YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1928 | ----- | z | ----- | z | ----- | z | ----- | z | 61.87 | 63.15 | 74.73 | 70.61 | 62.90 | 51.35 | 38.52 | 25.53 | 56.08 | d | ||||||||
1929 | 22.47 | 23.98 | 38.76 | 44.43 | 56.31 | 65.25 | 75.95 | 76.35 | 60.82 | 52.89 | 35.27 | 35.62 | c | 49.01 | ||||||||||||
1930 | 20.40 | 37.95 | 41.35 | 56.05 | 55.21 | 67.85 | 77.58 | 73.34 | 63.50 | 48.60 | 31.83 | 18.74 | 49.37 | |||||||||||||
1931 | 18.74 | 32.82 | 40.00 | 50.07 | 57.73 | 71.80 | 77.68 | 74.95 | 63.63 | 54.11 | 32.98 | 22.84 | 49.78 | |||||||||||||
1932 | 18.82 | 30.33 | 38.82 | 48.78 | 57.55 | 65.58 | 74.34 | 72.69 | 63.37 | 48.08 | 41.68 | 18.03 | 48.17 | |||||||||||||
1933 | 24.29 | 16.27 | 39.02 | 45.37 | 52.23 | 73.07 | 79.48 | 72.35 | 65.70 | 56.27 | 41.82 | 37.81 | 50.31 | |||||||||||||
1934 | 33.94 | 42.18 | 49.21 | 56.60 | 66.68 | 67.60 | 78.60 | 76.68 | 62.57 | 54.87 | 42.60 | 31.27 | 55.23 | |||||||||||||
1935 | 32.06 | 36.89 | 39.84 | 48.92 | 54.79 | 68.98 | 78.39 | 75.66 | 67.78 | 51.44 | 36.30 | 30.66 | 51.81 | |||||||||||||
1936 | 28.95 | 32.41 | 40.44 | 53.27 | 61.87 | 70.45 | 78.21 | 75.47 | 61.90 | 52.35 | 36.22 | 33.63 | 52.10 | |||||||||||||
1937 | 13.19 | 30.70 | 41.02 | 46.43 | 61.55 | 66.83 | 77.56 | 76.44 | 67.37 | 54.34 | 43.58 | 36.32 | 51.28 | |||||||||||||
1938 | 35.68 | 36.95 | 39.97 | 50.03 | 55.24 | 67.87 | 73.77 | 74.02 | 68.68 | 54.05 | 32.33 | 34.13 | 51.89 | |||||||||||||
1939 | 30.50 | 22.59 | 41.52 | 52.57 | 60.53 | 64.85 | 75.65 | 74.45 | 64.17 | 52.16 | 42.95 | 36.29 | 51.52 | |||||||||||||
1940 | 30.11 | 37.84 | 45.05 | 51.25 | 63.69 | 71.72 | 79.39 | 77.21 | 65.33 | 55.66 | 35.60 | 32.55 | 53.78 | |||||||||||||
1941 | 30.63 | 38.62 | 42.98 | 46.87 | 60.05 | 65.65 | 75.66 | 73.77 | 59.72 | 49.23 | 38.95 | 34.47 | 51.38 | |||||||||||||
1942 | 20.45 | 27.02 | 35.84 | 50.55 | 53.18 | 64.77 | 78.21 | 74.40 | 64.25 | 52.71 | 40.52 | 33.27 | 49.60 | |||||||||||||
1943 | 30.97 | 33.64 | 40.19 | 55.68 | 56.00 | 63.78 | 76.03 | 75.66 | 67.55 | 54.81 | 39.93 | 31.29 | 52.13 | |||||||||||||
1944 | 19.19 | 29.33 | 36.35 | 46.27 | 58.90 | 62.93 | 76.03 | 73.84 | 63.83 | 56.11 | 38.37 | 30.87 | 49.34 | |||||||||||||
1945 | 32.10 | 36.32 | 38.90 | 44.85 | 58.61 | 60.22 | 75.89 | 73.50 | 60.58 | 55.08 | 39.17 | 29.95 | 50.43 | |||||||||||||
1946 | 27.10 | 34.30 | 43.98 | 54.60 | 57.10 | 69.02 | 77.34 | 75.34 | 63.42 | 46.60 | 38.25 | 35.71 | 51.90 | |||||||||||||
1947 | 22.06 | 38.48 | 44.61 | 48.57 | 62.76 | 63.92 | 77.53 | 74.15 | 64.92 | 56.39 | 35.52 | 29.79 | 51.56 | |||||||||||||
