YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1937 | ----- | z | ----- | z | 35.14 | q | 46.31 | c | 59.80 | i | 65.17 | a | 69.95 | b | 70.15 | 63.42 | 52.72 | a | 39.77 | 34.65 | 55.27 | d | ||||
1938 | 33.13 | 33.62 | 39.47 | 46.80 | 52.45 | 64.55 | 68.05 | 67.61 | 60.53 | a | 50.13 | ----- | z | 32.44 | 49.89 | a | ||||||||||
1939 | 29.13 | 22.62 | 38.32 | 49.75 | 55.39 | 63.70 | 70.40 | 69.44 | 62.00 | 48.07 | b | 39.95 | 34.71 | 48.62 | ||||||||||||
1940 | 30.62 | a | 31.90 | c | 40.85 | 47.47 | a | 56.95 | 66.37 | 70.31 | 67.48 | 59.78 | 50.34 | 37.03 | 34.45 | 49.46 | ||||||||||
1941 | 30.03 | 36.18 | 38.37 | a | 40.91 | a | 54.19 | 58.95 | 66.84 | 66.00 | 57.73 | 47.47 | 39.17 | 31.89 | 47.31 | |||||||||||
1942 | 27.63 | 29.05 | 34.35 | a | 45.78 | 52.05 | a | 61.85 | 71.37 | 67.08 | 60.88 | d | 49.19 | b | 42.22 | 34.40 | 47.99 | |||||||||
1943 | 31.98 | 36.84 | 39.76 | 48.68 | 55.27 | 64.24 | a | 70.21 | 67.66 | 60.10 | a | 48.60 | 38.43 | 26.27 | c | 49.00 | ||||||||||
1944 | 23.45 | 30.71 | 33.85 | 40.10 | a | 51.42 | 59.73 | 66.52 | 66.71 | 58.78 | 48.63 | 33.08 | 26.45 | a | 44.95 | |||||||||||
1945 | 27.34 | 35.69 | a | 35.23 | a | 45.19 | f | 54.23 | 60.27 | 68.84 | 68.98 | 58.87 | c | 49.87 | a | 33.91 | a | 21.81 | e | 46.82 | a | |||||
1946 | 26.92 | a | 30.95 | 40.81 | 50.77 | 53.79 | 66.27 | 70.84 | 67.13 | 61.90 | 47.95 | 36.43 | b | 35.52 | 49.10 | |||||||||||
1947 | 25.31 | 37.70 | 40.32 | 46.40 | 56.70 | a | 62.10 | 71.08 | 68.27 | 63.57 | 51.97 | 32.72 | 29.32 | 48.79 | ||||||||||||
1948 | 35.34 | o | 31.34 | j | 31.60 | b | 47.32 | 53.82 | a | 62.58 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 48.83 | h | ||
1949 | ----- | z | ----- | z | ----- | z | ----- | z | 53.42 | 62.68 | 68.61 | 66.60 | 61.64 | a | 47.44 | 43.17 | 26.37 | 53.74 | d | |||||||
1950 | 29.48 | 37.23 | 39.28 | a | 48.02 | 51.76 | 63.50 | 68.26 | 66.37 | 57.33 | 55.50 | 41.43 | 35.95 | a | 49.51 | |||||||||||
1951 | 28.37 | 33.04 | 38.19 | 46.02 | 54.61 | 61.32 | 72.53 | 67.63 | 60.65 | 48.85 | 36.18 | 27.50 | 47.91 | |||||||||||||
1952 | 30.23 | 29.76 | 32.16 | 45.65 | 53.05 | 63.52 | 69.06 | 68.34 | 60.87 | 52.21 | 30.77 | 24.39 | 46.67 | |||||||||||||
1953 | 34.02 | 30.46 | 38.50 | 44.95 | 48.34 | b | 64.60 | 71.23 | 67.21 | 62.07 | a | 50.03 | a | 39.47 | 28.19 | 48.26 | ||||||||||
