YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1929 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 74.33 | ----- | z | 92.23 | ----- | z | 61.58 | ----- | z | 40.61 | 67.19 | h | ||||
1930 | 20.06 | 38.32 | 44.52 | 57.30 | 55.48 | 76.27 | 91.45 | 88.50 | a | 76.25 | b | 62.16 | 49.76 | a | 35.83 | a | 57.99 | |||||||||
1931 | 39.16 | 44.25 | 53.35 | 64.00 | 74.68 | 80.07 | 94.10 | a | 92.00 | 75.17 | 67.41 | b | 46.66 | a | 34.93 | a | 63.81 | |||||||||
1932 | 33.42 | 36.83 | 47.87 | 60.20 | 68.80 | a | 79.59 | a | 87.97 | 87.19 | 82.87 | 65.87 | 56.97 | 35.29 | 61.91 | |||||||||||
1933 | 37.03 | 35.68 | 51.42 | 61.60 | 64.77 | 85.73 | 93.77 | a | 88.57 | a | 77.66 | a | 73.77 | 55.30 | 49.39 | 64.56 | ||||||||||
1934 | 46.71 | 50.96 | 63.42 | 69.77 | 79.77 | 78.73 | 92.26 | 91.58 | 79.33 | 67.04 | d | 47.93 | a | 30.90 | a | 66.53 | ||||||||||
1935 | 34.33 | a | 35.04 | 42.87 | 53.37 | 61.94 | 74.73 | 84.03 | 89.58 | 83.30 | 64.35 | 44.20 | 37.94 | 58.81 | ||||||||||||
1936 | 37.19 | 39.70 | b | 56.13 | 65.07 | 77.23 | 80.93 | 94.97 | a | 92.03 | 79.40 | 73.29 | 58.30 | 42.94 | 66.43 | |||||||||||
1937 | 26.42 | 39.54 | 50.74 | 57.40 | 73.84 | 77.63 | 92.45 | 90.90 | 83.77 | 69.94 | 54.47 | 45.00 | 63.51 | |||||||||||||
1938 | 41.16 | 42.68 | 45.63 | a | 61.47 | 66.45 | 79.60 | 88.29 | 87.03 | 85.10 | 64.90 | 45.30 | 43.55 | 62.60 | ||||||||||||
1939 | 41.47 | a | 36.54 | 52.39 | 66.87 | 75.16 | 76.90 | 92.13 | ----- | z | 79.27 | 64.10 | 57.90 | 49.97 | 62.97 | a | ||||||||||
1940 | 41.06 | 43.45 | 55.55 | 60.20 | 75.90 | 87.10 | 90.42 | 92.32 | 73.77 | 66.16 | 44.67 | 45.39 | 64.67 | |||||||||||||
1941 | 39.45 | 46.43 | 57.13 | 60.07 | 69.94 | 75.33 | 91.65 | 87.19 | 73.37 | 63.58 | 54.87 | 41.19 | 63.35 | |||||||||||||
1942 | 31.10 | 38.57 | 50.84 | 63.80 | 63.27 | a | 74.87 | 92.77 | 90.74 | 82.53 | 69.39 | 50.60 | 41.03 | 62.46 | ||||||||||||
1943 | 39.42 | 44.04 | 52.10 | 67.70 | 68.03 | 74.13 | 89.65 | 88.00 | 87.47 | 65.26 | 53.80 | 43.16 | 64.40 | |||||||||||||
1944 | 38.13 | 41.76 | 51.52 | 59.43 | 72.61 | 72.13 | 88.68 | 89.00 | 80.90 | 75.42 | 46.77 | 39.06 | 62.95 | |||||||||||||
1945 | 40.73 | a | 45.21 | 48.55 | 59.57 | 68.65 | 75.10 | 93.97 | 90.68 | 77.07 | 71.16 | 45.30 | 38.74 | 62.89 | ||||||||||||
1946 | 40.03 | 44.68 | 53.65 | 67.67 | 70.39 | 80.13 | 91.58 | 92.87 | 79.60 | 56.45 | 46.03 | 45.48 | 64.05 | |||||||||||||
1947 | 36.87 | 50.57 | 57.39 | 62.07 | 78.48 | 74.36 | b | 92.13 | 90.58 | 82.60 | 67.45 | 45.03 | 40.87 | 64.87 | ||||||||||||
1948 | 46.39 | 43.76 | 46.74 | 58.97 | 68.90 | 79.83 | 89.06 | 88.19 | 78.07 | a | 69.37 | a | 47.30 | 33.50 | a | 62.51 | ||||||||||
