YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1948 | 38.82 | 45.31 | 50.59 | d | 70.80 | 74.66 | 82.92 | 81.95 | 82.81 | 74.67 | 63.92 | 50.42 | 49.18 | 63.84 | ||||||||||||
1949 | 34.79 | 48.70 | 56.34 | 60.10 | 73.03 | 79.27 | 83.55 | 80.24 | 74.60 | 63.24 | 57.45 | 47.39 | 63.22 | |||||||||||||
1950 | 48.77 | 53.11 | 55.94 | 64.37 | 72.27 | 79.03 | 80.45 | 80.35 | 73.97 | 70.66 | 54.23 | 45.16 | 64.86 | |||||||||||||
1951 | 42.79 | 49.62 | 54.65 | 62.65 | 73.98 | 81.70 | 85.13 | 84.34 | 77.10 | 67.65 | 50.65 | 48.29 | 64.88 | |||||||||||||
1952 | 51.32 | 50.84 | 54.15 | 63.58 | 72.87 | 83.77 | 82.73 | 88.06 | 75.08 | 64.68 | 51.07 | 45.55 | 65.31 | |||||||||||||
1953 | 52.05 | 47.57 | 60.73 | 63.58 | 73.15 | 86.91 | a | 85.08 | 82.63 | 78.45 | 66.19 | 52.59 | g | 42.82 | 67.20 | a | ||||||||||
1954 | 46.45 | 54.41 | 54.90 | 68.65 | 68.02 | a | 79.79 | b | 84.71 | 83.68 | 79.05 | 66.60 | a | 54.77 | 48.22 | a | 65.77 | |||||||||
1955 | 43.80 | a | 46.45 | 57.60 | 67.90 | 73.66 | 79.82 | 81.90 | 80.71 | 76.50 | 67.00 | 53.78 | 47.58 | 64.72 | ||||||||||||
1956 | 44.68 | 45.68 | a | 57.12 | a | 62.62 | d | 77.00 | 84.31 | a | 83.97 | 83.26 | 78.07 | 68.73 | 51.02 | 49.02 | 65.45 | |||||||||
1957 | 45.59 | b | 53.57 | a | 55.30 | a | 61.17 | 69.31 | 77.07 | 84.94 | 83.33 | b | 73.71 | b | 61.74 | 46.71 | a | 49.82 | 63.52 | |||||||
1958 | 42.32 | 43.61 | a | 46.57 | a | 61.93 | c | 72.55 | ----- | z | 84.63 | 83.19 | b | 75.88 | 62.53 | 53.72 | 43.60 | 60.96 | a | |||||||
1959 | 41.04 | f | 45.50 | 55.12 | c | 62.05 | b | 73.59 | n | 81.12 | i | 78.94 | 82.77 | i | 77.57 | 62.90 | 47.20 | 48.10 | 59.67 | d | ||||||
1960 | 43.67 | d | 44.16 | d | 48.56 | 66.17 | c | 71.82 | 82.74 | i | 81.65 | e | 82.97 | 77.28 | 68.03 | 54.88 | 40.68 | 61.81 | a | |||||||
1961 | 40.81 | 47.18 | 54.03 | l | 64.32 | 73.62 | a | 77.50 | 78.36 | b | 78.97 | 73.90 | 65.89 | 49.05 | 44.39 | 63.09 | a | |||||||||
1962 | 37.90 | a | 54.32 | c | 50.56 | e | 63.87 | 78.16 | b | 80.83 | j | 82.77 | 84.03 | 73.83 | a | 67.52 | 55.30 | 45.48 | 63.07 | a | ||||||
1963 | 38.34 | 46.27 | b | 57.95 | b | 69.86 | a | 74.57 | c | 80.50 | h | 84.95 | a | 83.44 | 82.30 | y | ----- | z | ----- | z | ----- | z | 65.05 | e | ||
1964 | ----- | z | ----- | z | ----- | z | ----- | z | 74.79 | g | 80.77 | 84.95 | a | 83.85 | 75.20 | 65.76 | 56.42 | 48.13 | 70.73 | e | ||||||
1965 | 50.40 | 46.68 | 49.48 | 68.75 | h | 72.11 | 79.07 | 83.52 | 80.48 | 76.62 | 65.74 | 60.82 | 52.08 | 65.18 | a | |||||||||||
1966 | 40.34 | 45.05 | 59.10 | 63.83 | 71.55 | 78.82 | 85.08 | 78.05 | a | 74.07 | 63.66 | 60.80 | 45.03 | 63.78 | ||||||||||||
1967 | 47.82 | 49.54 | 64.63 | 71.42 | 73.79 | 81.15 | 82.39 | 79.89 | 72.13 | 66.98 | 56.18 | 45.00 | 65.91 | |||||||||||||
