YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 79.04 | g | 82.94 | 68.13 | 57.97 | 37.30 | 21.71 | 53.61 | g | |||||
1962 | 15.10 | 19.79 | 35.42 | 49.37 | 66.32 | 73.60 | 76.19 | 77.74 | 66.17 | 58.23 | 41.83 | 25.06 | 50.40 | |||||||||||||
1963 | 10.84 | 20.43 | 41.94 | 55.67 | 64.16 | 77.73 | 81.77 | 77.55 | 69.80 | 67.74 | 44.03 | 17.13 | 52.40 | |||||||||||||
1964 | 27.77 | 30.21 | 33.26 | 54.20 | 70.63 | a | 74.13 | 83.52 | 72.71 | 65.70 | 56.30 | a | 39.10 | 18.42 | 52.16 | |||||||||||
1965 | 17.16 | 20.14 | 27.84 | 48.87 | 65.71 | 72.13 | 77.68 | 76.03 | 57.00 | 56.97 | 37.20 | 29.35 | 48.84 | |||||||||||||
1966 | 9.32 | 23.82 | 38.97 | 45.23 | 62.90 | 75.97 | 83.00 | 74.94 | 68.60 | 55.16 | 35.43 | 23.26 | 49.72 | |||||||||||||
1967 | 21.19 | 18.57 | 37.71 | 50.30 | 61.19 | 73.37 | 78.87 | 76.65 | 71.13 | 54.48 | 36.27 | 25.84 | 50.46 | |||||||||||||
1968 | 20.26 | 24.34 | 46.81 | 53.90 | 62.52 | 73.97 | 77.94 | 76.55 | 68.50 | 57.35 | 37.43 | 20.81 | 51.70 | |||||||||||||
1969 | 15.29 | 24.93 | 34.16 | 53.90 | 66.68 | 68.43 | 78.10 | 82.06 | 68.50 | 49.97 | 37.03 | 25.39 | 50.37 | |||||||||||||
1970 | 14.60 | a | 24.79 | 33.74 | 48.63 | 61.29 | 76.23 | 83.16 | 79.94 | 68.77 | 55.42 | 34.50 | 21.03 | 50.17 | ||||||||||||
1971 | 10.81 | 24.39 | 33.84 | 53.03 | 64.52 | 77.83 | 75.23 | 75.87 | 68.93 | 58.58 | 35.90 | 23.39 | 50.19 | |||||||||||||
1972 | 12.58 | 18.69 | 30.97 | 46.17 | 70.65 | 75.43 | 76.19 | 76.68 | 64.77 | 50.97 | 32.80 | 16.81 | 47.72 | |||||||||||||
1973 | 23.13 | 26.96 | 44.06 | 52.17 | 64.42 | 74.80 | 77.74 | 78.52 | 65.63 | 59.39 | 36.80 | 21.55 | 52.10 | |||||||||||||
1974 | 17.48 | 26.25 | 32.32 | 53.80 | 60.87 | 74.80 | 82.61 | 73.58 | 62.77 | 56.77 | 37.77 | 29.32 | 50.70 | |||||||||||||
1975 | 20.03 | 24.75 | 30.94 | 43.40 | 70.55 | 73.33 | 82.29 | 76.29 | 64.13 | 59.58 | 41.73 | 21.90 | 50.74 | |||||||||||||
1976 | 16.77 | 33.41 | 34.55 | 59.87 | 68.19 | 78.03 | 82.39 | 82.84 | 73.23 | 50.55 | 32.27 | 16.39 | 52.37 | |||||||||||||
1977 | 9.37 | a | 27.61 | 43.03 | 60.37 | 75.68 | 76.23 | 81.16 | 71.55 | 64.53 | 55.90 | 36.37 | 18.71 | 51.71 | ||||||||||||
1978 | 14.84 | 21.64 | 38.58 | 52.13 | 69.87 | 74.63 | 77.13 | 76.13 | 69.90 | 56.87 | 36.17 | 20.03 | 50.66 | |||||||||||||
