YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 62.45 | 52.40 | 37.00 | 50.62 | i | |||
1950 | 18.69 | b | 37.68 | 50.65 | 61.67 | 73.97 | 83.37 | k | 93.30 | k | 92.68 | i | 84.76 | i | 58.96 | c | 47.00 | g | 38.50 | k | 50.27 | f | ||||
1951 | 36.09 | i | 36.96 | 43.61 | 66.30 | 73.58 | 80.53 | 92.48 | 89.23 | 79.30 | 59.94 | 41.57 | 27.45 | 62.81 | a | |||||||||||
1952 | 23.87 | 35.93 | 45.61 | 64.90 | 73.77 | 78.00 | 88.55 | 87.77 | 81.43 | 70.03 | 42.61 | b | 35.74 | 60.69 | ||||||||||||
1953 | 40.37 | a | 45.62 | b | 55.21 | b | 61.80 | 71.12 | f | 75.29 | b | 89.61 | 86.87 | 81.93 | 66.17 | a | 47.73 | 41.43 | a | 62.91 | a | |||||
1954 | 31.57 | a | 44.15 | a | 53.20 | a | 64.82 | b | 76.72 | b | 75.41 | a | 85.66 | b | ----- | z | 75.43 | 60.03 | 49.93 | 34.61 | 59.23 | a | ||||
1955 | 31.77 | 34.89 | 44.06 | 57.43 | 66.07 | a | 82.07 | 85.73 | a | 88.10 | b | 79.30 | 62.39 | 36.55 | a | 29.53 | a | 58.16 | ||||||||
1956 | 33.26 | 27.14 | 44.97 | 68.30 | 77.00 | ----- | z | 92.58 | 85.71 | 77.50 | 59.61 | 39.75 | b | 35.94 | 58.34 | a | ||||||||||
1957 | 21.45 | 35.68 | 50.61 | 64.93 | 77.29 | 82.17 | 87.16 | 83.97 | 83.77 | 59.87 | a | 47.37 | 40.57 | a | 61.24 | |||||||||||
1958 | 37.48 | 46.04 | 52.77 | 62.13 | 83.84 | 85.83 | 93.19 | 94.87 | 78.03 | 64.97 | 42.63 | 36.33 | a | 64.84 | ||||||||||||
1959 | 34.10 | 36.57 | 53.26 | 64.17 | 68.65 | 78.30 | 89.77 | 85.71 | 71.93 | 60.81 | 43.83 | 36.90 | 60.33 | |||||||||||||
1960 | 29.74 | 41.66 | 51.94 | 61.97 | 68.48 | 81.03 | 95.06 | 83.65 | 79.70 | 66.81 | 45.93 | 32.94 | 61.58 | |||||||||||||
1961 | 36.65 | 44.93 | 52.90 | 63.40 | 70.26 | 85.00 | 89.23 | 92.77 | 76.30 | 62.94 | 42.73 | 34.10 | 62.60 | |||||||||||||
1962 | 30.16 | 39.68 | 49.06 | 67.27 | 68.45 | 80.27 | 86.03 | 83.16 | 81.20 | 62.48 | 49.53 | 39.40 | a | 61.39 | ||||||||||||
1963 | 32.29 | 43.41 | a | 55.42 | 58.47 | 72.55 | 79.10 | 84.13 | 86.00 | 84.40 | 67.23 | 46.70 | 33.19 | 61.91 | ||||||||||||
1964 | 35.77 | 39.14 | ----- | z | 63.20 | 70.81 | 77.73 | 86.29 | 81.61 | 74.77 | 63.97 | 44.83 | 31.48 | 60.87 | a | |||||||||||
1965 | 34.48 | 41.04 | 50.26 | 63.47 | 71.77 | 79.67 | 87.94 | 85.39 | 74.87 | 68.16 | 48.20 | 36.48 | 61.81 | |||||||||||||
1966 | 31.81 | 40.68 | 52.35 | 66.30 | 74.13 | 77.07 | 84.16 | 87.26 | 82.77 | 63.29 | 49.30 | 39.61 | 62.39 | |||||||||||||
1967 | 40.45 | 50.82 | 53.71 | 59.87 | 72.23 | 79.83 | 87.61 | 92.03 | 87.57 | 63.29 | 49.13 | 33.42 | 64.16 | |||||||||||||
