YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1929 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 63.80 | y | 53.29 | 41.28 | 37.61 | 44.06 | i | |||
1930 | 24.89 | 36.36 | 38.40 | 52.10 | a | 52.00 | 65.55 | 69.65 | 67.63 | 60.55 | 47.81 | 34.55 | 25.31 | 47.90 | ||||||||||||
1931 | 24.02 | 36.23 | 38.10 | 48.37 | 55.73 | 64.27 | d | ----- | z | 71.03 | o | 65.93 | 52.56 | 34.43 | 18.85 | a | 43.85 | b | ||||||||
1932 | 19.53 | a | 36.25 | a | 39.06 | 48.05 | a | 54.66 | 64.30 | 72.06 | 71.66 | 61.32 | 48.45 | 39.23 | 20.63 | 47.93 | ||||||||||
1933 | 19.22 | a | 21.36 | 41.53 | 41.50 | 51.11 | 67.50 | 71.52 | h | 70.89 | 66.48 | 54.11 | 40.20 | 35.31 | 46.29 | a | ||||||||||
1934 | 32.24 | 39.27 | 45.66 | 51.88 | 61.48 | 63.63 | 74.39 | 71.53 | 61.08 | 54.00 | b | 39.09 | c | ----- | z | 54.02 | a | |||||||||
1935 | 31.55 | 35.48 | 38.56 | 47.03 | 51.39 | 65.57 | 71.29 | e | 69.58 | 61.08 | 50.63 | 36.88 | 30.34 | 49.12 | ||||||||||||
1936 | 28.73 | 33.95 | 38.94 | 49.17 | 59.98 | 68.43 | 72.29 | 70.40 | 60.80 | 50.52 | 38.18 | 31.44 | 50.24 | |||||||||||||
1937 | 14.31 | 31.22 | a | 38.74 | 46.50 | 60.66 | 63.82 | 69.42 | 71.50 | c | 63.88 | 53.32 | 44.13 | 32.20 | d | 49.14 | ||||||||||
1938 | 32.29 | 32.98 | 39.37 | a | 47.62 | a | 54.82 | a | 65.75 | 69.00 | 71.43 | a | 61.26 | c | ----- | z | ----- | z | ----- | z | 52.72 | c | ||||
1939 | ----- | z | ----- | z | ----- | z | 49.64 | b | 57.47 | 64.17 | a | 71.32 | 70.10 | 66.03 | 51.37 | a | 42.45 | 34.90 | a | 56.38 | c | |||||
1940 | 29.53 | a | 34.05 | 42.50 | a | 47.28 | a | 58.52 | 66.87 | 71.92 | a | 69.21 | 62.59 | a | 52.33 | a | 36.83 | a | 34.19 | 50.48 | ||||||
1941 | 33.98 | i | 38.21 | 40.48 | 42.23 | 55.03 | 63.16 | b | 67.85 | h | 66.03 | 58.07 | 48.11 | 38.52 | 32.50 | 48.24 | b | |||||||||
1942 | 26.79 | 27.36 | 33.58 | 46.31 | a | 52.00 | 61.24 | a | 69.81 | 66.74 | 59.52 | 50.39 | 41.30 | 34.03 | a | 47.42 | ||||||||||
1943 | 31.21 | 34.98 | g | 41.02 | 50.68 | 54.73 | 64.47 | 70.60 | 69.89 | c | 62.05 | 53.18 | 39.85 | 31.02 | a | 51.70 | a | |||||||||
1944 | 25.33 | a | 32.41 | 36.33 | a | 44.73 | j | 53.63 | a | 59.90 | 68.37 | a | 68.85 | 62.88 | b | 55.84 | 37.25 | d | 28.58 | 48.13 | a | |||||
1945 | 27.34 | 35.96 | 36.69 | 44.07 | 54.02 | 60.28 | 70.92 | 70.37 | 60.62 | 51.77 | 37.54 | b | 19.44 | 47.42 | ||||||||||||
1946 | 22.23 | 31.12 | 39.57 | a | 51.93 | 52.58 | 64.75 | 69.76 | 67.66 | 61.95 | 46.94 | 35.77 | 33.71 | 48.16 | ||||||||||||
1947 | 22.79 | 36.04 | 40.31 | 45.22 | 57.23 | 60.90 | 70.53 | 66.81 | 63.27 | 50.90 | 30.20 | 24.48 | 47.39 | |||||||||||||
1948 | 29.98 | 29.55 | 32.95 | 49.58 | 58.03 | 63.83 | 70.26 | b | 68.73 | 63.60 | 51.37 | 33.73 | 32.47 | 48.67 | ||||||||||||
