YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
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 | 51.20 | 48.86 | j | 51.20 | k | |
1930 | 31.14 | b | 52.44 | a | ----- | z | ----- | z | 64.45 | 71.87 | 77.97 | ----- | z | ----- | z | ----- | z | 52.63 | ----- | z | 58.42 | f | ||||
1931 | ----- | z | 49.46 | b | 55.15 | d | 65.66 | a | 73.30 | d | 72.24 | a | 79.61 | 75.42 | 70.63 | ----- | z | ----- | z | ----- | z | 67.68 | d | |||
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 | ----- | z | ----- | z | ----- | z | ----- | z |
1938 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1939 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1940 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 73.80 | u | 82.32 | 74.00 | a | 65.89 | c | 50.50 | 48.68 | 64.28 | g | |||
1941 | 48.57 | a | 56.46 | b | 62.26 | 63.69 | a | 65.87 | a | 73.83 | 84.23 | 78.68 | 67.97 | 62.74 | 55.20 | 47.47 | a | 63.91 | ||||||||
1942 | 42.74 | 49.39 | 55.10 | 61.47 | 64.30 | a | 69.40 | 79.97 | 81.13 | 78.10 | 66.16 | 51.87 | 48.13 | 62.31 | ||||||||||||
1943 | 41.03 | 53.93 | 53.58 | 64.17 | 64.33 | a | 69.73 | 77.16 | 75.00 | 79.79 | a | 63.45 | 55.90 | 47.23 | 62.11 | |||||||||||
1944 | 48.74 | 50.14 | a | 55.26 | 58.80 | 66.52 | 70.60 | 79.23 | a | 79.48 | 78.30 | 70.48 | 53.77 | 46.84 | 63.18 | |||||||||||
1945 | 49.58 | 50.74 | a | 52.65 | 57.30 | c | 67.76 | b | 71.96 | b | 82.47 | a | 82.43 | c | 73.00 | 67.24 | b | 49.86 | a | 46.84 | 62.65 | |||||
1946 | 47.90 | 50.07 | 55.80 | a | 61.97 | a | 72.45 | b | 69.60 | 79.10 | a | 81.55 | 72.89 | b | 58.90 | b | 52.90 | 46.86 | b | 62.50 | ||||||
1947 | 42.52 | 55.69 | b | 62.41 | b | 62.90 | a | 72.66 | b | 71.33 | 77.67 | d | 77.81 | 77.07 | 58.90 | 52.90 | 48.45 | b | 63.36 | |||||||
1948 | 46.90 | b | 46.75 | a | 53.45 | 56.47 | 64.11 | c | 75.73 | 73.96 | d | 71.35 | 72.11 | c | 63.65 | 47.33 | 40.40 | a | 59.35 | |||||||
1949 | 34.19 | 44.43 | 53.77 | 63.70 | 68.13 | 73.30 | 74.87 | 75.70 | d | 78.65 | j | 60.00 | 59.66 | a | 45.31 | b | 59.37 | a | ||||||||
1950 | 35.21 | c | 47.43 | 50.90 | 59.25 | b | 68.33 | a | 73.13 | 79.27 | a | 83.32 | 79.79 | a | 59.97 | a | 54.97 | a | 54.68 | 62.19 | ||||||
1951 | 45.94 | 52.43 | 51.34 | b | 66.43 | 69.42 | 75.93 | a | 80.00 | 80.13 | 79.28 | a | 61.90 | 55.13 | 43.26 | 63.43 | ||||||||||
1952 | 43.00 | 49.79 | 51.26 | 66.23 | 70.58 | 69.48 | c | 83.96 | d | 80.83 | b | 85.58 | d | 73.40 | a | 52.90 | 49.77 | 64.73 | ||||||||
