YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1923 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1924 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1925 | ----- | z | ----- | z | 54.17 | b | 61.03 | a | 71.68 | 69.29 | f | 83.48 | 78.16 | 72.03 | 64.77 | 49.07 | 47.13 | 64.61 | c | |||||||
1926 | 45.90 | 51.40 | c | 62.90 | 71.45 | a | 67.06 | 80.20 | 84.23 | 79.06 | 68.50 | 62.94 | 52.70 | 42.19 | 64.04 | |||||||||||
1927 | 40.87 | 46.93 | 51.61 | 58.83 | 60.71 | 73.38 | a | 80.65 | 81.39 | 66.96 | c | 59.90 | a | 51.07 | 40.80 | a | 59.42 | |||||||||
1928 | 42.39 | 49.31 | 55.03 | a | 56.73 | 75.23 | 68.67 | 79.97 | 80.30 | a | 74.13 | 60.00 | 49.47 | 42.77 | 61.17 | |||||||||||
1929 | 39.94 | 44.37 | a | 53.90 | 54.87 | 67.65 | 72.20 | 84.19 | 85.10 | 76.62 | a | 67.35 | 51.52 | a | 46.90 | 62.05 | ||||||||||
1930 | 31.74 | 48.00 | a | 58.55 | 64.67 | 63.16 | 73.47 | 81.22 | d | 82.00 | 73.60 | 61.61 | 51.47 | 44.87 | 61.20 | |||||||||||
1931 | 47.23 | 48.30 | a | 53.35 | 65.27 | 74.48 | 72.97 | 85.03 | 84.45 | 71.33 | 63.84 | 47.80 | 40.45 | 62.88 | ||||||||||||
1932 | 40.94 | 43.86 | 51.19 | 60.57 | 65.90 | 76.47 | 77.06 | 78.65 | 79.67 | 64.55 | 52.00 | 39.26 | 60.84 | |||||||||||||
1933 | 40.81 | 41.82 | 51.58 | 61.80 | 59.10 | 73.10 | 82.00 | 82.97 | 66.33 | 65.03 | 53.23 | 47.16 | 60.41 | |||||||||||||
1934 | 47.44 | d | 56.25 | 62.94 | 70.67 | 71.26 | 72.37 | 77.68 | 82.74 | 74.70 | 65.26 | 51.50 | 45.06 | 64.82 | ||||||||||||
1935 | 39.77 | 49.86 | 48.35 | 59.77 | 69.39 | 75.10 | 79.13 | 83.65 | 80.57 | 59.32 | 47.27 | 44.87 | 61.42 | |||||||||||||
1936 | 44.58 | 40.76 | 52.13 | 64.50 | 71.74 | 72.27 | 78.39 | 83.32 | 75.97 | 71.19 | 53.50 | 44.94 | 62.77 | |||||||||||||
1937 | 33.58 | 41.79 | 51.97 | 56.00 | 70.81 | 74.90 | 77.16 | 75.87 | 73.73 | 64.71 | 51.80 | 46.35 | 59.89 | |||||||||||||
1938 | 44.45 | 45.79 | 50.97 | 62.27 | 69.55 | 76.87 | 85.74 | 78.58 | 79.43 | 63.00 | 47.07 | 45.16 | 62.41 | |||||||||||||
1939 | 46.13 | 42.32 | 57.10 | 67.63 | 70.84 | 69.07 | 82.13 | 85.65 | 77.67 | 62.71 | 54.40 | 47.23 | 63.57 | |||||||||||||
1940 | 42.68 | 46.97 | 55.94 | 60.17 | 72.23 | 76.83 | 76.81 | 81.55 | 70.57 | 62.23 | 46.07 | 45.13 | 61.43 | |||||||||||||
1941 | 45.52 | 52.50 | 61.48 | 62.33 | 65.03 | 68.90 | a | 82.61 | 75.87 | 66.47 | 60.55 | 51.47 | 44.87 | 61.47 | ||||||||||||
