -3.74 | f | 29.23 | b | ||
1990 | -25.98 | a | -33.86 | 10.46 | e | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | -16.46 | i | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | -20.45 | -14.63 | 0.93 | 21.22 | 43.66 | 58.99 | 61.82 | 55.30 | 41.53 | 20.07 | -5.85 | -18.40 | 20.57 | |||||||||||||
S.D. | 10.84 | 8.88 | 5.70 | 5.21 | 3.21 | 2.78 | 2.41 | 2.46 | 2.74 | 4.49 | 7.14 | 9.27 | 2.27 | |||||||||||||
SKEW | -0.03 | -0.36 | 0.27 | 0.11 | -0.90 | -0.28 | -0.69 | 0.40 | 0.27 | 0.05 | 0.05 | -0.17 | -0.02 | |||||||||||||
MAX | 1.90 | 1.83 | 13.07 | 35.05 | 48.97 | 64.60 | 67.25 | 61.29 | 47.95 | 31.18 | 8.67 | -2.03 | 25.29 | |||||||||||||
MIN | -37.90 | -33.86 | -11.69 | 8.35 | 33.68 | 52.80 | 55.34 | 50.15 | 36.28 | 8.98 | -19.15 | -36.74 | 16.36 | |||||||||||||
YRS | 53 | 55 | 54 | 54 | 52 | 53 | 51 | 49 | 48 | 54 | 53 | 48 | 34 |