YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1939 | ----- | z | 42.77 | 56.16 | 65.40 | a | 70.89 | 78.88 | 79.94 | 77.32 | 72.72 | 59.95 | 48.81 | a | 45.03 | 63.44 | a | |||||||||
1940 | 38.27 | 46.48 | 54.23 | 58.88 | 68.95 | 74.82 | 78.69 | 75.79 | 72.60 | 61.23 | 46.33 | 45.61 | 60.16 | |||||||||||||
1941 | 42.56 | 48.34 | 49.77 | 56.13 | 70.37 | 74.23 | 78.35 | 76.69 | 72.28 | 62.82 | 50.87 | 44.31 | 60.56 | |||||||||||||
1942 | 43.66 | 44.54 | 49.87 | 60.15 | 67.98 | 77.47 | 79.78 | a | 77.05 | 70.21 | a | 61.11 | 53.82 | 45.68 | 60.94 | |||||||||||
1943 | 42.53 | 49.28 | a | 54.28 | a | 64.72 | 72.62 | a | 77.38 | 79.21 | 82.42 | 70.97 | 60.45 | b | 49.36 | b | 42.23 | a | 62.12 | |||||||
1944 | 38.66 | 47.50 | 50.98 | 58.65 | 68.87 | 75.78 | 79.76 | 77.08 | 69.22 | 62.00 | 47.70 | 40.20 | a | 59.70 | ||||||||||||
1945 | 41.47 | 46.68 | 51.47 | a | 59.07 | a | 68.03 | a | 73.20 | 78.53 | 77.94 | 71.62 | 60.94 | 50.08 | ----- | z | 61.73 | a | ||||||||
1946 | 41.89 | q | 45.95 | 55.11 | 64.80 | 68.23 | 78.95 | 79.23 | 80.11 | 75.03 | ----- | z | 48.27 | b | 45.73 | 64.14 | b | |||||||||
1947 | 39.77 | a | 47.68 | 54.26 | 59.40 | 70.73 | 77.47 | ----- | z | 78.13 | 72.70 | 66.25 | g | 47.37 | 38.28 | a | 58.58 | b | ||||||||
1948 | 40.61 | c | 46.33 | b | 49.63 | a | 64.23 | 71.02 | a | 79.27 | 80.76 | 78.61 | 73.08 | 61.32 | 45.55 | 46.25 | a | 61.39 | ||||||||
1949 | 36.09 | b | 45.41 | 54.89 | 60.55 | 70.10 | 78.87 | 80.77 | 78.24 | 74.10 | 61.40 | 53.87 | 41.88 | a | 61.35 | |||||||||||
1950 | 47.16 | 51.57 | 56.16 | 64.62 | 69.27 | 80.42 | 78.94 | 77.61 | 71.72 | 68.47 | 51.79 | a | 47.48 | 63.77 | ||||||||||||
1951 | 43.03 | 46.02 | a | 54.07 | a | 60.73 | 70.18 | 77.77 | 83.92 | 81.05 | 74.83 | 65.45 | 50.02 | 46.10 | 62.76 | |||||||||||
1952 | 49.76 | 46.88 | 50.77 | 62.58 | 71.00 | 80.58 | 79.65 | 81.23 | 73.59 | a | 62.45 | 48.38 | 42.84 | 62.48 | ||||||||||||
1953 | 47.60 | 47.30 | 56.90 | 63.27 | 67.16 | 81.20 | 81.16 | 79.63 | 71.88 | 61.43 | b | 51.20 | 36.45 | 62.10 | ||||||||||||
1954 | 44.92 | 50.70 | 54.08 | 66.72 | 71.81 | 77.15 | c | 82.13 | 78.40 | 76.23 | 65.29 | 52.12 | 44.03 | 63.63 | ||||||||||||
1955 | 40.78 | a | 43.90 | b | 56.68 | f | 62.60 | 70.31 | d | 77.86 | a | 78.53 | 79.31 | 74.30 | 63.90 | 52.67 | 46.95 | 62.83 | a | |||||||
1956 | 46.87 | 45.00 | a | 54.98 | 59.68 | 72.45 | 82.60 | 81.11 | 77.40 | 73.88 | 64.69 | 46.75 | 41.97 | 62.28 | ||||||||||||
1957 | 47.10 | 55.09 | 55.44 | 60.73 | 68.73 | 80.08 | 84.21 | 80.56 | 72.48 | 61.84 | 48.32 | 44.40 | 63.25 | |||||||||||||
1958 | 41.24 | 50.27 | 50.13 | 61.57 | 71.87 | 82.37 | 82.66 | 80.35 | 73.32 | 62.02 | 51.47 | 45.31 | 62.71 | |||||||||||||
