YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1940 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 71.20 | u | 50.69 | a | 42.90 | 46.80 | j | |
1941 | 44.45 | 49.22 | a | 46.65 | 57.60 | 69.68 | 76.90 | 81.55 | 82.48 | 75.80 | 62.84 | 58.07 | 50.55 | b | 62.98 | |||||||||||
1942 | 44.73 | e | 44.21 | 51.42 | 61.66 | a | 70.68 | 78.30 | c | 84.35 | 81.58 | 73.18 | b | 64.00 | b | 68.00 | c | 59.24 | f | 65.65 | a | |||||
1943 | 46.90 | b | 55.21 | 53.97 | a | 68.67 | 69.03 | 81.40 | 86.03 | a | 87.58 | 78.57 | 68.48 | 54.07 | a | 44.13 | 66.17 | |||||||||
1944 | 43.81 | 45.83 | 52.16 | 54.80 | 70.48 | 80.45 | a | 85.50 | a | 85.84 | 79.57 | 69.03 | a | 54.73 | 43.52 | 63.81 | ||||||||||
1945 | 44.60 | a | 49.11 | 57.03 | b | 57.66 | a | 76.61 | 80.67 | 83.13 | 85.81 | 80.55 | a | 67.90 | 59.77 | 46.19 | 65.75 | |||||||||
1946 | 44.84 | 49.96 | 55.23 | 72.20 | 67.58 | 83.40 | 87.67 | g | 87.84 | 78.29 | i | 66.00 | b | 48.46 | d | 56.54 | g | 63.95 | c | |||||||
1947 | 44.80 | a | 48.46 | b | 51.50 | c | ----- | z | 73.07 | d | 79.10 | i | 85.07 | c | 84.31 | b | 83.56 | e | 72.28 | b | 48.25 | b | 41.90 | a | 63.32 | b |
1948 | 39.21 | b | 41.59 | b | 42.81 | 68.71 | b | 69.76 | b | 78.61 | b | 86.03 | b | 82.48 | b | 80.93 | b | 68.80 | a | 51.04 | c | 50.73 | e | 63.39 | ||
1949 | 35.79 | b | 46.35 | b | 55.07 | b | 61.31 | d | 72.86 | j | 77.48 | i | 83.96 | e | 84.96 | f | 78.76 | e | 68.33 | a | 65.26 | g | 47.80 | a | 59.67 | d |
1950 | 50.68 | 54.57 | 56.45 | k | ----- | z | 74.85 | r | 82.40 | e | 80.19 | e | 79.41 | d | 72.75 | b | 75.46 | c | 59.43 | b | 51.66 | b | 67.39 | c | ||
1951 | 43.77 | a | 50.85 | b | 52.63 | d | 58.92 | d | 71.04 | d | 76.80 | e | 84.86 | c | 83.83 | a | 76.93 | b | 67.50 | e | 53.63 | c | 47.79 | g | 65.52 | a |
1952 | 49.62 | b | 49.36 | g | 49.04 | d | 62.21 | b | 72.07 | a | 86.96 | b | 85.03 | b | 87.19 | d | 76.38 | d | 70.21 | c | 46.86 | b | 44.63 | a | 66.38 | a |
1953 | 54.38 | j | 40.96 | d | 59.92 | e | 62.59 | c | 65.76 | f | 88.07 | c | 86.33 | a | 82.17 | b | 81.00 | a | 66.70 | a | 56.64 | b | 41.50 | a | 66.59 | b |
1954 | 50.16 | 58.08 | c | 54.78 | d | 69.76 | a | 67.04 | c | 83.33 | f | 88.00 | 85.97 | 81.62 | f | 67.89 | c | 60.45 | a | 51.34 | b | 65.35 | b | |||
1955 | 44.50 | a | 43.19 | a | 57.37 | d | 62.07 | c | 69.48 | b | 76.31 | d | 86.75 | w | 84.33 | d | 80.59 | c | 70.62 | b | 57.50 | d | 53.30 | d | 63.57 | a |
1956 | 49.97 | b | 44.56 | b | 58.47 | a | 65.35 | g | 78.00 | c | 86.00 | b | 87.93 | b | 86.57 | a | 84.21 | b | 72.30 | a | 54.69 | a | 54.87 | a | 68.87 | a |
