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 | 42.39 | a | 47.65 | 51.70 | 69.71 | 70.63 | 83.10 | 78.77 | 72.13 | 57.62 | b | 44.79 | a | 34.40 | a | 59.35 | a | |||||||
1929 | 28.47 | a | 31.52 | a | 47.84 | 51.10 | 64.45 | 69.43 | 79.45 | 83.80 | a | 67.70 | 62.81 | 52.96 | b | 43.26 | 56.90 | |||||||||
1930 | 19.77 | a | 43.32 | 47.81 | 60.17 | 61.16 | 68.77 | 81.39 | 80.97 | 69.37 | 54.42 | ----- | z | 32.58 | 56.34 | a | ||||||||||
1931 | 39.03 | a | 38.96 | 46.43 | a | 56.13 | 69.03 | 70.07 | 82.23 | 80.55 | 67.70 | 57.45 | 39.13 | 33.90 | 56.72 | |||||||||||
1932 | 34.63 | a | 37.52 | 43.90 | 56.17 | g | 62.32 | 75.67 | 77.42 | 78.10 | 73.23 | 58.94 | 48.07 | a | 31.81 | 56.51 | a | |||||||||
1933 | ----- | z | 35.81 | a | 43.71 | 57.87 | 57.58 | 71.10 | 81.81 | 80.77 | 64.57 | 62.47 | a | 50.21 | a | 41.03 | 58.81 | a | ||||||||
1934 | 44.23 | 46.11 | 55.94 | 63.97 | 68.00 | 74.23 | 80.23 | 82.10 | 68.76 | a | 57.77 | a | 45.57 | 36.29 | 60.26 | |||||||||||
1935 | 37.70 | a | 42.71 | 43.13 | a | 52.14 | b | 64.39 | 71.76 | a | 79.40 | a | 77.52 | 75.28 | a | 60.89 | c | 44.10 | 33.70 | a | 56.89 | |||||
1936 | ----- | z | ----- | z | 43.58 | 60.10 | 69.42 | 72.60 | 82.03 | 80.23 | 70.90 | a | 65.68 | 47.79 | a | 40.58 | 63.29 | b | ||||||||
1937 | 23.03 | b | 35.18 | 48.19 | 51.13 | 65.43 | a | 69.67 | 81.52 | 75.61 | 71.57 | 61.74 | 45.50 | 40.33 | a | 55.74 | ||||||||||
1938 | 35.63 | a | 35.32 | 43.90 | 55.67 | 64.53 | a | 74.50 | 84.47 | a | 78.03 | a | 77.60 | 57.61 | 41.60 | 39.10 | 57.33 | |||||||||
1939 | 40.73 | a | 39.85 | b | 51.48 | 60.77 | 67.84 | 69.93 | a | 81.48 | 82.74 | 72.93 | 59.55 | 53.77 | 42.50 | a | 60.30 | |||||||||
1940 | 35.19 | 37.07 | 48.52 | 53.63 | ----- | z | 76.83 | 80.26 | 80.77 | 71.67 | 60.33 | a | 39.33 | 39.74 | 56.67 | a | ||||||||||
1941 | 37.16 | 43.75 | 54.77 | 60.33 | 64.81 | 72.17 | 87.58 | 81.32 | 66.13 | 58.43 | a | 48.87 | 38.10 | a | 59.45 | |||||||||||
1942 | 29.45 | 38.64 | 48.58 | 59.07 | 62.45 | 68.77 | 84.90 | 85.74 | 78.20 | 66.48 | 40.03 | 38.58 | 58.41 | |||||||||||||
1943 | 29.58 | 40.14 | 44.32 | 58.03 | 60.06 | ----- | z | ----- | z | ----- | z | 77.54 | b | 58.10 | 43.77 | d | 35.42 | 49.66 | c | |||||||
1944 | 36.39 | 38.14 | 46.87 | 55.17 | 64.81 | 70.67 | 82.59 | d | 81.05 | k | 76.07 | a | 66.87 | 43.00 | u | 31.66 | b | 56.92 | b | |||||||
1945 | 36.00 | 41.36 | 42.94 | 53.67 | 64.06 | 72.37 | 86.29 | 84.43 | a | 71.10 | 64.00 | 40.59 | a | 35.17 | a | 57.66 | ||||||||||
1946 | 39.06 | 40.56 | a | 46.65 | 59.07 | 70.29 | c | 69.70 | 81.97 | a | 84.04 | c | 70.93 | a | 52.43 | a | 42.97 | a | 42.83 | a | 58.37 | |||||