1948 | 30.10 | 33.21 | 35.65 | 49.73 | 59.05 | 68.02 | 75.66 | 75.47 | 65.93 | 53.11 | 35.47 | 25.18 | 50.55 | |||||||||||||
1949 | 11.55 | 22.75 | 42.40 | 53.55 | 60.10 | 66.93 | 76.77 | 76.00 | 67.12 | 48.31 | 44.30 | 30.10 | 49.99 | |||||||||||||
1950 | 26.55 | 36.12 | 40.77 | 48.50 | 54.24 | 65.93 | 74.29 | 73.76 | 63.42 | 57.90 | 41.53 | 35.37 | 51.53 | |||||||||||||
1951 | 29.58 | 36.32 | 37.08 | 50.23 | 59.02 | 63.73 | 75.74 | 73.48 | 64.58 | 50.50 | 37.05 | 26.06 | 50.28 | |||||||||||||
1952 | 26.98 | 28.57 | 33.34 | 51.82 | 60.60 | 67.82 | 74.60 | 76.31 | 68.10 | 57.40 | 34.27 | 31.98 | 50.98 | |||||||||||||
1953 | 39.48 | 36.93 | 43.23 | 46.42 | 52.92 | 66.65 | 78.44 | 75.73 | 68.15 | 54.03 | 46.08 | 29.81 | 53.15 | |||||||||||||
1954 | 33.98 | 36.34 | 38.52 | 53.67 | 61.50 | 65.28 | 78.31 | 73.21 | 64.80 | 52.31 | 43.93 | 30.24 | 52.67 | |||||||||||||
1955 | 21.13 | 23.98 | 36.68 | 45.73 | 56.77 | 66.23 | 75.45 | 76.32 | 65.02 | 52.84 | 35.63 | 37.10 | 49.41 | |||||||||||||
1956 | 35.45 | 26.31 | 42.34 | 49.87 | 60.40 | 69.58 | 76.35 | 72.68 | 66.97 | 52.11 | 34.25 | 30.02 | 51.36 | |||||||||||||
1957 | 25.95 | 40.27 | 43.13 | 48.40 | 57.19 | 66.83 | 76.95 | 76.50 | 64.60 | 52.15 | 34.48 | 33.42 | 51.66 | |||||||||||||
1958 | 30.71 | 41.61 | 39.11 | 47.15 | 65.10 | 70.55 | 74.89 | 77.74 | 65.35 | 55.31 | 38.77 | 36.21 | 53.54 | |||||||||||||
1959 | 33.89 | 36.04 | 41.37 | 51.58 | 55.69 | 71.53 | 77.11 | 74.10 | 61.98 | 51.02 | 37.63 | 27.84 | 51.65 | |||||||||||||
1960 | 25.60 | 28.62 | 42.45 | 50.77 | 58.65 | 70.98 | 81.18 | 74.18 | 68.22 | 51.52 | 40.38 | 29.60 | 51.84 | |||||||||||||
1961 | 28.68 | 38.12 | 42.94 | 50.10 | 60.79 | 74.65 | 79.87 | 77.79 | 59.92 | 49.92 | 35.28 | 28.21 | 52.19 | |||||||||||||
1962 | 20.48 | 31.34 | 35.10 | 52.78 | 58.68 | 68.13 | 75.90 | 73.06 | 65.80 | 55.31 | 41.58 | 28.35 | 50.54 | |||||||||||||
1963 | 19.50 | 38.62 | 39.40 | 44.28 | 60.73 | 63.23 | 77.81 | 77.89 | 67.80 | 57.79 | 38.85 | 24.35 | 50.85 | |||||||||||||
1964 | 21.85 | 25.72 | 31.98 | 45.57 | 55.77 | 63.20 | 77.48 | 71.94 | 61.52 | 52.92 | 37.72 | 33.32 | 48.25 | |||||||||||||
1965 | 31.02 | 32.96 | 36.73 | 51.02 | 54.73 | 64.82 | 74.95 | 70.87 | 57.48 | 54.50 | 46.05 | 30.19 | 50.44 | |||||||||||||
1966 | 30.60 | 29.39 | 41.63 | 49.60 | 62.63 | 69.15 | 80.10 | 74.08 | 67.53 | 49.92 | 43.10 | 29.24 | 52.25 | |||||||||||||
1967 | 29.39 | 37.46 | 44.21 | 46.07 | 56.26 | 64.53 | 78.34 | 78.55 | 66.68 | 52.35 | 42.95 | 25.06 | 51.82 | |||||||||||||
1968 | 24.52 | 38.21 | 44.68 | 45.35 | 56.37 | 67.48 | 78.26 | 69.34 | 61.37 | 51.66 | 38.53 | 26.84 | 50.22 | |||||||||||||
