YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1923 | ----- | z | ----- | z | 39.73 | p | 54.54 | b | 62.83 | b | 71.34 | a | 76.35 | 75.97 | a | 66.76 | a | 52.46 | c | 43.10 | a | 32.70 | f | 62.92 | d | |
1924 | 31.97 | a | 38.90 | c | 37.63 | a | 53.57 | c | 59.95 | a | 75.88 | 74.61 | 77.29 | 66.36 | a | 57.90 | 46.80 | b | 30.98 | c | 54.32 | |||||
1925 | 31.85 | a | 42.67 | a | 50.52 | 59.55 | b | 65.80 | c | 76.12 | 77.98 | a | 71.81 | 67.28 | a | 50.09 | c | 44.28 | 35.67 | d | 56.13 | |||||
1926 | 33.38 | a | 42.36 | 41.97 | b | 49.09 | a | 61.56 | 70.40 | a | 74.16 | 76.13 | a | 70.54 | c | 58.63 | a | 43.74 | a | 34.77 | c | 54.73 | ||||
1927 | 39.21 | b | 43.54 | c | 45.73 | a | 58.92 | 70.40 | a | 72.57 | b | 77.16 | 72.76 | 68.07 | b | 58.05 | 49.33 | a | 33.11 | d | 57.40 | |||||
1928 | 36.71 | 37.41 | b | 48.75 | c | 51.83 | a | 63.74 | b | 70.08 | 77.22 | a | 72.84 | 66.97 | 59.52 | c | 41.16 | a | 35.78 | b | 55.17 | |||||
1929 | 34.27 | a | 27.98 | a | 44.61 | 56.27 | 60.50 | c | 73.36 | a | 77.25 | a | 76.32 | 66.43 | 58.38 | b | 36.08 | d | 38.28 | a | 54.14 | |||||
1930 | 26.48 | f | 45.00 | 41.47 | b | 61.02 | 63.13 | a | 74.67 | 77.73 | a | 76.94 | 69.37 | 53.72 | b | 43.66 | a | 34.05 | 58.25 | a | ||||||
1931 | 35.07 | b | 41.96 | a | 42.09 | d | 52.32 | b | 60.65 | a | 75.07 | 77.58 | 73.34 | 73.80 | 58.90 | a | 44.05 | a | 37.30 | a | 56.01 | |||||
1932 | 31.80 | a | 45.71 | 41.41 | b | 56.79 | a | 65.98 | 70.70 | 78.85 | a | 76.18 | a | 64.92 | 55.66 | c | 43.88 | a | 29.43 | a | 55.11 | |||||
1933 | 39.83 | a | 34.39 | a | 47.57 | b | 53.76 | c | 64.44 | 77.45 | 80.35 | a | 74.93 | a | 71.73 | 59.00 | a | 47.84 | b | 43.44 | 57.89 | |||||
1934 | 37.82 | a | 39.75 | b | 46.36 | c | 58.17 | a | 68.33 | b | 76.82 | 82.66 | 80.00 | 67.36 | a | 61.19 | 46.70 | 37.97 | 58.59 | |||||||
1935 | 40.55 | c | 41.35 | a | 50.91 | b | 54.79 | b | 59.84 | c | 73.43 | 79.68 | 78.03 | a | 66.59 | c | 58.98 | c | 43.83 | c | 37.00 | b | 57.08 | |||
1936 | 34.31 | d | 33.61 | b | 48.75 | c | 55.98 | c | 65.53 | a | 74.67 | a | 77.82 | 79.53 | a | 68.96 | b | 56.24 | d | 43.70 | b | 39.03 | b | 56.51 | ||
1937 | 30.14 | b | 37.20 | c | 42.62 | c | 56.00 | c | 66.11 | 72.35 | 79.02 | 80.56 | 70.93 | 58.83 | a | 43.95 | 37.39 | c | 56.26 | |||||||
1938 | 37.17 | a | 39.90 | b | 50.34 | b | 56.24 | a | 65.03 | a | 73.66 | a | 77.52 | 80.19 | 70.00 | 60.58 | 43.42 | 38.76 | 57.73 | |||||||
1939 | 39.37 | 33.38 | 49.08 | 55.42 | 65.03 | 75.02 | 78.16 | 74.53 | 71.77 | 58.68 | 44.03 | 40.37 | 57.07 | |||||||||||||
1940 | 28.13 | 38.59 | 47.56 | 55.97 | 65.66 | 72.63 | 81.23 | 74.60 | 72.30 | 61.68 | 43.91 | a | 40.52 | a | 56.90 | |||||||||||
1941 | 38.97 | 41.54 | 43.68 | 54.92 | 63.44 | 69.48 | 73.95 | 74.31 | 68.13 | 57.48 | 47.73 | 39.82 | 56.12 | |||||||||||||
1942 | 36.24 | 37.15 | a | 45.32 | 55.38 | 63.29 | 73.17 | a | 76.98 | 74.24 | 65.33 | 55.60 | 49.91 | a | 39.13 | 55.98 | ||||||||||
