YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1935 | ----- | z | ----- | z | ----- | z | ----- | z | 70.94 | d | 83.85 | 86.05 | 86.24 | 81.15 | 66.21 | 52.88 | 49.35 | 72.09 | d | |||||||
1936 | 49.35 | 51.71 | 60.77 | 68.32 | 75.21 | 83.78 | 88.39 | 86.77 | 77.98 | 67.42 | 55.45 | 47.24 | 67.70 | |||||||||||||
1937 | 35.42 | 48.04 | 55.08 | a | 61.68 | 73.42 | 80.98 | 87.82 | 88.05 | 83.18 | 70.48 | 58.33 | 52.63 | 66.26 | ||||||||||||
1938 | 51.65 | 50.14 | 54.60 | 65.08 | 72.73 | 81.88 | 87.19 | 86.71 | 81.70 | 66.08 | 51.52 | 51.53 | 66.73 | |||||||||||||
1939 | 48.74 | 46.43 | 57.94 | 68.27 | 74.77 | 81.23 | 88.69 | 89.21 | 76.30 | 67.85 | 58.68 | 54.16 | 67.69 | |||||||||||||
1940 | 51.82 | 52.50 | 59.63 | 64.43 | 71.88 | a | 83.17 | a | 85.90 | 88.10 | 77.52 | 67.39 | 51.55 | 48.24 | 66.84 | |||||||||||
1941 | 48.73 | 54.71 | 56.76 | 59.87 | 74.08 | 79.74 | a | 89.29 | 83.23 | 74.15 | 63.84 | 56.78 | 49.23 | 65.87 | ||||||||||||
1942 | 49.35 | 48.61 | 54.88 | a | 64.15 | 70.18 | 79.77 | 90.66 | 86.73 | 78.40 | 69.92 | 60.95 | 52.00 | 67.13 | ||||||||||||
1943 | 50.22 | a | 53.73 | 59.84 | 66.40 | a | 74.98 | 77.35 | 86.92 | 86.08 | 82.17 | 68.39 | 55.65 | 48.97 | a | 67.56 | ||||||||||
1944 | 47.06 | 47.97 | 55.73 | a | 60.88 | 71.16 | 74.78 | 84.85 | 87.15 | 80.30 | 69.24 | 54.94 | c | 52.04 | g | 66.73 | a | |||||||||
1945 | 50.25 | e | 52.13 | b | 53.25 | a | 66.05 | b | 71.73 | 79.23 | 89.21 | 84.02 | 79.43 | 68.68 | a | 55.28 | 47.92 | 66.43 | ||||||||
1946 | 48.61 | 50.04 | 56.58 | 69.17 | 74.18 | 83.60 | 86.94 | 87.26 | 81.13 | 64.48 | 52.40 | a | 52.60 | 67.25 | ||||||||||||
1947 | 48.69 | 56.98 | 61.02 | 66.85 | 77.88 | a | 80.72 | 88.34 | 84.35 | a | 83.70 | 69.32 | 53.02 | 47.55 | 68.20 | |||||||||||
1948 | 51.00 | 50.72 | b | 52.63 | 65.43 | a | 68.38 | o | ----- | z | 86.90 | 87.19 | 81.68 | 69.11 | 53.83 | 44.27 | 64.28 | b | ||||||||
1949 | 35.50 | 46.38 | 55.45 | 68.50 | 72.13 | 82.40 | 88.59 | b | 86.03 | 83.27 | 66.76 | 62.35 | 47.66 | 66.25 | ||||||||||||
1950 | 45.03 | a | 54.45 | 60.48 | 69.93 | a | 73.18 | 81.05 | 88.73 | 87.24 | 79.35 | 72.85 | 62.05 | 56.45 | 69.23 | |||||||||||
1951 | 50.02 | g | 51.38 | 57.87 | 65.77 | 72.47 | 80.47 | 89.40 | 85.63 | 81.85 | 68.42 | g | 55.37 | 47.22 | a | 68.74 | b | |||||||||
1952 | 44.79 | 51.67 | 52.60 | 64.83 | 76.53 | 78.02 | 86.82 | 89.58 | a | 81.73 | 75.24 | 53.55 | 48.87 | a | 67.02 | |||||||||||
1953 | 54.47 | 52.46 | 58.35 | 65.42 | 67.23 | 79.93 | 91.19 | 86.69 | 82.00 | 69.56 | 59.73 | 51.85 | 68.24 | |||||||||||||
