YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1939 | ----- | z | ----- | z | 53.16 | 64.82 | b | 71.68 | 82.03 | 86.77 | 84.03 | a | 72.54 | d | 63.97 | 55.04 | c | 50.83 | b | 68.49 | b | |||||
1940 | 37.93 | d | 43.61 | k | 55.20 | f | 61.63 | c | 76.17 | a | 86.84 | e | 91.15 | e | 86.14 | b | 76.11 | k | 64.93 | c | 46.44 | c | 42.42 | e | 65.96 | c |
1941 | 38.52 | 44.18 | q | ----- | z | 51.36 | e | 71.56 | f | 77.10 | a | 85.72 | f | 82.08 | e | 72.55 | j | 56.87 | p | 52.04 | e | 41.96 | e | 57.18 | f | |
1942 | 40.23 | a | 36.80 | h | ----- | z | 58.95 | h | 70.07 | d | 82.58 | f | 89.22 | d | 85.38 | g | 79.32 | k | 64.95 | j | 54.53 | 44.75 | c | 59.76 | g | |
1943 | 41.15 | d | 48.24 | c | 51.93 | d | 66.38 | a | 72.34 | b | 79.43 | b | 87.59 | b | 83.79 | b | 79.69 | d | 65.17 | b | 53.19 | d | ----- | z | 66.26 | a |
1944 | 38.57 | a | 40.11 | a | 46.22 | d | 54.54 | b | 69.33 | d | 79.40 | e | 86.47 | a | 86.84 | 77.82 | b | 66.00 | b | ----- | z | ----- | z | 64.53 | b | |
1945 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 78.14 | b | 85.34 | b | 83.55 | 78.20 | 64.48 | 58.00 | y | 38.29 | c | 71.33 | f | |||
1946 | 37.00 | n | ----- | z | ----- | z | 65.50 | 71.23 | 85.96 | f | 86.55 | 82.90 | 79.04 | c | 64.33 | g | 49.22 | u | 46.03 | a | 71.87 | f | ||||
1947 | 40.59 | n | 49.00 | h | 57.04 | g | 63.76 | m | 75.08 | e | 81.56 | e | 89.16 | f | 81.62 | e | 81.32 | e | 64.96 | h | 42.33 | o | 38.04 | c | 71.52 | g |
1948 | 42.96 | d | 39.59 | b | 42.39 | h | 61.64 | e | 72.33 | j | 81.67 | c | 88.74 | 85.52 | 80.03 | 63.75 | k | 44.61 | l | ----- | z | 68.59 | e | |||
1949 | ----- | z | ----- | z | ----- | z | 68.94 | m | 71.04 | c | 78.59 | c | 85.83 | a | 85.79 | c | 79.64 | b | 61.37 | d | 61.43 | i | 52.57 | x | 77.04 | f |
1950 | 40.67 | y | 45.59 | f | 52.70 | d | 64.85 | d | 72.26 | d | 82.47 | 84.03 | 84.48 | 74.30 | 74.03 | 55.87 | 49.61 | m | 71.67 | c | ||||||
1951 | 40.86 | j | 44.50 | d | 49.06 | 61.93 | 71.03 | a | 81.13 | 90.26 | 82.87 | 79.04 | c | 62.41 | d | 45.67 | c | 34.81 | j | 66.79 | b | |||||
1952 | 38.86 | c | 41.59 | 40.48 | d | 61.25 | b | 73.27 | a | 81.60 | 86.33 | a | 85.41 | b | 77.55 | h | 72.11 | c | 43.62 | a | 39.04 | h | 62.45 | b | ||
1953 | 45.84 | 42.07 | 51.20 | a | 58.00 | b | 65.03 | 85.00 | 87.17 | a | 81.67 | a | 80.64 | b | 65.13 | a | 51.59 | a | 39.64 | c | 62.75 | |||||
1954 | 42.42 | 50.25 | 47.35 | h | 67.93 | a | 75.03 | 82.10 | 86.92 | e | 85.00 | i | 76.79 | b | 66.82 | c | 55.61 | b | 39.70 | a | 64.36 | b | ||||
1955 | 35.10 | 36.00 | 49.71 | g | 58.63 | 69.90 | 79.21 | a | 87.07 | a | 83.48 | 79.55 | a | 68.14 | b | 48.63 | 43.66 | b | 62.67 | a | ||||||
