YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
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 | 54.88 | s | 49.60 | 46.67 | a | 48.13 | j | |
1941 | 47.69 | j | 49.64 | c | 51.48 | 53.40 | a | 60.42 | 64.97 | 75.95 | c | 70.44 | 64.98 | b | 59.10 | 51.42 | 44.21 | 58.73 | a | |||||||
1942 | 42.37 | 45.36 | 47.00 | 53.76 | e | 61.61 | l | 65.90 | 75.97 | 73.10 | 67.10 | 59.94 | 48.57 | 46.45 | 56.86 | a | ||||||||||
1943 | ----- | z | ----- | z | 51.81 | ----- | z | ----- | z | ----- | z | ----- | z | 69.69 | 70.67 | 57.04 | h | 50.92 | 44.31 | 57.48 | g | |||||
1944 | 41.10 | 45.41 | 51.00 | 50.95 | 60.00 | 64.55 | a | 72.90 | 70.18 | ----- | z | 60.29 | x | 47.78 | 45.29 | 54.92 | b | |||||||||
1945 | 44.06 | 48.07 | 45.44 | 55.07 | 58.55 | 67.27 | 78.31 | 75.15 | 73.05 | j | 61.37 | 49.28 | 44.48 | 57.00 | a | |||||||||||
1946 | 42.35 | 42.89 | 48.76 | 54.33 | 60.40 | a | 62.97 | a | 70.64 | i | ----- | z | 70.88 | 55.78 | a | 47.55 | 45.27 | 53.12 | b | |||||||
1947 | 42.19 | 49.20 | 52.71 | 58.80 | 65.45 | 65.27 | 67.98 | 70.21 | 68.42 | 58.45 | 48.35 | 43.06 | 57.51 | |||||||||||||
1948 | 44.69 | 43.43 | 46.23 | 49.95 | 55.71 | 67.37 | 71.03 | 70.34 | 67.90 | 59.73 | 48.25 | 39.44 | 55.34 | |||||||||||||
1949 | 35.60 | 42.02 | 47.60 | a | 57.13 | 59.98 | b | 68.82 | 70.90 | 70.18 | 69.28 | 56.61 | ----- | z | 41.84 | 56.36 | a | |||||||||
1950 | 36.23 | 42.91 | 46.00 | a | 52.38 | a | 60.23 | 65.67 | 75.71 | 72.85 | 66.40 | 58.38 | a | 52.73 | 45.98 | 56.29 | ||||||||||
1951 | 40.69 | b | 43.29 | 46.29 | 54.97 | 60.29 | 68.43 | a | 71.52 | 72.08 | 69.05 | 57.98 | 47.95 | 38.77 | e | 55.94 | ||||||||||
1952 | 38.47 | a | 42.10 | 43.73 | a | 55.43 | 61.32 | 62.40 | 75.98 | 72.31 | 69.75 | 62.48 | a | 44.63 | 41.48 | 55.84 | ||||||||||
1953 | 44.67 | b | 44.80 | 45.82 | 51.57 | a | 53.48 | 59.18 | 69.31 | 65.58 | 68.22 | a | 56.03 | 48.47 | ----- | z | 55.19 | a | ||||||||
1954 | 41.44 | n | 48.84 | 46.50 | a | 57.23 | 61.87 | a | 64.05 | 69.98 | 65.95 | a | 64.90 | 57.15 | a | 47.45 | i | 42.37 | a | 57.88 | b | |||||
1955 | 40.19 | 43.88 | 48.40 | 48.42 | 59.65 | 66.40 | a | 68.63 | 72.37 | a | 67.81 | a | 59.38 | a | 48.75 | b | 46.33 | b | 55.85 | |||||||
1956 | 44.76 | 43.81 | b | 51.22 | a | 54.02 | 59.60 | a | 65.29 | a | 72.22 | a | 69.78 | a | 64.62 | 57.12 | a | ----- | z | 42.76 | 56.84 | a | ||||