1959 | 45.11 | 47.98 | 51.47 | 62.87 | 69.97 | 80.07 | 79.87 | 78.69 | 73.50 | 63.16 | 48.77 | 44.56 | 62.17 | |||||||||||||
1960 | 39.95 | 43.45 | 56.75 | a | 63.00 | 69.13 | 81.43 | 79.89 | 80.11 | 74.37 | 62.37 | 51.70 | 38.77 | 61.74 | ||||||||||||
1961 | 40.47 | 46.30 | 54.37 | 61.32 | 71.03 | 78.27 | 81.39 | 78.60 | 72.88 | 62.23 | 46.18 | 45.24 | 61.52 | |||||||||||||
1962 | 39.60 | a | 51.57 | 49.39 | 66.38 | 71.45 | 77.97 | 80.18 | 81.13 | 73.70 | 64.23 | 54.10 | 44.92 | 62.88 | ||||||||||||
1963 | 39.08 | 48.70 | 55.13 | 64.43 | 73.06 | 78.33 | 83.71 | 78.97 | 74.82 | 65.06 | 52.43 | 41.80 | a | 62.96 | ||||||||||||
1964 | 38.94 | 40.69 | 51.24 | 61.33 | 71.95 | 77.82 | 82.73 | 80.74 | 73.67 | 62.87 | 51.42 | 43.21 | 61.38 | |||||||||||||
1965 | 47.00 | 45.77 | 51.05 | 63.33 | 69.94 | 76.55 | 82.58 | 79.52 | 73.07 | 61.71 | 56.83 | 45.35 | 62.72 | |||||||||||||
1966 | 39.68 | 41.54 | 55.11 | 63.02 | 72.11 | 77.77 | 83.16 | 76.76 | 72.27 | 60.06 | 53.22 | 40.74 | 61.29 | |||||||||||||
1967 | 39.87 | 47.24 | a | 57.16 | 62.16 | b | 66.97 | 77.47 | 81.21 | 78.37 | a | 72.08 | 62.90 | 53.28 | 41.37 | 61.67 | ||||||||||
1968 | 42.56 | 50.53 | 52.71 | 61.05 | a | 71.71 | 80.47 | 79.42 | 78.10 | 71.93 | a | 65.42 | a | 51.67 | d | 40.96 | e | 62.21 | ||||||||
1969 | 47.90 | 48.12 | 50.10 | b | 65.17 | a | 71.98 | a | 79.75 | 83.56 | e | 83.55 | 74.33 | 63.31 | b | 48.94 | c | 46.05 | b | 63.57 | ||||||
1970 | 42.88 | a | 48.39 | 52.13 | 61.25 | 69.95 | b | 78.66 | b | 82.35 | 80.40 | 74.55 | a | 57.73 | c | 51.17 | c | 47.86 | b | 62.28 | ||||||
1971 | 44.23 | a | 47.54 | a | 55.28 | d | 61.28 | 68.95 | 79.77 | 83.20 | a | 78.13 | a | 74.66 | a | 61.52 | d | 52.62 | b | ----- | z | 64.29 | a | |||
1972 | 44.23 | a | 48.25 | a | 61.77 | e | 63.94 | e | 70.00 | d | 78.48 | b | 82.28 | b | 78.25 | c | 73.46 | d | 65.67 | d | 47.96 | g | 43.97 | 64.57 | a | |
1973 | 40.06 | d | 44.54 | c | 52.76 | 57.59 | b | 69.94 | 78.31 | a | 81.20 | a | 78.85 | 75.93 | a | 64.15 | d | 53.83 | f | 44.29 | e | 62.51 | a | |||
1974 | 43.88 | c | 45.15 | d | 58.79 | c | 65.41 | a | 74.43 | b | 82.28 | 81.58 | 78.27 | 70.33 | 65.10 | 51.50 | 42.53 | b | 63.27 | |||||||
1975 | 43.28 | a | 47.12 | 54.19 | 58.55 | 68.44 | 79.05 | 79.27 | 80.29 | 71.95 | 63.43 | c | 52.58 | f | 43.39 | d | 62.63 | a | ||||||||
1976 | 42.79 | 52.25 | a | 56.10 | 62.67 | 68.82 | 79.59 | a | 79.39 | 80.34 | 72.08 | 57.20 | k | 49.26 | k | 40.50 | a | 63.45 | b | |||||||
1977 | 42.19 | d | 48.30 | a | 52.08 | 63.45 | b | 71.11 | 82.08 | 82.43 | a | 84.15 | 77.74 | c | 64.58 | 53.67 | 47.97 | 64.14 | ||||||||
1978 | 44.47 | 47.09 | 57.68 | 64.67 | 71.52 | 83.28 | 84.79 | 79.74 | 71.28 | 63.70 | a | 54.43 | a | 42.23 | 63.74 | |||||||||||
