YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1961 | ----- | z | ----- | z | ----- | z | ----- | z | 70.78 | k | 83.90 | i | 87.24 | l | 82.33 | h | 71.80 | j | 60.66 | l | 44.56 | l | 29.65 | d | 29.65 | k |
1962 | 33.75 | a | 43.36 | 46.27 | 64.57 | a | 67.76 | 77.92 | 85.13 | 83.73 | a | 76.31 | a | 62.95 | 50.50 | a | 37.83 | b | 60.84 | |||||||
1963 | 30.64 | j | 47.13 | a | 49.10 | 56.07 | a | 72.76 | 76.81 | a | 87.92 | 82.39 | 76.05 | a | 66.88 | a | 48.89 | b | 34.77 | 63.52 | a | |||||
1964 | 33.68 | 38.72 | b | 45.79 | b | 56.90 | 67.75 | a | 76.91 | c | 87.50 | 82.60 | 74.42 | 66.32 | 44.62 | 39.67 | b | 59.57 | ||||||||
1965 | 39.94 | 41.84 | 47.60 | a | 57.91 | c | 64.98 | 73.15 | 83.61 | c | 81.67 | a | 70.50 | 63.03 | 51.16 | a | 38.48 | 59.49 | ||||||||
1966 | 34.48 | 36.61 | 52.03 | 61.21 | a | 72.68 | 79.70 | b | 85.44 | 85.47 | 76.08 | 61.82 | 50.37 | 38.61 | 61.21 | |||||||||||
1967 | 34.29 | 43.69 | b | 53.56 | 55.17 | 67.40 | a | 74.86 | a | 86.66 | 83.98 | 75.15 | 64.45 | 50.42 | 28.77 | 59.87 | ||||||||||
1968 | 26.37 | 46.98 | 49.93 | h | 54.50 | b | 68.12 | c | 79.37 | 84.31 | 78.19 | 74.03 | a | 62.33 | d | 47.68 | 32.34 | 59.48 | a | |||||||
1969 | 40.94 | 41.63 | e | 47.98 | d | 60.07 | a | 72.00 | 78.02 | a | 85.22 | a | 85.98 | 75.97 | a | 58.08 | 46.81 | a | 39.71 | 61.03 | ||||||
1970 | 38.26 | 46.77 | 49.48 | a | 54.69 | a | 70.87 | a | 79.84 | b | 85.02 | b | 85.34 | 72.65 | 58.58 | 48.35 | 37.94 | 60.65 | ||||||||
1971 | 36.11 | 42.73 | 50.39 | 59.25 | 65.24 | b | 77.79 | a | 86.16 | 83.52 | 73.60 | 57.63 | a | 44.72 | 33.69 | 59.24 | ||||||||||
1972 | 38.00 | 45.44 | b | 58.13 | 61.02 | 70.93 | a | 79.40 | d | 87.13 | 82.52 | a | 73.57 | a | 59.66 | 44.28 | 34.40 | a | 61.21 | |||||||
1973 | 30.02 | a | 41.27 | 47.56 | 56.50 | a | 69.60 | a | 79.34 | a | 84.70 | a | 82.94 | 72.53 | a | 61.88 | a | 48.02 | a | 40.43 | a | 59.57 | ||||
1974 | 34.15 | a | 39.00 | 55.45 | 56.62 | 71.35 | a | 83.98 | 83.48 | a | 82.48 | a | 74.69 | d | 62.23 | 47.50 | 37.08 | 60.67 | ||||||||
1975 | 34.47 | 40.89 | 47.24 | 50.59 | b | 65.05 | 76.92 | 84.28 | a | 81.50 | a | 73.88 | a | 60.32 | 45.77 | 37.98 | 58.24 | |||||||||
1976 | 36.16 | 47.66 | a | 48.11 | 58.10 | 70.27 | a | 80.11 | c | 83.58 | a | 81.77 | 73.42 | 60.35 | a | 48.12 | 36.34 | 60.33 | ||||||||
1977 | 35.40 | 44.09 | 47.05 | 62.97 | a | 65.47 | a | 80.90 | 83.68 | a | 83.39 | 76.27 | 63.73 | 49.52 | a | 45.55 | a | 61.50 | ||||||||
1978 | 40.86 | b | 44.39 | a | 54.00 | a | 59.88 | a | 65.97 | n | 77.09 | n | 85.22 | o | 83.18 | a | 72.93 | 65.26 | 47.16 | a | 30.27 | a | 55.33 | c | ||
1979 | 30.68 | c | 35.61 | 48.20 | a | 58.73 | ----- | z | 75.75 | 85.50 | b | 79.63 | 76.40 | a | 64.84 | 45.23 | 37.65 | 58.02 | a | |||||||
1980 | 40.19 | 44.28 | 47.18 | 51.21 | w | 64.86 | j | ----- | z | 82.33 | a | 80.06 | 71.04 | d | 55.95 | j | ----- | z | 42.84 | f | 60.85 | f | ||||
