YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1922 | ----- | z | ----- | z | ----- | z | ----- | z | 66.25 | k | 78.10 | 85.35 | 81.42 | 78.07 | 63.58 | 41.67 | 32.58 | 65.82 | e | |||||||
1923 | 38.29 | 34.25 | 47.10 | 55.83 | 62.13 | 65.57 | 80.26 | 81.26 | 77.40 | 58.94 | 54.10 | 36.84 | 57.66 | |||||||||||||
1924 | 31.58 | 51.03 | 46.48 | 55.14 | a | 73.32 | 74.27 | 84.77 | 76.26 | 70.07 | 63.84 | 46.38 | a | 31.23 | 58.70 | |||||||||||
1925 | ----- | z | ----- | z | ----- | z | ----- | z | 67.59 | d | 73.20 | 86.58 | 81.00 | 70.43 | 60.48 | 47.97 | a | 40.84 | 66.01 | d | ||||||
1926 | 35.29 | 45.82 | 55.63 | a | 65.33 | 64.03 | 78.57 | 85.84 | 79.81 | 65.87 | 64.61 | 51.30 | 36.40 | a | 60.71 | |||||||||||
1927 | 34.97 | 42.29 | 47.00 | 56.17 | 59.16 | 73.37 | 84.45 | 81.94 | 66.00 | 62.06 | 48.07 | 30.42 | 57.16 | |||||||||||||
1928 | 36.13 | 40.10 | 51.23 | 53.23 | 69.23 | 71.27 | 85.52 | 82.23 | 74.73 | 60.81 | 46.83 | 35.19 | 58.87 | |||||||||||||
1929 | 25.74 | 31.39 | 46.23 | 51.17 | 65.90 | a | 70.67 | 84.84 | 88.97 | 69.63 | 68.03 | 49.47 | 44.61 | 58.05 | ||||||||||||
1930 | 21.61 | 44.14 | 50.68 | 62.73 | 61.90 | 72.33 | 84.87 | 84.61 | 73.70 | 59.03 | 45.10 | a | 30.80 | a | 57.63 | |||||||||||
1931 | 36.68 | 40.82 | 47.87 | 58.90 | 71.29 | 72.07 | 86.26 | 86.13 | 71.23 | 62.03 | 40.27 | 32.52 | 58.84 | |||||||||||||
1932 | 30.77 | a | 35.55 | 44.39 | 57.60 | 62.61 | 76.53 | 80.65 | 80.61 | 77.43 | 62.19 | 49.59 | a | 32.06 | 57.50 | |||||||||||
1933 | 35.39 | 33.57 | 44.55 | 54.63 | 53.87 | 68.93 | 82.87 | 82.61 | 70.00 | 69.29 | 50.83 | 45.58 | 57.68 | |||||||||||||
1934 | 46.03 | 52.04 | 60.48 | 66.47 | 71.81 | 72.07 | 83.90 | 86.19 | 73.33 | 64.45 | 51.30 | 38.00 | 63.84 | |||||||||||||
1935 | 33.58 | 38.61 | 43.87 | 52.03 | 64.23 | 73.40 | 82.00 | 84.00 | 79.83 | 60.48 | 42.73 | 35.55 | 57.53 | |||||||||||||
1936 | 33.87 | 31.03 | 46.68 | 60.77 | 69.97 | 74.43 | 84.48 | 82.84 | 72.37 | 67.00 | 46.23 | 36.48 | 58.85 | |||||||||||||
1937 | 18.84 | 35.96 | 47.00 | 51.10 | 66.74 | 67.90 | 82.84 | 78.16 | 77.20 | 67.42 | 50.00 | 43.10 | 57.19 | |||||||||||||
1938 | 40.55 | 42.89 | 47.84 | 58.93 | 66.52 | 76.13 | 85.87 | 82.00 | 80.07 | 62.81 | 43.80 | 40.68 | 60.67 | |||||||||||||
1939 | 41.13 | 37.04 | 49.32 | 64.23 | 69.61 | 70.53 | 86.58 | 87.52 | 77.47 | 63.35 | 56.13 | 46.42 | 62.44 | |||||||||||||
1940 | 36.65 | 42.69 | 54.77 | 59.77 | 71.26 | 81.07 | 83.81 | 83.68 | 73.37 | 63.74 | 38.37 | 41.94 | 60.92 | |||||||||||||
1941 | 44.23 | 48.64 | 56.68 | 59.50 | 63.48 | 70.00 | 84.87 | 79.19 | 64.77 | 59.58 | 52.67 | 42.13 | 60.48 | |||||||||||||