1954 | 31.44 | 39.52 | 37.39 | 50.80 | 57.00 | 63.82 | 70.95 | 66.65 | 62.17 | 52.32 | 41.17 | 29.18 | 50.20 | |||||||||||||
1955 | 24.39 | 25.32 | 38.52 | a | 44.38 | 53.10 | 60.88 | 67.40 | 68.05 | 61.68 | 52.35 | a | 39.45 | a | 35.48 | 47.58 | ||||||||||
1956 | 35.95 | 28.00 | a | 39.38 | a | 45.14 | a | 57.12 | a | 67.10 | 68.68 | 65.58 | a | 63.72 | 50.74 | d | 32.05 | a | 28.62 | a | 48.51 | |||||
1957 | 29.92 | 38.61 | a | 39.23 | 43.05 | 49.90 | 67.97 | a | 68.05 | 66.53 | 59.28 | a | 48.42 | 32.83 | 31.98 | 47.98 | ||||||||||
1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1959 | 28.65 | 30.66 | 37.42 | 47.18 | 53.77 | a | 66.98 | 71.11 | 66.39 | 60.47 | 49.29 | 37.47 | 31.39 | 48.40 | ||||||||||||
1960 | 22.47 | 26.59 | 40.71 | 46.65 | 53.57 | c | 65.87 | 72.08 | 68.84 | 62.53 | 48.05 | 38.92 | 27.92 | 47.85 | ||||||||||||
1961 | 27.60 | 32.98 | 37.58 | 45.85 | 54.16 | 66.20 | 70.60 | 67.89 | 57.92 | 48.68 | 35.69 | a | 24.32 | 47.46 | ||||||||||||
1962 | 23.97 | 33.70 | 33.95 | a | 49.33 | 52.48 | 62.02 | 68.76 | 68.61 | 62.45 | 50.85 | 42.43 | 32.52 | a | 48.42 | |||||||||||
1963 | 22.48 | 35.64 | 37.05 | 44.33 | 57.32 | 62.05 | a | 71.65 | 67.02 | 64.37 | 54.53 | 39.96 | b | 29.23 | 48.80 | |||||||||||
1964 | 23.94 | 24.45 | 31.29 | 39.82 | 45.96 | s | 60.60 | 71.02 | 65.87 | 59.30 | 51.44 | 34.02 | 28.42 | 44.56 | a | |||||||||||
1965 | 29.33 | a | 29.52 | 34.13 | a | 43.22 | 50.11 | 58.17 | 66.81 | 66.94 | 57.82 | 51.35 | 41.00 | 31.02 | 46.62 | |||||||||||
1966 | 26.24 | 26.12 | 38.44 | 47.12 | 57.63 | 64.22 | 72.02 | 69.06 | 60.90 | 50.27 | 41.53 | 28.70 | a | 48.52 | ||||||||||||
1967 | 25.40 | 34.91 | 42.65 | 44.48 | a | 53.00 | 60.97 | 70.61 | 66.50 | 57.92 | 50.34 | 41.17 | 23.79 | 47.64 | ||||||||||||
1968 | 24.92 | a | 36.59 | 38.90 | 42.58 | 52.92 | 64.03 | 69.62 | a | 63.24 | 57.65 | 49.56 | 36.24 | a | 24.33 | a | 46.72 | |||||||||
1969 | 31.81 | 30.32 | 32.55 | 46.95 | 55.31 | 61.97 | 69.68 | 69.29 | 61.25 | 45.11 | 35.92 | 32.45 | 47.72 | |||||||||||||
1970 | 28.13 | 36.23 | 34.10 | a | 39.55 | 54.40 | 62.40 | ----- | z | 68.95 | a | 57.27 | 44.06 | 39.20 | 29.11 | 44.86 | a | |||||||||
1971 | 28.50 | 31.16 | 36.85 | 43.75 | 51.35 | a | 64.27 | 71.23 | a | 67.60 | 58.55 | 45.58 | 36.50 | 25.50 | 46.74 | |||||||||||
1972 | 30.02 | 34.40 | 44.02 | 46.83 | 53.56 | 63.25 | 70.78 | k | 67.04 | f | 59.90 | 49.66 | 33.00 | 26.89 | 44.15 | b | ||||||||||
