YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1933 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 52.23 | 46.47 | 43.45 | 39.77 | 36.84 | 43.75 | g | |||||
1934 | 37.71 | 37.19 | a | 41.39 | 45.53 | 47.48 | 49.33 | 50.45 | 52.52 | 48.87 | 44.35 | 41.30 | 37.29 | 44.45 | ||||||||||||
1935 | 33.77 | 35.86 | 34.19 | 38.30 | 42.52 | 47.83 | 50.45 | 51.00 | 48.00 | 40.77 | 35.37 | c | 37.24 | b | 41.28 | |||||||||||
1936 | 35.87 | 27.00 | 34.81 | 41.17 | 46.20 | a | 51.10 | 52.10 | 52.03 | 46.07 | 44.90 | 35.80 | 35.90 | 41.91 | ||||||||||||
1937 | 24.87 | 32.54 | 37.32 | 39.57 | 43.13 | 49.50 | 50.94 | 49.84 | 48.47 | 45.13 | 39.67 | 37.43 | a | 41.53 | ||||||||||||
1938 | 36.13 | a | 34.50 | 36.03 | 40.77 | 43.03 | 47.83 | a | 50.90 | 48.45 | 50.87 | 42.23 | 36.17 | 36.13 | 41.92 | |||||||||||
1939 | 37.10 | 32.29 | 35.90 | 39.80 | 44.13 | 48.23 | 50.13 | 51.10 | 48.43 | 43.00 | 42.33 | 39.42 | 42.65 | |||||||||||||
1940 | 36.72 | b | 37.69 | 39.77 | 42.77 | 46.45 | 47.63 | 51.90 | 52.35 | 50.70 | 46.13 | 35.10 | 37.55 | 43.73 | ||||||||||||
1941 | 36.16 | 36.48 | a | 39.74 | 41.93 | 45.39 | 49.97 | 53.77 | 51.71 | 47.07 | b | 44.13 | a | 39.29 | b | 34.97 | a | 43.38 | ||||||||
1942 | 33.74 | 36.14 | 36.29 | 40.93 | 45.74 | 49.20 | 53.74 | 51.87 | 48.27 | 44.45 | 36.07 | 36.00 | 42.70 | |||||||||||||
1943 | 28.60 | a | 35.18 | 33.90 | 41.37 | 42.16 | 47.07 | 50.13 | 50.50 | a | 48.77 | 44.03 | 39.50 | 34.74 | 41.33 | |||||||||||
1944 | 34.61 | 33.72 | 35.16 | 39.77 | 43.58 | 48.40 | 51.19 | 51.81 | 51.50 | 46.97 | a | 40.57 | 33.94 | 42.60 | ||||||||||||
1945 | 37.23 | 37.18 | 36.94 | 39.04 | b | 45.67 | a | 48.21 | a | 49.71 | 50.20 | a | 46.67 | 44.06 | 36.33 | 35.68 | 42.24 | |||||||||
1946 | 36.87 | 35.39 | 36.35 | 40.17 | 45.06 | 49.03 | 51.94 | 50.71 | 48.20 | 41.10 | 35.33 | 34.87 | 42.09 | |||||||||||||
1947 | 31.19 | 36.82 | 38.77 | 41.40 | 46.06 | 50.40 | 51.94 | 50.68 | 48.27 | 43.42 | 38.47 | 37.68 | 42.92 | |||||||||||||
1948 | 34.74 | 33.55 | 35.10 | 38.40 | 44.81 | 51.67 | 51.58 | 51.65 | 47.83 | 42.32 | 37.73 | 31.29 | 41.72 | |||||||||||||
1949 | 27.48 | 31.43 | 37.74 | 40.27 | 45.19 | 46.40 | 49.83 | a | 51.87 | 49.20 | 40.90 | 42.80 | 33.42 | 41.38 | ||||||||||||
1950 | 21.35 | 33.57 | 36.00 | 37.57 | 41.39 | 48.83 | 50.10 | 50.23 | a | 46.87 | 42.00 | 37.33 | 38.97 | 40.35 | ||||||||||||
1951 | 32.45 | 33.64 | 32.84 | 39.43 | 42.06 | 47.60 | 50.77 | 47.50 | a | ----- | z | 43.27 | a | 38.30 | 32.74 | 40.06 | a | |||||||||
1952 | 31.71 | 33.55 | 35.48 | 39.10 | 43.00 | 45.13 | 49.68 | 50.39 | 48.40 | 45.87 | 36.47 | 35.97 | 41.23 | |||||||||||||
