YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1936 | ----- | z | ----- | z | ----- | z | 46.91 | s | 45.81 | 50.56 | e | 49.77 | 48.74 | 44.47 | 39.68 | 33.87 | 37.29 | 43.77 | d | |||||||
1937 | 25.06 | 34.30 | a | 40.74 | 39.07 | 44.11 | c | 51.12 | f | 50.84 | 49.06 | 49.43 | 48.23 | a | 44.63 | 39.77 | 42.30 | a | ||||||||
1938 | 36.35 | 36.86 | 38.19 | 42.10 | 42.06 | 46.87 | 49.97 | 46.10 | 49.66 | a | 45.45 | 36.70 | 36.65 | 42.25 | ||||||||||||
1939 | 36.32 | 35.32 | 38.55 | 39.67 | 43.48 | 47.20 | 50.81 | 48.97 | 48.43 | 47.19 | 42.00 | 41.20 | a | 43.26 | ||||||||||||
1940 | 35.90 | 41.86 | 41.71 | 42.87 | 45.29 | 47.30 | 50.77 | 50.13 | 53.00 | 49.06 | 39.30 | 36.19 | 44.45 | |||||||||||||
1941 | 38.32 | 38.93 | 39.00 | 40.90 | 45.68 | 48.17 | 52.68 | 52.00 | 48.07 | 45.48 | 42.45 | a | 37.83 | a | 44.13 | |||||||||||
1942 | 35.00 | 36.54 | 36.94 | 40.97 | 45.52 | 47.03 | 53.52 | 51.58 | 43.31 | a | 43.87 | 40.93 | 39.40 | a | 42.88 | |||||||||||
1943 | 31.35 | 36.11 | 37.17 | a | 42.43 | 40.71 | 47.47 | 48.87 | 48.97 | 46.17 | a | 45.94 | 40.40 | 34.65 | e | 41.69 | ||||||||||
1944 | 35.19 | 36.48 | 36.52 | 41.23 | 42.71 | 48.40 | 51.65 | 50.13 | 48.40 | 48.16 | 39.36 | b | 35.77 | 42.83 | ||||||||||||
1945 | 37.32 | 39.11 | 38.13 | 40.14 | a | 47.45 | 45.37 | 48.33 | a | 50.06 | 46.23 | 42.68 | 41.20 | 39.19 | 42.93 | |||||||||||
1946 | 36.29 | 36.82 | ----- | z | 38.80 | 44.17 | a | ----- | z | ----- | z | ----- | z | 42.62 | n | 41.71 | 37.87 | 37.00 | 38.95 | e | ||||||
1947 | 32.26 | 38.79 | 39.68 | 41.67 | 44.55 | 48.20 | 50.57 | a | ----- | z | 45.03 | 48.48 | 41.67 | 37.13 | 42.55 | a | ||||||||||
1948 | 36.12 | o | 39.44 | m | 37.58 | 39.50 | 45.32 | 52.53 | 51.06 | 52.74 | 47.03 | 44.00 | 37.47 | 32.52 | 43.98 | b | ||||||||||
1949 | 23.81 | 36.64 | 40.45 | 41.67 | 45.84 | 46.97 | a | 48.48 | 50.97 | 48.90 | 39.42 | 43.21 | a | 34.97 | 41.78 | |||||||||||
1950 | 27.13 | 34.21 | 36.71 | 37.63 | 39.87 | 48.47 | 49.42 | 51.48 | 48.27 | 45.10 | 42.90 | 44.87 | 42.17 | |||||||||||||
1951 | 37.39 | 38.39 | 34.13 | 40.23 | 43.83 | g | 46.63 | 51.10 | 48.06 | 46.97 | 45.84 | 40.67 | 34.94 | 42.21 | a | |||||||||||
1952 | 34.35 | 37.34 | 37.00 | 38.77 | 42.03 | 46.53 | 48.32 | 49.74 | 46.30 | 42.68 | 31.97 | 35.52 | 40.88 | |||||||||||||
1953 | 40.94 | 35.86 | 36.71 | 39.50 | 42.06 | 45.50 | 47.87 | 50.97 | 47.87 | 42.68 | c | 42.83 | 39.13 | 42.66 | ||||||||||||
1954 | 35.81 | 38.39 | 33.16 | 39.40 | 42.71 | 46.93 | 48.55 | 50.48 | 48.67 | 41.42 | 43.77 | 35.42 | 42.06 | |||||||||||||
1955 | 35.32 | ----- | z | ----- | z | 37.84 | e | 41.06 | 47.20 | 49.87 | 48.23 | 46.90 | 46.17 | a | 40.17 | 37.71 | 43.05 | b | ||||||||
