YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1916 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 59.98 | j | 59.13 | e | 59.84 | c | ----- | z | 47.85 | h | 39.56 | c | 37.11 | 48.91 | h | |
1917 | 36.76 | 37.64 | 40.02 | 46.22 | 50.98 | a | 54.50 | 58.25 | s | 61.08 | e | 56.57 | 50.38 | b | 46.95 | 40.77 | 47.44 | a | ||||||||
1918 | 39.80 | i | 39.74 | e | 41.53 | 48.58 | 51.85 | 59.58 | 60.89 | 61.44 | e | 60.73 | b | 52.02 | h | ----- | z | ----- | z | 53.04 | d | |||||
1919 | ----- | z | ----- | z | 42.48 | a | 47.22 | 49.72 | a | ----- | z | ----- | z | 58.57 | c | 57.12 | i | 47.36 | j | 43.30 | j | 36.40 | b | 46.88 | g | |
1920 | 38.22 | b | 38.59 | 40.85 | 41.84 | n | 43.89 | 55.29 | w | 60.10 | 58.59 | n | 54.07 | a | 47.31 | 43.09 | a | 40.32 | 45.16 | c | ||||||
1921 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 56.09 | b | 56.33 | p | 57.57 | a | 52.58 | r | 49.96 | e | 42.11 | b | 37.98 | f | 51.43 | h |
1922 | 33.90 | b | 35.31 | a | 38.79 | b | 42.38 | j | ----- | z | ----- | z | 58.85 | 59.34 | 56.03 | 49.94 | 40.48 | b | 33.38 | b | 45.11 | c | ||||
1923 | 38.09 | c | 35.30 | c | 40.71 | b | 48.02 | b | 51.75 | a | 56.17 | a | 59.87 | e | 61.77 | c | 57.75 | d | 50.10 | 42.67 | a | 38.45 | b | 48.39 | ||
1924 | 37.87 | 42.72 | 41.90 | 45.15 | 51.12 | a | 51.59 | a | 54.29 | b | 56.95 | t | 54.47 | a | 49.70 | d | 40.65 | 33.31 | b | 45.71 | a | |||||
1925 | 38.29 | 41.77 | 41.76 | 46.80 | 53.38 | c | 56.33 | c | 59.67 | a | ----- | z | ----- | z | ----- | z | ----- | z | 42.40 | b | 47.55 | d | ||||
1926 | 39.53 | 43.18 | 46.05 | 51.00 | a | 52.68 | a | 60.39 | c | 60.52 | 59.15 | k | 51.80 | h | 52.00 | a | 45.62 | a | 39.13 | a | 49.01 | b | ||||
1927 | 38.23 | 41.30 | 41.84 | 44.90 | 49.87 | 57.58 | 60.50 | a | 60.40 | a | 55.88 | 50.17 | a | 40.72 | c | 33.23 | g | 49.22 | a | |||||||
1928 | 39.52 | 40.12 | 44.04 | c | 45.72 | 53.84 | 57.14 | a | ----- | z | ----- | z | ----- | z | 47.73 | a | 43.88 | d | 38.32 | 45.59 | c | |||||
1929 | 33.06 | 36.54 | c | 43.00 | a | 43.25 | b | 50.27 | 56.67 | c | 59.47 | a | 58.87 | 56.81 | a | 51.26 | n | 40.40 | a | 39.17 | a | 47.05 | a | |||
1930 | 28.12 | c | 40.08 | i | 41.29 | 47.17 | a | 48.89 | 54.93 | b | 57.21 | b | 58.87 | a | 56.16 | a | 46.95 | 41.69 | a | 39.67 | b | 47.36 | a | |||
1931 | 41.17 | b | 40.66 | 43.47 | a | 49.17 | a | 53.70 | a | 56.22 | c | 60.86 | f | 58.52 | d | 56.00 | b | 48.80 | c | 39.45 | 37.48 | a | 47.70 | a | ||