1949 | 20.84 | 27.12 | 39.66 | 49.12 | 56.50 | 64.87 | 71.03 | 69.03 | 64.60 | 47.77 | 43.62 | 24.37 | 48.21 | |||||||||||||
1950 | 29.13 | 36.50 | 38.53 | 48.10 | 53.29 | 63.55 | 69.39 | 66.10 | 58.35 | 56.19 | 40.52 | 34.46 | e | 49.51 | ||||||||||||
1951 | 28.21 | 33.02 | 36.58 | 46.35 | 56.11 | 61.90 | 73.19 | 67.81 | 60.67 | 48.73 | 35.17 | 26.63 | 47.86 | |||||||||||||
1952 | 29.26 | 31.19 | 32.76 | 47.48 | 56.23 | 64.33 | 69.19 | 68.92 | 61.00 | 52.55 | 31.09 | a | 26.15 | 47.51 | ||||||||||||
1953 | 33.08 | 31.38 | 39.25 | a | 45.53 | 50.78 | d | 65.75 | 71.55 | 66.77 | 61.92 | 49.24 | 38.07 | 25.39 | 48.23 | |||||||||||
1954 | 32.26 | 37.50 | 36.76 | 51.74 | a | 58.13 | 64.18 | 71.53 | 66.10 | 62.24 | a | 51.42 | 40.33 | a | 28.32 | 50.04 | ||||||||||
1955 | 23.69 | 24.43 | a | 38.58 | 43.90 | 51.55 | 61.90 | 69.05 | a | 68.84 | 62.61 | c | 51.84 | 36.73 | 35.02 | a | 47.34 | |||||||||
1956 | 35.39 | 26.97 | 36.10 | k | 43.14 | a | 57.71 | 67.68 | 68.27 | 64.73 | 62.59 | b | 50.05 | 30.38 | 26.98 | 48.54 | a | |||||||||
1957 | 31.07 | a | 39.43 | 38.71 | 44.25 | 51.34 | 64.33 | a | 68.92 | 67.05 | 59.78 | 48.39 | 32.92 | 32.73 | 48.24 | |||||||||||
1958 | 28.08 | 37.07 | 35.24 | 43.79 | a | 58.60 | 65.40 | a | 70.31 | 70.45 | 61.08 | 50.24 | 36.43 | 34.21 | 49.24 | |||||||||||
1959 | 30.56 | 32.91 | 36.90 | 48.37 | 53.94 | 67.03 | 71.92 | 67.02 | a | 60.10 | 48.56 | 36.52 | 30.95 | 48.73 | ||||||||||||
1960 | 22.79 | 28.38 | 41.12 | a | 45.88 | 54.37 | 65.90 | 71.61 | 69.12 | a | 62.82 | 47.65 | 39.60 | 25.11 | 47.86 | |||||||||||
1961 | 27.18 | 33.14 | 38.80 | c | 45.61 | g | 54.47 | a | 66.73 | 70.95 | 67.89 | 57.33 | 48.35 | 35.80 | 23.63 | 47.66 | a | |||||||||
1962 | 20.84 | 31.87 | a | 34.68 | 49.92 | 53.73 | 63.00 | 69.34 | 68.98 | 62.02 | 50.94 | 42.67 | 31.45 | a | 48.29 | |||||||||||
1963 | 22.19 | 35.88 | 38.61 | 45.08 | 58.26 | 62.97 | 72.76 | 67.15 | 63.52 | 54.19 | 39.28 | 26.61 | 48.87 | |||||||||||||
1964 | 25.35 | 25.52 | 32.52 | a | 41.52 | 55.21 | 61.77 | 71.81 | 66.56 | 59.80 | 52.79 | 33.77 | 31.08 | 46.47 | ||||||||||||
1965 | 31.00 | 29.30 | 35.63 | a | 45.10 | 51.82 | 60.33 | 69.60 | 68.66 | l | 57.48 | 51.03 | 42.65 | 33.05 | 46.09 | a | ||||||||||
1966 | 26.55 | 27.02 | 39.71 | 47.28 | 59.45 | 64.72 | 72.13 | 69.05 | 61.68 | 49.19 | 42.50 | 29.05 | 49.03 | |||||||||||||
1967 | 24.57 | a | 34.89 | 43.03 | 44.37 | 53.82 | l | 62.22 | 71.68 | 67.24 | 61.03 | 50.32 | 40.80 | 21.28 | a | 47.40 | a | |||||||||
1968 | 22.62 | a | 36.88 | 39.76 | 43.22 | 54.10 | 64.48 | 69.47 | 64.11 | 59.40 | 50.66 | 36.92 | 23.42 | a | 47.09 | |||||||||||