1981 | 41.98 | a | 45.32 | 50.34 | 63.02 | 67.65 | d | 80.60 | a | 84.18 | a | 80.53 | a | 74.20 | 59.00 | a | 49.03 | 40.92 | 61.40 | |||||||
1982 | 37.61 | c | 40.43 | a | 50.32 | c | 58.56 | c | 67.36 | c | 76.38 | a | 82.74 | b | 80.74 | d | 73.80 | b | 56.32 | c | 46.23 | ----- | z | 60.95 | a | |
1983 | 38.33 | a | 44.71 | d | 51.50 | b | 53.30 | g | 65.11 | 76.31 | c | 81.36 | b | 81.98 | b | 75.76 | c | 62.76 | d | 49.12 | b | 42.73 | 60.88 | a | ||
1984 | 35.67 | d | 40.33 | c | 50.38 | k | 56.53 | a | 71.94 | d | 76.30 | e | 82.68 | i | 79.59 | i | 77.07 | g | 56.48 | h | 46.27 | h | 39.00 | j | 56.15 | g |
1985 | 37.52 | d | 38.90 | c | 49.52 | c | 62.41 | a | 70.46 | c | 80.70 | 84.85 | 82.90 | a | 70.56 | c | 60.98 | a | 46.93 | 39.58 | a | 60.44 | ||||
1986 | 42.05 | a | 47.39 | a | 54.75 | e | 60.30 | e | 68.57 | j | 79.83 | i | 82.89 | q | 82.39 | i | 68.68 | e | 58.09 | c | 49.40 | d | 39.67 | d | 52.54 | d |
1987 | 34.48 | f | 43.37 | b | 48.17 | b | 61.22 | a | 68.27 | a | 81.11 | c | 81.76 | b | 79.65 | d | 73.23 | d | 63.33 | e | 47.83 | d | 36.76 | f | 64.79 | b |
1988 | 36.75 | e | 41.96 | f | 50.27 | e | 57.84 | h | 67.02 | e | 78.20 | b | 83.88 | b | 80.10 | f | 69.39 | b | 66.04 | d | 51.61 | c | 40.48 | k | 62.89 | d |
1989 | 31.75 | a | 44.03 | j | 52.92 | l | 63.50 | 69.92 | e | 79.16 | e | 86.52 | c | 80.77 | c | 75.96 | g | 60.59 | i | 49.33 | i | 38.22 | m | 68.60 | f | |
1990 | 37.65 | u | 42.05 | i | 52.86 | i | 62.55 | a | 69.05 | 80.26 | c | 81.18 | c | 83.00 | m | 77.56 | e | 62.52 | e | 46.67 | i | 32.00 | g | 72.19 | f | |
1991 | 35.02 | g | 44.54 | 47.56 | e | 56.96 | b | 66.42 | 77.05 | b | 84.31 | d | 83.17 | b | 75.50 | d | 64.57 | a | 43.44 | f | 36.58 | f | 66.68 | c | ||
1992 | 32.73 | a | 43.84 | 52.05 | c | 65.30 | c | 71.05 | c | 76.54 | q | 82.08 | g | 82.34 | b | 73.75 | f | ----- | z | 44.40 | f | 32.71 | e | 54.29 | e | |
1993 | 39.91 | h | 41.71 | u | 52.90 | b | 59.90 | a | 69.70 | a | 76.65 | 83.29 | 80.73 | 73.62 | a | 60.48 | a | 45.41 | a | 37.67 | d | 64.03 | b | |||
1994 | 38.92 | a | 39.35 | a | 53.35 | 58.88 | 68.81 | b | 83.98 | a | 86.84 | 85.73 | a | 75.95 | 58.85 | 43.53 | 39.56 | 61.15 | ||||||||
1995 | 38.94 | 48.38 | 51.89 | 56.38 | 64.09 | b | 74.40 | 84.14 | b | 84.27 | 76.25 | 61.35 | 51.83 | a | 42.17 | a | 61.17 | |||||||||
1996 | 39.73 | 45.91 | 51.30 | a | 60.20 | 73.08 | 82.14 | a | 87.94 | 83.87 | a | 72.82 | b | 59.75 | c | 47.18 | 39.55 | b | 61.96 | |||||||
1997 | 39.30 | a | 41.77 | 52.26 | 55.52 | 72.21 | 77.26 | m | 83.83 | g | 81.21 | g | 73.75 | d | 59.19 | 48.70 | 36.43 | c | 53.24 | c | ||||||
1998 | 40.06 | 41.05 | 49.81 | b | 53.88 | 66.19 | 74.57 | a | 85.33 | a | 82.92 | 73.14 | a | 58.89 | c | 47.00 | a | 37.55 | a | 59.20 | ||||||
