YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1937 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 62.14 | i | 54.39 | 46.24 | a | 40.57 | b | 47.07 | i | |
1938 | 37.79 | 40.18 | 43.16 | 50.75 | 57.48 | b | 65.80 | 73.47 | 66.47 | 64.37 | 52.83 | b | 40.71 | b | 38.95 | 52.66 | ||||||||||
1939 | 36.36 | b | 37.48 | 47.00 | 54.24 | a | 57.92 | 61.38 | 70.58 | 71.15 | 62.67 | 51.98 | a | 42.93 | 41.16 | 52.90 | ||||||||||
1940 | 40.76 | 43.26 | 48.23 | 51.88 | a | 59.82 | 67.65 | 68.37 | 70.00 | 61.55 | a | 53.27 | 41.73 | 40.60 | a | 53.93 | ||||||||||
1941 | 40.48 | a | 45.50 | c | 48.10 | 50.42 | 57.69 | 61.75 | 71.79 | 67.50 | 58.27 | 50.48 | 46.07 | b | 38.14 | c | 53.02 | |||||||||
1942 | 38.68 | 39.20 | 42.89 | 49.02 | 53.68 | 60.18 | 69.85 | 70.42 | 62.60 | 52.63 | 43.22 | 39.26 | 51.80 | |||||||||||||
1943 | 33.78 | a | 42.39 | 45.39 | 51.70 | 53.90 | 59.62 | 68.39 | 65.56 | 66.93 | 51.98 | a | 41.72 | a | 37.00 | 51.53 | ||||||||||
1944 | 36.65 | a | 39.66 | a | 43.13 | 47.82 | 55.52 | 60.62 | 68.44 | 66.95 | 63.70 | 53.17 | b | 39.00 | a | 36.42 | a | 50.92 | ||||||||
1945 | 37.57 | b | 39.74 | a | 40.02 | 46.50 | 56.19 | 61.70 | 70.97 | 69.16 | 60.88 | 53.92 | 43.48 | 38.73 | 51.57 | |||||||||||
1946 | 35.58 | 39.41 | 42.90 | a | 50.84 | a | 58.32 | 60.38 | 69.29 | 68.79 | 59.32 | 47.19 | 41.22 | a | 37.48 | 50.90 | ||||||||||
1947 | 33.40 | 43.07 | 47.50 | 51.83 | 59.39 | 59.87 | 65.81 | 64.31 | 61.93 | 54.26 | 42.43 | 36.90 | b | 51.72 | ||||||||||||
1948 | 35.38 | b | 36.84 | 41.31 | 44.88 | 53.21 | 63.58 | 65.38 | a | 64.75 | a | 58.90 | 52.16 | 40.18 | 34.18 | 49.23 | ||||||||||
1949 | 26.44 | 37.18 | 46.06 | 53.13 | 57.90 | 62.85 | 67.68 | 65.89 | 63.07 | 47.98 | 44.15 | 35.35 | 50.64 | |||||||||||||
1950 | 32.37 | 38.86 | 43.08 | 49.75 | 55.94 | 63.28 | 69.60 | 70.35 | a | 62.81 | a | 53.26 | 46.43 | 43.87 | 52.47 | |||||||||||
1951 | 38.15 | 41.48 | 43.35 | 54.73 | 56.69 | 64.87 | 70.45 | 68.65 | 65.38 | 50.97 | a | 44.15 | 35.35 | 52.85 | ||||||||||||
1952 | 34.60 | 39.33 | 42.68 | 52.75 | 57.53 | 61.20 | 71.85 | 68.19 | 65.17 | 56.19 | 37.80 | 38.65 | 52.16 | |||||||||||||
1953 | 42.11 | 42.18 | 45.12 | a | 50.12 | 52.55 | 58.28 | 67.77 | 67.24 | 65.16 | a | 51.02 | 48.75 | 38.62 | g | 53.66 | a | |||||||||
1954 | 39.48 | 44.32 | 44.58 | 52.57 | 59.74 | 60.08 | 67.66 | 65.13 | 59.85 | 52.55 | 45.23 | 38.24 | 52.45 | |||||||||||||