1968 | 33.74 | 46.03 | 55.81 | 62.30 | 72.90 | 79.55 | a | 88.03 | 80.48 | 77.87 | 59.26 | 47.03 | 33.50 | a | 61.38 | |||||||||||
1969 | 21.29 | 32.86 | 46.87 | 62.17 | 76.19 | 84.30 | 85.45 | 88.58 | 77.23 | 61.06 | 46.00 | 35.61 | 59.80 | |||||||||||||
1970 | 30.10 | 41.25 | 51.97 | 60.43 | 73.94 | 82.73 | 90.00 | 90.90 | 74.33 | 62.83 | a | 43.13 | 30.52 | 61.01 | ||||||||||||
1971 | 32.61 | 40.11 | 44.68 | 59.83 | 71.97 | 74.53 | 84.94 | 91.48 | 73.73 | 61.45 | 44.40 | 28.87 | 59.05 | |||||||||||||
1972 | 30.03 | a | 39.03 | 51.74 | 59.73 | 69.94 | 75.23 | ----- | z | 87.35 | 73.97 | a | 63.16 | 46.00 | 32.90 | 57.19 | a | |||||||||
1973 | 31.97 | 39.68 | 56.52 | 66.67 | 76.29 | ----- | z | 90.87 | 91.29 | 78.17 | 61.32 | 40.50 | ----- | z | 63.33 | b | ||||||||||
1974 | 33.53 | a | 43.82 | 51.77 | 62.37 | 68.45 | 80.70 | g | 83.68 | 88.53 | a | 82.33 | 65.68 | 45.93 | 38.61 | 60.43 | a | |||||||||
1975 | 31.97 | 32.89 | 45.13 | 58.83 | 70.19 | 78.60 | 93.06 | 83.19 | 81.37 | 60.63 | a | 47.07 | 37.35 | 60.02 | ||||||||||||
1976 | 34.68 | 43.89 | a | 48.58 | 61.60 | 70.26 | 76.43 | 86.29 | 80.52 | 82.33 | 63.84 | 47.70 | 36.39 | 61.04 | ||||||||||||
1977 | 28.74 | ----- | z | 54.42 | 71.07 | 69.61 | 86.03 | 88.68 | 93.87 | 73.90 | 63.84 | 45.60 | 35.84 | 64.69 | a | |||||||||||
1978 | 33.48 | 39.29 | 55.00 | 61.60 | 71.16 | 85.10 | 89.97 | 86.29 | 73.03 | 65.87 | 42.52 | e | 31.04 | d | 61.20 | |||||||||||
1979 | 23.39 | 35.54 | 56.97 | 64.13 | 76.81 | 84.62 | a | 91.26 | 90.10 | 82.43 | 66.87 | 41.20 | 39.45 | 62.73 | ||||||||||||
1980 | 28.61 | 36.48 | 50.00 | a | 67.13 | 72.84 | 75.87 | 88.58 | 85.06 | 77.13 | 64.87 | 46.63 | c | 36.29 | 60.79 | |||||||||||
1981 | 39.87 | 43.57 | 59.10 | 63.73 | 71.06 | 73.87 | 85.16 | 94.13 | 79.93 | 61.35 | 49.10 | 36.29 | 63.10 | |||||||||||||
1982 | 33.38 | b | 39.96 | 51.94 | 60.40 | 72.39 | 85.34 | a | 84.80 | a | 88.10 | a | 76.87 | 62.35 | 40.79 | a | 35.29 | 60.97 | ||||||||
1983 | 38.43 | a | 43.00 | 55.58 | 64.21 | a | 76.20 | a | 79.70 | 81.68 | 89.23 | 74.33 | 63.74 | 48.50 | b | 26.97 | a | 61.80 | ||||||||
1984 | 35.55 | 40.48 | 55.81 | 61.53 | 67.48 | 76.80 | 89.52 | 90.06 | 75.27 | 60.87 | 43.70 | 24.90 | 60.16 | |||||||||||||
1985 | 28.97 | b | 32.75 | 48.32 | 67.17 | 76.55 | 83.03 | 98.06 | 86.87 | 71.50 | 60.90 | 31.80 | 27.87 | 59.48 | ||||||||||||
1986 | 34.16 | 39.14 | 56.45 | 63.03 | 75.23 | 87.90 | 85.77 | 95.10 | 72.17 | 66.74 | d | 47.83 | 35.42 | 63.25 | ||||||||||||
1987 | 34.84 | 44.21 | 56.23 | 70.43 | 78.48 | 86.69 | a | 86.77 | 89.94 | 85.57 | 68.16 | 50.00 | 36.06 | 65.62 | ||||||||||||