1973 | 24.35 | 31.19 | a | 33.58 | 40.97 | 52.50 | 62.22 | 68.02 | 66.44 | d | 58.07 | 48.58 | 37.18 | 30.19 | 46.11 | |||||||||||
1974 | 26.82 | a | 27.68 | 40.95 | 42.02 | 56.03 | 68.10 | a | 69.12 | a | ----- | z | 58.52 | a | 49.87 | 37.85 | 25.95 | 45.72 | a | |||||||
1975 | 25.47 | a | 26.77 | b | 34.90 | 39.10 | 49.05 | 60.27 | 68.60 | 64.38 | a | 56.96 | b | 46.45 | 34.66 | b | 26.95 | 44.46 | ||||||||
1976 | 24.94 | 34.03 | 34.81 | 43.62 | 53.37 | a | 62.86 | b | 69.11 | 67.31 | 58.83 | a | 46.16 | 38.83 | ----- | z | 48.53 | a | ||||||||
1977 | 23.32 | 32.80 | 33.09 | b | 47.82 | ----- | z | 65.95 | 69.47 | 68.17 | b | 61.57 | a | 50.68 | 40.12 | a | 33.85 | 47.89 | a | |||||||
1978 | 31.27 | a | 32.32 | 40.66 | 45.07 | b | 51.79 | b | 66.47 | 70.43 | a | 66.74 | b | 59.22 | c | 57.09 | t | 38.68 | 24.35 | 47.91 | a | |||||
1979 | 21.08 | 27.95 | 35.87 | 43.27 | 52.05 | b | 60.88 | a | 61.85 | e | 61.31 | o | 57.13 | d | 46.72 | m | 32.38 | 30.06 | 42.25 | b | ||||||
1980 | 30.15 | 33.62 | 33.74 | 42.79 | a | 50.06 | 66.25 | l | 72.69 | 67.97 | l | 62.95 | k | ----- | z | 39.04 | e | 35.64 | b | 42.22 | d | |||||
1981 | 34.19 | 32.67 | a | 35.78 | a | 46.64 | b | 53.06 | f | 69.17 | i | 71.00 | j | 66.09 | h | ----- | z | ----- | z | 41.29 | m | 35.68 | 36.99 | g | ||
1982 | 29.85 | 32.83 | d | 39.28 | d | 47.23 | 53.67 | a | 61.62 | 69.74 | b | 68.30 | a | 61.59 | b | 47.28 | a | 37.21 | a | 29.84 | 48.20 | |||||
1983 | 30.13 | a | 32.83 | e | 38.21 | g | 32.72 | u | 54.27 | r | 61.83 | g | 68.30 | i | 68.17 | k | 64.70 | j | 51.02 | j | 33.80 | j | 32.93 | i | 31.48 | j |
1984 | 28.38 | k | 32.64 | g | 39.70 | f | 44.72 | a | 61.50 | b | 64.22 | a | 70.64 | b | 67.71 | 62.50 | d | 44.89 | d | 39.50 | b | 31.73 | a | 54.16 | c | |
1985 | 29.52 | a | 30.33 | a | 39.67 | h | 51.22 | c | 55.98 | c | 67.22 | a | 70.15 | d | 69.48 | a | 56.35 | f | 50.57 | b | 39.72 | c | 34.47 | a | 49.87 | b |
1986 | 37.64 | b | 38.15 | b | 43.28 | a | 47.34 | e | 55.83 | e | 66.20 | 68.62 | a | 69.34 | b | 58.20 | c | 47.36 | b | 41.00 | d | 31.61 | c | 50.38 | ||
1987 | 27.93 | c | 31.77 | d | 36.77 | c | 49.52 | a | 53.61 | 67.07 | 68.90 | 67.50 | 60.83 | 54.08 | 38.19 | a | 28.14 | f | 50.56 | a | ||||||
1988 | 26.12 | b | 36.00 | a | 40.47 | b | 49.04 | c | 56.69 | b | 66.59 | a | 70.64 | c | 67.88 | b | 60.91 | a | 55.84 | c | 40.65 | c | 29.73 | a | 50.05 | |