1953 | 53.39 | 50.86 | 53.90 | 58.83 | 66.97 | a | 68.77 | 80.06 | 79.35 | 79.93 | 68.23 | 57.72 | a | 49.52 | 63.96 | |||||||||||
1954 | 45.47 | a | 54.26 | a | 55.16 | 61.10 | a | 70.90 | ----- | z | ----- | z | 73.26 | 72.76 | a | 66.84 | 58.30 | 48.55 | 60.66 | b | ||||||
1955 | 46.06 | 49.46 | 50.80 | a | 56.03 | 67.68 | f | 77.50 | n | 72.71 | 78.63 | a | 73.70 | 63.19 | 47.27 | 46.35 | 58.42 | b | ||||||||
1956 | 46.45 | 41.10 | 51.52 | 64.97 | 72.61 | 68.50 | 81.23 | a | 75.89 | m | 73.87 | 60.10 | 52.80 | 45.67 | a | 59.89 | a | |||||||||
1957 | 37.93 | a | 49.61 | 54.97 | 61.87 | 69.10 | 72.70 | c | 77.96 | c | 75.87 | 81.31 | a | 63.69 | b | 54.43 | 48.65 | 62.34 | ||||||||
1958 | 49.77 | 56.36 | 55.97 | a | 59.48 | a | 75.94 | 74.20 | 84.16 | 85.35 | 75.34 | a | 70.58 | 55.76 | a | 51.72 | b | 66.22 | ||||||||
1959 | 47.50 | a | 48.61 | 55.44 | d | 61.70 | 65.26 | 71.43 | 81.37 | a | 79.78 | h | 69.00 | 64.07 | a | 52.97 | 47.54 | c | 60.44 | a | ||||||
1960 | 41.87 | a | 50.03 | 54.75 | c | 59.04 | b | 62.97 | 73.27 | 82.74 | 75.50 | a | 72.46 | b | 64.58 | 53.44 | c | 48.25 | c | 61.58 | ||||||
1961 | 52.06 | 52.42 | b | 53.65 | 57.34 | a | 64.81 | 76.37 | 80.10 | 84.33 | a | 71.47 | 62.81 | 51.14 | a | 46.03 | 62.71 | |||||||||
1962 | 44.32 | 51.71 | 52.52 | 62.30 | 59.39 | 71.67 | 77.61 | 75.94 | 75.57 | 64.35 | 55.47 | 49.45 | 61.69 | |||||||||||||
1963 | 40.84 | 57.18 | 54.82 | c | 56.63 | 67.87 | 68.60 | 72.53 | a | 76.03 | 76.33 | 64.27 | a | 54.04 | b | 47.32 | 61.37 | |||||||||
1964 | 46.87 | 50.79 | 50.94 | 55.17 | 62.52 | 68.03 | a | 74.90 | 73.61 | 70.48 | a | 66.77 | 48.97 | 43.81 | 59.41 | |||||||||||
1965 | 46.06 | 49.07 | 58.14 | c | 61.73 | 63.13 | 71.82 | b | 81.42 | 77.61 | c | 72.07 | 67.23 | 54.76 | a | 44.68 | 62.31 | |||||||||
1966 | 44.58 | 49.86 | 54.42 | 63.23 | 68.59 | b | 71.63 | 75.74 | 79.29 | 74.83 | 63.39 | 53.87 | 48.65 | 62.34 | ||||||||||||
1967 | 49.03 | 52.21 | 50.94 | 55.40 | 67.55 | 75.63 | 81.03 | a | 88.42 | 80.90 | 62.94 | 54.30 | 45.58 | 63.66 | ||||||||||||
1968 | 45.00 | a | 57.31 | 56.84 | 57.32 | b | 64.42 | 71.23 | 79.06 | 74.55 | 71.50 | 60.87 | 52.87 | 41.94 | 61.08 | |||||||||||
1969 | 36.48 | 46.96 | 57.84 | 58.90 | 69.57 | a | 73.63 | 76.03 | 75.37 | a | 71.93 | 61.16 | 53.60 | 48.57 | h | 61.95 | a | |||||||||
1970 | 45.45 | 55.89 | 55.32 | 55.00 | 66.10 | 75.90 | 78.94 | 80.03 | 69.53 | 62.48 | 54.23 | 43.84 | 61.89 | |||||||||||||
1971 | 43.23 | 49.18 | 50.00 | c | 57.90 | 66.00 | a | 65.63 | 78.74 | 81.32 | 70.40 | 60.19 | 50.83 | 43.77 | 59.77 | |||||||||||
