YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1926 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 71.23 | 65.15 | 54.42 | 43.00 | 31.44 | 53.05 | g | |||||
1927 | 39.30 | h | 36.45 | 40.13 | 51.90 | 61.58 | 66.85 | 71.45 | 68.19 | b | 62.67 | 54.55 | 46.36 | b | 28.66 | 53.53 | a | |||||||||
1928 | 36.47 | 33.90 | 44.10 | 46.43 | a | 58.82 | 67.50 | 73.56 | 68.60 | a | 63.02 | 53.84 | 37.32 | 30.63 | 51.18 | |||||||||||
1929 | 33.02 | 27.94 | c | 40.92 | a | 50.48 | 57.05 | b | 68.35 | 70.90 | 69.47 | 61.40 | 50.30 | a | 33.20 | c | 35.82 | a | 49.90 | |||||||
1930 | 23.10 | 41.69 | a | 38.52 | 54.72 | 55.55 | 70.10 | 72.38 | a | 70.53 | 64.08 | 50.50 | 40.92 | d | 30.92 | 51.08 | ||||||||||
1931 | 32.39 | 36.86 | 38.11 | 48.40 | 54.64 | b | 69.75 | 71.34 | 67.13 | a | 67.29 | b | 53.36 | b | 39.27 | 34.02 | 51.05 | |||||||||
1932 | 29.87 | 41.17 | 36.24 | b | 50.21 | d | 58.03 | a | 62.53 | 67.53 | 62.44 | e | 52.47 | a | 50.14 | b | 41.98 | 25.20 | a | 48.15 | ||||||
1933 | 35.08 | 31.92 | b | 43.00 | 47.33 | 58.85 | 70.40 | 73.32 | 68.42 | a | 67.03 | 55.28 | a | 44.45 | 41.18 | 53.02 | ||||||||||
1934 | 35.02 | 37.79 | 43.24 | b | 52.28 | 64.82 | a | 71.85 | 77.19 | 73.65 | 61.73 | 56.77 | 42.52 | 38.58 | 54.62 | |||||||||||
1935 | 43.77 | a | 43.38 | b | 48.42 | 52.82 | 53.84 | 70.38 | 75.02 | 70.53 | 60.47 | 52.33 | b | 41.15 | 33.03 | 53.76 | ||||||||||
1936 | 32.65 | 34.90 | 41.42 | 49.82 | 59.47 | 65.43 | 66.52 | 68.29 | 57.53 | a | 49.71 | 38.60 | 34.48 | 49.90 | ||||||||||||
1937 | 27.00 | ----- | z | 41.05 | 51.09 | b | 62.57 | a | 68.22 | 74.31 | 74.56 | 65.85 | 55.60 | 41.43 | 35.85 | 54.32 | a | |||||||||
1938 | 35.42 | 37.21 | 46.11 | 52.67 | 58.05 | 67.55 | 72.10 | 74.42 | 64.33 | 55.43 | a | 39.12 | b | 34.87 | 53.11 | |||||||||||
1939 | 34.37 | 28.06 | b | 44.61 | 51.96 | b | 59.90 | 69.78 | 72.18 | 69.53 | 66.57 | 51.90 | a | 40.40 | 37.16 | 52.20 | ||||||||||
1940 | 26.50 | b | 35.04 | a | 44.32 | 49.57 | 59.28 | a | 67.28 | 77.11 | 70.94 | 67.27 | 57.35 | 38.77 | 34.07 | b | 52.29 | |||||||||
1941 | 33.98 | 39.07 | 39.00 | 48.27 | 60.92 | 64.55 | a | 68.90 | a | 69.02 | 61.12 | 52.85 | 45.26 | a | 34.32 | a | 51.44 | |||||||||