1979 | 9.61 | 16.00 | 32.26 | 46.43 | 60.45 | 74.20 | 79.32 | 74.68 | 69.23 | 52.00 | 35.67 | 29.61 | 48.29 | |||||||||||||
1980 | 18.13 | 22.66 | 33.74 | 59.17 | a | 73.32 | 76.60 | 83.29 | 76.39 | 65.00 | 50.29 | 39.13 | 21.74 | 51.62 | ||||||||||||
1981 | 24.84 | 28.86 | 43.94 | 54.53 | 67.06 | 72.73 | 79.23 | 76.65 | 66.47 | 51.65 | 43.53 | 22.94 | 52.70 | |||||||||||||
1982 | 8.81 | 22.25 | 33.16 | 49.23 | 68.48 | 70.57 | 79.97 | 75.83 | a | 66.40 | 55.32 | 34.17 | 28.42 | 49.38 | ||||||||||||
1983 | 23.26 | 29.79 | 36.81 | 50.47 | 64.03 | 74.31 | a | 82.65 | 83.23 | 69.33 | 53.97 | b | 35.34 | a | 11.03 | 51.18 | ||||||||||
1984 | 18.27 | a | 34.28 | 32.68 | 56.10 | 64.97 | 74.63 | 79.93 | a | 82.10 | 64.17 | 56.58 | 38.47 | 23.00 | b | 52.10 | ||||||||||
1985 | 18.45 | b | 23.61 | 42.45 | 60.11 | c | 70.55 | 70.87 | 78.90 | 71.97 | 64.73 | 55.48 | 30.72 | a | 13.63 | a | 50.12 | |||||||||
1986 | 24.33 | a | 24.78 | a | 41.48 | b | 56.90 | a | 70.48 | b | 75.87 | 79.55 | 74.03 | 64.67 | 55.74 | 34.23 | 27.52 | 52.46 | ||||||||
1987 | 26.32 | 37.46 | 45.84 | 66.83 | 70.29 | 81.33 | 83.16 | 78.87 | a | 72.27 | 51.48 | 42.27 | 28.03 | 57.01 | ||||||||||||
1988 | 17.26 | 22.00 | 37.07 | a | 57.83 | 75.70 | a | 83.72 | a | 87.19 | 79.54 | c | 68.65 | g | 50.92 | g | 36.75 | f | 23.00 | c | 53.70 | c | ||||
1989 | 25.69 | b | 15.50 | 29.63 | d | 48.39 | g | 68.39 | h | 72.96 | e | 82.11 | d | 77.00 | b | 68.23 | 57.61 | 31.23 | 14.20 | a | 47.42 | b | ||||
1990 | 29.83 | a | 28.79 | 39.35 | 53.87 | 63.58 | 74.60 | 77.23 | a | 77.35 | 68.24 | a | 53.74 | 41.27 | 22.63 | a | 52.54 | |||||||||
1991 | 16.55 | 31.57 | 37.77 | 56.80 | 67.52 | 74.80 | 75.58 | 78.94 | 63.83 | 50.81 | 27.93 | 24.19 | 50.52 | |||||||||||||
1992 | 24.19 | 28.55 | 37.45 | 47.57 | 69.77 | 70.67 | 70.52 | 71.16 | 66.23 | 53.65 | 31.50 | 23.00 | a | 49.52 | ||||||||||||
1993 | 20.52 | 23.63 | a | 36.71 | 50.77 | 63.19 | 68.21 | a | 73.55 | b | 75.16 | 59.77 | 52.35 | 31.93 | 22.55 | 48.19 | ||||||||||
1994 | 7.23 | 17.79 | 39.26 | 52.47 | 68.26 | 74.80 | 74.83 | a | 73.17 | a | 68.60 | 56.00 | 40.87 | 28.55 | 50.15 | |||||||||||
1995 | 19.94 | 22.22 | a | 37.61 | 44.55 | a | 64.32 | 77.97 | 77.17 | b | 77.50 | a | 65.31 | a | 51.67 | a | 27.10 | 18.63 | a | 48.67 | ||||||