1954 | 49.37 | 60.04 | 55.25 | a | 72.10 | a | 77.54 | d | 82.22 | 90.70 | a | 85.19 | j | 81.95 | a | 71.69 | 62.22 | 50.78 | a | 68.53 | a | |||||
1955 | 46.35 | a | 49.18 | 59.23 | 62.88 | a | 71.74 | 82.47 | a | 86.81 | 87.19 | b | 81.84 | b | 72.15 | 58.63 | 53.00 | 67.62 | ||||||||
1956 | 54.08 | 50.64 | a | 60.73 | a | 65.84 | a | 74.35 | 84.68 | 88.24 | 85.28 | a | 84.62 | b | 67.76 | 56.00 | 49.09 | h | 70.20 | a | ||||||
1957 | 46.18 | 59.12 | 59.34 | 65.60 | a | 70.88 | a | 85.92 | 89.05 | 86.24 | 81.13 | 65.35 | 55.47 | 52.48 | 68.06 | |||||||||||
1958 | 51.87 | 56.46 | a | 53.37 | a | 65.15 | 78.31 | 82.62 | 87.10 | 89.67 | a | 82.08 | 71.95 | 56.78 | 53.35 | 69.06 | ||||||||||
1959 | 52.61 | 50.91 | a | 61.53 | 70.26 | a | 72.33 | a | 85.24 | a | 92.73 | a | 85.71 | 78.21 | a | 70.05 | b | 57.83 | 49.95 | 68.95 | ||||||
1960 | 44.19 | 50.24 | 61.77 | 67.37 | 73.79 | 86.95 | 89.47 | b | 87.40 | a | 81.86 | b | 67.90 | 55.03 | a | 48.00 | 67.83 | |||||||||
1961 | 50.24 | 54.71 | 59.03 | 67.68 | 72.55 | a | 86.48 | 91.00 | a | 87.28 | b | 77.00 | a | 67.08 | 53.70 | 47.13 | 67.82 | |||||||||
1962 | 50.56 | 52.68 | 52.32 | a | 71.14 | a | 70.78 | a | 82.05 | 87.65 | 88.97 | b | 82.13 | 69.84 | b | 60.02 | 51.03 | 68.26 | ||||||||
1963 | 46.02 | 59.86 | 57.02 | 60.93 | 74.92 | 78.55 | 87.56 | 86.40 | 81.53 | 71.05 | 56.80 | 49.50 | 67.51 | |||||||||||||
1964 | 44.92 | 49.91 | 54.87 | 62.52 | b | 70.97 | 79.92 | 88.77 | a | 87.47 | a | 78.60 | 73.98 | 52.07 | 50.89 | 66.24 | ||||||||||
1965 | 51.10 | 53.59 | a | 55.35 | 62.60 | 70.85 | a | 76.61 | b | 86.95 | 86.25 | a | 75.43 | a | 72.23 | 58.30 | b | 47.43 | a | 66.39 | ||||||
1966 | 45.72 | a | 48.43 | a | 59.13 | 68.18 | 75.92 | 82.23 | 87.12 | a | ----- | z | 79.84 | a | 67.71 | c | 57.62 | 49.79 | 65.61 | a | ||||||
1967 | 49.61 | 55.68 | 60.47 | 56.22 | 72.61 | 78.05 | 89.53 | 88.05 | 78.20 | 71.18 | 60.72 | 45.48 | 67.15 | |||||||||||||
1968 | 48.44 | ----- | z | 58.47 | 62.60 | 71.39 | h | 81.45 | a | 85.98 | 82.79 | 80.08 | ----- | z | 58.13 | 44.45 | 66.93 | c | ||||||||
1969 | 54.25 | a | 50.27 | 56.84 | 65.40 | 75.92 | 79.55 | 88.13 | 90.92 | 82.95 | 65.65 | 56.93 | 50.79 | 68.13 | ||||||||||||
1970 | 49.66 | 55.57 | 57.00 | 59.10 | 73.06 | 80.88 | b | 88.81 | 88.12 | a | 75.73 | 65.02 | 56.03 | 47.09 | d | 66.34 | ||||||||||
1971 | 48.27 | 53.23 | 58.10 | 63.85 | 69.23 | a | 81.13 | 89.53 | 88.10 | 79.67 | 64.12 | a | 53.92 | 45.42 | 66.21 | |||||||||||
1972 | 48.06 | 55.22 | 65.50 | 65.75 | 73.28 | b | 82.23 | 90.68 | 85.56 | 77.82 | 63.19 | 52.38 | 46.22 | b | 67.16 | |||||||||||