1956 | 44.54 | c | 39.88 | e | 53.42 | 59.55 | a | 74.13 | 85.81 | c | 86.45 | 82.34 | b | 82.87 | 67.86 | c | 47.79 | b | 42.95 | j | 65.88 | a | ||||
1957 | 36.89 | l | 47.68 | 50.46 | c | 55.79 | b | 65.19 | 80.97 | 85.84 | 82.48 | 79.13 | 59.53 | a | 41.25 | b | 43.64 | c | 62.91 | a | ||||||
1958 | 40.63 | d | 46.08 | c | 42.57 | a | 56.96 | b | 76.97 | a | 85.53 | 88.23 | a | 91.00 | s | 75.04 | e | 65.14 | b | 52.50 | d | 49.43 | a | 61.74 | a | |
1959 | 43.97 | b | 40.88 | b | 51.24 | b | 62.39 | b | 71.00 | a | 84.80 | 89.90 | a | 81.90 | b | 76.78 | c | 63.52 | b | 49.25 | b | 41.67 | a | 63.11 | ||
1960 | 34.47 | a | 37.17 | 53.52 | b | 61.93 | c | 71.73 | a | 85.27 | 90.87 | 88.67 | a | 78.83 | a | 58.61 | c | 50.79 | b | 38.93 | d | 62.56 | ||||
1961 | 42.45 | 43.93 | 48.07 | a | 59.20 | 72.26 | 86.80 | 87.81 | 82.52 | 71.00 | a | 61.55 | 44.33 | c | 35.47 | a | 61.28 | |||||||||
1962 | 37.19 | 42.32 | 44.33 | a | 65.59 | a | 69.61 | 81.38 | a | 87.84 | 87.94 | 77.97 | 67.05 | i | 52.97 | 43.84 | 62.82 | a | ||||||||
1963 | 35.61 | c | 48.93 | 50.23 | a | 59.36 | b | 76.23 | a | 81.58 | d | 91.00 | a | 82.00 | b | 79.39 | b | 68.67 | d | 52.14 | a | 42.69 | b | 63.99 | ||
1964 | 37.55 | 39.18 | a | 44.27 | a | 55.90 | 71.38 | b | 80.73 | 88.80 | a | 83.52 | b | 75.53 | 70.74 | 45.90 | a | 38.43 | c | 60.99 | ||||||
1965 | 42.21 | b | 42.26 | a | 44.19 | 55.57 | 64.93 | d | 76.57 | g | 84.03 | b | 83.21 | c | 68.83 | 65.74 | 51.48 | a | 39.94 | 58.40 | a | |||||
1966 | 36.67 | a | 36.31 | b | 53.65 | 62.63 | 72.65 | 79.17 | 84.71 | 83.32 | 74.67 | 62.45 | 53.60 | 38.35 | 61.51 | |||||||||||
1967 | 39.19 | 47.14 | 54.35 | 55.43 | 67.39 | 74.27 | 84.13 | 82.23 | 72.10 | 67.39 | 54.20 | 33.16 | 60.92 | |||||||||||||
1968 | 36.39 | 44.31 | 50.03 | 54.27 | 68.16 | 83.80 | 83.65 | 77.29 | 75.27 | 65.50 | e | 45.97 | 35.35 | 60.00 | ||||||||||||
1969 | 40.26 | 37.89 | 43.74 | 61.63 | 71.06 | 76.47 | 84.37 | a | 84.94 | 76.83 | a | 55.94 | 46.47 | 42.60 | a | 60.18 | ||||||||||
1970 | 40.06 | 47.14 | 45.06 | 52.90 | 70.41 | b | 78.60 | 85.61 | 83.35 | 72.48 | a | 57.77 | 49.53 | 38.60 | a | 60.13 | ||||||||||
1971 | 39.97 | 41.64 | 51.52 | 59.00 | 65.13 | 79.83 | 87.17 | a | 82.00 | a | 73.20 | 55.81 | 45.07 | 32.55 | 59.41 | |||||||||||
1972 | 42.00 | 48.38 | 59.42 | 61.37 | 70.58 | 78.40 | 87.28 | b | 80.77 | 73.03 | 55.55 | 40.82 | b | 34.00 | 60.97 | |||||||||||
1973 | ----- | z | 37.25 | 40.00 | 52.83 | a | 69.36 | f | 79.00 | 83.87 | 82.61 | 73.97 | 65.68 | 48.80 | 41.77 | 60.58 | b | |||||||||
1974 | 34.68 | 40.07 | 54.23 | 59.33 | 73.35 | 85.87 | 82.50 | a | 82.77 | 76.00 | 61.16 | 46.93 | 37.00 | 61.16 | ||||||||||||