1996 | 12.74 | 21.59 | 29.29 | 46.03 | a | 62.13 | a | 73.77 | 75.55 | b | 78.61 | 65.48 | a | 55.29 | 28.47 | 16.39 | 47.11 | |||||||||
1997 | 15.47 | a | 25.82 | 34.06 | 49.77 | 59.97 | a | 77.03 | 76.03 | 72.03 | 68.33 | 55.39 | 31.40 | 29.29 | 49.55 | |||||||||||
1998 | 22.29 | 35.57 | 37.00 | 57.69 | a | 72.87 | 70.03 | 77.74 | 79.84 | 73.20 | 56.97 | 39.33 | 29.26 | 54.32 | ||||||||||||
1999 | 18.29 | 32.93 | 41.29 | 55.47 | 67.06 | 74.37 | 80.84 | 74.77 | 66.07 | 53.97 | 46.10 | 29.77 | 53.41 | |||||||||||||
2000 | 22.16 | 32.59 | 46.65 | 53.20 | 68.61 | 69.53 | 77.71 | 76.23 | 67.23 | 59.26 | 34.80 | 11.80 | a | 51.65 | ||||||||||||
2001 | 26.55 | 18.75 | 36.13 | 52.80 | 66.81 | 73.97 | 79.45 | 79.71 | 67.03 | 54.06 | 48.90 | 30.10 | 52.85 | |||||||||||||
2002 | 28.37 | a | 33.68 | 30.48 | 50.67 | 61.90 | 76.73 | 81.16 | 74.81 | 69.40 | 44.48 | 34.40 | 28.42 | 51.21 | ||||||||||||
2003 | 18.74 | 21.61 | 36.41 | b | ----- | z | ----- | z | 75.90 | i | 78.93 | a | 80.97 | 68.93 | 56.77 | a | 34.60 | 28.77 | a | 47.30 | c | |||||
2004 | 15.06 | 28.66 | 39.19 | 55.33 | 61.26 | 70.86 | b | 77.64 | f | 70.79 | b | 72.67 | 54.93 | a | 41.97 | 24.33 | a | 48.64 | a | |||||||
2005 | 17.47 | a | 30.00 | 37.52 | 58.90 | a | 60.76 | b | 76.00 | 80.83 | a | 78.13 | a | 73.13 | ----- | z | ----- | z | ----- | z | 56.97 | c | ||||
2006 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 40.30 | c | 32.50 | c | 36.40 | j |
2007 | 22.48 | d | 17.95 | f | 41.16 | f | 54.21 | f | 69.87 | h | 77.81 | c | 80.83 | g | 75.83 | h | 71.74 | g | 57.11 | d | 38.00 | h | 20.42 | e | 44.46 | h |
2008 | 19.96 | g | 20.76 | h | 33.67 | g | 49.64 | h | 62.13 | h | 73.46 | f | 77.35 | h | 77.65 | e | 67.18 | h | 55.13 | h | 37.42 | f | 16.44 | f | 77.65 | k |
2009 | 14.72 | f | 26.95 | g | 37.05 | i | 52.68 | e | 66.62 | j | 72.08 | d | 72.58 | e | 73.42 | g | 72.70 | g | 45.46 | g | 46.29 | b | 19.14 | b | 52.55 | g |
2010 | 20.58 | e | 28.93 | a | 49.92 | f | 62.21 | f | 69.00 | f | 72.42 | d | ----- | z | ----- | z | ----- | z | 51.29 | n | 38.90 | 18.90 | 35.95 | g | ||
2011 | 12.94 | 23.36 | 33.00 | 47.93 | a | 61.30 | a | 68.13 | 79.29 | 75.84 | 66.62 | a | 58.42 | 40.90 | a | 27.67 | a | 49.62 | ||||||||
2012 | 24.57 | a | 30.86 | 49.19 | 52.53 | 65.26 | 73.70 | 80.92 | s | ----- | z | 68.07 | b | 51.35 | 38.50 | 24.16 | 47.82 | b | ||||||||
