YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1940 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1941 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1942 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1943 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1944 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1945 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 79.82 | a | 72.65 | 62.08 | 50.88 | 43.29 | 61.74 | g | ||||
1963 | 39.18 | 46.66 | 52.80 | a | 62.05 | 71.48 | a | 77.08 | 81.47 | 76.76 | 71.93 | 63.65 | 50.97 | 41.37 | 61.28 | |||||||||||
1964 | 37.63 | 38.30 | a | 49.13 | 59.28 | 69.16 | 76.07 | 80.10 | 78.73 | 72.55 | 61.08 | 49.72 | 42.40 | 59.51 | ||||||||||||
1965 | 45.95 | 44.05 | 47.66 | 61.57 | 67.95 | 75.43 | 80.71 | 77.45 | 72.23 | 60.61 | 55.00 | 44.81 | 61.12 | |||||||||||||
1966 | 37.98 | 40.80 | 53.87 | 60.93 | 70.44 | 75.53 | 81.52 | 76.15 | 70.55 | 58.89 | 53.30 | 40.98 | 60.08 | |||||||||||||
1967 | 41.13 | 46.32 | 56.98 | a | 62.57 | 67.05 | 76.53 | a | 79.79 | 75.73 | 70.97 | 62.68 | 51.85 | 39.69 | 60.94 | |||||||||||
1968 | 42.97 | 47.17 | 50.74 | 57.53 | 68.73 | a | 77.72 | 76.95 | 76.03 | 69.58 | 63.52 | 48.42 | 40.58 | 60.00 | ||||||||||||
1969 | 46.98 | 45.95 | 45.47 | 62.02 | 69.71 | 77.13 | 81.48 | 81.71 | 72.05 | 61.87 | 48.55 | 44.45 | 61.45 | |||||||||||||
1970 | 41.92 | 45.57 | 49.13 | 58.47 | 67.94 | 75.18 | 78.94 | 77.53 | 71.33 | 56.53 | 49.43 | 46.79 | 59.90 | |||||||||||||
1971 | 44.24 | 45.73 | 54.69 | 58.92 | 67.73 | 76.42 | 80.03 | 73.60 | 70.88 | 60.76 | 51.40 | 44.19 | 60.72 | |||||||||||||
1972 | 44.15 | 48.67 | 58.08 | 62.80 | 68.34 | 76.85 | 78.94 | 75.23 | 70.60 | 63.56 | 44.95 | 42.03 | 61.18 | |||||||||||||
1973 | 38.66 | 42.73 | 49.63 | 55.08 | 67.76 | 73.77 | 77.81 | 74.95 | 72.42 | 61.29 | 52.28 | 43.08 | 59.12 | |||||||||||||
1974 | 43.52 | 44.57 | 57.11 | 61.50 | 72.06 | 78.72 | 77.68 | 74.98 | 66.93 | 60.31 | 48.15 | 40.56 | 60.51 | |||||||||||||
1975 | 42.15 | 45.50 | a | 51.61 | 54.68 | 63.29 | 75.15 | 75.15 | 74.85 | 67.83 | a | 60.57 | a | 48.48 | 42.45 | 58.48 | ||||||||||
1976 | 41.03 | 50.07 | 52.92 | 59.05 | 66.15 | 76.72 | 75.85 | 76.45 | 69.65 | 56.84 | 42.55 | 39.47 | 58.90 | |||||||||||||
1977 | 41.02 | a | 46.12 | 49.48 | 59.83 | 68.63 | 79.00 | 79.24 | 81.16 | 76.42 | 63.24 | 51.10 | 48.04 | f | 63.20 | a | ||||||||||
1978 | 42.61 | 44.43 | 54.19 | 61.98 | 69.31 | 79.53 | a | 80.53 | a | 74.45 | u | 61.40 | t | 60.56 | 52.02 | 41.25 | a | 58.64 | b | |||||||