1949 | 24.68 | 37.89 | 50.45 | 69.50 | 74.48 | 80.53 | 91.81 | 90.23 | 83.17 | 62.17 | b | 61.53 | 39.97 | 63.87 | ||||||||||||
1950 | 32.97 | 46.81 | a | 49.10 | a | 61.67 | 69.65 | 78.97 | a | 91.48 | 90.48 | 77.55 | a | 70.35 | 53.63 | 46.06 | 64.06 | |||||||||
1951 | 37.23 | a | 45.57 | 48.48 | 68.03 | a | 72.39 | 78.90 | 92.17 | a | 88.13 | a | 82.90 | 62.16 | 49.93 | 35.45 | 63.45 | |||||||||
1952 | 33.52 | 39.66 | 45.31 | b | 66.83 | 72.03 | 77.43 | 89.19 | 90.16 | 83.83 | 78.19 | 49.83 | a | 39.06 | 63.75 | |||||||||||
1953 | 50.03 | a | 47.96 | 55.23 | 61.47 | 65.22 | d | 72.14 | a | 93.90 | 88.10 | 83.97 | 69.06 | 56.47 | 41.23 | 65.40 | ||||||||||
1954 | 42.03 | a | 49.89 | 50.48 | 64.80 | 77.26 | 75.20 | 92.87 | 86.55 | 80.73 | 67.77 | 58.53 | 38.87 | 65.42 | ||||||||||||
1955 | 33.48 | 36.86 | 45.42 | 54.37 | 68.33 | a | 80.57 | 86.45 | 93.42 | 79.70 | 68.90 | 47.13 | 40.84 | 61.29 | ||||||||||||
1956 | 39.65 | 37.82 | a | 52.68 | 63.13 | 70.90 | 78.93 | 91.42 | 86.68 | 83.48 | a | 63.94 | 50.70 | t | 41.31 | e | 64.54 | a | ||||||||
1957 | 32.34 | b | 44.38 | b | 50.86 | b | 57.89 | b | 66.52 | 80.48 | a | 88.10 | 86.13 | a | 80.43 | b | 59.28 | f | 48.13 | 45.77 | a | 61.91 | a | |||
1958 | 39.58 | 49.07 | a | 48.38 | b | 56.93 | 77.24 | b | 75.63 | 86.90 | 89.73 | a | 78.52 | c | 72.87 | 54.10 | 49.74 | 64.89 | ||||||||
1959 | 44.48 | 42.67 | a | 52.84 | 65.50 | 64.16 | 81.59 | a | 92.57 | a | 88.05 | l | 71.72 | a | 66.19 | 55.77 | 43.23 | 61.88 | a | |||||||
1960 | 34.16 | 39.90 | 52.67 | a | 62.13 | 66.61 | 82.13 | 92.00 | 83.40 | a | 81.55 | a | 65.74 | 48.97 | a | 43.26 | 62.71 | |||||||||
1961 | 45.33 | a | 48.36 | 51.68 | 59.70 | 68.84 | 86.00 | 89.68 | 90.13 | a | 71.23 | 63.77 | 49.80 | 39.23 | 63.65 | |||||||||||
1962 | 34.29 | c | 41.63 | a | 47.29 | 66.20 | 64.40 | a | 81.48 | e | 85.48 | 83.87 | a | 80.72 | a | 66.23 | 53.00 | d | 46.03 | 62.55 | ||||||
1963 | 39.69 | e | 51.33 | d | 52.77 | a | 54.33 | 70.00 | a | 74.19 | d | 85.29 | 87.81 | 81.38 | i | 71.91 | i | 52.77 | d | 41.72 | b | 60.99 | b | |||
1964 | 37.55 | 40.34 | 47.78 | h | 57.63 | 67.87 | 71.80 | 89.03 | 85.52 | d | 76.13 | 72.07 | c | 47.87 | 42.38 | e | 62.56 | a | ||||||||
1965 | 37.61 | c | 47.64 | 52.48 | 61.70 | c | 64.71 | c | 75.90 | 85.39 | c | 82.06 | 69.11 | c | 73.52 | 51.70 | c | 42.56 | d | 62.03 | ||||||
1966 | 39.03 | 40.11 | a | 51.66 | b | 64.70 | c | 77.81 | j | 75.17 | g | 88.87 | 88.83 | a | 85.00 | i | 65.35 | e | 51.83 | f | 40.89 | d | 59.93 | d | ||
1967 | 41.24 | b | 49.22 | a | 52.30 | h | 50.00 | d | 70.70 | h | 75.62 | a | 91.58 | 93.16 | 81.80 | 66.71 | n | 53.67 | f | 31.29 | q | 68.95 | e | |||
