YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1926 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1930 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1931 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1932 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1933 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1934 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1935 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1936 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1937 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 61.37 | 46.80 | 38.42 | 48.86 | i | |||
1938 | 39.03 | ----- | z | 53.79 | 58.82 | 68.74 | 75.73 | 77.16 | 77.97 | 71.77 | 62.39 | 46.33 | 41.65 | 61.22 | a | |||||||||||
1939 | 41.48 | 38.45 | 52.55 | 60.17 | 67.82 | 77.05 | 77.63 | 75.00 | 70.83 | 60.13 | 45.40 | ----- | z | 60.59 | a | |||||||||||
1940 | ----- | z | 45.86 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 45.86 | k | |
1941 | ----- | z | ----- | z | 47.42 | 58.98 | a | 66.74 | 71.69 | a | 75.95 | a | 76.55 | 69.10 | a | 61.61 | 51.02 | a | 43.62 | a | 62.27 | b | ||||
1942 | 39.13 | a | 42.98 | 50.87 | 58.80 | 67.39 | 74.42 | 76.03 | 74.31 | 66.65 | 58.79 | 56.28 | 39.68 | 58.78 | ||||||||||||
1943 | 35.48 | a | 41.91 | 43.29 | 58.30 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 44.75 | h | |||
1944 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1945 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 65.94 | 48.13 | c | 45.75 | e | 53.27 | i | |
1947 | 40.90 | e | 39.65 | a | 45.15 | a | 57.43 | c | 66.10 | 75.58 | 78.06 | ----- | z | ----- | z | 63.92 | 44.00 | 42.77 | a | 55.36 | b | |||||
1948 | 34.48 | 41.71 | 47.11 | 64.70 | 69.95 | 78.52 | 78.90 | 78.34 | 71.53 | 60.76 | 47.10 | 45.29 | 59.87 | |||||||||||||
1949 | 32.44 | 44.59 | 52.03 | 57.37 | g | 68.50 | a | 75.83 | 79.00 | 76.08 | 70.54 | b | 59.11 | 54.42 | 41.15 | d | 59.43 | a | ||||||||
1950 | 45.42 | 48.27 | 49.81 | 59.82 | 67.87 | 77.87 | 77.13 | 78.90 | a | 69.43 | 64.66 | 50.70 | 43.44 | 61.11 | ||||||||||||
1951 | 38.55 | a | 46.07 | 48.50 | 57.32 | 70.60 | 80.93 | 82.31 | 80.60 | a | 71.72 | 63.13 | 47.24 | a | 43.77 | 60.89 | ||||||||||
1952 | 45.81 | 45.82 | a | 48.55 | 58.38 | a | 68.98 | 80.23 | 78.73 | 82.31 | d | 70.75 | 58.52 | 45.93 | 41.27 | 60.44 | ||||||||||
1953 | 48.57 | a | 44.32 | 54.89 | 57.28 | c | 69.54 | f | 84.10 | 80.79 | 78.73 | 71.97 | 62.31 | 49.65 | 38.42 | 61.00 | a | |||||||||
