YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1926 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 76.69 | w | 75.82 | 67.69 | a | 56.92 | 42.34 | b | 27.61 | 54.08 | g | |||
1927 | 31.68 | 42.57 | 45.48 | 53.80 | 61.69 | 68.93 | c | 74.66 | o | 72.37 | h | 66.16 | a | 53.48 | 44.32 | 29.94 | 49.80 | b | ||||||||
1928 | 32.92 | 37.83 | 47.27 | 49.52 | 62.95 | 67.72 | 75.15 | 72.11 | 66.38 | 54.77 | 40.88 | a | 29.87 | 53.11 | ||||||||||||
1929 | 30.60 | 31.64 | 43.03 | a | ----- | z | 60.34 | 68.87 | 77.37 | 74.03 | a | ----- | z | 54.06 | 35.65 | 30.82 | 50.64 | b | ||||||||
1930 | 25.08 | a | 36.00 | 42.08 | 56.10 | 58.56 | 70.07 | a | 75.69 | 73.60 | 64.73 | 51.21 | 37.15 | 25.19 | 51.29 | |||||||||||
1931 | 26.08 | 39.95 | 41.65 | 53.83 | 57.40 | 71.40 | 77.26 | 74.23 | 68.12 | 55.58 | 35.67 | 21.31 | 51.87 | |||||||||||||
1932 | 23.02 | 34.55 | 38.98 | a | 48.75 | 59.24 | 66.97 | 75.90 | 74.27 | 63.84 | a | 53.45 | 45.72 | a | 19.00 | g | 53.16 | a | ||||||||
1933 | 18.37 | 26.58 | b | 46.66 | 48.60 | 56.61 | 73.22 | 79.19 | 75.77 | 71.10 | 58.13 | 43.18 | 36.45 | 52.82 | ||||||||||||
1934 | 33.70 | a | ----- | z | 53.42 | 56.98 | 66.25 | a | 69.95 | 78.06 | f | 77.06 | 66.45 | 57.27 | 44.05 | a | 30.90 | 55.60 | b | |||||||
1935 | 29.53 | 35.18 | 43.77 | 51.41 | a | 58.05 | 70.47 | 77.60 | 76.00 | a | ----- | z | 57.84 | ----- | z | 31.60 | 53.14 | b | ||||||||
1936 | 31.44 | 37.77 | a | 45.63 | 53.75 | t | 63.42 | 63.86 | w | 76.20 | p | 73.53 | 64.77 | 53.27 | 43.20 | 32.32 | 49.48 | c | ||||||||
1937 | 15.87 | 34.16 | 45.08 | a | 58.90 | a | 66.63 | 69.91 | a | 76.89 | 76.48 | 67.42 | 55.97 | 43.12 | 33.87 | 53.69 | ||||||||||
1938 | 35.86 | c | 39.89 | 42.87 | a | 56.15 | 71.07 | a | ----- | z | 74.91 | o | ----- | z | 69.29 | k | 51.91 | t | 39.83 | r | 34.20 | a | 46.67 | f | ||
1939 | 32.32 | 28.82 | 45.82 | a | 54.71 | a | ----- | z | 68.18 | 77.37 | h | 75.80 | a | 69.80 | b | 53.95 | 42.84 | a | 36.03 | o | 52.47 | c | ||||
1940 | 31.05 | 38.38 | d | 46.77 | 54.25 | 64.73 | 73.67 | a | 78.13 | 76.19 | b | 70.22 | a | 58.23 | 40.38 | 33.48 | b | 55.46 | ||||||||
1941 | 33.84 | b | 39.32 | 45.46 | f | 50.32 | e | 63.76 | f | 68.38 | d | 75.44 | e | 74.79 | g | 66.16 | h | 55.23 | e | 41.88 | 35.02 | a | 49.93 | d | ||
1942 | 29.33 | b | 32.59 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 30.96 | j | |
1943 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1944 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 73.29 | w | 76.69 | 75.66 | 67.93 | 57.65 | 40.58 | 32.58 | 58.52 | f | ||||||