1972 | 43.00 | 48.59 | 56.55 | 56.47 | 70.94 | 72.30 | 82.17 | b | 77.37 | l | 71.76 | a | 64.27 | a | 53.40 | 40.43 | a | 59.99 | a | |||||||
1973 | 44.00 | 52.61 | 53.57 | a | 61.37 | 69.10 | 71.38 | a | 80.94 | 75.23 | 75.43 | 61.68 | 48.53 | 48.48 | b | 61.86 | ||||||||||
1974 | 44.27 | a | 47.07 | 55.28 | f | 56.55 | a | 60.55 | 73.43 | 73.36 | i | 78.61 | 81.17 | a | 67.48 | ----- | z | 47.55 | 61.85 | c | ||||||
1975 | ----- | z | ----- | z | 50.42 | 52.83 | 66.41 | d | ----- | z | 74.87 | 70.00 | b | 81.07 | b | 58.68 | 49.41 | c | 47.37 | a | 61.23 | c | ||||
1976 | 46.23 | a | 45.06 | l | 49.87 | 56.04 | c | 65.23 | 67.40 | ----- | z | ----- | z | 71.77 | 63.32 | 56.00 | a | 45.16 | 57.89 | c | ||||||
1977 | 44.29 | 53.46 | 50.00 | 63.27 | 60.06 | 72.87 | 75.26 | 82.23 | 67.93 | 62.19 | 49.63 | 47.00 | 60.68 | |||||||||||||
1978 | 45.06 | 51.57 | 58.23 | a | 59.17 | 63.06 | 74.83 | 77.52 | 73.77 | i | 66.80 | 65.71 | 47.23 | 42.03 | b | 59.20 | a | |||||||||
1979 | 38.21 | b | 45.68 | i | 58.57 | a | 58.63 | 67.70 | a | 74.00 | 79.48 | 76.45 | 75.50 | 65.61 | 52.23 | 49.90 | 63.30 | a | ||||||||
1980 | 42.00 | 49.34 | 51.65 | 61.90 | 64.16 | 65.67 | 78.10 | a | 75.55 | 72.90 | 66.55 | 53.63 | 49.48 | 60.91 | ||||||||||||
1981 | 52.20 | a | 50.93 | 57.90 | 58.60 | 64.10 | 67.77 | 75.71 | 83.45 | 74.83 | 62.23 | 56.63 | 47.39 | 62.64 | ||||||||||||
1982 | 42.19 | 48.71 | 54.42 | 56.50 | 67.27 | a | 74.45 | a | 75.19 | 77.13 | a | 74.24 | m | ----- | z | ----- | z | 43.50 | u | 61.98 | d | |||||
1983 | 50.60 | a | 52.71 | 56.52 | 61.87 | 68.74 | 68.20 | 71.74 | 76.26 | 70.23 | 62.45 | 53.97 | 40.00 | 61.11 | ||||||||||||
1984 | 48.26 | 52.62 | 56.58 | 56.67 | 62.16 | 68.27 | 78.16 | 80.72 | f | 72.97 | 58.87 | 52.07 | 42.39 | 59.00 | a | |||||||||||
1985 | 43.87 | 46.71 | 52.90 | 60.03 | 67.33 | a | 72.30 | 86.00 | 78.81 | 69.00 | 61.68 | 44.07 | a | 41.67 | g | 62.06 | a | |||||||||
1986 | 51.57 | c | 51.07 | a | 60.65 | 59.63 | 65.16 | 75.70 | 72.74 | 85.94 | 70.13 | 67.13 | 52.83 | a | 45.65 | 63.18 | ||||||||||
1987 | 45.94 | 53.14 | 56.55 | 64.57 | 69.87 | 76.20 | 74.94 | 82.74 | 78.87 | 73.23 | 55.20 | 43.32 | 64.55 | |||||||||||||
1988 | 44.87 | 52.14 | 56.32 | 60.97 | 65.55 | 71.00 | 78.84 | 78.48 | 75.73 | 65.52 | 51.37 | 47.26 | 62.34 | |||||||||||||
1989 | 46.10 | 43.43 | 52.00 | 65.13 | 66.58 | 73.93 | 72.97 | 74.48 | 79.00 | 62.71 | 53.34 | a | 44.50 | a | 61.18 | |||||||||||
1990 | 48.10 | 47.68 | 58.68 | 62.70 | 63.74 | 70.33 | 81.35 | 79.97 | 76.63 | 61.13 | 52.97 | 39.16 | 61.87 | |||||||||||||