1969 | 31.47 | a | 32.12 | 33.89 | 47.35 | 56.95 | 62.77 | b | ----- | z | 69.76 | l | 64.75 | 48.48 | a | 38.10 | 33.98 | 44.99 | b | |||||||
1970 | 28.58 | 37.12 | 35.55 | a | 40.55 | 54.93 | a | 64.26 | a | 72.74 | b | 72.98 | a | 59.80 | 46.83 | a | 40.63 | 32.02 | 48.83 | |||||||
1971 | 29.53 | 31.43 | a | 39.18 | 45.98 | 53.67 | a | 66.05 | 74.03 | 70.73 | 61.85 | 47.56 | 37.72 | a | 25.97 | 48.64 | ||||||||||
1972 | 30.53 | 35.43 | 46.13 | 48.48 | 55.94 | 65.17 | 73.84 | 70.00 | 63.02 | 53.44 | 33.90 | 26.02 | 50.16 | |||||||||||||
1973 | 23.73 | 32.38 | 35.52 | 43.66 | a | 55.45 | 64.20 | 71.11 | 70.26 | 60.40 | 52.39 | 39.60 | 32.19 | 48.41 | ||||||||||||
1974 | 28.64 | b | 29.66 | 43.47 | 46.05 | 57.75 | k | 68.74 | a | 67.92 | 64.57 | b | 58.82 | 51.56 | 38.70 | 27.55 | 47.79 | a | ||||||||
1975 | 26.11 | 31.16 | 36.92 | 42.25 | 51.67 | a | 62.77 | 71.18 | 68.79 | 62.36 | a | 51.67 | b | 36.90 | 28.43 | a | 47.52 | |||||||||
1976 | 27.42 | 37.67 | 36.88 | a | 46.50 | 57.06 | 65.16 | a | 71.27 | a | 68.81 | 62.60 | 48.21 | 40.04 | e | 29.45 | 49.26 | |||||||||
1977 | 24.29 | b | 34.07 | 35.87 | 48.27 | 53.63 | 68.05 | 71.44 | 70.95 | 64.25 | ----- | z | ----- | z | 34.98 | i | 52.31 | c | ||||||||
1978 | 32.02 | j | 35.33 | j | 43.39 | h | 49.23 | j | 53.73 | i | 66.14 | h | 71.78 | k | 69.54 | h | 61.20 | j | 54.83 | j | 39.98 | b | 26.15 | a | 33.07 | j |
1979 | 23.19 | 29.77 | 38.05 | 46.70 | b | 54.55 | 63.50 | a | 70.38 | g | 67.48 | i | 66.85 | j | 54.73 | i | 34.29 | k | 33.83 | k | 42.63 | f | ||||
1980 | 31.26 | j | 37.58 | j | 37.50 | m | 44.88 | i | 52.61 | m | 65.65 | m | 71.84 | l | 69.29 | q | 62.44 | l | 48.00 | o | 39.00 | l | 37.55 | j | ----- | z |
1981 | 33.95 | k | 35.42 | j | 39.55 | i | 51.26 | i | 55.86 | q | 67.32 | k | 72.25 | o | 70.38 | k | 63.72 | 50.58 | 42.38 | 32.42 | 47.28 | h | ||||
1982 | 27.80 | a | 33.04 | e | 39.64 | c | 47.45 | b | 53.50 | 62.57 | 70.95 | c | 70.85 | a | 64.45 | a | 48.52 | c | 38.64 | e | 35.64 | f | 50.67 | a | ||
1983 | 33.40 | a | 33.92 | b | 38.38 | b | 40.36 | b | 51.63 | 61.33 | 69.91 | d | 69.33 | b | 64.71 | b | 51.79 | c | 38.22 | c | 31.79 | e | 48.73 | |||
1984 | 28.47 | b | 29.77 | c | 38.55 | 42.82 | 59.02 | c | 63.61 | b | 70.62 | a | 68.12 | b | 62.39 | b | 44.02 | e | 38.44 | d | ----- | z | 49.62 | a | ||
1985 | 29.12 | a | 30.10 | g | 38.91 | b | 47.83 | d | 56.02 | f | 65.75 | f | 71.57 | a | 69.38 | a | 57.98 | d | 52.16 | c | 34.97 | k | 30.90 | f | 52.42 | e |
1986 | 36.48 | j | 36.42 | j | 41.98 | j | 47.45 | i | 54.29 | j | 65.83 | i | 70.05 | i | 71.02 | j | 59.55 | i | 50.32 | i | 40.50 | l | 32.95 | i | ----- | z |