1973 | 44.66 | 51.98 | 53.57 | a | 63.23 | 76.63 | 84.73 | 89.42 | 85.95 | 79.05 | 68.84 | 55.85 | 51.05 | a | 67.08 | |||||||||||
1974 | 48.19 | 53.43 | 61.21 | 64.83 | a | 75.53 | 86.63 | 87.82 | 86.10 | 83.63 | 70.21 | 56.72 | a | 48.32 | 68.55 | |||||||||||
1975 | 49.77 | 51.00 | 55.55 | 58.31 | a | 72.45 | 82.17 | a | 88.39 | 85.40 | 81.88 | 67.45 | 55.93 | 50.67 | a | 66.58 | ||||||||||
1976 | 51.18 | a | 54.81 | 56.39 | 62.62 | 76.10 | 81.52 | a | 88.32 | 82.98 | 77.38 | 67.87 | a | 59.03 | 48.61 | 67.23 | ||||||||||
1977 | 48.53 | 56.14 | 54.15 | 67.75 | b | 67.35 | 84.60 | 88.74 | 86.40 | 79.03 | 71.32 | 60.18 | 54.66 | 68.24 | ||||||||||||
1978 | 49.56 | 53.66 | 60.42 | 63.64 | a | 74.58 | 84.52 | 88.52 | 86.47 | 78.90 | 74.11 | 55.42 | 45.42 | 67.93 | ||||||||||||
1979 | 44.81 | 50.45 | 57.24 | 65.40 | 73.89 | 83.52 | 87.29 | 83.13 | 83.40 | a | 70.89 | 54.62 | 51.60 | 67.18 | ||||||||||||
1980 | 53.47 | 56.95 | 56.56 | 65.38 | a | 69.74 | 81.28 | 89.71 | 86.44 | 80.22 | 70.29 | 58.18 | 55.65 | 68.66 | ||||||||||||
1981 | 53.68 | 55.30 | 58.05 | 69.68 | 74.74 | 87.73 | 88.79 | 90.27 | 82.62 | 67.65 | 58.72 | 52.50 | 69.98 | |||||||||||||
1982 | 48.22 | a | 55.19 | a | 56.65 | 65.22 | 74.07 | a | 80.02 | a | 85.66 | 86.88 | a | 79.05 | 66.27 | 52.89 | b | 47.48 | 66.47 | |||||||
1983 | 52.02 | a | 53.50 | a | 57.90 | 60.20 | 72.67 | a | 80.73 | 86.10 | 82.74 | 81.34 | a | 68.27 | 56.52 | 51.63 | 66.97 | |||||||||
1984 | 51.94 | 52.26 | 60.77 | 64.67 | 78.97 | a | 81.92 | 87.37 | 86.57 | a | 82.57 | a | 65.39 | 54.78 | 47.74 | 67.91 | ||||||||||
1985 | 48.32 | a | 50.93 | a | 56.77 | a | 69.90 | a | 75.71 | b | 85.02 | 89.17 | b | 86.02 | 74.47 | 69.00 | c | 54.36 | a | 50.63 | a | 67.52 | ||||
1986 | 54.80 | a | 56.30 | a | 62.53 | 65.67 | 75.15 | 85.03 | 84.60 | 88.06 | 73.72 | 65.69 | d | 57.38 | a | 49.09 | b | 68.17 | ||||||||
1987 | 48.19 | d | 51.89 | a | 56.68 | c | 70.59 | a | 73.72 | a | 84.53 | 84.53 | a | 86.10 | 80.46 | d | 71.97 | b | 54.36 | a | 44.02 | h | 69.36 | a | ||
1988 | 48.41 | c | 55.21 | a | 59.03 | b | 64.40 | f | 74.28 | d | 83.11 | g | 90.18 | a | 86.66 | b | 79.83 | 74.84 | 56.96 | g | 48.61 | c | 68.56 | c | ||
1989 | 47.07 | a | 52.07 | 64.50 | d | 72.90 | 74.90 | 82.82 | 90.61 | 84.92 | 79.80 | 67.70 | f | 58.22 | a | 50.52 | a | 68.94 | a | |||||||
1990 | 48.63 | a | 52.04 | d | 60.84 | 68.88 | b | 72.60 | 84.10 | a | 89.65 | a | 85.26 | 81.22 | 69.48 | d | 56.90 | 44.12 | e | 67.81 | ||||||
1991 | 48.82 | c | 58.41 | 53.88 | a | 65.36 | a | 71.90 | b | 80.42 | e | 87.55 | b | 86.40 | f | 80.52 | 71.90 | b | 57.97 | 48.72 | b | 65.95 | a | |||