1957 | 39.38 | a | 47.46 | a | 49.56 | 54.40 | 58.71 | 69.00 | ----- | z | 68.52 | 66.58 | 54.83 | a | 47.98 | 43.88 | a | 54.57 | a | |||||||
1958 | 43.02 | 49.07 | a | 45.23 | 53.00 | 62.32 | 65.83 | 73.58 | 75.24 | 66.03 | a | 61.40 | 50.32 | 46.72 | a | 57.65 | ||||||||||
1959 | ----- | z | 44.43 | 51.90 | 58.68 | 58.44 | 68.17 | 74.62 | a | 71.60 | 65.21 | b | 61.92 | 51.52 | a | 43.47 | 59.09 | a | ||||||||
1960 | 42.60 | 45.95 | 52.76 | 53.21 | a | 58.23 | a | 72.30 | 76.20 | a | 72.52 | c | 70.02 | a | 59.53 | a | 48.52 | 45.77 | 58.13 | |||||||
1961 | 46.47 | 48.81 | a | 48.27 | 55.37 | 55.98 | 70.59 | a | 73.42 | 74.21 | 65.25 | 58.53 | 48.60 | 43.39 | 57.41 | |||||||||||
1962 | 44.56 | 45.27 | 46.79 | 57.12 | 56.97 | 67.27 | 73.50 | a | 71.47 | 67.90 | a | 59.05 | 50.93 | 45.81 | 57.22 | |||||||||||
1963 | 41.53 | 52.46 | 47.21 | 48.78 | 61.58 | 68.03 | 71.42 | 72.45 | 69.12 | 59.13 | 48.02 | 43.47 | 56.93 | |||||||||||||
1964 | 41.39 | 46.48 | 47.76 | 53.80 | 58.79 | 66.75 | 74.98 | 74.77 | 66.75 | 61.47 | 46.38 | 45.52 | 57.07 | |||||||||||||
1965 | 44.61 | 46.34 | 50.40 | 54.15 | 60.19 | 67.20 | 74.58 | 72.98 | 64.60 | 61.27 | 49.33 | 39.50 | 57.10 | |||||||||||||
1966 | 42.29 | 43.02 | 49.50 | 57.78 | 63.87 | 68.12 | 71.48 | 75.60 | 68.15 | 59.15 | 50.23 | 43.63 | 57.73 | |||||||||||||
1967 | 42.65 | 46.75 | 45.60 | 43.65 | 60.90 | 68.42 | 76.90 | 77.53 | 70.97 | 59.13 | 51.48 | 40.40 | 57.03 | |||||||||||||
1968 | 40.65 | 49.14 | 50.79 | 55.58 | 60.10 | 70.87 | 76.84 | 70.92 | 69.13 | 57.97 | 48.63 | 40.26 | 57.57 | |||||||||||||
1969 | 40.81 | 41.73 | 48.90 | 52.90 | 64.45 | 68.03 | 76.61 | 75.10 | 71.07 | 56.27 | 49.25 | 46.81 | 57.66 | |||||||||||||
1970 | 46.21 | 48.57 | 51.03 | 50.33 | 63.39 | 70.43 | 76.73 | 73.87 | 67.90 | 58.40 | 50.70 | 41.95 | 58.29 | |||||||||||||
1971 | 44.08 | 47.25 | 47.77 | 51.53 | 58.19 | 66.75 | 76.34 | 75.37 | 66.93 | 55.71 | 47.07 | 39.16 | 56.35 | |||||||||||||
1972 | 41.15 | 46.62 | 53.37 | 52.33 | 61.69 | 69.78 | 74.98 | 74.79 | 65.28 | 56.61 | 47.18 | 38.40 | 56.85 | |||||||||||||
1973 | 40.21 | 46.48 | 46.29 | 55.85 | 64.85 | 69.82 | 74.81 | 71.42 | 66.55 | 57.18 | 47.30 | 44.23 | 57.08 | |||||||||||||
1974 | 41.29 | 43.20 | 48.77 | 52.88 | 60.65 | 69.25 | 71.95 | 72.44 | 69.58 | 57.92 | 46.13 | 41.82 | 56.32 | |||||||||||||
1975 | 40.52 | 42.75 | 47.90 | 48.13 | 62.00 | 69.13 | 73.02 | a | 72.34 | 71.37 | 56.69 | 46.60 | 44.77 | 56.27 | ||||||||||||