1942 | 41.03 | 46.54 | 51.58 | ----- | z | 61.19 | d | 67.43 | 79.71 | 80.16 | 77.83 | 64.65 | 47.13 | 41.97 | 59.93 | a | ||||||||||
1943 | 38.26 | 47.68 | 50.23 | 61.20 | 61.94 | 66.97 | 78.68 | 74.48 | 80.07 | 61.06 | 52.80 | 45.00 | 59.86 | |||||||||||||
1944 | 42.87 | 45.66 | 51.32 | 58.23 | 65.48 | 67.90 | 78.52 | 78.48 | 76.27 | 66.90 | 49.70 | 43.48 | 60.40 | |||||||||||||
1945 | 44.23 | 45.21 | 47.90 | 53.30 | 65.42 | 70.14 | a | 82.10 | 80.65 | 71.10 | 64.52 | 44.90 | 42.71 | 59.35 | ||||||||||||
1946 | 43.23 | 44.79 | 49.42 | 58.13 | 67.19 | 67.33 | 78.06 | 80.16 | 69.73 | 55.00 | 46.47 | 44.84 | 58.70 | |||||||||||||
1947 | 39.70 | a | 50.11 | 57.84 | 62.13 | 71.84 | 66.80 | 75.23 | 74.32 | 73.77 | 58.94 | 49.43 | 43.71 | 60.32 | ||||||||||||
1948 | 44.84 | 42.59 | 48.61 | 53.17 | 61.29 | 73.37 | 73.97 | 72.19 | 71.07 | 61.65 | 46.00 | 38.10 | a | 57.24 | ||||||||||||
1949 | 36.55 | b | 41.07 | 49.77 | 62.69 | a | 68.19 | 71.67 | 74.80 | a | 76.77 | 75.20 | 56.77 | 56.17 | 41.63 | a | 59.27 | |||||||||
1950 | 32.68 | 40.71 | 46.71 | 54.83 | 63.45 | 68.83 | 78.13 | 81.52 | 76.13 | 57.45 | 47.80 | 46.84 | 57.92 | |||||||||||||
1951 | 40.55 | 44.61 | 47.10 | a | 65.37 | 65.00 | 75.57 | 78.68 | 78.65 | 78.73 | 58.29 | 50.00 | 39.90 | 60.20 | ||||||||||||
1952 | 37.52 | 43.34 | 48.39 | 63.17 | a | 66.06 | 65.80 | 81.45 | 80.03 | a | 80.00 | 75.37 | a | 49.33 | 41.45 | 60.99 | ||||||||||
1953 | 46.13 | 47.81 | a | 50.52 | 55.60 | 59.84 | 63.93 | 78.10 | 76.20 | a | 76.07 | 62.55 | 51.40 | 44.65 | 59.40 | |||||||||||
1954 | 39.57 | a | 47.43 | 50.87 | 57.20 | 65.52 | 64.73 | 71.77 | 68.55 | 68.77 | 58.13 | a | 51.07 | 42.87 | 57.21 | |||||||||||
1955 | 42.10 | 44.44 | a | 44.48 | 51.23 | 61.27 | a | 68.23 | 69.90 | 77.58 | 71.63 | 59.65 | 42.97 | 40.14 | b | 56.14 | ||||||||||
1956 | 40.65 | 39.59 | 46.61 | 61.52 | a | 67.94 | 66.30 | 80.87 | a | 75.17 | a | 74.17 | 56.61 | 50.13 | 43.52 | 58.59 | ||||||||||
1957 | 35.23 | a | 43.96 | 49.32 | 58.10 | 65.26 | 70.53 | 75.42 | 74.00 | 78.73 | 58.93 | a | 49.50 | 44.10 | 58.59 | |||||||||||
1958 | 44.97 | 50.36 | 51.71 | 56.33 | 73.16 | 73.43 | b | 83.26 | 83.13 | 73.23 | 66.10 | 48.70 | 48.00 | 62.70 | ||||||||||||
1959 | 42.23 | 43.79 | 51.48 | 59.27 | 61.23 | 69.73 | 80.42 | 77.13 | 67.50 | 62.16 | 52.27 | 44.42 | 59.30 | |||||||||||||
