YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1922 | ----- | z | 47.38 | o | 48.71 | 57.63 | 70.58 | ----- | z | ----- | z | ----- | z | ----- | z | 64.77 | 45.63 | 41.61 | 54.82 | f | ||||||
1923 | 45.06 | 41.57 | 43.23 | a | 55.27 | 69.19 | ----- | z | ----- | z | ----- | z | 69.93 | 57.77 | 47.90 | 35.00 | 51.66 | c | ||||||||
1924 | 34.84 | 45.52 | 42.52 | 55.77 | 63.06 | 85.83 | 76.39 | 81.39 | 71.81 | c | 58.03 | b | 51.93 | 34.58 | 58.47 | |||||||||||
1925 | 36.42 | 45.11 | 53.13 | 62.10 | a | 74.52 | 77.59 | a | 86.29 | 79.77 | 71.43 | 60.35 | 47.93 | 41.39 | 61.34 | |||||||||||
1926 | 37.87 | 46.68 | 51.33 | a | 57.15 | c | 67.57 | a | 81.63 | 83.10 | 85.03 | 75.43 | ----- | z | 50.30 | 37.67 | a | 61.25 | a | |||||||
1927 | 46.06 | 45.81 | a | 48.63 | a | 58.27 | 72.61 | 78.11 | b | 84.94 | 78.74 | 69.97 | 65.06 | 54.63 | 36.71 | 61.63 | ||||||||||
1928 | 44.45 | 44.24 | 53.47 | a | 58.83 | 72.03 | a | 81.73 | 84.06 | 83.32 | 77.97 | 64.35 | 48.00 | 40.23 | a | 62.73 | ||||||||||
1929 | 38.33 | a | 36.04 | 48.10 | 56.00 | a | 68.27 | a | 83.41 | a | 84.61 | 79.68 | 72.31 | a | 67.03 | 53.00 | 56.07 | a | 61.90 | |||||||
1930 | 35.35 | 51.39 | 52.16 | 68.50 | 65.19 | ----- | z | 82.81 | 82.81 | 74.27 | 62.58 | 45.73 | 31.29 | 59.28 | a | |||||||||||
1931 | 32.48 | 41.89 | 49.32 | 61.50 | 67.65 | 82.53 | 87.65 | 86.00 | 77.00 | 66.32 | 47.80 | 37.03 | 61.43 | |||||||||||||
1932 | 34.94 | 43.72 | 49.48 | 62.90 | 70.48 | 77.80 | 85.81 | 83.35 | 76.90 | a | 63.48 | 56.57 | 34.29 | 61.64 | ||||||||||||
1933 | 36.55 | 38.39 | 52.30 | a | 55.80 | 64.24 | b | 83.54 | d | 82.81 | 77.55 | 71.20 | 57.97 | a | 45.03 | a | 45.42 | 59.23 | ||||||||
1934 | 47.81 | 53.75 | 64.61 | 70.14 | b | 81.74 | 86.70 | c | 94.84 | 90.35 | 81.17 | 74.19 | 56.14 | b | 43.94 | 70.45 | ||||||||||
1935 | 43.26 | 49.00 | 50.81 | 60.80 | 66.23 | 88.97 | 92.29 | 89.16 | 82.17 | 67.00 | 52.53 | 44.97 | 65.60 | |||||||||||||
1936 | 42.94 | 43.79 | 56.23 | a | 68.43 | 79.16 | 90.07 | 92.35 | 86.00 | 73.20 | 65.23 | 54.00 | 42.19 | 66.13 | ||||||||||||
1937 | 31.90 | 41.82 | 49.74 | 63.17 | 76.74 | 84.57 | 87.87 | 90.71 | 81.87 | 70.26 | 59.47 | 44.65 | 65.23 | |||||||||||||
1938 | 42.27 | a | 43.18 | 47.76 | b | 62.60 | 70.55 | 82.76 | a | 88.19 | 88.74 | 78.27 | 64.52 | 45.72 | a | 44.81 | 63.28 | |||||||||