1945 | 33.03 | 38.95 | 41.11 | 47.81 | a | 61.97 | 67.50 | 79.71 | 78.63 | a | 66.28 | 55.10 | 39.53 | a | 25.21 | 52.90 | ||||||||||
1946 | 29.00 | a | 35.61 | 45.37 | a | 57.93 | 61.00 | 73.02 | a | 78.06 | 75.52 | a | 67.25 | 51.18 | 39.43 | 35.74 | 54.09 | |||||||||
1947 | 25.00 | 38.61 | 44.24 | 52.48 | 64.65 | 71.37 | 79.48 | a | 75.02 | 69.05 | 55.71 | 37.02 | 31.18 | 53.65 | ||||||||||||
1948 | 29.97 | 34.92 | c | 38.92 | 54.60 | 61.97 | 69.38 | 75.85 | a | 73.84 | 67.07 | 53.35 | 35.98 | 33.00 | 52.40 | |||||||||||
1949 | 28.14 | b | 30.88 | 43.76 | 54.18 | 59.58 | a | 68.48 | 76.00 | 73.21 | 67.40 | 50.40 | 41.92 | 29.53 | 51.96 | |||||||||||
1950 | 31.21 | 38.55 | 42.87 | a | 54.00 | 60.75 | a | 72.22 | a | 77.10 | 73.50 | 64.75 | 59.68 | 42.33 | 34.87 | 54.32 | ||||||||||
1951 | 30.33 | a | 35.14 | 42.35 | 51.52 | 62.93 | a | 69.28 | 80.03 | 75.08 | 65.63 | 41.44 | 35.98 | 24.58 | 51.19 | |||||||||||
1952 | 30.60 | 34.78 | 38.89 | c | 52.45 | 61.13 | 73.93 | 76.34 | 76.44 | 66.47 | 53.37 | 34.42 | 27.58 | 52.20 | ||||||||||||
1953 | 31.84 | ----- | z | 51.27 | r | 53.31 | c | 59.98 | 71.40 | f | ----- | z | 73.08 | e | 66.27 | 53.77 | 41.13 | 25.55 | b | 50.62 | d | |||||
1954 | 30.17 | a | 38.15 | b | 39.10 | a | 55.81 | f | 62.75 | a | 70.22 | g | 78.78 | a | 74.10 | 68.62 | 57.88 | g | 44.36 | a | 30.77 | 51.87 | c | |||
1955 | 28.60 | 28.43 | 42.63 | 48.82 | 59.34 | 68.39 | b | 75.64 | b | 75.73 | 67.63 | 54.72 | a | 38.90 | a | 33.00 | b | 51.82 | ||||||||
1956 | 35.10 | b | 30.38 | 42.95 | 51.46 | c | 62.86 | c | 74.77 | b | 76.57 | a | 72.62 | a | 67.95 | 55.78 | b | 33.52 | a | 28.05 | a | 52.67 | ||||
1957 | 34.21 | 41.88 | b | 44.53 | 48.25 | j | 57.87 | 71.07 | o | 74.76 | 74.31 | 64.45 | b | 54.87 | a | 37.42 | f | 32.64 | b | 53.28 | c | |||||
1958 | 29.69 | b | 39.77 | 38.47 | b | 48.71 | a | 63.13 | 73.18 | 74.52 | a | 74.66 | b | 65.29 | a | 55.00 | i | ----- | z | 34.70 | h | 56.38 | c | |||
1959 | 31.63 | a | 36.27 | 42.47 | 53.90 | d | 62.95 | 76.03 | 79.00 | 75.06 | 67.57 | 54.06 | 40.27 | 34.10 | 54.44 | |||||||||||
1960 | 26.62 | a | 32.59 | b | 46.23 | a | 53.66 | a | 60.71 | c | 73.33 | a | 79.35 | a | 76.47 | 69.37 | o | 52.75 | a | 41.48 | d | 24.66 | o | 54.32 | b | |
1961 | 19.28 | h | 38.06 | c | 43.15 | a | 51.70 | e | 61.76 | d | 75.03 | a | 77.41 | c | 75.79 | 62.64 | a | 54.04 | c | 39.38 | f | 16.66 | b | 55.62 | b | |