1954 | 41.74 | 50.71 | 49.16 | 64.33 | 64.85 | 77.08 | 82.60 | a | 80.18 | 76.93 | 61.94 | e | 49.54 | e | 44.73 | p | 63.55 | a | ||||||||
1955 | 40.40 | 42.52 | e | 55.46 | q | ----- | z | 69.00 | i | 75.68 | 76.45 | 77.60 | 70.88 | a | 60.63 | a | 47.08 | d | 45.92 | 59.69 | c | |||||
1956 | 44.72 | f | 39.66 | 54.32 | 59.18 | 73.52 | 80.45 | 79.81 | 76.65 | 75.70 | h | 63.62 | e | 49.89 | h | 46.33 | e | 63.72 | c | |||||||
1957 | 43.37 | a | 50.20 | a | 51.08 | 55.40 | 65.10 | 77.40 | d | 80.53 | 78.97 | 69.43 | 58.55 | 46.04 | b | 45.10 | 60.10 | |||||||||
1958 | 37.58 | a | 42.07 | 44.18 | 56.10 | 69.73 | 79.30 | 81.35 | 79.50 | 69.77 | 60.48 | c | 49.67 | c | 42.08 | g | 60.88 | a | ||||||||
1959 | 40.45 | 42.11 | e | 50.77 | g | 61.63 | c | 70.50 | 76.39 | k | 78.43 | b | 79.39 | 73.05 | 58.34 | 47.07 | h | 43.46 | e | 60.82 | c | |||||
1960 | 37.95 | 38.86 | d | 48.60 | j | 63.09 | b | 68.98 | 80.22 | 77.92 | 79.15 | h | 71.93 | 61.80 | d | 51.25 | l | 37.74 | 59.83 | c | ||||||
1961 | 36.71 | 42.91 | 50.91 | c | 61.83 | c | 72.05 | 76.60 | d | 75.97 | 75.68 | 70.28 | 61.13 | 43.44 | l | 39.31 | d | 60.31 | a | |||||||
1962 | 37.44 | 49.98 | f | 49.08 | 61.62 | d | 74.05 | 73.82 | e | 78.74 | ----- | z | ----- | z | 65.00 | a | 52.73 | d | 45.77 | g | 61.56 | d | ||||
1963 | 34.11 | 45.29 | 53.16 | ----- | z | 71.98 | 75.67 | 79.58 | 77.74 | 71.58 | 64.32 | 49.47 | 37.02 | 59.99 | a | |||||||||||
1964 | 40.06 | 37.50 | d | 50.37 | 59.92 | 71.36 | f | 75.82 | b | 79.79 | c | 78.26 | 69.07 | 60.24 | 48.98 | a | 41.16 | 58.29 | a | |||||||
1965 | 43.61 | c | 38.30 | 41.16 | 61.67 | 68.85 | 75.63 | 78.50 | 76.08 | 69.80 | 59.55 | 54.60 | 44.18 | 59.33 | ||||||||||||
1966 | 32.61 | 37.73 | 50.50 | 57.47 | 66.03 | 75.35 | 80.56 | 73.95 | 69.07 | 56.56 | 51.72 | a | 38.88 | c | 57.54 | |||||||||||
1967 | 39.82 | 41.68 | 54.85 | 63.33 | a | 65.30 | a | 75.05 | 76.10 | 74.32 | 67.88 | 59.71 | 49.02 | a | 37.34 | 58.70 | ||||||||||
1968 | 39.82 | 40.28 | 48.56 | 55.70 | c | 66.47 | b | 75.57 | a | 75.44 | 74.76 | 67.22 | 61.92 | a | 46.87 | 40.60 | a | 57.77 | ||||||||
1969 | 44.00 | 42.61 | a | 40.00 | 60.08 | 67.21 | 74.87 | 80.87 | 79.10 | 69.03 | 55.81 | 47.87 | 43.19 | 58.72 | ||||||||||||
1970 | 36.52 | 44.20 | 44.47 | 56.77 | 67.47 | 74.00 | 78.73 | 77.42 | 69.28 | 55.71 | 47.40 | 44.50 | 58.04 | |||||||||||||
1971 | 40.68 | 40.79 | 48.42 | 58.05 | 66.73 | a | 77.32 | 77.47 | 71.15 | 68.02 | 59.68 | 49.62 | 41.66 | 58.30 | ||||||||||||