1989 | 27.27 | c | 36.21 | b | 48.14 | c | 55.50 | a | 59.43 | a | 67.45 | a | 71.98 | a | 68.15 | a | 63.05 | a | 50.74 | b | 42.03 | 33.81 | b | 51.98 | ||
1990 | 30.52 | e | 31.08 | d | 43.40 | b | 51.31 | f | 56.60 | a | 70.38 | a | 70.12 | a | 67.08 | a | 63.24 | a | 51.95 | a | 38.76 | c | 24.52 | b | 49.79 | a |
1991 | 27.78 | b | 37.77 | b | 37.21 | b | 45.91 | c | 53.83 | e | 61.60 | a | 68.21 | b | 67.55 | c | 61.52 | a | 52.48 | c | 38.75 | 29.31 | 48.49 | |||
1992 | 26.85 | 35.25 | a | 40.89 | 51.60 | 55.92 | a | 62.98 | 67.17 | a | 66.15 | a | 61.05 | a | 52.52 | 34.07 | 25.27 | c | 48.31 | |||||||
1993 | 31.23 | g | 36.74 | g | 43.20 | d | 47.70 | 54.58 | 63.23 | d | 70.80 | a | 66.32 | a | 59.80 | b | 49.05 | j | 36.42 | 30.66 | 52.52 | c | ||||
1994 | 32.03 | 31.06 | b | 42.55 | 47.94 | d | 55.61 | 69.25 | 71.63 | 70.31 | 61.29 | b | 47.98 | a | 32.45 | i | 33.87 | a | 51.23 | a | ||||||
1995 | 30.43 | b | 41.17 | a | 41.97 | b | 46.02 | e | 52.27 | a | 61.98 | a | 68.31 | 69.76 | 58.94 | n | 49.63 | p | 42.76 | a | 31.09 | b | 48.57 | b | ||
1996 | 32.36 | c | 39.02 | a | 37.45 | j | 47.69 | d | 61.04 | d | 66.17 | 70.42 | a | 67.74 | 56.48 | a | 48.69 | e | 38.26 | c | 32.77 | e | 50.97 | a | ||
1997 | ----- | z | 31.70 | a | 43.40 | e | 43.46 | c | 56.32 | c | 63.48 | b | 67.10 | 67.14 | c | 62.86 | b | 46.33 | b | 38.46 | c | 25.26 | d | 49.59 | a | |
1998 | 31.02 | i | 29.60 | d | 37.50 | d | 41.32 | b | 54.45 | a | 62.57 | c | 69.75 | c | 68.14 | b | 63.20 | b | 48.48 | d | 39.25 | b | 31.12 | e | 49.58 | a |
1999 | 33.10 | e | 35.67 | d | 40.12 | k | 44.45 | j | 55.54 | q | 57.72 | u | 66.29 | l | 67.78 | v | 60.24 | k | ----- | z | ----- | z | ----- | z | 34.38 | j |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 28.47 | 32.63 | 38.12 | 45.85 | 54.22 | 63.84 | 69.60 | 67.54 | 60.40 | 49.67 | 37.97 | 29.87 | 48.13 | |||||||||||||
S.D. | 3.54 | 4.03 | 3.63 | 3.28 | 2.65 | 2.65 | 1.87 | 1.35 | 2.06 | 2.60 | 3.06 | 3.73 | 1.47 | |||||||||||||
SKEW | 0.17 | -0.21 | 0.16 | 0.12 | 0.37 | 0.22 | -1.27 | -0.40 | -0.09 | 0.18 | -0.49 | -0.12 | -0.11 | |||||||||||||
MAX | 37.64 | 41.17 | 48.14 | 55.50 | 61.50 | 70.38 | 72.69 | 70.31 | 64.37 | 55.84 | 43.17 | 35.95 | 51.98 | |||||||||||||
MIN | 21.08 | 22.63 | 31.29 | 39.10 | 48.34 | 58.17 | 61.85 | 63.24 | 56.48 | 44.06 | 30.77 | 21.81 | 44.46 | |||||||||||||
YRS | 55 | 57 | 55 | 57 | 56 | 58 | 56 | 54 | 55 | 53 | 56 | 57 | 35 |