1939 | 39.55 | 36.36 | 51.74 | 65.13 | 74.77 | 85.63 | 92.06 | 89.00 | 76.40 | 65.55 | 59.30 | g | 50.94 | 66.10 | a | |||||||||||
1940 | 38.68 | 43.93 | 56.07 | a | 64.62 | a | 76.45 | 89.20 | 92.29 | 87.79 | b | 78.20 | 68.77 | 49.67 | 44.10 | 65.81 | ||||||||||
1941 | 42.32 | 47.93 | 52.45 | 51.90 | a | 71.16 | 77.73 | 87.23 | 84.87 | 72.55 | a | 59.10 | a | 52.23 | 42.52 | 61.83 | ||||||||||
1942 | 42.68 | 37.96 | 46.13 | 59.70 | 74.55 | 83.47 | 89.97 | 85.00 | 78.38 | a | 66.03 | a | 55.57 | 45.19 | 63.72 | |||||||||||
1943 | 43.45 | 50.59 | a | 51.81 | 68.87 | 71.13 | 80.73 | 89.26 | 84.87 | 80.33 | 66.58 | 55.27 | 41.39 | 65.36 | ||||||||||||
1944 | 39.90 | 44.17 | 47.58 | 55.00 | 69.74 | 80.60 | 89.03 | 87.68 | 80.41 | a | 68.45 | 48.63 | 43.32 | 62.88 | ||||||||||||
1945 | 42.45 | 45.36 | 47.68 | 57.83 | 73.13 | 79.33 | 88.19 | 87.84 | 80.70 | 68.45 | 56.47 | 39.10 | 63.88 | |||||||||||||
1946 | 42.16 | 48.11 | 53.81 | 67.23 | 69.03 | 87.03 | 88.97 | 84.84 | 80.70 | 61.94 | 48.73 | 48.58 | 65.09 | |||||||||||||
1947 | 39.81 | 49.32 | 53.23 | 61.60 | 75.26 | 80.10 | 90.77 | 82.48 | 80.23 | 67.45 | 44.37 | 40.77 | 63.78 | |||||||||||||
1948 | 43.47 | a | 42.34 | 43.81 | 63.77 | 72.97 | 79.42 | d | 89.48 | 86.13 | 80.73 | 66.45 | 46.20 | 40.45 | 62.94 | |||||||||||
1949 | 32.06 | m | 41.50 | 51.10 | 63.50 | 68.55 | 77.67 | 85.81 | 86.84 | 81.07 | 63.13 | 60.87 | 41.71 | 65.61 | a | |||||||||||
1950 | 40.77 | 47.71 | 53.71 | 64.73 | 70.06 | 83.63 | 84.77 | 87.06 | 74.93 | 75.97 | 56.90 | 49.77 | 65.84 | |||||||||||||
1951 | 42.26 | 45.50 | 51.29 | 59.67 | 71.71 | 82.50 | 91.97 | 84.97 | 81.83 | 65.00 | 48.90 | 38.16 | 63.65 | |||||||||||||
1952 | 39.16 | 42.07 | 43.39 | 62.93 | 72.10 | 82.23 | 86.23 | 85.65 | 79.93 | 73.74 | 45.87 | 39.71 | 62.75 | |||||||||||||
1953 | 46.13 | 44.54 | 52.26 | 57.67 | 66.00 | 85.10 | 87.48 | 83.61 | 82.73 | 66.29 | 53.73 | 40.13 | 63.81 | |||||||||||||
1954 | 44.94 | 53.86 | 48.97 | 68.97 | 74.19 | 82.87 | 86.68 | 84.06 | 77.90 | 67.84 | 57.30 | 42.10 | 65.81 | |||||||||||||
1955 | 36.77 | 37.36 | 51.06 | 59.67 | 68.45 | 79.13 | 84.67 | a | 83.65 | 80.80 | 70.39 | 50.53 | 44.06 | 62.21 | ||||||||||||
1956 | 46.26 | 40.86 | 54.52 | 60.93 | 75.16 | 86.10 | 86.68 | 83.52 | 83.93 | 67.94 | 48.40 | 43.39 | 64.81 | |||||||||||||
1957 | 37.87 | 49.56 | a | 49.52 | 55.87 | 62.77 | 80.03 | 83.06 | 80.52 | 77.90 | 60.16 | 43.47 | 43.81 | 60.38 | ||||||||||||