1991 | 46.29 | 57.78 | a | 52.74 | 57.67 | 60.42 | 66.30 | 79.10 | 80.10 | 79.90 | a | 67.87 | 52.13 | 45.37 | d | 62.14 | ||||||||||
1992 | 51.12 | f | 57.52 | 63.29 | 63.37 | 72.97 | a | 77.27 | 80.10 | b | 83.61 | 72.87 | 65.81 | 50.80 | 43.58 | 66.47 | a | |||||||||
1993 | 42.13 | 48.96 | 56.74 | 57.87 | 69.58 | 68.93 | 69.10 | 76.90 | 78.03 | 66.50 | a | 47.23 | 45.55 | 60.63 | ||||||||||||
1994 | 48.32 | 46.86 | 59.58 | 61.47 | 68.35 | 69.87 | 80.94 | 79.48 | 77.17 | 62.16 | 45.40 | 46.81 | 62.20 | |||||||||||||
1995 | 49.97 | 53.89 | 57.32 | 59.10 | 69.77 | 71.20 | 78.19 | 76.81 | 75.17 | 62.10 | 56.45 | a | 47.00 | 63.08 | ||||||||||||
1996 | 44.77 | 51.31 | 55.81 | 60.87 | 61.84 | 71.20 | 81.61 | 80.77 | 70.90 | 61.74 | 50.43 | 47.00 | 61.52 | |||||||||||||
1997 | 45.52 | 51.57 | 54.32 | 59.93 | 72.13 | 70.70 | 78.58 | 81.52 | 75.93 | 60.90 | 57.43 | 45.65 | 62.85 | |||||||||||||
1998 | 48.55 | 52.75 | 57.06 | 61.72 | a | 61.63 | a | 70.77 | 79.16 | 82.16 | 78.83 | 61.87 | 52.30 | 44.70 | a | 62.63 | ||||||||||
1999 | 46.68 | 48.82 | 52.68 | 60.30 | 63.32 | 68.23 | 76.32 | 77.48 | 78.53 | 65.29 | 55.23 | 48.52 | 61.78 | |||||||||||||
2000 | 45.77 | 50.93 | 53.58 | 63.63 | 65.32 | 75.20 | 77.16 | 78.29 | 73.13 | 62.71 | 50.03 | a | 46.00 | 61.81 | ||||||||||||
2001 | 47.45 | 51.29 | 55.87 | 57.45 | a | 70.74 | 70.23 | 76.45 | 79.23 | 76.10 | 60.87 | 53.00 | 45.45 | 62.01 | ||||||||||||
2002 | 44.23 | 51.64 | 50.58 | 59.17 | 63.42 | 72.97 | 79.23 | 79.61 | 76.03 | 63.32 | 55.20 | 49.03 | 62.04 | |||||||||||||
2003 | 51.26 | 52.46 | 54.45 | 58.03 | 66.71 | 75.50 | 82.74 | 80.65 | 76.90 | 64.26 | 50.03 | 47.00 | b | 63.33 | ||||||||||||
2004 | 41.17 | a | 51.52 | 59.35 | 65.70 | 65.71 | 73.77 | 81.87 | a | 80.32 | 70.30 | 63.03 | 50.80 | 47.39 | 62.58 | |||||||||||
2005 | 48.29 | 53.89 | 59.68 | 59.40 | 67.03 | 68.30 | 79.48 | 81.71 | 71.93 | 61.65 | 50.10 | a | 44.52 | 62.17 | ||||||||||||
2006 | 48.61 | 49.54 | 52.71 | 61.97 | ----- | z | 74.37 | 79.84 | 79.23 | 75.50 | 62.23 | 51.21 | b | 45.52 | 61.88 | a | ||||||||||
2007 | 44.18 | c | 49.37 | a | 56.74 | 58.90 | a | 67.20 | a | 70.00 | 79.42 | 76.61 | 70.47 | 59.39 | 51.17 | 43.62 | b | 60.59 | ||||||||
2008 | 42.14 | b | 51.39 | a | 50.35 | 54.97 | 65.26 | 69.10 | 77.90 | 77.10 | 75.37 | 61.33 | a | 53.80 | 41.19 | 59.99 | ||||||||||
2009 | 44.06 | 50.11 | 49.71 | 59.33 | 69.10 | 71.77 | 84.06 | 77.43 | a | 74.80 | 60.19 | 52.10 | 42.23 | 61.24 | ||||||||||||
