YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1972 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 39.16 | f | 40.03 | 29.10 | 34.57 | j | ||
1973 | 31.50 | a | 35.75 | 36.93 | c | 37.27 | 43.26 | 48.00 | 52.84 | 47.94 | 49.93 | 42.71 | ----- | z | 38.77 | 42.26 | a | |||||||||
1974 | 29.83 | a | 35.11 | 36.03 | 40.55 | a | 42.59 | b | 49.10 | a | 52.32 | 51.83 | a | 50.27 | 38.61 | 37.77 | 36.90 | a | 41.74 | |||||||
1975 | 34.84 | 33.07 | 35.61 | 35.33 | 43.61 | 47.90 | a | 53.42 | 50.34 | b | 48.53 | 44.97 | 36.70 | 35.55 | 41.66 | |||||||||||
1976 | 34.23 | 32.66 | 33.97 | 37.90 | 43.55 | 46.04 | b | 52.10 | 52.87 | a | 50.77 | 40.35 | 36.50 | 32.10 | 41.08 | |||||||||||
1977 | 26.71 | 33.43 | 34.30 | a | 39.21 | a | 42.39 | 48.31 | a | 50.97 | 55.71 | 48.76 | a | 41.23 | a | 35.93 | 37.87 | 41.23 | ||||||||
1978 | 37.10 | 38.85 | a | 37.71 | 40.60 | 43.19 | 51.86 | a | 53.68 | 53.90 | 49.48 | a | 40.55 | 29.97 | 28.32 | 42.10 | ||||||||||
1979 | 24.43 | a | 34.57 | 38.87 | 40.83 | 45.53 | a | 48.70 | 53.13 | 52.87 | 52.14 | a | 46.03 | a | 36.60 | 37.90 | a | 42.63 | ||||||||
1980 | 28.81 | 35.86 | a | 36.73 | a | 41.57 | 43.90 | b | 48.77 | 51.77 | 49.06 | 47.21 | a | 40.52 | 39.53 | 34.83 | a | 41.55 | ||||||||
1981 | 34.90 | 33.70 | a | 36.81 | 40.63 | 45.07 | a | 48.86 | a | 52.13 | 53.71 | 47.53 | 38.97 | a | 36.31 | a | 34.70 | a | 41.94 | |||||||
1982 | 31.73 | a | 33.00 | a | 33.85 | d | 36.50 | 42.30 | a | 51.40 | 51.93 | b | 52.57 | a | 46.90 | a | 39.67 | a | 32.61 | b | 32.07 | b | 40.38 | |||
1983 | 33.48 | b | 40.08 | b | 41.10 | 39.73 | 46.17 | a | 49.43 | 53.10 | a | 53.87 | a | 45.50 | 39.77 | a | 40.75 | b | 30.23 | 42.77 | ||||||
1984 | 35.35 | 35.59 | 39.43 | a | 40.10 | 43.61 | 47.57 | 51.23 | a | 51.63 | a | 48.73 | 41.97 | a | 37.55 | a | 31.03 | a | 41.98 | |||||||
1985 | 26.86 | b | 30.81 | a | 33.45 | b | 40.96 | c | ----- | z | ----- | z | 55.55 | 51.97 | b | 47.28 | a | 40.96 | f | 30.54 | b | 26.80 | a | 38.25 | c | |
1986 | 36.83 | b | 35.44 | c | 40.90 | b | 39.27 | 45.27 | a | 52.68 | b | 52.10 | a | 54.87 | 48.59 | a | 44.90 | 40.54 | b | 34.76 | b | 43.84 | ||||
1987 | 33.48 | 37.39 | 38.63 | a | 42.29 | b | 47.40 | a | 51.10 | 54.10 | a | 53.86 | b | 50.52 | a | 43.61 | 39.60 | 33.54 | c | 43.79 | ||||||
1988 | 32.77 | a | 35.66 | 36.23 | a | 40.83 | a | 43.69 | e | 49.59 | a | 53.13 | a | 52.42 | 47.72 | a | 48.45 | 40.21 | b | 33.40 | a | 42.84 | ||||
1989 | 35.43 | a | 27.93 | a | 37.70 | a | 43.71 | b | 46.13 | 52.43 | 53.03 | a | 52.58 | 49.13 | 43.89 | c | 39.43 | b | 34.28 | b | 42.97 | |||||
1990 | 36.62 | b | 34.92 | b | 39.48 | b | 43.18 | b | 45.45 | 52.25 | b | 56.10 | b | 55.50 | e | 53.38 | d | 41.65 | e | 38.92 | f | 27.17 | b | 44.16 | a | |
1991 | 32.48 | b | 37.59 | a | 35.06 | ----- | z | 43.63 | a | 48.10 | 53.67 | a | 54.40 | a | 51.71 | f | 41.80 | a | 40.14 | a | 36.13 | a | 42.30 | b | ||
1992 | ----- | z | 39.83 | 39.48 | 43.20 | 47.13 | 52.87 | 56.80 | a | 54.07 | b | 48.07 | b | 45.60 | a | 39.50 | 33.50 | a | 45.46 | a | ||||||