1958 | 42.06 | 47.11 | 43.81 | 58.03 | a | 75.26 | 84.83 | 86.55 | 86.81 | 77.70 | 67.00 | 52.30 | 50.77 | 64.35 | ||||||||||||
1959 | 45.06 | 42.07 | 52.32 | 62.67 | 71.87 | 85.17 | 90.03 | 83.03 | a | 77.33 | 64.42 | 51.80 | 44.03 | 64.15 | ||||||||||||
1960 | 36.03 | 36.93 | 52.77 | 63.17 | 70.00 | a | 84.17 | 89.32 | 88.45 | 81.40 | 62.06 | 53.63 | 38.74 | 63.06 | ||||||||||||
1961 | 43.81 | 46.29 | 50.32 | 60.17 | 72.90 | 86.43 | 88.19 | 84.42 | 71.93 | 64.35 | 47.67 | 37.71 | 62.85 | |||||||||||||
1962 | 38.87 | 44.07 | 46.19 | 66.00 | 70.71 | 81.60 | 87.03 | 88.32 | 78.07 | 67.32 | 54.30 | 45.32 | 63.98 | |||||||||||||
1963 | 33.87 | 47.82 | 52.26 | 61.17 | 76.74 | 84.07 | 89.43 | a | 83.10 | 80.57 | 71.32 | 53.57 | 42.57 | a | 64.71 | |||||||||||
1964 | 39.19 | 40.00 | 45.29 | 56.27 | 71.61 | 81.33 | 88.94 | 83.03 | 76.10 | 71.13 | 46.93 | 37.55 | 61.45 | |||||||||||||
1965 | 40.39 | 42.82 | 45.52 | 57.73 | 66.19 | 75.47 | 84.61 | 83.19 | 71.93 | 68.74 | 53.03 | 41.26 | 60.91 | |||||||||||||
1966 | 38.16 | 38.21 | 55.23 | 63.47 | 75.06 | 82.30 | 89.39 | 86.35 | 78.37 | 66.68 | 55.21 | a | 39.48 | 63.99 | ||||||||||||
1967 | 39.94 | 47.43 | 58.00 | 61.40 | 71.26 | 78.27 | 88.06 | 83.68 | 77.47 | 69.32 | 54.90 | 34.06 | 63.65 | |||||||||||||
1968 | 39.00 | 46.72 | 52.52 | 55.90 | 69.06 | 85.10 | 86.06 | 79.58 | 77.70 | 66.10 | 45.30 | 38.68 | 61.81 | |||||||||||||
1969 | 42.10 | 41.71 | 46.19 | 64.27 | 76.19 | 79.13 | 87.03 | 87.35 | 79.20 | 57.16 | 49.37 | 43.71 | 62.79 | |||||||||||||
1970 | 41.06 | 51.39 | 46.48 | 54.73 | 74.45 | 80.63 | 86.90 | 86.22 | d | 73.17 | 59.00 | 50.10 | 39.87 | 62.00 | ||||||||||||
1971 | 40.94 | 42.96 | 53.42 | 60.73 | d | 67.47 | a | 83.21 | a | 89.26 | d | 83.74 | 75.83 | a | 61.39 | 47.90 | 34.77 | 61.80 | ||||||||
1972 | 41.77 | 48.31 | 60.26 | 62.40 | 73.65 | 81.81 | d | 89.60 | a | 84.37 | a | 76.27 | 60.20 | a | 41.27 | 36.94 | 63.07 | |||||||||
1973 | 36.23 | 40.93 | 43.94 | 55.10 | 69.68 | 80.93 | 86.19 | 85.00 | 75.14 | a | 67.35 | 51.17 | 40.57 | a | 61.02 | |||||||||||
1974 | 34.55 | b | 42.04 | 56.52 | 60.17 | 76.23 | a | 86.80 | 84.84 | 83.07 | a | 76.10 | 62.84 | 47.87 | 36.71 | 62.31 | ||||||||||
1975 | 36.97 | 39.93 | 45.23 | 54.40 | 66.26 | 78.37 | 83.84 | 83.26 | 74.83 | a | 67.06 | 49.60 | 41.90 | a | 60.14 | |||||||||||
