YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1930 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 81.67 | 83.77 | 81.68 | 73.47 | 61.06 | 48.21 | b | 38.45 | 66.90 | e | ||||||
1931 | 38.94 | 42.11 | 47.61 | 60.37 | 66.90 | 80.80 | 88.16 | 83.84 | 74.70 | 62.81 | 42.57 | 32.53 | a | 60.11 | ||||||||||||
1932 | 28.65 | 41.38 | 46.87 | 59.43 | 67.61 | 77.47 | 84.58 | 82.10 | 76.59 | a | 61.35 | 52.83 | 31.74 | 59.22 | ||||||||||||
1933 | 32.13 | 30.79 | 50.84 | 55.48 | a | 62.55 | 83.00 | 87.19 | 83.65 | 77.17 | 65.65 | 52.63 | 43.48 | 60.38 | ||||||||||||
1934 | 43.42 | 48.00 | 58.61 | 65.17 | 76.52 | 79.20 | 87.55 | 83.42 | 74.80 | 67.42 | 49.07 | 38.06 | 64.27 | |||||||||||||
1935 | 39.61 | 41.41 | a | 42.93 | a | 57.47 | 61.03 | 72.21 | a | 73.93 | c | 70.00 | 65.21 | a | 51.37 | d | 38.27 | 31.45 | 53.74 | |||||||
1936 | 28.03 | a | 32.86 | 42.90 | b | 54.28 | a | 62.00 | b | 82.28 | a | 87.90 | 79.81 | 63.21 | a | 54.67 | a | 39.38 | a | 33.21 | c | 55.04 | ||||
1937 | 18.28 | b | 34.85 | b | 47.83 | a | 61.10 | 75.48 | 81.77 | 86.55 | k | 88.19 | 79.37 | 66.13 | 53.47 | 44.29 | 59.16 | a | ||||||||
1938 | 40.32 | 41.22 | a | 46.70 | a | 59.07 | 67.42 | 80.57 | 86.35 | 86.68 | 74.97 | 64.90 | 43.72 | a | 41.19 | 61.09 | ||||||||||
1939 | 37.63 | a | 31.22 | a | 47.77 | 63.47 | 72.06 | 80.63 | 88.10 | 86.39 | 74.53 | 63.00 | 56.03 | 49.84 | 62.56 | |||||||||||
1940 | 37.06 | 41.72 | 52.19 | 60.73 | 74.13 | 84.03 | 89.03 | 85.39 | 73.20 | 63.81 | 44.17 | 38.52 | 62.00 | |||||||||||||
1941 | 38.97 | 45.11 | 48.48 | 51.07 | a | 67.97 | 74.50 | 84.77 | 81.52 | 70.43 | 57.65 | 51.00 | 39.94 | 59.28 | ||||||||||||
1942 | 38.81 | 35.00 | 42.48 | 57.34 | a | 66.71 | 80.40 | 87.06 | 84.10 | 76.50 | 63.17 | b | 53.33 | 45.29 | 60.85 | |||||||||||
1943 | 40.06 | 44.36 | 48.39 | 65.77 | 68.68 | 78.87 | 87.52 | 81.94 | 77.97 | 64.61 | 53.30 | 38.94 | 62.53 | |||||||||||||
1944 | 36.35 | 40.31 | 42.90 | a | 51.03 | 67.58 | 76.40 | 86.23 | ----- | z | 77.63 | 67.35 | 46.93 | 40.61 | 57.58 | a | ||||||||||
1945 | 39.00 | a | 42.93 | 45.93 | a | 55.47 | 70.55 | 76.27 | 86.65 | 84.94 | 77.87 | 64.03 | 49.87 | 36.23 | 60.81 | |||||||||||
1946 | 37.81 | 44.36 | 53.61 | 67.87 | 69.48 | 84.97 | 89.19 | 84.42 | 78.43 | 60.42 | 45.20 | 45.42 | 63.43 | |||||||||||||
1947 | 35.29 | 45.36 | 51.23 | 59.00 | 72.84 | 75.20 | 88.13 | 81.00 | 78.63 | 66.23 | 42.83 | 36.65 | 61.03 | |||||||||||||
1948 | 38.84 | 39.59 | 41.39 | 62.57 | 73.19 | 77.27 | 86.77 | 83.52 | 79.53 | 63.94 | 43.90 | 37.87 | a | 60.70 | ||||||||||||