2013 | 19.42 | 22.64 | 32.67 | a | 41.13 | 60.58 | 69.83 | 75.58 | 77.42 | 69.03 | 51.52 | 34.53 | 11.97 | 47.19 | ||||||||||||
2014 | 10.39 | 13.79 | 27.68 | 44.13 | 62.19 | 71.03 | 73.94 | 72.77 | 65.80 | 53.68 | 27.77 | 25.35 | 45.71 | |||||||||||||
2015 | 19.81 | 13.89 | 39.84 | 53.27 | 62.58 | 72.48 | a | 77.13 | 73.90 | 71.30 | 55.65 | 44.70 | 29.10 | 51.14 | ||||||||||||
2016 | 18.68 | 26.48 | 40.77 | 48.73 | 65.52 | 70.23 | 75.10 | 75.87 | a | 66.67 | 55.61 | 48.07 | 21.45 | 51.10 | ||||||||||||
2017 | 23.17 | b | 29.67 | a | 35.39 | 52.87 | 60.87 | 72.13 | 75.97 | a | 69.59 | i | 68.79 | a | 55.74 | 32.20 | 18.32 | 47.74 | a | |||||||
2018 | 17.77 | a | 19.00 | 36.40 | a | 41.87 | 71.71 | 71.87 | 77.06 | 74.74 | 65.20 | 46.16 | 28.13 | 26.81 | 48.06 | |||||||||||
2019 | 14.87 | 16.57 | 31.47 | a | 48.17 | 58.70 | a | 71.80 | 78.39 | 72.87 | a | 64.87 | 49.29 | 29.97 | 23.71 | 46.72 | ||||||||||
2020 | 20.87 | 24.48 | 35.37 | a | 47.93 | 61.74 | 74.30 | 80.10 | 76.06 | 65.03 | 44.77 | 40.63 | 25.23 | 49.71 | ||||||||||||
2021 | 23.26 | 15.25 | 43.06 | 49.00 | 63.90 | 76.33 | 78.77 | 78.10 | 70.77 | 59.63 | a | 38.63 | 25.10 | 51.82 | ||||||||||||
2022 | 12.77 | 16.11 | 31.32 | 39.47 | 61.81 | 73.03 | 75.90 | 74.35 | 68.20 | 55.06 | 36.34 | a | 18.77 | 46.93 | ||||||||||||
2023 | 23.19 | 24.43 | 32.32 | 45.43 | 68.52 | 77.17 | 77.17 | a | 76.19 | 71.90 | 54.26 | 39.27 | 35.10 | a | 52.08 | |||||||||||
2024 | 21.07 | a | 36.72 | 39.74 | 52.20 | e | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 37.43 | h | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 18.55 | 24.81 | 36.75 | 51.61 | 65.71 | 74.00 | 78.65 | 76.56 | 67.41 | 54.67 | 36.96 | 23.12 | 50.54 | |||||||||||||
S.D. | 5.38 | 5.93 | 4.96 | 5.35 | 4.25 | 3.04 | 3.19 | 3.01 | 3.15 | 3.86 | 5.14 | 5.31 | 2.11 | |||||||||||||
SKEW | -0.12 | 0.13 | 0.40 | 0.10 | 0.49 | 0.43 | 0.07 | 0.29 | -0.47 | -0.11 | 0.15 | -0.26 | 0.11 | |||||||||||||
MAX | 29.83 | 37.46 | 49.19 | 66.83 | 75.70 | 83.72 | 87.19 | 83.23 | 73.23 | 67.74 | 48.90 | 35.10 | 57.01 | |||||||||||||
MIN | 7.23 | 13.79 | 27.68 | 39.47 | 58.70 | 68.13 | 70.52 | 70.79 | 57.00 | 44.48 | 27.10 | 11.03 | 45.71 | |||||||||||||
YRS | 60 | 59 | 58 | 57 | 55 | 59 | 56 | 57 | 57 | 57 | 59 | 61 | 50 |