1942 | 31.58 | 36.96 | 47.58 | 59.33 | 59.68 | 68.03 | 84.13 | 84.94 | 78.43 | 66.06 | 46.77 | 36.45 | 58.33 | |||||||||||||
1943 | 30.74 | 40.50 | 46.77 | 60.93 | 59.58 | 65.80 | 83.26 | 80.84 | 80.43 | 61.77 | 49.83 | 36.81 | 58.11 | |||||||||||||
1944 | 38.26 | 38.31 | 47.23 | 56.45 | a | 65.61 | 71.17 | 84.29 | 82.58 | 76.80 | 71.16 | 44.37 | 37.00 | 59.44 | ||||||||||||
1945 | 36.45 | 41.25 | 44.61 | 53.83 | 63.71 | 70.33 | 87.23 | 84.48 | 71.73 | 66.29 | 44.10 | 34.97 | 58.25 | |||||||||||||
1946 | 36.58 | 40.71 | 47.81 | 62.33 | 66.68 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 50.82 | g | |||||
1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 77.52 | d | 77.88 | e | 73.62 | n | 62.78 | m | 45.00 | o | 27.00 | i | 77.70 | j |
1949 | 18.64 | c | 40.38 | d | 48.37 | d | 65.40 | e | 67.15 | d | 72.80 | o | 85.07 | p | 86.08 | s | 72.43 | p | ----- | z | 51.61 | l | 39.93 | c | 46.64 | f |
1950 | 28.27 | a | 39.32 | 43.45 | 56.96 | g | 65.30 | h | 69.75 | f | 84.19 | 85.03 | 75.87 | 60.42 | 46.90 | 44.19 | 56.41 | c | ||||||||
1951 | 31.71 | 41.04 | 44.03 | 62.47 | 66.00 | 73.10 | 85.52 | 82.55 | 77.63 | 57.74 | 45.27 | 32.19 | 58.27 | |||||||||||||
1952 | 31.10 | b | 35.52 | 43.13 | 63.43 | 63.00 | 69.57 | 85.55 | 83.10 | 79.67 | 73.65 | 46.20 | 35.57 | a | 59.12 | |||||||||||
1953 | 43.67 | a | 42.50 | 47.68 | 54.70 | 60.93 | a | 65.57 | 83.93 | c | 80.74 | 80.50 | 65.55 | 51.53 | 39.20 | a | 59.71 | |||||||||
1954 | 38.10 | 50.21 | 47.71 | 58.50 | 68.97 | a | 67.33 | 82.55 | 76.68 | 72.17 | 63.10 | 52.04 | f | ----- | z | 62.53 | b | |||||||||
1955 | ----- | z | ----- | z | ----- | z | 49.03 | a | 59.94 | 74.76 | a | 78.55 | 84.07 | d | 71.50 | f | 62.21 | c | 39.69 | d | 37.33 | a | 60.70 | d | ||
1956 | 36.65 | 33.10 | 45.84 | 58.90 | 65.06 | 70.33 | 84.84 | f | 81.26 | l | 76.13 | 57.55 | 46.37 | 41.23 | 53.12 | b | ||||||||||
1957 | 24.55 | 38.25 | 47.90 | 56.20 | 62.79 | c | 72.73 | d | 80.61 | 78.83 | s | 76.09 | g | 55.81 | 45.17 | 40.61 | 52.46 | b | ||||||||
1958 | 38.84 | 48.93 | a | 45.52 | 52.68 | b | 71.33 | j | 74.25 | b | 83.95 | k | ----- | z | ----- | z | 68.42 | e | 46.83 | 43.16 | 52.33 | d | ||||
1959 | 41.32 | 39.22 | e | ----- | z | ----- | z | ----- | z | 76.71 | p | 87.10 | 80.52 | 69.07 | 61.70 | a | 49.57 | 41.16 | 58.71 | d | ||||||
1960 | 31.23 | a | 39.00 | b | 51.38 | b | 57.31 | a | 60.35 | 75.23 | d | 88.39 | c | 77.16 | 75.30 | 60.37 | a | 44.00 | 38.21 | b | 58.16 | |||||
1961 | 41.37 | a | 46.19 | a | 50.42 | 54.73 | 60.52 | 80.73 | 87.59 | b | 89.05 | i | 70.87 | 61.07 | c | 45.72 | a | 39.00 | a | 58.02 | a | |||||