1992 | 48.48 | 55.05 | a | 57.87 | a | 69.05 | a | 77.06 | 83.89 | h | 87.23 | a | 87.97 | a | 82.72 | a | 71.47 | a | 54.21 | b | ----- | z | 69.11 | b | ||
1993 | 48.78 | a | 51.77 | 61.89 | 68.31 | a | 77.05 | 81.79 | a | 85.95 | 87.10 | a | 80.48 | a | 70.48 | 55.04 | c | 48.61 | 68.10 | |||||||
1994 | 52.13 | 50.73 | b | 63.14 | f | 68.83 | 74.18 | 87.65 | 91.27 | 89.45 | 82.32 | 67.74 | 49.67 | 48.39 | c | 69.31 | a | |||||||||
1995 | 49.60 | 59.13 | a | 58.88 | a | 64.78 | 69.92 | 81.00 | 88.81 | 90.37 | 84.12 | 70.55 | 62.09 | g | 57.63 | p | 71.72 | b | ||||||||
1996 | 52.42 | f | 57.41 | 60.71 | c | 68.29 | b | 77.02 | 84.62 | 91.60 | b | 89.03 | a | 79.53 | a | 67.22 | b | 57.15 | d | 50.60 | a | 71.20 | a | |||
1997 | 51.02 | 53.06 | b | ----- | z | 66.45 | b | 81.79 | 82.70 | 86.95 | a | 89.53 | 82.45 | 67.93 | b | 57.75 | 48.31 | 69.81 | a | |||||||
1998 | 50.92 | 51.07 | a | 58.18 | a | 61.27 | b | 68.76 | 78.45 | 89.90 | a | 90.56 | 79.92 | 67.10 | 57.32 | 50.29 | 66.98 | |||||||||
1999 | ----- | z | 54.23 | 59.52 | 61.12 | 73.87 | 81.70 | 86.38 | a | 86.39 | 81.52 | a | 71.60 | 59.43 | 51.73 | 69.77 | a | |||||||||
2000 | 54.65 | 55.14 | a | 59.97 | 70.90 | 79.92 | 86.30 | 89.40 | 88.37 | 80.73 | 67.69 | 52.93 | a | 52.97 | 69.91 | |||||||||||
2001 | 48.66 | 51.48 | 62.24 | 64.83 | 82.63 | a | 85.97 | 87.58 | 89.85 | 83.65 | 73.00 | 59.92 | 47.92 | 69.81 | ||||||||||||
2002 | 49.55 | a | 54.85 | a | 57.63 | a | 68.92 | 75.06 | 85.95 | a | 91.85 | 87.19 | 82.73 | b | 67.61 | 58.83 | 48.08 | 69.02 | ||||||||
2003 | 55.56 | 52.73 | 59.87 | a | 62.76 | a | 75.80 | a | 84.33 | 91.69 | 86.97 | 82.55 | 74.45 | 51.60 | 47.02 | 68.78 | ||||||||||
2004 | 48.05 | a | 48.27 | a | 64.16 | 65.65 | 73.94 | 81.63 | 86.92 | 83.52 | 76.47 | a | 64.13 | a | 49.41 | a | 49.92 | 66.01 | ||||||||
2005 | 51.84 | c | 53.05 | 60.22 | a | 64.45 | b | 76.44 | 81.90 | 91.80 | d | 86.83 | d | 78.54 | b | 69.35 | d | 61.83 | f | 52.81 | b | 69.75 | a | |||
2006 | 52.30 | a | 57.37 | e | 53.38 | f | 65.11 | b | 79.68 | a | 86.52 | e | 92.97 | 87.24 | b | 80.48 | 69.53 | b | 61.15 | 50.85 | a | 71.20 | a | |||
2007 | 49.65 | d | 55.98 | a | 64.63 | 69.13 | 77.13 | 84.67 | 91.33 | a | 89.92 | 80.23 | 69.58 | f | 62.22 | a | 47.28 | a | 70.20 | a | ||||||
2008 | 48.87 | 55.02 | f | 61.45 | j | 66.24 | g | 72.38 | g | 87.04 | e | 90.04 | f | 89.34 | 83.13 | 71.87 | 64.28 | 49.11 | 70.52 | e | ||||||
2009 | 54.79 | 52.25 | 61.31 | o | 64.50 | 80.84 | 80.12 | 92.42 | a | 87.97 | 84.35 | 67.42 | 60.18 | 48.44 | 70.30 | a | ||||||||||
