YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1961 | ----- | z | ----- | z | ----- | z | ----- | z | 43.38 | g | 49.14 | a | 50.35 | 52.97 | 41.40 | 38.87 | 31.48 | a | 32.19 | 42.34 | e | |||||
1962 | 28.35 | 32.13 | e | 34.67 | a | 36.93 | 41.29 | ----- | z | ----- | z | ----- | z | 48.00 | k | 40.39 | 37.60 | 33.13 | a | 35.56 | d | |||||
1963 | 25.16 | 38.30 | a | 34.17 | a | 37.07 | 41.55 | 45.20 | 47.68 | 49.10 | 49.53 | 43.06 | 38.10 | a | 31.30 | a | 40.02 | |||||||||
1964 | 33.45 | b | 30.45 | 33.45 | 35.53 | 38.39 | 45.46 | b | 48.48 | 47.90 | 44.14 | a | 41.32 | 33.20 | 32.29 | 38.67 | ||||||||||
1965 | 32.84 | 34.11 | 33.55 | 39.03 | 37.77 | 43.63 | 47.77 | 51.48 | 44.63 | 41.61 | 39.80 | 30.48 | 39.73 | |||||||||||||
1966 | 32.77 | 32.25 | 34.81 | 37.20 | 38.97 | 45.00 | 47.77 | 48.00 | 47.93 | 39.61 | 38.20 | 37.39 | 39.99 | |||||||||||||
1967 | 35.97 | 31.57 | 32.16 | 32.87 | 39.45 | 47.83 | 47.48 | 49.87 | 47.20 | 40.52 | 37.20 | 34.00 | 39.68 | |||||||||||||
1968 | 32.03 | 37.59 | 36.35 | 34.83 | 40.45 | 45.90 | 48.39 | 49.10 | 45.67 | 39.26 | 36.53 | 30.90 | 39.75 | |||||||||||||
1969 | 26.61 | 30.71 | 32.32 | 36.67 | 43.58 | 52.03 | 47.10 | 45.87 | 46.43 | 38.90 | 35.60 | 34.26 | 39.17 | |||||||||||||
1970 | 34.32 | 34.14 | 34.03 | 34.53 | 39.26 | 47.17 | 46.84 | 45.35 | 42.55 | a | 37.61 | 36.63 | 31.71 | 38.68 | ||||||||||||
1971 | 32.00 | 31.79 | 31.74 | 34.87 | 40.26 | 43.47 | 49.06 | 50.29 | 44.00 | 37.06 | 35.13 | 31.10 | 38.40 | |||||||||||||
1972 | 30.29 | 33.28 | 37.10 | 34.20 | 42.58 | 45.67 | 49.23 | 49.03 | 43.17 | 38.68 | 36.83 | 27.35 | 38.95 | |||||||||||||
1973 | 29.23 | 33.43 | 33.55 | 36.13 | 40.77 | 45.97 | 46.97 | 44.06 | 46.90 | 39.97 | 35.00 | 36.74 | 39.06 | |||||||||||||
1974 | 28.13 | 32.68 | 34.48 | 37.30 | 39.74 | 45.50 | 49.74 | 48.42 | 47.63 | 38.48 | 37.20 | 35.42 | 39.56 | |||||||||||||
1975 | 35.00 | 32.36 | 32.87 | 33.97 | 40.06 | 43.77 | 49.61 | 47.71 | 44.73 | 41.26 | 33.93 | 35.19 | 39.21 | |||||||||||||
1976 | 32.77 | 31.62 | 32.74 | 35.10 | 39.90 | 42.63 | 47.13 | 49.45 | 47.00 | 39.13 | 37.10 | 30.52 | 38.76 | |||||||||||||
1977 | 27.16 | 33.64 | 32.42 | 36.77 | 39.10 | 45.10 | 46.42 | 51.97 | 46.10 | 40.39 | 34.37 | 36.35 | 39.15 | |||||||||||||
1978 | 35.13 | a | 37.14 | 37.03 | 38.23 | 39.35 | 48.10 | 49.68 | 49.39 | 47.83 | 40.35 | 29.73 | 26.61 | 39.88 | ||||||||||||
1979 | 22.68 | 34.00 | a | 36.06 | 39.23 | 42.32 | ----- | z | 48.94 | 49.29 | 48.80 | 44.42 | 33.50 | 36.00 | 39.57 | a | ||||||||||
1980 | 28.10 | 34.21 | 34.77 | 38.07 | 40.42 | 44.07 | 48.30 | a | 44.74 | 44.53 | 39.13 | 38.70 | 34.74 | 39.15 | ||||||||||||
1981 | 33.19 | 33.11 | 34.74 | 38.73 | 41.00 | 45.90 | 48.81 | 51.19 | 45.60 | 40.06 | 36.93 | 35.52 | 40.40 | |||||||||||||
1982 | 29.84 | 32.64 | 33.32 | 33.70 | 39.87 | 48.07 | 48.23 | 48.97 | 47.77 | 41.70 | a | 32.77 | 32.48 | 39.11 | ||||||||||||
1983 | 35.13 | 38.36 | 39.06 | 37.03 | 42.06 | 46.87 | 50.48 | 50.13 | 44.00 | 39.07 | a | 39.93 | 28.69 | b | 40.90 | |||||||||||
1984 | 33.13 | 34.43 | a | 38.28 | b | 36.83 | 41.13 | 43.93 | 47.03 | a | 47.37 | a | 45.90 | 39.55 | 37.07 | a | 29.39 | 39.50 | ||||||||