1953 | 35.57 | a | 35.86 | 36.57 | a | 39.83 | 44.97 | 47.59 | a | 51.29 | 51.94 | 49.70 | 45.70 | a | 41.76 | a | 38.40 | a | 43.26 | |||||||
1954 | 31.00 | 37.48 | a | 32.50 | a | 37.97 | 44.10 | a | 46.53 | 49.16 | 50.77 | 50.57 | 42.74 | 42.77 | 36.17 | a | 41.81 | |||||||||
1955 | 36.13 | 33.57 | 32.97 | 36.57 | 42.06 | 48.03 | a | 50.13 | a | 48.81 | 48.20 | 42.67 | a | 32.25 | b | 33.55 | 40.41 | |||||||||
1956 | 33.30 | a | 31.69 | 34.77 | a | 40.33 | 45.06 | 48.33 | 51.74 | 50.81 | 48.17 | a | 42.58 | 36.83 | 35.10 | b | 41.56 | |||||||||
1957 | 28.48 | 32.57 | 37.00 | 40.60 | 47.29 | 49.87 | 51.19 | 51.65 | 52.60 | 43.42 | 38.13 | 37.06 | 42.49 | |||||||||||||
1958 | 37.67 | a | 40.96 | a | 36.84 | 39.66 | a | 47.68 | 53.87 | 54.19 | 52.97 | a | 50.00 | 43.57 | a | 37.10 | a | 38.58 | 44.42 | |||||||
1959 | 34.74 | 35.43 | 37.48 | 40.66 | a | 43.13 | 49.63 | 51.45 | 49.81 | 48.33 | 43.32 | 34.90 | a | 35.26 | 42.01 | |||||||||||
1960 | 33.65 | 35.21 | 35.19 | 39.13 | 43.74 | 47.63 | 50.97 | 52.06 | 47.07 | a | 45.26 | 37.77 | 34.57 | a | 41.85 | |||||||||||
1961 | 36.71 | 38.39 | 37.81 | 41.00 | 45.17 | b | 51.07 | 53.03 | 51.42 | 44.40 | 39.13 | 32.37 | 32.81 | 41.94 | ||||||||||||
1962 | 31.94 | 36.29 | 33.94 | 40.80 | 43.03 | 46.10 | 48.48 | 51.13 | 47.97 | 43.55 | 39.00 | 36.55 | 41.56 | |||||||||||||
1963 | 31.23 | 38.68 | 36.13 | 41.10 | 44.45 | 48.13 | 50.35 | 51.16 | 50.97 | 45.74 | 38.13 | 37.13 | 42.77 | |||||||||||||
1964 | 36.06 | 34.48 | 37.55 | 37.90 | 41.71 | 48.30 | 49.68 | 49.94 | 45.33 | 39.71 | 32.87 | 28.58 | 40.18 | |||||||||||||
1965 | 31.48 | 36.21 | 35.97 | 40.14 | a | 42.00 | a | 45.60 | 49.58 | 50.00 | 44.70 | 44.61 | 40.47 | 34.16 | 41.24 | |||||||||||
1966 | 33.16 | 34.43 | 35.81 | 39.24 | a | 42.52 | 47.80 | 50.16 | 49.68 | 48.83 | 40.35 | 36.63 | 36.10 | 41.23 | ||||||||||||
1967 | 34.26 | 36.75 | 35.52 | 37.63 | 44.55 | 50.40 | 51.58 | 50.71 | 48.90 | 45.23 | 39.77 | 35.90 | 42.60 | |||||||||||||
1968 | 34.74 | 35.86 | 39.42 | 39.20 | 44.77 | 48.37 | 51.97 | 51.32 | 48.57 | 42.45 | 38.14 | a | 31.03 | 42.15 | ||||||||||||
1969 | 26.23 | 32.39 | 36.06 | 39.70 | 45.71 | 52.03 | 52.55 | 52.00 | 49.67 | 42.06 | 39.17 | f | 37.52 | 42.36 | a | |||||||||||
1970 | 34.29 | 37.29 | 36.45 | 38.20 | 43.19 | d | 48.80 | 49.16 | 48.87 | 45.30 | 40.47 | a | 37.83 | 33.68 | 41.13 | |||||||||||
1971 | 35.32 | 35.75 | 33.10 | 39.07 | 43.00 | 46.73 | 50.16 | 53.65 | 47.10 | 43.19 | 39.60 | 32.19 | 41.57 | |||||||||||||
1972 | 30.90 | 34.24 | 38.58 | 36.83 | 45.81 | 48.33 | 51.90 | 51.97 | 46.07 | 41.61 | 38.67 | 32.94 | 41.49 | |||||||||||||
1973 | 31.39 | 35.21 | 37.52 | 38.57 | 44.23 | 47.43 | 50.32 | 48.71 | 49.43 | 43.32 | 35.73 | 38.45 | 41.69 | |||||||||||||