1988 | 33.06 | 44.83 | 57.29 | 68.45 | a | 74.61 | 81.07 | a | 91.90 | 89.90 | 80.87 | 69.61 | 46.86 | a | 34.84 | 64.44 | ||||||||||
1989 | 38.10 | 33.82 | 53.79 | g | 68.60 | 73.74 | 86.23 | 90.29 | 85.87 | 82.40 | 64.77 | 49.63 | 38.77 | a | 64.75 | a | ||||||||||
1990 | 43.65 | 39.50 | 58.55 | 69.60 | 71.19 | 78.55 | a | 91.84 | 90.06 | 86.33 | 60.23 | 52.03 | 30.07 | a | 64.30 | |||||||||||
1991 | 31.00 | 49.86 | ----- | z | 66.80 | 71.94 | 77.40 | 91.42 | 91.74 | 84.13 | 63.16 | 44.10 | a | 39.45 | 64.64 | a | ||||||||||
1992 | 39.29 | 46.31 | 62.87 | 67.17 | 80.23 | 89.23 | 87.23 | 90.23 | 77.87 | 63.55 | 43.73 | 31.00 | b | 64.89 | ||||||||||||
1993 | 28.03 | 36.71 | 50.03 | 61.00 | 79.84 | 79.23 | 81.00 | 85.81 | 80.40 | 67.97 | 43.50 | 36.00 | 60.79 | |||||||||||||
1994 | 38.65 | 39.96 | 61.13 | a | 68.47 | 76.06 | 82.43 | 96.00 | 90.84 | 84.97 | 64.74 | 41.17 | 35.84 | 65.02 | ||||||||||||
1995 | 34.40 | a | 46.11 | 54.19 | 64.87 | 78.52 | 81.50 | 90.77 | 84.03 | 83.33 | 62.26 | 48.13 | 36.58 | 63.72 | ||||||||||||
1996 | 31.13 | 38.28 | 51.55 | 64.14 | a | 68.29 | 78.27 | 92.94 | 91.10 | 76.93 | 59.65 | 42.00 | 28.03 | a | 60.19 | |||||||||||
1997 | 31.50 | a | 37.89 | 49.94 | 62.20 | 71.13 | 75.70 | 86.81 | 89.97 | 78.47 | 60.68 | 47.13 | 36.61 | 60.67 | ||||||||||||
1998 | 35.13 | a | 45.00 | 56.68 | 66.13 | 74.81 | 82.17 | 94.84 | 94.71 | 87.23 | 65.00 | 50.10 | 34.68 | 65.54 | ||||||||||||
1999 | 37.77 | a | 42.71 | 53.68 | 65.10 | 69.55 | 79.40 | 87.26 | 90.65 | 79.17 | 63.16 | 49.20 | 40.39 | 63.17 | ||||||||||||
2000 | 34.03 | 39.79 | 54.32 | 68.87 | 71.74 | 82.53 | 89.65 | 89.48 | 76.50 | 61.77 | 39.57 | 30.27 | a | 61.54 | ||||||||||||
2001 | 34.87 | 39.18 | 55.00 | 63.47 | 77.55 | 78.07 | 89.71 | 92.35 | 82.57 | 61.61 | 48.00 | 37.93 | a | 63.36 | ||||||||||||
2002 | 38.84 | 43.43 | 49.32 | 64.57 | 71.48 | 82.87 | 91.53 | a | 89.52 | 79.76 | a | 63.45 | 46.40 | 38.52 | 63.31 | |||||||||||
2003 | 36.45 | 43.32 | 56.52 | 63.27 | 72.29 | 85.43 | 95.48 | 91.97 | 82.13 | 66.55 | 41.67 | 34.03 | 64.09 | |||||||||||||
2004 | 33.35 | 40.76 | 59.48 | 70.40 | 73.71 | 84.97 | 92.52 | 91.52 | 76.90 | 64.32 | 46.20 | 37.23 | 64.28 | |||||||||||||
2005 | 31.81 | 47.46 | 59.77 | 66.37 | 75.35 | 79.48 | a | 90.80 | a | 91.94 | 78.10 | 63.39 | 41.57 | 30.03 | 63.01 | |||||||||||
2006 | 39.23 | 43.46 | 52.52 | 64.10 | a | 75.03 | 82.27 | 94.58 | 90.39 | 80.93 | 64.19 | 43.13 | 32.81 | 63.55 | ||||||||||||
2007 | 31.33 | a | 41.29 | 55.90 | 64.27 | 76.52 | 80.13 | 94.65 | 88.84 | 79.20 | 60.23 | 43.93 | 33.71 | 62.50 | ||||||||||||