1979 | 37.82 | a | 43.61 | e | 49.24 | 58.65 | d | 66.13 | l | 74.35 | 80.59 | b | 75.00 | e | 68.67 | 63.16 | 44.27 | 41.79 | 57.92 | a | ||||||
1980 | ----- | z | 47.14 | 49.40 | ----- | z | 66.55 | 82.25 | 82.65 | 77.74 | 71.47 | ----- | z | 45.47 | 45.32 | 63.11 | c | |||||||||
1981 | 41.43 | a | 48.88 | 51.63 | e | 64.16 | a | 70.90 | 78.88 | 80.48 | 75.41 | d | 71.19 | l | 62.81 | b | 52.60 | 45.92 | a | 61.19 | a | |||||
1982 | 42.62 | b | 47.33 | h | 55.81 | b | 65.81 | i | 69.07 | d | 78.37 | 80.13 | 78.21 | e | 73.09 | a | 59.76 | f | 46.93 | 38.59 | c | 62.54 | c | |||
1983 | 39.68 | a | 44.89 | a | 50.93 | a | 51.86 | a | 65.05 | a | 73.62 | a | 79.52 | a | 78.81 | 73.45 | a | 63.30 | c | 51.38 | 41.12 | b | 59.47 | |||
1984 | 42.48 | c | 44.53 | 51.88 | a | 59.63 | 71.97 | a | 76.47 | 77.52 | 72.10 | b | 69.09 | a | 57.82 | a | 49.75 | 45.95 | a | 59.93 | ||||||
1985 | 41.05 | a | 44.95 | i | 52.52 | j | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 69.58 | l | 60.55 | b | 50.84 | b | 40.37 | l | 50.81 | i |
1986 | ----- | z | 49.29 | b | 54.34 | b | 64.29 | d | 66.74 | d | 74.35 | d | 75.72 | d | 75.37 | e | 69.64 | l | 58.48 | a | 46.04 | c | 39.86 | c | 60.45 | b |
1987 | 38.65 | d | 41.95 | f | 47.73 | 55.34 | a | 64.00 | d | ----- | z | 77.28 | b | ----- | z | 67.82 | 63.55 | ----- | z | 39.60 | b | 56.75 | d | |||
1988 | 40.03 | a | 46.25 | c | 49.10 | b | 57.86 | a | ----- | z | 74.91 | c | 76.62 | b | 73.57 | j | 68.53 | a | 61.97 | b | ----- | z | 39.05 | b | 57.15 | c |
1989 | ----- | z | 45.74 | a | 53.67 | g | ----- | z | 69.69 | b | 76.76 | e | 79.45 | 76.22 | b | 69.17 | a | 60.76 | d | 49.58 | 37.24 | b | 62.74 | c | ||
1990 | 40.52 | b | 43.52 | 51.92 | a | 62.05 | b | 67.40 | 81.75 | b | 76.40 | b | 73.53 | b | 70.41 | c | 61.23 | 52.38 | a | 42.78 | b | 60.32 | ||||
1991 | 41.02 | c | 48.02 | 51.12 | a | 59.30 | 68.62 | b | 75.58 | 75.00 | 75.34 | 67.37 | 60.95 | a | 46.68 | 42.24 | 59.27 | |||||||||
1992 | 38.05 | a | 45.38 | a | 51.43 | c | 61.74 | c | 65.82 | 74.73 | 79.40 | a | 77.15 | 74.66 | a | 64.37 | a | 47.19 | a | 43.76 | 60.31 | |||||
1993 | 46.20 | d | 47.25 | 53.22 | a | 61.25 | 69.22 | a | 77.25 | 80.45 | b | 78.06 | 70.91 | c | 59.64 | b | 48.30 | 42.48 | b | 61.19 | ||||||
1994 | 42.05 | 45.41 | 54.80 | a | 60.16 | b | 69.98 | b | 82.79 | d | 82.02 | b | 80.85 | a | 72.71 | a | 62.44 | 51.61 | c | 45.67 | b | 62.54 | ||||
1995 | ----- | z | 50.98 | f | 54.19 | d | 59.02 | b | 67.78 | d | 75.59 | a | 81.98 | a | 78.40 | a | 72.84 | b | 63.17 | b | 52.54 | b | 44.60 | 65.01 | b | |