1962 | 35.32 | 41.78 | a | 45.20 | a | 64.31 | a | 60.29 | 74.50 | 84.06 | 81.35 | 80.33 | 63.33 | a | 50.37 | 42.65 | 60.29 | |||||||||
1963 | 32.00 | a | 54.43 | 50.55 | 52.33 | 65.32 | 72.70 | 80.90 | b | 84.39 | 82.60 | 66.19 | 50.00 | a | 38.77 | 60.85 | ||||||||||
1964 | 38.00 | 42.21 | 46.42 | 57.34 | a | ----- | z | 70.37 | 84.03 | 80.20 | a | 74.70 | 69.90 | a | 45.63 | 38.94 | 58.89 | a | ||||||||
1965 | 37.81 | 46.61 | 51.84 | 60.93 | 66.71 | 76.96 | b | 84.58 | 81.74 | 70.59 | a | 71.06 | 52.66 | a | 39.68 | 61.76 | ||||||||||
1966 | 40.71 | 42.11 | 53.81 | 61.90 | 72.23 | 72.03 | 80.97 | 83.90 | 77.07 | 63.29 | 50.66 | a | 40.55 | 61.60 | ||||||||||||
1967 | 41.19 | 46.50 | 47.16 | 51.20 | 64.48 | 73.90 | 86.16 | 91.16 | 82.40 | 62.77 | 47.80 | 34.84 | 60.80 | |||||||||||||
1968 | 37.71 | 47.55 | 55.97 | 54.83 | 66.33 | a | 74.33 | 86.45 | 75.90 | 73.23 | 60.84 | 45.00 | 37.19 | 59.61 | ||||||||||||
1969 | 33.06 | 40.18 | 49.06 | 59.41 | h | 66.90 | j | 76.00 | h | 81.14 | b | 82.48 | 74.60 | 53.10 | 49.70 | 40.32 | 55.96 | c | ||||||||
1970 | 35.87 | a | 47.39 | 44.94 | 47.20 | 63.77 | 75.23 | 84.39 | 86.19 | 67.27 | 61.03 | 47.74 | c | 32.90 | 57.83 | |||||||||||
1971 | 35.57 | a | 43.79 | 43.94 | 53.73 | 64.50 | a | 67.30 | 84.42 | 89.28 | b | 67.33 | 56.29 | 43.43 | 33.66 | b | 56.94 | |||||||||
1972 | 36.04 | e | 40.10 | 51.74 | 51.83 | 64.94 | 73.90 | 81.48 | 84.35 | 68.23 | 60.39 | 46.31 | a | 29.63 | a | 57.41 | ||||||||||
1973 | 35.58 | 43.11 | 47.87 | a | 53.60 | 66.90 | 75.47 | 84.45 | 83.45 | 72.72 | a | 59.76 | b | 41.48 | a | 42.16 | 58.88 | |||||||||
1974 | 31.56 | d | 44.61 | 49.29 | 53.69 | a | 60.42 | 78.20 | 80.81 | 82.20 | a | 79.03 | 67.10 | 46.73 | 36.75 | c | 59.20 | |||||||||
1975 | 36.77 | 39.74 | a | 45.45 | 49.00 | 62.84 | 68.90 | 81.13 | a | 75.90 | 77.62 | a | 58.26 | 45.62 | a | 41.32 | 56.88 | |||||||||
1976 | 36.48 | 40.28 | 45.70 | a | 53.43 | 66.00 | 69.03 | 81.07 | a | 73.42 | 75.67 | 64.74 | 52.13 | 41.58 | 58.29 | |||||||||||
1977 | 30.84 | 48.89 | 44.06 | 62.70 | 58.32 | 76.80 | 80.61 | 85.39 | 68.13 | 61.61 | 44.30 | 41.03 | 58.56 | |||||||||||||
1978 | 39.87 | 44.32 | 54.20 | a | 53.03 | 59.97 | 73.00 | 81.52 | 78.23 | 68.67 | 67.47 | a | 41.70 | 31.03 | 57.75 | |||||||||||
1979 | 23.84 | 38.43 | 49.94 | 54.17 | 65.32 | 75.90 | 84.94 | 82.58 | 79.07 | 65.61 | 43.83 | 42.87 | 58.87 | |||||||||||||
1980 | 35.48 | 44.83 | 46.00 | a | 60.37 | 63.47 | a | 65.97 | 82.32 | 78.26 | 74.54 | b | 65.61 | 47.53 | 42.87 | 58.94 | ||||||||||
1981 | 45.26 | 44.93 | 50.93 | b | 54.67 | 62.77 | 68.33 | 79.68 | 87.94 | 75.73 | 58.84 | 50.50 | 40.52 | 60.01 | ||||||||||||