1932 | 35.52 | a | 37.97 | 42.92 | e | 47.45 | a | 50.17 | e | 56.65 | 56.28 | b | 58.90 | b | 55.16 | e | 49.53 | 45.88 | b | 35.53 | 47.66 | |||||
1933 | 36.76 | 35.37 | a | 41.38 | b | 45.57 | c | 49.87 | e | 54.56 | c | 57.76 | b | 61.62 | a | 53.09 | a | 50.03 | a | 43.77 | b | 40.47 | 47.52 | |||
1934 | 41.52 | a | 42.67 | b | 46.32 | c | 51.97 | 53.41 | b | 56.70 | c | 58.07 | d | 60.96 | c | 55.60 | 50.81 | 45.93 | 39.92 | 50.32 | ||||||
1935 | 36.34 | b | 40.35 | d | 40.33 | a | 45.16 | e | 50.73 | a | 57.19 | a | 59.77 | a | 60.12 | a | 57.20 | y | 47.45 | 40.40 | a | 40.37 | l | 47.78 | b | |
1936 | 39.68 | 31.66 | 40.42 | 49.22 | 54.13 | 58.52 | e | 60.15 | 61.67 | a | 54.77 | 52.63 | 42.98 | b | 39.77 | a | 48.80 | |||||||||
1937 | 28.63 | 36.74 | a | 44.24 | 45.80 | 51.78 | a | 56.90 | a | 56.95 | l | ----- | z | ----- | z | ----- | z | 47.28 | 42.23 | 44.20 | d | |||||
1938 | 40.19 | 40.45 | 43.40 | 49.35 | 54.00 | 59.09 | b | 63.17 | a | 60.10 | 61.85 | 52.20 | a | 43.47 | 42.23 | 50.79 | ||||||||||
1939 | 43.83 | a | 39.34 | 43.68 | 49.73 | 54.08 | 56.70 | 61.45 | 65.32 | ----- | z | 52.18 | 48.43 | 44.65 | 50.85 | a | ||||||||||
1940 | 41.81 | 43.76 | 47.03 | 51.88 | 56.34 | 59.77 | 61.20 | a | 63.40 | 60.23 | 52.83 | j | 41.97 | 43.58 | a | 51.91 | a | |||||||||
1941 | 41.69 | 44.96 | 47.82 | 52.15 | f | 54.57 | a | 58.60 | 65.48 | a | 62.23 | 55.97 | 51.50 | 45.85 | 40.77 | 51.77 | a | |||||||||
1942 | 39.50 | 41.75 | 43.45 | 49.47 | 54.08 | 58.78 | 63.42 | 63.53 | 57.80 | 52.00 | a | 41.90 | 41.08 | a | 50.56 | |||||||||||
1943 | 33.94 | 42.05 | 42.73 | 50.31 | a | 51.58 | 56.42 | 59.47 | 59.60 | 59.02 | 51.45 | a | 45.17 | 40.58 | 49.36 | |||||||||||
1944 | 40.18 | 40.76 | 42.50 | 47.98 | ----- | z | ----- | z | ----- | z | 59.93 | b | 59.08 | 54.11 | 45.73 | b | 38.97 | 47.69 | c | |||||||
1945 | 41.53 | 41.86 | 42.63 | 45.86 | a | 54.79 | 56.45 | 59.78 | a | 59.50 | 56.29 | a | 52.02 | 41.67 | 40.11 | 49.37 | ||||||||||
1946 | 40.63 | 41.17 | a | 42.82 | 46.73 | 55.23 | a | 56.16 | a | 60.52 | a | 60.06 | 56.22 | 48.00 | 40.78 | a | 38.77 | 48.92 | ||||||||
1947 | 35.34 | 43.26 | c | 44.97 | 48.52 | 55.37 | 57.47 | a | 60.29 | 59.98 | 57.35 | 49.23 | a | 42.55 | 40.84 | 49.60 | ||||||||||
1948 | 38.60 | 38.46 | a | 41.43 | a | 44.62 | 51.84 | 60.10 | 60.03 | 59.21 | 56.70 | 48.61 | 42.30 | 35.13 | 48.09 | |||||||||||
1949 | 31.24 | 36.05 | 43.94 | 47.63 | 54.90 | 55.78 | 58.32 | 60.58 | a | 58.20 | 46.82 | 46.90 | a | 37.95 | 48.19 | |||||||||||