1956 | 35.97 | 32.10 | 36.23 | 40.17 | 46.52 | 47.10 | 51.45 | 50.39 | 46.77 | 42.58 | 37.27 | 36.42 | 41.91 | |||||||||||||
1957 | 29.16 | 37.79 | 40.19 | 40.77 | 47.19 | 49.60 | 47.74 | 47.35 | 48.57 | 44.87 | 35.83 | 38.32 | 42.28 | |||||||||||||
1958 | 38.10 | 42.93 | 36.19 | 40.23 | 47.03 | 53.63 | 54.26 | ----- | z | 47.80 | 43.13 | 42.43 | 41.42 | 44.29 | a | |||||||||||
1959 | 38.94 | 35.82 | 37.87 | 40.37 | 42.71 | 49.27 | 50.26 | 48.90 | 48.97 | 45.97 | 36.83 | 35.61 | 42.63 | |||||||||||||
1960 | 34.13 | 35.38 | 39.84 | 40.97 | 43.97 | 47.63 | 49.48 | 49.52 | 46.87 | 45.03 | 38.07 | 36.39 | 42.27 | |||||||||||||
1961 | 36.26 | 40.89 | 39.87 | 39.33 | 45.00 | 50.00 | 51.45 | 53.58 | 44.70 | 42.55 | 35.30 | 37.16 | 43.01 | |||||||||||||
1962 | 31.00 | 36.54 | 37.58 | 41.13 | 42.68 | 45.87 | 47.90 | 50.00 | 48.87 | 46.03 | 42.30 | 37.61 | 42.29 | |||||||||||||
1963 | 27.70 | a | 43.32 | 37.29 | 39.77 | 43.52 | 47.73 | 49.06 | 50.87 | 52.10 | 46.13 | 41.23 | 36.10 | 42.90 | ||||||||||||
1964 | 36.74 | 32.72 | 36.65 | 37.00 | 40.29 | 47.47 | 49.77 | 49.58 | 44.23 | 45.13 | 38.60 | 36.93 | a | 41.26 | ||||||||||||
1965 | 36.87 | 36.18 | 34.32 | 41.50 | 41.13 | 46.53 | 49.26 | 52.19 | 44.53 | 47.77 | 43.20 | 35.10 | 42.38 | |||||||||||||
1966 | 36.71 | 34.43 | 38.06 | 40.23 | 40.94 | 46.93 | 49.65 | 48.58 | 50.10 | 44.13 | 42.03 | 39.00 | a | 42.57 | ||||||||||||
1967 | 38.45 | 37.18 | 36.68 | 37.30 | 41.65 | 50.33 | 49.68 | 51.32 | 49.43 | 47.03 | 41.57 | 35.03 | 42.97 | |||||||||||||
1968 | 36.10 | 40.17 | 40.23 | 37.20 | 43.90 | 49.17 | 51.19 | 52.76 | f | 51.13 | 44.35 | 42.60 | 36.53 | a | 42.96 | a | ||||||||||
1969 | 33.68 | 33.25 | 34.83 | a | 40.07 | 46.63 | a | 53.17 | 50.03 | a | 48.00 | 48.97 | a | 43.32 | 40.53 | 38.77 | a | 42.60 | ||||||||
1970 | 39.19 | 38.68 | 38.58 | 36.38 | a | 42.97 | a | 49.53 | 49.23 | a | 49.39 | 44.57 | 41.94 | 41.93 | 35.90 | 42.36 | ||||||||||
1971 | 34.58 | 36.79 | 36.94 | 39.23 | 44.32 | 47.53 | 52.42 | 54.97 | 47.23 | 44.00 | a | 39.67 | 34.90 | 42.72 | ||||||||||||
1972 | 34.42 | 39.31 | 42.61 | 38.33 | 44.52 | 48.97 | 54.03 | a | 52.26 | 46.63 | 40.20 | k | 43.17 | 33.00 | a | 43.39 | a | |||||||||
1973 | 35.19 | 39.64 | 38.10 | 39.47 | 44.45 | 50.73 | 51.32 | 49.68 | 47.25 | n | 43.21 | g | 37.95 | j | 41.43 | a | 43.34 | c | ||||||||
1974 | 33.36 | c | 36.61 | 38.77 | 41.21 | b | 44.25 | o | 49.26 | g | 53.07 | d | 53.31 | b | 50.61 | g | 38.68 | l | 40.14 | i | 40.64 | c | 42.43 | e | ||
1975 | 39.11 | d | 38.52 | a | 38.23 | a | 35.75 | n | 43.00 | j | 48.00 | f | 53.28 | b | 51.28 | f | 47.50 | f | 44.47 | n | 38.56 | u | 39.77 | e | 41.78 | g |