1942 | 36.36 | c | 34.06 | c | 41.23 | a | 53.17 | c | 61.21 | c | 69.26 | e | 73.44 | 70.70 | c | 62.38 | a | 52.83 | d | 46.28 | a | 38.09 | b | 53.25 | ||
1943 | 34.90 | a | 41.27 | 42.24 | b | 55.24 | a | 58.58 | a | 70.50 | 73.43 | a | 75.73 | 64.25 | 53.05 | a | 40.81 | a | 27.05 | 53.09 | ||||||
1944 | 29.47 | 36.84 | 40.74 | 46.05 | a | 57.84 | 67.93 | 72.37 | 71.69 | 64.71 | a | 55.77 | 43.60 | a | 34.20 | a | 51.77 | |||||||||
1945 | 33.39 | 38.96 | b | 44.42 | 47.14 | a | 61.73 | 65.70 | b | 73.73 | a | 73.39 | 63.63 | 56.13 | 45.88 | 34.75 | a | 53.24 | ||||||||
1946 | 34.30 | c | 41.29 | b | 46.06 | 57.36 | b | 57.81 | 70.73 | 74.69 | 71.19 | 66.52 | 54.58 | 40.93 | a | 40.95 | 54.70 | |||||||||
1947 | 34.50 | 34.15 | b | 40.53 | 49.69 | a | 60.34 | 67.48 | 73.85 | ----- | z | 68.62 | a | 58.11 | 37.63 | 32.68 | 50.69 | a | ||||||||
1948 | 28.71 | b | 30.31 | c | 32.47 | 54.69 | a | 59.71 | 68.22 | 74.80 | a | 72.10 | 66.85 | 52.89 | c | 37.53 | 35.27 | 51.13 | ||||||||
1949 | 23.59 | b | 33.56 | c | 43.70 | d | 45.76 | k | 58.62 | a | 66.03 | 71.77 | 70.71 | 64.60 | a | 51.75 | a | 48.83 | a | 31.28 | d | 51.31 | a | |||
1950 | 37.29 | 40.86 | 42.65 | 53.28 | a | 61.55 | 71.14 | a | 72.00 | l | 70.07 | c | 64.43 | c | 61.90 | b | ----- | z | ----- | z | 55.91 | c | ||||
1951 | ----- | z | 42.71 | i | 42.02 | 51.07 | 60.73 | 67.38 | 76.39 | 73.58 | 66.22 | 54.97 | 40.07 | 35.00 | 56.74 | b | ||||||||||
1952 | 37.92 | 38.10 | 39.42 | 50.73 | 59.21 | 74.65 | 73.61 | 73.60 | 65.07 | 54.35 | 36.23 | 32.24 | 52.93 | |||||||||||||
1953 | 41.06 | 34.25 | 46.53 | 49.68 | 57.77 | 75.18 | 73.98 | 71.82 | 68.05 | 55.16 | 44.07 | 31.62 | a | 54.10 | ||||||||||||
1954 | 37.18 | 45.27 | 41.62 | a | 57.93 | 58.85 | 71.65 | 76.65 | 72.82 | 68.60 | 56.16 | 45.57 | 38.18 | 55.87 | ||||||||||||
1955 | 32.11 | 32.48 | 42.10 | 53.17 | a | 58.23 | 65.72 | 69.87 | 70.27 | 66.18 | 55.94 | 41.55 | 38.55 | 52.18 | ||||||||||||
1956 | 36.95 | 32.29 | 44.92 | 49.32 | 64.34 | 72.89 | h | 71.60 | e | 72.60 | 66.33 | 56.16 | 40.78 | 37.13 | 52.04 | a | ||||||||||
1957 | 34.73 | a | 45.61 | 44.15 | 46.28 | a | 57.24 | 70.23 | 76.92 | 71.37 | 65.08 | q | ----- | z | 33.45 | t | 41.13 | 54.18 | c | |||||||
1958 | 33.40 | f | ----- | z | ----- | z | 51.00 | w | 61.90 | 71.02 | 74.15 | 72.98 | 65.32 | 54.94 | 44.30 | b | 37.73 | 60.29 | d | |||||||
