YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1940 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 84.78 | f | ----- | 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 | ----- | z | ----- | z | ----- | z | ----- | z |
1946 | 32.38 | a | 38.35 | a | 48.50 | j | 60.54 | d | 64.59 | b | 77.65 | 83.31 | d | 81.87 | 72.57 | a | 53.85 | g | 43.47 | a | 37.98 | b | 59.27 | b | ||
1947 | 29.91 | b | 42.40 | b | 48.98 | a | 56.54 | d | 70.78 | o | 74.52 | d | 83.92 | l | 79.63 | e | 74.66 | e | 61.00 | h | 41.95 | a | 34.89 | c | 53.72 | c |
1948 | 31.94 | e | 39.26 | d | 41.96 | e | 57.41 | c | 67.43 | i | 77.15 | f | 81.62 | g | 79.47 | a | 73.10 | f | 56.98 | d | 39.06 | e | 35.42 | e | 47.69 | d |
1949 | 29.92 | e | 31.68 | c | 48.21 | g | 59.21 | f | 65.31 | 74.10 | 81.80 | a | 79.50 | 73.92 | d | 55.79 | 46.70 | 33.90 | 57.26 | b | ||||||
1950 | 32.47 | 41.52 | 49.93 | c | 57.80 | 62.95 | 73.02 | d | ----- | z | 78.22 | b | 70.63 | 64.26 | 45.35 | c | 40.00 | c | 56.01 | a | ||||||
1951 | 32.73 | 39.93 | 45.94 | 56.48 | 66.92 | 75.22 | 87.60 | a | 81.56 | 74.73 | o | 56.57 | h | 41.46 | q | 30.00 | o | 60.80 | d | |||||||
1952 | 30.03 | 38.48 | d | 42.71 | 57.05 | a | 67.11 | 74.28 | l | 79.74 | 80.82 | c | 72.54 | b | 60.60 | 40.13 | 33.80 | a | 54.82 | a | ||||||
1953 | 37.00 | 38.30 | 46.45 | 53.82 | 62.39 | 77.14 | a | 82.73 | 78.06 | 72.02 | 57.10 | a | 45.05 | 32.55 | a | 56.88 | ||||||||||
1954 | 35.37 | 44.88 | 47.05 | 59.87 | g | 68.66 | 75.60 | 83.79 | 79.02 | 73.09 | c | 59.98 | 46.90 | a | 33.42 | a | 58.89 | a | ||||||||
1955 | 32.79 | 31.67 | b | 45.18 | 53.16 | a | 63.27 | a | 72.57 | a | 81.90 | 81.82 | 72.80 | 59.53 | a | 42.60 | a | 37.00 | b | 56.19 | ||||||
1956 | 38.87 | 36.03 | 46.44 | 56.16 | a | 67.60 | 79.27 | 81.14 | b | 77.42 | 72.72 | 58.35 | a | 37.63 | d | 32.41 | b | 57.00 | ||||||||
1957 | 35.95 | b | 44.71 | 47.48 | a | 53.44 | d | 61.03 | 75.08 | 79.68 | 79.82 | a | 69.80 | 57.85 | 40.96 | b | 37.40 | 56.94 | ||||||||
1958 | 35.13 | 44.31 | a | 44.32 | 54.42 | 69.94 | 78.88 | 81.26 | 82.65 | 71.36 | a | 57.63 | 43.03 | 36.18 | a | 58.26 | ||||||||||
1959 | 33.43 | a | 37.96 | 45.02 | e | 57.45 | 66.35 | e | 79.60 | a | 84.39 | 78.56 | 69.50 | b | 56.65 | 41.54 | b | 35.60 | 57.17 | |||||||
1960 | 29.50 | 35.05 | 47.78 | b | 56.64 | a | 65.90 | a | 77.68 | b | 83.65 | 81.15 | 73.23 | 56.33 | a | 44.61 | b | 32.59 | b | 57.01 | ||||||
1961 | 30.77 | 42.29 | b | 46.95 | 55.42 | 65.63 | 78.28 | 82.70 | a | 79.39 | 66.82 | 55.67 | a | 41.90 | 20.92 | a | 55.56 | |||||||||
1962 | 25.37 | 40.75 | 40.47 | a | 58.42 | 61.50 | d | 73.64 | i | ----- | z | 76.07 | x | 71.65 | m | 59.31 | d | 47.53 | a | 36.29 | 46.21 | d | ||||