1975 | 38.84 | 39.32 | 45.39 | 52.80 | 66.83 | a | 76.97 | 81.65 | 82.39 | 73.70 | 64.84 | 48.17 | 41.61 | 59.37 | ||||||||||||
1976 | 40.35 | 46.90 | 48.97 | 59.57 | 70.19 | 79.14 | a | 84.71 | 80.61 | 71.10 | 60.10 | 51.50 | 42.74 | 61.32 | ||||||||||||
1977 | 36.32 | 48.54 | 48.52 | 63.47 | 67.10 | 82.97 | 84.10 | 82.16 | 75.77 | 66.20 | a | 52.97 | 45.45 | 62.80 | ||||||||||||
1978 | 37.71 | 39.46 | 52.81 | 59.30 | 68.13 | 81.20 | 86.23 | 83.48 | 74.03 | 66.87 | 45.80 | 33.97 | 60.75 | |||||||||||||
1979 | 29.74 | 38.29 | 45.19 | 59.50 | 66.55 | 78.66 | a | 86.27 | a | 81.32 | 81.17 | 68.29 | 42.97 | 43.23 | 60.10 | |||||||||||
1980 | 39.87 | a | 45.24 | 46.52 | 59.59 | a | 65.00 | 82.21 | a | 87.80 | a | 83.77 | 76.43 | 63.90 | 52.79 | a | 49.38 | b | 62.71 | |||||||
1981 | 46.61 | 49.57 | 48.61 | 63.90 | a | 66.94 | 84.52 | a | 84.40 | a | 83.63 | a | 77.14 | i | 59.90 | a | 53.66 | a | 43.87 | a | 62.33 | a | ||||
1982 | 38.85 | d | 41.29 | 47.74 | h | 58.62 | a | 67.10 | 80.19 | d | 84.42 | e | 80.48 | d | 74.28 | e | 60.79 | g | 43.73 | d | 39.87 | 60.88 | b | |||
1983 | 42.33 | a | 44.00 | 48.31 | b | 53.24 | a | 68.81 | d | 78.52 | a | 83.33 | a | 82.55 | 78.75 | b | 64.19 | 50.36 | b | 41.40 | a | 61.32 | ||||
1984 | 41.24 | b | 45.82 | a | 50.74 | h | 58.12 | d | 77.79 | b | 80.44 | e | 84.43 | a | 79.97 | b | 77.28 | a | 55.89 | c | 50.27 | d | 39.07 | b | 62.76 | a |
1985 | 38.37 | a | 43.08 | b | 48.36 | c | 64.70 | c | 71.18 | c | 84.29 | b | 87.41 | b | 86.86 | c | 69.78 | g | 64.31 | e | 46.04 | f | 43.63 | a | 63.22 | b |
1986 | 50.08 | e | 47.57 | e | 55.96 | c | 61.65 | g | 72.32 | f | 83.67 | c | 83.31 | b | 84.80 | a | 70.37 | c | 60.96 | h | 48.54 | b | 42.62 | e | 62.99 | c |
1987 | 39.79 | c | 42.00 | g | 47.46 | c | 64.08 | e | 69.86 | c | 82.07 | c | 82.73 | a | 78.97 | a | 73.72 | e | 66.32 | c | 45.96 | b | 36.50 | c | 62.50 | a |
1988 | 38.06 | 44.69 | 51.77 | a | 59.00 | 70.69 | b | 80.62 | d | 86.54 | c | 79.74 | 72.70 | c | 68.11 | d | 49.63 | c | 37.86 | b | 61.62 | |||||
1989 | 37.29 | c | 41.82 | f | 58.77 | 68.03 | 72.68 | 81.71 | b | 86.73 | a | 81.23 | a | 76.79 | b | 63.52 | f | 52.90 | a | 44.66 | b | 66.08 | b | |||
1990 | 40.23 | a | 41.54 | 52.03 | 61.83 | a | 68.77 | 85.43 | 84.10 | a | 80.83 | a | 75.28 | a | 63.13 | 49.48 | a | 34.86 | b | 61.46 | ||||||
1991 | 36.33 | a | 46.46 | 45.68 | 58.10 | 68.35 | 76.97 | 84.32 | 81.74 | 74.93 | 65.32 | 46.36 | b | 38.14 | c | 60.23 | ||||||||||
1992 | 36.61 | 42.04 | a | 50.19 | d | 66.59 | a | 68.90 | a | 78.43 | 81.53 | a | 81.14 | b | 76.14 | a | 66.31 | b | 43.86 | b | 33.89 | d | 60.47 | |||