1959 | 32.10 | a | 36.16 | 40.91 | i | ----- | z | 59.24 | 70.52 | 72.66 | 72.03 | 65.77 | 54.45 | b | 44.36 | e | 38.03 | 54.53 | b | |||||||
1960 | 32.48 | 34.72 | 42.40 | a | 53.74 | a | 57.95 | 68.83 | 69.62 | a | 71.77 | 66.36 | a | 55.46 | d | 53.75 | l | 34.33 | d | 53.43 | a | |||||
1961 | 34.11 | d | ----- | z | ----- | z | ----- | z | ----- | z | 67.95 | 74.20 | a | 71.42 | 59.55 | 56.69 | 41.90 | a | 36.50 | 55.29 | d | |||||
1962 | 30.12 | c | ----- | z | ----- | z | 53.76 | a | 63.81 | 67.45 | 71.20 | a | 74.88 | a | 66.80 | 58.00 | a | 47.70 | ----- | z | 59.30 | c | ||||
1963 | 20.98 | j | 38.41 | 43.77 | 54.90 | a | 61.77 | 70.02 | 76.78 | b | ----- | z | ----- | z | ----- | z | ----- | z | 28.71 | s | 57.61 | f | ||||
1964 | 29.95 | u | ----- | z | ----- | z | ----- | z | ----- | z | 70.38 | 77.02 | 71.69 | 64.50 | 55.31 | 41.22 | 33.89 | 59.14 | e | |||||||
1965 | 37.43 | a | 32.41 | 35.08 | 53.36 | a | 58.63 | a | 65.19 | a | 72.81 | 68.37 | 58.82 | 50.50 | 44.52 | 34.48 | 50.97 | |||||||||
1966 | 24.27 | 29.09 | 42.50 | 47.67 | ----- | z | ----- | z | ----- | z | ----- | z | 61.43 | i | ----- | z | ----- | z | 29.19 | 34.54 | g | |||||
1967 | 31.45 | 31.46 | b | 45.13 | 49.95 | 56.92 | 66.33 | 69.23 | 66.58 | 59.03 | 53.55 | 41.12 | 25.98 | 49.73 | ||||||||||||
1968 | 31.74 | 35.03 | 39.85 | a | 47.88 | 55.55 | a | 68.20 | 69.13 | 67.82 | 61.78 | 53.18 | 37.57 | 26.87 | 49.55 | |||||||||||
1969 | 38.10 | a | 33.29 | 33.53 | 50.70 | 57.34 | 61.68 | 72.65 | 71.76 | 63.57 | 47.26 | 39.48 | a | ----- | z | 51.76 | a | |||||||||
1970 | ----- | z | ----- | z | ----- | z | ----- | z | 60.29 | 65.88 | 72.85 | 74.13 | a | 64.28 | 50.00 | 43.52 | 39.67 | a | 58.83 | d | ||||||
1971 | 37.65 | 36.20 | 44.56 | 50.97 | 59.44 | 71.85 | 72.06 | 68.31 | 63.05 | 53.56 | 42.98 | 33.27 | 52.83 | |||||||||||||
1972 | 36.27 | 41.29 | 48.95 | 54.35 | 59.87 | 69.70 | 70.29 | 69.21 | 63.25 | 53.60 | 33.33 | 31.03 | 52.60 | |||||||||||||
1973 | 30.42 | 35.46 | 40.69 | 43.87 | 57.40 | 68.05 | 71.68 | 71.21 | 62.97 | 55.00 | 44.67 | 34.32 | 51.31 | |||||||||||||
1974 | 32.50 | 37.52 | 47.57 | a | 50.25 | 66.29 | 71.08 | 74.11 | 68.50 | 60.20 | 54.58 | 41.92 | 31.10 | 52.97 | ||||||||||||
