YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1924 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 62.90 | e | 49.33 | m | 37.11 | c | 21.37 | 40.46 | i | |
1925 | 25.23 | 38.02 | 43.67 | a | 50.22 | a | 61.05 | 63.43 | 76.35 | 71.35 | a | 61.71 | a | 49.61 | 37.33 | 33.97 | 51.00 | |||||||||
1926 | 26.21 | 36.43 | 42.61 | 53.80 | 58.92 | 69.93 | 75.47 | 72.95 | 59.27 | 52.78 | a | 43.75 | 27.56 | 51.64 | ||||||||||||
1927 | 29.05 | b | 35.63 | b | 40.28 | a | 47.29 | a | 53.57 | a | 68.02 | 75.87 | a | 71.50 | 62.37 | 53.11 | 46.25 | h | ----- | z | 53.67 | b | ||||
1928 | ----- | z | 33.72 | 43.82 | 47.23 | 61.70 | d | 63.70 | b | 75.27 | 71.29 | 64.69 | a | 51.47 | 39.57 | b | 23.82 | 52.39 | a | |||||||
1929 | 21.73 | 23.70 | 37.60 | b | 45.55 | 57.16 | b | 65.25 | 76.21 | 75.21 | 59.62 | b | 52.77 | 35.50 | 35.65 | 48.83 | ||||||||||
1930 | 19.32 | 36.95 | 41.60 | 55.45 | 55.10 | 65.78 | 75.61 | 72.68 | 62.72 | a | 48.16 | 33.10 | 17.31 | 48.65 | ||||||||||||
1931 | 18.26 | 31.82 | 39.77 | 50.03 | 57.89 | c | 71.91 | a | 79.95 | 76.98 | 64.66 | a | 54.19 | 35.25 | b | 24.12 | b | 50.40 | ||||||||
1932 | 17.81 | b | 27.26 | 37.66 | 49.73 | b | 58.90 | b | 65.90 | 73.89 | 72.32 | 65.10 | 49.87 | 42.00 | a | 19.77 | 48.35 | |||||||||
1933 | 24.72 | b | 19.73 | b | 37.03 | 47.07 | c | 53.66 | 73.67 | 79.21 | 73.58 | 65.42 | 56.71 | 40.35 | 36.58 | 50.64 | ||||||||||
1934 | 33.55 | a | 41.07 | 48.92 | 56.82 | 66.68 | 68.32 | 78.02 | 76.05 | 62.17 | 54.58 | 42.40 | 30.71 | 54.94 | ||||||||||||
1935 | 31.34 | 34.71 | 40.10 | 50.50 | 55.40 | 69.12 | 77.05 | 75.26 | 67.33 | 51.13 | 35.27 | b | 30.02 | a | 51.44 | |||||||||||
1936 | 27.05 | 31.81 | 40.05 | a | 52.48 | 61.76 | 69.98 | 77.35 | 74.16 | 62.33 | 52.69 | 36.02 | 33.10 | 51.57 | ||||||||||||
1937 | 13.19 | 27.88 | 39.32 | 45.70 | 60.74 | 64.52 | a | 76.18 | a | 75.34 | 67.33 | 54.74 | 43.20 | 34.95 | 50.26 | |||||||||||
1938 | 35.29 | 37.12 | 40.87 | 50.83 | 56.26 | 69.30 | 72.95 | 73.37 | 68.38 | 54.16 | ----- | z | 33.85 | 53.85 | a | |||||||||||
1939 | 29.45 | 23.79 | 40.50 | 52.95 | 61.23 | 64.63 | 75.37 | 73.32 | 62.98 | 52.55 | 41.80 | 34.68 | 51.10 | |||||||||||||
1940 | 29.37 | 37.76 | 44.58 | 51.15 | 63.16 | 71.02 | 76.32 | 75.10 | 64.63 | 54.37 | 35.75 | 32.23 | 52.95 | |||||||||||||
1941 | 28.76 | 36.50 | 43.32 | 46.02 | 60.06 | 63.95 | 72.94 | 71.19 | 58.52 | 49.95 | 40.10 | 33.53 | 50.40 | |||||||||||||
1942 | 20.03 | 24.30 | 34.79 | 51.50 | 53.77 | 63.75 | 79.12 | a | 73.97 | 64.38 | 52.79 | 40.43 | 32.15 | 49.25 | ||||||||||||
