YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1927 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1928 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1929 | ----- | z | ----- | z | ----- | z | 64.00 | y | 71.81 | 76.10 | 87.42 | 89.65 | ----- | z | 65.26 | 45.20 | 36.29 | 67.39 | e | |||||||
1930 | 19.65 | 39.64 | 53.77 | 67.57 | 69.61 | 75.93 | 88.35 | 88.39 | 74.43 | 56.81 | 41.10 | 29.65 | 58.74 | |||||||||||||
1931 | 33.84 | 36.61 | 48.55 | 62.33 | 74.65 | 76.53 | ----- | z | 87.68 | ----- | z | ----- | z | 42.46 | b | 31.29 | 54.88 | c | ||||||||
1932 | 27.30 | d | 35.56 | b | 46.77 | 61.93 | 68.03 | 81.77 | 82.10 | 83.84 | 73.71 | b | 57.93 | b | 39.64 | h | 28.93 | d | 58.90 | a | ||||||
1933 | 31.12 | f | 25.18 | 45.48 | 60.13 | 64.68 | 79.43 | 88.16 | 87.42 | 68.83 | 61.83 | a | 40.48 | a | 34.65 | 59.66 | a | |||||||||
1934 | 34.65 | 46.75 | 52.71 | 68.39 | b | 74.13 | a | 81.60 | 86.97 | 88.13 | ----- | z | ----- | z | 46.37 | 33.58 | 61.33 | b | ||||||||
1935 | 32.61 | 39.71 | 44.90 | 57.90 | ----- | z | ----- | z | 88.71 | 84.97 | 80.50 | 59.39 | 38.21 | a | 33.00 | 55.99 | b | |||||||||
1936 | 32.61 | 20.21 | 47.26 | 65.30 | 75.68 | 77.43 | 88.45 | 86.48 | 74.90 | 68.77 | 43.33 | 36.33 | a | 59.73 | ||||||||||||
1937 | 15.58 | 31.75 | 50.81 | 56.76 | a | 71.35 | 75.00 | 87.68 | 80.58 | 78.10 | 64.42 | 46.13 | 36.61 | 57.90 | ||||||||||||
1938 | 33.55 | 36.93 | a | 48.19 | 63.10 | 72.94 | 83.97 | 91.87 | 85.71 | 85.60 | 64.67 | a | 41.03 | 34.00 | c | 61.80 | ||||||||||
1939 | 35.45 | 32.85 | a | 49.45 | 63.11 | b | 70.28 | b | 72.62 | a | 88.45 | 89.41 | b | 77.10 | 59.58 | 48.43 | 40.28 | b | 60.58 | |||||||
1940 | 32.77 | 37.48 | 52.83 | a | 58.77 | 73.48 | 83.59 | a | 85.87 | 85.26 | 76.89 | b | 60.23 | a | 36.03 | a | 36.90 | 60.01 | ||||||||
1941 | 36.00 | 42.61 | 57.16 | 64.03 | 67.35 | 74.39 | b | 89.55 | 80.13 | a | 65.20 | 57.16 | 48.03 | 36.82 | c | 59.87 | ||||||||||
1942 | 29.03 | 37.54 | 50.23 | 63.40 | 67.53 | a | 74.21 | a | 87.97 | 89.10 | 80.77 | 64.58 | 37.60 | 33.06 | 59.58 | |||||||||||
1943 | 26.07 | c | 37.30 | a | 45.63 | d | 64.21 | a | 65.80 | a | 73.00 | 86.52 | 83.55 | 79.43 | 60.58 | 43.00 | 35.32 | 58.37 | ||||||||
1944 | 33.03 | a | 37.34 | 48.06 | 61.57 | b | 72.13 | 78.46 | b | 87.77 | 84.52 | 80.30 | 70.26 | 40.00 | 31.61 | 60.42 | ||||||||||
1945 | 34.13 | a | 41.82 | 46.58 | 58.27 | 70.94 | 76.33 | 89.87 | 88.06 | 72.27 | 65.06 | 40.03 | 33.81 | 59.76 | ||||||||||||
1946 | 33.81 | 39.18 | 50.68 | 61.90 | a | 75.45 | 76.71 | b | 87.10 | 87.10 | 73.00 | a | 55.03 | 40.04 | b | 36.80 | a | 59.73 | ||||||||