1979 | 39.98 | 46.95 | 53.48 | 62.68 | 69.23 | a | 77.42 | 82.63 | 76.56 | 73.36 | a | 65.73 | e | 49.93 | b | 43.69 | 61.80 | |||||||||
1980 | 46.27 | 48.95 | 53.44 | 60.53 | a | 70.24 | b | 86.02 | 86.74 | 81.16 | 74.23 | 61.22 | a | 50.62 | a | 48.39 | 63.98 | |||||||||
1981 | 46.57 | a | 51.66 | 55.42 | 67.13 | 73.48 | 83.98 | 85.61 | 79.60 | 75.43 | 66.50 | 58.00 | 50.85 | d | 66.19 | |||||||||||
1982 | 47.92 | 52.06 | c | 59.82 | 67.34 | a | 71.82 | 83.12 | 85.27 | 85.05 | 77.88 | 65.24 | b | 52.86 | b | 42.95 | c | 65.94 | ||||||||
1983 | 43.46 | c | 49.68 | 54.47 | a | 56.55 | a | 70.68 | a | 78.88 | b | 85.32 | a | 82.50 | a | 78.88 | a | 65.95 | a | 54.57 | 46.15 | e | 63.92 | |||
1984 | 43.34 | c | 47.95 | a | 57.52 | a | 66.03 | a | 78.28 | d | 81.90 | 83.95 | 79.89 | 74.17 | 62.44 | d | 51.47 | 47.05 | 64.50 | |||||||
1985 | 41.66 | 48.76 | a | 56.61 | 65.76 | a | 73.66 | b | 80.97 | a | 83.52 | 82.27 | a | 73.72 | 63.35 | 55.12 | e | 45.65 | 64.25 | |||||||
1986 | 47.31 | b | 53.38 | 59.07 | a | 68.43 | a | 72.62 | a | 79.92 | 80.87 | 81.66 | b | 75.28 | 63.24 | b | 49.93 | b | 43.68 | l | 66.52 | a | ||||
1987 | 42.64 | c | 48.20 | a | 52.91 | c | 62.30 | 71.60 | 79.86 | a | 83.03 | 80.47 | 73.53 | a | 69.26 | 51.83 | 44.26 | n | 65.06 | a | ||||||
1988 | 43.55 | b | 49.69 | b | 56.00 | 64.07 | c | 72.37 | e | 78.19 | a | 81.71 | 79.82 | a | 73.85 | 68.53 | a | 54.70 | 47.69 | w | 65.68 | a | ||||
1989 | 44.83 | g | 52.89 | a | 61.55 | c | 70.07 | a | 75.10 | 83.25 | 84.24 | 80.62 | b | 74.86 | a | 65.38 | a | 54.25 | 42.54 | q | 70.22 | b | ||||
1990 | 45.50 | h | 49.58 | i | 57.25 | a | 67.02 | 73.58 | 88.25 | b | 81.89 | 77.97 | 74.48 | a | 64.52 | f | 53.52 | j | 47.11 | q | 74.35 | e | ||||
1991 | 44.35 | u | 51.48 | h | 55.28 | a | 64.03 | 74.24 | 80.80 | 80.85 | 80.56 | 71.90 | 65.71 | 51.00 | 46.52 | 67.09 | b | |||||||||
1992 | 43.09 | b | 49.93 | 56.63 | 66.68 | 71.45 | 80.75 | 84.15 | 80.94 | 77.17 | 66.83 | b | 48.09 | b | 43.70 | f | 65.97 | a | ||||||||
1993 | 48.50 | e | 49.57 | e | 56.63 | e | 66.26 | g | 74.68 | a | 82.57 | a | 84.39 | 82.44 | 75.69 | a | 63.25 | c | 52.41 | b | 45.52 | d | 65.06 | a | ||
1994 | 45.03 | a | 50.44 | c | 58.23 | 65.94 | c | 75.23 | 87.34 | a | 86.60 | a | 86.03 | 77.36 | a | 65.37 | d | 54.31 | c | 48.52 | f | 68.35 | a | |||
1995 | 46.98 | 55.21 | d | 58.23 | c | 63.50 | 73.00 | 82.17 | 84.84 | 84.85 | 75.78 | 66.82 | 56.03 | 54.69 | r | 67.95 | a | |||||||||
1996 | 47.16 | b | 55.25 | c | 56.52 | 66.16 | a | 79.26 | 85.25 | 85.85 | 81.35 | 74.83 | 66.67 | b | 54.43 | a | ----- | z | 68.43 | a | ||||||