1955 | 36.76 | 38.18 | 43.90 | 46.17 | 56.16 | 64.65 | 67.32 | 68.87 | 61.13 | 54.87 | 42.97 | a | 41.71 | 51.89 | ||||||||||||
1956 | 41.55 | 38.05 | 44.35 | 53.45 | 58.95 | 61.27 | 70.74 | 66.58 | 61.57 | a | 50.55 | a | 40.62 | a | 34.82 | 51.88 | ||||||||||
1957 | 33.65 | 44.05 | 47.73 | 52.28 | a | 59.05 | 65.62 | a | 66.82 | 64.18 | 65.10 | 51.65 | 40.52 | 39.05 | 52.47 | |||||||||||
1958 | 39.68 | 47.80 | 44.05 | 50.92 | 62.69 | 65.52 | 72.53 | a | 73.30 | a | 62.32 | 56.85 | 45.58 | 43.13 | 55.36 | |||||||||||
1959 | 42.15 | 41.86 | 46.21 | 53.50 | 54.79 | 64.37 | 72.39 | 67.61 | 60.70 | 54.81 | 42.72 | 34.66 | 52.98 | |||||||||||||
1960 | 39.66 | 42.48 | 49.11 | 51.35 | 54.85 | 65.70 | 72.37 | 68.53 | 65.08 | 54.03 | 45.15 | 38.76 | 53.92 | |||||||||||||
1961 | 41.42 | 45.73 | 46.52 | 51.72 | 56.03 | 68.65 | 70.52 | 73.24 | 60.87 | 53.71 | 42.78 | 37.45 | 54.05 | |||||||||||||
1962 | 33.71 | 41.93 | 45.05 | 54.53 | 54.44 | 62.60 | 68.69 | 67.53 | 65.20 | 52.45 | 45.80 | 39.50 | 52.62 | |||||||||||||
1963 | 33.10 | 49.04 | 46.50 | 48.00 | 58.42 | 62.12 | 65.89 | 68.47 | 67.65 | 53.95 | 44.25 | 38.03 | 52.95 | |||||||||||||
1964 | 37.56 | 40.50 | 44.00 | 48.98 | a | 54.65 | 62.52 | 70.00 | 68.29 | 61.37 | 56.69 | 41.85 | 41.06 | 52.29 | ||||||||||||
1965 | 37.63 | 41.84 | 47.56 | 52.65 | 55.23 | 62.62 | 70.21 | 68.61 | 60.68 | 56.69 | 46.88 | 35.40 | 53.00 | |||||||||||||
1966 | 38.69 | 41.34 | 47.52 | 53.90 | 59.82 | 63.35 | 67.34 | 69.68 | 64.67 | 53.53 | 46.27 | 40.68 | 53.90 | |||||||||||||
1967 | 40.10 | 41.73 | 44.55 | 45.35 | 58.32 | 66.27 | 72.15 | 74.85 | 67.92 | 53.27 | 44.78 | 35.52 | 53.73 | |||||||||||||
1968 | 37.87 | 47.79 | a | 49.56 | 50.98 | 57.11 | 66.07 | 71.98 | 68.52 | 64.75 | 52.87 | 44.48 | 38.77 | 54.23 | ||||||||||||
1969 | 35.73 | 40.79 | 46.65 | 50.95 | 61.53 | 66.98 | 69.60 | 68.06 | 64.73 | 50.13 | a | 42.13 | 40.44 | 53.14 | ||||||||||||
1970 | 43.52 | 44.30 | 47.52 | 46.57 | 58.35 | 68.75 | 72.71 | 70.44 | 61.27 | 52.52 | 47.73 | 38.39 | 54.34 | |||||||||||||
1971 | 35.40 | 40.34 | 44.50 | 49.35 | 57.35 | 62.10 | 71.18 | 72.44 | 61.72 | 50.85 | 42.17 | 35.81 | 51.93 | |||||||||||||
1972 | 36.06 | 43.50 | 50.20 | a | 50.10 | 59.13 | 65.68 | 72.65 | 71.03 | 61.03 | 51.66 | 43.87 | 33.31 | 53.19 | ||||||||||||
1973 | 38.79 | 45.32 | 44.55 | 51.27 | 61.56 | 65.63 | 71.95 | 69.03 | 63.90 | 51.53 | 45.48 | a | 43.26 | 54.36 | ||||||||||||