1960 | 37.23 | 46.28 | 51.29 | 57.47 | 60.35 | 73.03 | 81.81 | 73.94 | 74.13 | 63.48 | 48.23 | 44.90 | 59.35 | |||||||||||||
1961 | 46.77 | 47.29 | 49.55 | 56.27 | 62.48 | 77.47 | 80.87 | 83.19 | 68.60 | 59.32 | 48.80 | 41.94 | 60.21 | |||||||||||||
1962 | 41.77 | 47.64 | 47.03 | 61.23 | 56.65 | 70.83 | 76.52 | 75.00 | a | 73.97 | 61.06 | 51.63 | 47.13 | 59.21 | ||||||||||||
1963 | ----- | z | 53.04 | 51.65 | 53.23 | 65.71 | 66.73 | 71.16 | 76.10 | 76.77 | 62.32 | 48.77 | 45.16 | 60.97 | a | |||||||||||
1964 | 41.74 | 48.48 | 49.42 | 54.13 | 61.68 | 66.23 | 75.84 | 72.81 | 69.70 | 63.55 | 46.13 | 40.10 | 57.48 | |||||||||||||
1965 | 42.00 | a | 48.00 | 56.74 | 59.87 | 61.23 | 70.00 | 80.81 | 77.26 | 71.63 | 65.40 | a | 51.33 | 43.23 | 60.62 | |||||||||||
1966 | 40.35 | 46.93 | 52.03 | 61.10 | 67.29 | 69.13 | 74.84 | 77.65 | 73.90 | 61.55 | 50.57 | 43.35 | 59.89 | |||||||||||||
1967 | 43.81 | 49.61 | 48.87 | 53.07 | 66.26 | 74.07 | 80.68 | 87.32 | 79.43 | 58.84 | 52.00 | 41.00 | a | 61.25 | ||||||||||||
1968 | 41.00 | 51.07 | 56.16 | 56.23 | 64.00 | 70.93 | 78.90 | 74.03 | 71.80 | 58.58 | 49.30 | 39.23 | a | 59.27 | ||||||||||||
1969 | 34.06 | 41.96 | 53.97 | 58.27 | 69.87 | 73.70 | 75.52 | 76.71 | 72.73 | 58.13 | 52.30 | 44.10 | 59.28 | |||||||||||||
1970 | 41.19 | 51.32 | 52.23 | 52.20 | 65.48 | 75.53 | 79.52 | 80.77 | 68.14 | a | 59.81 | 48.03 | 39.55 | 59.48 | ||||||||||||
1971 | 39.45 | 46.04 | 45.00 | 55.67 | 64.81 | 65.53 | 80.23 | 82.06 | 69.13 | 58.48 | 47.03 | 39.52 | 57.75 | |||||||||||||
1972 | 39.29 | 45.17 | 51.55 | 53.30 | 68.16 | 70.97 | 82.06 | 82.90 | 69.07 | 63.35 | 49.73 | 37.94 | 59.46 | |||||||||||||
1973 | 39.48 | 50.86 | 50.74 | 58.77 | 69.00 | 70.83 | 79.77 | 76.16 | 72.20 | 59.52 | 41.83 | 44.52 | 59.47 | |||||||||||||
1974 | 38.32 | 44.57 | 50.10 | 55.00 | 59.77 | 72.40 | 75.32 | 79.71 | 81.60 | 68.03 | 49.47 | 44.13 | 59.87 | |||||||||||||
1975 | 42.61 | 41.57 | 47.71 | 51.93 | 64.23 | 67.83 | 77.52 | 72.58 | 79.17 | 57.19 | 45.57 | 43.74 | 57.64 | |||||||||||||
1976 | 44.35 | 45.38 | 47.74 | 55.88 | e | 66.17 | a | 67.77 | 76.84 | 73.68 | 74.47 | 64.32 | 53.93 | 44.32 | 59.57 | |||||||||||
1977 | 43.55 | 52.36 | 48.03 | 62.73 | 58.55 | 73.03 | 74.48 | 83.16 | 67.37 | 62.23 | 45.27 | 44.65 | 59.62 | |||||||||||||