1947 | 32.10 | b | ----- | z | 56.13 | a | 63.90 | a | 77.32 | 75.83 | 85.64 | c | 83.90 | a | 77.17 | 56.31 | b | 43.67 | 34.35 | 62.39 | a | |||||
1948 | 31.29 | 34.24 | 47.23 | 55.07 | 64.00 | a | 78.62 | a | 81.17 | a | 80.43 | c | 74.37 | 60.58 | 43.20 | 27.45 | 56.47 | |||||||||
1949 | 17.45 | 30.39 | 48.42 | 66.18 | h | 77.43 | c | 79.97 | 86.39 | 86.10 | a | 79.17 | 59.06 | ----- | z | ----- | z | 62.71 | c | |||||||
1950 | 14.74 | l | ----- | z | ----- | z | 57.31 | d | 68.03 | 74.21 | b | 87.00 | 88.16 | 80.87 | 56.10 | 41.46 | b | 37.19 | 65.59 | c | ||||||
1951 | 31.48 | j | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 76.60 | 57.13 | 41.53 | 30.00 | a | 51.32 | h | |||
1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 70.47 | a | 42.07 | 34.58 | 49.04 | i | ||
1953 | 41.55 | 44.21 | 52.19 | 58.27 | 66.45 | 71.87 | 86.94 | 84.48 | 77.57 | 64.42 | 48.10 | 38.65 | 61.22 | |||||||||||||
1954 | 30.77 | a | 37.68 | f | ----- | z | ----- | z | ----- | z | ----- | z | 84.52 | 78.97 | 74.17 | a | 59.42 | 49.69 | a | 35.00 | 58.93 | e | ||||
1955 | 32.48 | b | ----- | z | ----- | z | 50.00 | x | 64.87 | 79.73 | 83.77 | 87.94 | 77.57 | 63.13 | 36.53 | 30.74 | 61.86 | c | ||||||||
1956 | 32.65 | 28.24 | 43.32 | 65.07 | 77.48 | 73.90 | 90.45 | 88.35 | 80.43 | 60.61 | 41.03 | 36.19 | 59.81 | |||||||||||||
1957 | 21.77 | a | 33.64 | 47.84 | 59.73 | 73.61 | 80.40 | 86.06 | 82.74 | 80.87 | 56.93 | a | 44.47 | 38.87 | 58.91 | |||||||||||
1958 | 37.23 | 47.96 | 50.16 | 57.70 | 79.45 | 82.53 | 92.29 | 92.58 | 74.73 | 63.61 | 42.33 | 34.13 | 62.89 | |||||||||||||
1959 | 33.35 | 35.89 | a | 49.19 | 61.80 | 65.52 | 77.37 | 89.94 | 83.30 | a | 69.93 | 57.87 | 40.83 | 36.55 | 58.46 | |||||||||||
1960 | 28.32 | 39.55 | 50.13 | 59.23 | 65.39 | 81.33 | 94.68 | 82.26 | 78.83 | 63.61 | 45.07 | 33.30 | a | 60.14 | ||||||||||||
1961 | 33.97 | 43.68 | 50.74 | 59.80 | 66.94 | 85.27 | 90.87 | 92.65 | 71.97 | 60.39 | 42.57 | 32.74 | 60.96 | |||||||||||||
1962 | 29.13 | 40.14 | 46.58 | l | 65.45 | h | 64.61 | 79.97 | 87.68 | 82.88 | g | 78.57 | 61.43 | c | 46.32 | b | 38.37 | a | 58.47 | c | ||||||
1963 | 28.38 | b | 42.69 | b | 52.52 | 55.91 | g | 69.58 | e | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 31.14 | i | 48.29 | h | |
1964 | 36.00 | i | 39.77 | g | ----- | z | 63.65 | d | 71.13 | a | ----- | z | ----- | z | ----- | z | 74.20 | 65.97 | a | 42.59 | a | 29.42 | e | 57.83 | f | |
1965 | 34.59 | b | 38.46 | 47.80 | a | 63.60 | ----- | z | 79.93 | b | 87.29 | 83.24 | j | 72.30 | c | ----- | z | 49.43 | b | 36.58 | e | 56.66 | c | |||
1966 | 33.08 | e | 38.94 | k | 51.13 | h | 62.77 | h | 74.61 | m | ----- | z | 82.25 | o | ----- | z | 81.03 | 62.84 | f | 48.55 | a | 39.29 | 50.49 | h | ||