1943 | 32.02 | 34.48 | 39.58 | 55.23 | 56.76 | 64.12 | 73.95 | 74.13 | 66.22 | a | 55.08 | a | 40.17 | 31.71 | b | 51.95 | ||||||||||
1944 | 19.50 | 29.54 | a | 37.21 | 46.62 | ----- | z | 60.95 | a | 71.24 | 69.87 | ----- | z | 54.31 | 38.59 | b | ----- | z | 47.54 | c | ||||||
1945 | ----- | z | ----- | z | 37.77 | 44.24 | a | 56.55 | 56.22 | 72.78 | a | 68.75 | a | 56.53 | a | 52.17 | a | 33.75 | b | 38.33 | v | 53.20 | c | |||
1946 | 25.85 | 32.32 | 42.08 | 53.05 | 55.73 | 66.21 | a | 75.62 | b | 73.65 | d | 59.70 | b | 45.53 | 36.80 | 35.53 | a | 50.17 | ||||||||
1947 | 20.03 | 35.18 | 42.15 | 47.33 | 61.15 | 62.55 | 74.97 | 70.40 | a | 64.33 | 54.23 | 34.20 | 28.27 | 49.57 | ||||||||||||
1948 | 28.17 | a | 30.48 | 35.13 | 49.41 | a | 57.85 | a | 67.27 | 73.94 | 73.45 | 64.52 | 52.34 | 35.10 | 24.94 | 49.38 | ||||||||||
1949 | 11.48 | 22.27 | b | 40.27 | 52.52 | 60.33 | b | 65.30 | 74.16 | 73.34 | 65.42 | 47.74 | 44.45 | 31.23 | 49.04 | |||||||||||
1950 | 27.78 | b | 36.02 | a | 40.03 | 48.20 | 53.76 | 65.22 | 73.12 | n | 72.56 | 62.98 | 57.23 | 41.70 | 35.58 | 49.19 | a | |||||||||
1951 | 27.13 | 35.12 | 37.34 | 51.72 | 58.74 | b | 63.52 | 74.87 | 71.98 | 63.52 | 50.77 | 37.50 | 27.79 | 50.00 | ||||||||||||
1952 | 27.34 | 27.03 | 33.40 | 52.27 | 60.45 | 68.23 | 73.69 | 74.53 | 67.42 | 56.68 | 35.33 | 31.00 | g | 52.40 | a | |||||||||||
1953 | 38.52 | 36.62 | 43.98 | a | 47.20 | 53.74 | 66.23 | 76.63 | a | 74.74 | 66.80 | 53.56 | 45.20 | 30.06 | 52.78 | |||||||||||
1954 | 33.42 | 35.50 | 39.82 | 53.52 | 60.92 | 64.93 | 76.60 | 71.18 | 64.27 | 54.27 | 45.79 | a | ----- | z | 54.57 | a | ||||||||||
1955 | 20.02 | b | 23.02 | c | 34.79 | b | 44.21 | a | 57.32 | c | 64.35 | 73.85 | a | 74.95 | 63.68 | 52.87 | a | 34.98 | 35.03 | 48.26 | ||||||
1956 | 34.15 | 25.24 | b | 40.10 | b | 49.61 | b | 59.27 | a | 68.10 | 74.87 | a | 70.45 | c | 64.62 | b | 49.98 | f | 34.46 | b | 29.37 | a | 50.02 | a | ||
1957 | 23.78 | b | 38.89 | 42.72 | b | 47.35 | 57.05 | a | 65.42 | 74.97 | a | 75.13 | 63.09 | b | 51.95 | 34.33 | 33.19 | 50.66 | ||||||||
1958 | 28.58 | 40.57 | 38.95 | a | 47.17 | 64.87 | 69.62 | 74.29 | b | 76.40 | 65.57 | 55.00 | 39.15 | 36.66 | 53.07 | |||||||||||
1959 | 34.15 | 35.86 | 41.70 | a | 52.03 | a | 56.17 | b | 71.73 | 76.35 | 72.89 | 62.05 | 53.15 | a | 39.02 | a | 30.16 | 52.11 | ||||||||
1960 | 25.58 | 29.26 | 42.56 | 51.32 | 59.47 | 71.22 | 79.77 | a | 72.37 | d | 67.78 | 53.48 | 42.37 | 32.41 | b | 52.30 | ||||||||||
1961 | 30.66 | 38.12 | 41.53 | 49.13 | 60.60 | 73.80 | 78.82 | 77.60 | 59.83 | 51.24 | 36.58 | 30.10 | 52.34 | |||||||||||||
