YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1941 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1942 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1943 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1944 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1945 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 65.26 | 44.52 | a | 39.76 | b | 49.84 | i | |
1946 | 40.47 | a | 42.07 | 46.52 | 59.37 | 66.68 | 67.67 | 80.31 | b | 81.19 | 70.73 | 52.81 | 43.37 | 43.77 | 57.91 | |||||||||||
1947 | 39.77 | 48.29 | 54.27 | a | 59.63 | 72.10 | 67.53 | 78.97 | 77.93 | a | 75.00 | 60.84 | 45.43 | 42.00 | 60.15 | |||||||||||
1948 | 41.93 | a | 40.17 | 44.45 | 51.00 | 59.52 | 71.37 | 75.66 | b | 77.00 | a | 69.00 | a | 60.17 | b | 45.52 | a | 32.94 | 55.73 | |||||||
1949 | 28.19 | 38.93 | a | 46.00 | 63.50 | 68.84 | 74.83 | 80.87 | 79.97 | b | 73.97 | 59.07 | a | 57.57 | 38.90 | 59.22 | ||||||||||
1950 | 28.50 | a | 43.61 | 46.00 | b | 54.04 | c | 64.68 | 70.83 | 84.39 | 86.68 | 73.14 | a | 58.39 | 49.59 | c | 47.55 | 58.95 | ||||||||
1951 | 36.77 | 42.07 | 45.84 | 60.46 | b | 63.93 | a | 73.96 | b | 84.16 | 79.62 | b | 76.04 | c | 55.69 | b | 47.36 | e | 36.38 | e | 58.52 | |||||
1952 | 36.97 | 45.50 | g | 45.39 | 63.31 | a | 64.24 | b | 68.62 | a | 84.54 | c | 80.29 | 77.14 | a | 69.52 | 45.31 | a | 39.17 | a | 61.32 | a | ||||
1953 | 47.13 | 44.43 | 49.69 | b | 53.07 | 57.47 | a | 63.32 | b | 81.47 | a | 76.55 | b | 76.68 | b | 62.19 | 52.20 | 44.80 | a | 59.08 | ||||||
1954 | 38.87 | a | 50.82 | 45.81 | 57.80 | 68.00 | 67.53 | 81.06 | 70.94 | 68.77 | 59.65 | 54.50 | 41.81 | 58.80 | ||||||||||||
1955 | 38.90 | 41.11 | 43.90 | 46.77 | 59.74 | 72.97 | 76.35 | 83.13 | a | 71.90 | a | 61.03 | 43.86 | a | 38.97 | 56.55 | ||||||||||
1956 | 39.68 | 37.79 | a | 47.30 | a | 60.85 | c | 65.97 | b | 68.67 | 82.32 | 78.13 | 74.10 | 56.87 | 49.31 | a | 47.32 | 59.03 | ||||||||
1957 | 30.23 | 43.68 | 47.10 | 56.40 | 64.39 | 73.76 | a | 77.71 | 75.87 | 75.30 | 53.35 | 46.30 | 45.87 | 57.50 | ||||||||||||
1958 | 42.68 | 48.89 | 45.77 | 54.50 | 72.61 | 71.77 | 83.55 | 84.90 | 69.80 | 65.71 | 50.27 | 48.93 | a | 61.62 | ||||||||||||
1959 | 42.77 | a | 40.96 | 51.77 | 58.53 | 60.73 | a | 72.00 | 82.97 | 77.71 | 66.37 | 62.74 | 53.31 | a | 43.61 | 59.46 | ||||||||||
1960 | 36.61 | 40.52 | 50.90 | 56.23 | 60.19 | 76.23 | 88.17 | a | 80.39 | 77.93 | 64.13 | 47.97 | 44.58 | 60.32 | ||||||||||||
1961 | 46.23 | a | 50.93 | 50.19 | 57.23 | 62.23 | a | 81.07 | 85.97 | 86.97 | 69.59 | a | 62.06 | 48.90 | 40.39 | c | 61.81 | |||||||||