1969 | 32.16 | 28.71 | 38.40 | 50.35 | 64.00 | 64.77 | 76.56 | 77.61 | 69.70 | 47.69 | 39.43 | 32.37 | 51.81 | |||||||||||||
1970 | 34.63 | 40.39 | 40.52 | 44.12 | 58.76 | 67.55 | 76.60 | 77.63 | 59.02 | 47.02 | 42.52 | 29.15 | 51.49 | |||||||||||||
1971 | 32.40 | 34.88 | 40.39 | 48.15 | 56.60 | 67.43 | 76.39 | 76.87 | 59.75 | 47.50 | 37.55 | 26.82 | 50.39 | |||||||||||||
1972 | 29.77 | 37.76 | 46.87 | 48.12 | 60.48 | 71.85 | 77.15 | 75.76 | 63.90 | 53.53 | 39.40 | 22.68 | 52.27 | |||||||||||||
1973 | 19.56 | 32.32 | 41.77 | 47.60 | 61.60 | 70.15 | 76.61 | 76.55 | 61.53 | 54.10 | 40.45 | 33.34 | 51.30 | |||||||||||||
1974 | 26.73 | 31.36 | 45.24 | 48.02 | 58.79 | 73.35 | 79.18 | 74.18 | 66.52 | 54.65 | 43.38 | 31.71 | 52.76 | |||||||||||||
1975 | 27.40 | 35.54 | 41.08 | 44.23 | 54.31 | 64.73 | 78.82 | 73.39 | 65.33 | 53.37 | 37.25 | 32.84 | 50.69 | |||||||||||||
1976 | 27.89 | 34.05 | 38.10 | 49.28 | 62.16 | 67.55 | 78.68 | 72.21 | 66.42 | 51.00 | 41.80 | 29.40 | 51.54 | |||||||||||||
1977 | 26.81 | 35.79 | 37.66 | 54.10 | 55.03 | 73.22 | 77.31 | 75.00 | 66.43 | 55.61 | 42.47 | 37.94 | 53.11 | |||||||||||||
1978 | 36.31 | 39.77 | 47.97 | 50.23 | 55.95 | 69.13 | 77.97 | 73.94 | 63.97 | 55.53 | 41.00 | 26.77 | 53.21 | |||||||||||||
1979 | 22.02 | 32.50 | 43.19 | 51.03 | 60.18 | 70.03 | 78.89 | 75.55 | 71.43 | 56.71 | 36.53 | 32.84 | 52.58 | |||||||||||||
1980 | 33.63 | 35.95 | 41.45 | 52.65 | 56.94 | 67.45 | 77.60 | 74.13 | 66.25 | 52.58 | 41.30 | 33.60 | 52.79 | |||||||||||||
1981 | 32.03 | 38.25 | 44.08 | 53.37 | 57.61 | 69.57 | 78.18 | 77.92 | 68.50 | 50.45 | 44.32 | 36.39 | 54.22 | |||||||||||||
1982 | 29.74 | 32.34 | 43.24 | 46.48 | 56.71 | 68.02 | 75.42 | 78.37 | 64.00 | 48.81 | 38.10 | 29.92 | 50.93 | |||||||||||||
1983 | 35.15 | 39.41 | 44.61 | 45.82 | 55.81 | 67.65 | 76.55 | 77.84 | 67.80 | 55.95 | 43.02 | 31.85 | 53.45 | |||||||||||||
1984 | 23.81 | 25.78 | 40.11 | 48.45 | 61.61 | 67.27 | 78.48 | 77.18 | 66.45 | 49.45 | 42.65 | 29.84 | 50.92 | |||||||||||||
1985 | 24.15 | 25.55 | 40.79 | 55.72 | 63.84 | 72.45 | 80.63 | 76.47 | 62.70 | 53.10 | 37.40 | 27.68 | 51.71 | |||||||||||||
1986 | 28.97 | 41.34 | 47.71 | 48.77 | 57.16 | 73.48 | 74.15 | 77.85 | 60.17 | 51.27 | 40.85 | 29.73 | 52.62 | |||||||||||||
1987 | 26.50 | 36.09 | 42.73 | 55.87 | 62.66 | 71.60 | 75.61 | 74.65 | 66.45 | 56.35 | 40.75 | 30.50 | 53.31 | |||||||||||||
1988 | 24.95 | 34.72 | 41.39 | 52.00 | 59.53 | 75.68 | 80.90 | 76.50 | 63.73 | 59.95 | 41.03 | 28.06 | 53.21 | |||||||||||||