1974 | 33.10 | 35.82 | 36.58 | 40.77 | 42.16 | 46.40 | 49.94 | 51.16 | 50.03 | 42.32 | 39.70 | 37.61 | 42.13 | |||||||||||||
1975 | 34.39 | 33.32 | 35.39 | 36.17 | 44.00 | 47.87 | 51.45 | 51.39 | 48.90 | 43.48 | 38.53 | 35.48 | 41.70 | |||||||||||||
1976 | 36.13 | 34.48 | 35.16 | 39.73 | 43.06 | 45.53 | 50.55 | 50.61 | 49.20 | 42.77 | 38.47 | 37.26 | 41.91 | |||||||||||||
1977 | 33.61 | 38.36 | 36.06 | 40.30 | 43.81 | 48.33 | 49.74 | 52.10 | 47.33 | 41.29 | 35.77 | 34.16 | 41.74 | |||||||||||||
1978 | 36.87 | 37.61 | 38.84 | 40.57 | 43.65 | 51.10 | 51.90 | 53.39 | 49.90 | a | 44.19 | 34.93 | 32.29 | 42.94 | ||||||||||||
1979 | 29.16 | 33.86 | 37.61 | 41.00 | 45.39 | 47.97 | 52.26 | 52.81 | 51.67 | 44.52 | 36.97 | 38.35 | 42.63 | |||||||||||||
1980 | 30.06 | 37.31 | 37.68 | ----- | z | 45.61 | 49.10 | 51.19 | 50.48 | 50.17 | 44.55 | 40.73 | 39.47 | a | 43.31 | a | ||||||||||
1981 | 39.19 | 38.36 | 39.94 | 40.80 | ----- | z | 48.67 | 51.07 | a | 54.00 | 48.47 | 41.87 | 39.33 | 36.37 | a | 43.46 | a | |||||||||
1982 | ----- | z | 35.21 | 36.20 | a | 36.87 | 43.84 | 49.67 | 51.84 | 51.84 | 50.47 | 44.23 | 35.90 | 35.32 | 42.85 | a | ||||||||||
1983 | 38.94 | 38.86 | 40.06 | 40.47 | 46.93 | b | 50.17 | a | 52.61 | 53.68 | 48.20 | 42.42 | 41.40 | 30.03 | 43.65 | |||||||||||
1984 | 36.86 | c | 38.34 | 40.61 | 41.27 | 44.65 | 49.37 | 51.87 | 52.52 | 48.47 | 42.32 | 38.07 | 31.74 | 43.01 | ||||||||||||
1985 | 34.16 | 33.46 | 35.19 | 37.63 | 42.68 | 45.03 | 48.26 | 47.39 | 43.73 | 40.45 | 26.86 | a | 28.84 | 38.64 | ||||||||||||
1986 | 34.84 | 31.39 | 36.20 | a | 36.13 | 41.19 | 46.30 | 46.90 | 49.55 | b | 44.77 | 39.90 | 36.03 | 31.71 | 39.58 | |||||||||||
1987 | 31.97 | a | 34.29 | 34.74 | 37.60 | 41.84 | 43.70 | 48.52 | 46.97 | 45.33 | 38.23 | 37.77 | 31.03 | 39.33 | ||||||||||||
1988 | 28.87 | 32.10 | 32.42 | 37.00 | 42.58 | 48.83 | 50.45 | 51.06 | 47.57 | 46.00 | 38.90 | 36.77 | 41.05 | |||||||||||||
1989 | 33.81 | 27.61 | 35.26 | 41.47 | 45.52 | 49.90 | 51.16 | 51.06 | 48.97 | 43.74 | 40.90 | 38.94 | 42.36 | |||||||||||||
1990 | 36.81 | 32.86 | 37.10 | 43.10 | 46.16 | 50.73 | 53.61 | 54.19 | 51.73 | 42.65 | 40.27 | 30.81 | 43.33 | |||||||||||||
1991 | 33.61 | 39.00 | 36.14 | c | 39.70 | 45.65 | 48.60 | 51.65 | 52.32 | 50.43 | 42.32 | 39.47 | 38.74 | 43.14 | ||||||||||||
1992 | 37.32 | 38.93 | 40.35 | 42.53 | 46.47 | a | 51.53 | 53.94 | 52.42 | 47.53 | 45.39 | 38.80 | 33.68 | 44.07 | ||||||||||||
1993 | 28.61 | 31.93 | 37.97 | 42.40 | 49.45 | 51.23 | 52.42 | 53.03 | 47.47 | 45.81 | 34.33 | 36.97 | b | 42.63 | ||||||||||||