1993 | 37.79 | b | 38.40 | c | 51.11 | c | 61.79 | a | 70.55 | 79.10 | 84.84 | 80.87 | a | 76.90 | a | 60.47 | a | 46.89 | c | 40.66 | b | 60.78 | ||||
1994 | 43.27 | a | 41.00 | 53.74 | 58.77 | 70.97 | 85.80 | 88.20 | a | 85.21 | b | 76.18 | b | 61.69 | b | 44.44 | c | 40.19 | 62.45 | |||||||
1995 | 37.13 | a | 51.11 | a | 51.52 | b | 57.37 | c | 64.31 | e | 77.15 | d | 86.59 | d | 87.15 | d | 78.20 | 67.00 | a | 56.96 | c | 52.20 | p | 64.95 | a | |
1996 | 43.12 | e | 48.81 | b | 53.90 | a | 64.42 | f | 76.97 | a | 84.77 | d | 88.97 | b | 85.21 | c | 73.07 | c | 63.58 | e | 49.48 | e | 42.19 | d | 64.55 | a |
1997 | 37.61 | c | 40.62 | d | 57.15 | d | 54.18 | h | 73.63 | d | 80.00 | i | 85.71 | g | 81.96 | c | 75.76 | e | 59.30 | k | 51.00 | e | 37.85 | d | 56.95 | d |
1998 | 41.69 | e | 36.62 | b | 49.87 | 54.93 | b | 69.23 | e | 78.93 | a | 87.81 | 84.93 | b | 75.17 | l | 60.86 | i | 51.10 | i | 42.20 | f | 63.00 | d | ||
1999 | 45.96 | c | 49.35 | b | 57.17 | g | 55.32 | b | 69.03 | a | 81.42 | d | 84.29 | c | 79.68 | c | 74.71 | f | 69.67 | a | 59.93 | a | 40.81 | d | 63.55 | b |
2000 | 43.00 | d | 48.46 | c | 49.64 | c | 68.26 | c | 78.63 | d | 84.86 | a | 89.16 | 85.61 | 78.54 | b | 61.60 | a | 41.19 | d | 44.90 | b | 64.49 | |||
2001 | 37.14 | c | 44.09 | e | 51.90 | 60.00 | g | 77.04 | f | 85.59 | c | 85.03 | 83.90 | a | 82.11 | c | 68.57 | a | 52.96 | e | 37.56 | d | 62.89 | b | ||
2002 | 42.18 | c | 45.74 | a | 52.21 | c | 67.68 | b | 74.43 | c | 88.55 | a | 74.67 | d | 88.46 | g | 77.00 | d | 59.12 | g | 50.92 | f | 39.04 | g | 65.31 | d |
2003 | 49.23 | i | 44.48 | a | 51.38 | b | 60.27 | h | 76.04 | e | 84.74 | g | 91.33 | g | 84.73 | e | 78.00 | c | 68.17 | b | 47.21 | b | 41.92 | e | 61.49 | d |
2004 | 39.25 | c | 37.50 | a | 58.52 | b | 58.22 | c | 73.00 | 81.87 | 84.77 | 81.87 | a | 73.52 | a | 58.20 | a | 43.64 | b | 40.86 | b | 60.93 | ||||
2005 | 41.10 | 40.79 | 49.13 | a | 60.73 | 71.29 | 78.00 | c | 88.60 | a | 79.25 | c | 74.73 | 64.12 | e | 54.74 | c | 44.62 | b | 62.26 | ||||||
2006 | 43.93 | c | 48.65 | b | 46.94 | 63.32 | b | 75.67 | a | 85.23 | 85.81 | 80.90 | a | 70.39 | b | 59.97 | 52.52 | c | 40.50 | c | 62.82 | |||||
2007 | 36.50 | a | 45.43 | 58.77 | 62.77 | 72.07 | d | 84.07 | 87.84 | 83.57 | a | 77.13 | 64.75 | c | 56.61 | b | 36.57 | c | 63.84 | |||||||
2008 | 34.11 | c | 40.89 | a | 52.13 | a | 60.13 | 66.81 | 81.69 | a | 85.28 | b | 83.35 | 75.31 | a | 65.61 | 54.82 | b | 38.39 | c | 61.54 | |||||
2009 | 42.00 | e | 45.46 | 53.96 | c | 59.03 | a | 73.11 | d | 75.71 | b | 88.31 | b | 84.94 | 76.07 | b | 60.23 | a | 52.67 | c | 36.16 | f | 64.68 | a | ||