1947 | 36.17 | a | 44.71 | 53.10 | 60.25 | b | 73.69 | b | 71.36 | e | 81.33 | a | 80.61 | 74.10 | a | 55.29 | 45.03 | a | 39.43 | a | 59.59 | |||||
1948 | 36.45 | 35.86 | 42.48 | b | 51.86 | b | 61.58 | e | 75.07 | a | 77.93 | a | 77.59 | i | 70.70 | c | 59.32 | 43.17 | 29.87 | 53.12 | a | |||||
1949 | 24.48 | 35.00 | 46.90 | b | 63.67 | 70.94 | 74.17 | 81.61 | c | 82.21 | b | 73.38 | d | 57.96 | h | 49.58 | k | 36.39 | 58.87 | b | ||||||
1950 | 20.03 | 38.39 | 43.48 | 57.03 | 67.60 | a | 69.37 | 82.07 | b | 84.29 | 75.57 | 56.07 | c | 44.17 | 43.26 | h | 58.01 | a | ||||||||
1951 | 31.10 | 41.70 | h | 46.15 | d | 64.21 | b | 63.29 | x | 73.93 | a | 83.62 | b | 80.76 | f | 75.43 | b | 58.13 | a | 42.96 | d | 35.61 | c | 56.79 | c | |
1952 | 32.08 | f | 41.20 | d | ----- | z | 64.71 | i | 66.10 | b | 69.15 | c | 85.54 | c | 82.38 | b | 79.92 | e | ----- | z | ----- | z | ----- | z | 70.71 | f |
1953 | ----- | z | ----- | z | 48.96 | c | 53.17 | a | 60.57 | c | 64.50 | d | 81.76 | b | ----- | z | ----- | z | 57.71 | n | 47.93 | 42.39 | 57.04 | e | ||
1954 | 34.71 | 39.57 | 42.94 | 52.93 | b | 65.58 | 66.80 | ----- | z | ----- | z | ----- | z | ----- | z | 48.08 | r | 37.39 | 48.56 | e | ||||||
1955 | 35.71 | 37.75 | 38.70 | a | 47.33 | 58.87 | 72.40 | 76.20 | a | 81.68 | 71.93 | 57.10 | 37.77 | 33.61 | 54.09 | |||||||||||
1956 | 34.39 | 32.66 | 43.29 | 59.00 | 66.90 | 67.27 | 83.06 | 79.87 | 72.70 | 54.61 | 41.80 | 41.26 | 56.40 | |||||||||||||
1957 | 25.43 | a | 37.93 | 44.10 | 56.00 | 66.77 | 73.07 | 78.06 | 75.68 | 74.73 | 53.23 | 46.53 | 42.29 | 56.15 | ||||||||||||
1958 | 38.19 | 46.57 | 45.00 | 52.03 | 72.42 | 76.52 | a | 85.90 | 85.94 | 70.33 | 64.68 | 42.59 | a | 42.48 | 60.22 | |||||||||||
1959 | 36.27 | a | 37.15 | b | 47.90 | 57.53 | 60.73 | a | 73.50 | 85.00 | ----- | z | 63.93 | 56.89 | l | 43.86 | a | ----- | z | 56.21 | c | |||||
1960 | 35.17 | b | 39.31 | 46.84 | 53.97 | 60.58 | 74.73 | 89.06 | 76.89 | c | 74.40 | 61.13 | 43.90 | 36.84 | 57.74 | |||||||||||
1961 | 38.45 | 43.14 | 46.29 | 54.30 | 61.61 | 79.50 | 85.45 | 87.03 | 68.60 | 57.52 | 42.67 | 37.42 | 58.50 | |||||||||||||
1962 | 37.37 | a | 40.18 | 43.65 | 59.73 | 58.19 | 72.93 | a | 84.42 | 78.26 | 76.80 | 60.36 | c | 46.57 | 41.70 | a | 58.35 | |||||||||
1963 | 33.65 | 49.86 | 47.65 | 50.37 | 63.52 | b | 71.26 | c | 76.45 | 81.48 | 77.47 | 60.77 | 44.33 | 36.61 | 57.78 | |||||||||||
1964 | 38.06 | 45.03 | 44.97 | 53.20 | 63.00 | 70.27 | 80.48 | 76.77 | 69.60 | 60.39 | 40.17 | 33.52 | 56.29 | |||||||||||||
1965 | 37.42 | 43.82 | 47.32 | 57.60 | 64.32 | 74.20 | 81.42 | ----- | z | 68.97 | 66.40 | a | 46.63 | 37.94 | 56.91 | a | ||||||||||