1962 | 18.27 | 35.54 | b | 40.27 | 55.68 | b | 59.88 | e | 71.25 | h | 80.53 | k | ----- | z | ----- | z | ----- | z | 46.31 | q | 33.55 | j | 41.93 | g | ||
1963 | 23.38 | k | 38.23 | h | 44.59 | o | 54.63 | d | ----- | z | ----- | z | 82.29 | x | 75.68 | l | 70.92 | 61.27 | 44.45 | 28.15 | 51.88 | g | ||||
1964 | 29.27 | 32.28 | 39.58 | 49.95 | 63.47 | 70.72 | a | 79.63 | 73.92 | 65.92 | 57.47 | 40.37 | 31.98 | 52.88 | ||||||||||||
1965 | 33.73 | 36.43 | 41.95 | 53.07 | a | 60.02 | 67.58 | 76.20 | a | 73.69 | 64.45 | 55.52 | 47.03 | 36.03 | 53.81 | |||||||||||
1966 | 30.06 | 32.93 | 46.00 | 53.52 | 64.85 | 71.42 | 79.21 | 75.18 | 65.36 | h | 55.86 | b | 45.82 | 32.13 | 53.36 | a | ||||||||||
1967 | 28.84 | 38.45 | 49.03 | 52.10 | a | 60.16 | c | 67.92 | 77.71 | 75.25 | a | 68.05 | 53.78 | a | 42.52 | 24.72 | a | 53.21 | ||||||||
1968 | 20.05 | 39.62 | 43.21 | 48.78 | ----- | z | ----- | z | 75.05 | b | 69.23 | 61.73 | 54.34 | 38.08 | 24.63 | 47.47 | b | |||||||||
1969 | 33.53 | a | 35.43 | 37.92 | a | 49.97 | 57.71 | 62.15 | 73.87 | 77.47 | a | 65.20 | 49.50 | 38.93 | 32.73 | 51.20 | ||||||||||
1970 | 30.55 | 38.39 | 38.34 | ----- | z | ----- | z | ----- | z | ----- | z | 74.42 | s | ----- | z | ----- | z | ----- | z | ----- | z | 35.76 | i | |||
1971 | 29.19 | e | 34.70 | 42.71 | 50.98 | 58.25 | c | 70.50 | a | 76.17 | d | 73.50 | a | 62.75 | 51.16 | 38.02 | 28.33 | a | 51.35 | |||||||
1972 | 30.08 | 36.98 | 47.71 | 53.12 | a | 60.88 | a | 69.86 | b | 76.55 | 73.45 | 65.17 | 55.06 | 38.27 | 26.03 | 52.76 | ||||||||||
1973 | 20.08 | a | 34.28 | c | 41.85 | 47.45 | a | 58.02 | b | 67.23 | ----- | z | ----- | z | 63.37 | 54.27 | a | 42.55 | a | 32.62 | a | 46.17 | b | |||
1974 | 24.93 | b | 27.04 | 48.82 | 49.65 | 64.11 | 73.05 | 74.74 | b | 71.73 | 64.53 | 54.63 | 40.45 | a | 29.67 | a | 51.95 | |||||||||
1975 | 25.85 | 34.38 | 42.63 | e | 48.76 | a | 53.12 | b | 64.98 | 73.50 | 71.21 | 63.42 | 53.19 | 36.80 | 29.19 | 49.75 | ||||||||||
1976 | 28.61 | 38.91 | 40.08 | 51.25 | 60.32 | a | 65.54 | b | 71.67 | a | 67.65 | 62.03 | 45.16 | 36.26 | g | 25.98 | b | 50.65 | a | |||||||
1977 | 21.68 | 32.31 | b | 37.34 | 50.64 | b | ----- | z | 71.94 | n | ----- | z | 74.28 | d | 68.26 | e | 55.25 | a | 41.79 | f | ----- | z | 48.54 | e | ||
1978 | 36.23 | 37.12 | 47.21 | q | ----- | z | ----- | z | 71.32 | 75.83 | a | 74.21 | 65.39 | b | ----- | z | ----- | z | 26.71 | 55.26 | e | |||||
1979 | 27.40 | 32.69 | a | 44.12 | a | 51.95 | ----- | z | ----- | z | 74.00 | b | 70.79 | n | 62.60 | a | 51.13 | 31.47 | a | ----- | z | 46.92 | d | |||