1962 | 41.27 | a | 44.75 | 46.35 | 64.25 | b | 56.68 | 69.70 | 78.60 | a | 73.97 | a | 74.07 | 60.34 | b | 52.37 | c | 47.72 | f | 60.21 | a | |||||
1963 | 41.00 | d | 52.48 | e | 50.85 | d | 51.23 | d | 64.57 | c | 71.19 | d | 77.76 | f | 81.70 | a | 79.52 | c | 62.39 | 48.53 | 44.26 | 58.88 | a | |||
1964 | 40.23 | a | 47.21 | a | 47.89 | d | 54.17 | a | 62.29 | c | ----- | z | 80.93 | b | 77.37 | d | 71.48 | a | 64.63 | a | 44.32 | b | 37.60 | f | 59.05 | b |
1965 | 40.18 | c | 47.56 | a | ----- | z | 57.11 | b | 63.58 | 72.43 | 81.48 | b | 78.17 | b | 68.04 | b | 68.93 | b | 49.83 | a | 40.48 | 60.71 | a | |||
1966 | 41.23 | a | 43.00 | 52.20 | a | 59.88 | d | 67.77 | 70.34 | a | 78.33 | j | 79.21 | b | 73.56 | c | 65.67 | a | 50.04 | d | 41.97 | a | 58.62 | a | ||
1967 | 42.59 | b | 49.52 | a | 45.63 | a | 48.26 | c | 64.94 | 74.97 | 85.66 | b | 89.47 | a | 79.33 | 63.35 | 48.63 | 39.16 | 60.96 | |||||||
1968 | 41.74 | 45.66 | 54.55 | 54.93 | 64.03 | a | 73.57 | b | 85.48 | 75.63 | a | 73.43 | b | 59.90 | a | 46.66 | a | 39.19 | e | 59.56 | ||||||
1969 | 33.16 | 38.36 | 49.42 | 56.62 | a | 68.28 | b | 73.43 | 81.04 | c | 80.93 | b | 72.70 | c | 56.42 | 52.83 | 43.10 | a | 58.86 | |||||||
1970 | 41.32 | 46.38 | b | 48.41 | d | 49.30 | 65.42 | 78.46 | b | 84.58 | 85.10 | b | 67.50 | 59.03 | a | 46.45 | a | 38.55 | 59.21 | |||||||
1971 | 42.84 | 44.59 | a | 45.57 | a | 54.90 | a | 62.97 | a | 68.37 | 84.97 | 86.39 | 67.97 | a | 57.10 | a | 48.62 | a | 37.17 | a | 58.45 | |||||
1972 | 40.48 | 45.72 | 53.32 | 53.79 | a | 66.19 | 74.10 | 82.90 | b | 83.17 | a | 70.50 | 59.68 | 47.57 | b | 36.43 | c | 59.49 | ||||||||
1973 | 37.80 | a | 44.93 | a | 49.10 | a | 57.50 | 68.61 | 74.81 | d | 86.14 | b | 81.73 | a | 71.92 | d | 60.46 | c | 43.28 | a | 42.94 | 59.93 | ||||
1974 | 35.32 | 44.65 | b | 47.97 | b | 53.26 | c | 59.67 | a | 80.36 | e | 78.52 | b | 81.68 | 79.20 | 65.19 | 50.21 | b | 43.16 | 59.93 | ||||||
1975 | 41.27 | a | 40.82 | 43.89 | c | 48.53 | 62.61 | c | 68.68 | e | 83.10 | b | 75.66 | b | 76.48 | a | 58.28 | b | 47.39 | b | 43.97 | b | 57.56 | |||
1976 | 45.47 | a | 43.59 | 47.03 | 53.45 | a | 65.54 | c | 68.00 | c | 82.46 | c | 73.76 | b | 75.69 | a | 65.67 | g | 52.50 | d | 47.20 | a | 59.52 | a | ||
1977 | 41.22 | d | 48.43 | 48.88 | g | 64.50 | b | 57.96 | d | 77.56 | c | 80.64 | c | 85.89 | c | 66.08 | e | 60.61 | c | 46.79 | b | 42.60 | a | 61.12 | a | |