1976 | 36.71 | c | 35.04 | f | 36.10 | b | 40.10 | 43.87 | a | 46.04 | c | 51.48 | d | 53.41 | d | 51.53 | k | 41.50 | m | 43.80 | e | 34.24 | b | 42.86 | c | |
1977 | 32.83 | b | 39.73 | b | 36.27 | a | 40.11 | b | 44.67 | a | 51.00 | b | 50.43 | h | 57.07 | c | 50.18 | h | 46.93 | q | 40.77 | d | 41.97 | 42.71 | c | |
1978 | 41.48 | 40.48 | a | 41.26 | 44.77 | 46.03 | b | 53.90 | j | 53.04 | g | 52.86 | i | 50.18 | s | 47.00 | u | 33.54 | q | 31.24 | n | 42.80 | g | |||
1979 | 29.30 | k | 36.94 | l | 42.94 | 44.00 | 47.42 | 47.77 | 51.61 | 53.19 | 52.70 | 48.81 | 39.87 | 38.48 | 46.68 | b | ||||||||||
1980 | 32.06 | 39.76 | 38.19 | d | 40.53 | 44.48 | 48.07 | 53.48 | 50.45 | 48.70 | 42.58 | 41.38 | a | 38.77 | 43.21 | |||||||||||
1981 | 38.97 | 39.00 | 39.77 | 41.73 | 46.29 | 49.77 | 52.26 | 55.06 | 50.07 | 43.97 | 40.64 | b | 40.11 | d | 44.80 | |||||||||||
1982 | 34.73 | i | 36.12 | c | 38.37 | a | 37.18 | b | 41.83 | b | 51.03 | 51.71 | 51.58 | 49.53 | 46.68 | 37.33 | i | 34.30 | k | 44.89 | c | |||||
1983 | 37.08 | e | 40.68 | 42.48 | 39.70 | 46.14 | b | 49.07 | 51.07 | b | 53.81 | 47.83 | 45.84 | 43.57 | 35.45 | 44.39 | ||||||||||
1984 | 36.84 | 38.90 | 42.29 | 39.80 | 43.68 | 47.80 | 50.55 | 51.61 | 47.83 | 45.81 | 42.31 | a | 35.55 | 43.58 | ||||||||||||
1985 | 34.35 | 35.11 | a | 36.10 | a | 43.10 | 43.77 | 47.63 | 51.65 | 50.74 | 47.00 | 41.90 | b | 33.89 | c | 31.00 | 41.35 | |||||||||
1986 | 40.19 | 41.82 | 42.97 | 41.13 | 45.81 | 52.07 | 50.87 | 52.19 | 48.90 | 48.10 | 43.38 | a | 38.23 | a | 45.47 | |||||||||||
1987 | 35.55 | 38.61 | 40.17 | a | 42.33 | c | 47.48 | 48.04 | d | 52.87 | 50.39 | 47.83 | 42.74 | 44.46 | b | 37.74 | 44.02 | |||||||||
1988 | 37.70 | a | 38.93 | 40.55 | 46.13 | 47.08 | e | 51.32 | h | 51.60 | a | 48.77 | 46.59 | a | 49.52 | 42.50 | 35.84 | 44.11 | a | |||||||
1989 | 37.32 | 29.46 | 40.10 | a | 43.50 | 45.45 | 49.77 | d | 51.61 | 52.63 | a | 47.40 | 44.03 | 42.50 | 37.29 | 43.42 | ||||||||||
1990 | 38.27 | a | 36.11 | 40.70 | a | 44.76 | a | 44.53 | a | 50.62 | a | 53.00 | 54.77 | 52.33 | 45.32 | 42.50 | 28.90 | a | 44.32 | |||||||
1991 | 34.07 | b | 42.84 | c | 38.10 | 42.13 | 44.87 | 48.13 | 53.23 | 53.00 | 47.53 | 41.68 | 43.55 | a | 39.06 | 44.02 | ||||||||||
1992 | 39.10 | a | 41.79 | 43.45 | 47.77 | 47.68 | 51.73 | 54.68 | 50.61 | 49.13 | 46.68 | 44.76 | a | 37.26 | 46.22 | |||||||||||
1993 | 34.77 | 36.22 | a | 44.90 | 44.30 | 49.42 | 50.60 | 51.90 | 53.84 | 48.63 | 47.48 | 33.57 | 34.74 | 44.20 | ||||||||||||
1994 | 38.19 | 35.64 | 39.94 | 43.13 | 46.90 | 48.50 | 51.48 | 49.39 | 49.83 | 43.19 | 37.55 | a | 37.68 | 43.45 | ||||||||||||