1967 | 39.65 | 46.82 | 50.19 | 55.04 | e | 67.97 | 83.07 | 90.84 | 95.73 | a | 86.47 | 61.52 | 46.83 | 34.55 | 63.22 | |||||||||||
1968 | 36.70 | a | 47.10 | 55.39 | 59.90 | 72.06 | 80.03 | 91.71 | 80.16 | 77.03 | 57.13 | 44.37 | 33.00 | a | 61.22 | |||||||||||
1969 | 21.97 | 33.96 | 48.87 | 60.33 | 73.90 | 83.63 | 86.97 | 84.93 | d | 75.67 | 58.35 | 45.83 | 34.43 | c | 59.07 | |||||||||||
1970 | 32.17 | a | 43.57 | 50.48 | 56.77 | 72.77 | 85.37 | 89.65 | 89.94 | 73.10 | 59.00 | 43.47 | 32.97 | 60.77 | ||||||||||||
1971 | 33.81 | 39.61 | 44.52 | 60.24 | a | 72.70 | a | 73.90 | 89.71 | 91.58 | 69.81 | c | 58.16 | 42.93 | 30.52 | 58.96 | ||||||||||
1972 | 28.60 | a | 38.10 | 54.13 | 57.67 | 72.03 | 78.69 | a | 85.81 | 89.10 | 71.67 | 61.77 | 44.93 | 30.52 | 59.42 | |||||||||||
1973 | 31.67 | a | 40.39 | 53.65 | 64.43 | 75.13 | 82.00 | k | 89.48 | 87.87 | 77.87 | 60.77 | a | 40.20 | 38.87 | 60.03 | a | |||||||||
1974 | 31.87 | 42.96 | 50.68 | 60.67 | 67.26 | 83.77 | 85.23 | 87.97 | 82.67 | 66.52 | 44.40 | 37.16 | 61.76 | |||||||||||||
1975 | 30.97 | 33.29 | 44.23 | 56.00 | 69.55 | 77.30 | 90.94 | 81.52 | 82.03 | 59.35 | 43.97 | 36.06 | 58.77 | |||||||||||||
1976 | 33.84 | 40.24 | 46.32 | 59.10 | 71.68 | 75.53 | 86.13 | 80.81 | 82.43 | 63.77 | 46.63 | 37.16 | 60.30 | |||||||||||||
1977 | 27.90 | 44.75 | 50.52 | 69.83 | 67.97 | 84.55 | a | 87.52 | 91.73 | a | 71.20 | 63.03 | 42.87 | 34.77 | 61.39 | |||||||||||
1978 | 33.65 | 40.52 | a | 54.35 | 60.07 | 68.87 | a | 83.77 | 88.03 | 84.35 | 73.53 | 64.81 | 37.83 | 29.32 | 59.93 | |||||||||||
1979 | 21.14 | b | 37.78 | a | 55.50 | a | 62.23 | 75.19 | 84.07 | 90.70 | a | 88.76 | b | 81.37 | 67.10 | a | 38.00 | 39.10 | a | 61.74 | ||||||
1980 | 27.84 | 36.90 | 49.55 | 65.90 | 69.61 | c | 73.27 | 87.81 | 82.65 | 76.23 | 63.97 | 44.67 | 36.83 | a | 59.60 | |||||||||||
1981 | 41.34 | b | 42.39 | 56.68 | 61.30 | 68.55 | 74.17 | a | 84.84 | 92.16 | 79.13 | 60.55 | 47.67 | 35.42 | 62.02 | |||||||||||
1982 | 31.17 | h | 40.13 | e | 51.77 | i | 55.60 | e | 72.32 | f | 82.71 | f | 85.65 | h | 85.36 | i | 76.33 | f | 59.76 | j | 33.55 | j | 30.71 | n | 47.87 | j |
1983 | 36.80 | f | 44.04 | a | 53.17 | a | 61.78 | c | 74.58 | e | 77.85 | c | 79.59 | b | 88.40 | f | 75.11 | b | 62.83 | b | 48.18 | b | 25.37 | a | 60.25 | b |
1984 | 34.66 | b | 40.36 | a | 52.93 | b | 56.80 | 63.79 | b | 74.22 | c | 88.55 | 86.06 | 71.17 | a | 57.59 | b | 41.97 | 21.84 | 57.49 | ||||||
1985 | 26.71 | 32.64 | 45.68 | 63.10 | 74.50 | a | 80.00 | d | 94.77 | 81.42 | 67.72 | a | 55.52 | b | 29.28 | a | 26.43 | a | 56.48 | |||||||