1978 | ----- | z | ----- | z | ----- | z | 53.15 | d | 60.97 | b | 74.07 | b | 81.59 | d | 77.22 | d | 65.96 | e | 66.30 | d | ----- | z | ----- | z | 68.47 | e |
1979 | 28.00 | c | 43.00 | e | 51.93 | a | 53.08 | e | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 63.03 | a | 41.85 | c | 47.62 | b | 46.93 | e |
1980 | 36.97 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 61.76 | f | 48.80 | 49.10 | 44.95 | i | |||
1981 | 40.03 | b | 45.22 | a | 50.31 | b | 54.74 | g | 60.74 | l | 62.97 | a | 74.77 | e | ----- | z | 67.35 | g | ----- | z | ----- | z | ----- | z | 54.66 | g |
1982 | 33.09 | i | 39.92 | d | 47.89 | d | 50.95 | i | 58.93 | a | 68.28 | e | 74.43 | a | 79.29 | g | 64.50 | j | 50.90 | k | 39.64 | h | 35.36 | f | 57.89 | g |
1983 | 42.37 | d | 40.00 | i | 44.89 | l | 47.46 | d | 60.92 | e | 67.61 | g | 77.38 | e | 84.43 | h | 68.92 | r | 54.15 | r | 44.18 | h | 30.62 | e | 51.75 | g |
1984 | 43.23 | i | 47.55 | i | 51.69 | e | 52.00 | c | 62.82 | c | 67.89 | b | 85.33 | g | 83.18 | c | 70.42 | f | 55.80 | a | 45.00 | d | 37.55 | k | 59.77 | e |
1985 | 35.95 | j | 43.52 | g | 47.92 | f | ----- | z | 67.09 | h | 75.92 | e | 90.08 | e | 89.31 | e | 66.67 | c | 60.85 | d | 35.35 | d | 34.88 | f | 69.69 | f |
1986 | 47.32 | l | 45.12 | b | 56.24 | f | 55.89 | b | 65.19 | e | 81.69 | d | 76.58 | g | 91.11 | d | 68.16 | e | 64.41 | d | 49.45 | a | 40.52 | b | 62.39 | c |
1987 | ----- | z | 47.04 | d | 48.83 | g | 67.42 | f | 71.77 | e | 81.14 | b | 77.54 | e | 81.56 | f | 78.92 | e | 72.65 | e | 49.33 | f | 39.93 | d | 67.00 | e |
1988 | 38.19 | 52.19 | b | 54.11 | c | 58.65 | d | 64.67 | d | 72.43 | b | 84.74 | d | 84.32 | c | 76.27 | d | 74.96 | e | 46.07 | b | 41.79 | c | 62.37 | ||
1989 | 42.55 | b | 33.76 | c | 49.82 | c | 62.80 | 63.00 | d | 76.00 | a | 80.97 | b | 78.54 | c | 74.30 | c | 63.76 | b | 53.54 | b | 50.17 | b | 60.77 | ||
1990 | 42.81 | d | 45.20 | c | 55.83 | g | ----- | z | 63.90 | b | 74.71 | b | 86.66 | b | 81.03 | b | 79.96 | c | 64.17 | b | 53.19 | i | 35.82 | c | 63.81 | c |
1991 | 42.54 | c | ----- | z | ----- | z | ----- | z | 58.55 | i | 67.83 | 84.35 | e | 87.88 | e | 81.40 | e | 66.48 | d | 50.00 | c | 41.72 | f | 68.64 | e | |
1992 | 48.26 | d | 50.16 | d | 51.83 | g | 60.31 | d | ----- | z | 80.56 | c | ----- | z | 85.64 | f | 74.36 | s | 67.41 | d | 48.85 | c | 38.54 | g | 59.26 | f |
1993 | 30.00 | c | 38.05 | g | 50.57 | c | 56.21 | a | 72.68 | i | 72.50 | h | 72.71 | g | 80.29 | n | 78.74 | k | 67.50 | e | 47.88 | e | 45.27 | e | 49.57 | f |