1972 | 39.84 | 43.45 | 54.52 | 63.27 | 66.35 | 74.80 | 74.55 | 73.55 | 69.87 | 58.69 | 40.77 | 37.32 | 58.08 | |||||||||||||
1973 | 34.10 | 38.61 | 49.00 | 52.68 | 65.45 | 73.53 | 76.66 | 75.18 | 68.58 | 61.69 | 51.18 | 41.35 | 57.34 | |||||||||||||
1974 | 38.71 | 42.07 | 56.05 | 60.90 | 71.02 | 75.23 | 77.88 | a | 72.87 | 62.00 | 59.02 | 47.63 | 39.03 | 58.53 | ||||||||||||
1975 | 39.24 | 39.77 | 46.92 | 55.62 | 65.74 | 76.08 | 73.50 | 73.65 | 65.03 | 58.97 | 47.75 | 41.44 | 56.98 | |||||||||||||
1976 | 38.11 | 49.47 | 49.82 | 61.43 | 64.13 | 74.78 | 73.69 | 75.74 | 68.10 | 52.37 | 41.48 | 38.87 | 57.33 | |||||||||||||
1977 | 32.94 | 43.25 | 48.42 | 57.75 | 69.74 | 77.33 | 78.65 | 77.71 | 74.45 | 60.97 | 50.13 | 43.16 | 59.54 | |||||||||||||
1978 | 32.50 | 34.14 | 49.55 | 63.40 | 68.10 | 76.42 | 80.00 | 76.07 | a | 69.73 | 59.85 | 48.15 | 37.26 | 57.93 | ||||||||||||
1979 | 30.77 | 39.38 | 48.69 | 58.75 | 65.05 | 72.55 | 77.65 | 73.21 | 70.08 | 61.81 | 43.22 | 40.53 | 56.81 | |||||||||||||
1980 | 39.65 | 41.79 | 47.50 | 56.05 | 65.74 | 80.40 | 80.52 | 77.84 | 71.37 | 58.02 | 44.57 | 44.16 | 58.97 | |||||||||||||
1981 | 40.27 | 43.86 | 49.03 | 61.60 | 67.00 | 77.38 | 78.18 | 73.44 | 68.53 | 58.58 | 51.70 | 43.81 | 59.45 | |||||||||||||
1982 | 38.10 | 39.29 | 50.68 | 57.22 | 66.13 | 73.22 | 78.48 | ----- | z | 71.98 | 58.79 | 46.70 | 37.52 | 56.19 | a | |||||||||||
1983 | 34.50 | 42.27 | 49.19 | 53.18 | 65.56 | 72.81 | a | 78.38 | a | 77.61 | 72.02 | 61.90 | b | 50.70 | 31.08 | 57.43 | ||||||||||
1984 | 36.94 | 43.53 | 47.97 | 56.43 | 68.34 | 75.07 | 76.44 | 75.00 | 66.17 | 56.63 | 47.88 | 43.08 | 57.79 | |||||||||||||
1985 | 36.10 | 40.09 | 52.03 | a | 61.57 | a | 68.34 | 73.17 | 77.31 | 79.29 | 70.00 | 59.67 | a | 49.48 | 37.63 | 58.72 | ||||||||||
1986 | 43.05 | 45.38 | 53.40 | 62.80 | 67.39 | 73.78 | 78.63 | 76.05 | 69.83 | 58.42 | 46.50 | 39.81 | 59.59 | |||||||||||||
1987 | 37.52 | 44.23 | 46.19 | 56.22 | 67.11 | 74.52 | 77.92 | 76.68 | 68.35 | 60.44 | 48.67 | 38.73 | 58.05 | |||||||||||||
1988 | 35.19 | 42.66 | 48.92 | 57.20 | 66.53 | 74.98 | 77.00 | 77.44 | 69.25 | 61.27 | 50.92 | 40.63 | 58.50 | |||||||||||||
1989 | 43.03 | 39.38 | 52.69 | 61.77 | 71.37 | 73.13 | 78.52 | 75.73 | 66.70 | 61.90 | 49.25 | 34.82 | 59.02 | |||||||||||||
1990 | 41.68 | 45.64 | 49.53 | 59.57 | 66.81 | 82.67 | 76.24 | 75.44 | 72.58 | 59.77 | 51.77 | 38.44 | 60.01 | |||||||||||||