1995 | 39.81 | 42.36 | 38.35 | 40.93 | 45.42 | 48.10 | 53.81 | 48.90 | 52.10 | 44.03 | 45.60 | 40.39 | 44.98 | |||||||||||||
1996 | 38.55 | 38.45 | 39.40 | a | 42.97 | 45.19 | 48.73 | 53.61 | 50.61 | 46.37 | 46.43 | a | 42.66 | a | 38.81 | 44.31 | ||||||||||
1997 | 36.87 | 37.61 | 39.32 | 41.37 | 46.97 | 48.93 | 52.84 | 51.58 | 51.90 | 45.67 | a | 43.62 | a | 35.03 | 44.31 | |||||||||||
1998 | 40.19 | 39.08 | b | 40.89 | c | 40.63 | 45.97 | a | 49.78 | c | 55.19 | e | 55.14 | i | 50.24 | a | 44.21 | c | 42.00 | b | 33.85 | d | 43.82 | a | ||
1999 | 37.66 | b | 37.48 | c | 37.62 | b | 37.70 | 42.11 | c | 46.12 | e | 48.93 | d | 54.52 | 42.87 | 39.17 | b | 43.38 | a | 37.33 | a | 42.07 | ||||
2000 | 35.90 | b | 40.76 | 37.84 | 42.83 | 47.00 | 49.93 | 53.45 | 51.86 | b | 49.57 | 45.87 | 39.20 | 40.32 | 44.54 | |||||||||||
2001 | 39.74 | 36.71 | 40.16 | 40.67 | 44.87 | 48.15 | c | 51.42 | 53.94 | 49.17 | 45.43 | j | 43.73 | 38.55 | 44.28 | a | ||||||||||
2002 | 38.82 | c | 37.39 | 36.42 | 41.97 | 44.06 | 50.00 | 53.87 | 51.46 | e | 50.11 | k | 41.45 | 39.70 | 39.34 | b | 43.14 | a | ||||||||
2003 | 42.77 | 35.96 | 43.26 | 41.68 | b | 45.29 | 49.24 | a | 51.42 | 51.17 | g | 50.63 | c | 47.74 | 39.47 | 39.19 | 44.24 | a | ||||||||
2004 | 38.52 | 39.52 | 40.59 | d | 40.27 | 46.74 | 50.13 | 52.27 | a | 52.00 | 49.60 | e | 46.03 | 39.27 | 38.48 | d | 44.45 | |||||||||
2005 | 37.19 | 35.32 | 39.97 | 42.23 | 49.17 | a | 50.97 | 54.20 | f | 51.50 | a | 45.80 | 47.71 | 39.97 | 37.63 | a | 43.41 | a | ||||||||
2006 | 40.17 | a | 34.54 | 37.35 | 41.67 | 44.97 | 52.10 | 53.35 | 50.23 | 47.33 | 41.29 | 43.07 | b | 36.79 | c | 43.57 | ||||||||||
2007 | 31.83 | a | 37.18 | 41.35 | 40.30 | 43.32 | 46.77 | 54.84 | 52.26 | 46.70 | 45.39 | 39.63 | 37.13 | a | 43.06 | |||||||||||
2008 | 33.32 | 38.24 | 37.61 | 38.97 | 47.06 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 39.04 | g | |||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 35.89 | 37.68 | 38.80 | 40.78 | 44.65 | 48.71 | 51.28 | 51.09 | 48.10 | 44.79 | 40.72 | 37.26 | 43.16 | |||||||||||||
S.D. | 3.64 | 2.68 | 2.39 | 2.14 | 2.13 | 1.90 | 1.88 | 2.11 | 2.26 | 2.45 | 2.96 | 2.59 | 1.16 | |||||||||||||
SKEW | -1.15 | -0.18 | 0.21 | 0.54 | -0.18 | 0.52 | 0.03 | 0.32 | -0.01 | -0.22 | -0.96 | -0.21 | 0.38 | |||||||||||||
MAX | 42.77 | 43.32 | 44.90 | 47.77 | 49.42 | 53.63 | 55.19 | 57.07 | 53.00 | 49.52 | 45.60 | 44.87 | 46.22 | |||||||||||||
MIN | 23.81 | 29.46 | 33.16 | 36.38 | 39.87 | 45.37 | 47.74 | 46.10 | 42.87 | 39.17 | 31.97 | 28.90 | 40.88 | |||||||||||||
YRS | 69 | 68 | 70 | 71 | 70 | 66 | 68 | 64 | 64 | 64 | 67 | 70 | 48 |