1949 | 29.07 | b | 35.25 | 46.58 | 61.10 | 64.71 | g | 76.46 | b | 84.87 | 84.00 | 79.77 | 61.42 | 60.23 | 38.45 | 59.75 | a | |||||||||
1950 | 35.23 | 43.93 | 49.32 | 63.10 | 69.77 | 82.37 | 84.23 | 84.19 | 73.50 | 72.45 | 55.13 | 47.74 | 63.41 | |||||||||||||
1951 | 38.48 | 43.32 | 48.77 | 58.93 | 69.16 | 78.47 | 90.45 | 82.81 | 77.53 | 61.81 | 44.67 | 32.61 | 60.58 | |||||||||||||
1952 | 35.52 | 36.90 | 38.94 | 60.13 | 70.61 | 80.63 | 86.19 | 85.32 | 78.43 | 71.16 | 43.53 | 35.61 | 60.25 | |||||||||||||
1953 | 40.81 | 40.50 | 51.39 | 57.63 | 64.84 | 83.37 | 87.32 | 81.81 | 80.72 | a | 67.07 | a | 50.57 | 35.68 | 61.81 | |||||||||||
1954 | 41.48 | 50.25 | 46.55 | 66.17 | 72.74 | 81.83 | 88.19 | 83.87 | 76.60 | 65.94 | 52.60 | 36.74 | 63.58 | |||||||||||||
1955 | 32.71 | 31.89 | 46.58 | 57.24 | a | 67.35 | 77.93 | 86.26 | 85.03 | 78.87 | 68.43 | a | 48.27 | 39.13 | 59.97 | |||||||||||
1956 | 42.68 | 36.36 | a | 51.52 | 60.47 | 73.06 | 85.52 | a | 85.30 | a | 81.23 | a | 81.77 | 64.97 | 45.23 | 39.29 | 62.28 | |||||||||
1957 | 35.38 | b | 44.18 | 48.55 | 56.00 | a | 62.74 | 78.17 | 83.74 | 82.06 | 76.13 | 61.26 | 42.33 | 42.35 | 59.41 | |||||||||||
1958 | 39.74 | 45.36 | 42.16 | 56.50 | 73.90 | 84.07 | 86.39 | 87.83 | a | 76.55 | a | 65.66 | b | 51.73 | 48.29 | 63.18 | ||||||||||
1959 | 41.37 | a | 39.89 | a | 50.71 | 61.93 | 70.33 | a | 84.63 | 89.48 | 84.19 | 78.21 | a | 62.90 | 51.70 | 42.19 | 63.13 | |||||||||
1960 | 33.13 | 33.18 | a | 49.23 | 61.93 | a | 70.39 | 83.48 | g | 89.23 | a | 88.77 | a | 79.30 | 60.68 | 50.53 | 36.03 | 59.31 | a | |||||||
1961 | 36.68 | 43.54 | 47.39 | 60.40 | 72.23 | 85.60 | 88.16 | 83.00 | b | 68.83 | 62.45 | 44.80 | 34.00 | 60.59 | ||||||||||||
1962 | 36.00 | b | 42.26 | a | 44.00 | 65.52 | a | 69.06 | 81.34 | a | 86.27 | a | 86.39 | 77.47 | 65.19 | 52.03 | 43.73 | a | 62.44 | |||||||
1963 | 30.03 | 46.71 | 48.71 | 58.70 | 74.71 | 80.75 | b | 88.83 | a | 82.03 | 79.20 | 69.13 | 51.80 | 41.00 | 62.63 | |||||||||||
1964 | 37.45 | 38.83 | 42.45 | 55.43 | 70.13 | 80.70 | 88.65 | 82.42 | 75.63 | 69.93 | a | 44.43 | 34.90 | 60.08 | ||||||||||||
1965 | 38.65 | 38.79 | 44.84 | 55.77 | 64.35 | 74.77 | 84.90 | 82.48 | 71.59 | a | 67.19 | 52.43 | 39.27 | a | 59.59 | |||||||||||
1966 | 37.81 | 36.04 | a | 54.57 | a | 61.07 | 74.00 | a | 80.76 | a | 88.13 | 85.87 | 78.00 | 65.14 | b | 52.93 | a | 39.33 | a | 62.80 | ||||||
1967 | 36.13 | a | 44.93 | 53.40 | a | 57.00 | 66.60 | a | 76.00 | 86.70 | a | 83.71 | 77.23 | 68.77 | a | 53.38 | a | 32.55 | 61.37 | |||||||