1978 | 43.45 | 49.29 | 56.61 | 57.40 | 60.58 | 74.40 | 77.81 | 75.90 | 66.10 | 67.00 | 45.23 | 39.45 | 59.44 | |||||||||||||
1979 | 35.26 | 40.64 | 55.65 | 55.70 | 66.52 | 73.20 | 78.94 | 75.23 | 77.00 | 64.74 | 49.00 | 46.03 | 59.82 | |||||||||||||
1980 | 39.35 | 46.48 | 48.81 | 60.77 | 62.74 | 64.50 | 77.19 | 74.48 | 73.33 | 65.32 | 50.50 | 45.00 | 59.04 | |||||||||||||
1981 | 48.84 | 48.39 | 55.45 | 57.57 | 62.55 | 67.69 | a | 77.26 | 83.39 | 73.73 | 58.61 | 51.13 | 43.07 | b | 60.64 | |||||||||||
1982 | 39.65 | 44.07 | 51.97 | 55.28 | a | 65.27 | a | 72.47 | 75.58 | 77.26 | 70.72 | a | 59.97 | 46.59 | a | 42.74 | 58.46 | |||||||||
1983 | 45.39 | 47.67 | a | 54.06 | 59.30 | 68.52 | 66.67 | 70.65 | 76.42 | 69.57 | 61.90 | 48.50 | 35.42 | 58.67 | ||||||||||||
1984 | 45.03 | 49.48 | 54.61 | 54.27 | 61.84 | 67.43 | 79.35 | 78.97 | 71.00 | 56.40 | a | 46.80 | 38.58 | 58.65 | ||||||||||||
1985 | 42.97 | 43.21 | 52.55 | 60.90 | 64.71 | 73.47 | 84.97 | 77.87 | 67.30 | 60.58 | 40.20 | 40.61 | 59.11 | |||||||||||||
1986 | 45.87 | 45.32 | 58.36 | c | 56.87 | 65.26 | 75.60 | 72.55 | 84.87 | 66.83 | 65.94 | 50.63 | 44.32 | 61.03 | ||||||||||||
1987 | 41.29 | 47.57 | 52.03 | 64.10 | 67.74 | 74.83 | 73.70 | a | 81.00 | 77.90 | 72.16 | 50.73 | 39.80 | a | 61.91 | |||||||||||
1988 | 37.81 | 48.45 | 52.13 | 58.70 | 62.58 | 69.27 | 78.80 | a | 80.06 | 75.23 | 68.77 | 45.87 | 42.39 | 60.00 | ||||||||||||
1989 | 41.39 | 39.00 | 48.61 | 62.60 | 63.74 | 72.37 | 74.07 | a | 72.81 | 76.93 | 60.65 | 50.60 | 43.68 | 58.87 | ||||||||||||
1990 | 43.65 | 40.75 | 56.19 | 62.97 | 61.52 | 68.67 | 80.00 | 78.10 | 77.23 | 56.94 | 48.67 | 36.07 | a | 59.23 | ||||||||||||
1991 | 41.65 | 51.82 | 49.84 | 54.13 | 58.65 | 63.77 | 79.16 | 79.71 | 80.13 | 65.03 | 48.37 | 44.00 | 59.69 | |||||||||||||
1992 | 45.37 | a | 51.45 | 61.23 | 60.47 | 73.39 | 74.80 | 77.74 | 80.84 | 71.80 | 63.13 | 48.00 | 38.58 | 62.23 | ||||||||||||
1993 | 34.74 | 43.04 | 52.55 | 54.87 | 67.74 | 66.60 | 67.48 | 75.03 | 78.27 | 64.39 | 45.27 | 42.77 | 57.73 | |||||||||||||
1994 | 45.65 | 43.71 | 57.03 | 60.37 | 67.23 | 68.80 | 80.81 | 77.90 | 76.90 | 58.55 | 41.03 | 39.90 | 59.82 | |||||||||||||
1995 | 43.10 | 50.21 | 51.32 | 56.20 | 66.48 | 68.60 | 76.97 | 75.16 | 74.87 | 57.16 | 52.47 | 42.65 | 59.60 | |||||||||||||
1996 | 41.73 | a | 42.76 | 51.87 | 58.03 | 60.06 | 70.33 | 81.10 | k | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 54.13 | f | |||||