1989 | 22.29 | 25.25 | 45.79 | 54.72 | 59.90 | 69.22 | 81.08 | 75.11 | 66.40 | 53.32 | 40.43 | 31.34 | 52.07 | |||||||||||||
1990 | 33.40 | 32.82 | 45.00 | 54.90 | 57.82 | 72.00 | 78.89 | 76.13 | 71.95 | 53.98 | 41.40 | 20.98 | 53.27 | |||||||||||||
1991 | 24.35 | 36.50 | 42.77 | 47.90 | 55.53 | 68.30 | 79.05 | 78.40 | 64.32 | 53.61 | 39.97 | 29.98 | 51.72 | |||||||||||||
1992 | 25.55 | 39.22 | 49.24 | 57.08 | 65.52 | 70.37 | 75.35 | 77.23 | 66.50 | 56.00 | 34.05 | 27.08 | 53.60 | |||||||||||||
1993 | 24.89 | 29.50 | 45.42 | 48.47 | 63.37 | 63.73 | 69.85 | 72.52 | 65.43 | 52.60 | 34.77 | 31.50 | 50.17 | |||||||||||||
1994 | 36.81 | 35.25 | 45.65 | 52.03 | 62.97 | 74.32 | 80.71 | 80.77 | 70.43 | 51.27 | 32.58 | 31.53 | 54.53 | |||||||||||||
1995 | 34.90 | 42.32 | 44.06 | 48.57 | 55.53 | 64.27 | 75.95 | 78.03 | 67.53 | 51.47 | 46.08 | 37.06 | 53.82 | |||||||||||||
1996 | 32.97 | 30.78 | 45.29 | 50.58 | 59.92 | 73.35 | 80.52 | 77.77 | 64.72 | 53.87 | 43.38 | 37.10 | 54.19 | |||||||||||||
1997 | 32.23 | 35.23 | 45.98 | 48.27 | 63.39 | 70.12 | 75.02 | 78.68 | 67.75 | 52.82 | 42.15 | 27.85 | 53.29 | |||||||||||||
1998 | 37.87 | 37.48 | 40.44 | 48.10 | 58.60 | 62.55 | 79.69 | 77.60 | 68.08 | 50.95 | 42.83 | 29.52 | 52.81 | |||||||||||||
1999 | 35.81 | 37.34 | 44.76 | 45.48 | 55.95 | 68.42 | 78.23 | 77.23 | 63.50 | 54.52 | 45.65 | 31.00 | 53.16 | |||||||||||||
2000 | 35.06 | 39.81 | 42.00 | 54.45 | 61.73 | 72.05 | 80.77 | 78.92 | 64.57 | 52.34 | 31.40 | 30.71 | 53.65 | |||||||||||||
2001 | 27.31 | 34.39 | 45.39 | 50.08 | 63.58 | 70.92 | 79.35 | 79.03 | 70.22 | 55.00 | 42.63 | 26.27 | 53.68 | |||||||||||||
2002 | 26.00 | 27.86 | 38.89 | 51.57 | 59.92 | 71.83 | 81.87 | 75.45 | 66.02 | 49.73 | 37.60 | 35.52 | 51.85 | |||||||||||||
2003 | 38.31 | 34.55 | 44.53 | 50.37 | 61.27 | 71.15 | 83.53 | 80.02 | 65.83 | 57.85 | 37.27 | 33.53 | 54.85 | |||||||||||||
2004 | 22.40 | 26.88 | 47.74 | 52.38 | 60.32 | 70.22 | 78.98 | 74.21 | 65.30 | 53.85 | 38.97 | 32.71 | 52.00 | |||||||||||||
2005 | 34.44 | 34.93 | 42.73 | 50.48 | 59.29 | 66.72 | 80.81 | 77.00 | 65.45 | 54.44 | 41.43 | 31.50 | 53.27 | |||||||||||||
2006 | 34.35 | 33.46 | 41.63 | 53.25 | 63.11 | 73.20 | 83.05 | 76.47 | 63.43 | 50.55 | 40.98 | 30.73 | 53.68 | |||||||||||||
2007 | 21.11 | 36.82 | 46.27 | 52.53 | 62.97 | 73.22 | 83.95 | 80.63 | 66.72 | 51.90 | 41.87 | 26.95 | 53.75 | |||||||||||||
2008 | 23.85 | 33.24 | 40.39 | 46.23 | 57.40 | 69.90 | 81.39 | 77.77 | 66.52 | 53.08 | 42.92 | 30.02 | 51.89 | |||||||||||||
2009 | 30.65 | 36.16 | 42.03 | 48.83 | 61.47 | 66.38 | 78.97 | 75.52 | 70.58 | 49.35 | 40.97 | 23.60 | 52.04 | |||||||||||||