1994 | 51.03 | 44.96 | e | 57.70 | d | 61.31 | a | 65.88 | e | 74.69 | d | 90.29 | g | 84.34 | b | 80.35 | d | 58.89 | c | 41.68 | b | 41.89 | c | 60.25 | a | |
1995 | 40.52 | 53.64 | c | 49.00 | c | 55.28 | a | 69.38 | g | 71.15 | c | 80.54 | c | 79.00 | c | 76.38 | a | 59.79 | c | 52.35 | d | 39.69 | b | 59.76 | a | |
1996 | 40.87 | 43.03 | 50.81 | 58.83 | a | 59.55 | b | ----- | z | 86.26 | 85.83 | b | 72.32 | e | 60.32 | 50.60 | 42.23 | 59.15 | a | |||||||
1997 | 41.19 | 42.82 | 51.82 | c | 55.54 | d | 70.46 | c | 70.11 | c | 80.89 | c | 83.70 | d | 73.38 | a | 58.63 | a | 48.83 | a | 41.68 | 59.92 | ||||
1998 | 44.17 | b | 44.29 | 50.86 | b | 55.57 | 58.33 | a | 71.71 | b | 84.68 | 83.97 | a | 77.17 | 60.03 | b | 46.90 | a | 40.10 | b | 59.81 | |||||
1999 | 45.19 | 42.89 | a | 47.74 | 55.29 | b | 62.11 | c | 70.86 | b | 83.89 | c | 82.08 | e | 74.82 | b | 66.63 | d | 55.14 | a | 41.87 | 60.71 | ||||
2000 | 37.60 | a | 43.15 | c | 49.86 | b | 63.78 | c | 65.57 | c | 76.43 | b | 82.59 | b | 82.21 | c | 72.83 | 59.03 | a | 41.62 | a | 40.64 | c | 59.61 | ||
2001 | 41.04 | c | 42.11 | 52.55 | b | 54.59 | c | 72.10 | b | 67.72 | a | 80.52 | 84.34 | b | 78.00 | 63.16 | 51.45 | a | 38.23 | a | 60.48 | |||||
2002 | 41.27 | a | 45.95 | g | 48.06 | 59.46 | b | 64.36 | c | 78.12 | d | 86.89 | c | 79.89 | c | 70.40 | o | 58.77 | 52.66 | a | 41.38 | b | 61.09 | b | ||
2003 | 46.07 | b | 44.75 | 52.63 | a | 53.79 | a | 63.56 | f | 78.60 | e | 88.43 | a | 83.77 | a | 78.79 | b | 65.76 | b | 42.73 | 40.83 | a | 61.47 | a | ||
2004 | 39.67 | a | 43.68 | a | 58.00 | b | 61.57 | b | 62.86 | c | 72.80 | e | 85.86 | c | 84.11 | c | 70.50 | b | 61.41 | d | 47.93 | 44.55 | 61.08 | |||
2005 | 42.65 | 46.36 | c | 54.16 | 55.81 | c | 64.40 | a | 69.07 | 85.62 | b | 84.71 | 71.52 | a | 62.42 | 43.87 | 38.00 | 59.88 | ||||||||
2006 | 42.93 | a | 42.68 | 45.61 | 56.87 | 67.76 | b | 74.69 | a | 88.32 | c | 81.33 | d | 75.32 | e | 62.00 | a | 48.17 | a | 44.23 | a | 60.83 | ||||
2007 | 38.83 | a | 45.89 | 55.62 | b | 58.31 | a | 69.31 | b | 74.75 | b | 87.20 | a | 81.56 | d | 73.45 | a | 59.54 | e | 50.07 | b | 38.97 | b | 61.12 | ||
2008 | 37.50 | g | 46.34 | 46.17 | b | 49.38 | a | 65.00 | c | 72.69 | a | 85.44 | d | 82.00 | e | 76.34 | a | 62.23 | a | 53.21 | a | 38.33 | a | 61.56 | a | |
2009 | 43.29 | c | 44.48 | a | 45.00 | a | 56.97 | 67.52 | 72.38 | a | 87.61 | c | 85.36 | c | 76.31 | a | 53.62 | g | 48.86 | a | 37.75 | c | 60.50 | a | ||
2010 | 44.45 | b | 45.89 | a | 51.90 | a | 54.62 | d | 59.03 | 67.90 | 83.20 | a | 80.42 | 72.60 | 61.84 | 46.00 | a | 39.52 | 58.95 | |||||||