1997 | 40.77 | 46.79 | 50.06 | 55.63 | 69.35 | 67.55 | a | 75.54 | e | 79.63 | a | 71.64 | b | 56.90 | a | 51.18 | b | 42.26 | 58.94 | |||||||
1998 | 41.10 | b | 47.11 | a | 52.14 | c | 57.63 | 58.58 | 68.87 | 79.00 | b | 80.60 | a | 77.64 | b | 59.07 | d | 46.90 | 38.70 | a | 58.95 | |||||
1999 | 42.13 | 41.79 | 47.84 | 55.93 | 60.65 | 65.50 | 75.29 | 76.23 | 76.40 | 62.81 | 50.10 | 44.16 | 58.23 | |||||||||||||
2000 | 38.50 | a | 45.03 | 50.10 | 61.50 | 61.97 | 72.59 | a | 75.68 | 77.87 | 71.03 | 58.43 | a | 44.28 | a | 42.60 | a | 58.30 | ||||||||
2001 | 44.29 | 47.61 | 53.33 | a | 54.77 | 69.48 | 66.90 | a | 73.52 | 76.87 | 74.38 | a | 59.23 | 48.31 | a | 40.03 | 59.06 | |||||||||
2002 | 39.81 | 45.93 | 47.13 | 57.37 | 61.61 | 71.93 | a | 79.32 | 78.87 | 76.21 | a | 62.07 | b | 50.00 | 42.84 | 59.42 | ||||||||||
2003 | 45.94 | 48.68 | 49.94 | 53.53 | 63.42 | 74.30 | 82.87 | 80.35 | 74.13 | 60.71 | 44.40 | 41.00 | a | 59.94 | ||||||||||||
2004 | 37.19 | 46.15 | b | 56.63 | a | 63.07 | 62.10 | 69.93 | a | 81.65 | 79.73 | a | 67.60 | 59.42 | 48.33 | 42.97 | a | 59.56 | ||||||||
2005 | 41.65 | 50.50 | 55.71 | 56.40 | 63.45 | 64.53 | 78.43 | a | 81.29 | 71.57 | 58.52 | 46.97 | a | 38.35 | 58.95 | |||||||||||
2006 | 42.73 | a | 43.54 | 47.23 | 58.93 | ----- | z | 70.43 | 79.87 | 78.35 | 74.70 | 58.61 | 45.77 | 41.03 | 58.29 | a | ||||||||||
2007 | 39.97 | 44.63 | a | 53.39 | 56.93 | 65.35 | 68.27 | 78.68 | 75.71 | 70.20 | 54.26 | 47.57 | 39.13 | 57.84 | ||||||||||||
2008 | 36.03 | 45.66 | 47.13 | 51.31 | a | 62.35 | 68.50 | 78.29 | 78.03 | 72.97 | 56.97 | 49.60 | 37.70 | a | 57.04 | |||||||||||
2009 | 39.45 | 43.54 | 45.26 | 55.53 | 66.39 | 70.27 | 82.65 | 78.45 | 74.70 | 55.27 | a | 45.33 | 37.00 | 57.82 | ||||||||||||
2010 | 44.16 | 48.21 | 52.29 | 54.53 | 58.43 | a | 64.10 | 77.26 | 77.65 | 68.43 | 59.35 | 44.77 | 39.32 | 57.38 | ||||||||||||
2011 | 40.42 | 42.11 | 45.19 | 50.70 | 58.00 | 65.52 | a | 71.16 | 77.33 | a | 76.63 | 57.00 | 44.70 | 40.61 | 55.78 | |||||||||||
2012 | 40.42 | 44.76 | 43.93 | a | 58.23 | 63.23 | 63.93 | 74.35 | 80.29 | 76.43 | b | 59.16 | 47.83 | 39.45 | 57.67 | |||||||||||
2013 | 36.73 | a | 44.46 | 51.58 | 58.10 | 65.37 | a | 70.40 | 81.52 | 79.29 | 70.37 | c | 57.45 | 47.29 | b | 37.57 | a | 58.34 | ||||||||