1976 | 40.39 | 48.00 | 51.00 | 60.45 | a | 71.87 | 83.07 | 87.97 | a | 82.74 | 74.53 | 63.41 | b | 53.63 | 44.68 | 63.48 | ||||||||||
1977 | 37.55 | 46.89 | 50.48 | 65.85 | d | 69.36 | f | 85.18 | b | 87.00 | a | 86.32 | 78.11 | c | 68.67 | d | 53.57 | g | 43.33 | a | 64.94 | b | ||||
1978 | 37.77 | 40.93 | 50.26 | 61.28 | a | 64.27 | a | 81.09 | g | 87.79 | b | 85.32 | 75.21 | a | 67.52 | b | 47.31 | a | 34.87 | 59.32 | a | |||||
1979 | 29.61 | 40.07 | 45.61 | 57.13 | 66.03 | b | 78.96 | c | 85.63 | a | 82.03 | a | 81.45 | a | 68.73 | a | 42.57 | 42.07 | b | 59.99 | ||||||
1980 | 36.93 | b | 43.30 | b | 44.14 | b | 56.50 | 63.81 | 83.00 | a | 89.03 | 83.32 | 77.00 | d | 63.76 | b | 52.63 | 49.58 | 61.92 | |||||||
1981 | 47.48 | 47.61 | 46.43 | a | 63.38 | a | 67.27 | a | 83.57 | b | 84.29 | 84.19 | d | 76.70 | 60.16 | 55.07 | a | 43.48 | 63.30 | |||||||
1982 | 37.10 | a | 40.15 | a | 47.39 | 56.90 | 66.42 | 79.10 | 84.71 | 80.87 | 71.33 | c | 59.64 | c | 45.97 | a | 38.44 | d | 59.00 | |||||||
1983 | 40.73 | a | 41.56 | c | 44.35 | 50.72 | a | 64.10 | b | 76.86 | i | 84.21 | c | 83.77 | a | 78.90 | 63.35 | 47.00 | 37.14 | b | 57.80 | a | ||||
1984 | 38.81 | 43.28 | 49.13 | a | 53.73 | 74.55 | 77.50 | 86.34 | b | 83.17 | g | 75.86 | a | 52.84 | 48.23 | 39.37 | a | 58.15 | a | |||||||
1985 | 37.97 | 39.68 | 47.48 | 61.00 | 69.42 | 82.23 | 85.10 | 84.52 | 69.47 | 61.29 | 44.80 | 43.58 | 60.54 | |||||||||||||
1986 | 47.45 | 45.04 | 53.87 | 57.23 | 67.45 | 79.03 | 79.39 | 83.97 | 68.13 | 58.23 | 46.60 | 42.13 | 60.71 | |||||||||||||
1987 | 39.32 | 42.71 | 45.61 | 62.13 | 67.37 | a | 81.47 | 84.10 | 79.03 | b | 74.73 | 66.32 | 47.53 | 37.77 | 60.68 | |||||||||||
1988 | 35.97 | 45.52 | 50.19 | 60.20 | 67.65 | 80.23 | 85.68 | 80.90 | 72.83 | 69.26 | 47.87 | 39.77 | 61.34 | |||||||||||||
1989 | 38.26 | 41.93 | 55.58 | 66.20 | 72.48 | 80.17 | 88.19 | 80.33 | a | 77.23 | 62.97 | 53.50 | 43.81 | 63.39 | ||||||||||||
1990 | 39.48 | 42.07 | 50.61 | 60.83 | 67.03 | 84.73 | 83.55 | 81.29 | 77.33 | 63.48 | 50.60 | 34.68 | 61.31 | |||||||||||||
1991 | 36.45 | 47.11 | 43.90 | 57.40 | 68.26 | 76.70 | 84.06 | 83.35 | 75.47 | 66.35 | 45.93 | 38.16 | 60.26 | |||||||||||||
1992 | 37.45 | 42.90 | 50.45 | 64.33 | 68.42 | 75.80 | 79.71 | 81.87 | 75.03 | 65.61 | 42.80 | 34.81 | 59.93 | |||||||||||||
1993 | 37.74 | 40.00 | 50.32 | 58.23 | 68.39 | 77.41 | a | 84.16 | 80.77 | 73.47 | 61.06 | 45.23 | 40.65 | 59.79 | ||||||||||||