1986 | 34.32 | 36.19 | a | 53.71 | 58.29 | b | 70.48 | f | 85.79 | b | 82.10 | b | 92.13 | 69.21 | b | 66.26 | 43.54 | b | 33.71 | 59.57 | a | |||||
1987 | 32.03 | a | 41.39 | 53.87 | a | 67.14 | a | 73.11 | d | 82.54 | d | 83.08 | f | 84.11 | c | 82.77 | d | 67.71 | c | 48.61 | b | 34.20 | a | 60.68 | a | |
1988 | 31.23 | 43.46 | a | 51.71 | 63.32 | b | 69.14 | c | 76.77 | 88.13 | a | 86.27 | a | 76.44 | c | 68.77 | 44.04 | c | 33.47 | a | 61.06 | |||||
1989 | 35.90 | a | 32.62 | b | 47.16 | 66.33 | 69.10 | a | 80.48 | a | 87.66 | b | 81.20 | a | 79.60 | 61.70 | a | 46.33 | ----- | z | 62.55 | a | ||||
1990 | 39.87 | 39.79 | 55.17 | a | 65.62 | a | 67.13 | a | 76.38 | a | 90.53 | a | 86.65 | 84.24 | a | 57.97 | 44.24 | i | 31.20 | a | 63.14 | a | ||||
1991 | 31.87 | 50.21 | 50.89 | c | 62.27 | 67.00 | 72.56 | c | 86.50 | c | 86.55 | 84.27 | 62.60 | a | 41.89 | b | 39.27 | a | 61.32 | |||||||
1992 | ----- | z | 48.45 | 60.13 | 63.37 | 75.86 | b | 86.48 | c | 85.13 | h | 88.61 | 74.83 | 64.53 | a | 42.21 | a | 29.47 | a | 63.39 | b | |||||
1993 | 27.32 | 33.93 | a | 46.94 | 58.20 | 77.40 | a | 76.29 | b | 76.81 | 81.90 | a | 78.03 | 66.94 | 41.33 | 35.68 | 58.40 | |||||||||
1994 | 39.48 | ----- | z | 57.32 | 64.70 | ----- | z | 79.14 | b | 92.68 | 87.34 | b | 83.27 | 62.23 | 40.43 | 37.70 | a | 64.43 | b | |||||||
1995 | 36.71 | 48.70 | a | 52.61 | 60.38 | a | 74.66 | b | 73.65 | j | 87.14 | j | ----- | z | 79.19 | i | 59.52 | 48.57 | 36.50 | a | 52.21 | d | ||||
1996 | 29.52 | b | 39.10 | 50.45 | 62.47 | 64.42 | 77.68 | e | 91.44 | f | 87.45 | 71.32 | h | 59.23 | 40.13 | 31.87 | h | 56.72 | c | |||||||
1997 | 33.47 | a | 36.05 | g | 48.33 | a | 58.72 | a | 72.84 | 76.14 | a | ----- | z | 87.29 | 77.19 | d | 59.15 | e | ----- | z | ----- | z | 64.14 | d | ||
1998 | 35.39 | 46.19 | g | 52.73 | i | 62.50 | 72.40 | a | 79.23 | d | 93.07 | c | ----- | z | 83.03 | a | 62.32 | 47.55 | a | 33.95 | i | 66.94 | d | |||
1999 | 38.21 | b | 44.32 | i | 50.59 | b | 60.68 | b | 66.96 | e | 74.96 | b | 86.30 | k | 88.83 | a | 77.45 | a | 62.52 | 49.07 | a | 42.05 | l | 63.25 | c | |
2000 | 32.66 | b | 38.90 | 48.86 | i | 65.86 | b | 68.77 | a | 79.17 | a | 86.30 | a | 86.45 | 77.20 | 62.00 | 38.80 | 29.37 | a | 60.50 | a | |||||
2001 | ----- | z | 34.93 | 51.50 | a | 59.45 | a | 74.30 | a | 76.27 | h | 86.05 | j | 87.94 | 81.07 | 60.90 | b | 48.10 | a | ----- | z | 62.27 | d | |||
2002 | 38.45 | k | 42.64 | f | 48.93 | a | 61.46 | b | 67.35 | 77.79 | b | 89.17 | a | 85.29 | 77.83 | a | 63.23 | 46.77 | 37.69 | r | 68.65 | c | ||||
2003 | 38.23 | 45.38 | b | 53.55 | 60.07 | 70.45 | i | 83.09 | h | 93.36 | f | 88.90 | j | 78.77 | h | 67.71 | g | ----- | z | 36.50 | u | 49.31 | h | |||