1985 | 26.84 | 29.54 | 31.41 | b | 38.25 | b | 40.70 | a | 45.26 | c | 49.81 | 47.52 | 43.18 | b | 39.28 | b | 28.73 | 25.30 | a | 37.15 | ||||||
1986 | 34.35 | 35.52 | a | 38.27 | a | 36.37 | 41.81 | 49.33 | 47.70 | a | 50.00 | 44.50 | 41.32 | 37.93 | 31.53 | a | 40.72 | |||||||||
1987 | 31.74 | 34.82 | 36.10 | a | 37.52 | a | 42.80 | a | 47.07 | 49.68 | 48.23 | a | 45.67 | 41.67 | a | 37.17 | a | 31.71 | 40.35 | |||||||
1988 | 30.58 | 32.52 | 34.00 | 39.00 | 41.42 | 45.97 | 48.97 | a | 47.67 | a | 44.70 | 45.16 | 37.21 | a | 31.52 | 39.89 | ||||||||||
1989 | 32.68 | 26.14 | 35.65 | 41.36 | b | 42.26 | 47.45 | a | 49.26 | 49.29 | 46.77 | 40.13 | 36.00 | 31.42 | 39.87 | |||||||||||
1990 | 33.10 | b | 30.04 | 34.87 | 39.83 | 41.00 | 47.90 | 51.52 | 51.45 | 49.67 | 38.45 | 35.97 | 25.23 | 39.92 | ||||||||||||
1991 | 29.55 | 37.68 | 32.97 | 37.20 | 41.03 | 45.00 | 49.87 | 50.39 | 46.79 | a | 39.63 | a | 37.34 | a | 33.50 | a | 40.08 | |||||||||
1992 | 35.03 | 39.38 | 39.32 | 43.03 | 43.67 | a | 47.40 | 50.97 | 49.27 | a | 45.80 | 43.06 | 44.14 | b | 36.26 | 43.11 | ||||||||||
1993 | 29.93 | b | 32.21 | 40.00 | a | 40.28 | a | 46.65 | 48.33 | 48.61 | c | 49.66 | b | 44.44 | c | 42.03 | 28.78 | c | 31.74 | 40.22 | ||||||
1994 | 34.61 | c | 31.48 | a | 37.03 | a | 39.04 | c | 45.65 | 47.00 | c | 50.71 | 52.43 | c | 50.48 | a | 39.93 | a | 33.45 | a | 33.66 | b | 41.29 | |||
1995 | 35.48 | b | 36.96 | 36.53 | a | 38.72 | a | 44.03 | a | 49.67 | 54.64 | c | 51.62 | b | 52.87 | 43.07 | b | 44.15 | c | 35.34 | b | 43.59 | ||||
1996 | 33.93 | a | 32.36 | a | 35.74 | d | 40.41 | a | 41.40 | a | 45.58 | f | 53.46 | g | 51.57 | a | 46.10 | 41.20 | a | 35.52 | a | 34.69 | b | 39.29 | b | |
1997 | 34.21 | b | 32.92 | b | 36.23 | a | 38.03 | a | 46.03 | a | 47.44 | e | 50.62 | j | 52.62 | b | 50.83 | 43.83 | a | 41.33 | c | 32.10 | j | 42.35 | b | |
1998 | 37.26 | h | 37.42 | b | 38.79 | b | 38.55 | a | 45.79 | b | 48.17 | f | 54.73 | e | 51.55 | b | 49.19 | c | 42.39 | c | 41.26 | g | 33.84 | f | 44.80 | d |
1999 | 36.58 | 34.63 | i | 37.25 | c | 38.30 | g | 41.74 | d | 50.30 | g | 51.94 | n | 56.11 | d | 46.72 | a | 40.50 | i | 41.71 | f | 35.86 | c | 42.38 | f | |
2000 | 33.65 | h | 36.88 | e | 35.08 | f | 41.20 | e | 46.64 | f | 49.35 | g | 51.92 | e | 50.77 | i | 47.96 | e | 41.96 | e | 30.50 | h | 33.18 | i | 43.98 | g |
2001 | 32.29 | g | 30.14 | g | 36.36 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 31.67 | 33.68 | 35.21 | 37.46 | 41.45 | 46.42 | 49.16 | 49.50 | 46.39 | 40.60 | 36.22 | 32.47 | 39.81 | |||||||||||||
S.D. | 3.34 | 2.84 | 2.28 | 2.29 | 2.13 | 2.04 | 1.93 | 2.39 | 2.43 | 1.86 | 3.45 | 3.14 | 1.23 | |||||||||||||
SKEW | -0.74 | 0.02 | 0.32 | 0.12 | 0.79 | 0.44 | 1.20 | 0.04 | 0.42 | 0.49 | -0.05 | -0.61 | 1.20 | |||||||||||||
MAX | 36.58 | 39.38 | 40.00 | 43.03 | 46.65 | 52.03 | 54.73 | 56.11 | 52.87 | 45.16 | 44.15 | 37.39 | 43.59 | |||||||||||||
MIN | 22.68 | 26.14 | 31.41 | 32.87 | 37.77 | 42.63 | 46.42 | 44.06 | 41.40 | 37.06 | 28.73 | 25.23 | 37.15 | |||||||||||||
YRS | 37 | 38 | 38 | 38 | 38 | 34 | 36 | 38 | 39 | 39 | 37 | 37 | 32 |