1966 | 36.35 | 39.86 | 46.81 | 57.93 | a | 68.77 | 69.53 | 77.19 | 80.52 | 73.17 | 59.86 | c | 46.70 | 40.58 | 58.11 | |||||||||||
1967 | 40.77 | 45.61 | 45.16 | 47.63 | 63.16 | 74.67 | 83.43 | a | 88.23 | 79.34 | a | 57.42 | 47.30 | 36.67 | a | 59.12 | ||||||||||
1968 | 37.90 | 44.65 | c | 50.61 | 52.25 | b | 62.45 | b | ----- | z | 82.61 | 73.84 | 70.53 | 55.84 | 44.10 | a | 32.80 | a | 55.24 | a | ||||||
1969 | 26.76 | b | 35.15 | b | 46.55 | b | 53.28 | a | 66.58 | 75.82 | b | 78.97 | 78.57 | a | 70.97 | 54.87 | a | 49.52 | a | 35.77 | 56.07 | |||||
1970 | 34.43 | a | 43.36 | 46.73 | a | 49.41 | a | 64.29 | 76.53 | 86.71 | 85.89 | c | 70.40 | 64.52 | 47.00 | 37.52 | 58.90 | |||||||||
1971 | 43.13 | 44.23 | b | 41.34 | b | 54.76 | a | 70.11 | m | 70.38 | a | 84.23 | a | 87.17 | a | 66.41 | a | 56.00 | 45.03 | a | 34.27 | a | 57.00 | a | ||
1972 | 34.42 | 39.76 | 49.48 | 50.27 | 66.60 | a | 72.17 | a | 79.97 | 83.20 | a | 66.64 | b | 59.55 | b | 44.07 | 31.61 | 56.48 | ||||||||
1973 | 33.10 | 41.07 | a | 48.42 | 57.48 | a | 66.87 | 72.07 | b | 83.52 | ----- | z | 70.87 | 56.30 | a | 38.23 | 38.97 | a | 55.17 | a | ||||||
1974 | 30.94 | 42.48 | c | 45.36 | c | 52.86 | a | 58.17 | a | 76.60 | 79.04 | c | 82.43 | a | 77.04 | b | 62.71 | c | 45.56 | c | 40.52 | 57.81 | ||||
1975 | 36.17 | a | 36.70 | a | 42.86 | c | 50.24 | a | 63.45 | 70.80 | e | 85.06 | 75.75 | c | 75.77 | d | 54.97 | a | 42.50 | 40.03 | b | 56.19 | ||||
1976 | 41.23 | a | 38.54 | a | 43.60 | a | 52.60 | 64.69 | e | 68.71 | b | 80.48 | f | 76.00 | 75.07 | a | 62.40 | a | 48.63 | 43.53 | a | 55.91 | a | |||
1977 | 32.87 | 42.73 | b | 48.39 | 63.70 | 58.45 | 78.24 | a | 80.03 | a | 84.52 | b | 64.87 | 59.68 | c | 41.33 | c | 36.28 | b | 57.59 | ||||||
1978 | 35.26 | 41.89 | a | 50.83 | b | 52.14 | b | 58.86 | b | 72.80 | e | 79.13 | a | 77.10 | a | 65.85 | d | 63.00 | 39.70 | 34.59 | b | 55.93 | ||||
1979 | 25.52 | b | 37.23 | b | 50.21 | b | 53.69 | a | 67.83 | a | 73.79 | a | 82.13 | a | 81.50 | a | 75.18 | b | 60.90 | a | 40.27 | 41.64 | c | 57.49 | ||
1980 | 29.79 | c | 37.25 | a | 45.57 | a | 56.59 | a | 61.67 | a | 64.48 | a | 78.90 | a | 76.77 | 70.97 | a | 61.74 | 45.10 | a | 43.86 | c | 56.06 | |||
1981 | 39.26 | d | 38.95 | h | 51.22 | d | 54.52 | e | 61.19 | e | 65.78 | c | 77.48 | 85.63 | a | 72.38 | d | 57.72 | f | 46.23 | d | 37.00 | b | 59.07 | b | |
1982 | 35.86 | b | 36.68 | c | 46.04 | c | 49.75 | b | 62.10 | b | 73.14 | b | 77.74 | d | 80.00 | c | 67.50 | b | 54.75 | c | 39.24 | a | 34.41 | b | 54.77 | |
1983 | 41.60 | a | 41.54 | d | 48.63 | d | 53.30 | c | 65.77 | a | 69.17 | 73.46 | c | 81.74 | 67.60 | 59.92 | g | 46.25 | f | 26.33 | d | 56.91 | b | |||