2014 | 43.77 | a | 38.79 | 52.26 | 57.89 | b | 66.97 | 67.00 | 80.39 | 80.35 | 74.93 | 62.48 | 46.83 | a | 43.23 | 59.57 | ||||||||||
2015 | 45.97 | 51.57 | 57.90 | 58.93 | 64.35 | 78.57 | 82.48 | 82.06 | 71.37 | 63.58 | 45.77 | 41.03 | b | 61.97 | ||||||||||||
2016 | 40.26 | 48.69 | 49.70 | a | 64.88 | d | 66.36 | f | 72.00 | d | 76.00 | g | 81.96 | d | 69.28 | e | 55.27 | e | 50.42 | f | 36.04 | f | 60.26 | d | ||
2017 | 34.54 | e | 41.26 | e | 48.52 | f | 54.89 | b | 66.62 | b | 71.64 | b | 79.63 | a | 84.74 | 77.19 | d | 57.00 | a | 46.89 | b | 41.17 | b | 59.60 | a | |
2018 | 44.11 | c | 42.96 | 48.97 | 57.43 | 68.61 | 69.48 | a | 82.79 | b | 80.68 | 71.69 | a | 60.21 | b | 48.93 | 41.77 | a | 59.80 | |||||||
2019 | 43.80 | a | 36.82 | 49.13 | a | 56.97 | a | 66.84 | 72.14 | a | 75.24 | b | 78.11 | c | 65.89 | b | 55.00 | b | 50.32 | b | 42.84 | f | 59.11 | a | ||
2020 | 41.41 | b | 45.96 | a | 47.17 | b | 56.89 | c | 63.32 | c | 66.60 | 75.48 | 77.67 | a | 79.86 | w | 53.18 | n | 48.38 | i | 43.04 | d | 57.51 | c | ||
2021 | 42.93 | a | 43.65 | e | 50.10 | a | 62.82 | b | 67.13 | a | 81.04 | c | 82.86 | c | 81.17 | b | 74.71 | b | 57.57 | a | 50.72 | a | 42.00 | h | 63.16 | a |
2022 | 46.32 | l | 47.96 | b | 52.86 | c | 53.00 | h | 59.61 | c | 72.25 | b | 83.33 | a | 86.14 | b | 78.24 | a | 70.94 | 46.77 | 40.87 | a | 63.90 | b | ||
2023 | 45.77 | 44.68 | 47.71 | 55.79 | b | 71.40 | a | 74.50 | 83.87 | a | 85.50 | c | 72.32 | b | 64.10 | 52.22 | c | 47.62 | b | 62.12 | ||||||
2024 | 42.19 | d | 47.81 | b | 53.08 | g | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 45.00 | j |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 41.46 | 46.03 | 51.66 | 58.39 | 65.16 | 70.55 | 78.49 | 78.91 | 73.48 | 61.42 | 48.73 | 42.42 | 59.73 | |||||||||||||
S.D. | 3.50 | 3.61 | 3.97 | 4.07 | 4.09 | 3.80 | 3.65 | 3.56 | 3.95 | 4.02 | 2.97 | 2.82 | 1.70 | |||||||||||||
SKEW | -0.53 | 0.06 | 0.66 | 0.66 | 0.25 | 0.31 | -0.44 | -0.03 | -0.06 | 0.79 | -0.31 | -0.20 | 0.50 | |||||||||||||
MAX | 48.84 | 56.25 | 62.94 | 71.45 | 75.23 | 81.04 | 85.74 | 87.32 | 81.60 | 75.37 | 56.17 | 48.00 | 64.82 | |||||||||||||
MIN | 31.74 | 36.82 | 43.93 | 50.70 | 56.65 | 63.77 | 67.48 | 68.55 | 65.89 | 54.26 | 40.20 | 35.42 | 55.78 | |||||||||||||
YRS | 97 | 99 | 98 | 97 | 97 | 98 | 97 | 98 | 97 | 97 | 96 | 95 | 88 |