2004 | 31.30 | k | 37.81 | h | 58.83 | h | 70.82 | h | 71.38 | j | 80.89 | k | 93.07 | p | 89.00 | h | 74.23 | h | 63.86 | j | 48.85 | j | 37.38 | w | ----- | z |
2005 | 35.45 | k | 46.69 | l | 58.65 | k | 64.29 | i | 74.00 | n | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2006 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2007 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2008 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2009 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2010 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2011 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2012 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 42.08 | r | 36.00 | 36.00 | k | |
2013 | 29.50 | q | 43.75 | l | 50.95 | j | 58.10 | a | 72.12 | o | 72.43 | p | 90.00 | c | 86.56 | d | 76.27 | 60.19 | 43.93 | 31.71 | 63.82 | e | ||||
2014 | 34.90 | a | 35.29 | d | 51.06 | 60.00 | 71.26 | 76.73 | 91.58 | 87.32 | 77.03 | 64.13 | a | 43.73 | 38.84 | 60.99 | ||||||||||
2015 | 34.11 | d | 47.96 | a | 57.20 | a | 60.40 | 71.81 | e | 85.90 | a | 88.38 | e | 85.79 | c | 72.07 | a | 67.25 | o | 44.17 | a | 34.33 | a | 62.01 | a | |
2016 | 33.45 | 45.77 | c | 52.45 | 68.15 | d | 70.70 | d | 91.80 | y | 81.28 | f | 86.56 | o | 71.00 | q | 57.00 | 51.03 | 29.07 | a | 50.95 | d | ||||
2017 | 24.77 | 33.11 | a | 46.07 | a | 56.79 | a | 66.24 | j | 77.18 | b | 88.97 | b | 90.00 | h | 77.50 | f | 58.68 | c | 42.81 | c | 29.66 | b | 50.89 | c | |
2018 | 36.57 | a | 40.96 | d | 48.75 | k | 56.39 | b | 74.96 | c | 77.40 | e | 88.58 | g | 88.00 | l | 72.97 | 60.52 | 44.77 | 36.35 | 55.65 | c | ||||
2019 | 35.94 | 27.82 | 42.39 | 59.43 | 70.90 | 78.27 | 84.42 | 87.68 | 72.17 | 54.29 | 45.00 | 34.19 | 57.71 | |||||||||||||
2020 | 37.52 | 44.38 | 51.16 | 60.83 | 69.48 | 75.27 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 56.44 | f | ||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 32.06 | 38.99 | 50.50 | 61.24 | 70.78 | 78.60 | 87.88 | 86.33 | 76.80 | 61.52 | 43.52 | 33.99 | 59.93 | |||||||||||||
S.D. | 5.23 | 5.85 | 3.73 | 3.38 | 3.83 | 3.80 | 3.26 | 3.51 | 4.49 | 3.70 | 3.76 | 3.66 | 1.57 | |||||||||||||
SKEW | -0.98 | -0.53 | 0.14 | 0.32 | 0.07 | 0.33 | -0.70 | 0.04 | -0.14 | 0.34 | -0.65 | -0.75 | -0.18 | |||||||||||||
MAX | 41.55 | 50.21 | 60.13 | 69.83 | 79.45 | 86.48 | 94.77 | 95.73 | 86.47 | 70.47 | 51.03 | 40.28 | 63.22 | |||||||||||||
MIN | 15.58 | 20.21 | 42.39 | 55.04 | 63.79 | 71.87 | 76.81 | 78.97 | 65.20 | 54.29 | 29.28 | 21.84 | 56.47 | |||||||||||||
YRS | 71 | 68 | 69 | 74 | 71 | 69 | 65 | 67 | 71 | 74 | 75 | 72 | 41 |