1984 | 39.97 | 42.48 | 49.50 | a | 51.29 | b | 57.90 | 66.17 | 81.65 | 81.40 | a | 66.33 | c | 53.48 | 39.97 | 33.33 | a | 55.29 | ||||||||
1985 | 29.03 | 36.00 | 45.33 | a | 57.03 | 65.06 | 72.37 | 87.68 | 77.42 | 63.87 | 55.00 | 30.57 | 27.42 | 53.90 | ||||||||||||
1986 | 39.55 | 39.39 | 52.42 | 53.87 | 63.32 | 78.20 | 74.68 | 85.68 | 64.70 | 62.35 | 43.90 | 34.13 | 57.68 | |||||||||||||
1987 | 34.42 | 42.46 | 47.63 | a | 61.10 | 67.35 | 74.93 | a | 77.39 | 79.48 | 77.10 | 66.48 | 47.93 | a | 34.90 | 59.27 | ||||||||||
1988 | 34.23 | 44.79 | 48.35 | 57.27 | 62.23 | 69.77 | 80.35 | 80.42 | 72.50 | 67.58 | 43.40 | 38.71 | 58.30 | |||||||||||||
1989 | 38.84 | 29.07 | 43.52 | 57.14 | a | 62.65 | 74.33 | 78.48 | 75.58 | 72.87 | 58.26 | 48.17 | 41.26 | 56.68 | ||||||||||||
1990 | 38.63 | a | 38.39 | 51.19 | 61.77 | 63.52 | ----- | z | 84.68 | 82.23 | ----- | z | 57.26 | 48.03 | 30.13 | 55.58 | b | |||||||||
1991 | 37.03 | 48.75 | 45.48 | 56.23 | 62.77 | 68.00 | 83.61 | 85.35 | 77.60 | 62.39 | 45.10 | 38.32 | 59.22 | |||||||||||||
1992 | 39.58 | 46.14 | 54.61 | 58.03 | a | 71.30 | a | 81.63 | ----- | z | 83.24 | b | 69.77 | 62.00 | 42.67 | 33.00 | 58.36 | a | ||||||||
1993 | 27.55 | 32.04 | 47.03 | 53.37 | 70.06 | 71.80 | 73.32 | 78.48 | 75.47 | 64.00 | 41.28 | a | 35.13 | 55.79 | ||||||||||||
1994 | 45.71 | 36.79 | 52.13 | 60.53 | 67.13 | 73.60 | ----- | z | 83.00 | 77.40 | 58.65 | ----- | z | 37.35 | 59.23 | b | ||||||||||
1995 | 36.48 | 45.75 | ----- | z | ----- | z | 66.48 | ----- | z | 80.71 | ----- | z | 75.83 | ----- | z | 49.86 | a | 36.00 | 55.87 | e | ||||||
1996 | 37.55 | 37.72 | ----- | z | 55.53 | 60.52 | 73.34 | a | 85.13 | a | 82.94 | 71.07 | 58.48 | 43.33 | 34.70 | a | 58.21 | a | ||||||||
1997 | 37.87 | 40.82 | ----- | z | 54.07 | 67.65 | 71.20 | ----- | z | ----- | z | ----- | z | 58.39 | ----- | z | 38.71 | 52.67 | e | |||||||
1998 | 38.19 | 43.86 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 80.43 | 60.79 | b | ----- | z | ----- | z | 55.82 | h | |||
1999 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2000 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 38.34 | a | 34.93 | b | 36.64 | j |
2001 | 35.40 | a | 38.85 | b | 50.10 | a | 52.00 | d | 69.45 | 70.73 | d | 81.40 | a | 82.94 | 76.12 | f | 57.54 | c | 45.78 | c | 34.93 | a | 56.28 | a | ||
2002 | 36.96 | d | 40.88 | d | 43.12 | e | 53.76 | a | 61.11 | d | 72.79 | b | 83.24 | j | 78.38 | e | ----- | z | 56.89 | c | 45.21 | a | 36.30 | a | 52.54 | b |
2003 | 39.03 | b | 41.93 | a | 48.38 | b | 52.07 | 60.00 | j | 75.68 | h | 86.85 | k | 81.71 | c | 72.19 | c | 60.90 | a | 39.17 | a | 36.10 | 52.39 | c | ||
2004 | 31.48 | b | 38.12 | d | 52.03 | a | 56.27 | 62.42 | 70.33 | 82.56 | f | 83.35 | 70.82 | b | 57.57 | a | 47.48 | a | 41.13 | 55.55 | a | |||||