2010 | 38.12 | e | 38.81 | b | 48.69 | b | 60.60 | 68.06 | 81.46 | b | 84.81 | 79.67 | d | 79.70 | c | 62.86 | b | 51.25 | b | 45.46 | c | 61.62 | ||||
2011 | 40.30 | d | 40.93 | 54.58 | 63.30 | 67.13 | 82.27 | 85.45 | 85.76 | b | 77.77 | d | 64.70 | a | 49.11 | c | 37.78 | d | 62.42 | |||||||
2012 | 44.24 | b | 42.03 | 54.10 | b | 63.47 | 74.13 | 86.30 | 83.33 | a | 82.90 | a | 75.80 | 66.47 | a | 55.11 | b | 39.07 | c | 63.91 | ||||||
2013 | 36.64 | c | 40.43 | 55.32 | 61.03 | 70.35 | 85.40 | 84.03 | 80.42 | 73.96 | c | ----- | z | 50.43 | b | 38.58 | 61.51 | a | ||||||||
2014 | 45.65 | 48.86 | 55.03 | a | 61.07 | 69.94 | 83.40 | 87.16 | 79.81 | 76.97 | 67.42 | 53.14 | a | 45.27 | e | 64.47 | ||||||||||
2015 | 44.20 | f | 51.36 | 55.45 | 62.14 | b | 65.42 | 81.83 | 82.71 | 83.74 | 78.17 | 64.55 | 47.67 | 40.13 | 64.83 | a | ||||||||||
2016 | 38.61 | 52.45 | 57.58 | 59.07 | 67.71 | 87.17 | 86.71 | 79.29 | 74.80 | 68.58 | 57.67 | 43.70 | a | 64.44 | ||||||||||||
2017 | 35.07 | a | 46.61 | 59.19 | 61.53 | 70.10 | 86.93 | 85.35 | 82.81 | 76.67 | 69.45 | 59.83 | 53.29 | 65.57 | ||||||||||||
2018 | 50.39 | c | 49.32 | 55.52 | 69.87 | 75.45 | 87.44 | c | 86.97 | 86.84 | 80.23 | 64.10 | 49.71 | i | ----- | z | 70.61 | b | ||||||||
2019 | 36.47 | a | 37.61 | 46.85 | k | 65.80 | y | 64.13 | 80.50 | 88.29 | 87.06 | 79.63 | 65.42 | 53.53 | 37.48 | 63.01 | b | |||||||||
2020 | 39.94 | 45.86 | 51.68 | f | ----- | z | ----- | z | 82.18 | b | 85.77 | 89.68 | 79.13 | 68.61 | 52.10 | 38.61 | 64.65 | c | ||||||||
2021 | 39.75 | c | 43.14 | 47.45 | 62.81 | d | 71.65 | 85.93 | 86.55 | 83.94 | 78.97 | 61.29 | 56.97 | 42.55 | 63.42 | |||||||||||
2022 | 40.45 | 39.18 | 51.23 | 63.38 | d | 74.77 | a | 85.00 | 86.48 | 81.35 | 80.13 | 61.65 | 47.63 | 41.10 | 62.70 | |||||||||||
2023 | 34.71 | 40.68 | 42.77 | 62.03 | 71.19 | 78.70 | 92.19 | 84.71 | 77.83 | 68.10 | 54.59 | a | 45.03 | 62.71 | ||||||||||||
2024 | 39.97 | 47.55 | 51.39 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 46.30 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 39.79 | 43.56 | 50.76 | 60.53 | 70.72 | 81.87 | 86.09 | 83.10 | 76.45 | 64.36 | 50.20 | 40.84 | 61.94 | |||||||||||||
S.D. | 3.63 | 4.23 | 4.52 | 4.06 | 3.45 | 3.20 | 2.58 | 2.38 | 2.96 | 3.87 | 4.46 | 4.09 | 1.51 | |||||||||||||
SKEW | 0.44 | 0.11 | -0.21 | -0.06 | 0.11 | -0.01 | -0.77 | 0.30 | -0.25 | -0.30 | -0.09 | 0.42 | 0.38 | |||||||||||||
MAX | 50.39 | 52.45 | 59.42 | 69.87 | 78.63 | 88.55 | 92.19 | 89.68 | 82.87 | 74.03 | 59.93 | 53.29 | 65.57 | |||||||||||||
MIN | 29.74 | 36.00 | 40.00 | 51.36 | 64.13 | 74.27 | 74.67 | 77.29 | 68.83 | 55.55 | 40.82 | 32.55 | 59.37 | |||||||||||||
YRS | 75 | 75 | 71 | 74 | 78 | 80 | 81 | 81 | 77 | 72 | 75 | 72 | 42 |