1991 | 36.74 | 47.04 | 51.82 | 60.60 | 72.68 | 76.85 | 76.56 | 76.60 | 66.55 | 60.69 | 43.52 | 41.23 | 59.24 | |||||||||||||
1992 | 38.48 | 46.88 | 53.34 | 60.18 | 65.68 | 73.65 | 78.84 | 74.95 | 70.63 | 62.02 | 45.08 | 40.44 | 59.18 | |||||||||||||
1993 | 38.34 | 41.14 | 49.06 | 58.15 | 68.02 | 77.60 | 80.37 | a | 78.56 | 69.32 | 58.18 | 44.07 | 42.21 | 58.75 | ||||||||||||
1994 | 39.84 | 41.41 | 51.60 | 58.38 | 68.10 | 81.22 | 80.77 | 77.68 | a | 71.73 | 61.65 | 50.23 | 44.77 | 60.62 | ||||||||||||
1995 | 41.06 | 47.50 | 49.71 | 58.02 | 67.50 | 75.97 | 81.47 | 78.29 | 69.70 | 60.27 | 50.60 | 42.10 | 60.18 | |||||||||||||
1996 | 39.71 | 46.29 | 47.26 | 59.20 | 75.39 | 78.12 | 78.97 | 76.77 | 69.50 | 60.32 | 49.18 | 43.15 | 60.32 | |||||||||||||
1997 | 37.82 | 40.09 | 52.66 | 53.16 | a | 66.53 | 73.60 | 79.65 | 77.23 | 73.98 | 60.69 | 46.65 | 37.26 | 58.28 | ||||||||||||
1998 | 43.44 | 44.05 | 46.92 | 56.65 | 73.35 | 80.88 | 83.61 | 77.18 | 76.08 | 63.66 | 51.60 | 41.90 | 61.61 | |||||||||||||
1999 | 43.98 | 48.79 | 49.42 | 58.77 | 66.11 | 74.28 | 78.90 | 80.69 | 69.13 | 59.52 | 53.88 | 41.19 | 60.39 | |||||||||||||
2000 | 42.77 | 49.67 | 52.35 | 60.87 | 72.55 | a | 74.55 | 80.44 | 79.35 | 73.87 | 61.61 | 42.22 | 36.50 | 60.56 | ||||||||||||
2001 | 36.92 | 44.30 | 46.89 | 62.10 | a | 70.03 | a | 78.93 | 83.05 | 78.24 | 71.14 | b | 60.28 | a | 51.26 | c | 41.65 | d | 60.40 | |||||||
2002 | 41.69 | 40.95 | 48.05 | a | 61.13 | 69.20 | a | 77.83 | 78.10 | b | 79.19 | 70.95 | 57.78 | a | 46.72 | 41.68 | c | 59.44 | ||||||||
2003 | 42.52 | c | 42.72 | a | 51.66 | 61.60 | 69.37 | 74.10 | 80.00 | 78.89 | 68.43 | 63.47 | 49.75 | 41.89 | 60.37 | |||||||||||
2004 | 41.05 | 40.36 | 54.94 | 58.75 | 70.60 | 75.77 | 76.97 | 74.37 | 68.62 | 60.81 | 45.87 | 40.73 | 59.07 | |||||||||||||
2005 | 43.24 | 44.66 | 49.15 | 58.58 | 66.85 | 77.98 | 77.45 | a | 75.40 | 73.48 | 60.48 | 50.80 | 40.71 | 59.90 | ||||||||||||
2006 | 45.76 | 43.91 | 52.13 | 64.32 | 72.66 | 79.28 | 80.08 | 77.66 | 67.02 | 59.68 | 51.82 | 40.47 | 61.23 | |||||||||||||
2007 | 34.11 | 42.80 | 54.50 | 54.78 | 65.55 | 73.68 | 76.65 | 78.40 | 72.60 | 64.00 | 49.60 | 41.71 | 59.03 | |||||||||||||
2008 | 38.44 | 45.22 | 50.73 | 58.27 | 68.76 | 79.58 | 77.08 | 75.73 | 67.58 | 60.02 | 49.97 | 41.50 | 59.41 | |||||||||||||
2009 | 41.39 | 48.29 | 52.94 | 58.43 | 68.47 | 77.78 | 78.84 | 78.55 | 68.50 | 57.11 | 51.28 | 34.87 | 59.70 | |||||||||||||
2010 | 37.58 | 37.88 | 49.19 | 58.97 | 67.10 | 79.87 | 75.89 | 78.53 | 73.47 | 61.42 | 48.63 | 43.48 | 59.33 | |||||||||||||