1993 | 31.39 | 32.35 | b | 40.52 | b | 42.52 | c | 49.83 | b | 51.07 | b | 52.71 | 55.65 | 48.93 | 45.93 | d | 30.75 | b | 34.14 | b | 42.98 | |||||
1994 | 37.63 | a | 32.75 | 39.27 | a | 42.37 | 48.07 | a | 49.66 | a | 54.03 | 53.63 | a | 52.90 | a | 39.90 | a | 33.67 | 36.03 | b | 43.33 | |||||
1995 | 38.58 | 36.74 | a | 37.60 | a | 39.13 | 47.62 | b | 51.26 | c | 56.71 | c | 52.60 | a | 54.67 | 44.10 | 44.62 | a | 37.35 | 45.08 | ||||||
1996 | 35.97 | 33.64 | a | 37.68 | 42.93 | 44.45 | 50.07 | 56.87 | 54.36 | c | 48.23 | 43.43 | c | 38.04 | c | 34.86 | c | 43.38 | ||||||||
1997 | 35.38 | e | 35.50 | d | 36.57 | a | 38.96 | c | 50.40 | a | 50.44 | c | 54.63 | a | ----- | z | ----- | z | ----- | z | 42.60 | e | 34.93 | d | 42.16 | c |
1998 | 38.25 | c | 38.63 | a | 39.97 | b | 40.65 | d | 48.11 | c | 51.74 | c | 58.66 | b | 55.32 | 52.26 | c | 44.73 | e | 42.71 | b | 33.68 | c | 45.39 | ||
1999 | 35.41 | b | 37.35 | b | 36.70 | a | 38.64 | b | 42.86 | c | 50.67 | c | 52.85 | d | 57.00 | a | 47.81 | d | 43.34 | b | 42.77 | 38.21 | b | 43.63 | ||
2000 | 33.96 | f | 36.73 | c | 34.81 | 41.69 | d | 46.44 | d | 51.76 | a | 53.66 | b | 52.79 | c | 50.84 | e | 44.67 | a | 35.25 | b | 35.23 | a | 43.99 | a | |
2001 | 34.25 | c | 32.08 | c | 37.45 | b | 37.82 | b | 43.00 | f | 45.56 | c | 52.45 | b | 52.65 | e | 48.96 | c | 41.79 | c | 42.32 | b | 36.38 | b | 41.97 | a |
2002 | 34.50 | g | 34.92 | b | 35.54 | c | 40.63 | 42.18 | c | 49.69 | a | 52.88 | e | 51.33 | a | 47.86 | i | 40.97 | 38.70 | c | 36.53 | a | 42.34 | b | ||
2003 | 39.11 | c | 35.48 | a | 39.63 | d | 39.73 | h | 44.84 | f | 50.72 | e | ----- | z | 53.24 | j | 49.00 | i | 48.05 | j | 35.14 | h | 36.21 | l | 41.23 | h |
2004 | 30.85 | k | 37.13 | f | 40.17 | g | 41.44 | e | 47.62 | g | 52.48 | i | 54.95 | l | 55.78 | m | ----- | z | 45.84 | l | ----- | z | 35.22 | h | 41.44 | k |
2005 | 33.30 | h | 32.59 | f | 37.58 | e | 41.79 | f | 47.38 | g | 50.00 | a | 55.00 | b | 53.00 | c | 45.15 | c | 45.67 | d | 34.15 | d | 32.79 | g | 45.79 | e |
2006 | 38.20 | a | 31.09 | f | 35.31 | e | 40.16 | e | 44.48 | b | 51.93 | b | 54.25 | c | 51.09 | i | 49.25 | b | 42.77 | a | 40.63 | c | 34.19 | 43.12 | b | |
2007 | 31.13 | a | 37.54 | 40.43 | j | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 34.33 | j | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 33.76 | 35.15 | 37.30 | 40.34 | 45.11 | 49.98 | 53.68 | 53.14 | 49.29 | 42.75 | 37.95 | 34.08 | 42.68 | |||||||||||||
S.D. | 3.73 | 2.65 | 2.13 | 2.03 | 2.27 | 1.88 | 1.81 | 1.94 | 2.24 | 2.45 | 3.78 | 3.13 | 1.27 | |||||||||||||
SKEW | -0.75 | -0.35 | -0.00 | -0.49 | 0.68 | -0.47 | 0.95 | -0.58 | 0.50 | 0.21 | -0.51 | -0.79 | 0.36 | |||||||||||||
MAX | 39.11 | 40.08 | 41.10 | 43.71 | 50.40 | 52.87 | 58.66 | 57.00 | 54.67 | 48.45 | 44.62 | 38.77 | 45.39 | |||||||||||||
MIN | 24.43 | 27.93 | 33.45 | 35.33 | 42.18 | 45.56 | 50.97 | 47.94 | 45.15 | 38.61 | 29.97 | 26.80 | 40.38 | |||||||||||||
YRS | 30 | 32 | 33 | 31 | 29 | 32 | 32 | 30 | 29 | 30 | 31 | 32 | 21 |