1968 | 32.90 | 42.86 | 50.94 | 53.48 | a | 66.61 | 84.17 | a | 85.23 | a | 77.23 | a | 76.00 | 64.39 | 47.28 | a | 34.71 | 59.65 | ||||||||
1969 | 37.81 | 38.32 | 43.60 | a | 62.18 | b | 73.87 | 78.50 | 86.13 | 86.68 | 77.73 | 55.33 | a | 48.30 | 41.61 | 60.84 | ||||||||||
1970 | 40.20 | a | 49.74 | a | 44.13 | 52.50 | 72.35 | 78.37 | 87.77 | 85.45 | 71.53 | 56.45 | b | 49.28 | a | 37.77 | 60.46 | |||||||||
1971 | 43.73 | a | 41.11 | 50.23 | 59.34 | a | 65.93 | a | 81.23 | 88.07 | a | 84.68 | 72.83 | 59.58 | 45.31 | a | 32.93 | a | 60.41 | |||||||
1972 | 38.43 | a | 47.18 | a | 58.74 | 61.53 | 71.29 | 80.93 | 87.55 | 83.39 | 75.40 | 58.06 | 40.37 | 32.58 | 61.29 | |||||||||||
1973 | 30.61 | 38.93 | 42.90 | 52.97 | 68.00 | 78.30 | 83.81 | 83.41 | b | 73.17 | 64.63 | a | 48.40 | 36.48 | 58.47 | |||||||||||
1974 | 31.29 | 35.36 | 53.13 | 56.53 | 75.00 | 85.63 | 84.32 | 83.29 | 77.45 | a | 64.10 | 47.77 | 35.61 | 60.79 | ||||||||||||
1975 | 35.57 | a | 38.14 | 43.71 | 51.80 | 64.23 | 77.30 | 83.68 | 81.97 | 75.27 | 67.97 | b | 48.47 | 38.63 | a | 58.89 | ||||||||||
1976 | 34.65 | 46.11 | b | 49.06 | 58.86 | b | 70.20 | a | 80.70 | 86.94 | 81.94 | 75.59 | a | 61.80 | a | 53.27 | 43.13 | 61.85 | ||||||||
1977 | 34.23 | 45.71 | 49.03 | 63.79 | a | 67.45 | b | 84.53 | 85.52 | 83.34 | b | 77.11 | b | 66.52 | 50.77 | 42.81 | 62.57 | |||||||||
1978 | 35.94 | 39.25 | 51.32 | 58.62 | a | 65.52 | 83.10 | a | 87.32 | 84.58 | 75.69 | a | 68.55 | 48.21 | a | 31.87 | 60.83 | |||||||||
1979 | 29.45 | 38.14 | 45.16 | 59.60 | 67.10 | a | 78.97 | 87.13 | a | 82.58 | 82.07 | 68.23 | 41.63 | 40.03 | 60.01 | |||||||||||
1980 | 35.35 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 92.50 | o | 84.87 | a | 76.90 | 63.90 | 52.00 | 48.68 | 60.28 | f | |||||
1981 | 48.16 | 47.54 | 48.29 | 65.40 | 68.65 | 86.17 | 87.42 | 84.71 | 77.63 | 60.06 | 54.43 | 42.23 | 64.22 | |||||||||||||
1982 | 35.94 | 39.41 | a | 49.00 | 59.60 | 68.50 | a | 80.27 | 86.58 | 83.28 | b | 76.03 | 60.70 | a | 45.14 | a | 35.73 | a | 60.01 | |||||||
1983 | 38.83 | a | 40.32 | 45.29 | 51.72 | a | 65.90 | b | 77.37 | 85.47 | a | 85.32 | 79.70 | 65.71 | 47.53 | 35.52 | 59.89 | |||||||||
1984 | 34.90 | 39.61 | a | 48.45 | 57.57 | 76.83 | a | 79.34 | a | 87.94 | 84.74 | 78.13 | 55.62 | b | 49.90 | a | 38.97 | a | 61.00 | |||||||
1985 | 36.90 | 38.00 | 49.83 | a | 63.57 | 70.26 | 84.67 | 87.43 | a | 85.97 | 70.70 | 63.45 | b | 45.75 | b | 40.94 | 61.46 | |||||||||