1976 | 43.18 | 46.47 | 47.79 | 51.47 | 63.19 | 67.55 | 74.90 | 69.19 | 68.52 | 60.85 | 52.98 | 43.50 | 57.47 | |||||||||||||
1977 | 42.25 | a | 49.29 | 46.69 | 57.08 | 54.74 | 73.42 | 75.29 | b | 76.23 | 67.37 | 59.81 | 49.58 | 46.52 | 58.19 | |||||||||||
1978 | 46.53 | 48.00 | 53.66 | 51.45 | 60.74 | 67.38 | 75.55 | 74.90 | 65.10 | 62.50 | 47.07 | 40.15 | 57.75 | |||||||||||||
1979 | 42.09 | b | 44.55 | 50.77 | 53.47 | a | 62.55 | 69.05 | 74.60 | 71.89 | 70.80 | 60.39 | 48.32 | 44.60 | 57.76 | |||||||||||
1980 | 45.32 | 49.09 | a | 49.05 | 55.08 | 59.50 | 63.52 | 74.65 | 73.60 | 67.95 | 61.02 | 50.12 | 44.82 | 57.81 | ||||||||||||
1981 | 45.87 | 48.52 | 49.68 | 55.90 | 62.16 | 72.18 | 75.58 | 75.06 | 69.92 | 56.18 | 51.28 | 47.29 | 59.14 | |||||||||||||
1982 | 40.90 | e | 47.00 | a | 46.90 | 51.13 | 63.63 | d | 68.07 | b | 72.68 | c | 69.52 | e | 61.00 | x | ----- | z | 45.94 | e | 43.13 | h | 56.20 | c | ||
1983 | ----- | z | ----- | z | ----- | z | 50.05 | 60.97 | 66.03 | 68.65 | 71.58 | 69.41 | b | 61.70 | a | 48.83 | 46.22 | b | 60.38 | c | ||||||
1984 | 46.90 | a | 46.95 | a | 53.10 | 52.23 | ----- | z | 68.93 | o | 77.29 | ----- | z | 70.08 | 55.02 | a | 48.21 | b | 41.87 | 54.63 | c | |||||
1985 | 43.53 | ----- | z | 46.90 | b | 58.70 | ----- | z | 72.24 | a | 77.02 | ----- | z | 64.84 | e | ----- | z | 43.71 | d | 44.05 | a | 56.37 | d | |||
1986 | ----- | z | 49.95 | 54.48 | 54.84 | a | ----- | z | 69.68 | 74.52 | 76.53 | 63.10 | a | 60.61 | 52.12 | 44.15 | a | 60.00 | b | |||||||
1987 | 42.02 | g | 46.80 | 48.37 | 59.05 | b | 64.55 | 70.79 | a | 69.48 | a | 74.79 | 69.50 | ----- | z | 50.19 | a | ----- | z | 61.50 | c | |||||
1988 | ----- | z | 50.28 | 52.40 | 55.52 | ----- | z | 66.12 | ----- | z | 74.95 | a | ----- | z | ----- | z | 49.76 | e | 44.95 | k | 58.17 | f | ||||
1989 | 42.07 | j | 42.35 | h | 50.09 | h | 58.35 | j | 59.45 | i | 68.36 | i | 72.22 | k | 70.50 | h | 67.14 | i | ----- | z | 50.53 | n | 43.80 | k | ----- | z |
1990 | 43.86 | i | 43.18 | k | 51.30 | i | 58.88 | i | 58.70 | i | 65.57 | i | 75.38 | j | 74.50 | h | 68.00 | k | 62.50 | i | 47.33 | j | 38.65 | k | ----- | z |
1991 | 44.25 | i | 50.76 | k | 44.19 | j | 51.98 | h | 56.86 | i | 64.90 | j | 75.75 | i | 70.45 | l | 73.63 | k | 65.34 | i | 52.47 | m | 44.50 | j | ----- | z |