1968 | 45.53 | 46.48 | 55.57 | a | 63.05 | a | 73.27 | 79.25 | 80.69 | 81.55 | 74.53 | 69.73 | 53.17 | 47.68 | 64.21 | |||||||||||
1969 | 51.15 | a | 50.91 | 49.13 | 66.68 | 71.71 | 80.67 | 87.19 | 83.79 | 75.20 | 63.11 | 53.68 | 50.19 | 65.29 | ||||||||||||
1970 | 44.89 | 50.46 | 52.71 | 66.22 | 71.98 | 79.12 | 84.23 | 83.45 | 75.28 | a | 62.59 | d | 53.95 | 53.15 | 64.83 | |||||||||||
1971 | 44.69 | 45.45 | 54.29 | 63.48 | 70.24 | 79.57 | 82.18 | 75.16 | 72.07 | 64.11 | 53.97 | 46.82 | 62.67 | |||||||||||||
1972 | 44.16 | 47.84 | 59.61 | 67.40 | 70.84 | 78.95 | 79.69 | 77.69 | 74.73 | 63.37 | 46.00 | 42.35 | 62.72 | |||||||||||||
1973 | 37.60 | 42.52 | 54.66 | 56.78 | 69.55 | 76.48 | 79.95 | 80.71 | 72.12 | 66.27 | 56.77 | 46.37 | 61.65 | |||||||||||||
1974 | 41.85 | 47.57 | 61.19 | 64.12 | 75.08 | 78.87 | 82.30 | a | 77.52 | 65.63 | ----- | z | 51.60 | 43.45 | 62.65 | a | ||||||||||
1975 | 43.87 | 44.27 | 52.84 | 61.28 | 69.71 | 78.58 | 77.69 | 79.16 | 68.29 | a | 64.76 | 54.28 | 44.66 | 61.62 | ||||||||||||
1976 | 42.76 | 54.40 | 55.89 | 63.93 | 67.24 | 78.60 | 76.12 | a | 80.18 | 72.15 | 56.23 | a | 45.14 | a | 43.43 | c | 61.34 | |||||||||
1977 | 35.04 | d | 49.24 | a | ----- | z | 62.13 | 73.90 | 80.05 | 81.87 | 83.26 | b | 80.85 | 65.65 | a | 53.91 | c | 48.18 | a | 64.92 | a | |||||
1978 | 36.83 | a | 38.54 | a | ----- | z | 70.52 | 74.18 | 80.18 | b | 85.03 | 80.80 | a | 74.55 | a | 65.95 | l | 51.25 | p | 42.41 | c | 64.78 | c | |||
1979 | 34.40 | 44.46 | a | 55.08 | 65.12 | e | 71.50 | d | 78.10 | a | 82.74 | 79.37 | 75.25 | 69.10 | 49.16 | e | 45.29 | 62.47 | ||||||||
1980 | 42.70 | f | 46.66 | 54.13 | 62.28 | 71.81 | 83.20 | c | 87.75 | a | 82.80 | c | 75.55 | 63.43 | a | 51.09 | a | 47.59 | c | 66.03 | a | |||||
1981 | 43.97 | a | 49.14 | 52.52 | a | 66.27 | 71.06 | d | 78.48 | a | 83.74 | 80.63 | 77.27 | f | 63.61 | 56.27 | b | 50.59 | b | 63.30 | a | |||||
1982 | 40.39 | h | 45.26 | e | 57.59 | d | 63.17 | g | 71.35 | h | 75.48 | h | ----- | z | 83.73 | a | 77.57 | a | 64.04 | d | 52.96 | d | 44.15 | a | 60.76 | e |
1983 | 40.12 | b | 46.56 | d | 55.04 | c | 58.76 | c | 72.05 | b | 76.80 | c | 83.50 | c | ----- | z | 78.46 | c | 67.55 | c | 55.21 | d | 36.59 | d | 60.97 | a |
1984 | ----- | z | ----- | z | 53.44 | f | 63.39 | c | 74.87 | d | 81.54 | b | 82.50 | 82.92 | g | 74.57 | c | 63.02 | h | 52.18 | e | 47.20 | f | 71.51 | f | |
1985 | 37.46 | g | 42.10 | g | 57.11 | d | 66.83 | f | 73.98 | e | 76.40 | d | 81.05 | a | 84.56 | 74.62 | b | 64.08 | 55.58 | 41.77 | 67.69 | c | ||||
1986 | ----- | z | 56.53 | j | 59.58 | 69.38 | a | 73.50 | d | 77.73 | b | 83.69 | b | 80.52 | a | 75.95 | a | 63.27 | c | 52.67 | 43.37 | a | 67.96 | b | ||