1975 | 32.10 | 35.09 | 43.42 | 48.25 | 58.24 | 67.77 | 71.29 | 72.34 | 62.27 | 55.03 | 41.23 | 37.48 | 52.04 | |||||||||||||
1976 | 32.58 | 42.91 | 43.27 | a | 52.57 | 58.26 | 70.33 | 71.85 | 71.78 | a | 63.83 | 48.82 | 37.48 | 33.81 | 52.29 | |||||||||||
1977 | 28.50 | 38.12 | 41.37 | 51.48 | 61.13 | 72.75 | 74.53 | 71.89 | 67.43 | 56.76 | 43.97 | 39.11 | 53.92 | |||||||||||||
1978 | 28.89 | 32.54 | 44.73 | 55.03 | 59.00 | 70.10 | 76.12 | b | 72.60 | 65.35 | 56.31 | 41.90 | 29.69 | 52.69 | ||||||||||||
1979 | 22.52 | 34.57 | 43.24 | 51.00 | 58.50 | 65.45 | 72.97 | 69.81 | 65.29 | a | 56.87 | a | 36.48 | 36.65 | 51.11 | |||||||||||
1980 | 33.95 | 38.00 | 41.76 | 48.57 | 57.29 | 72.87 | 78.31 | 73.56 | 66.62 | 51.98 | 40.60 | 42.90 | 53.87 | |||||||||||||
1981 | 36.11 | 38.17 | a | 43.40 | 56.18 | 58.60 | 72.23 | 74.55 | 69.47 | 63.62 | 53.23 | 47.13 | 38.39 | 54.26 | ||||||||||||
1982 | 35.71 | 35.12 | 44.55 | 51.62 | 58.37 | 65.80 | 72.32 | 70.58 | 64.95 | 51.27 | a | 40.08 | 32.76 | b | 51.93 | |||||||||||
1983 | 34.65 | 34.32 | 41.69 | 45.64 | a | 55.81 | 65.42 | 73.95 | 72.85 | 68.37 | 54.61 | 43.12 | 24.48 | 51.24 | ||||||||||||
1984 | 29.34 | 37.41 | 40.53 | 47.72 | 63.02 | 68.65 | 73.08 | 69.53 | 63.52 | 49.05 | 42.00 | 34.73 | 51.55 | |||||||||||||
1985 | 29.06 | 34.34 | 43.76 | 52.82 | 60.90 | 69.60 | 73.55 | 73.06 | 62.82 | 52.97 | 43.20 | 32.35 | 52.37 | |||||||||||||
1986 | 40.18 | 37.71 | 48.58 | a | 53.82 | 58.66 | 66.43 | 72.90 | 71.39 | 64.42 | 51.34 | 39.20 | 32.55 | 53.10 | ||||||||||||
1987 | 30.73 | 36.73 | 41.10 | 51.02 | 58.73 | 68.28 | 73.77 | 69.61 | 62.27 | 55.53 | 41.22 | 30.92 | 51.66 | |||||||||||||
1988 | 27.18 | 37.45 | 40.92 | f | 51.15 | 58.76 | 69.17 | 71.02 | 70.89 | 63.10 | 55.89 | 43.82 | 33.02 | 52.86 | a | |||||||||||
1989 | 35.56 | 31.27 | 49.32 | 55.68 | 64.23 | 67.02 | 73.13 | 69.85 | 63.40 | 55.19 | 44.40 | 30.55 | 53.30 | |||||||||||||
1990 | 31.66 | 34.38 | 42.79 | 51.98 | 58.58 | 75.33 | 71.82 | 68.48 | 65.82 | 54.08 | 44.30 | 29.94 | 52.43 | |||||||||||||
1991 | 31.95 | 40.23 | 43.45 | 52.10 | 61.29 | 69.70 | 70.52 | 70.10 | 62.52 | 54.61 | 37.38 | 34.47 | 52.36 | |||||||||||||