1968 | ----- | z | ----- | z | 55.52 | j | 57.93 | c | 69.12 | n | 79.37 | c | 93.50 | k | 79.11 | c | 76.89 | b | 65.63 | a | 47.57 | i | 39.29 | q | 71.79 | g |
1969 | 39.71 | 40.23 | f | 49.71 | g | 65.33 | o | 73.82 | n | 75.65 | d | 89.10 | a | 90.89 | d | ----- | z | 57.96 | d | 55.58 | k | 44.95 | l | 70.66 | g | |
1970 | 40.96 | g | 51.42 | d | 50.73 | p | 53.09 | g | 66.00 | l | 76.93 | c | 88.79 | b | 91.93 | q | 75.50 | n | 62.83 | m | 51.11 | l | 37.19 | j | 72.38 | i |
1971 | 40.96 | h | 51.86 | n | ----- | z | 59.25 | n | 69.79 | q | 73.88 | f | 88.30 | h | 90.50 | g | 73.76 | i | 62.41 | n | 49.50 | l | 34.37 | l | ----- | z |
1972 | 36.35 | h | ----- | z | 58.00 | j | 59.00 | f | 75.13 | a | 82.21 | a | 89.69 | e | 89.37 | d | 74.36 | e | 63.52 | b | 46.07 | c | 32.63 | a | 69.12 | d |
1973 | 35.85 | e | 47.35 | b | 50.04 | f | 59.78 | c | 74.56 | d | 80.14 | a | 89.20 | a | 88.25 | c | 76.66 | a | 66.68 | i | 44.74 | g | 43.00 | m | 68.97 | d |
1974 | 34.50 | g | 43.47 | k | 49.17 | h | 57.80 | e | 67.00 | b | 85.28 | a | 87.00 | 86.33 | g | 81.50 | b | 68.52 | d | 53.85 | j | 37.67 | j | 74.52 | f | |
1975 | 36.00 | o | 43.56 | j | 52.38 | r | 50.68 | h | 68.77 | i | 75.33 | i | 88.57 | a | 83.45 | i | 80.15 | c | 62.95 | l | 47.41 | h | 45.10 | j | 84.36 | j |
1976 | 40.41 | n | 46.47 | n | 49.11 | l | 58.96 | d | 74.30 | h | 76.45 | a | 88.40 | a | 78.79 | c | 76.47 | k | 64.54 | r | 58.22 | l | 47.50 | g | 75.65 | h |
1977 | 35.23 | e | 48.79 | i | 50.11 | m | 69.14 | i | 60.42 | g | 84.48 | a | 86.80 | f | 87.96 | g | 75.81 | c | 66.38 | b | 47.68 | h | 45.42 | g | 65.48 | h |
1978 | 40.43 | c | 43.64 | f | 58.41 | i | 56.08 | d | 63.46 | e | 77.25 | b | 85.84 | 86.25 | g | 72.20 | 70.07 | c | 45.61 | l | 34.90 | b | 62.53 | d | ||
1979 | 27.76 | f | 42.20 | h | 53.25 | g | 59.59 | c | 69.23 | e | 79.64 | b | 88.93 | d | 84.21 | b | 82.40 | 66.32 | c | 44.30 | 43.14 | i | 71.83 | d | ||
1980 | 38.56 | f | 49.22 | k | 48.91 | i | 64.55 | h | 65.23 | e | 73.36 | e | 87.33 | a | 83.07 | b | 75.26 | c | 65.80 | a | 51.64 | b | 46.30 | d | 68.50 | d |
1981 | 37.92 | g | 45.87 | e | 55.64 | q | ----- | z | ----- | z | 78.71 | m | 86.26 | 91.52 | d | 78.20 | j | 61.24 | f | 51.78 | c | 44.84 | f | 68.86 | h | |
1982 | 35.09 | h | 42.74 | i | 50.26 | h | 56.22 | g | 67.15 | d | 76.04 | b | 84.72 | b | 87.78 | h | 73.23 | d | 60.55 | k | 42.57 | i | 35.79 | g | 75.28 | h |
1983 | 41.04 | f | 46.42 | d | 48.50 | c | 54.12 | d | 69.67 | g | 76.77 | d | 83.79 | c | 86.52 | h | 77.52 | e | 68.89 | l | 46.45 | j | 31.67 | m | 64.52 | f |
1984 | 28.50 | i | 39.90 | s | ----- | z | 58.73 | o | 68.00 | i | 73.00 | b | 88.52 | 87.95 | j | 78.04 | g | 58.06 | n | 46.59 | m | 35.62 | g | 80.76 | j | |