1963 | 19.17 | g | 41.59 | a | 44.91 | b | 53.50 | b | 67.78 | a | 72.04 | b | 83.22 | d | 78.56 | e | 72.71 | b | 63.21 | b | 46.77 | d | 29.96 | d | 59.48 | a |
1964 | 32.04 | e | ----- | z | ----- | z | 53.88 | f | 64.69 | g | 75.75 | f | 84.69 | e | 77.83 | e | 69.91 | h | 59.59 | h | 40.17 | i | 32.71 | j | 64.85 | i |
1965 | 35.20 | k | 35.43 | g | 42.91 | i | 54.13 | g | 62.63 | 71.09 | a | 79.95 | 78.00 | 67.47 | 58.18 | 47.63 | 36.52 | 62.68 | d | |||||||
1966 | 30.77 | 33.46 | 46.42 | 55.62 | a | 67.94 | 75.80 | b | 82.02 | 80.56 | 70.63 | 56.19 | 45.92 | 31.31 | 56.39 | |||||||||||
1967 | 30.31 | 41.30 | 52.50 | 52.95 | 63.84 | 72.88 | 84.11 | 80.87 | 71.38 | 59.79 | 46.35 | 29.85 | a | 57.18 | ||||||||||||
1968 | 25.63 | 44.22 | 48.42 | 53.13 | 63.19 | d | 75.38 | 81.94 | 73.91 | b | 68.82 | 58.05 | 43.03 | 27.10 | 55.23 | |||||||||||
1969 | 33.84 | 39.52 | 44.00 | 56.70 | 68.71 | 72.47 | 81.15 | 82.84 | 72.90 | ----- | z | ----- | z | 34.79 | x | 61.35 | c | |||||||||
1970 | 32.23 | c | 43.36 | 45.18 | 49.83 | 66.55 | 74.97 | 82.97 | 82.45 | 65.38 | 53.32 | 43.80 | 33.08 | 56.09 | ||||||||||||
1971 | 33.11 | 38.71 | 46.11 | 55.77 | 62.33 | e | 75.95 | 84.08 | 83.70 | h | 67.31 | a | 54.84 | 41.33 | 27.16 | 53.34 | a | |||||||||
1972 | 32.74 | 39.66 | 48.75 | y | 58.00 | b | 64.43 | a | 75.39 | b | 81.19 | b | 78.79 | 71.05 | 57.71 | 41.23 | 29.69 | 57.26 | a | |||||||
1973 | 20.83 | a | 36.13 | a | 43.21 | 52.03 | 64.27 | a | 72.58 | 80.10 | 78.19 | 64.06 | f | 55.50 | c | 46.58 | d | 35.02 | b | 53.13 | a | |||||
1974 | 25.42 | 31.54 | a | 50.44 | 52.68 | 67.71 | 78.05 | a | 80.69 | 78.37 | 70.88 | a | 57.38 | b | 43.87 | 32.34 | 55.78 | |||||||||
1975 | 29.60 | 37.05 | 44.81 | 50.07 | 59.94 | 70.78 | 80.05 | 77.29 | 69.71 | a | 55.15 | 41.50 | 33.91 | b | 54.15 | |||||||||||
1976 | 31.32 | 41.79 | 43.55 | a | 53.97 | 65.57 | a | 73.08 | 82.79 | 75.62 | c | 68.35 | 54.50 | 43.57 | 30.61 | 55.39 | ||||||||||
1977 | 23.40 | 39.62 | 41.02 | 55.62 | 62.06 | 77.82 | 80.53 | b | 78.23 | a | 72.24 | i | 56.26 | 43.07 | 38.16 | 54.16 | a | |||||||||
1978 | 37.24 | 39.62 | 49.72 | b | 55.28 | 61.02 | a | 75.22 | 81.16 | 77.90 | 68.17 | 58.45 | 44.80 | 24.50 | 56.09 | |||||||||||
1979 | 26.56 | 32.50 | 44.60 | 54.77 | 64.06 | 72.63 | 80.26 | 76.58 | 72.12 | 58.76 | 38.77 | 33.89 | 54.62 | |||||||||||||
1980 | 37.16 | 41.75 | a | 43.87 | 52.85 | 60.85 | 73.72 | 80.52 | 77.84 | 68.64 | b | 53.39 | 43.35 | 39.44 | 56.11 | |||||||||||
1981 | 37.58 | 39.75 | 46.02 | 59.72 | 64.26 | 79.42 | 82.37 | a | 79.32 | 71.03 | 55.98 | 45.27 | 36.66 | 58.11 | ||||||||||||
1982 | 34.30 | a | 35.17 | b | 46.58 | 53.88 | 64.08 | a | 73.50 | 80.94 | 79.16 | 70.83 | a | 51.42 | 42.07 | 37.16 | 55.76 | |||||||||
1983 | 35.19 | 42.66 | 47.53 | 50.70 | 62.26 | 72.48 | 80.55 | 81.71 | 72.68 | 58.50 | 45.12 | a | 35.65 | 57.09 | ||||||||||||