1992 | 33.85 | 39.60 | 45.26 | 55.17 | 59.65 | 66.52 | 72.48 | 69.11 | 66.20 | 57.55 | 36.67 | 32.18 | a | 52.85 | ||||||||||||
1993 | 33.13 | 35.34 | 44.56 | 52.55 | 60.39 | 69.22 | 74.71 | 69.71 | 64.32 | 52.63 | a | 38.95 | 34.13 | 52.47 | ||||||||||||
1994 | 33.45 | 36.70 | 44.34 | 52.97 | 62.17 | a | 74.25 | 72.15 | 74.26 | 67.17 | 54.15 | 43.18 | 38.70 | a | 54.46 | |||||||||||
1995 | 35.08 | 42.66 | 44.87 | 50.22 | 58.71 | 66.90 | 72.76 | 74.39 | 64.82 | 55.84 | 46.63 | 34.24 | 53.93 | |||||||||||||
1996 | 34.61 | 40.14 | 41.27 | 52.37 | 67.52 | 72.08 | 73.00 | 70.35 | 61.88 | 53.66 | 43.85 | 34.76 | 53.79 | |||||||||||||
1997 | 30.98 | 35.16 | 47.32 | 45.60 | 59.87 | 68.45 | a | 73.15 | 70.94 | 67.80 | 54.27 | 38.58 | 30.02 | 51.85 | ||||||||||||
1998 | 37.13 | 37.02 | 41.55 | 48.65 | 62.50 | 70.80 | 75.35 | 71.15 | 70.28 | 55.81 | 45.67 | 34.97 | 54.24 | |||||||||||||
1999 | 39.29 | 42.98 | 44.87 | 49.97 | 57.98 | a | 68.25 | 75.03 | 72.87 | 64.28 | 55.82 | 47.33 | 35.31 | 54.50 | ||||||||||||
2000 | 38.23 | 44.43 | 45.32 | 55.72 | 66.53 | 72.02 | 75.02 | a | 75.71 | 70.10 | a | 53.55 | 35.88 | 31.79 | 55.36 | |||||||||||
2001 | 26.39 | 36.05 | 42.31 | 54.95 | 61.10 | 70.60 | a | 77.11 | 72.19 | 66.32 | 56.69 | 45.78 | 34.77 | 53.69 | ||||||||||||
2002 | 35.52 | 36.05 | 43.11 | 57.43 | 63.65 | 75.43 | 75.08 | 74.73 | 65.55 | 50.79 | c | 40.93 | 34.10 | 54.36 | ||||||||||||
2003 | 39.10 | 36.02 | 45.55 | 53.80 | 63.34 | 67.00 | 77.42 | 75.54 | c | 65.77 | 58.95 | 43.47 | 37.82 | 55.31 | ||||||||||||
2004 | 36.82 | 34.03 | 49.23 | 50.83 | 64.76 | 70.73 | 71.52 | 69.31 | 65.73 | 54.95 | 40.60 | 36.81 | 53.78 | |||||||||||||
2005 | 39.24 | 39.45 | 40.47 | 51.92 | 59.65 | a | 70.10 | 74.92 | 71.08 | 67.20 | 55.13 | 44.95 | 35.84 | 54.16 | ||||||||||||
2006 | 39.74 | 38.09 | 44.26 | 57.95 | 64.93 | a | 74.83 | 76.06 | 70.84 | 60.37 | 53.42 | 44.77 | 34.44 | 54.97 | ||||||||||||
2007 | 28.15 | 38.21 | 47.69 | 49.43 | 60.18 | 67.52 | 73.89 | 76.82 | 68.50 | 57.02 | 44.70 | 34.23 | 53.86 | |||||||||||||
2008 | 32.21 | 38.86 | 45.85 | 51.40 | 61.56 | 72.40 | 74.19 | 70.53 | 65.23 | 56.82 | a | 44.60 | 35.68 | 54.11 | ||||||||||||
2009 | 38.68 | 42.65 | a | 48.29 | 52.43 | 64.05 | 71.42 | 74.73 | 72.85 | 64.64 | a | 51.69 | 45.78 | 28.90 | 54.68 | |||||||||||