1950 | 24.82 | 40.38 | c | 40.34 | 45.20 | 49.58 | 58.22 | 59.19 | 60.31 | 57.07 | 47.68 | 41.78 | 42.48 | 47.25 | ||||||||||||
1951 | 37.11 | 39.07 | 39.15 | 48.30 | 53.06 | 58.88 | 60.35 | 60.08 | 56.53 | 49.08 | 43.30 | 36.50 | 48.45 | |||||||||||||
1952 | 35.32 | 39.28 | 41.37 | 46.65 | 51.53 | 54.21 | a | 59.42 | 60.68 | 58.78 | 52.88 | a | 41.62 | 40.11 | 48.49 | |||||||||||
1953 | 41.45 | 40.35 | a | 41.81 | 45.92 | 51.89 | 54.50 | a | 59.90 | 61.82 | 57.78 | 51.37 | 46.67 | 41.67 | a | 49.59 | ||||||||||
1954 | 35.57 | a | 41.50 | a | 40.55 | 44.30 | 51.58 | a | 53.35 | 57.78 | a | 57.92 | 58.09 | a | 48.69 | 47.95 | b | 40.52 | k | 48.84 | a | |||||
1955 | 39.39 | m | 40.38 | p | 39.56 | 44.67 | 49.50 | a | 56.07 | 57.40 | 59.03 | b | 57.80 | 48.45 | c | 35.56 | e | 35.59 | d | 48.36 | b | |||||
1956 | 36.65 | d | 35.40 | 40.14 | b | 48.07 | 55.33 | a | 54.04 | b | 61.41 | d | 60.53 | a | 56.52 | c | 51.95 | a | 45.65 | 42.08 | 48.98 | |||||
1957 | 36.52 | 41.52 | 46.10 | a | 47.21 | a | 57.05 | t | 58.37 | 59.45 | 60.18 | 62.02 | a | 50.07 | a | 43.04 | b | 41.63 | a | 49.64 | a | |||||
1958 | 42.21 | 45.88 | 43.98 | 48.17 | 57.19 | 63.07 | 66.33 | a | 63.68 | 58.43 | 51.79 | 41.55 | 43.45 | 52.14 | ||||||||||||
1959 | 39.34 | 40.45 | 43.19 | 48.43 | a | 52.18 | a | 58.42 | 62.84 | 60.05 | 56.73 | 50.47 | 42.37 | 40.27 | a | 49.56 | ||||||||||
1960 | 38.94 | 40.81 | 42.53 | 49.00 | 52.27 | 57.07 | 62.69 | 60.97 | 57.40 | 52.11 | 43.77 | 40.53 | 49.84 | |||||||||||||
1961 | 43.08 | 43.86 | 45.66 | 47.97 | 53.53 | 60.52 | 64.29 | 64.02 | 57.08 | 49.50 | 40.68 | 39.37 | 50.80 | |||||||||||||
1962 | 39.58 | 42.00 | 41.79 | 48.88 | 50.81 | 56.80 | 60.05 | 60.56 | 58.48 | a | 51.92 | 45.58 | 42.76 | 49.93 | ||||||||||||
1963 | 36.55 | 45.76 | a | 43.79 | 47.80 | b | 54.95 | 57.72 | a | 59.92 | a | 61.68 | 61.28 | 52.73 | 44.25 | 42.13 | 50.71 | |||||||||
1964 | 41.00 | b | 41.64 | 43.53 | 46.82 | 51.48 | c | 56.72 | 60.45 | 60.68 | 57.00 | 50.84 | 41.85 | 35.85 | a | 48.99 | ||||||||||
1965 | 38.89 | 42.04 | a | 44.35 | 48.60 | a | 51.05 | 57.47 | 62.21 | 62.48 | a | 56.53 | 53.50 | 46.10 | a | 40.02 | 50.27 | |||||||||
1966 | 39.08 | 42.23 | 43.90 | 48.57 | 52.97 | 57.17 | a | 59.92 | 62.08 | 59.97 | 50.68 | 45.62 | 43.13 | 50.44 | ||||||||||||
1967 | 41.81 | b | 43.09 | a | 42.11 | c | 46.29 | a | 53.42 | 60.91 | a | 61.76 | 65.05 | 61.47 | 51.94 | 45.07 | a | 40.42 | a | 51.11 | ||||||