2010 | 50.87 | 55.43 | 58.13 | 58.27 | 61.77 | 66.90 | 76.45 | 77.32 | 70.80 | 62.19 | 48.97 | 47.19 | 61.19 | |||||||||||||
2011 | 45.48 | 45.29 | 50.58 | 53.70 | 60.42 | 67.69 | a | 73.58 | 78.06 | 77.27 | 60.35 | 49.63 | 43.81 | 58.82 | ||||||||||||
2012 | 45.87 | 49.00 | 49.52 | 59.43 | 65.16 | 67.57 | 75.19 | 80.71 | 76.50 | 62.39 | 52.47 | 44.68 | 60.71 | |||||||||||||
2013 | 39.84 | 48.50 | 55.29 | 59.63 | 66.77 | 72.13 | 79.97 | 78.65 | 71.43 | 61.84 | 50.83 | 39.03 | 60.33 | |||||||||||||
2014 | 46.35 | 44.11 | 56.00 | 59.86 | a | 69.16 | 70.47 | 81.26 | 82.90 | 77.20 | 66.42 | 51.60 | 48.32 | 62.80 | ||||||||||||
2015 | 49.23 | 55.61 | 61.48 | 60.43 | 67.39 | 79.87 | 84.10 | 82.94 | 72.10 | 66.87 | 51.40 | 45.26 | 64.72 | |||||||||||||
2016 | 47.06 | 54.52 | 55.35 | 66.63 | 68.94 | 73.97 | 75.94 | 82.00 | 71.40 | 60.32 | 57.03 | 40.68 | 62.82 | |||||||||||||
2017 | 39.71 | 47.54 | 52.23 | 57.23 | 68.52 | 72.57 | 80.39 | 85.16 | 77.03 | 62.68 | 51.77 | 44.13 | 61.58 | |||||||||||||
2018 | 49.06 | 46.25 | 52.94 | 59.77 | 70.52 | 72.27 | 84.00 | 81.35 | 73.03 | 64.06 | 53.87 | 47.23 | 62.86 | |||||||||||||
2019 | 48.10 | 41.61 | 54.58 | 59.67 | 68.87 | 72.33 | 76.68 | 79.42 | 69.87 | 58.77 | 53.17 | 45.52 | 60.71 | |||||||||||||
2020 | 47.03 | 49.66 | 51.65 | 61.57 | 66.81 | 69.97 | 77.48 | 80.26 | 75.17 | 63.16 | 49.97 | 47.55 | 61.69 | |||||||||||||
2021 | 48.23 | 43.96 | 53.32 | 64.50 | 66.84 | 79.17 | 81.00 | 80.65 | 74.20 | 59.10 | 52.90 | 42.90 | 62.23 | |||||||||||||
2022 | 46.52 | 48.64 | 54.87 | 54.70 | 61.10 | 70.67 | 81.45 | 83.74 | 78.13 | 68.00 | 48.30 | 42.16 | 61.52 | |||||||||||||
2023 | 46.74 | 45.25 | 49.71 | 55.57 | 72.03 | 73.10 | 81.74 | 83.58 | 72.00 | 63.84 | 52.80 | 47.87 | 62.02 | |||||||||||||
2024 | 43.03 | 50.38 | 52.17 | m | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 46.71 | j | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 45.34 | 50.50 | 54.70 | 59.96 | 66.73 | 71.73 | 78.69 | 79.25 | 74.55 | 63.54 | 52.45 | 45.86 | 62.08 | |||||||||||||
S.D. | 4.06 | 3.56 | 3.23 | 3.18 | 3.50 | 2.98 | 3.31 | 3.41 | 3.73 | 3.14 | 2.88 | 2.89 | 1.33 | |||||||||||||
SKEW | -0.90 | -0.19 | 0.47 | 0.12 | 0.07 | 0.23 | -0.33 | -0.05 | 0.30 | 0.86 | -0.25 | -0.18 | 0.21 | |||||||||||||
MAX | 53.39 | 57.78 | 63.29 | 66.63 | 75.94 | 79.87 | 86.00 | 88.42 | 85.58 | 73.40 | 59.66 | 54.68 | 66.22 | |||||||||||||
MIN | 31.14 | 41.10 | 49.52 | 52.83 | 59.39 | 65.63 | 69.10 | 70.00 | 66.80 | 58.68 | 44.07 | 39.03 | 58.82 | |||||||||||||
YRS | 83 | 83 | 83 | 84 | 83 | 82 | 82 | 79 | 83 | 83 | 84 | 81 | 66 |