2010 | 33.94 | 26.62 | 43.29 | 53.08 | 60.15 | 74.40 | 74.48 | 73.37 | 70.43 | 57.37 | 42.63 | 39.56 | 54.11 | |||||||||||||
2011 | 34.95 | 33.73 | 48.97 | 55.27 | 59.63 | 75.82 | 79.21 | 77.55 | 65.80 | 55.89 | 44.27 | 27.03 | 54.84 | |||||||||||||
2012 | 38.60 | 36.97 | 50.56 | 57.82 | 63.19 | 74.60 | 76.81 | 74.10 | 67.28 | 55.06 | ----- | z | ----- | z | 59.50 | b | ||||||||||
2013 | 31.90 | ----- | z | ----- | z | 51.80 | 61.74 | 74.12 | 73.10 | 74.16 | 67.83 | 52.94 | 41.63 | 33.71 | 56.29 | b | ||||||||||
2014 | 36.02 | 38.62 | 45.34 | 52.27 | 60.32 | 70.00 | 73.26 | 72.18 | 66.37 | 57.40 | 41.58 | 35.23 | 54.05 | |||||||||||||
2015 | 34.27 | 38.70 | 46.98 | 53.60 | 58.29 | 71.03 | 74.79 | 73.71 | 70.43 | 57.44 | 43.35 | 35.94 | 54.88 | |||||||||||||
2016 | 34.82 | 42.12 | 47.45 | 52.40 | 58.47 | 72.33 | 77.92 | 70.85 | 67.73 | 60.89 | 46.55 | 34.53 | a | 55.51 | ||||||||||||
2017 | 35.89 | 45.32 | 51.79 | 53.75 | 58.98 | 71.83 | 76.27 | 70.40 | 66.00 | 56.21 | 50.38 | 37.77 | 56.22 | |||||||||||||
2018 | 37.00 | 40.36 | 47.66 | 53.52 | 66.44 | 75.25 | 75.47 | 73.56 | 68.90 | 54.45 | 41.15 | 35.13 | 55.74 | |||||||||||||
2019 | 36.10 | 39.11 | 44.26 | 54.55 | 58.61 | 69.92 | 76.30 | c | 75.37 | 70.90 | 52.43 | a | 42.90 | 36.95 | 54.78 | |||||||||||
2020 | 36.56 | 37.07 | 48.90 | 53.91 | a | 65.87 | 75.63 | 76.98 | 76.50 | 65.37 | 54.74 | 46.38 | 36.42 | 56.20 | ||||||||||||
2021 | 35.56 | 33.43 | 45.48 | 51.38 | 61.74 | 74.03 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 50.27 | f | ||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 33.68 | 36.89 | 43.58 | 51.77 | 60.16 | 69.69 | 73.59 | 71.53 | 64.87 | 54.43 | 42.17 | 34.22 | 53.05 | |||||||||||||
S.D. | 4.11 | 3.98 | 3.53 | 3.01 | 2.75 | 3.06 | 2.41 | 2.49 | 3.01 | 2.53 | 3.36 | 3.67 | 1.69 | |||||||||||||
SKEW | -0.55 | -0.04 | -0.45 | -0.20 | 0.55 | 0.06 | -0.22 | -0.23 | -0.85 | -0.16 | -0.31 | -0.34 | -0.39 | |||||||||||||
MAX | 43.77 | 45.61 | 51.79 | 57.95 | 67.52 | 75.82 | 79.21 | 77.55 | 70.90 | 61.90 | 50.38 | 42.90 | 56.22 | |||||||||||||
MIN | 22.52 | 26.63 | 32.47 | 43.87 | 53.84 | 61.68 | 66.52 | 62.44 | 52.47 | 47.26 | 33.20 | 24.48 | 48.15 | |||||||||||||
YRS | 89 | 87 | 87 | 89 | 92 | 93 | 92 | 92 | 92 | 92 | 89 | 90 | 73 |