2010 | 28.98 | 36.59 | 42.74 | 48.88 | 53.21 | 68.47 | 79.05 | 76.13 | 68.75 | 56.66 | 38.25 | 33.55 | 52.61 | |||||||||||||
2011 | 27.60 | 34.14 | 43.35 | 45.38 | 53.13 | 66.18 | 78.47 | 79.00 | 69.55 | 54.76 | 39.32 | 29.37 | 51.69 | |||||||||||||
2012 | 33.18 | 37.26 | 48.97 | 54.05 | 61.47 | 73.55 | 82.18 | 81.69 | 70.03 | 55.29 | 45.50 | 34.77 | 56.50 | |||||||||||||
2013 | 19.42 | 28.62 | 44.60 | 49.38 | 62.58 | 75.32 | 84.11 | 82.69 | 70.37 | 52.42 | 44.42 | 24.58 | 53.21 | |||||||||||||
2014 | 30.40 | 42.12 | 49.02 | 51.93 | 61.68 | 69.50 | 81.31 | 74.29 | 69.95 | 57.27 | 41.30 | 37.26 | 55.50 | |||||||||||||
2015 | 34.26 | 43.89 | 49.71 | 52.33 | 59.94 | 77.47 | 77.39 | 77.63 | 70.83 | 60.53 | 39.75 | 31.34 | 56.26 | |||||||||||||
2016 | 30.39 | 37.07 | 47.15 | 55.15 | 61.66 | 77.45 | 83.10 | 80.18 | 67.27 | 58.27 | 47.02 | 29.52 | 56.18 | |||||||||||||
2017 | 27.15 | 39.98 | 50.15 | 50.28 | 62.48 | 75.95 | 85.26 | 81.29 | 66.93 | 52.45 | 47.78 | 32.98 | 56.06 | |||||||||||||
2018 | 39.02 | 38.62 | 46.50 | 54.77 | 64.50 | 74.57 | 83.10 | 77.68 | 70.83 | 53.16 | 39.07 | 31.74 | 56.13 | |||||||||||||
2019 | 30.90 | 34.73 | 42.79 | 52.52 | 57.97 | 70.35 | 82.02 | 80.34 | 67.92 | 46.48 | 41.83 | 33.90 | 53.48 | |||||||||||||
2020 | 35.73 | 34.97 | 46.47 | 53.32 | 64.71 | 70.12 | 81.08 | 83.05 | 69.35 | 56.03 | 42.47 | 29.95 | 55.60 | |||||||||||||
2021 | 32.98 | 36.39 | 44.71 | 51.32 | 62.74 | 80.15 | 85.71 | 76.76 | 70.28 | 53.16 | 44.95 | 34.77 | 56.16 | |||||||||||||
2022 | 31.94 | 33.23 | 46.27 | 50.77 | 59.35 | 74.68 | 87.32 | 82.15 | 75.10 | 57.98 | 37.17 | 32.98 | 55.75 | |||||||||||||
2023 | 33.50 | 32.48 | 39.42 | 50.33 | 67.23 | 71.38 | 85.26 | 78.85 | 70.75 | 55.87 | 43.57 | 36.52 | 55.43 | |||||||||||||
2024 | 34.77 | 40.86 | 44.69 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 40.11 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 28.63 | 34.18 | 42.40 | 50.15 | 59.38 | 69.07 | 78.44 | 76.20 | 65.87 | 53.20 | 39.93 | 30.73 | 52.36 | |||||||||||||
S.D. | 5.81 | 5.16 | 3.72 | 3.24 | 3.38 | 3.85 | 3.00 | 2.68 | 3.24 | 2.95 | 3.66 | 4.12 | 1.88 | |||||||||||||
SKEW | -0.47 | -0.79 | -0.20 | 0.07 | -0.03 | 0.28 | 0.51 | 0.21 | -0.07 | -0.11 | -0.25 | -0.62 | 0.26 | |||||||||||||
MAX | 39.48 | 43.89 | 50.15 | 57.08 | 67.23 | 80.15 | 87.32 | 83.05 | 75.10 | 60.53 | 47.78 | 37.94 | 56.50 | |||||||||||||
MIN | 11.55 | 16.27 | 31.98 | 44.12 | 52.23 | 60.22 | 69.85 | 69.34 | 57.48 | 46.48 | 31.40 | 18.03 | 48.17 | |||||||||||||
YRS | 96 | 96 | 96 | 95 | 96 | 96 | 96 | 96 | 96 | 96 | 96 | 96 | 95 |