1982 | 34.80 | a | 37.43 | 46.97 | a | 53.57 | 62.74 | 74.73 | 80.56 | d | 83.57 | a | 69.93 | 58.50 | a | 43.87 | 36.23 | 56.91 | ||||||||
1983 | 42.03 | 46.54 | 50.70 | a | 54.27 | 65.94 | 69.37 | 76.38 | b | 84.94 | 71.54 | d | 63.68 | 46.40 | 27.55 | b | 58.28 | |||||||||
1984 | 34.32 | 40.69 | 48.06 | 52.66 | a | 60.68 | 68.80 | 84.19 | 85.81 | 69.97 | 56.48 | 44.30 | 32.38 | b | 56.53 | |||||||||||
1985 | 26.74 | 35.82 | 43.81 | 60.40 | 66.10 | 75.67 | 89.48 | 79.00 | 64.97 | 58.71 | 32.07 | b | 25.74 | 54.88 | ||||||||||||
1986 | 41.57 | a | 43.00 | 56.74 | 56.39 | b | 64.61 | 81.50 | 77.42 | 87.81 | 65.53 | 66.00 | 46.00 | a | 39.68 | 60.52 | ||||||||||
1987 | 32.32 | 40.21 | 50.05 | l | 67.23 | h | 68.43 | a | 77.27 | 79.61 | 81.48 | 80.23 | 70.84 | 49.10 | 37.48 | 61.70 | b | |||||||||
1988 | 35.45 | 45.31 | 50.48 | 60.60 | 64.65 | 71.73 | 83.61 | 83.77 | 76.13 | 75.06 | 46.50 | 35.73 | a | 60.75 | ||||||||||||
1989 | 35.23 | a | 32.69 | b | 47.65 | 59.96 | d | 64.37 | d | 75.60 | 81.20 | a | 78.10 | 75.64 | b | 60.26 | 49.53 | 42.55 | 58.57 | |||||||
1990 | 40.48 | 41.25 | 52.77 | 62.97 | 62.68 | 71.17 | 83.77 | a | 80.17 | a | 79.57 | 59.65 | 48.62 | a | 30.23 | 59.44 | ||||||||||
1991 | 33.97 | a | 52.57 | 47.29 | 54.83 | a | 60.71 | c | ----- | z | ----- | z | 83.81 | ----- | z | ----- | z | ----- | z | 45.52 | 54.10 | e | ||||
1992 | ----- | z | 52.55 | 58.19 | ----- | z | ----- | z | 78.40 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 63.05 | i | |||
1993 | ----- | z | ----- | z | ----- | z | 54.34 | a | 68.10 | b | 67.83 | 70.62 | b | 76.17 | a | 75.40 | 72.41 | b | 45.13 | g | 40.69 | e | 65.70 | d | ||
1994 | 44.43 | c | 41.88 | b | 56.85 | e | 59.14 | b | 65.67 | g | 71.67 | i | 85.48 | d | 84.79 | g | 80.80 | e | 61.45 | b | 39.17 | g | 38.14 | b | 58.52 | d |
1995 | 44.04 | c | 50.04 | e | 49.96 | e | 54.96 | d | 64.13 | 68.17 | a | 79.48 | f | 80.18 | i | 77.86 | b | 59.20 | a | 50.41 | h | 41.73 | a | 56.68 | c | |
1996 | 39.97 | a | 42.40 | d | 53.58 | l | 58.59 | a | 58.75 | c | 71.97 | a | 85.87 | a | 87.00 | g | 71.85 | c | 61.00 | d | 50.67 | c | 39.20 | a | 58.03 | b |
1997 | 39.04 | f | 44.22 | a | 49.77 | i | 55.90 | a | 69.20 | f | 71.30 | c | 79.82 | c | 84.59 | d | 76.19 | d | 62.48 | h | 53.55 | j | 41.50 | e | 64.79 | e |
1998 | 40.93 | b | 45.62 | g | 53.38 | g | 56.86 | a | 61.36 | f | 71.25 | f | 81.67 | v | 86.77 | i | 78.83 | a | 61.81 | 46.25 | f | 37.73 | e | 55.23 | g | |
1999 | 41.67 | g | 42.05 | i | 50.42 | e | 53.41 | h | 60.70 | d | 71.85 | d | 79.86 | c | 85.14 | j | 75.75 | f | 66.45 | b | 56.84 | e | 41.53 | a | 61.09 | e |