2011 | 44.83 | a | 42.32 | 47.77 | a | 51.90 | 58.78 | d | 69.59 | c | 78.45 | b | 84.16 | 82.07 | 61.45 | 47.41 | a | 45.23 | 59.50 | |||||||
2012 | 44.29 | 43.10 | 47.90 | 55.70 | 64.40 | a | 65.93 | 80.52 | 83.81 | 76.14 | b | 59.48 | 47.90 | 38.35 | 58.96 | |||||||||||
2013 | 40.55 | 44.32 | 50.81 | 54.73 | 65.13 | 71.13 | 83.90 | 79.93 | b | 70.10 | 58.42 | 46.33 | 39.97 | 58.78 | ||||||||||||
2014 | 45.58 | 37.54 | 52.39 | 57.67 | 67.45 | 71.17 | 84.58 | 79.03 | 72.60 | 63.87 | 42.70 | 40.71 | 59.61 | |||||||||||||
2015 | 46.13 | 48.96 | 58.19 | 57.13 | 66.32 | 80.70 | 82.61 | 81.97 | 71.73 | 65.35 | 42.63 | 38.19 | 61.66 | |||||||||||||
2016 | 39.32 | 50.45 | 47.94 | 61.70 | 64.29 | 71.83 | 77.93 | b | 80.84 | 72.27 | 58.13 | 54.00 | 34.45 | 59.43 | ||||||||||||
2017 | 33.00 | 42.71 | 51.83 | a | 53.41 | a | 66.90 | a | 74.21 | a | 85.75 | c | 86.52 | 73.70 | 57.90 | 48.53 | 39.32 | 59.48 | ||||||||
2018 | 44.32 | 43.43 | 49.26 | 55.60 | 68.55 | 72.77 | 86.16 | 82.87 | 71.93 | a | 59.93 | a | 50.13 | 40.43 | a | 60.45 | ||||||||||
2019 | 42.61 | 36.14 | 47.22 | d | 58.87 | 68.87 | a | 76.90 | 81.03 | 85.10 | 70.00 | 57.91 | i | 52.53 | 43.29 | 60.23 | a | |||||||||
2020 | 43.58 | 47.45 | 50.23 | 59.83 | 67.39 | 72.33 | 84.65 | 84.65 | 80.03 | 66.77 | 49.27 | 43.94 | 62.51 | |||||||||||||
2021 | 45.26 | 42.64 | 52.32 | 61.67 | 68.35 | 82.80 | 90.87 | 84.77 | 76.27 | 60.00 | 52.93 | 41.52 | 63.28 | |||||||||||||
2022 | 46.97 | 49.46 | 53.32 | 51.70 | 60.45 | 72.50 | 89.84 | 91.03 | 78.83 | 69.74 | 43.00 | 38.29 | 62.10 | |||||||||||||
2023 | 43.35 | 45.21 | 44.45 | 56.47 | 70.65 | 77.40 | 88.39 | 84.90 | 72.03 | 62.42 | 49.73 | 46.94 | 61.83 | |||||||||||||
2024 | 40.03 | 44.93 | 50.94 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 45.30 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 40.77 | 44.56 | 49.58 | 56.30 | 64.58 | 72.84 | 83.04 | 81.97 | 73.80 | 61.98 | 48.18 | 41.40 | 59.83 | |||||||||||||
S.D. | 4.59 | 3.84 | 3.45 | 4.12 | 3.84 | 4.33 | 3.73 | 4.07 | 4.00 | 4.12 | 3.87 | 3.77 | 1.51 | |||||||||||||
SKEW | -0.95 | -0.06 | 0.46 | -0.10 | 0.02 | 0.24 | -0.22 | -0.15 | -0.04 | 0.56 | -0.34 | -0.01 | -0.14 | |||||||||||||
MAX | 51.03 | 53.64 | 58.19 | 64.50 | 72.61 | 82.80 | 90.87 | 91.11 | 82.07 | 74.96 | 57.57 | 50.17 | 63.28 | |||||||||||||
MIN | 28.00 | 33.76 | 43.89 | 46.77 | 56.68 | 62.97 | 74.43 | 70.94 | 65.96 | 52.81 | 35.35 | 30.62 | 55.73 | |||||||||||||
YRS | 72 | 70 | 68 | 71 | 69 | 72 | 69 | 70 | 69 | 72 | 73 | 70 | 48 |