1992 | 42.93 | i | 50.47 | j | 52.32 | i | 57.71 | i | 66.12 | k | 70.32 | h | 72.61 | i | 76.57 | j | 69.12 | i | 62.18 | i | 49.77 | j | 42.32 | i | ----- | z |
1993 | 41.32 | l | 43.53 | j | 53.20 | h | 53.20 | h | 58.42 | m | 65.98 | h | 71.27 | i | 71.64 | i | 68.33 | j | 61.79 | j | 50.19 | l | 42.47 | o | ----- | z |
1994 | 43.64 | m | 44.25 | j | 52.43 | i | 55.17 | i | 61.12 | j | 66.00 | i | 77.47 | l | 73.03 | l | 69.43 | i | 58.00 | l | 43.42 | l | 40.06 | o | ----- | z |
1995 | 46.05 | j | 50.81 | j | 48.14 | i | 52.84 | n | 58.27 | k | 65.50 | i | 71.22 | k | 72.65 | h | 70.33 | j | 61.15 | n | 54.52 | j | 47.67 | m | ----- | z |
1996 | 44.30 | k | 47.68 | j | 51.02 | j | 53.61 | h | 60.93 | i | 67.90 | j | 76.70 | i | 76.12 | j | ----- | z | 57.44 | v | 50.65 | m | 46.25 | m | ----- | z |
1997 | 44.86 | i | 46.58 | h | ----- | z | 54.64 | h | 65.45 | j | 67.36 | p | 73.97 | l | 73.47 | l | 68.53 | j | 58.50 | l | 51.38 | i | 43.86 | i | ----- | z |
1998 | 45.32 | l | 43.92 | c | 50.85 | h | 53.65 | m | 52.61 | m | 66.19 | l | 74.66 | i | 76.40 | k | 71.42 | j | 57.95 | j | 48.57 | o | 42.35 | k | 43.92 | k |
1999 | 44.19 | m | 43.56 | k | 46.09 | h | 52.26 | k | 60.36 | m | 65.95 | j | 71.21 | l | 71.36 | j | 71.81 | i | 62.17 | k | 53.00 | l | 44.67 | k | ----- | z |
2000 | 44.50 | m | 47.21 | j | 50.76 | h | 56.97 | k | 60.48 | i | 71.88 | j | 71.53 | m | 73.89 | i | 69.25 | j | 58.38 | k | 47.28 | l | 45.44 | m | ----- | z |
2001 | 41.67 | j | 44.21 | i | 54.34 | i | 52.26 | i | 68.68 | i | 68.86 | i | 70.89 | q | 71.04 | c | 67.13 | c | 61.63 | d | 50.61 | c | 44.14 | b | 58.91 | g |
2002 | 44.48 | f | 48.52 | d | 48.04 | d | 57.46 | p | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 48.28 | j |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 42.43 | 46.31 | 48.91 | 53.68 | 60.48 | 67.62 | 73.83 | 72.45 | 67.82 | 58.87 | 48.92 | 43.59 | 57.16 | |||||||||||||
S.D. | 2.59 | 2.62 | 2.62 | 3.17 | 2.69 | 2.82 | 2.67 | 2.63 | 2.14 | 2.15 | 2.00 | 2.41 | 0.86 | |||||||||||||
SKEW | -0.44 | 0.02 | 0.32 | -0.57 | -0.44 | -0.41 | -0.57 | -0.44 | -0.20 | -0.08 | -0.20 | -0.53 | -0.13 | |||||||||||||
MAX | 46.90 | 52.46 | 54.48 | 59.05 | 65.45 | 73.42 | 78.31 | 77.53 | 71.37 | 62.50 | 52.98 | 47.29 | 59.14 | |||||||||||||
MIN | 35.60 | 41.73 | 43.73 | 43.65 | 53.48 | 59.18 | 67.98 | 65.58 | 63.10 | 54.83 | 43.71 | 38.40 | 55.34 | |||||||||||||
YRS | 40 | 47 | 48 | 47 | 42 | 46 | 44 | 46 | 45 | 43 | 47 | 46 | 29 |