1980 | 32.06 | 35.88 | c | 39.32 | a | 47.68 | ----- | z | 64.08 | 70.31 | 65.47 | b | ----- | z | 53.33 | a | 40.92 | 36.77 | 48.58 | b | ||||||
1981 | 35.44 | 36.27 | 43.89 | 54.86 | a | 58.05 | a | 72.53 | 77.31 | 73.58 | a | 67.40 | 53.90 | b | 42.86 | b | 34.44 | 54.21 | ||||||||
1982 | 32.03 | a | 33.84 | 44.90 | b | 51.57 | 60.77 | a | 67.15 | ----- | z | 74.60 | a | 67.72 | 51.05 | b | 39.93 | b | 34.65 | 50.74 | a | |||||
1983 | 31.40 | b | 39.45 | 44.03 | b | 45.86 | a | 58.02 | 66.39 | g | 75.69 | d | 75.93 | d | 66.21 | f | 55.07 | b | 42.22 | 34.58 | a | 50.22 | b | |||
1984 | 29.21 | 34.26 | 42.44 | 49.34 | b | 64.80 | a | 68.91 | b | 75.87 | 75.00 | 67.57 | 50.15 | 41.19 | a | 35.66 | 52.87 | |||||||||
1985 | 31.66 | 34.41 | 45.53 | 44.75 | b | 61.60 | 70.02 | 75.85 | a | 72.92 | 62.70 | 53.81 | 41.38 | a | 31.60 | a | 52.19 | |||||||||
1986 | 35.57 | a | 41.15 | a | 48.00 | a | 54.40 | 61.68 | 72.16 | a | 73.94 | 75.26 | 63.89 | b | 51.15 | 42.12 | 33.03 | 54.36 | ||||||||
1987 | 29.70 | a | 38.33 | a | 41.05 | 53.03 | 60.08 | 69.88 | a | 71.16 | b | 72.82 | a | 62.52 | a | 52.23 | 40.17 | 29.63 | 51.72 | |||||||
1988 | 25.77 | 37.30 | a | 41.85 | 53.67 | g | 64.71 | g | 76.29 | a | 79.67 | a | 77.02 | a | 66.63 | 59.02 | 43.29 | a | 32.03 | a | 53.89 | b | ||||
1989 | 28.23 | 36.31 | g | 50.80 | a | 59.29 | a | 65.97 | 72.70 | 80.39 | 74.87 | a | 67.87 | c | 54.43 | a | 41.52 | b | 30.61 | 56.97 | a | |||||
1990 | 28.20 | a | 37.80 | a | 47.81 | 56.10 | a | 62.69 | d | 76.17 | 78.26 | h | 74.86 | c | 70.43 | a | 54.77 | 41.82 | e | 24.94 | d | 52.33 | a | |||
1991 | 26.38 | g | 38.54 | e | 44.12 | e | 52.75 | d | 63.21 | l | ----- | z | 77.90 | e | 75.85 | 67.84 | a | 55.81 | b | 40.09 | b | 27.28 | b | 53.35 | c | |
1992 | ----- | z | 38.32 | a | 47.40 | j | 57.52 | e | 63.04 | d | 70.10 | a | 75.08 | f | 73.72 | d | 66.06 | c | 57.11 | q | 34.92 | l | 25.15 | a | 56.27 | e |
1993 | 35.80 | d | 39.79 | g | 43.46 | r | 55.50 | i | 64.67 | g | 71.23 | 77.08 | 75.20 | d | 67.23 | 57.52 | j | 38.80 | g | 31.65 | h | 65.31 | g | |||
1994 | 34.12 | j | 38.05 | g | 48.16 | f | 54.95 | a | 65.09 | c | 76.48 | 80.83 | j | 79.79 | b | 68.29 | p | 55.50 | j | 41.29 | i | 35.12 | g | 69.08 | h | |
1995 | 36.96 | d | 44.29 | d | 48.71 | e | 51.83 | c | 61.60 | g | 70.17 | g | 76.28 | h | 79.02 | h | 71.88 | i | 54.68 | n | 45.22 | l | 35.47 | m | 45.45 | h |