1984 | 32.79 | 36.34 | 44.65 | 51.00 | 68.11 | 73.82 | 82.35 | 79.61 | 71.57 | 52.10 | 42.87 | 37.26 | 56.04 | |||||||||||||
1985 | 34.87 | a | 35.90 | b | 47.02 | 57.30 | 65.90 | 76.88 | 83.19 | 80.16 | 67.03 | 57.61 | 43.88 | 37.11 | 57.24 | |||||||||||
1986 | 37.52 | 43.91 | 51.62 | a | 55.70 | 65.37 | 77.27 | 79.39 | 80.48 | 66.73 | 55.16 | 44.65 | 36.63 | 57.87 | ||||||||||||
1987 | 31.53 | 39.14 | 44.00 | a | 55.57 | 64.60 | a | 75.87 | 78.56 | 76.73 | 69.07 | 59.34 | 42.75 | 32.48 | 55.80 | |||||||||||
1988 | 29.15 | a | 39.22 | 44.79 | 52.10 | 62.65 | a | 74.45 | a | 81.39 | 77.34 | 66.22 | 60.19 | 43.20 | 32.83 | b | 55.29 | |||||||||
1989 | 26.79 | 35.41 | 48.53 | 59.37 | 65.20 | a | 72.79 | a | 80.98 | 74.42 | 69.27 | 56.69 | 44.32 | 33.61 | 55.62 | |||||||||||
1990 | 31.35 | 40.29 | b | 49.37 | 58.22 | 64.66 | 78.23 | 83.87 | 79.15 | 74.26 | a | 57.35 | a | 43.87 | 22.22 | b | 56.90 | |||||||||
1991 | 23.97 | a | 36.62 | 44.27 | a | 54.20 | 63.48 | 74.25 | 82.27 | a | 80.17 | a | 71.78 | 60.47 | 43.27 | 32.40 | 55.60 | |||||||||
1992 | 32.31 | 40.74 | 48.87 | 60.82 | 67.02 | a | 73.72 | 79.08 | 79.82 | 70.78 | 61.00 | 40.20 | 21.39 | 56.31 | ||||||||||||
1993 | 37.05 | 41.39 | 48.90 | 54.25 | 65.44 | 72.74 | a | 80.77 | 78.00 | a | 69.10 | 56.27 | 40.40 | 33.77 | 56.51 | |||||||||||
1994 | 35.27 | 37.19 | a | 50.03 | a | 56.50 | 67.07 | b | 80.43 | 84.92 | 83.63 | 72.10 | 55.89 | 41.22 | 36.84 | 58.42 | ||||||||||
1995 | 37.55 | a | 46.00 | 49.88 | a | 52.52 | 61.07 | a | 71.68 | 79.98 | 82.63 | a | 72.08 | 56.34 | 46.05 | a | 36.08 | 57.66 | ||||||||
1996 | 34.63 | 43.45 | 45.87 | 54.20 | 69.16 | 78.22 | a | 84.73 | 81.23 | 67.83 | a | 57.98 | c | 43.18 | b | 34.97 | 57.95 | |||||||||
1997 | 31.95 | 38.16 | 48.76 | 53.37 | 67.68 | 74.91 | a | 78.71 | 77.35 | 72.32 | 56.52 | 44.10 | 33.42 | 56.44 | ||||||||||||
1998 | 36.30 | a | 39.98 | 46.17 | b | 51.81 | a | 64.58 | 72.52 | 84.44 | 82.00 | a | 72.75 | 56.45 | a | 44.08 | 35.32 | a | 57.20 | |||||||
1999 | 37.73 | 40.96 | 51.29 | 52.27 | 64.48 | 75.67 | a | 82.61 | 78.29 | 68.90 | 57.79 | 45.93 | 33.48 | b | 57.45 | |||||||||||
2000 | 37.19 | 42.59 | 46.37 | 60.24 | a | 68.82 | 78.43 | 84.03 | 84.28 | a | 71.38 | 58.03 | a | 38.77 | 36.63 | a | 58.90 | |||||||||
2001 | 34.16 | 38.80 | a | 49.10 | 56.07 | 68.02 | 76.57 | 82.67 | a | 80.50 | 73.45 | 59.87 | e | 38.88 | r | 25.24 | f | 61.92 | b | |||||||
2002 | 26.33 | p | 29.24 | i | 36.68 | l | 59.34 | b | 66.56 | 79.32 | 86.76 | 80.32 | a | 71.63 | 56.95 | 44.77 | 36.26 | 64.66 | c | |||||||
2003 | 40.97 | 40.52 | 48.26 | 55.38 | 68.52 | 77.68 | 87.22 | a | 83.19 | 71.30 | 62.63 | a | 44.62 | 36.31 | 59.72 | |||||||||||