1943 | 38.35 | 44.73 | 44.85 | a | 60.08 | 63.08 | a | 74.65 | 77.63 | 80.19 | 67.92 | 57.73 | 45.17 | c | 31.70 | a | 57.17 | |||||||||
1944 | 31.73 | 40.59 | 44.89 | 52.67 | 64.11 | 72.75 | 76.77 | 78.16 | 67.88 | 58.10 | 46.27 | 35.19 | 55.76 | |||||||||||||
1945 | 37.42 | 41.38 | 49.55 | 52.20 | 66.28 | a | 72.60 | 76.26 | 76.24 | 68.60 | 57.48 | 48.10 | 37.06 | 56.93 | ||||||||||||
1946 | 36.21 | 42.61 | 50.71 | 62.72 | a | 62.65 | a | 76.32 | 80.35 | 77.53 | 68.73 | 58.10 | 44.68 | 42.69 | 58.61 | |||||||||||
1947 | 35.11 | 36.30 | 42.87 | 52.88 | 62.53 | 73.37 | 78.87 | d | 78.15 | 73.42 | 63.89 | 41.48 | 38.10 | 56.41 | ||||||||||||
1948 | 32.35 | 35.83 | 41.10 | 61.43 | 65.52 | 75.52 | a | 78.80 | a | 76.44 | 70.53 | 58.53 | 43.28 | 41.39 | 56.73 | |||||||||||
1949 | 28.81 | 39.09 | 47.92 | 53.55 | 63.61 | 71.37 | 76.74 | 74.32 | 68.28 | 57.52 | a | 52.58 | 37.69 | 55.96 | ||||||||||||
1950 | 39.71 | c | 46.70 | 47.77 | 56.75 | 65.18 | 74.28 | 73.66 | 72.50 | 66.15 | 63.98 | 46.83 | a | 40.48 | 57.83 | |||||||||||
1951 | 36.35 | 41.86 | 45.45 | 53.83 | 63.84 | 70.25 | 79.63 | 79.05 | 69.65 | 59.18 | a | 43.65 | 39.27 | 56.84 | ||||||||||||
1952 | 41.98 | 42.95 | 44.77 | 54.25 | 64.82 | 78.82 | 77.15 | 79.61 | 68.69 | a | 57.98 | 42.25 | 36.47 | 57.48 | ||||||||||||
1953 | 45.47 | 40.50 | 52.21 | 55.15 | 64.08 | 81.98 | 79.90 | 76.55 | 71.93 | 59.52 | 47.30 | 35.69 | 59.19 | |||||||||||||
1954 | 39.94 | 48.70 | 46.11 | 61.65 | 61.74 | 76.37 | 81.47 | 77.81 | 73.17 | 60.77 | 49.77 | 44.12 | n | 61.59 | a | |||||||||||
1955 | 37.87 | 38.61 | 48.56 | 56.90 | 65.43 | b | 71.47 | 77.19 | 76.71 | 71.15 | 60.65 | 45.55 | 42.13 | 57.68 | ||||||||||||
1956 | 39.10 | 33.43 | f | 48.70 | d | 53.15 | c | 70.21 | 77.87 | 78.11 | 76.77 | 72.65 | 63.19 | 43.83 | a | 40.66 | b | 60.39 | a | |||||||
1957 | 37.11 | h | 46.98 | 46.60 | 49.83 | a | 58.02 | 71.17 | 82.95 | 78.98 | 67.22 | 55.81 | 41.12 | b | 42.92 | 58.33 | a | |||||||||
1958 | 35.24 | 39.05 | 35.63 | 50.37 | 65.66 | 75.95 | 77.42 | 77.58 | 69.37 | 56.13 | 45.17 | 38.00 | 55.46 | |||||||||||||
1959 | 32.60 | a | 37.54 | 43.60 | 53.02 | 65.11 | 74.90 | 75.47 | 77.24 | 69.42 | 53.03 | 39.80 | 38.21 | 54.99 | ||||||||||||
1960 | 30.35 | 31.48 | 40.79 | 56.35 | 62.63 | 72.59 | a | 73.52 | 74.58 | 68.27 | 56.31 | 45.65 | 33.27 | 53.82 | ||||||||||||
1961 | 33.50 | 38.00 | 43.71 | 49.62 | d | 63.48 | a | 71.83 | 73.63 | 73.97 | 64.95 | 56.58 | 39.50 | 34.61 | 53.62 | |||||||||||
1962 | 29.71 | 43.66 | 41.77 | 54.48 | 68.74 | 70.15 | 75.27 | 75.10 | 68.62 | b | 58.58 | 46.58 | 38.71 | 55.95 | ||||||||||||
1963 | 27.82 | 39.91 | 46.98 | 59.53 | 67.33 | a | 71.52 | a | 78.84 | 75.40 | 69.90 | 63.70 | a | 47.42 | 32.23 | 56.72 | ||||||||||
1964 | 35.66 | 30.71 | 41.43 | a | 54.58 | 65.82 | 72.28 | 79.65 | 75.37 | 67.20 | 57.70 | a | 44.52 | 36.74 | 55.14 | |||||||||||