1974 | 37.68 | 40.84 | 46.16 | 50.00 | 56.31 | 67.63 | 69.48 | 71.19 | 67.17 | 52.53 | 44.98 | 39.81 | 53.65 | |||||||||||||
1975 | 37.03 | 42.27 | 44.15 | 45.90 | 58.50 | 63.65 | 71.18 | 66.50 | 65.73 | 51.76 | 41.67 | 39.76 | 52.34 | |||||||||||||
1976 | 39.78 | a | 41.67 | 43.94 | 49.18 | 58.79 | 60.98 | 70.13 | 66.27 | 64.18 | 52.64 | b | 44.53 | 32.97 | a | 52.09 | ||||||||||
1977 | 35.18 | 44.96 | 44.50 | 54.43 | 53.50 | 68.55 | 70.27 | 74.11 | 62.62 | 52.90 | 42.65 | 42.90 | 53.88 | |||||||||||||
1978 | 43.74 | 44.27 | 50.63 | 49.20 | 56.02 | 65.78 | 70.58 | 69.03 | 58.70 | 54.79 | 38.78 | 33.50 | 52.92 | |||||||||||||
1979 | 36.42 | 42.39 | 49.58 | 51.12 | 58.63 | 64.72 | 70.11 | 67.81 | 65.78 | 57.08 | 42.20 | 40.94 | 53.90 | |||||||||||||
1980 | 38.71 | 45.98 | 44.53 | 52.02 | 55.53 | 59.95 | 70.56 | 66.48 | 63.20 | 53.10 | 43.18 | 38.95 | 52.68 | |||||||||||||
1981 | 42.18 | 42.02 | 46.74 | 53.17 | a | 57.18 | a | 64.17 | 69.60 | a | 72.63 | a | 64.55 | 51.39 | 45.22 | 42.84 | 54.31 | |||||||||
1982 | 34.52 | 41.39 | 43.77 | 48.73 | 56.26 | 64.98 | 68.56 | 68.00 | 59.77 | 52.77 | 41.32 | 39.00 | 51.59 | |||||||||||||
1983 | 39.90 | b | 44.98 | 48.42 | 47.42 | 58.39 | 61.55 | 63.59 | h | 69.02 | 60.28 | 52.95 | 45.05 | 40.88 | b | 51.71 | a | |||||||||
1984 | 37.87 | 42.66 | 47.94 | 48.42 | 56.39 | 60.78 | 71.13 | 68.52 | 61.03 | 50.45 | 44.05 | 36.55 | 52.15 | |||||||||||||
1985 | 36.42 | k | 40.86 | c | 42.95 | 53.85 | 56.13 | 65.50 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 35.27 | a | 49.09 | f | ||||
1986 | 44.31 | 46.05 | 50.61 | 50.30 | 57.23 | 68.28 | a | 67.16 | 73.35 | 58.58 | 52.00 | 42.80 | e | 36.78 | b | 53.95 | ||||||||||
1987 | 36.10 | a | 41.54 | b | 46.30 | d | 54.50 | 59.45 | a | 66.52 | 66.24 | 68.76 | 60.93 | 55.97 | a | 43.93 | b | 38.66 | 53.24 | |||||||
1988 | 38.76 | 41.86 | a | 44.92 | a | 51.80 | 54.19 | 62.02 | 70.14 | c | 68.05 | 61.33 | 56.44 | 43.93 | b | 37.50 | d | 52.58 | ||||||||
1989 | 35.70 | a | 35.96 | 45.77 | a | 54.19 | a | 55.76 | b | 64.33 | 65.95 | 66.19 | 60.65 | 50.76 | 41.00 | 34.76 | 50.92 | |||||||||
1990 | 38.68 | 38.64 | 47.19 | 54.50 | 54.27 | 62.37 | 71.16 | c | ----- | z | ----- | z | 49.63 | 40.36 | a | 30.13 | a | 48.69 | b | |||||||
1991 | 34.69 | 46.02 | 43.24 | 47.32 | 52.95 | 60.00 | a | 70.62 | a | 69.68 | 65.32 | 54.45 | 45.80 | 37.75 | a | 52.32 | ||||||||||