1987 | 27.25 | i | 34.25 | j | ----- | z | 50.02 | h | 56.08 | k | 66.48 | h | 70.11 | h | 68.26 | j | 63.12 | j | 54.02 | j | 39.34 | k | 27.13 | h | ----- | z |
1988 | ----- | z | 34.36 | k | 38.91 | h | 48.52 | j | 56.10 | j | 67.38 | i | 72.64 | m | 70.61 | h | 58.98 | i | 57.00 | l | 40.67 | j | 27.07 | i | ----- | z |
1989 | 25.98 | k | 31.44 | j | 45.93 | i | 52.45 | j | 57.95 | j | 65.17 | g | 73.88 | k | 69.07 | i | 63.29 | i | 52.10 | j | 37.90 | f | 30.15 | h | ----- | z |
1990 | 28.35 | h | 33.25 | f | 40.53 | l | 51.16 | a | 55.66 | 69.67 | i | 72.64 | i | 69.80 | i | 66.21 | k | 51.62 | j | 39.23 | b | 24.27 | 42.58 | h | ||
1991 | 27.74 | f | 37.37 | a | 38.02 | b | 45.59 | a | 54.90 | 62.83 | 71.29 | 71.52 | 63.32 | 53.82 | 38.74 | a | 26.95 | 51.30 | a | |||||||
1992 | 22.24 | 35.55 | 41.80 | c | 52.54 | d | 57.81 | d | 63.72 | a | 68.74 | d | 68.28 | b | 63.04 | c | 54.65 | d | 33.55 | a | 22.84 | i | 51.08 | a | ||
1993 | 34.23 | i | 34.18 | f | 42.02 | a | 47.41 | b | 56.39 | c | 64.31 | a | 68.52 | 69.20 | a | 62.90 | a | 51.52 | d | 36.50 | b | 30.54 | e | 52.93 | b | |
1994 | 30.96 | f | 32.35 | b | 43.66 | b | 47.50 | 56.33 | a | 69.42 | 73.30 | a | 72.73 | 63.65 | c | 51.21 | b | 35.77 | d | 33.32 | a | 52.66 | a | |||
1995 | 31.74 | 40.90 | c | 42.33 | b | 44.40 | 51.38 | c | 64.31 | a | 70.24 | d | 72.98 | b | 65.20 | 50.16 | c | 42.70 | h | 34.71 | j | 53.36 | b | |||
1996 | 30.67 | h | 38.20 | i | 40.26 | l | 49.09 | h | 60.12 | n | 68.42 | l | 72.89 | l | 71.56 | n | 61.05 | t | 48.60 | k | 42.69 | n | 30.57 | k | ----- | z |
1997 | 24.47 | l | 33.97 | j | 43.30 | k | 46.39 | k | 59.38 | o | 65.44 | m | 70.60 | j | 70.33 | j | 65.92 | j | 51.18 | i | 42.17 | l | 28.50 | k | ----- | z |
1998 | 31.88 | k | 31.56 | j | 37.39 | m | 43.84 | k | 53.84 | l | 61.55 | i | 73.07 | i | 71.25 | m | 67.64 | i | 51.55 | k | 41.38 | m | 32.39 | i | ----- | z |
1999 | 34.68 | l | 36.74 | i | 45.27 | i | 47.62 | n | 52.93 | q | 65.71 | k | 71.35 | k | 68.63 | l | 61.67 | j | 54.28 | o | 44.72 | l | 29.50 | k | ----- | z |
2000 | 36.32 | n | 38.45 | j | 40.24 | h | 51.06 | l | 60.86 | m | 69.22 | n | 72.77 | r | 72.39 | l | 64.97 | o | 52.32 | l | 33.94 | m | 33.81 | o | ----- | z |
2001 | 29.60 | p | 33.32 | k | 42.43 | j | 50.06 | l | 59.92 | m | 66.93 | o | 70.36 | m | 69.64 | m | 66.13 | o | 55.47 | n | 41.08 | k | 29.12 | k | ----- | z |
2002 | 31.86 | j | 31.97 | i | 40.50 | j | 53.17 | l | 57.56 | m | 67.63 | o | 74.47 | n | 71.57 | p | 64.68 | m | 50.45 | l | 39.25 | l | 29.29 | l | ----- | z |
2003 | 37.71 | j | 33.44 | j | 41.00 | l | 46.81 | l | 58.77 | p | 66.84 | n | 75.42 | m | 73.34 | o | 64.64 | l | 56.92 | m | 38.11 | l | 31.02 | k | ----- | z |