2000 | 38.72 | b | 47.67 | e | 49.56 | f | 63.04 | c | 65.54 | c | 73.62 | a | 81.07 | b | 84.48 | j | 75.12 | f | 61.43 | c | 40.60 | e | 39.58 | g | 58.96 | d |
2001 | 37.04 | f | 42.23 | b | 50.81 | o | 54.35 | j | 71.70 | u | ----- | z | ----- | z | ----- | z | 79.00 | m | 66.07 | c | 49.00 | k | 39.15 | r | 54.15 | j |
2002 | 36.93 | q | 44.20 | r | 41.67 | y | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 40.92 | r | ----- | z |
2003 | 46.00 | o | 48.20 | w | ----- | z | 52.62 | v | 64.56 | v | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2004 | ----- | z | ----- | z | ----- | z | 64.45 | s | 64.11 | v | 72.60 | o | 84.71 | j | 83.00 | i | 69.79 | p | ----- | z | 50.62 | v | 45.67 | y | ----- | z |
2005 | 41.13 | p | 49.27 | q | 47.36 | q | ----- | z | 64.86 | x | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2006 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 39.73 | i | ----- | z |
2007 | 36.70 | d | 44.54 | d | 58.00 | b | 57.04 | c | 67.00 | e | 70.38 | v | 89.69 | e | 88.33 | y | ----- | z | 63.41 | b | 56.86 | w | 34.43 | x | 59.48 | e |
2008 | 35.67 | v | ----- | z | ----- | z | ----- | z | ----- | z | 77.20 | y | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2009 | ----- | z | ----- | z | 56.25 | w | 58.00 | h | 65.58 | l | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2010 | ----- | z | ----- | z | ----- | z | 57.14 | h | 57.10 | 67.48 | a | 80.70 | a | 80.29 | 72.03 | 62.10 | 47.45 | h | 39.93 | q | 69.95 | f | ||||
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 | ----- | z | ----- | z | ----- | z |
2013 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2014 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2015 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2016 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2017 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2018 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2019 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 35.51 | 42.22 | 48.96 | 57.08 | 64.37 | 72.55 | 83.21 | 82.25 | 74.25 | 63.18 | 46.91 | 37.99 | 58.93 | |||||||||||||
S.D. | 5.82 | 5.20 | 4.10 | 4.38 | 3.82 | 3.82 | 3.18 | 3.57 | 4.64 | 4.31 | 4.19 | 4.52 | 1.66 | |||||||||||||
SKEW | -0.81 | 0.11 | 0.88 | 0.14 | 0.04 | 0.20 | -0.88 | -0.06 | -0.27 | 0.51 | -0.46 | -0.51 | 0.50 | |||||||||||||
MAX | 46.03 | 54.43 | 60.48 | 66.47 | 73.32 | 81.50 | 89.69 | 91.16 | 82.60 | 75.06 | 56.84 | 46.42 | 63.84 | |||||||||||||
MIN | 18.64 | 31.03 | 43.13 | 47.20 | 53.87 | 65.57 | 70.62 | 73.42 | 64.77 | 53.10 | 32.07 | 25.74 | 54.88 | |||||||||||||
YRS | 71 | 73 | 68 | 70 | 69 | 70 | 72 | 66 | 69 | 75 | 67 | 73 | 52 |