1985 | 33.92 | g | 39.65 | k | 48.71 | j | 66.29 | f | 71.15 | e | 83.85 | d | 92.33 | g | 85.45 | i | 68.74 | c | 62.92 | g | 39.55 | h | 33.80 | p | 74.58 | i |
1986 | 45.07 | q | 50.38 | t | 60.05 | k | 60.84 | e | 69.76 | j | 85.28 | e | 84.93 | d | 91.44 | f | 70.52 | e | 66.23 | i | 55.15 | q | 39.75 | g | 75.39 | h |
1987 | 36.58 | g | 46.38 | g | 52.74 | h | 71.74 | c | 72.32 | c | 82.11 | c | 85.00 | c | 87.19 | e | 83.58 | d | 73.30 | d | 49.52 | a | 38.88 | f | 75.59 | d |
1988 | 34.50 | k | 48.62 | c | 55.21 | c | 65.09 | g | 70.79 | b | 82.93 | a | 92.67 | d | 91.23 | i | 81.93 | o | 78.55 | t | 46.62 | n | ----- | z | 70.04 | g |
1989 | ----- | z | ----- | z | ----- | z | 65.43 | i | 69.48 | 85.97 | 96.23 | 88.58 | 79.13 | g | 66.35 | 56.07 | 46.74 | 72.77 | e | |||||||
1990 | 43.16 | 44.00 | 59.33 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 50.13 | 32.50 | c | 45.83 | g | |||
1991 | 37.21 | b | 52.15 | a | 48.60 | k | 56.07 | 61.90 | b | 73.47 | o | ----- | z | 89.86 | q | ----- | z | 67.29 | 46.72 | a | ----- | z | 53.56 | f | ||
1992 | ----- | z | ----- | z | 59.93 | q | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1993 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 41.26 | h | ----- | z |
1994 | 42.90 | 41.43 | 58.61 | c | 62.03 | a | 69.42 | 78.97 | a | 88.48 | 86.70 | h | 79.03 | 61.20 | a | 37.39 | b | 35.59 | d | 59.55 | a | |||||
1995 | 39.92 | e | 53.31 | b | 49.48 | 55.46 | b | 65.10 | 72.00 | a | 83.73 | a | 82.52 | 75.90 | 61.93 | a | 54.14 | a | 37.79 | b | 60.94 | |||||
1996 | 39.37 | a | 42.45 | 52.87 | a | 59.30 | 63.00 | 76.50 | 87.74 | 84.55 | 71.43 | 61.61 | 49.66 | a | 40.71 | g | 62.59 | a | ||||||||
1997 | 38.63 | a | 43.85 | a | 55.93 | a | 56.00 | a | 72.06 | 73.83 | 82.06 | 84.68 | 76.27 | 61.35 | 48.48 | g | 37.57 | a | 62.02 | a | ||||||
1998 | 44.13 | 43.74 | a | 51.67 | a | 56.67 | 60.41 | b | 70.27 | 88.74 | 88.33 | a | 78.30 | 61.23 | a | 48.21 | b | 36.36 | i | 62.88 | a | |||||
1999 | 40.82 | c | 42.00 | a | 50.57 | a | 55.50 | 66.67 | a | 71.70 | 87.16 | 85.90 | 77.17 | 69.47 | a | 56.20 | 38.93 | a | 61.84 | |||||||
2000 | 41.17 | b | 47.93 | b | 50.73 | a | 64.46 | b | 68.90 | 82.36 | h | 87.10 | b | 88.71 | 74.67 | 59.38 | b | 40.17 | 37.14 | b | 60.03 | a | ||||
2001 | 33.37 | a | 41.96 | a | 52.92 | e | 55.27 | 73.75 | c | 76.69 | a | 86.48 | j | 89.96 | h | 80.97 | 64.37 | d | 51.40 | 36.57 | a | 56.73 | b | |||
2002 | 36.65 | 42.60 | c | 49.10 | b | 60.87 | 69.37 | a | 78.30 | 89.52 | 82.63 | d | 73.64 | e | 62.10 | a | 50.87 | 42.76 | b | 61.53 | ||||||
2003 | 44.80 | a | 43.07 | 54.17 | a | 54.87 | 63.77 | a | 77.76 | a | 91.16 | 86.55 | 76.83 | a | 67.90 | a | 44.41 | c | 40.97 | a | 62.19 | |||||