1968 | 40.05 | 43.90 | 45.82 | a | 46.83 | 54.85 | 57.34 | a | 63.84 | 60.79 | 57.95 | 49.66 | 44.88 | a | 36.03 | 50.16 | ||||||||||
1969 | 31.34 | 39.46 | 45.21 | 47.30 | 56.28 | a | 62.35 | 61.48 | 59.95 | 58.13 | 50.84 | 44.73 | 42.37 | 49.95 | ||||||||||||
1970 | 39.56 | 44.04 | 45.18 | 46.92 | 52.15 | 59.95 | 61.53 | 61.02 | 55.68 | 49.26 | 43.77 | 38.73 | 49.81 | |||||||||||||
1971 | 39.56 | 41.18 | 41.40 | 47.63 | 53.84 | 55.12 | b | 62.66 | 64.82 | 57.27 | 50.11 | 44.70 | 36.39 | 49.56 | ||||||||||||
1972 | 35.48 | 40.47 | 44.82 | 44.92 | 56.29 | 57.48 | 63.26 | 64.02 | 55.50 | 50.39 | 44.58 | 36.95 | 49.51 | |||||||||||||
1973 | 37.00 | 41.95 | 45.00 | 48.48 | 54.40 | a | 57.18 | 62.78 | a | 59.60 | 59.37 | 50.33 | a | 41.00 | 43.34 | 50.04 | ||||||||||
1974 | 38.53 | 41.96 | 44.31 | 49.13 | c | 51.57 | b | 58.08 | d | 60.74 | 62.20 | a | 60.60 | a | 51.45 | 44.62 | 41.85 | a | 50.42 | |||||||
1975 | 38.71 | b | 39.68 | k | 42.56 | 45.69 | a | 53.11 | 57.35 | 62.10 | a | 59.88 | c | 59.93 | a | 50.02 | b | 42.43 | 41.19 | o | 51.18 | b | ||||
1976 | 39.77 | 40.88 | 40.98 | 48.30 | 52.89 | 56.28 | 60.69 | d | 60.18 | c | 60.45 | 51.05 | ----- | z | 42.16 | 50.33 | a | |||||||||
1977 | 38.08 | a | 44.80 | 43.42 | 49.42 | 52.16 | 58.65 | 60.00 | 65.08 | 57.03 | 49.58 | a | 41.87 | 39.37 | 49.96 | |||||||||||
1978 | 41.50 | b | 43.44 | a | 46.52 | b | 48.20 | 52.95 | 61.55 | 63.32 | 62.19 | 57.00 | a | 52.23 | 39.55 | 36.92 | 50.45 | |||||||||
1979 | 33.24 | 39.44 | a | 46.03 | b | 47.92 | 54.55 | a | 56.98 | a | 62.79 | b | 62.68 | a | 61.82 | 53.02 | 42.38 | b | 42.76 | 50.30 | ||||||
1980 | 34.43 | b | 43.27 | a | 44.14 | c | 50.70 | 53.97 | a | 56.05 | a | 59.76 | 60.83 | a | 57.45 | b | ----- | z | ----- | z | ----- | z | 51.18 | c | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 37.75 | 40.70 | 43.00 | 47.55 | 52.67 | 57.35 | 60.62 | 60.98 | 57.66 | 50.44 | 43.29 | 39.71 | 49.59 | |||||||||||||
S.D. | 3.73 | 2.86 | 2.07 | 1.87 | 2.26 | 2.15 | 2.17 | 1.83 | 2.06 | 1.72 | 2.48 | 2.66 | 1.07 | |||||||||||||
SKEW | -1.22 | -0.75 | 0.15 | 0.10 | -0.83 | 0.24 | 0.02 | 0.67 | 0.38 | -0.19 | -0.23 | -0.48 | -0.25 | |||||||||||||
MAX | 43.83 | 45.88 | 47.82 | 51.97 | 57.19 | 63.07 | 66.33 | 65.32 | 62.02 | 54.11 | 48.43 | 44.65 | 52.14 | |||||||||||||
MIN | 24.82 | 31.66 | 38.79 | 43.25 | 43.89 | 51.59 | 54.29 | 57.57 | 53.09 | 46.82 | 35.56 | 33.31 | 47.25 | |||||||||||||
YRS | 60 | 59 | 63 | 60 | 60 | 60 | 58 | 59 | 56 | 57 | 60 | 58 | 38 |