1957 | 45.75 | c | 55.93 | 52.00 | d | 56.52 | c | 65.83 | b | 80.14 | a | 85.93 | b | 83.29 | c | 75.77 | d | 61.77 | a | 46.42 | d | 53.10 | a | 63.54 | ||
1958 | 45.94 | 51.43 | 42.30 | a | 56.46 | d | 72.52 | b | 80.53 | 84.33 | a | 86.70 | a | 79.24 | a | 66.07 | b | 54.11 | l | 52.29 | g | 66.55 | b | |||
1959 | 43.23 | a | 46.57 | 53.73 | a | 60.00 | a | 71.24 | b | 81.87 | 84.26 | d | 83.89 | c | 77.68 | b | 62.76 | b | 55.25 | b | 48.27 | a | 64.06 | |||
1960 | 39.68 | 37.28 | 52.77 | a | 67.26 | c | 73.29 | 81.63 | 81.79 | c | 84.81 | 78.67 | c | 64.27 | e | 56.57 | 40.04 | e | 63.17 | |||||||
1961 | 46.53 | a | 46.43 | 51.93 | d | 62.36 | b | 72.96 | d | 80.07 | a | 83.48 | b | 82.55 | b | 73.48 | e | 67.61 | c | 47.70 | 42.72 | f | 65.01 | a | ||
1962 | 42.38 | b | 54.37 | a | 50.76 | b | 66.18 | b | 76.30 | d | 76.77 | d | 82.21 | c | 87.35 | 77.67 | 71.22 | d | 57.96 | b | 51.24 | b | 66.20 | |||
1963 | 39.52 | b | 51.04 | a | 55.29 | 68.74 | c | 74.72 | b | 80.69 | a | 90.07 | b | 83.43 | a | 79.07 | a | 73.32 | 61.03 | 47.67 | d | 67.05 | ||||
1964 | 47.83 | b | 37.72 | 49.79 | c | 62.03 | a | 75.70 | d | 82.52 | a | 89.14 | b | 85.27 | a | 75.81 | c | 69.25 | c | 54.79 | b | 45.52 | d | 64.61 | ||
1965 | 49.56 | d | 46.60 | c | 44.43 | a | 65.41 | a | 69.72 | b | 75.60 | 82.89 | c | 79.53 | a | 71.53 | 70.03 | a | 61.97 | 52.59 | b | 64.16 | ||||
1966 | 42.73 | e | 45.07 | a | 59.13 | 63.70 | 74.17 | a | 80.90 | a | 89.30 | a | 79.87 | a | 79.52 | c | 67.45 | b | 60.93 | b | 48.84 | 65.97 | ||||
1967 | 49.85 | d | 50.85 | a | 63.80 | a | 68.73 | 71.83 | b | 76.45 | a | 80.26 | 79.84 | 73.03 | a | 71.10 | 58.90 | 43.55 | 65.68 | |||||||
1968 | 48.71 | 51.48 | 54.29 | 60.50 | 70.58 | 88.37 | 85.53 | a | 81.26 | 78.43 | 71.42 | 52.50 | 48.71 | 65.98 | ||||||||||||
1969 | 53.00 | 49.04 | 40.72 | b | 64.73 | 73.71 | 76.83 | 86.42 | 85.94 | 75.70 | 59.03 | 55.47 | 48.65 | 64.10 | ||||||||||||
1970 | 45.90 | 55.07 | 49.23 | 61.03 | a | 74.77 | 80.27 | 86.00 | 85.97 | 77.93 | a | 61.19 | 56.70 | 53.52 | 65.63 | |||||||||||
1971 | 48.55 | 47.11 | 58.71 | 63.33 | 71.00 | a | 84.50 | 84.26 | 81.13 | 74.28 | a | 66.87 | 56.80 | 44.84 | 65.11 | |||||||||||
1972 | 50.39 | 54.79 | 64.73 | a | 67.83 | 72.87 | 83.47 | 83.03 | 82.74 | 76.50 | 66.58 | 44.17 | 44.71 | 65.98 | ||||||||||||
1973 | 42.65 | 46.79 | 50.60 | a | 57.37 | 68.52 | 82.40 | 85.23 | 88.13 | 76.21 | a | 69.87 | 61.72 | a | 49.30 | a | 64.90 | |||||||||