1999 | 41.34 | c | 43.89 | a | 54.02 | e | 52.55 | a | 65.86 | c | 77.00 | g | 82.76 | b | 79.55 | j | 72.12 | b | 62.95 | 49.92 | f | 38.43 | c | 57.10 | c | |
2000 | 42.17 | d | 44.14 | a | 48.11 | d | 62.52 | c | 72.93 | h | 82.19 | f | 85.28 | h | 82.76 | f | 74.28 | g | 61.13 | e | 41.98 | f | 39.32 | f | 51.61 | g |
2001 | 36.28 | f | 40.12 | c | 51.64 | f | 57.56 | l | 70.72 | h | 79.25 | f | 83.41 | d | 80.78 | f | 75.96 | f | 64.33 | g | 50.20 | c | 36.97 | a | 52.67 | h |
2002 | 37.93 | d | 41.35 | d | 47.71 | b | 64.83 | d | 70.35 | a | 83.45 | 89.55 | c | 86.34 | 74.00 | 59.00 | 47.32 | e | 38.24 | 61.67 | ||||||
2003 | 42.96 | d | 43.81 | a | 51.91 | b | 57.14 | a | 71.73 | a | 81.78 | g | 90.19 | 85.21 | e | 75.98 | 66.37 | a | 46.20 | b | 38.27 | c | 60.89 | a | ||
2004 | 35.86 | b | 38.15 | b | 60.14 | j | 60.07 | b | 71.57 | d | 80.46 | c | 85.17 | e | 81.59 | c | 73.20 | b | 60.77 | a | 45.93 | b | 38.12 | a | 60.99 | a |
2005 | 42.53 | b | 44.23 | b | 50.77 | 57.25 | d | 69.44 | 76.46 | b | 87.90 | a | 79.80 | a | 74.41 | b | 62.06 | e | 48.39 | b | 37.43 | c | 60.89 | |||
2006 | 38.62 | a | 43.57 | g | 47.90 | 60.27 | d | 73.79 | 83.50 | b | 87.19 | 82.81 | 71.64 | a | 58.56 | 48.17 | 37.18 | a | 62.69 | a | ||||||
2007 | 33.85 | a | 44.06 | a | 52.88 | b | 60.30 | g | 70.10 | a | 82.40 | a | 87.95 | a | 84.13 | a | 76.20 | b | 60.32 | a | 50.00 | 36.22 | b | 61.65 | a | |
2008 | 34.68 | 42.39 | a | 51.88 | c | 56.68 | h | 66.14 | c | 80.77 | 85.87 | 83.47 | 75.62 | d | 61.35 | a | 49.65 | c | 37.67 | d | 60.86 | a | ||||
2009 | 39.12 | b | 43.24 | a | 51.37 | d | 57.78 | c | 73.62 | a | 74.85 | 86.98 | a | 83.06 | d | 76.55 | 59.33 | b | ----- | z | 34.22 | d | 61.83 | a | ||
2010 | 36.21 | 40.96 | b | 48.00 | c | ----- | z | 63.82 | 81.39 | b | 87.92 | a | 81.35 | a | 76.38 | a | 61.14 | c | 44.42 | ----- | z | 62.16 | b | |||
2011 | 31.73 | r | 36.91 | q | 49.37 | p | ----- | z | ----- | z | ----- | z | 83.57 | a | ----- | z | ----- | z | 60.77 | 46.00 | ----- | z | 63.45 | i | ||
2012 | 38.73 | a | 43.43 | 47.82 | i | ----- | z | 72.24 | 83.13 | 84.44 | 83.92 | 78.29 | r | 63.19 | 48.60 | ----- | z | 64.71 | d | |||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 37.12 | 42.83 | 50.36 | 58.86 | 69.07 | 78.90 | 85.18 | 82.66 | 74.09 | 61.51 | 47.80 | 37.31 | 60.51 | |||||||||||||
S.D. | 3.66 | 2.94 | 2.77 | 3.39 | 2.81 | 2.88 | 2.11 | 1.88 | 2.06 | 2.56 | 2.11 | 3.40 | 0.96 | |||||||||||||
SKEW | -0.62 | -0.31 | 0.53 | -0.12 | -0.16 | 0.03 | 0.27 | -0.12 | -0.66 | 0.29 | -0.07 | -0.51 | -0.63 | |||||||||||||
MAX | 42.96 | 48.38 | 58.13 | 65.30 | 73.79 | 83.98 | 90.19 | 86.34 | 77.56 | 66.88 | 51.83 | 45.55 | 61.96 | |||||||||||||
MIN | 26.37 | 35.61 | 45.79 | 50.59 | 63.82 | 73.15 | 81.18 | 78.19 | 68.68 | 56.32 | 43.53 | 28.77 | 58.24 | |||||||||||||
YRS | 44 | 45 | 43 | 42 | 44 | 41 | 45 | 42 | 44 | 46 | 42 | 40 | 22 |