2004 | 29.21 | l | 30.50 | k | 47.23 | i | 49.53 | l | 57.77 | p | 66.34 | k | 71.03 | n | 68.00 | l | 61.65 | m | 52.86 | m | 38.90 | j | 32.00 | k | ----- | z |
2005 | 35.67 | p | 35.86 | j | 38.90 | k | 47.24 | k | 56.92 | k | 63.84 | k | 74.57 | q | 71.24 | l | 64.20 | o | 53.28 | m | 41.69 | l | 31.29 | l | ----- | z |
2006 | 31.03 | l | 35.53 | j | 39.47 | l | 49.53 | o | 60.30 | p | 70.65 | m | 73.79 | q | 69.18 | n | 58.80 | o | 47.86 | q | 43.69 | l | 31.88 | n | ----- | z |
2007 | 26.17 | m | 35.65 | k | 45.10 | k | 48.03 | n | 57.53 | l | 66.56 | n | 73.19 | j | 72.96 | q | ----- | z | 52.39 | v | 46.04 | q | 27.60 | e | 27.60 | k |
2008 | 26.12 | a | 34.80 | i | 41.02 | h | 45.29 | d | 53.69 | b | 66.67 | c | 72.13 | a | 71.39 | d | 64.54 | d | 51.79 | b | 41.78 | e | 30.80 | i | 54.82 | c |
2009 | 31.98 | e | 34.90 | d | 41.78 | d | 45.78 | e | 60.60 | 65.57 | o | 74.84 | i | 70.74 | f | 63.42 | l | 49.57 | i | 41.19 | d | 25.90 | f | 42.70 | f | |
2010 | 23.97 | o | 31.56 | c | 39.17 | d | 48.13 | 54.45 | b | 67.42 | 73.90 | 70.46 | c | 66.07 | a | 53.76 | 37.16 | a | 37.13 | a | 52.66 | a | ||||
2011 | 25.31 | 27.58 | b | 41.90 | 46.88 | 52.44 | 66.03 | 73.12 | a | 73.85 | 64.35 | 50.77 | 37.80 | 28.02 | 49.00 | |||||||||||
2012 | 32.42 | f | 33.19 | 41.84 | 51.78 | 60.08 | 70.18 | 73.53 | 73.10 | 65.02 | 53.52 | 43.35 | 29.11 | 54.06 | a | |||||||||||
2013 | 21.95 | 31.12 | b | 42.60 | a | 48.47 | 56.56 | 70.45 | a | 74.02 | 69.79 | 64.23 | 47.50 | a | 40.07 | 27.62 | a | 49.53 | ||||||||
2014 | 32.48 | 37.98 | 41.08 | g | 48.28 | 56.56 | 66.64 | e | 74.21 | 66.05 | l | 65.88 | 55.06 | 39.50 | 41.64 | x | 52.96 | c | ||||||||
2015 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 66.05 | h | 70.08 | 70.47 | 65.72 | c | 57.63 | e | 37.94 | c | 31.67 | d | 55.59 | f | ||
2016 | 29.25 | a | 38.55 | a | 45.08 | f | 47.84 | b | 54.76 | 66.08 | q | 72.75 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 48.63 | g | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 27.12 | 33.06 | 38.86 | 46.75 | 55.32 | 64.63 | 71.11 | 69.17 | 62.28 | 51.03 | 38.20 | 29.31 | 48.51 | |||||||||||||
S.D. | 4.26 | 4.03 | 3.01 | 2.93 | 2.69 | 2.36 | 1.67 | 2.19 | 2.27 | 2.59 | 3.15 | 4.38 | 0.95 | |||||||||||||
SKEW | -0.49 | -0.49 | 0.01 | -0.07 | 0.29 | 0.33 | 0.14 | -0.14 | -0.21 | 0.01 | -0.46 | -0.36 | 0.14 | |||||||||||||
MAX | 35.39 | 40.90 | 46.13 | 52.54 | 61.48 | 70.45 | 74.39 | 73.85 | 66.48 | 57.63 | 44.13 | 37.61 | 50.48 | |||||||||||||
MIN | 14.31 | 21.36 | 32.52 | 40.36 | 50.78 | 59.90 | 67.92 | 64.11 | 57.33 | 44.02 | 30.20 | 18.85 | 46.47 | |||||||||||||
YRS | 59 | 61 | 61 | 65 | 64 | 63 | 61 | 60 | 65 | 64 | 65 | 59 | 36 |