1965 | 39.00 | 35.72 | a | 35.06 | 56.28 | 64.39 | 70.05 | 76.21 | 73.18 | 66.16 | a | 57.90 | 50.42 | 40.35 | 55.39 | |||||||||||
1966 | 28.67 | b | 32.84 | 47.24 | 52.95 | 62.53 | 71.15 | 80.00 | 70.73 | 66.65 | 53.92 | 48.58 | 32.90 | 54.01 | ||||||||||||
1967 | 37.60 | 37.09 | 50.19 | 57.38 | 60.03 | 70.03 | 73.05 | 71.45 | 64.50 | 58.52 | 43.38 | 31.92 | 54.60 | |||||||||||||
1968 | 34.18 | 35.50 | 43.98 | 50.57 | 59.11 | 71.85 | 73.40 | 72.92 | 65.73 | 58.61 | 43.57 | 35.53 | 53.75 | |||||||||||||
1969 | 40.20 | d | 39.02 | 36.40 | 55.35 | 63.98 | 69.25 | 78.77 | 77.19 | 67.75 | 51.76 | 44.60 | 38.69 | 55.25 | ||||||||||||
1970 | 31.50 | 41.89 | 39.85 | 51.68 | 65.35 | 71.52 | 76.61 | 76.74 | 66.78 | 51.61 | 44.28 | 41.42 | 54.94 | |||||||||||||
1971 | 36.93 | a | 35.45 | 44.52 | 53.58 | 61.47 | 74.58 | 75.74 | 70.65 | 64.78 | 56.11 | 45.98 | 37.71 | 54.79 | ||||||||||||
1972 | 35.61 | 40.41 | 51.19 | 58.10 | 62.63 | 73.47 | 73.84 | 72.53 | 66.95 | 56.55 | 36.71 | a | 33.12 | a | 55.09 | |||||||||||
1973 | 31.26 | 36.66 | 44.05 | 47.43 | 60.29 | 71.48 | 75.31 | 75.47 | 66.07 | 59.74 | 48.58 | 36.98 | 54.44 | |||||||||||||
1974 | 33.24 | 40.16 | 50.94 | 56.03 | 68.81 | 72.65 | 77.19 | 70.63 | 60.68 | 56.95 | 44.65 | 34.73 | 55.56 | |||||||||||||
1975 | 34.81 | 32.95 | 42.60 | 51.10 | 61.24 | 70.85 | 73.13 | 74.85 | 64.32 | 57.66 | 43.63 | 39.23 | 53.86 | |||||||||||||
1976 | 35.16 | 45.07 | 44.39 | 56.57 | 59.19 | 72.12 | 73.53 | 73.82 | 66.63 | 49.56 | 39.98 | 36.66 | 54.39 | |||||||||||||
1977 | 28.37 | 41.32 | 45.39 | 55.23 | 66.58 | 76.25 | 77.02 | 75.11 | 69.98 | 58.10 | 45.62 | 39.13 | 56.51 | |||||||||||||
1978 | 29.02 | 29.79 | 46.00 | 59.53 | 62.38 | a | 73.35 | 78.43 | a | 73.16 | 67.28 | 58.37 | 44.68 | 32.71 | 54.56 | |||||||||||
1979 | 24.29 | 38.95 | 46.29 | 54.87 | 61.98 | 69.97 | 77.24 | 71.85 | 68.78 | 59.15 | 38.75 | 37.35 | a | 54.12 | ||||||||||||
1980 | 33.29 | 37.48 | 42.50 | 51.32 | 59.89 | 77.28 | 81.39 | 76.56 | 68.33 | 54.55 | 41.50 | 41.27 | 55.45 | |||||||||||||
1981 | 38.05 | b | 42.35 | a | 46.21 | 59.83 | 62.66 | 75.82 | 77.42 | 72.63 | 66.10 | 55.53 | 49.02 | 39.15 | 57.06 | |||||||||||
1982 | 36.13 | a | 35.75 | b | 45.71 | 52.77 | b | 62.27 | 68.03 | a | 75.45 | 75.06 | 67.88 | 54.06 | 41.45 | 33.70 | a | 54.02 | ||||||||
1983 | 32.08 | 33.55 | 42.77 | 47.92 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 39.08 | h | ||||
1984 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1985 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1986 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1987 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1988 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1989 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1990 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1991 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1992 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1993 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1994 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1995 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1996 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1997 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1998 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | ----- | z | ----- | z | ----- | z |
