YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1939 | 35.69 | j | 33.39 | 35.19 | 45.47 | 51.23 | 53.07 | a | 60.26 | 61.60 | 54.17 | 46.34 | 40.00 | 37.52 | 47.11 | a | ||||||||||
1940 | 34.95 | a | 37.63 | c | 42.88 | a | 45.92 | 53.98 | 57.38 | 60.00 | 60.37 | 58.00 | 48.95 | 34.17 | d | 35.03 | 47.44 | |||||||||
1941 | 33.84 | 38.79 | 45.23 | 47.68 | e | 50.88 | a | 55.88 | 64.65 | a | 61.42 | 52.29 | a | 47.25 | c | 41.40 | 34.40 | 47.81 | ||||||||
1942 | 32.40 | 35.62 | 39.41 | d | 45.10 | o | 48.60 | ----- | z | 61.05 | b | 62.60 | a | 56.31 | a | ----- | z | ----- | z | 33.28 | a | 46.16 | d | |||
1943 | 29.88 | e | 36.46 | a | 38.23 | i | 46.61 | h | 48.35 | h | 52.72 | 59.37 | 57.48 | ----- | z | ----- | z | 41.50 | v | 33.21 | b | 44.85 | f | |||
1944 | 29.11 | c | 33.66 | a | 36.18 | a | 44.47 | 49.76 | 53.48 | i | 61.18 | 58.30 | a | 55.60 | 47.96 | c | 35.35 | 31.10 | b | 43.88 | a | |||||
1945 | 31.17 | d | 34.63 | b | 36.57 | i | 39.08 | j | 49.93 | j | 50.30 | j | 59.63 | l | 58.31 | m | 49.61 | k | 46.38 | k | 34.92 | e | 30.68 | k | 33.57 | i |
1946 | 31.94 | g | 33.04 | a | 37.33 | a | 42.29 | k | 52.11 | l | 53.73 | h | 59.61 | i | 58.36 | m | 52.50 | k | 41.50 | i | 33.17 | i | 31.30 | k | 35.19 | j |
1947 | 26.95 | l | 34.92 | h | 41.62 | g | 44.90 | i | 53.21 | n | 54.47 | k | 58.81 | j | 57.91 | i | 53.50 | l | 46.17 | k | 37.48 | i | 33.26 | d | 33.26 | k |
1948 | 30.42 | f | 31.72 | k | 35.37 | l | 39.54 | g | 46.83 | j | 58.15 | 58.18 | 58.81 | 52.67 | 44.73 | 35.93 | b | 28.38 | e | 48.12 | e | |||||
1949 | 21.93 | h | 29.96 | d | 37.10 | 42.88 | 53.40 | 53.98 | 57.18 | 59.52 | 55.58 | 42.53 | 41.71 | b | 32.64 | b | 46.04 | a | ||||||||
1950 | 21.32 | l | 33.07 | e | 35.47 | 40.32 | 47.74 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 39.15 | h | |||
1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1952 | ----- | z | ----- | z | ----- | z | ----- | z | 51.40 | 52.72 | 60.92 | 59.81 | 56.62 | 49.97 | 33.03 | ----- | z | 52.07 | e | |||||||
1953 | 35.48 | 35.95 | 38.73 | 43.27 | 49.08 | 51.67 | 60.11 | 59.73 | 55.32 | 47.65 | 40.12 | 34.92 | 46.00 | |||||||||||||
1954 | 30.42 | 33.38 | 35.45 | 41.00 | 50.27 | 52.10 | 56.23 | 56.24 | 53.83 | a | 44.48 | 41.68 | 32.97 | 44.00 | ||||||||||||
1955 | 32.03 | 32.25 | 32.73 | 39.10 | 46.02 | 54.40 | 56.84 | 57.37 | 53.08 | 45.66 | 31.38 | 30.61 | 42.62 | |||||||||||||
1956 | 29.85 | 30.60 | c | 34.19 | 43.55 | a | 53.45 | 52.92 | 61.10 | 59.39 | 53.82 | 43.69 | 36.33 | 34.13 | 44.42 | |||||||||||
1957 | 26.10 | 32.91 | 38.10 | 45.28 | 53.50 | 56.25 | 57.52 | 57.10 | 58.80 | 45.56 | 36.37 | 35.60 | 45.26 | |||||||||||||
1958 | 34.29 | 41.68 | 39.21 | 44.32 | 56.63 | 60.20 | 65.34 | 62.61 | 54.53 | 48.15 | 37.53 | 37.81 | 48.52 | |||||||||||||
1959 | 32.32 | a | 35.07 | 38.98 | 45.07 | 48.81 | 55.75 | 61.52 | 57.56 | 52.85 | 47.79 | 37.88 | 33.66 | 45.61 | ||||||||||||
1960 | 30.98 | 35.29 | 39.19 | 44.88 | 47.74 | 55.70 | 62.40 | 57.89 | 54.72 | 47.89 | 36.80 | 32.87 | 45.53 | |||||||||||||
1961 | 36.94 | 37.79 | 40.66 | 43.40 | 49.87 | 59.47 | 62.18 | 62.94 | o | 51.77 | 45.32 | 35.20 | 33.05 | 45.06 | a | |||||||||||
1962 | 31.42 | 36.71 | 37.19 | 46.38 | 47.02 | 54.17 | 58.68 | 58.53 | 56.10 | 46.11 | 39.85 | 35.05 | 45.60 | |||||||||||||