1986 | 47.03 | a | 45.79 | 57.67 | a | 57.23 | 70.65 | 82.90 | a | 84.10 | 86.94 | 72.32 | b | 61.97 | 49.63 | 42.71 | 63.24 | |||||||||
1987 | 37.40 | a | 41.04 | 47.19 | 65.72 | a | 69.16 | 84.38 | a | 86.70 | a | 82.45 | 77.73 | 68.97 | 48.50 | 37.65 | 62.24 | |||||||||
1988 | 34.97 | b | 42.76 | 51.87 | 61.67 | 72.13 | 84.40 | 89.81 | 86.29 | 76.66 | a | 71.71 | 46.10 | a | 40.97 | a | 63.28 | |||||||||
1989 | 31.32 | 37.15 | b | 55.71 | 66.20 | 73.16 | 80.17 | 87.74 | 80.06 | 77.11 | b | 62.13 | a | 52.03 | 42.27 | a | 62.09 | |||||||||
1990 | 35.61 | 39.79 | 50.58 | 61.13 | 67.90 | 84.97 | 84.45 | 81.23 | 76.73 | 61.42 | 48.10 | 30.30 | a | 60.18 | ||||||||||||
1991 | 28.97 | 40.93 | 44.47 | a | 56.23 | 68.52 | 76.86 | a | 84.52 | 82.06 | 74.10 | 64.74 | 44.45 | a | 36.72 | b | 58.55 | |||||||||
1992 | 33.29 | 41.37 | b | 51.57 | c | 66.21 | a | 69.00 | b | 78.53 | 81.13 | a | 83.00 | d | 74.75 | b | 66.36 | f | 41.29 | b | 32.77 | a | 59.36 | a | ||
1993 | 35.17 | a | 37.33 | a | 51.14 | b | 60.37 | c | 69.38 | b | 78.57 | b | 84.62 | b | 80.89 | c | 75.60 | 60.24 | f | 44.43 | b | 39.21 | b | 59.70 | a | |
1994 | 42.40 | a | 38.59 | a | 56.28 | b | 58.96 | d | 71.22 | d | 86.07 | a | 88.79 | c | 87.00 | a | 76.56 | u | ----- | z | ----- | z | ----- | z | 66.16 | d |
1995 | 39.68 | 51.14 | f | 51.69 | b | 57.04 | c | 62.42 | 74.93 | a | 84.45 | 86.03 | 77.40 | 64.73 | a | 54.57 | 44.77 | a | 63.43 | a | ||||||
1996 | 40.06 | 49.07 | 53.32 | 62.57 | 75.32 | 83.43 | 88.74 | 85.30 | a | 72.17 | 60.03 | 46.57 | 37.26 | 62.82 | ||||||||||||
1997 | 33.73 | a | 38.11 | 53.50 | a | 55.07 | 73.67 | g | 78.80 | 84.30 | a | 81.06 | 75.64 | b | 63.19 | 49.20 | 36.65 | 59.02 | a | |||||||
1998 | 38.16 | 38.00 | 50.13 | 55.87 | 69.23 | 78.13 | 86.93 | b | 85.68 | 78.30 | 62.29 | 48.48 | a | 43.30 | a | 61.21 | ||||||||||
1999 | 43.58 | 47.21 | 58.13 | 54.97 | 67.00 | 79.13 | 84.71 | 79.42 | 74.63 | 68.87 | a | 58.07 | 40.97 | 63.06 | ||||||||||||
2000 | 39.48 | 45.59 | 49.13 | a | 65.87 | 76.90 | a | 83.33 | 88.16 | 85.81 | 78.07 | 60.97 | 40.80 | 40.48 | 62.88 | |||||||||||
2001 | 37.03 | 40.36 | 51.06 | 60.33 | 74.32 | 84.13 | 86.74 | 83.23 | 80.10 | 65.97 | 51.07 | 34.13 | 62.37 | |||||||||||||
2002 | 34.68 | 40.39 | 49.97 | a | 66.90 | 73.97 | 87.17 | 90.90 | 85.81 | 74.53 | 59.23 | 49.53 | 39.45 | 62.71 | ||||||||||||