2008 | 27.77 | 41.28 | 52.48 | 59.60 | 75.84 | 79.10 | 90.87 | 88.30 | a | 78.83 | a | 62.03 | 46.45 | a | 29.55 | 61.01 | ||||||||||
2009 | 30.35 | 35.72 | c | 49.03 | 63.18 | b | 75.42 | 84.90 | 93.68 | 90.97 | 82.23 | 57.94 | 49.18 | b | 30.26 | 61.90 | ||||||||||
2010 | 38.94 | 45.71 | 57.84 | 62.70 | 67.70 | d | 75.17 | 90.68 | 88.13 | 76.47 | 64.39 | 41.63 | 34.45 | 61.98 | ||||||||||||
2011 | 34.55 | 38.00 | 51.32 | 58.37 | 66.29 | 73.73 | 81.71 | 95.77 | 84.10 | a | 61.97 | 45.50 | 36.52 | 60.65 | ||||||||||||
2012 | 33.52 | 41.52 | 52.52 | 64.57 | 71.23 | 74.37 | 91.10 | 94.27 | a | 82.67 | 64.00 | a | 47.69 | a | 38.10 | a | 62.96 | |||||||||
2013 | 29.90 | 41.54 | 56.19 | 64.41 | c | 71.77 | e | 78.40 | 96.48 | 90.29 | 81.38 | d | 61.39 | 44.41 | a | 30.90 | 62.26 | |||||||||
2014 | 37.23 | 38.07 | 54.58 | 64.53 | 72.86 | c | 80.20 | 94.29 | 91.55 | 79.67 | 66.42 | 44.59 | a | 38.16 | 63.51 | |||||||||||
2015 | 35.68 | 48.80 | c | 60.68 | 66.07 | b | 79.37 | a | 91.72 | a | 95.29 | 89.74 | 78.31 | a | 66.87 | 46.27 | 32.82 | t | 68.98 | a | ||||||
2016 | 33.74 | 44.95 | i | 56.65 | 70.88 | d | 76.68 | 82.80 | 87.06 | 89.76 | j | 76.54 | d | 59.40 | a | 52.60 | 32.65 | 62.90 | b | |||||||
2017 | 29.80 | a | 35.96 | 49.48 | 61.10 | 69.90 | 80.62 | a | 97.90 | k | 95.47 | l | 83.36 | h | 61.86 | c | 47.96 | g | 32.62 | g | 55.53 | e | ||||
2018 | 37.66 | b | 40.73 | b | 51.32 | 63.17 | 80.00 | 81.73 | 93.42 | 89.71 | 82.82 | s | 58.13 | 47.00 | 39.19 | 62.01 | a | |||||||||
2019 | 36.58 | 30.64 | 47.77 | 64.47 | 76.65 | 83.10 | 88.74 | 91.52 | 74.13 | 58.10 | 45.57 | 35.32 | 61.05 | |||||||||||||
2020 | 37.55 | 46.52 | 55.39 | 64.13 | 73.00 | 79.82 | b | 86.06 | 86.45 | 78.03 | 63.93 | a | ----- | z | ----- | z | 67.09 | b | ||||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 33.26 | 40.58 | 53.04 | 64.14 | 73.40 | 80.69 | 89.53 | 89.00 | 79.18 | 63.12 | 45.44 | 34.59 | 62.15 | |||||||||||||
S.D. | 4.71 | 4.60 | 4.28 | 3.16 | 3.66 | 3.93 | 3.86 | 3.50 | 3.85 | 2.80 | 3.70 | 3.74 | 1.72 | |||||||||||||
SKEW | -0.73 | -0.27 | -0.18 | 0.21 | 0.26 | 0.34 | -0.04 | -0.40 | 0.06 | 0.33 | -0.74 | -0.47 | 0.10 | |||||||||||||
MAX | 43.65 | 50.82 | 62.87 | 71.07 | 83.84 | 91.72 | 98.06 | 95.77 | 87.57 | 70.03 | 52.60 | 41.43 | 65.62 | |||||||||||||
MIN | 18.69 | 27.14 | 43.61 | 57.43 | 66.07 | 73.73 | 81.00 | 80.48 | 71.50 | 57.94 | 31.80 | 24.90 | 58.16 | |||||||||||||
YRS | 70 | 69 | 68 | 71 | 70 | 67 | 68 | 67 | 68 | 72 | 69 | 67 | 54 |