2004 | 34.65 | 39.24 | 60.34 | b | 63.13 | 64.81 | 74.76 | a | 85.50 | c | 80.70 | a | 72.86 | b | 59.10 | a | 45.33 | 41.86 | b | 60.19 | ||||||
2005 | 37.76 | b | 45.93 | 51.65 | e | 55.73 | d | 61.59 | b | 71.54 | d | 86.57 | a | 85.65 | e | 72.89 | c | 60.80 | a | 43.92 | d | 34.79 | c | 59.07 | ||
2006 | 37.87 | 43.04 | 43.21 | b | 55.92 | d | 67.71 | j | 78.77 | q | 91.57 | j | 80.92 | g | 75.27 | 62.77 | 49.10 | 38.90 | 50.76 | d | ||||||
2007 | 37.73 | e | 44.95 | g | 56.31 | b | 58.67 | 71.61 | 79.60 | 93.55 | 87.81 | 75.03 | 59.06 | 51.17 | 34.74 | 64.12 | a | |||||||||
2008 | 32.60 | a | 39.39 | a | 46.90 | 53.63 | 65.52 | 75.53 | 88.16 | 87.29 | 76.33 | 63.74 | 52.17 | 39.00 | 60.02 | |||||||||||
2009 | 39.16 | 43.14 | 48.13 | 56.53 | 69.90 | 73.03 | 86.97 | 86.14 | b | 82.10 | 55.10 | 49.63 | 34.32 | 60.35 | ||||||||||||
2010 | 41.16 | 43.32 | 50.76 | b | 54.70 | 57.74 | 72.07 | 86.29 | 83.80 | a | 77.03 | 65.74 | 44.47 | 39.14 | b | 59.69 | ||||||||||
2011 | 36.74 | 41.23 | b | 45.84 | 51.03 | a | 58.90 | 69.60 | 85.13 | 88.23 | 81.77 | 63.26 | 46.03 | 41.74 | 59.13 | |||||||||||
2012 | 42.39 | 43.90 | 50.55 | 60.60 | 66.52 | 75.70 | 90.19 | 89.84 | 80.60 | 64.13 | 50.88 | f | 39.03 | 63.95 | a | |||||||||||
2013 | 29.59 | b | 43.00 | 53.13 | 58.37 | 68.06 | 78.47 | 93.77 | 89.48 | 74.77 | 59.65 | 50.30 | 37.83 | a | 61.37 | |||||||||||
2014 | 45.35 | 46.37 | a | 53.45 | 58.63 | 69.68 | 76.17 | 91.55 | 85.23 | 78.23 | 67.55 | 47.93 | 44.13 | 63.69 | ||||||||||||
2015 | 41.47 | a | 51.22 | a | 58.32 | 59.07 | 66.81 | 84.97 | 84.90 | 88.61 | 78.93 | 69.58 | 45.13 | 37.81 | 63.90 | |||||||||||
2016 | 39.72 | b | 48.10 | 53.00 | 63.97 | 66.55 | 80.77 | 86.77 | a | 86.52 | 74.67 | 64.00 | 56.00 | 34.48 | 62.88 | |||||||||||
2017 | 30.60 | a | 43.26 | a | 54.97 | a | 54.67 | 67.03 | 77.86 | a | 92.37 | a | 88.84 | 75.97 | 60.52 | 50.27 | 33.95 | k | 63.30 | a | ||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 38.08 | 43.89 | 51.67 | 60.01 | 68.58 | 77.82 | 89.20 | 87.74 | 78.02 | 65.69 | 50.01 | 40.16 | 62.68 | |||||||||||||
S.D. | 5.16 | 4.37 | 4.17 | 4.63 | 4.95 | 4.10 | 3.12 | 3.27 | 4.10 | 4.57 | 4.71 | 4.37 | 2.03 | |||||||||||||
SKEW | -0.78 | 0.11 | 0.23 | 0.35 | -0.06 | 0.29 | -0.01 | -0.63 | -0.12 | 0.26 | 0.05 | 0.17 | -0.38 | |||||||||||||
MAX | 50.03 | 53.31 | 63.42 | 71.74 | 79.77 | 87.10 | 96.23 | 93.42 | 87.47 | 78.19 | 61.53 | 49.97 | 66.53 | |||||||||||||
MIN | 20.06 | 35.04 | 42.87 | 50.00 | 55.48 | 69.60 | 82.06 | 78.79 | 68.74 | 55.10 | 37.39 | 30.90 | 57.99 | |||||||||||||
YRS | 68 | 68 | 63 | 72 | 71 | 79 | 78 | 68 | 74 | 71 | 65 | 64 | 44 |