1992 | 39.23 | 46.95 | 49.31 | 54.65 | 61.62 | a | 66.37 | 69.44 | 69.85 | 60.88 | a | 53.26 | 43.16 | b | 37.35 | 54.34 | ||||||||||
1993 | 37.15 | a | 40.43 | 49.48 | 49.67 | a | 59.05 | 61.16 | a | 62.35 | 65.72 | a | 62.10 | 54.71 | 37.79 | b | 37.43 | d | 51.42 | |||||||
1994 | 39.84 | b | 40.62 | 47.42 | a | 51.34 | b | 58.28 | a | 62.17 | a | 71.92 | 67.55 | 63.62 | 49.58 | 37.32 | e | 38.50 | f | 53.61 | a | |||||
1995 | 44.37 | 46.09 | 45.72 | f | 49.81 | i | 58.65 | h | 60.96 | d | 69.58 | f | 64.52 | j | 63.97 | k | 51.00 | m | 47.40 | o | 44.68 | q | 50.47 | i | ||
1996 | 38.60 | u | 46.13 | j | 46.69 | o | 51.15 | j | 54.36 | j | 60.46 | p | 72.84 | l | 69.42 | k | 58.88 | j | 51.57 | j | 43.88 | r | 39.61 | l | ----- | z |
1997 | 37.50 | l | 40.74 | i | 47.90 | k | 52.47 | o | 59.95 | k | 63.59 | m | 70.00 | o | 70.12 | n | 61.70 | j | 51.79 | l | 46.19 | q | 38.76 | n | ----- | z |
1998 | 41.97 | m | 43.03 | k | 45.74 | n | 50.70 | j | 53.12 | n | 63.03 | k | 74.24 | l | 71.36 | m | 64.55 | i | 50.62 | k | 43.66 | n | 34.75 | q | ----- | z |
1999 | 37.37 | p | 39.53 | k | 43.69 | m | 48.11 | k | 55.31 | m | 61.25 | j | 69.04 | r | 69.38 | n | 60.85 | m | 53.43 | q | 48.00 | n | 38.62 | o | ----- | z |
2000 | 37.17 | p | 44.38 | m | 44.13 | p | 52.38 | n | 55.56 | m | 64.94 | n | 68.03 | n | 69.77 | p | 62.68 | p | 50.55 | k | 39.25 | l | 37.04 | r | ----- | z |
2001 | 38.05 | j | 40.14 | j | 47.67 | k | 48.19 | l | 59.97 | l | 61.98 | j | 69.16 | o | 70.35 | k | 62.76 | k | 52.45 | k | 46.20 | o | 40.78 | o | ----- | z |
2002 | 38.17 | m | 43.37 | i | 44.08 | m | 52.26 | k | 52.50 | m | 64.34 | n | 73.00 | l | 67.38 | k | 63.33 | l | 50.11 | l | 44.64 | l | 41.81 | r | ----- | z |
2003 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 37.80 | 42.16 | 45.83 | 50.82 | 57.13 | 63.55 | 69.65 | 68.70 | 62.74 | 52.84 | 43.18 | 38.11 | 52.72 | |||||||||||||
S.D. | 3.31 | 2.95 | 2.45 | 2.63 | 2.33 | 2.68 | 2.26 | 2.48 | 2.44 | 2.12 | 2.50 | 2.87 | 1.18 | |||||||||||||
SKEW | -0.40 | 0.19 | 0.10 | -0.39 | 0.12 | 0.20 | -0.80 | 0.50 | 0.19 | -0.09 | -0.31 | -0.21 | -0.32 | |||||||||||||
MAX | 44.37 | 49.04 | 50.63 | 54.73 | 62.69 | 68.75 | 73.47 | 74.85 | 67.92 | 57.08 | 48.75 | 43.87 | 55.36 | |||||||||||||
MIN | 26.44 | 35.96 | 40.02 | 44.88 | 52.55 | 58.28 | 62.35 | 64.18 | 58.27 | 47.19 | 37.32 | 30.13 | 49.23 | |||||||||||||
YRS | 57 | 58 | 57 | 57 | 57 | 58 | 55 | 55 | 55 | 57 | 57 | 56 | 52 |