1994 | 43.13 | 38.71 | 53.48 | 57.83 | 69.13 | 84.13 | 87.55 | 85.48 | 75.70 | 59.13 | 44.93 | 43.23 | a | 61.87 | ||||||||||||
1995 | 37.84 | 50.75 | 50.97 | 54.60 | 62.16 | 75.17 | 82.97 | 85.45 | 76.43 | 64.26 | 54.80 | 43.87 | 61.61 | |||||||||||||
1996 | 39.97 | 47.83 | 51.23 | 60.17 | 75.23 | 82.93 | 87.32 | 84.29 | 71.20 | 60.03 | 48.33 | 37.97 | 62.21 | |||||||||||||
1997 | 36.48 | 41.50 | 54.00 | 53.57 | 67.97 | 76.73 | 81.84 | 80.48 | 75.27 | 61.55 | 49.70 | 41.39 | 60.04 | |||||||||||||
1998 | 42.77 | 40.14 | 49.65 | 54.97 | 69.68 | 77.47 | 87.19 | 84.39 | 79.43 | 61.06 | 50.62 | a | 43.77 | 61.76 | ||||||||||||
1999 | 44.65 | 48.14 | 57.50 | a | 54.20 | 65.19 | 78.83 | 82.58 | 78.42 | 73.63 | 69.00 | 60.87 | 43.45 | 63.04 | ||||||||||||
2000 | 42.74 | 45.90 | 48.77 | 63.00 | 74.68 | 83.77 | 88.45 | 85.03 | a | 79.20 | 61.71 | 41.97 | 42.68 | 63.16 | ||||||||||||
2001 | 39.47 | a | 42.96 | 50.03 | 59.13 | 72.42 | 83.33 | 86.71 | 81.42 | 79.60 | 66.55 | 52.67 | 38.42 | 62.73 | ||||||||||||
2002 | 39.71 | 43.07 | 50.03 | 65.40 | 71.87 | 86.47 | 88.94 | 84.45 | 73.30 | 59.39 | 49.10 | 39.45 | 62.60 | |||||||||||||
2003 | 46.29 | 41.86 | 47.35 | 59.43 | 70.68 | 80.43 | 90.77 | 84.97 | 74.33 | 67.68 | 45.33 | 41.19 | 62.53 | |||||||||||||
2004 | 38.55 | 38.55 | 56.65 | 57.37 | 70.16 | 80.93 | 85.00 | 81.68 | 72.33 | 58.35 | 45.73 | 41.00 | 60.53 | |||||||||||||
2005 | 41.23 | 41.39 | 48.00 | 58.53 | 67.93 | c | 77.33 | 88.52 | 80.94 | 75.77 | 62.65 | 52.40 | 41.39 | 61.34 | ||||||||||||
2006 | 42.71 | 46.36 | 45.77 | 62.37 | 74.23 | 85.47 | 86.61 | 80.87 | 69.73 | 58.77 | 52.30 | 39.94 | 62.09 | |||||||||||||
2007 | 37.81 | 43.14 | 54.26 | 59.47 | 67.94 | 82.80 | 88.13 | 85.10 | 77.37 | 65.23 | 57.59 | a | 35.74 | 62.88 | ||||||||||||
2008 | 32.19 | 37.76 | 48.69 | b | 57.87 | 67.00 | 81.83 | a | 86.29 | 85.59 | d | 76.40 | 65.35 | 54.10 | 36.84 | 60.83 | ||||||||||
2009 | 41.00 | 44.21 | 53.74 | 56.67 | 71.90 | a | 76.20 | 88.29 | 84.94 | 76.33 | 59.97 | 53.70 | 33.10 | 61.67 | ||||||||||||
2010 | 36.93 | b | 35.64 | 45.65 | 58.73 | 66.35 | 81.77 | 86.52 | 80.61 | 78.97 | 64.81 | 47.20 | 43.00 | 60.51 | ||||||||||||
2011 | 37.32 | 38.04 | 52.65 | 59.00 | 63.48 | 81.93 | 87.39 | 86.13 | a | 75.93 | 61.58 | 47.63 | 39.61 | 60.89 | ||||||||||||