1962 | 22.74 | 31.27 | 36.93 | a | 53.22 | 57.92 | 66.98 | 74.26 | 73.55 | 66.95 | 56.19 | 43.32 | 31.94 | 51.27 | ||||||||||||
1963 | 23.50 | 40.50 | 41.45 | 46.05 | 62.03 | 63.85 | 76.48 | 76.44 | 67.15 | 58.05 | 39.87 | 25.85 | a | 51.77 | ||||||||||||
1964 | 21.97 | 23.43 | 32.95 | 47.03 | 56.87 | 63.17 | 76.69 | 71.69 | 62.85 | 54.30 | a | 39.18 | 34.73 | 48.74 | ||||||||||||
1965 | 32.26 | 35.13 | a | 38.21 | 50.62 | d | 55.08 | a | 65.31 | a | 74.16 | 70.90 | 56.68 | 54.68 | 45.18 | 30.47 | 50.72 | |||||||||
1966 | 30.02 | 28.88 | 41.77 | 49.42 | 62.21 | 68.42 | 77.82 | 73.03 | 66.90 | 50.55 | 43.28 | 28.97 | 51.77 | |||||||||||||
1967 | 30.35 | 36.70 | 44.90 | 46.60 | 56.92 | 63.68 | 76.68 | 77.37 | 65.80 | 53.81 | 43.00 | 25.63 | 51.79 | |||||||||||||
1968 | 23.69 | 36.41 | 44.65 | 45.90 | 57.11 | 67.00 | 77.02 | 68.18 | 61.65 | 51.63 | 38.62 | 29.69 | 50.13 | |||||||||||||
1969 | 31.03 | a | 28.39 | a | 35.63 | 51.98 | 63.98 | 64.95 | 76.08 | 75.84 | 66.69 | a | 46.20 | a | 38.28 | 30.50 | 50.80 | |||||||||
1970 | 32.40 | a | 37.77 | 38.81 | 42.57 | 56.65 | 66.55 | 73.87 | 75.11 | 56.65 | 45.34 | 39.67 | 31.29 | g | 51.40 | a | ||||||||||
1971 | 28.37 | e | 33.94 | j | 37.09 | c | 47.26 | e | 55.67 | b | 65.33 | 74.82 | 74.68 | 58.20 | 46.35 | 36.55 | 24.03 | 49.85 | a | |||||||
1972 | 28.35 | 33.19 | 44.24 | 46.77 | 58.61 | 68.70 | 73.40 | a | 72.93 | b | 58.91 | a | 51.48 | b | 36.25 | 20.23 | 49.42 | |||||||||
1973 | 18.79 | 28.86 | 38.56 | 45.97 | k | 60.26 | ----- | z | 75.15 | 73.29 | 60.73 | f | 51.63 | a | 38.45 | 32.15 | a | 46.35 | c | |||||||
1974 | 25.55 | 28.18 | 42.82 | 47.07 | 59.29 | 71.15 | 76.88 | b | 71.58 | 64.85 | 53.43 | a | 39.82 | 29.50 | 50.84 | |||||||||||
1975 | 24.03 | 32.68 | 40.03 | 43.92 | 53.16 | 63.78 | 78.24 | 71.39 | 63.94 | c | 50.29 | 36.28 | e | 30.79 | g | 50.70 | a | |||||||||
1976 | 26.00 | 29.67 | 35.56 | 50.21 | a | 63.23 | 66.62 | b | 76.77 | g | 71.15 | 66.75 | 50.92 | 41.97 | 28.29 | 48.22 | a | |||||||||
1977 | 23.16 | 34.28 | c | 36.35 | 52.98 | 54.85 | 73.00 | a | 75.60 | 73.48 | 64.72 | 53.60 | 40.85 | 36.84 | 51.64 | |||||||||||
1978 | 35.87 | a | 38.17 | a | 47.84 | 50.27 | 56.27 | 67.33 | 75.18 | 71.13 | 60.97 | 54.08 | 36.02 | 27.06 | 51.68 | |||||||||||
1979 | 20.37 | 30.80 | 41.37 | 49.37 | 59.73 | 69.95 | 75.65 | 72.10 | 67.18 | 53.98 | 32.57 | 29.48 | a | 50.21 | ||||||||||||
1980 | 29.95 | 35.10 | 39.47 | b | 51.13 | 56.35 | 66.82 | 76.27 | 72.10 | 64.22 | 52.03 | a | 40.36 | a | 32.81 | 51.38 | ||||||||||
1981 | 29.53 | 36.06 | b | 42.27 | 53.17 | 56.31 | 68.97 | 76.11 | 75.11 | 65.90 | 48.77 | 42.48 | 34.55 | 52.44 | ||||||||||||