1974 | 44.00 | 54.57 | 66.13 | 69.77 | 84.16 | 88.23 | 90.77 | 82.45 | 73.41 | c | 71.94 | 58.80 | 45.90 | 69.18 | ||||||||||||
1975 | 44.52 | 45.93 | 55.16 | 62.00 | a | 72.52 | 80.63 | 84.94 | 87.87 | a | 74.26 | c | 70.32 | 54.73 | 49.00 | 65.16 | ||||||||||
1976 | 48.19 | 55.89 | a | 54.37 | a | 67.53 | ----- | z | 81.07 | 85.06 | 84.32 | 75.60 | 60.06 | 54.38 | a | 49.24 | b | 65.07 | a | |||||||
1977 | 44.35 | 52.79 | 55.30 | d | 60.40 | 72.16 | 84.53 | 87.58 | 83.32 | 80.80 | 71.84 | ----- | z | 52.06 | 67.74 | a | ||||||||||
1978 | 42.39 | 43.93 | 60.00 | 68.37 | 70.77 | 80.57 | 89.60 | a | 85.23 | 78.70 | 71.19 | 50.70 | 41.29 | 65.23 | ||||||||||||
1979 | 37.07 | a | 47.14 | 55.26 | 63.33 | 67.74 | 78.63 | 84.94 | 82.03 | 79.43 | 73.13 | 48.50 | 52.35 | 64.13 | ||||||||||||
1980 | 44.81 | 52.86 | 54.06 | 60.80 | 67.45 | 87.80 | 92.87 | 87.68 | 81.20 | 67.27 | a | 54.73 | 57.03 | 67.38 | ||||||||||||
1981 | 51.84 | 55.96 | 55.13 | 72.70 | 71.42 | 88.37 | 87.26 | 80.84 | 76.07 | 66.19 | 59.77 | 49.37 | a | 67.91 | ||||||||||||
1982 | 49.83 | a | 50.52 | c | 56.53 | a | 65.08 | d | 70.74 | d | 75.54 | d | 83.86 | b | 83.52 | b | 78.36 | b | 66.21 | b | 55.03 | a | 44.03 | 64.94 | ||
1983 | 48.04 | c | 45.00 | b | 50.86 | b | 57.76 | e | 67.86 | i | 77.81 | d | 86.40 | f | 88.76 | b | 82.93 | 70.57 | a | 56.03 | a | 36.19 | 61.40 | b | ||
1984 | 43.48 | 51.45 | 53.69 | b | 60.76 | a | 76.00 | a | 82.46 | b | 85.87 | a | 82.97 | a | 78.03 | a | 58.74 | 52.14 | i | 46.07 | a | 65.41 | a | |||
1985 | 37.27 | a | 47.33 | a | 56.03 | a | 66.60 | 72.39 | 83.10 | 87.39 | 86.30 | a | 76.38 | a | 67.94 | 56.73 | 46.32 | 65.31 | ||||||||
1986 | 56.26 | 50.24 | c | 63.39 | 68.62 | a | 73.26 | 79.00 | c | 87.03 | 85.20 | a | 76.47 | 63.58 | 53.93 | c | 45.48 | 66.87 | ||||||||
1987 | 43.03 | 45.89 | 52.52 | b | 65.50 | b | 71.06 | 81.32 | b | 87.37 | d | 83.32 | 76.50 | b | 70.71 | 53.97 | 42.68 | 64.49 | ||||||||
1988 | 39.19 | 51.93 | 56.21 | b | 68.00 | a | 71.94 | 82.86 | a | 85.61 | 85.17 | a | 75.93 | 70.28 | b | 57.37 | c | 48.10 | a | 66.05 | ||||||
1989 | 50.81 | 43.25 | 65.87 | 70.70 | 75.10 | 76.93 | 84.32 | 82.19 | 75.07 | 70.03 | a | 61.34 | a | 44.27 | a | 66.66 | ||||||||||
1990 | 45.06 | 45.50 | 54.24 | b | 66.43 | 70.94 | 89.73 | 83.30 | a | 80.06 | 77.80 | 70.81 | 58.83 | a | 45.75 | c | 65.70 | |||||||||
1991 | 44.13 | 55.75 | 57.66 | b | 65.77 | 76.74 | 82.23 | 82.90 | a | 80.32 | 75.45 | a | 69.74 | 48.47 | 45.81 | d | 65.41 | |||||||||
1992 | 46.67 | a | 52.46 | a | 60.06 | 71.74 | c | 72.39 | 79.79 | a | 84.81 | 82.74 | 81.57 | 73.81 | 48.14 | a | 43.74 | 66.49 | ||||||||