1987 | 42.93 | a | 48.38 | 50.29 | b | 60.29 | a | 70.74 | 76.45 | 80.73 | 83.10 | a | 73.05 | a | 66.72 | a | 52.85 | 44.45 | 62.50 | |||||||
1988 | 40.15 | 45.43 | 55.25 | a | 63.70 | 70.77 | 79.22 | 81.13 | 81.42 | 75.25 | 65.35 | 56.30 | 44.76 | 63.23 | ||||||||||||
1989 | 47.02 | 42.43 | 55.34 | 67.75 | b | 75.84 | 76.74 | a | 82.74 | 83.21 | j | 72.73 | b | 66.53 | 54.62 | 37.47 | 61.75 | a | ||||||||
1990 | 47.52 | a | 52.04 | a | 54.90 | a | 63.63 | 72.03 | 85.79 | b | 78.90 | a | 79.40 | 75.14 | a | 63.63 | a | 56.28 | a | 42.65 | 64.33 | |||||
1991 | 39.77 | 50.95 | 57.94 | 67.17 | a | 75.42 | 79.18 | 80.63 | 78.82 | a | 71.26 | c | 66.07 | a | 48.33 | 45.43 | a | 63.41 | ||||||||
1992 | 42.61 | 51.78 | 57.92 | a | 65.69 | a | 68.10 | 76.92 | 82.08 | 78.26 | b | 75.80 | 67.39 | ----- | z | 46.11 | 64.79 | a | ||||||||
1993 | 42.05 | 46.39 | 53.38 | a | 63.53 | a | 71.24 | 79.52 | 84.95 | 84.13 | 73.00 | 63.40 | 48.70 | 46.87 | 63.10 | |||||||||||
1994 | 44.65 | 45.88 | 56.66 | 64.04 | b | 70.47 | 83.78 | 84.84 | 82.69 | 74.23 | 66.61 | h | 55.07 | 48.10 | 64.58 | a | ||||||||||
1995 | 46.28 | d | 50.68 | 53.31 | 63.78 | 69.03 | a | 75.74 | c | 80.66 | b | 81.91 | b | 74.19 | a | 67.08 | 55.41 | a | 45.57 | a | 63.64 | |||||
1996 | 44.25 | a | 50.07 | 50.27 | ----- | z | 80.71 | 82.56 | c | 84.64 | c | 80.61 | ----- | z | 65.27 | 52.90 | a | 48.05 | a | 63.93 | b | |||||
1997 | 42.73 | 45.27 | 57.35 | a | 57.07 | 69.89 | 76.45 | a | 83.95 | 83.30 | a | 78.55 | 66.45 | 50.85 | 42.50 | a | 62.86 | |||||||||
1998 | 49.13 | 49.43 | 53.16 | 62.65 | 79.52 | 85.65 | 88.42 | 81.90 | 79.97 | 69.27 | a | 57.16 | a | 44.57 | a | 66.73 | ||||||||||
1999 | 48.08 | a | 54.79 | 54.98 | 65.79 | a | 72.56 | 79.53 | 84.25 | a | 85.66 | b | 76.21 | a | 66.27 | 59.29 | a | 46.44 | 66.15 | |||||||
2000 | 48.35 | 55.31 | 59.02 | 66.07 | b | 78.76 | 78.20 | 86.33 | a | 85.52 | d | 79.07 | a | 66.10 | a | 47.90 | a | 41.05 | c | 65.97 | ||||||
2001 | 41.47 | 48.86 | 51.73 | 67.24 | a | 76.05 | 83.70 | 87.97 | a | 83.53 | 75.70 | 67.05 | 56.57 | 47.28 | a | 65.59 | ||||||||||
2002 | 47.00 | 45.52 | a | 52.32 | 66.98 | a | 73.97 | a | 81.19 | a | 82.24 | 85.00 | a | 76.53 | 62.97 | 50.60 | 45.58 | 64.16 | ||||||||
2003 | 44.95 | 46.59 | 57.27 | 66.87 | 75.42 | 78.20 | 84.03 | a | 84.15 | a | 74.37 | 67.39 | 55.33 | 47.92 | 65.21 | |||||||||||
2004 | 47.24 | 45.90 | 59.60 | 63.75 | 75.38 | a | 81.03 | a | 81.73 | 79.52 | 75.15 | 66.61 | 52.32 | 45.15 | 64.45 | |||||||||||
2005 | 49.00 | 47.85 | b | 54.43 | a | 63.62 | b | 70.77 | 81.70 | 82.52 | a | 79.65 | 79.20 | b | 65.45 | 56.57 | 44.98 | 64.64 | ||||||||
2006 | 51.42 | 48.21 | 57.66 | 69.37 | 76.65 | 81.67 | 84.74 | 82.63 | 71.50 | 65.55 | c | 56.68 | 46.03 | b | 66.01 | |||||||||||