1994 | 38.73 | a | 34.46 | 38.06 | 43.33 | 46.97 | 48.86 | a | 52.67 | a | 53.26 | 50.73 | 42.39 | 35.97 | 34.35 | 43.32 | ||||||||||
1995 | 36.29 | 37.43 | 36.94 | 40.93 | b | 46.90 | 50.57 | 53.55 | 51.03 | 51.37 | 44.35 | 40.73 | 35.00 | 43.76 | ||||||||||||
1996 | 33.29 | 32.93 | 37.62 | b | 42.43 | 42.84 | 48.47 | 52.20 | a | 52.45 | 48.33 | 42.77 | 36.63 | 31.74 | 41.81 | |||||||||||
1997 | 34.10 | a | 36.50 | 37.13 | 39.73 | 47.63 | a | 50.50 | 54.48 | 54.97 | ----- | z | 46.13 | ----- | z | ----- | z | 44.58 | c | |||||||
1998 | 36.67 | g | 38.93 | 39.77 | 40.47 | 47.50 | a | 51.13 | 54.68 | 53.55 | 49.70 | 44.71 | 40.87 | 35.23 | a | 45.14 | a | |||||||||
1999 | 35.94 | 36.11 | 35.94 | 39.00 | a | 42.65 | 51.47 | 56.48 | 56.60 | a | 52.03 | 47.94 | 46.57 | 41.87 | a | 45.21 | ||||||||||
2000 | 39.45 | b | 39.48 | 42.74 | 45.87 | 48.90 | 54.03 | 57.00 | 53.97 | 52.13 | ----- | z | 39.03 | 37.81 | 46.40 | a | ||||||||||
2001 | 39.19 | 35.96 | 38.77 | 42.03 | 46.77 | 50.63 | 53.48 | ----- | z | 51.37 | 44.48 | 41.17 | 36.71 | 43.69 | a | |||||||||||
2002 | 38.42 | 37.93 | 37.90 | 47.70 | 52.16 | 52.90 | 54.65 | 52.26 | 50.20 | 43.23 | 41.17 | a | 38.32 | 45.57 | ||||||||||||
2003 | 40.06 | 36.33 | a | 40.40 | a | 41.83 | 46.03 | 52.27 | 54.48 | 53.84 | 50.97 | 47.39 | 36.47 | 36.03 | 44.68 | |||||||||||
2004 | 37.03 | 37.97 | 39.68 | 42.97 | ----- | z | 51.90 | 56.39 | 56.48 | 50.13 | 45.94 | 40.20 | 39.58 | 45.30 | a | |||||||||||
2005 | 37.52 | 34.68 | 40.48 | 42.40 | 50.73 | a | ----- | z | 54.68 | 53.39 | 49.47 | 45.84 | 39.88 | e | ----- | z | 44.91 | b | ||||||||
2006 | 38.97 | 35.93 | 37.10 | 42.33 | 47.77 | 52.97 | 55.19 | 52.52 | 50.87 | 44.23 | 38.43 | 36.74 | 44.42 | |||||||||||||
2007 | 35.10 | 38.57 | 41.27 | a | 42.13 | 46.68 | 50.88 | e | ----- | z | ----- | z | ----- | z | 43.94 | 38.80 | 36.52 | 41.54 | c | |||||||
2008 | 34.06 | 37.69 | 36.23 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 35.99 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 34.15 | 35.42 | 36.94 | 40.27 | 44.85 | 49.05 | 51.67 | 51.57 | 48.73 | 43.45 | 38.13 | 35.47 | 42.25 | |||||||||||||
S.D. | 3.63 | 2.60 | 2.21 | 2.17 | 2.23 | 2.12 | 2.00 | 1.83 | 2.00 | 1.95 | 2.88 | 2.72 | 1.35 | |||||||||||||
SKEW | -0.98 | -0.65 | 0.25 | 0.61 | 0.72 | 0.07 | 0.50 | 0.05 | -0.36 | -0.22 | -0.62 | -0.45 | 0.05 | |||||||||||||
MAX | 40.06 | 40.96 | 42.74 | 47.70 | 52.16 | 54.03 | 57.00 | 56.60 | 52.60 | 47.94 | 46.57 | 41.87 | 45.57 | |||||||||||||
MIN | 21.35 | 27.00 | 32.42 | 36.13 | 41.19 | 43.70 | 46.90 | 46.97 | 43.73 | 38.23 | 26.86 | 28.58 | 38.64 | |||||||||||||
YRS | 73 | 75 | 75 | 73 | 72 | 73 | 73 | 73 | 72 | 74 | 73 | 73 | 62 |