1963 | 29.37 | 42.34 | 39.21 | 42.68 | 51.34 | 54.10 | a | 57.27 | 59.56 | 59.37 | 48.44 | 38.68 | 35.11 | 46.46 | ||||||||||||
1964 | 33.71 | 35.09 | 38.39 | 41.72 | 47.89 | 54.55 | 59.24 | 57.45 | 52.58 | 49.10 | 35.85 | 29.87 | 44.62 | |||||||||||||
1965 | 32.60 | 35.57 | 40.50 | 46.28 | 46.50 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 38.74 | h | ||||
1966 | ----- | z | ----- | z | ----- | z | ----- | z | 50.48 | 54.37 | 57.68 | 58.66 | b | 56.68 | 46.34 | 40.57 | a | 37.21 | 50.25 | d | ||||||
1967 | 34.98 | d | 37.77 | 36.69 | 41.00 | 50.10 | 58.70 | 59.77 | 63.53 | 57.93 | 48.13 | 41.13 | 32.79 | 46.88 | ||||||||||||
1968 | 33.34 | 42.34 | 42.19 | 42.20 | 50.55 | 55.15 | 61.26 | ----- | z | 54.98 | d | 46.44 | 39.70 | 29.74 | 45.26 | a | ||||||||||
1969 | 25.31 | 33.34 | 39.61 | 44.52 | 53.15 | 60.13 | ----- | z | 57.45 | 55.37 | 46.29 | 41.81 | a | 36.31 | g | 45.70 | b | |||||||||
1970 | 31.94 | 40.85 | b | 39.57 | c | 40.17 | 49.33 | d | 58.27 | 60.32 | 58.45 | 52.55 | 45.92 | 39.52 | a | 29.95 | b | 45.57 | ||||||||
1971 | 31.74 | 35.54 | 35.32 | 43.33 | 50.40 | 51.43 | 59.82 | c | 61.81 | 52.05 | 45.54 | c | 38.42 | 31.32 | c | 44.73 | ||||||||||
1972 | 29.33 | d | 37.31 | m | 39.85 | 41.30 | 52.34 | 55.25 | b | 58.45 | c | 60.11 | 49.98 | 45.70 | d | 39.43 | 27.54 | h | 47.18 | b | ||||||
1973 | 31.47 | 39.20 | 39.19 | d | 43.50 | 51.19 | 55.28 | 58.95 | 54.50 | c | 54.97 | 45.94 | 34.60 | f | 36.52 | 46.43 | a | |||||||||
1974 | 29.95 | 36.39 | 39.91 | d | 43.68 | b | 46.81 | 54.83 | l | 56.92 | f | 58.69 | d | 58.14 | b | 48.10 | 39.02 | 35.39 | 43.61 | b | ||||||
1975 | 32.46 | h | 34.02 | 36.42 | 40.80 | j | 49.35 | 53.32 | 60.57 | d | 56.84 | b | 56.22 | a | 45.52 | d | 36.80 | 35.73 | e | 46.48 | b | |||||
1976 | 35.69 | 35.16 | 36.18 | a | 43.62 | b | 50.15 | 51.72 | c | 57.83 | e | 57.39 | 56.22 | 48.08 | g | 41.79 | b | 35.48 | 45.57 | a | ||||||
1977 | 31.77 | 41.07 | 37.50 | a | 46.88 | 46.87 | 56.17 | d | 57.76 | 62.06 | 51.63 | d | 46.09 | h | 37.02 | 34.78 | f | 46.87 | b | |||||||
1978 | 36.50 | 38.83 | a | 41.76 | 43.12 | d | 49.22 | h | 57.83 | 59.93 | b | 59.16 | 53.25 | 48.61 | 35.37 | d | 30.93 | c | 45.94 | a | ||||||
1979 | 28.56 | 34.96 | e | 41.19 | 43.83 | d | 51.19 | 55.18 | 60.39 | 58.98 | 56.90 | 49.42 | g | 39.56 | d | 38.52 | 46.30 | a | ||||||||
1980 | 28.86 | c | 38.62 | c | 38.94 | 47.98 | 50.52 | 53.65 | 59.35 | 57.55 | 54.57 | 50.50 | g | 39.75 | 36.05 | 45.98 | a | |||||||||
1981 | 41.17 | d | 40.81 | j | 42.08 | 44.48 | 49.26 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 44.25 | h | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 32.04 | 36.08 | 38.55 | 43.74 | 50.29 | 55.20 | 59.80 | 59.07 | 54.84 | 46.67 | 38.06 | 33.76 | 45.69 | |||||||||||||
S.D. | 3.20 | 3.15 | 2.63 | 2.15 | 2.32 | 2.47 | 2.06 | 2.03 | 2.25 | 1.71 | 2.71 | 2.55 | 1.50 | |||||||||||||
SKEW | 0.42 | 0.34 | 0.14 | -0.08 | 0.43 | 0.45 | 0.63 | 0.32 | 0.04 | -0.24 | -0.45 | -0.18 | 0.04 | |||||||||||||
MAX | 41.17 | 42.34 | 45.23 | 47.98 | 56.63 | 60.20 | 65.34 | 63.53 | 59.37 | 49.97 | 41.81 | 38.52 | 48.52 | |||||||||||||
MIN | 25.31 | 29.96 | 32.73 | 39.10 | 46.02 | 51.43 | 56.23 | 54.50 | 49.98 | 42.53 | 31.38 | 28.38 | 42.62 | |||||||||||||
YRS | 33 | 36 | 36 | 33 | 35 | 33 | 34 | 34 | 35 | 30 | 34 | 33 | 16 |