2007 | 38.88 | c | 46.92 | b | 59.38 | a | 60.58 | 69.46 | d | 76.85 | 78.45 | a | 80.69 | 76.98 | 69.73 | 54.64 | a | 46.29 | 63.24 | |||||||
2008 | 44.40 | 50.93 | 56.13 | 65.03 | 74.55 | 84.18 | 82.15 | a | 79.92 | 72.00 | a | 65.15 | 54.67 | 46.06 | 64.60 | |||||||||||
2009 | 44.84 | 53.37 | b | 58.44 | 63.55 | b | 72.23 | a | 81.16 | a | 83.05 | 83.68 | 73.07 | 62.85 | 56.12 | a | 41.43 | c | 64.48 | |||||||
2010 | 43.95 | b | 42.00 | 54.40 | b | 63.75 | 72.57 | a | 84.30 | c | 80.32 | 84.65 | 76.83 | 66.68 | 56.14 | a | 48.18 | 64.48 | ||||||||
2011 | 43.18 | 46.18 | 61.02 | 70.90 | 75.35 | 88.12 | 89.21 | 90.00 | 77.30 | 68.05 | a | 54.60 | 42.13 | 67.17 | ||||||||||||
2012 | 47.23 | 48.71 | a | 60.84 | 71.78 | 76.98 | a | 83.98 | a | 83.55 | 84.75 | a | 75.63 | 63.77 | 58.10 | 48.18 | 66.96 | |||||||||
2013 | 45.23 | c | 48.11 | f | 57.91 | h | 63.87 | o | 69.82 | n | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 45.23 | k |
2014 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2015 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 83.88 | g | 80.52 | 67.90 | 53.93 | 46.73 | e | 62.27 | h | |||
2016 | 45.12 | b | 52.12 | a | 60.40 | 64.55 | 68.61 | 78.62 | a | 87.29 | 82.60 | f | 78.82 | 72.98 | 59.95 | 46.24 | b | 64.97 | a | |||||||
2017 | 46.19 | g | 55.10 | b | 62.32 | f | 67.86 | a | 69.92 | e | 81.91 | a | 84.82 | a | 80.27 | 76.30 | 67.33 | e | 57.48 | b | 43.39 | 68.44 | b | |||
2018 | 41.62 | a | 49.04 | 60.10 | 62.40 | a | 80.48 | 86.07 | 85.98 | 84.23 | 74.58 | 61.60 | 49.26 | c | 44.52 | a | 64.99 | |||||||||
2019 | 45.92 | 49.43 | 54.60 | b | 65.63 | 70.73 | a | 79.62 | 84.35 | 88.03 | 81.59 | a | 62.44 | 51.18 | 49.29 | 65.23 | ||||||||||
2020 | 47.39 | 44.91 | 58.77 | ----- | z | ----- | z | ----- | z | 86.84 | 86.26 | 71.07 | 64.79 | 58.33 | 44.71 | 62.56 | c | |||||||||
2021 | 42.81 | 37.84 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 69.06 | 56.42 | ----- | z | 51.53 | h | ||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 43.98 | 47.99 | 55.67 | 64.76 | 72.98 | 80.36 | 83.15 | 82.20 | 75.30 | 65.63 | 53.77 | 45.68 | 64.35 | |||||||||||||
S.D. | 4.09 | 3.75 | 3.53 | 3.26 | 2.96 | 2.91 | 2.63 | 2.71 | 2.81 | 2.59 | 3.48 | 2.99 | 1.43 | |||||||||||||
SKEW | -0.28 | -0.08 | -0.19 | 0.08 | 0.53 | 0.65 | -0.15 | 0.17 | -0.43 | -0.27 | -0.39 | -0.36 | -0.14 | |||||||||||||
MAX | 52.05 | 55.31 | 64.63 | 71.78 | 80.71 | 88.12 | 89.21 | 90.00 | 81.59 | 72.98 | 60.82 | 53.15 | 67.17 | |||||||||||||
MIN | 34.40 | 37.84 | 46.57 | 56.78 | 67.24 | 75.74 | 76.12 | 75.16 | 65.63 | 56.23 | 45.14 | 36.59 | 61.34 | |||||||||||||
YRS | 64 | 67 | 64 | 64 | 66 | 63 | 69 | 65 | 68 | 67 | 68 | 69 | 44 |