1997 | 43.09 | h | 49.04 | b | 59.70 | a | 62.19 | a | 75.63 | d | 81.73 | 84.68 | a | 83.02 | 80.10 | 65.80 | a | 53.15 | 47.00 | y | 69.50 | b | ||||
1998 | 47.59 | d | 46.65 | b | 54.93 | c | 61.83 | a | 74.41 | b | 83.16 | a | 85.79 | 82.81 | 80.88 | 66.22 | d | 58.18 | 48.15 | u | 67.50 | a | ||||
1999 | 50.26 | f | 55.27 | 60.75 | a | 65.34 | a | 75.46 | c | 81.85 | 84.15 | 84.78 | a | 78.52 | 67.25 | c | 60.88 | e | ----- | z | 71.43 | b | ||||
2000 | 51.10 | g | 59.53 | l | 59.35 | 71.07 | b | 80.21 | 83.14 | a | 86.88 | a | 83.79 | b | 80.85 | d | 64.76 | b | 49.53 | m | ----- | z | 76.26 | d | ||
2001 | 44.71 | c | 52.34 | c | 58.40 | a | 66.94 | d | 78.24 | 85.20 | 86.68 | a | 83.37 | 77.87 | c | 68.08 | 56.35 | f | 45.67 | s | 70.18 | b | ||||
2002 | 49.19 | o | 46.33 | j | 56.91 | c | 71.15 | c | 75.83 | b | 86.44 | d | 83.92 | a | 85.97 | a | 78.71 | b | 65.28 | f | 55.81 | n | 48.54 | q | 76.99 | e |
2003 | 51.88 | k | 52.17 | j | 58.29 | j | 66.72 | e | 76.88 | f | 83.38 | a | 86.70 | c | 86.23 | c | 79.52 | c | 71.41 | i | 59.06 | m | 49.94 | w | 80.51 | g |
2004 | 47.74 | j | 47.38 | m | 62.75 | g | 65.20 | h | 76.83 | b | 83.08 | 85.06 | 81.74 | 75.52 | b | 67.63 | a | 51.70 | b | 46.46 | r | 74.51 | e | |||
2005 | 50.08 | l | ----- | z | 55.27 | k | 67.46 | g | 76.90 | g | 85.26 | e | 87.77 | e | 82.93 | a | 80.46 | d | 67.48 | f | 58.95 | k | 44.65 | u | 84.11 | h |
2006 | ----- | z | 45.28 | s | 61.71 | q | 69.86 | e | 77.80 | d | 85.05 | a | ----- | z | 80.76 | 73.60 | a | 67.65 | e | 56.44 | l | 47.46 | q | 75.79 | f | |
2007 | 44.84 | o | 49.79 | i | 55.15 | d | 65.17 | a | 74.89 | c | 83.65 | 84.95 | 85.07 | a | 79.02 | 69.33 | e | 60.02 | i | 52.00 | o | 74.65 | d | |||
2008 | 46.84 | l | 54.71 | j | 59.26 | b | 66.45 | b | 76.35 | d | 87.00 | 82.09 | b | 81.47 | 74.12 | 67.08 | f | 56.78 | n | 54.70 | u | 75.25 | e | |||
2009 | 49.36 | m | 54.18 | i | 59.69 | e | 65.60 | e | 78.29 | b | 83.20 | 88.21 | c | 85.43 | h | 76.58 | f | ----- | z | ----- | z | ----- | z | 75.00 | g | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 43.38 | 48.37 | 55.18 | 63.59 | 72.14 | 80.65 | 82.61 | 80.48 | 74.53 | 64.10 | 51.76 | 44.11 | 62.63 | |||||||||||||
S.D. | 3.15 | 3.25 | 3.11 | 3.28 | 3.07 | 3.18 | 2.57 | 2.54 | 2.66 | 2.54 | 3.12 | 2.83 | 1.44 | |||||||||||||
SKEW | -0.02 | 0.18 | -0.01 | 0.04 | 0.69 | 0.20 | 0.17 | 0.46 | 0.68 | 0.05 | 0.33 | -0.39 | 0.37 | |||||||||||||
MAX | 49.76 | 55.27 | 61.77 | 71.15 | 80.21 | 88.25 | 88.21 | 86.23 | 80.88 | 69.33 | 60.88 | 50.85 | 66.19 | |||||||||||||
MIN | 36.09 | 40.69 | 49.39 | 56.13 | 66.97 | 73.20 | 78.35 | 75.79 | 69.22 | 57.73 | 45.55 | 36.45 | 59.70 | |||||||||||||
YRS | 55 | 60 | 66 | 68 | 69 | 71 | 69 | 70 | 70 | 62 | 57 | 47 | 37 |