2005 | 37.87 | 43.56 | c | 50.24 | b | 54.17 | 62.11 | d | 70.48 | i | 84.65 | k | 81.94 | m | 68.00 | a | 56.11 | d | 38.57 | b | 31.68 | 49.15 | c | |||
2006 | 39.62 | b | 36.42 | d | 44.24 | b | 53.45 | h | 65.18 | i | 69.27 | d | 81.21 | c | 78.04 | d | 68.78 | c | 56.45 | b | 39.76 | e | 34.19 | 54.80 | b | |
2007 | 32.20 | a | 38.65 | b | 47.72 | f | 52.83 | f | 63.61 | m | 70.86 | p | 84.65 | n | 77.86 | q | 66.00 | w | 56.90 | j | 44.90 | i | 34.25 | g | 35.43 | j |
2008 | 29.59 | n | 40.76 | 46.80 | a | 51.81 | d | 62.74 | 67.69 | a | 80.97 | 79.29 | c | 72.07 | a | 57.35 | e | 49.03 | 34.26 | 58.43 | a | |||||
2009 | 35.29 | 39.25 | 40.48 | 53.93 | 62.74 | 71.97 | 82.03 | 82.52 | 74.77 | 52.00 | 44.00 | a | 30.52 | 55.79 | ||||||||||||
2010 | 38.35 | 44.32 | 50.23 | 53.27 | 60.87 | 70.97 | 83.48 | 80.84 | 69.20 | 56.94 | 41.70 | 35.19 | 57.11 | |||||||||||||
2011 | 39.52 | 38.00 | 43.29 | 48.50 | 57.81 | 68.80 | 75.16 | 81.71 | 74.70 | 57.61 | 42.50 | 40.74 | 55.69 | |||||||||||||
2012 | 36.06 | 39.66 | 43.32 | 54.20 | 59.19 | 64.50 | 78.65 | 82.03 | 74.07 | a | 56.29 | 43.93 | 34.42 | 55.53 | ||||||||||||
2013 | 33.19 | 41.61 | 46.29 | 52.47 | 64.81 | 67.47 | 84.00 | 79.48 | 68.40 | 53.52 | 43.33 | 37.74 | 56.03 | |||||||||||||
2014 | 38.65 | 33.32 | 46.94 | 52.33 | 63.25 | c | 69.47 | 84.52 | 80.16 | 69.40 | 60.57 | a | 42.50 | 36.90 | 56.50 | |||||||||||
2015 | 39.81 | 45.82 | 52.45 | 51.26 | k | 64.67 | a | 79.57 | 85.45 | 81.19 | 69.13 | 62.81 | 41.00 | 33.71 | 59.60 | a | ||||||||||
2016 | 35.45 | 45.38 | 48.97 | 61.23 | 64.84 | 76.47 | 80.23 | 84.39 | 73.63 | 56.77 | 53.03 | 34.06 | 59.54 | |||||||||||||
2017 | 29.61 | 36.71 | 46.90 | 53.57 | 65.61 | 75.60 | 87.68 | 88.76 | n | ----- | z | 59.16 | 45.97 | 34.87 | 53.57 | b | ||||||||||
2018 | 40.81 | 42.00 | 48.19 | 56.67 | 73.36 | f | 74.77 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 52.49 | g | |||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 35.28 | 40.18 | 47.02 | 55.24 | 64.24 | 71.97 | 81.57 | 81.08 | 71.91 | 59.20 | 44.12 | 36.63 | 57.29 | |||||||||||||
S.D. | 5.05 | 3.98 | 3.37 | 3.89 | 3.65 | 3.53 | 3.39 | 3.16 | 4.01 | 3.63 | 3.89 | 3.77 | 1.60 | |||||||||||||
SKEW | -1.00 | -0.13 | 0.29 | 0.39 | 0.28 | 0.18 | -0.22 | -0.03 | -0.02 | 0.34 | -0.15 | -0.13 | 0.08 | |||||||||||||
MAX | 45.71 | 49.86 | 55.94 | 64.21 | 73.69 | 81.63 | 89.06 | 88.23 | 80.43 | 67.58 | 53.77 | 43.86 | 60.30 | |||||||||||||
MIN | 19.77 | 29.07 | 38.70 | 47.33 | 57.58 | 64.48 | 73.32 | 73.84 | 63.87 | 52.00 | 30.57 | 26.33 | 53.90 | |||||||||||||
YRS | 83 | 85 | 83 | 82 | 81 | 81 | 76 | 73 | 80 | 79 | 79 | 84 | 48 |