1993 | 43.81 | 46.32 | 57.53 | a | 65.50 | 72.72 | b | 82.26 | c | 88.47 | a | 82.46 | c | 79.30 | 68.78 | d | 52.61 | b | 49.35 | 65.76 | ||||||
1994 | 49.06 | 53.89 | a | 60.86 | b | 67.71 | b | 74.14 | c | 90.43 | b | 89.32 | 85.50 | a | 79.87 | 68.00 | b | 54.59 | a | 52.67 | a | 68.84 | ||||
1995 | 48.42 | 57.19 | b | 59.43 | a | 62.30 | 69.06 | 77.96 | c | 86.34 | b | 89.55 | 79.39 | b | 73.41 | b | 62.28 | a | 49.61 | 67.91 | ||||||
1996 | 49.63 | a | 55.59 | 57.58 | 68.70 | c | 82.89 | c | 85.10 | 85.52 | b | 81.58 | 74.63 | 68.35 | 58.79 | b | 51.00 | 68.28 | ||||||||
1997 | 44.00 | 43.75 | d | 63.00 | a | 58.96 | c | 73.21 | b | 80.13 | 88.00 | a | 83.87 | a | 81.28 | a | 67.33 | a | 50.04 | b | 41.61 | 64.60 | ||||
1998 | 50.90 | 49.26 | a | 57.08 | g | 62.53 | 79.07 | a | 87.13 | 88.66 | b | 83.54 | g | 85.74 | g | 68.21 | b | 60.17 | a | 48.21 | c | 66.02 | c | |||
1999 | 52.70 | a | 60.67 | a | 60.00 | d | 62.17 | a | 70.55 | 80.37 | 87.27 | a | 84.29 | 77.96 | c | 72.07 | b | 68.31 | d | 49.40 | a | 68.81 | ||||
2000 | 53.23 | 60.78 | b | 58.36 | c | 72.54 | b | 82.25 | g | 84.10 | a | 88.94 | 90.80 | a | 87.14 | a | 67.57 | a | 49.48 | a | 47.55 | b | 69.13 | a | ||
2001 | 42.83 | b | 47.00 | 56.07 | c | 71.36 | b | 74.33 | a | 84.30 | c | 92.06 | 86.63 | a | 83.29 | b | 75.15 | d | 61.70 | c | 51.65 | 68.86 | ||||
2002 | 50.47 | a | 49.25 | 58.62 | b | 73.21 | b | 80.58 | g | 89.11 | c | 88.41 | b | 87.82 | c | 78.30 | c | 63.10 | 53.93 | c | 41.39 | 66.69 | a | |||
2003 | 51.70 | a | 47.68 | c | 59.23 | a | 68.93 | b | 78.00 | b | 77.50 | 92.29 | 86.43 | c | 79.07 | c | 73.43 | a | 56.38 | a | 52.07 | b | 68.56 | |||
2004 | 48.70 | a | 45.26 | b | 63.23 | a | 62.30 | c | 80.38 | b | 82.75 | b | 82.36 | c | 79.18 | c | 78.14 | a | 67.19 | d | 49.48 | i | ----- | z | 68.95 | b |
2005 | 55.38 | r | 50.62 | g | 54.46 | g | 63.77 | h | 71.67 | a | 82.23 | 87.16 | 81.23 | 79.59 | c | 67.48 | d | 60.48 | a | 48.36 | c | 72.28 | d | |||
2006 | 53.70 | a | 53.79 | d | 56.55 | 71.57 | 76.93 | b | 86.70 | c | 84.77 | e | 79.10 | a | 69.14 | b | 65.83 | a | 59.61 | b | 46.00 | b | 66.97 | |||
2007 | 33.54 | c | 47.96 | a | 60.81 | 61.75 | b | 70.21 | c | 79.97 | 85.37 | a | 89.58 | 80.66 | a | 72.28 | b | 59.10 | a | 47.22 | h | 67.38 | a | |||
2008 | 47.07 | d | 51.74 | b | 56.84 | 65.60 | 75.06 | 86.59 | a | 85.32 | 80.97 | b | 74.59 | a | 66.94 | 58.69 | a | 46.93 | a | 66.36 | ||||||