2003 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2004 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2005 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2006 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2007 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2008 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2009 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2010 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2011 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2012 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2013 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2014 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 76.00 | s | 65.10 | a | 50.83 | 39.97 | 51.97 | i | ||
2015 | 40.85 | e | 48.79 | 55.77 | 59.43 | b | 63.48 | 81.40 | 81.16 | 81.81 | 76.96 | f | 65.30 | a | 47.70 | 34.40 | a | 60.01 | a | |||||||
2016 | 33.42 | 42.72 | 54.06 | 58.60 | 66.39 | 86.63 | 87.55 | 80.74 | 75.63 | 67.16 | 52.97 | a | 37.55 | 61.95 | ||||||||||||
2017 | 34.03 | 45.50 | 57.48 | 58.83 | 68.48 | 86.67 | 88.71 | 84.61 | 76.97 | 65.00 | a | 57.83 | 48.26 | 64.37 | ||||||||||||
2018 | 44.74 | 44.07 | 51.84 | 64.32 | b | 74.19 | 86.67 | 90.65 | 87.77 | 80.53 | 58.52 | 48.11 | b | 36.90 | 64.03 | |||||||||||
2019 | 33.42 | 32.68 | 47.45 | 60.70 | 60.16 | 78.73 | 88.29 | 88.29 | 79.67 | 60.03 | 51.97 | 37.39 | 59.90 | |||||||||||||
2020 | 34.06 | 40.34 | 51.26 | 60.77 | 75.10 | 83.97 | 87.84 | 90.84 | 78.20 | 68.45 | 52.23 | 38.84 | 63.49 | |||||||||||||
2021 | 36.65 | 37.75 | 47.81 | 62.53 | 72.13 | 87.23 | 88.68 | 85.48 | 78.83 | 58.48 | 55.57 | 41.23 | 62.70 | |||||||||||||
2022 | 40.97 | 41.54 | 50.13 | 60.30 | 71.97 | 83.63 | 88.00 | 84.16 | 81.20 | 62.94 | 44.43 | 37.84 | 62.26 | |||||||||||||
2023 | 31.16 | 34.07 | 39.13 | 56.50 | 71.10 | 77.80 | 91.74 | 86.29 | 77.53 | 67.29 | 51.63 | 42.29 | 60.54 | |||||||||||||
2024 | 38.97 | 44.31 | 49.19 | e | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 44.16 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 36.63 | 40.95 | 49.07 | 59.56 | 69.61 | 80.99 | 86.67 | 83.82 | 76.29 | 63.76 | 48.84 | 38.87 | 61.30 | |||||||||||||
S.D. | 4.61 | 4.52 | 4.43 | 4.01 | 3.91 | 3.49 | 2.51 | 2.82 | 3.28 | 4.05 | 4.53 | 4.36 | 1.91 | |||||||||||||
SKEW | -0.57 | -0.14 | 0.05 | -0.06 | -0.25 | -0.11 | -1.73 | -1.30 | -1.38 | -0.43 | -0.07 | 0.34 | -1.22 | |||||||||||||
MAX | 48.16 | 50.25 | 58.74 | 67.87 | 76.90 | 87.23 | 91.74 | 90.84 | 82.07 | 72.45 | 60.23 | 49.84 | 64.37 | |||||||||||||
MIN | 18.28 | 30.79 | 38.94 | 51.03 | 60.16 | 72.21 | 73.93 | 70.00 | 63.21 | 51.37 | 38.27 | 30.30 | 53.74 | |||||||||||||
YRS | 82 | 80 | 81 | 80 | 78 | 80 | 80 | 81 | 80 | 80 | 82 | 82 | 70 |