2011 | 37.98 | 39.14 | 54.89 | 63.17 | 68.00 | 82.67 | 83.18 | 83.37 | 70.73 | 61.21 | 49.10 | 36.61 | 60.84 | |||||||||||||
2012 | 42.85 | 42.52 | 56.00 | 65.30 | 71.34 | 79.63 | 79.71 | 78.98 | 70.87 | 59.27 | 52.48 | 41.95 | 61.74 | |||||||||||||
2013 | 39.87 | 42.41 | 50.39 | 56.28 | 68.40 | 79.08 | 77.56 | 78.11 | 72.63 | 59.27 | 46.03 | 38.52 | 59.05 | |||||||||||||
2014 | 37.48 | 41.75 | 48.35 | 58.83 | 67.39 | 77.95 | 77.92 | 77.47 | 70.78 | 62.24 | 43.67 | 42.87 | 58.89 | |||||||||||||
2015 | 36.42 | 43.25 | 49.47 | 60.22 | 64.61 | 76.05 | 79.03 | 77.15 | 73.50 | 62.08 | 48.85 | 42.65 | 59.44 | |||||||||||||
2016 | 39.52 | 46.41 | 54.87 | 59.65 | 66.10 | 76.75 | 82.24 | 75.79 | 70.73 | 64.18 | 53.12 | 40.79 | 60.85 | |||||||||||||
2017 | 41.81 | 49.88 | 56.56 | 60.88 | 66.50 | 78.13 | 79.03 | 74.39 | 69.72 | 60.00 | 52.73 | 41.37 | 60.92 | |||||||||||||
2018 | 37.08 | 43.29 | 53.47 | 57.55 | 74.82 | 80.58 | 79.82 | 77.26 | 69.92 | 58.69 | 44.27 | 39.63 | 59.70 | |||||||||||||
2019 | 41.13 | 43.91 | 47.76 | 59.43 | 66.23 | 75.35 | 79.81 | 80.68 | 74.88 | 56.27 | 45.37 | 43.90 | 59.56 | |||||||||||||
2020 | 42.31 | 40.40 | 54.16 | 58.72 | 70.82 | 77.68 | 82.90 | 80.05 | 67.38 | 58.03 | 52.75 | 40.24 | 60.45 | |||||||||||||
2021 | 38.26 | 35.93 | 50.89 | 56.35 | 66.69 | 77.42 | 76.50 | 76.03 | 72.35 | 62.23 | 50.23 | 48.94 | 59.32 | |||||||||||||
2022 | 37.00 | 36.95 | 48.26 | 60.87 | 71.31 | 78.87 | 82.95 | 77.47 | 72.40 | 59.37 | 45.57 | 40.65 | 59.30 | |||||||||||||
2023 | 42.34 | 42.79 | 51.44 | 57.02 | 68.47 | 77.00 | 81.29 | 81.05 | 74.67 | 60.77 | 49.68 | 43.85 | 60.86 | |||||||||||||
2024 | 36.76 | 47.26 | 51.26 | 57.67 | g | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 45.09 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 39.21 | 42.90 | 50.20 | 59.22 | 68.37 | 76.78 | 78.72 | 77.17 | 70.32 | 60.41 | 48.59 | 41.03 | 59.34 | |||||||||||||
S.D. | 3.46 | 3.48 | 3.29 | 2.72 | 2.59 | 2.62 | 2.18 | 2.27 | 2.52 | 2.31 | 3.16 | 2.96 | 1.17 | |||||||||||||
SKEW | -0.03 | 0.14 | -0.46 | -0.01 | 0.77 | 0.48 | 0.14 | 0.00 | -0.10 | -0.33 | -0.17 | -0.39 | -0.10 | |||||||||||||
MAX | 48.57 | 50.71 | 56.56 | 65.30 | 75.39 | 84.10 | 83.61 | 83.37 | 76.93 | 65.94 | 56.28 | 48.94 | 61.74 | |||||||||||||
MIN | 30.77 | 34.14 | 40.00 | 52.68 | 64.13 | 71.69 | 73.50 | 71.15 | 62.00 | 52.37 | 40.77 | 31.08 | 56.81 | |||||||||||||
YRS | 81 | 81 | 80 | 79 | 78 | 80 | 81 | 77 | 78 | 83 | 79 | 79 | 64 |