2009 | 51.41 | b | 55.32 | 59.76 | b | 63.10 | 73.79 | b | 82.79 | a | 86.93 | a | 83.67 | a | 73.55 | a | 58.97 | b | 60.17 | 40.80 | a | 65.86 | ||||
2010 | 47.65 | 35.00 | a | 51.50 | a | 65.27 | 70.46 | c | 85.43 | 85.04 | g | 85.87 | 83.13 | 68.97 | a | 55.48 | a | 51.13 | a | 63.63 | a | |||||
2011 | 48.29 | 46.76 | c | 60.55 | 68.00 | a | 73.74 | 88.80 | 92.39 | 89.00 | 77.03 | 67.68 | 56.31 | a | 36.10 | 67.05 | ||||||||||
2012 | 49.54 | c | 46.25 | a | 62.70 | a | 68.68 | b | 76.13 | 87.53 | 89.27 | a | 86.84 | 78.56 | c | 66.57 | a | ----- | z | ----- | z | 71.21 | b | |||
2013 | 43.32 | ----- | z | ----- | z | 62.33 | 74.73 | a | ----- | z | 83.13 | 83.90 | a | 77.97 | 64.52 | 53.57 | 47.06 | 65.61 | c | |||||||
2014 | 50.45 | 51.64 | 58.23 | 64.63 | 73.32 | 82.93 | 85.29 | 83.19 | 76.93 | 69.68 | 56.86 | a | 44.84 | 66.50 | ||||||||||||
2015 | 44.81 | 50.21 | 57.94 | 65.37 | 68.06 | 83.43 | 85.23 | 83.35 | 81.60 | 67.68 | 54.47 | 46.10 | 65.69 | |||||||||||||
2016 | 45.42 | 54.38 | 60.03 | 63.13 | 70.00 | 84.37 | 90.71 | 81.03 | 77.63 | 74.55 | 59.27 | 49.74 | 67.52 | |||||||||||||
2017 | 44.71 | 58.21 | 64.61 | 62.73 | 70.61 | 84.27 | 86.26 | 78.39 | 75.87 | 67.19 | 65.57 | 52.35 | 67.56 | |||||||||||||
2018 | 52.32 | 54.64 | 59.74 | 63.60 | 79.81 | 87.47 | 86.77 | 82.55 | 78.80 | 61.97 | 50.70 | 47.65 | 67.17 | |||||||||||||
2019 | 48.06 | 49.57 | 53.94 | 66.60 | 67.87 | 82.00 | 88.39 | 87.81 | 83.60 | 63.43 | a | 56.83 | 51.00 | 66.59 | ||||||||||||
2020 | 48.32 | 47.34 | 60.52 | 65.00 | b | 77.57 | a | 87.33 | 86.87 | 87.90 | ----- | z | ----- | z | ----- | z | ----- | z | 70.11 | d | ||||||
2021 | 45.81 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 45.81 | k | |
2022 | 49.10 | b | 47.30 | a | ----- | z | 67.57 | b | 75.81 | d | 82.41 | a | 87.04 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 68.21 | f |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 46.37 | 49.55 | 55.95 | 64.72 | 72.85 | 82.41 | 86.18 | 84.18 | 77.95 | 68.09 | 55.92 | 47.40 | 66.00 | |||||||||||||
S.D. | 4.33 | 5.18 | 5.29 | 4.32 | 3.61 | 3.79 | 2.73 | 2.89 | 3.18 | 3.81 | 4.88 | 4.21 | 1.57 | |||||||||||||
SKEW | -0.47 | -0.22 | -0.56 | -0.07 | 0.74 | 0.18 | 0.30 | 0.08 | 0.09 | -0.48 | -0.06 | -0.36 | 0.13 | |||||||||||||
MAX | 56.26 | 60.78 | 66.13 | 73.21 | 84.16 | 90.43 | 92.87 | 90.80 | 87.14 | 75.46 | 68.31 | 57.03 | 69.18 | |||||||||||||
MIN | 33.54 | 35.00 | 40.72 | 54.80 | 65.83 | 75.54 | 80.19 | 78.39 | 69.14 | 58.74 | 44.17 | 36.10 | 62.98 | |||||||||||||
YRS | 80 | 78 | 76 | 77 | 74 | 77 | 77 | 78 | 76 | 79 | 74 | 72 | 53 |