1996 | 33.25 | i | 44.78 | k | 46.32 | n | 53.76 | k | 66.48 | g | 74.48 | c | 80.92 | g | 77.83 | e | 65.12 | q | 55.74 | l | 41.10 | j | 35.68 | f | 76.15 | j |
1997 | 33.72 | m | 37.44 | j | 50.38 | s | 49.85 | f | 65.43 | h | 72.46 | f | 76.29 | b | 74.84 | f | 70.00 | d | 55.55 | i | 42.26 | g | 31.52 | e | 59.27 | i |
1998 | 35.69 | d | 37.35 | a | 43.31 | b | 50.04 | c | 62.94 | d | 70.90 | d | 81.34 | f | 77.56 | d | 71.38 | d | ----- | z | 43.25 | l | ----- | z | 56.15 | d |
1999 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 73.89 | h | 77.37 | h | 74.76 | b | 65.26 | i | ----- | z | ----- | z | ----- | z | 74.76 | k |
2000 | 33.35 | n | 42.31 | h | 43.84 | l | 57.65 | m | 67.40 | k | ----- | z | ----- | z | 78.20 | k | 68.73 | h | 54.85 | g | 35.21 | f | 32.74 | f | ----- | z |
2001 | 32.29 | l | 40.45 | q | ----- | z | 57.06 | v | 65.35 | d | 73.48 | b | 80.48 | h | 76.12 | c | 70.39 | h | 58.19 | o | 42.11 | u | 28.46 | r | 71.65 | i |
2002 | 33.58 | s | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2003 | ----- | z | ----- | z | 49.62 | w | 55.21 | m | 65.34 | l | 74.46 | e | ----- | z | 79.73 | c | 67.74 | e | 59.96 | f | 44.02 | f | 35.71 | g | 73.98 | i |
2004 | ----- | z | 36.04 | p | 52.02 | k | 56.20 | j | 67.23 | g | 73.70 | j | 76.74 | n | 74.71 | l | 68.23 | h | 55.92 | e | 41.94 | l | 32.47 | n | 55.92 | k |
2005 | ----- | z | 41.25 | b | 45.27 | g | 54.30 | c | 64.58 | g | 70.56 | f | 81.42 | f | 75.32 | f | 68.62 | 57.23 | i | 46.76 | g | 31.56 | n | 54.72 | i | |
2006 | 34.85 | r | 39.15 | h | 45.74 | l | 59.05 | k | 67.39 | c | 77.33 | g | 81.63 | d | 75.98 | f | 64.20 | g | 54.70 | d | 45.11 | l | 32.89 | q | 67.91 | i |
2007 | 29.65 | n | 39.79 | i | 49.05 | k | 55.22 | l | 64.98 | i | 76.12 | n | 81.14 | m | 79.15 | n | 67.85 | q | 57.55 | j | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 29.55 | 36.10 | 43.55 | 52.33 | 61.62 | 70.66 | 76.62 | 74.64 | 66.47 | 54.17 | 40.55 | 30.32 | 52.74 | |||||||||||||
S.D. | 4.64 | 3.65 | 3.35 | 3.14 | 3.11 | 3.16 | 2.31 | 2.36 | 2.40 | 3.13 | 3.20 | 4.12 | 1.25 | |||||||||||||
SKEW | -0.93 | -0.48 | 0.40 | -0.03 | 0.23 | -0.22 | -0.39 | -1.11 | -0.05 | -1.23 | -0.60 | -0.77 | -0.03 | |||||||||||||
MAX | 36.96 | 44.29 | 53.42 | 59.29 | 71.07 | 76.48 | 81.63 | 79.79 | 71.38 | 61.27 | 47.03 | 36.77 | 55.46 | |||||||||||||
MIN | 15.87 | 26.58 | 37.34 | 44.75 | 53.12 | 62.15 | 70.31 | 65.47 | 61.73 | 41.44 | 31.47 | 16.66 | 49.75 | |||||||||||||
YRS | 63 | 63 | 60 | 60 | 56 | 56 | 53 | 64 | 60 | 60 | 54 | 58 | 30 |