1982 | 26.69 | e | 28.65 | a | 40.48 | b | 45.30 | b | 55.71 | c | 66.80 | b | 72.20 | d | 74.72 | a | 60.96 | c | 47.37 | d | 37.71 | a | 31.05 | b | 48.97 | |
1983 | 34.90 | e | 37.65 | d | 43.92 | f | 45.17 | d | 55.47 | 65.88 | d | 75.12 | b | 74.11 | d | 65.13 | c | 53.67 | a | 40.50 | e | 27.08 | f | 54.76 | b | |
1984 | 21.07 | b | 22.19 | 36.35 | a | 46.44 | d | 60.48 | c | 63.85 | d | 74.53 | b | 74.02 | b | 63.24 | a | 46.82 | f | 39.86 | b | 24.33 | b | 47.85 | a | |
1985 | 19.64 | c | 22.52 | b | 35.63 | 54.89 | b | 62.16 | 70.63 | 78.15 | a | 73.95 | 60.62 | 51.40 | a | 34.38 | a | 25.55 | 49.13 | |||||||
1986 | 26.50 | 40.09 | a | 48.19 | 49.45 | a | 58.03 | 74.03 | 74.65 | 77.34 | 58.57 | b | 52.14 | c | 40.55 | a | 29.71 | 52.44 | ||||||||
1987 | 26.50 | 35.76 | e | 42.60 | e | 56.38 | d | 61.50 | e | 69.88 | d | 72.20 | d | 71.93 | b | 65.24 | c | 55.07 | a | 40.39 | b | 31.28 | a | 52.40 | ||
1988 | 25.83 | b | 31.58 | c | 40.59 | d | 52.09 | b | 59.12 | f | 73.30 | b | 78.29 | e | 74.58 | 64.67 | 59.36 | b | 39.30 | c | 26.95 | a | 51.50 | a | ||
1989 | 19.30 | c | 24.54 | a | 44.93 | a | 54.86 | e | 59.09 | c | 68.18 | b | 79.21 | c | 74.21 | b | 66.77 | b | 52.45 | b | 40.19 | a | 30.96 | d | 51.22 | |
1990 | 31.23 | a | 34.93 | a | 46.52 | a | 54.91 | b | 57.82 | f | ----- | z | 78.02 | e | 74.87 | a | 69.06 | c | 51.89 | h | 39.44 | d | 20.46 | c | 49.94 | c |
1991 | 22.74 | b | 33.93 | e | 41.90 | f | 46.48 | g | 53.29 | g | 67.36 | i | 77.11 | d | 75.98 | g | 63.11 | g | 51.75 | g | 38.96 | e | 27.82 | c | 40.11 | g |
1992 | 23.94 | e | 38.39 | f | 47.92 | e | 57.30 | g | 64.74 | f | 69.12 | j | 72.67 | g | 76.44 | g | 64.73 | f | 54.33 | j | 32.26 | g | 27.89 | h | 35.93 | j |
1993 | 22.83 | d | 27.09 | e | 40.42 | e | 47.74 | g | 62.06 | f | 62.42 | k | 67.46 | g | 71.48 | h | 62.04 | f | 51.50 | i | 32.96 | e | 30.84 | b | 30.83 | g |
1994 | 35.90 | e | 33.27 | f | 45.06 | g | 51.50 | i | 63.34 | f | 71.87 | c | 79.84 | c | 78.02 | i | 67.64 | l | 48.98 | h | 31.68 | e | 31.21 | g | 54.82 | h |
1995 | 30.32 | f | 42.91 | f | 43.90 | g | 51.81 | l | 57.90 | f | 64.44 | e | 74.62 | e | 75.38 | g | 66.33 | g | 50.95 | k | 44.17 | g | 33.17 | h | 69.53 | j |
1996 | 31.12 | f | ----- | z | 44.41 | c | 50.72 | a | 59.89 | h | 71.48 | f | 78.19 | d | 75.54 | d | 62.95 | h | 52.56 | e | 41.61 | b | 34.80 | a | 53.97 | e |
1997 | 29.72 | h | 33.60 | g | 43.45 | k | 46.46 | g | 63.04 | d | 69.28 | g | 74.82 | i | 75.10 | b | 66.98 | g | 50.30 | h | 40.25 | h | 25.22 | f | 69.07 | j |