2004 | 34.29 | 37.19 | 53.61 | 57.19 | f | 68.03 | 77.30 | 82.28 | a | 79.94 | 69.73 | 58.62 | b | 44.47 | a | 35.58 | a | 58.28 | a | |||||||
2005 | 41.56 | 43.36 | c | 48.02 | 55.78 | a | 66.63 | a | 74.77 | b | 84.22 | a | 78.56 | 71.77 | 59.09 | b | 45.40 | 34.10 | a | 58.60 | ||||||
2006 | 35.87 | 40.05 | 47.21 | b | 58.30 | b | 69.82 | c | 79.65 | 85.62 | a | 79.67 | b | 66.29 | a | 55.20 | a | 44.95 | 34.55 | 58.10 | ||||||
2007 | 30.52 | 41.07 | 50.21 | 57.57 | 68.11 | 78.34 | a | 85.45 | 82.32 | 72.67 | 57.03 | 46.25 | 32.69 | 58.52 | ||||||||||||
2008 | 30.79 | g | 39.89 | g | 47.16 | 53.28 | a | 62.50 | 75.08 | 85.05 | b | 81.29 | 71.09 | c | 57.40 | b | 45.92 | 35.50 | 61.43 | b | ||||||
2009 | 37.87 | 40.29 | 48.24 | b | 53.47 | a | 69.23 | a | 73.92 | 84.42 | a | 79.21 | c | 73.32 | 53.90 | 44.38 | a | 28.93 | c | 57.26 | ||||||
2010 | 26.61 | 38.67 | a | 46.21 | 54.80 | 61.83 | a | 76.35 | 83.05 | b | 77.69 | 71.75 | 59.03 | 40.60 | 39.13 | 56.31 | ||||||||||
2011 | 31.45 | a | 35.80 | 47.45 | b | 54.32 | 62.50 | 76.32 | 82.37 | d | 85.18 | n | 72.84 | a | 57.53 | 42.88 | a | 33.00 | 54.22 | a | ||||||
2012 | 35.47 | 39.69 | 50.15 | 57.97 | 68.97 | 80.58 | 84.63 | 83.39 | 73.05 | 60.08 | 46.05 | 34.56 | 59.55 | |||||||||||||
2013 | 28.55 | 36.71 | 49.88 | a | 56.38 | 66.62 | a | 80.32 | 86.00 | a | 81.32 | 72.88 | 54.76 | 43.15 | 31.94 | 57.38 | ||||||||||
2014 | 35.48 | 42.11 | 48.40 | 56.02 | 64.85 | 77.50 | 86.13 | 79.61 | 74.67 | 61.10 | 43.95 | 37.68 | a | 58.96 | ||||||||||||
2015 | 36.65 | a | 43.43 | 52.35 | 56.57 | 64.25 | a | 77.67 | 79.71 | 81.02 | 74.63 | 63.13 | 43.82 | 33.84 | 58.92 | |||||||||||
2016 | 33.02 | 41.47 | 49.74 | 56.08 | 63.82 | 81.10 | a | 83.92 | a | 78.27 | 68.38 | 61.35 | a | 48.37 | 35.85 | 58.45 | ||||||||||
2017 | 36.61 | 43.96 | 51.40 | 54.35 | 62.79 | j | 78.35 | 84.89 | 80.40 | 72.57 | 55.68 | 47.80 | 34.52 | 58.23 | a | |||||||||||
2018 | 36.34 | 39.27 | 47.08 | 55.88 | d | 68.25 | q | ----- | z | ----- | z | ----- | z | ----- | z | 55.83 | p | 41.02 | b | 35.00 | a | 42.43 | f | |||
2019 | 35.00 | k | 35.29 | n | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 32.84 | 39.52 | 47.17 | 55.33 | 65.27 | 75.83 | 82.57 | 79.64 | 70.92 | 57.63 | 43.67 | 33.74 | 56.98 | |||||||||||||
S.D. | 4.22 | 3.33 | 2.78 | 2.51 | 2.56 | 2.62 | 2.16 | 2.11 | 2.31 | 2.56 | 2.35 | 3.91 | 1.29 | |||||||||||||
SKEW | -0.55 | -0.48 | -0.06 | 0.04 | -0.06 | 0.08 | 0.22 | -0.14 | -0.55 | 0.21 | -0.33 | -1.48 | 0.13 | |||||||||||||
MAX | 41.56 | 46.00 | 53.61 | 60.82 | 69.94 | 81.10 | 87.60 | 84.28 | 74.67 | 64.26 | 48.37 | 40.00 | 59.72 | |||||||||||||
MIN | 20.83 | 31.54 | 40.47 | 49.83 | 59.94 | 70.78 | 78.56 | 73.91 | 65.38 | 51.42 | 37.63 | 20.92 | 54.15 | |||||||||||||
YRS | 69 | 69 | 67 | 68 | 68 | 68 | 68 | 69 | 66 | 67 | 69 | 69 | 49 |