1996 | 43.76 | d | 49.98 | a | 51.23 | a | 61.20 | b | 74.48 | c | 78.36 | e | 80.04 | d | 76.20 | d | 70.41 | b | 61.79 | b | 50.64 | a | 42.98 | b | 61.76 | |
1997 | 41.45 | b | 44.50 | a | 56.05 | a | 56.69 | c | 70.05 | a | 76.23 | b | 79.59 | b | 78.22 | a | 74.68 | 59.20 | d | 49.44 | c | 39.93 | a | 60.50 | ||
1998 | 42.36 | b | 42.79 | d | 52.62 | k | 56.97 | 69.26 | 78.20 | b | 80.34 | 76.70 | c | 74.57 | a | 62.59 | b | 53.03 | 42.60 | b | 61.76 | a | ||||
1999 | 44.67 | e | 49.94 | c | 53.84 | b | 58.37 | d | 68.07 | c | 76.41 | a | 78.29 | 76.95 | b | 71.50 | 61.13 | a | 53.07 | 39.12 | b | 60.95 | ||||
2000 | 45.32 | a | 49.93 | a | 53.69 | 64.07 | c | 74.15 | a | 77.60 | a | 80.03 | 77.53 | b | 74.48 | 61.58 | a | 44.29 | a | 41.45 | c | 62.01 | ||||
2001 | 39.03 | a | 48.02 | 51.02 | 60.82 | b | 71.43 | a | 78.39 | l | 81.43 | x | 77.58 | r | 74.08 | q | 63.50 | m | 52.25 | l | 42.46 | q | 54.06 | g | ||
2002 | 43.69 | o | 43.62 | l | 53.63 | h | 65.83 | i | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 59.50 | b | 48.62 | f | 41.72 | a | 50.61 | j |
2003 | ----- | z | ----- | z | 51.62 | b | 60.50 | b | 69.52 | a | 76.84 | b | 79.33 | b | 78.37 | 72.23 | b | 65.07 | b | 51.27 | d | 41.52 | b | 64.63 | b | |
2004 | 43.81 | d | 42.98 | c | 56.00 | e | 61.33 | j | 70.21 | j | 76.11 | h | 79.00 | i | 73.75 | g | 69.65 | g | 61.41 | i | 44.19 | l | 40.75 | q | 47.60 | i |
2005 | 44.53 | m | 45.91 | l | 48.65 | k | 58.93 | b | 69.14 | b | 76.54 | b | 79.56 | n | 76.54 | c | 73.60 | d | 59.41 | b | 49.10 | a | 41.44 | g | 66.18 | e |
2006 | 43.80 | h | 46.02 | g | 53.92 | f | 63.40 | f | 71.78 | b | 77.70 | b | 79.40 | b | 75.13 | 66.78 | 59.91 | b | 51.17 | a | ----- | z | 68.84 | e | ||
2007 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 76.70 | 77.31 | 78.00 | 73.05 | a | 63.74 | ----- | z | ----- | z | 73.76 | g | ||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 41.75 | 45.85 | 52.20 | 59.76 | 68.88 | 76.98 | 79.14 | 76.84 | 71.28 | 61.34 | 49.67 | 42.12 | 60.46 | |||||||||||||
S.D. | 2.50 | 2.65 | 2.91 | 2.77 | 2.41 | 2.09 | 1.96 | 2.07 | 2.35 | 1.99 | 2.87 | 2.28 | 1.01 | |||||||||||||
SKEW | 0.15 | -0.44 | -0.01 | -0.67 | 0.04 | 0.97 | -0.45 | 0.28 | -0.12 | -0.45 | -0.61 | 0.13 | -0.00 | |||||||||||||
MAX | 46.98 | 50.07 | 58.08 | 64.29 | 74.48 | 82.79 | 82.65 | 81.71 | 76.42 | 65.07 | 55.00 | 46.79 | 62.54 | |||||||||||||
MIN | 37.63 | 38.30 | 45.47 | 51.86 | 63.29 | 73.62 | 75.00 | 72.10 | 66.78 | 56.53 | 42.55 | 37.24 | 58.48 | |||||||||||||
YRS | 36 | 36 | 38 | 37 | 39 | 40 | 40 | 39 | 39 | 42 | 40 | 39 | 25 |