1998 | ----- | z | 37.45 | h | 39.79 | g | 48.75 | f | 58.48 | h | 63.00 | i | 77.37 | e | 76.33 | e | 68.11 | c | 51.90 | f | 41.69 | c | 27.63 | e | 58.22 | g |
1999 | 34.23 | e | 36.58 | h | 44.89 | l | 46.12 | d | 58.07 | h | 69.46 | d | 77.40 | e | ----- | z | 63.85 | f | 54.81 | b | 46.18 | b | 32.78 | b | 51.57 | e |
2000 | 36.00 | c | 40.30 | b | 43.02 | f | 54.55 | h | 62.48 | e | 72.67 | d | 79.23 | c | 78.07 | d | 63.76 | i | 53.09 | h | 32.81 | d | 31.46 | e | 54.13 | d |
2001 | 29.27 | a | 35.02 | b | 46.73 | e | 52.58 | e | 63.17 | g | 69.73 | h | 78.19 | g | 78.04 | d | 70.45 | j | 52.45 | j | 42.33 | g | 26.56 | d | 44.70 | f |
2002 | ----- | z | 28.19 | b | 42.64 | i | 50.94 | f | 61.06 | g | 73.55 | i | 81.52 | f | 73.38 | f | 66.47 | k | 49.50 | g | 36.84 | e | 32.96 | g | 32.52 | j |
2003 | 38.91 | h | 34.12 | g | 43.05 | j | 51.35 | j | ----- | z | 69.64 | h | 79.79 | e | 77.05 | k | 62.39 | k | 55.19 | j | 33.21 | f | 32.54 | g | 79.79 | k |
2004 | 21.54 | g | 27.09 | g | 45.57 | b | 52.55 | i | 59.39 | h | 71.35 | d | 77.56 | e | 72.88 | f | 62.75 | h | 54.74 | l | 37.55 | j | 31.93 | h | 64.82 | i |
2005 | 33.86 | j | 34.73 | d | 42.14 | i | 48.33 | j | 59.64 | i | 66.53 | j | ----- | z | ----- | z | 65.37 | g | 53.67 | k | 38.47 | k | 31.36 | j | 34.73 | k |
2006 | 34.28 | f | 34.60 | c | 42.93 | i | 52.60 | i | 63.17 | j | 72.08 | j | 84.41 | i | 78.40 | g | 64.50 | f | 48.95 | l | 39.90 | j | 28.79 | g | 34.60 | k |
2007 | 19.62 | j | 32.32 | i | 43.71 | j | ----- | z | 63.07 | h | 74.41 | m | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2008 | ----- | z | ----- | z | 42.23 | p | 47.92 | d | 58.36 | c | ----- | z | ----- | z | ----- | z | 66.03 | 53.03 | 44.00 | m | 29.43 | b | 50.96 | g | ||
2009 | 29.53 | b | 33.66 | 41.47 | l | ----- | z | 62.81 | 67.86 | w | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 42.00 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 26.70 | 32.43 | 40.70 | 49.69 | 58.65 | 67.26 | 76.00 | 73.63 | 63.73 | 52.52 | 38.84 | 29.88 | 50.87 | |||||||||||||
S.D. | 5.64 | 5.33 | 3.67 | 3.37 | 3.10 | 3.47 | 2.03 | 2.16 | 3.07 | 2.85 | 3.50 | 4.42 | 1.44 | |||||||||||||
SKEW | -0.24 | -0.52 | 0.12 | 0.09 | 0.23 | -0.09 | 0.06 | -0.08 | -0.61 | -0.50 | 0.01 | -0.71 | 0.16 | |||||||||||||
MAX | 38.52 | 41.07 | 48.92 | 56.82 | 66.68 | 74.03 | 79.95 | 78.07 | 69.06 | 59.36 | 46.18 | 36.84 | 54.94 | |||||||||||||
MIN | 11.48 | 19.73 | 32.95 | 42.57 | 53.16 | 56.22 | 71.24 | 68.18 | 56.53 | 45.34 | 31.68 | 17.31 | 48.26 | |||||||||||||
YRS | 72 | 72 | 70 | 69 | 67 | 69 | 73 | 71 | 67 | 66 | 73 | 67 | 48 |