2012 | 43.68 | 40.97 | 53.52 | 64.07 | 74.90 | 86.97 | 86.23 | 87.16 | 77.93 | 66.13 | 55.50 | 39.03 | 64.67 | |||||||||||||
2013 | 34.23 | 36.29 | 51.84 | 58.77 | 69.61 | 85.33 | 87.26 | 82.48 | 74.67 | 59.19 | 49.20 | 38.16 | 60.59 | |||||||||||||
2014 | 44.16 | 46.21 | 51.87 | 58.83 | 69.00 | 83.23 | 88.06 | 80.00 | 76.53 | 65.06 | 50.83 | 41.06 | 62.91 | |||||||||||||
2015 | 43.10 | 49.07 | 55.81 | 60.20 | 64.42 | 80.70 | 81.87 | 83.71 | 78.80 | 66.48 | 48.40 | 36.84 | 62.45 | |||||||||||||
2016 | 35.90 | 45.66 | 54.32 | 59.63 | 67.55 | 86.37 | 87.23 | 80.00 | 74.70 | 68.35 | 54.27 | 40.13 | 62.84 | |||||||||||||
2017 | 35.61 | 46.46 | 56.71 | 58.53 | 66.73 | a | 85.63 | 86.65 | 83.26 | 76.87 | 66.74 | 58.73 | 48.10 | 64.17 | ||||||||||||
2018 | 45.81 | 44.82 | 52.77 | 64.70 | 75.10 | 85.41 | a | 89.65 | 86.68 | 80.40 | 60.10 | 49.50 | b | 39.13 | a | 64.51 | ||||||||||
2019 | 35.93 | b | 35.88 | b | 48.77 | 60.27 | 60.68 | 77.90 | 87.19 | 86.84 | 79.93 | 61.19 | 52.40 | 38.90 | 60.49 | |||||||||||
2020 | 39.45 | 42.69 | 51.42 | 62.07 | 75.84 | 84.83 | 88.06 | 90.65 | 78.40 | 71.69 | b | 54.48 | a | 40.87 | a | 65.04 | ||||||||||
2021 | 39.29 | 41.07 | 49.16 | 63.07 | 74.13 | 87.10 | 88.71 | 85.65 | 80.00 | 60.35 | 58.07 | 42.94 | 64.13 | |||||||||||||
2022 | 42.97 | 43.25 | 50.77 | 61.07 | 73.55 | 82.90 | 87.68 | 83.16 | 81.17 | 62.26 | 46.67 | 41.00 | b | 63.04 | ||||||||||||
2023 | 38.43 | j | 40.95 | f | 41.57 | j | 53.23 | d | 70.12 | f | 74.93 | o | 90.65 | k | 83.64 | c | 77.68 | b | 66.54 | e | 52.86 | h | 43.85 | d | 64.99 | g |
2024 | 41.07 | d | 44.31 | 49.55 | 57.19 | n | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 44.98 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 39.88 | 43.65 | 50.49 | 60.12 | 70.26 | 82.08 | 86.81 | 84.08 | 76.68 | 64.51 | 50.46 | 40.98 | 62.58 | |||||||||||||
S.D. | 3.76 | 4.02 | 4.02 | 4.00 | 4.08 | 3.36 | 2.92 | 2.80 | 3.38 | 4.14 | 4.41 | 4.10 | 1.91 | |||||||||||||
SKEW | -0.05 | 0.16 | 0.34 | 0.21 | 0.08 | -0.01 | -0.43 | 0.07 | -0.30 | 0.05 | 0.22 | 0.56 | 0.73 | |||||||||||||
MAX | 47.81 | 53.86 | 64.61 | 70.14 | 81.74 | 90.07 | 94.84 | 90.71 | 83.93 | 75.97 | 60.87 | 56.07 | 70.45 | |||||||||||||
MIN | 29.61 | 35.64 | 42.52 | 50.72 | 60.68 | 75.17 | 76.39 | 77.55 | 68.13 | 52.84 | 41.27 | 31.29 | 58.47 | |||||||||||||
YRS | 100 | 101 | 102 | 102 | 100 | 96 | 99 | 99 | 101 | 101 | 99 | 102 | 91 |