2001 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2002 | ----- | z | ----- | z | ----- | z | ----- | z | 65.23 | 77.17 | 76.66 | 76.29 | 67.83 | 52.75 | a | 41.89 | b | 34.63 | 61.56 | d | ||||||
2003 | 38.74 | 36.20 | 48.19 | 56.88 | 66.74 | 67.37 | 78.82 | 77.24 | 65.45 | a | 59.19 | 45.63 | 38.90 | 56.61 | ||||||||||||
2004 | 36.85 | 35.05 | 49.90 | 53.15 | 66.58 | 72.70 | 73.68 | 71.85 | 67.77 | 56.90 | 41.03 | a | 37.90 | 55.28 | ||||||||||||
2005 | 38.43 | c | 40.75 | 43.52 | 52.33 | 61.56 | 72.93 | 76.48 | 73.87 | 71.28 | 57.43 | b | 47.23 | 35.23 | 55.92 | |||||||||||
2006 | 40.90 | 38.39 | 47.52 | 59.05 | 68.61 | 76.68 | 78.65 | 74.84 | 63.43 | 57.08 | 46.63 | 34.11 | 57.16 | |||||||||||||
2007 | 28.42 | 35.95 | 49.55 | 49.42 | 61.23 | 70.14 | a | 75.06 | 77.87 | 70.08 | 59.26 | 45.37 | 35.63 | 54.83 | ||||||||||||
2008 | 34.50 | 38.41 | 44.94 | 53.30 | 63.38 | a | 74.63 | 73.55 | 73.97 | 65.40 | 55.67 | b | 47.35 | 36.68 | 55.15 | |||||||||||
2009 | 37.55 | a | 43.74 | c | 45.33 | h | 52.71 | d | 61.82 | 73.83 | 75.66 | 74.68 | 65.15 | 52.58 | a | 48.47 | 30.65 | 56.08 | a | |||||||
2010 | 33.81 | 28.89 | 44.02 | 55.12 | 61.48 | 77.67 | 76.35 | 77.00 | 73.22 | 59.00 | a | 44.66 | a | 40.02 | 55.94 | |||||||||||
2011 | 34.16 | 32.61 | a | 47.83 | a | 57.75 | 63.98 | 79.00 | 82.05 | 81.40 | 68.60 | 58.08 | a | 46.00 | 31.63 | 56.93 | ||||||||||
2012 | 39.92 | 38.03 | 49.44 | g | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 38.98 | j | ||
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 |
2020 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2021 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2022 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2023 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2024 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 35.07 | 38.69 | 45.34 | 54.91 | 63.81 | 73.41 | 77.23 | 75.60 | 68.16 | 57.47 | 44.73 | 36.97 | 55.89 | |||||||||||||
S.D. | 4.10 | 4.43 | 3.79 | 3.35 | 2.69 | 2.84 | 2.43 | 2.58 | 2.60 | 2.98 | 3.12 | 3.24 | 1.34 | |||||||||||||
SKEW | -0.22 | -0.19 | -0.54 | 0.10 | 0.26 | 0.41 | 0.20 | 0.09 | 0.10 | -0.35 | -0.27 | -0.21 | 0.27 | |||||||||||||
MAX | 45.47 | 48.70 | 52.21 | 62.72 | 70.40 | 81.98 | 82.95 | 81.40 | 73.80 | 63.98 | 52.58 | 43.44 | 59.19 | |||||||||||||
MIN | 24.29 | 27.98 | 35.06 | 47.43 | 58.02 | 67.37 | 73.05 | 70.63 | 60.68 | 49.56 | 36.08 | 29.43 | 53.62 | |||||||||||||
YRS | 68 | 69 | 68 | 70 | 70 | 70 | 70 | 70 | 70 | 70 | 70 | 68 | 63 |