2010 | 51.45 | a | 54.66 | 58.40 | a | 62.87 | 70.65 | 82.97 | 90.80 | a | 87.55 | 82.82 | 69.98 | b | 57.91 | a | 53.65 | 68.64 | ||||||||
2011 | 53.10 | 51.62 | 60.69 | 66.38 | 70.79 | 81.38 | 87.84 | 89.82 | 83.30 | 71.60 | 55.98 | 49.11 | 68.47 | |||||||||||||
2012 | 54.71 | 55.14 | 60.52 | 68.30 | 78.65 | 84.42 | 87.92 | 89.74 | ----- | z | ----- | z | 61.72 | 51.92 | 69.30 | b | ||||||||||
2013 | 49.52 | 54.27 | 66.69 | 71.42 | 77.58 | 88.03 | 92.98 | 88.97 | 81.67 | 67.10 | 59.42 | 52.85 | 70.87 | |||||||||||||
2014 | 58.60 | 61.64 | 65.31 | 70.38 | 77.89 | 86.48 | 92.45 | 87.32 | 85.17 | 74.92 | 61.80 | 54.26 | 73.02 | |||||||||||||
2015 | 55.85 | 62.73 | 66.97 | 68.17 | 73.32 | 88.30 | 87.19 | 91.55 | 85.18 | 75.89 | 57.12 | 49.32 | 71.80 | |||||||||||||
2016 | 51.73 | 60.67 | 66.47 | 69.20 | 74.55 | 89.67 | 91.97 | 91.32 | 80.20 | 74.00 | 61.95 | 52.81 | 72.04 | |||||||||||||
2017 | 50.27 | 58.50 | 66.52 | a | 70.00 | 77.03 | 88.43 | 93.74 | 90.50 | 81.95 | 73.48 | 64.67 | 55.79 | 72.57 | ||||||||||||
2018 | 57.13 | 56.45 | 61.68 | 73.22 | 77.36 | c | 86.82 | 93.53 | 91.61 | 85.36 | a | 69.61 | 59.47 | 52.18 | l | 73.84 | a | |||||||||
2019 | 53.19 | d | 48.93 | 59.18 | 70.37 | 70.03 | 84.97 | 90.16 | 90.50 | 80.95 | 67.68 | 60.00 | 50.15 | 68.84 | ||||||||||||
2020 | 53.16 | 57.07 | 57.40 | 67.02 | 78.48 | 84.75 | 90.94 | 93.29 | 85.58 | 76.08 | 59.43 | 51.53 | 71.23 | |||||||||||||
2021 | 52.40 | 56.70 | 58.13 | 71.87 | 77.87 | 90.63 | 93.81 | 91.18 | 85.08 | 67.66 | 65.37 | 51.74 | 71.87 | |||||||||||||
2022 | 53.21 | 55.12 | 63.34 | 71.52 | a | 77.05 | 87.27 | 92.21 | 91.87 | a | 84.95 | 71.76 | 54.63 | 50.92 | 71.15 | |||||||||||
2023 | 50.42 | 50.93 | 56.39 | 68.42 | 75.27 | 80.62 | 95.10 | 89.38 | a | 81.70 | 72.37 | 59.30 | 54.94 | 69.57 | ||||||||||||
2024 | 52.85 | 55.53 | 58.71 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 55.70 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 49.94 | 53.57 | 58.85 | 66.21 | 74.38 | 83.02 | 89.03 | 87.51 | 80.87 | 69.45 | 57.10 | 49.99 | 68.22 | |||||||||||||
S.D. | 3.73 | 3.41 | 3.46 | 3.51 | 3.14 | 3.10 | 2.30 | 2.25 | 2.62 | 2.99 | 3.37 | 2.73 | 1.71 | |||||||||||||
SKEW | -1.10 | 0.30 | 0.38 | -0.30 | 0.16 | 0.05 | 0.38 | 0.08 | -0.57 | 0.18 | 0.09 | 0.11 | 1.06 | |||||||||||||
MAX | 58.60 | 62.73 | 66.97 | 73.22 | 82.63 | 90.63 | 95.10 | 93.29 | 85.58 | 76.08 | 65.37 | 56.45 | 73.02 | |||||||||||||
MIN | 35.42 | 46.38 | 52.32 | 56.22 | 67.23 | 74.78 | 84.53 | 82.74 | 73.72 | 63.19 | 49.41 | 44.12 | 65.87 | |||||||||||||
YRS | 86 | 87 | 84 | 86 | 86 | 86 | 88 | 86 | 88 | 84 | 86 | 83 | 64 |